Drum type filtering, washing and drying machine (drum type three-in-one)

Abstract

The invention belongs to solid-liquid separation drying equipment, and relates to a drum-type filtering, washing and drying machine which is named as a drum-type three-in-one machine (see figure 1) for short and comprises a filter screen detachably mounted in a filter screen supporting drum of a drum body, and the drum body is formed by welding the filter screen supporting drum, a liquid collecting drum, a left side plate of the drum body and a right side plate of the drum body. The plunger valve and the washing liquid check valve are installed on the filter cartridge left end cover, the filter pressing gas check valve and the feeding check valve are installed on the filter cartridge right end cover, the screw is installed in the filter cartridge through the filter cartridge left end cover inner bearing and the filter cartridge right end cover inner bearing, and the shaft end of the screw is connected with the speed reducer through the coupler and driven by the motor. The liquid discharge pipe is welded and communicated with the filtrate collecting barrel of the barrel body, the plunger valve serves as a discharging outlet and is controlled by the air cylinder actuator to be opened and closed, the shaft seal is sealed through a pneumatic ring, the parts form a barrel type three-in-one structure which is installed on a rack, and the barrel type three-in-one structure is suitable for solid-liquid separation and drying in the pharmaceutical and chemical industry.

Description

Technical Field

[0001] The invention belongs to the technical field of solid-liquid separation equipment in the pharmaceutical and chemical industries, and particularly relates to a cylindrical filtering, washing and drying machine, which is a solid-liquid separation equipment which uses a screw installed in a filter cartridge to perform unloading. Background Art

[0002] In the pharmaceutical and chemical manufacturing fields, solid-liquid separation and drying equipment is widely used, such as a vertical filter-washer-dryer referred to as a vertical three-in-one. The following cylindrical filter-washer-dryer of the present invention is referred to as a cylindrical three-in-one.

[0003] At present, the vertical three-in-one is widely used in the domestic pharmaceutical and chemical industries. Its role and function are the same as those of the cylindrical three-in-one of this device. The two devices are very different in structure. Since the vertical three-in-one equipment can complete the operations of filtration (solid-liquid separation), washing (washing of solid materials), and drying (drying of solid materials) on one device, its disadvantages are that all three functions are weakened, inefficient, complex equipment structure, and high cost. Summary of the invention

[0004] The purpose of the present invention is to provide a new structure, fully enclosed, fully automatic filtering, washing and drying cylindrical three-in-one, which can also be used as a filter press. The production capacity of the equipment can be combined with multiple machines according to the needs of users. The filtering working pressure can reach 12bar, which is higher than the maximum working pressure of the vertical three-in-one by 4bar. Its technical characteristics include: high-pressure filtration, high-pressure washing, high-pressure dry hot gas penetrating the material layer for drying, screw unloading, PLC program control, high efficiency, fully enclosed operation, pneumatic ring sealing, and the sanitary level meets the requirements of pharmaceutical GMP workshops.

[0005] The object of the present invention is achieved in this way: a cartridge filter washing and drying machine (cartridge type three-in-one), (see Figure 1 ), including a detachable filter installed in the cylinder filter support cylinder, the cylinder is welded by the filter support cylinder, the liquid collecting cylinder and the left and right plates of the cylinder, the plunger valve, the washing check valve, are installed on the left end cover of the filter cylinder, the filter press check valve, the feed check valve are installed on the right end cover of the filter cylinder, the screw passes through the left end bearing of the filter cylinder (see Figure 2 ) and the right end bearing of the filter cartridge (see Figure 3 ) is installed in the filter cartridge, and both ends of the screw shaft are sealed with pneumatic rings (Be Figure 2 , Figure 3), when the equipment is in the filtering, washing and drying working stages, the screw is in a stationary state, and the compressed gas is passed into the pressure equalizing groove on the pneumatic ring through the gas channel to push the pneumatic ring to be in close contact with the sealing surface of the screw shaft, which has a good sealing effect. There are three sealing rings on the pneumatic ring. When the reducer is started to drive the screw to rotate, the pneumatic ring air inlet channel is closed first, and the spring separates the pneumatic ring from the screw shaft sealing surface through the lever screw. The compressed gas is opened to enter the screw shaft sealing surface through the air seal channel to prevent material from entering. The right shaft end of the screw is connected to the reducer through a coupling and driven by a motor. The drain pipe is welded to the liquid collecting cylinder of the cylinder body. A pneumatic drain valve and a pneumatic back-blow valve are installed on the drain pipe. The plunger valve is used as the discharge outlet and the plunger valve switch is driven by the cylinder actuator. The above components form a barrel-type three-in-one and are installed on the frame.

