Working principle of vertical closed-circuit dryer

Nitrogen filling and oxygen removal process Close the corresponding pipeline control valve, the system is in a completely closed state, open the air exhaust pump, and pump out the air in the system, so that the system reaches a micro-negative pressure state, when the system pressure gauge shows a certain value, close the corresponding emptying valve, and at the same time Turn off the exhaust air pump. At this time, the nitrogen filling control valve is opened, and nitrogen is filled into the system. When the online oxygen detection device detects that the residual oxygen in the system is less than the required value, the system is in a slightly positive pressure state. At this time, the nitrogen filling control valve is closed and the next step is entered. process. Drying process Turn on the circulating fan to make the material in a good boiling state; turn on the radiator to heat the temperature in the system to the required temperature, and the heat will take away the moisture and organic solvent in the material through nitrogen transfer, and take away a small amount of fine powder; in the system, the fine powder is passed through the dust collector. (filtered to 2~μm) and collected, the hot and humid gas condenses the solvent and organic solvent into a liquid state by the condenser and is collected by the liquid storage tank; the dry nitrogen after condensation and dehumidification is circulated in the system through the action of the fan. System nitrogen protection Nitrogen protection is mainly controlled by an online oxygen detector. When the oxygen content exceeds the required value, the nitrogen filling device is

Drying equipment selection

According to different material characteristics, drying each material requires different types of Drying Equipment. Griffin Drying summarizes the dryers used for many materials based on years of design and manufacturing experience, for the reference of customers and brother companies. In order to facilitate the selection of equipment, the details are as follows: Centrifugal Spray Dryer: alumina, bentonite, beryllium oxide, calcium carbide, silicon carbide, cement, electric porcelain, enamel, ferrite, floor tile material, glass sand, grinding wheel material, insulating material, iron oxide, kaolin, sand, silicon oxide , spark plug material, soapstone, titanate, tungsten carbide, uranium oxide, wall tile material, zinc oxide, zirconium silicide, adipic acid, aluminum formate, aluminum stearate, aminophenol disulfonic acid, aspirin, bismuth Compound, calcium acetate, calcium butyrate, calcium gluconate, calcium lactate, calcium propionate, calcium saccharate, calcium stearate, cellulose acetate, CMC, methylmorphine phosphate, edetate, complex magnesium salt, Glutamic acid, glycerides, glyoxal, lactose, lysine, malic acid, mercaptothiazole suspension, metal stearate, oxalic acid, p-aminosalicylic acid, potassium phthalate, potassium sorbate, Rubber catalyst, salicylic acid, sodium acetate, sodium benzoate, sodium dimethyldithiocarbamate, sodium ethylxanthate, sodium carbonate, sodium sorbite, stearic acid, wax, stearic acid Zinc, acrylonitrile butadiene resin, acrylonitrile butadiene styrene resin, melamine formaldehyde resin, polyoxymethylene, phenol formaldehyde resin, polyacrylate, polyacrylonitrile, polycarbonate, polyethylene, polyaldehyde, polypropylene, Polystyrene, polyvinyl (acetal) aldehyde, polyvinyl alcohol, polyvinyl alcohol butyrate, polyvinyl butyral, polyvinyl chloride emulsion, polyvinyl chloride suspension col

Daily maintenance rules for linear vibrating fluidized bed dryers

Vibrating fluidized bed dryers can be said to be widely used. After use, maintenance and maintenance are required, which is beneficial to the longer service life of the linear vibration fluidized bed Dryer and reduces the occurrence of failures. How to maintain the bed dryer on a daily basis? Here we summarize a few for your reference. 1. Regularly clean the main body of the equipment, the auxiliary pipelines and the use site to ensure that they are clean and free of dust, oil, grease and other debris. When cleaning, the power supply of the vibration motor should be cut off. Dry to prevent the bed from rusting. 2. Check the main body of the equipment and the auxiliary pipelines to ensure that the parts are complete and reliable, such as: whether the parts of the vibration motor, the equipment pipes, and the bolts of each connection are complete, check the working condition of the vibration isolation rubber spring, when the vibration isolation spring appears aging turtle When it is cracked or the installation height is lower than 105MM, it should be replaced. The free height error of each group of vibration isolation springs is not more than 3MM, etc. 3. Always check the connecting parts of the equipment and auxiliary keywords to ensure that they are tightened and ensure that the connecting bolts are not loose. 4. Always check the sealing surfaces to ensure that they are tight and leak-free, such as: sealing surfaces of the bed body, sealing surfaces of various pipe fittings, sealing surfaces of bearing glands and other sealing surfaces.

