As we all know, reaction, filtration, and drying are three very important unit operations in the chemical, pharmaceutical, and food industries. Generally, there are three unit equipments: reactor, filter, and dryer. These three units of equipment have their own supporting devices. Due to the large area and high cost, the handling or transportation of materials between units is troublesome, not only labor-intensive, but also easy to cause loss and waste of materials. Inflammable, explosive, toxic or highly toxic materials or biological products, drugs, food, etc. that are not allowed to be polluted require airtight operation. At this time, it is more difficult to transport materials between the three devices of reaction, filtration, and drying. Sometimes This often causes the whole set of equipment to be unable to fully operate normally or the labor intensity is high, the production cycle is long, the energy consumption is large, and the efficiency is low, which affects the product quality.
It is based on the above reasons that Wuxi ZhangHua Machinery Co., Ltd. has carried out a lot of design and development work, and finally successfully developed the conical three-in-one filter dryer-multifunctional cylinder-cone three-in-one filter washing and drying machine, the invention patent number: ZL201721560677. 6. Achieved a major breakthrough in chemical equipment technology.
The invention of this machine has had a major impact on the field of chemical equipment technology in China and the world.
Conical three-in-one filter dryer-Multifunctional cylinder cone three-in-one filter washing and drying machine working principle
The machine is of barrel-cone structure, and there are heating jackets on the cylinder body and the lower cone, which can heat or cool the materials. The multi-function machine is equipped with a hollow shaft and a variable-angle variable-lead hollow spiral stirring device. Stirring, stirring and lifting the material, pushing out the material when discharging. A conical filtering device with a relatively complex structure is installed in the lower cone, and a specially designed non-dead angle quick-opening discharge device or a non-dead angle pneumatic discharge ball valve is installed at the bottom of the equipment.
In the reaction stage, the reaction materials are added from the top, and the unique stirring structure can make the materials be stirred evenly in the machine, and the materials are heated or cooled simultaneously through the cylinder jacket, cone jacket, hollow shaft, and hollow spiral blade. Make the material fully react in the machine. In the filtration stage, the machine can filter and dry the material in the machine by pressurizing or vacuuming, and add washing liquid, so that the material can be automatically repulped and washed several times in the machine, and then pressed dry after meeting the washing requirements. In the drying stage, the cylinder jacket, cone jacket, hollow shaft, and hollow ribbon heat the material at the same time and vacuumize the top, vacuum-tight and low-temperature drying of the material, and automatically seal and discharge the material after drying.
Conical three-in-one filter dryer-Multi-functional cylinder-cone three-in-one filter washing and drying machine Process flow
1. Stirring reaction
Add the material (solid-liquid, liquid-liquid or gas-liquid) that needs to be reacted from the feeding port on the top of the equipment, start the motor and reducer, and make the hollow shaft and the hollow ribbon rotate clockwise (looking down from the top). The unique stirring structure can make the materials fully stirred and fully reacted in the machine. If the materials are to be heated or cooled during the reaction, heat medium or refrigerant can be introduced into the cylinder and the cone jacket, as well as the hollow shaft and the hollow spiral belt. The heating or cooling medium can be continuously circulated to complete the heating or cooling of the material to meet the process conditions required for the reaction.
2. Pressure filtration or vacuum filtration
After the reaction is over, open the outlet of the lower filtrate, pass compressed air or nitrogen gas into the equipment, and filter the reacted solid-liquid mixture under pressure until the materials in the machine are dried. Vacuum can also be drawn at the outlet of the filtrate to vacuum filter the material until the filtrate is drained. When filtering, the hollow shaft and the hollow screw belt can be rotated clockwise (viewed from the top) to lift the material, and the hollow screw belt can limit the thickness of the filter cake layer when rotating, so that the material is in a thin filter cake Filter under layer conditions to increase the filtration rate.
For materials that are easy to filter, it is not necessary to stir when filtering, and the materials are directly filtered to dryness.
3. Can be washed and filtered many times
After some materials are filtered, they need to be washed several times. The reaction, filtration and drying multifunctional machine is the most ideal equipment for repeated washing of materials.
After the material is pressed dry in the machine, the washing liquid can be added to the top washing liquid inlet, and then the filter cake is evenly repulped through the stirring of the hollow shaft and the hollow ribbon, and the material is pressed dry after the repulping is evenly stirred. If one wash is not enough, multiple washes can be carried out. At this time, the above steps can be repeated many times. The operation is extremely convenient and the labor intensity is extremely low.
Washing materials in the above method is called batch washing method.
Since the material is pressed dry and then washed with washing liquid, although the valves are opened and closed a little more times during operation, less washing liquid is used. The machine can also continuously wash the materials, that is, continuously press the washing liquid with a pump or other methods, and use the pressure of the washing liquid to filter, while the hollow shaft and the hollow ribbon are continuously stirred, and the filtrate is continuously discharged from the filtrate outlet until Until the washing requirements are met, the filter cake is pressed dry after dyeing. This continuous washing method generally uses more washing liquid than intermittent washing, but it is more convenient to operate.
4. Vacuum drying and discharging
The filter cake that is filtered or washed, filtered and dried remains in the machine. At this time, the heat medium is passed into the cylinder jacket, cone jacket, hollow shaft, and hollow screw belt to heat the material. At the same time, the hollow shaft and hollow screw The belt still rotates in a clockwise direction (looking down from the top) to lift the material up and stir it fully, while vacuuming is carried out on the top of the equipment to make the material dry in a vacuum-tight manner inside the machine. Since the hollow shaft and the hollow ribbon are heated from the inside in addition to the jacket heating, and the drying is carried out under vacuum conditions, the drying efficiency is very high.
After drying, open the quick-open discharge port at the lower part of the equipment, and make the hollow shaft and hollow ribbon rotate counterclockwise (looking down from the top), and the dried materials in the machine will be automatically pushed to the discharge port.
So far, the reaction, filtration, washing and drying processes of a batch of materials are completed.
The cone-shaped three-in-one filter dryer developed and produced by ZhangHua Machinery - multifunctional cylinder-cone three-in-one filter washing and drying machine Product advantages:
1. Closed system: The three-in-one filter, washing and drying system is a fully closed system. Production and operation in the closed system can avoid air pollution from toxic substances, and at the same time reduce the occurrence of poisoning accidents by operators.
2. Recycling: materials and solvents are almost completely recovered, avoiding waste caused by material omission and solvent volatilization, which has great economic benefits.
3. Multifunctional integrated operation: filtering, washing and drying are completed in the same equipment. The vessel walls are equipped with heating jackets to allow drying.
4. Continuous operation: Filtration and drying are carried out in a continuous system, no need to deal with wet filter cake.
The dried products can be mechanically transferred to the weighing and packaging sections.
5. Saving manpower: a non-technical person who has undergone simple training can complete the operation. Opening, closing, automatic feeding and automatic discharging do not require technical personnel to monitor.
6. Thorough cleaning: The filter, washing and drying three-in-one has the functions of automatic spraying and stirring, and the filter cake can be fully cleaned, thereby reducing the amount of sewage and reducing the cost of wastewater treatment.
7. Clean production: The multifunctional filter drying system is equipped with a dust collector to collect the dust produced after drying, which can meet the requirements of clean production.
Conical three-in-one filter dryer-multi-functional cylinder cone three-in-one filter washing and drying machine
Conical three-in-one filter dryer-Multi-functional cylinder cone three-in-one filter washing and drying machine Industry application