[0006] The working principle of the cartridge filter washing and drying machine (cartridge three-in-one) of the present invention is as follows: 1. Filtration: The suspension in the crystallization tank is pressurized and measured by a flow meter, and enters the cartridge three-in-one through a pipeline connection. The suspension is squeezed on the surface of the filter screen, and the filtrate passes through the filter screen and enters the filtrate discharge system through the drain port. The retained solid matter accumulates on the surface of the filter screen to form a filter cake. The feed amount of the suspension is set according to the concentration and the preset thickness of the filter cake. When the preset substance in the filter chamber reaches the set value of the flow meter, the feed is stopped, the feed valve is closed, and the washing valve is opened to enter the washing process.

[0007] 2. Washing: The washing liquid in the washing tank is pressurized and measured by the flow meter, and enters the cartridge three-in-one filter through a pipeline connection. The washing liquid washes the filter cake in the spiral channel formed by the screw of the filter chamber. The washing liquid passes through the filter cake and the filter screen and enters the filtrate discharge system through the drain port. The washing amount of the washing liquid is set and controlled by the flow meter. After the washing is completed, the washing valve is closed and the next step is entered.

[0008] 3. Drying: Drying is divided into three steps: pressure filtration, drying and unloading.

[0009] 1. Filter pressing: Open the pneumatic filter pressing valve, and the high-pressure gas enters the cartridge three-in-one through the right end cover and the connected pipe. The high-pressure gas filters the filter cake in the spiral channel formed by the screw. The filtered liquid passes through the filter cake and the filter screen and enters the filtrate recovery system through the pneumatic drain valve. The filtration pressure can reach 12 bar. The filter pressing time can be set according to the material characteristics. After the filter pressing is completed, close the pneumatic filter pressing valve.

[0010] 2. Drying: After most of the liquid in the filter cake in the cartridge is removed by high-pressure filtration, the pneumatic drying valve is opened. The dried heated high-pressure gas (the gas temperature and gas medium are determined by the properties of the processed material) heats and dries the filter cake in the spiral channel formed by the screw of the filter chamber to dehydrate the filter cake. The dry hot gas passes through the filter cake to evaporate the filter cake mother liquid, and enters the gas recovery system through the filter screen and the pneumatic drain valve. The working pressure of the filter cartridge can reach 12 bar. The drying process duration can be set as needed. After drying, the pneumatic drying valve is closed.

[0011] 3. Unloading: First close the pneumatic ring gas, the spring will release the pneumatic ring through the lever screw, and at the same time, the compressed gas will enter the screw shaft sealing surface through the gas seal channel (see Figure 2 , Figure 3 ) to prevent material from entering, the cylinder actuator opens the plunger valve to unload, and at the same time turns on the reducer to drive the screw to rotate through the coupling to peel the filter material from the filter screen and push it to the discharge port. The pneumatic drain valve is closed in the discharge port pipe, and the pneumatic back-blow valve is opened. The compressed gas blows back from the outside of the filter screen to press the filter material out of the filter cartridge and regenerate the filter screen at the same time. When the filter material is agglomerated, the blade A welded at the end of the screw blade and the blade B welded on the end cover plate cut and crush the block filter material so that the filter material can be unloaded smoothly. The unloading is completed within the set unloading time. The plunger valve switch is completed by the cylinder actuator, and the unloading is completed after the screw reducer is turned off.

[0012] 4. The production capacity of a cartridge filter washing and drying machine (cartridge three-in-one) can be combined into multiple machines according to user needs (see Figure 8 ), single machine appearance (see Figure 4 , Figure 5 , Figure 6 ).

[0013] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: a cartridge filter, washing and drying (cartridge three-in-one) of the present invention adopts the screw unloading function and effect, realizes a closed unloading method, the shaft seal adopts a pneumatic ring seal, the sanitation level of the equipment meets the production requirements of the GMP workshop, and a cartridge filter, washing and drying machine (cartridge three-in-one) of the same specification is used as a unit to combine multiple units according to demand (see Figure 8 ), its technical characteristics: 1. It can directly replace filtering centrifuges, vertical three-in-one and other solid-liquid separation and drying equipment; 2. The processing capacity is adjustable, the volume is small, the energy consumption is low, there is no high-speed rotating part, the safety is good, and the maintenance cost is low; 3. High-pressure filtration, high-pressure washing, high-pressure dry hot gas penetrates the material layer for drying, screw unloading, PLC program control, high efficiency, fully enclosed operation, pneumatic ring sealing, and the hygiene level meets the production requirements of GMP workshops. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a structural view of a cartridge filter, washing and drying machine (cartridge type three-in-one) of the present invention.

[0015] Figure 2 This is a partial enlarged view of the right shaft end sealing structure.

[0016] Figure 3 This is a partial enlarged view of the left shaft end sealing structure.

[0017] Figure 4 It is an outline view.

[0018] Figure 5 It is CC view.

[0019] Figure 6 It is the BB view.

[0020] Figure 7 It is the AA section view.