Analysis of common failure causes of linear vibrating fluidized bed dryer

There may be some common small faults during the use of the linear vibrating fluidized bed Dryer. Generally, how do we find the reasons for these small faults? We can find out through the fault analysis corresponding to the common faults. Causes to find practical solutions. Fault 1: The temperature display is different from the set temperature. There are several reasons for this, mainly including insufficient steam pressure, failure of steam sensor, failure of electric heating heating, failure of temperature sensor, and too large damper of exhaust air duct. Fault 2: The fuselage moves laterally. There may be two reasons for this: the eccentric block of the vibration motor is not synchronized, and the air volume at the feed end is too large. Fault 3: The discharge speed is too fast. The cause may be that the feed end component is too large, or the included angle of the eccentric block of the vibration motor is too small. Fault 4: The discharge speed is too slow. The cause may be that the weight of the discharge end is too large, and the included angle of the eccentric block of the vibration motor is too large. Fault 5: There are large particles at the discharge port of the cyclone dust collector. The cause may be that the air intake is too large and the air volume of the induced draft fan is too large. Among these failures of the linear vibrating Fluidized Bed Dryer, the corresponding causes

Introduction of product advantages of linear vibrating fluidized bed dryer

Some product introductions of linear vibrating fluidized bed dryers, I believe in the product list, everyone has a certain understanding, what are the advantages of linear vibrating fluidized bed dryers in the application, how much do you know, here we are Changzhou Jiayi Drying summarizes some of the advantages of linear vibrating fluidized bed dryers, which are shared with you below. The advantages of linear vibrating fluidized bed Dryer: 1. Stable fluidization, no dead bed and blow-through phenomenon, and uniform products can be obtained. . 2. The vibration source is a vibration motor, with stable operation, convenient maintenance, low noise and long equipment life. . 3. Good adjustability, the thickness of the material layer, the residence time of the material in the machine and the change of the amplitude of the machine can be adjusted steplessly within the design range. . 4. Wide adaptability, suitable for materials with different specific gravity, particle size, water content and water content. . 5. It has little damage to the surface of the material, and can be used for drying fragile materials. The material particles are irregular, and it does not affect the working effect. 6. The heating method is direct heating, with high thermal efficiency and good energy saving effect.

Operating Instructions for Linear Vibrating Fluid Bed Dryers

How is the linear vibration fluidized bed Dryer used? In actual use, it is necessary to master the appropriate operating specifications, so as to ensure the correct operation of the linear vibration Fluidized Bed Dryer and make the equipment longer service life, So how to do it. Preparations before starting the linear Vibrating Fluidized Bed Dryer: First check the equipment to ensure that the equipment is in good condition, then start it up, and then adjust the excitation force of the vibration motor to make the machine reach the required amplitude (no adjustment is required under normal circumstances). Operation and use of linear vibrating fluidized bed dryer: The first step; open the steam valve, the instrument pressure reaches the specified value according to the requirements. The second step: start the feeder to feed the material, so that the material is evenly distributed on the fluidized bed plate. The third step; Shi Ke pays attention to the vibration of the fuselage and the temperature inside the fuselage to ensure that it is safe and sound. Step 4: Always pay attention to the connection bolts to ensure that there is no loosening and falling off, and that each sealing surface has no leakage.

How to clean the linear vibrating fluidized bed dryer

Linear vibration fluidized bed Dryer is a kind of dryer that can dry chicken essence, salt, slag, watercress and other functional foods or chemical and pharmaceutical logistics such as xylitol, mannitol, boric acid, etc. The types are different, so the linear vibration Fluidized Bed Dryer needs to be cleaned regularly after a period of use. How to clean the linear vibration fluidized bed dryer? The following is about the linear vibration fluidized bed dryer. some cleaning. Cleaning includes regular and daily cleaning. During regular cleaning, the observation window and the accumulated material discharge port should be opened regularly to remove the materials remaining on the fluidized bed and the materials that fall into the box. If the fluidized bed screen is blocked, it should be dealt with. When washing with water, the equipment should be dried in time to remove moisture after washing, so as to avoid corrosion of the equipment and affect the next material treatment effect. Usually as an oral solid preparation workshop, the coating machine, granulation line, cleaning station, etc. share a process hot water system, which is an independent water circulation system, which connects the hot water to the panel and dries through a vibrating fluidized bed The PLC of the machine controls the hot water solenoid valve or pneumatic valve, and sets the cleaning time. The premise of WIP is to remove the filter bag and other detachable parts, and use the initial washing water, purified water, detergent, etc. as needed. Of course, the actual operation and cleaning, as well as the rules and the degree of cleaning, should be controlled according to the actual use, b

Working Principle Of Vibrating Fluidized Bed Dryer

Vibrating fluidized bed is a kind of granular material Drying Equipment, mainly used in the process of granular feed processing. As a drying equipment, it is necessary for the user to understand the drying principle of the vibrating fluidized bed? The vibrating fluidized bed Dryer is a vibrating motor that generates an excitation force to make the machine vibrate. The material jumps forward under the action of the excitation force in a given direction. At the same time, the hot air input at the bottom of the bed makes the material in a fluidized state, and the material particles and hot air are sufficient. Contact to achieve the desired drying effect. The material enters from the material port, the material on the vibrating tank is in orthogonal contact with the hot air passing through the lower part of the vibrating tank to transfer heat, the wet air is drawn out by the induced air, and the dry material is discharged from the discharge port. Features of vibrating Fluidized Bed Dryer: 1. The vibration source is a vibrating machine, which has balanced operation, convenient maintenance, low noise and long life. 2. The fluidization is uniform, without dead voids and blow-through phenomena, and uniformly dried and cooled products can be obtained. 3. It can be adjusted well and adapt to a wide range. The thickness of the material layer and the moving speed in the machine, as well as the uniform change of the total vibration pair, can be adjusted steplessly.

Failure Analysis and Elimination of Vibrating Fluidized Bed Dryer

1. Fault phenomenon: the temperature display is different from the set temperature Cause analysis: insufficient steam pressure; steam sensor failure; electric heating heating failure; temperature sensor Fault; the damper of the moisture exhaust duct is too large. Remedy: check and repair the steam source; replace the sensor; check and repair the electric heater; replace the sensor; Adjust the damper. 2. Fault phenomenon: the fuselage moves laterally Reason analysis: the eccentric block of the vibration motor is not synchronized Remedy: Adjust the eccentric block 3. Fault phenomenon: the discharge speed is too fast Reason analysis: the air volume at the feed end is too large; the included angle of the eccentric block of the vibration motor is too small Remedy: Adjust the air regulating plate and the eccentric block 4. Fault phenomenon: the discharge speed is too slow

Layout principle of vibrating fluidized bed dryer

The equipment installation and layout of the vibrating fluidized bed Dryer also has some principles, so that it can be fully used. How can the linear vibrating Fluidized Bed Dryer be installed and arranged better? The following are some layout principles about the Vibrating Fluidized Bed Dryer. . 1. The main principle of the layout of the vibrating fluidized bed dryer is to keep the products or parts flowing in a straight line during the processing, and the flow path should be as short as possible, and reverse flow should be avoided as much as possible to shorten the transportation time. 2. Appropriate spacing There should be a certain spacing between the equipment and the equipment, the vibrating fluidized bed and the building, so that the operation is convenient, the production is safe, and the area of the workshop is fully utilized. When arranging the vibrating fluidized bed dryer, it should first determine the arrangement of the vibrating fluidized bed according to the type of equipment, or according to the flow operation; whether it is arranged back to back or horizontally or vertically, and then according to the provisions of various arrangements, Select the minimum clearance size between devices from the relevant information. For the vibrating fluidized bed dryer, the installation arrangement is also an important part. Finally, I would like to remind everyone that the minimum distance between the vibrating fluidized bed dryer equipment and the wall column is also specified, which can be checked from the relevant information.