[0021] Figure 8 It is a multi-unit composite view. DETAILED DESCRIPTION

[0022] The present invention is further described below with reference to the accompanying drawings by way of specific embodiments: A cartridge filter washing and drying machine (cartridge type three-in-one), (see Figure 1 ), including a filter screen 03 detachably installed in a cylinder filter screen support cylinder 04, the cylinder is welded by the filter screen support cylinder 04, the liquid collecting cylinder 05, the cylinder left plate 01 and the cylinder right plate 07, the plunger valve 20, the washing check valve 13, are installed on the left end cover 14 of the filter cartridge, the filter press check valve 18, the feed check valve 09 are installed on the right end cover 08 of the filter cartridge, the screw 06 passes through the left end bearing 41 of the filter cartridge (see Figure 2 ) and the right end bearing 35 of the filter cartridge (see Figure 3 ) is installed in the filter cartridge, and the two ends of the screw shaft are sealed with pneumatic rings 30 (Bei Figure 2 , Figure 3 ), when the equipment is in the filtering, washing and drying working stages, the screw 06 is in a stationary state, and the compressed gas is passed into the pressure equalizing groove 31 on the pneumatic ring 30 through the gas channel 39 to push the pneumatic ring 30 to be in close contact with the screw shaft sealing surface 38, which has a good sealing effect. The pneumatic ring 30 is equipped with three sealing rings 29, 36, and 37. When the reducer is started to drive the screw to rotate, the air inlet channel 32 of the pneumatic ring 30 is closed first, and the spring 34 separates the pneumatic ring 30 from the screw shaft sealing surface 38 through the lever screw 33. The compressed gas is opened to enter the screw shaft sealing surface 38 through the air seal channel 39 to prevent the material from entering. The right shaft end of the screw 06 is connected to the reducer 27 through the coupling 17 and driven by the motor 40. The discharge pipe 22 is welded to the liquid collecting cylinder 05 of the cylinder (see Figure 7), a pneumatic discharge valve 23 and a pneumatic back-blow valve 24 are installed on the discharge pipe 22, and the plunger valve 20 is driven to switch by the cylinder actuator 19 as a discharge outlet. The above parts form a cylindrical three-in-one and are installed on the frame 28.

Claims

1. A cartridge filter, washing and drying machine, hereinafter referred to as cartridge three-in-one, comprises a detachable filter screen installed in a cartridge filter screen support cylinder, the cartridge body is welded with a filter screen support cylinder, a liquid collecting cylinder, a left plate of the cartridge body and a right plate of the cartridge body, a plunger valve, a washing check valve, are installed on the left end cover of the filter cartridge, a filter press check valve, and a feed check valve are installed on the right end cover of the filter cartridge, the screw is installed in the filter cartridge through the left end bearing and the right end bearing of the filter cartridge, and pneumatic rings are used to seal the two ends of the screw shaft. When the equipment is in the filtering, washing and drying working stages, the screw is in a stationary state, and the compressed gas is passed into the pressure equalizing groove on the pneumatic ring through the gas channel to push the compressed gas The pneumatic ring is in close contact with the sealing surface of the screw shaft and has a good sealing effect. Three sealing rings are installed on the pneumatic ring. When the reducer is started to drive the screw to rotate, the pneumatic ring air inlet channel is closed first, and the spring separates the pneumatic ring from the sealing surface of the screw shaft through the lever screw. The compressed gas enters the screw shaft sealing surface through the air seal channel to prevent material from entering. The right shaft end of the screw is connected to the reducer through a coupling and driven by a motor. The drain pipe is welded to the liquid collecting cylinder of the barrel. A pneumatic drain valve and a pneumatic back-blow valve are installed on the drain pipe. The plunger valve is used as the discharge outlet and the plunger valve switch is driven by the cylinder actuator. The above components form a barrel-type three-in-one and are installed on the frame.

2. The cartridge filter washing and drying machine (cartridge type three-in-one) according to claim 1 is characterized in that: The screw unloading function and effect are adopted to realize a closed unloading method.

3. The cartridge filter washing and drying machine (cartridge type three-in-one) according to claim 1 is characterized in that: Pneumatic rings are used to seal both ends of the screw shaft. When the equipment is in the filtering, washing and drying working stages, the screw is in a stationary state. Compressed gas is introduced into the pressure equalizing groove on the pneumatic ring through the gas channel to push the pneumatic ring to closely contact the sealing surface of the screw shaft, which has a good sealing effect. There are three sealing rings on the pneumatic ring. When the reducer is started to drive the screw to rotate, the pneumatic ring air inlet channel is closed first, and the spring separates the pneumatic ring from the screw shaft sealing surface through the lever screw. The compressed gas is opened to enter the screw shaft sealing surface through the gas seal channel to prevent materials from entering.

4. The cartridge filter washing and drying machine (cartridge type three-in-one) according to claim 1 is characterized in that: Multiple units can be combined using cartridge filter-washing-drying machines (cartridge three-in-one) of the same specifications to meet production needs.

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