The working principle of vibrating fluidized bed dryer

Vibrating fluidized bed dryer is more suitable for drying crystals and powders after centrifuges. It is also suitable for granular products such as food additives, organic fertilizer granules, etc. It is also suitable for cooling products, such as PVC Granules, plastic granules such as TPU, and product cooling after drying equipment, such as milk powder, coffee and other products. The principle of vibrating fluidized bed drying: the natural air is taken from the dry air, and the natural air is passed through the air filter by the blower and then heated to the set temperature by the heat source such as the steam heat exchanger or the electric heater (the temperature is determined according to the characteristics of the product) , through the pipeline to the lower bed of the fluidized bed or the bottom of the bed to enter the air to become the drying heat medium of the fluidized bed dryer. The wet product enters the bed of the fluidized bed from the feed port of the fluidized bed through the feeder. The fluidized bed is driven by the vibration motor on both sides or the head vibration motor to make the bed move, and the wet product moves along the fluidized bed. The fluidized bed moves horizontally parabolically in the in and out direction, and the drying hot air penetrates the bed plate from the bottom (the bed plate is a perforated plate) and contacts with our products to form heat convection exchange. During the whole drying process, the wet material is always suspended on the bed plate. After drying The water vapor and fine powder are discharged through the upward pipeline of the induced draft fan, and the dust is collected by the cyclone separator or bag filter at the back end. For a single fluidized bed, we can also design an integrated bed with drying and cooling. The dried product continues to move forward along our fluidized bed. At the front end, we

Four factors affecting the drying effect of boiling dryer and equipment characteristics

The boiling dryer operates under closed negative pressure and is controlled by a PLC control system. The temperature can be automatically adjusted and the working temperature is always maintained between 50 and 120 °C. With the advantages of good material boiling condition, uniform heat absorption, fast drying speed, and good drying quality of materials, the boiling dryer is a new model that has been successfully developed by absorbing and digesting foreign technology and combining with national conditions. The structure is reasonable, the performance is stable, the operation is convenient, and the whole machine has no dead ends and no exposed screws. The boiling dryer is composed of a host, an air handling system, a heating system, and a control system. When working, the material is added to the hopper of the dryer, the program and parameters are set according to the process requirements, and the whole machine starts to work. The air is filtered by the air treatment system, heated by the heating system, and then enters the main machine. The material is fluidized by the hot air, the water evaporates quickly, and the material is quickly dried. After the operation is completed according to the set procedures and parameters, the silo is pushed out and the lifting conveyor is buckled to lift the material to effectively control dust and cross-contamination. The equipment works under closed negative pressure, and the inner surface of the entire equipment is smooth and clean, without dead ends, easy to clean, and in line with "GMP" requirements. The boiling dryer can directly dry liquid materials, and has various functions such as rapid drying of granules and powder materials. The material hopper is conical, which can increase the flow rate of the material and facilitate fluidization. It is not easy for the material to form a dea

What are the safety measures for the pressure spray dryer?

1. Explosion-proof measures of pressure spray Dryer 1. A blasting disc and an explosion venting valve are set on the side wall of the main tower dried by the Pressure Spray Dryer and on the top of the sub-a. 2. Install a safety movable door (also known as an explosion-proof door or an overpressure door). When the internal pressure of the pressure Spray Dryer is too large, the movable door will automatically open. 2. Attention should also be paid to the operation of the pressure spray dryer 1. First turn on the centrifugal fan of the pressure spray dryer, and then turn on the electric heating to check for air leakage. Normally, the cylinder can be preheated. The hot air preheating determines the evaporation capacity of the Drying Equipment, without affecting the quality of the drying material. to increase the suction temperature as much as possible. 2. During preheating, the valves at the bottom of the drying chamber of the pressure spray dryer and the discharge port of the cyclone separator must be closed to prevent cold air from entering the drying chamber and reducing the preheating efficiency.

Advantages in the working process of spin flash dryer

The structure of the spin flash Dryer can divide the working process into four stages: crushing, gas-solid contact, drying, and grading. These four working processes are also not available in other dryers at the same time. Crushing: Since the rotary Flash Dryer is mainly used for drying paste-like materials, the materials are immediately crushed by stirring blades and high-speed airflow after entering the dryer, which maximizes the dispersion of materials and the surface area of wet materials per unit volume. Gas-solid mixing: The Rotary Flash Dryer uses air as the heat carrier, and whether the gas-solid mixing can be effectively achieved is the main factor affecting the drying rate. The stirring blade breaks the material and produces a dispersion effect. At the same time, the hot air entering the dryer is also in a highly flowing state, and quickly achieves gas-solid mixing. Drying stage: After the material is crushed, it is blown up by the high-speed rotating hot air from the bottom, forming a relatively stable fluidized bed in the drying chamber. evaporated at this stage. Classification stage: The classifier is an annular baffle installed at the lower part of the outlet of the dryer. The material rises with the air flow. Due to the centrifugal force, the large and wet materials are affected by the centrifugal force and the rotation radius increases. When the rotation radius is larger than the radius of the classification ring, the material is blocked in the dryer, and can be discharged from the dryer through the classifier until the requirements are met.

Spin flash Dryer drying process

The heat exchange of the dryer is mainly based on the air flow and the particles, and the two heat exchanges between the cylinder wall and the particles. The drying process is essentially the diffusion process of water, which depends on the process that the water in the material becomes steam and diffuses outward. The rotary Flash Dryer adopts high-speed hot air flow into the cylinder in the tangential direction. Due to the spiral motion of the airflow in the cylinder, on the one hand, the temperature of the medium around the particles is reduced, and the flow rate and temperature of the medium are increased at the same time, which greatly improves the speed of external diffusion. On the other hand, the high-temperature airflow impacts the particles or wet materials in the lower part of the cylinder at high speed, and at the same time, the stirring effect of the stirring blades in the cylinder makes the particles broken, the particle size is reduced, and the diffusion resistance of water is reduced. Most of these particles are repeatedly broken in the cycle of high temperature and high stirring intensity at the lower part of the cylinder, which eliminates the agglomeration of materials, and also promotes the diffusion of water in the powerful measures, which strengthens the evaporation of water. The flow mode of particles and hot air flow: there are both convection and co-current in the lower part of the cylinder, and for coarse particles, it is convection and co-current repeated heat exchange. For fine-grained materials, it is paralleled with the hot air flow, so the drying process can be completed in an instant. For the drying of particles, hot air drying with high temperature and low humidity is actually used. These particles are main

Spin flash dryer operating procedures

1. Check before starting the machine, check whether the connecting parts of each part are connected tightly, check whether the receiving device is well connected, and check whether the power supply is well connected. 2. Start-up preparation: Whether the material to be dried is in place, place it at the inlet of the flash dryer feeding device, connect the power supply, whether it is powered on to make it normal, and observe whether the voltage, current, and compressed air values are correct. 3. Start the equipment: turn on the front blower of the flash dryer, and then turn on the rear induced draft fan. At this time, the circulation system is turned on, and observe whether there are abnormal noises and other problems. Everything is normal. Turn on the heating device, and the temperature setting can be stored by PLC. The product parameters can be set with one key or manually according to the product characteristics. After the setting is completed, wait for the temperature to reach the set value of the flash dryer, turn on the stirring device of the flash dryer, and after the operation is stable, Turn on the screw feeding device, start feeding slowly, and observe the outlet air temperature. The outlet air temperature is automatically adjusted according to the feeding speed of the flash dryer. On the premise of ensuring the outlet air temperature, we can accurately control the outlet air temperature. The moisture of the flash dryer product, after feeding, observe whether it is smooth, open the air hammer of the flash dryer, and start continuous production. 4. Equipment shutdown: After the continuous production is completed, first stop the screw feeder of the flash dryer, then stop the heating device, wait until the internal temperature of our flash dryer cools down to below 50 ℃

The working principle of spin flash dryer

Rotary flash drying is to use hot air as the drying medium in the drying process and realize the medium circulation in the whole system through the fan, to achieve the heat exchange between the hot air and the wet material in the drying process, to vaporize the moisture in the product, and to achieve the inside of the product. Moisture pull, i.e. drying of the product. The dry hot air is taken from the natural air in the environment, and after passing through the front air filter, it is blown in by the blower (steam heat exchanger, electric heater, natural gas and other hot air furnaces are heated, and the heated hot air passes through the flash dryer. The special double-air channel hot air distributor can achieve hot air with uniform hot air, constant flow rate and stable flow direction after distribution. The hot air and screw feeder are added to the flash dryer to strengthen the convection of the wet product after stirring, and start to realize heat exchange, gas phase separation, etc. A series of physical changes in heat exchange, the surface moisture of the wet product is taken away, and the final moisture content of the product is reached. The bottom structure of the flash drying host is equipped with a strong stirring system, which can quickly and completely disperse and crush the added wet materials, increase the contact area with the hot air, improve the drying efficiency, and achieve the purpose of evaporating water in an instant. , and the final products obtained after crushing are all powder particles with uniform uniformity, and the particle size can be adjusted, eliminating the process of later crushing and screening. The top of the flash drying is equipped with a grading ring device. If the product fails to meet the qualified requirements, it will sink along the inner wall of the flash drying and continue to dry. A

Comparison of pressure spray dryer and centrifugal spray dryer

Classification introduction Spray dryer is a one-step direct drying method from raw material solution to finished powder. - Centrifugal Centrifugal spray is a kind of spray drying method after liquid is atomized by high-speed centrifugal atomizer. -pressure Pressure spray is a spray drying method in which liquid is atomized through a spray gun by a high-pressure pump - closed loop Closed-circuit spray dryer is a spray drying method that uses inert gas as a circulating medium Selection The selection of spray drying is to select the most suitable spray drying method according to the characteristics of raw materials, moisture content, raw material state, and finished product form. -working principle The working principle of centrifugal spray drying: After the raw material is atomized by the centrifugal atomizer, a specific surface area of the raw material is increased, and the heat exchange with the hot air of our spray dryer is instantaneous, and the moisture of the raw material is evaporated instantly, and our powder product is obtained. . The working principle of pressure spray drying: The raw materials are transported to our pressure spray gun through a high-pressure diaphragm pump. Under the action of high pressure, the raw materials are atomized through

Influence of temperature on drying of high-speed centrifugal spray dryer

When the high-speed Centrifugal Spray Dryer is drying, the drying effect will also be affected by some operating factors, such as temperature control. When drying different materials, the use of high-speed centrifugal spray dryers is also different, then the specific What kind of influence is there? In the operation of a high-speed centrifugal spray Dryer, it is very important to determine the temperature of the hot air entering the tower (hot air temperature) and the outlet temperature (exhaust air temperature). The exhaust air temperature is related to the moisture content of the product and should be determined according to the allowable moisture content of the product. The higher the hot air temperature, the higher the thermal efficiency and the better the economy. However, excessive hot air temperature will cause deterioration of product quality, so the hot air temperature must be appropriately increased on the premise of ensuring product quality. The hot air temperature of the high-speed centrifugal Spray Dryer will have a significant impact on the bulk density of the product. High-temperature hot air tends to produce low bulk density, which is due to the rapid drying effect of hot air, which hardens the surface of the particles and expands the residual moisture, which promotes the formation of balloon-like hollow particles. If high bulk density (low specific volume) is required, or solid particles are required, the design should not use hot air at high temperatures to contact the newly formed droplets. In the drying of chemicals, the hot air temperature is as high as 538 °C, and the product particles are large. It was found that the residual steam had sufficient pressure to blow the outer surface into a cavity. In food spray dryi

What are the advantages of a double cone vacuum dryer?

Double Cone Vacuum Dryer has large processing capacity, low fuel consumption and low drying cost. The Double Cone Dryer has the characteristics of high temperature resistance, and can use high temperature hot air to quickly dry materials. Generally, the high-end material is fed, and the high-temperature hot flue gas enters the cylinder in parallel with the material. When the cylinder rotates, the material flows downward due to gravity. The inner wall of the drum is provided with a copy board, which picks up and throws the material, so that the contact surface between the material and the air flow expands, thereby increasing the drying speed and promoting the advancement of the material. Collect dry product from the bottom. Vacuum Dryer Double Cone Vacuum Dryer drying series: 1. Electromagnetic switch, stainless steel cylinder, internal polishing; 2. PID control, LED status display, temperature control accuracy can reach 1. 3. Sewage discharge design, uniform heat dissipation, more stable temperature and higher drying efficiency; 4. Double-layer overheat protection device to reduce accidents caused by human or mechanical failure; 5. The stainless steel dryer is made of stainless steel in contact with the raw materials, without dead ends, and the materials are thoroughly cleaned.

Analysis of Technical Characteristics of Disc Continuous Dryer Adapting to Materials

The Disc Dryer is suitable for materials: drying pyrolysis combustion cooling reaction sublimation (1) Organic chemical products (2) Inorganic chemical products (3) Medicine and food (4) Feed and fertilizer Analysis of technical characteristics of disc dryer: (1) Drying tray 1. Design pressure: generally 0.4MPa, up to 1.6MPa. 2. Working pressure: generally ≤0.4MPa, up to 1.6MPa. 3. Heating medium: steam, hot water, heat transfer oil, hot water heating when the temperature of the drying plate is 100℃, ≤0.4MPa saturated steam or superheated steam heating when the temperature is 100℃~150℃, and heat conduction when the temperature is 150℃~320℃ Oil heating, when > 320 ℃, it can be heated by electricity, heat conduction oil, molten salt, etc. (2) Material conveying system 1. Spindle speed: 1 to 10 rpm, electromagnetic or variable frequency stepless speed regulation. 2. Rake arms: There are 2 to 8 rake arms fixed on the main shaft on each layer of drying tray. 3. Rake blade: articulated on the rake arm, it can float up and down with the disc surface to keep in contact, and there are various forms. 4. Rolling: For materials that are easy to agglomerate and need to be pulverized, adding rolling at an appr

How to correctly select drying equipment for food companies

There are many kinds of drying equipment on the market now, and many customers do not know how to choose which equipment to dry their materials. Below we will make a brief introduction to the selection of food drying equipment. Common drying equipment can be divided into normal pressure and reduced pressure according to the operating pressure (decompression dryer is also called vacuum dryer); according to the operation method, it can be divided into intermittent type and continuous type; according to the drying medium, it can be divided into air and flue gas. Or other drying medium; according to the way of movement (material movement and drying medium flow), it can be divided into co-current, counter-current and cross-current. Which food drying equipment should be selected for different material operations? When we consult the drying equipment manufacturer, we should tell the other party: what material do I want to dry, and what state (liquid, solid) do I want to dry? What is the initial moisture content of the material? How much water is required after drying? What is the maximum temperature that the material can withstand when drying? Are there organic solvents? Does it contain corrosive issues? and many more. The drying equipment manufacturer will recommend a drying equipment suitable for your material according to your specific requirements. The following are some typical applications of our drying equipment for food products. If you have any questions, please contact us for consultation and negotiation. Drying equipment Material representative example Belt dryer Dehydrated vegetables, pellet feed, mo

Safety Problems of Double Cone Vacuum Dryer

Double Cone Rotary Vacuum Dryer has its own unique advantages, but there are many safety issues that we need to pay attention to in the process of use. 1. If the items in the double cone rotary vacuum Dryer are wet, add a filter between the empty box and the vacuum pump to prevent the wet gas from entering the vacuum pump and cause the vacuum pump to malfunction. 2. The vacuum double-cone rotary Vacuum Dryer should be used in an environment with relative humidity ≤85%RH, non-corrosive vacuum drying gas, and no strong vibration source and strong electromagnetic field around. 3. After repeated use, there will be a phenomenon that the vacuum cannot be drawn. At this time, the door sealing strip should be replaced or the distance of the door buckle on the box should be adjusted to solve the problem. When the temperature of the empty double cone rotary vacuum dryer is higher than 200 ℃, there will be slow air leakage (except 6050, 6050B, 6051, 6053). At this time, open the back cover of the double cone rotary vacuum dryer, loosen the heater base with an Allen wrench, replace the sealing ring or tighten the heater base to solve the problem. 4. The vacuum pump can't work for a long time. When it is necessary to realize the double cone rotary vacuum dryer project, the vacuum valve should be closed first, and then the vacuum pump should be closed. When the vacuum is less than the requirements of the double cone rotary vacuum dryer project, the vacuum valve should be opened again. , The vacuum pump power supply can continue to pump the air into the vacuum state