What are the main components of the belt filter press structure and working state?

Plate-and-frame filter press is an earlier machinery used in chemical dehydration. The plate and the frame are arranged alternately, and the filter cloth is covered on both sides of the filter plate, and the filter press chamber is formed between the plate and the frame with a pressing device. There is a small hole in the middle of the upper end of the plate and the frame, which becomes a channel after compression, and the sludge that is pressurized enters the filter chamber by this channel, the surface of the filter plate is engraved with a groove, and the lower end is drilled with a hole for filtrate discharge, and the filtrate is under pressure, through the filter cloth, and the filter machine is discharged along the groove and the hole, so that the sludge is dewatered.

So, what material is the filter cloth used for the plate and frame filter press? The filter cloth matched with the plate and frame filter press is called plate and frame filter cloth, the main material is polypropylene, polyester and nylon, and the commonly used specifications and models are polypropylene 750A, 750B, 750AB, 840AB, 108C, polyester 621, nylon 6533, etc. Different materials....

Crawling web analysis:

1 Frame: The belt press filter frame is mainly used to support and fix the press roll system and other components.

2 Press roller system: It is composed of rollers arranged in order from large to small in diameter. The sludge is clamped by the upper and lower filter belts, and when it passes through the press roller in turn, a pressure gradient from small to large is formed under the action of the filter belt tension, so that the pressing force of the sludge in the dewatering process continues to increase, and the water in the sludge is gradually removed.

3. Gravity zone dehydration device: It is mainly composed of gravity zone bracket and material trough. The flocculated material removes a large amount of water in the gravity zone, and the fluidity becomes poor, creating conditions for future extrusion and dehydration.

4. Wedge-shaped zone dewatering device: The wedge-shaped zone formed by the upper and lower filter belts exerts extrusion force to the clamped material and carries out pre-pressure dehydration to meet the requirements of the material liquid content and fluidity of the pressing and dewatering section.

5. Filter belt: It is the main component of the belt press filter, and the separation process of the solid phase and liquid phase of the sludge is the filter medium from the upper and lower filter belts, and the pressing force required to remove the moisture of the material is obtained by bypassing the press roller under the tensioning force of the upper and lower filter belts.

6. Filter belt adjustment device: It is composed of actuators: cylinder, adjustment roller signal anti-air pressure, and electrical system.

Its function is to adjust the deviation of the filter belt caused by uneven belt tension, roller installation error, uneven feeding and other reasons, so as to ensure the continuity and stability of the belt press filter.

7.Filter belt cleaning device: It is composed of a sprinkler, a cleaning water receiving box and a cleaning hood.

When the filter belt travels, it continuously passes through the cleaning device, and is impacted by the pressure water sprayed by the sprinkler, and the material remaining on the filter belt is separated from the filter belt under the action of pressure water, so that the filter belt is regenerated and prepared for the next dehydration process.

8.Filter belt tensioning device: It is composed of a tensioning cylinder, a tensioning roller and a synchronous mechanism, and its function is to tension the filter belt, and provide the necessary tension conditions for the production of the pressing force of pressing dehydration, and the adjustment of the tension size can be realized by adjusting the air pressure of the tensioning cylinder of the air pressure system.

9. Discharging device: It is composed of scraper plate, knife holder, unloading roller, etc., and its function is to peel off the dewatered filter cake from the filter belt to achieve the purpose of discharging.

10. Transmission device: It is composed of motor, reducer, gear transmission mechanism, etc., which is the power of the filter belt traveling, and can meet the requirements of different belt speeds in the process by adjusting the speed of the reducer.

11. Pneumatic system: The system is mainly composed of power source (air storage tank, motor, air pump, etc.), actuator components (cylinder) and air pressure control components (including pressure relay, pressure flow and direction control valve). Through the air pressure control element, the air pressure, flow rate and direction are controlled to ensure that the air pressure actuator has a certain thrust and speed, and works normally according to the predetermined procedure.

It is the power to complete the filter belt tensioning and adjustment operation**.

Analysis reasons for deviation of the filter cloth of the vacuum belt filter: 1. The force on both sides of the filter belt is uneven: The filter cloth of the vacuum belt filter is caused by product quality problems, resulting in the length of the elastic cloth at both ends, etc., the tension cylinder leaks, the tension scale on both sides is different, and the filter cloth of the vacuum belt filter is not washed thoroughly, resulting in slag in the drum and not paved after replacing the porous filter plate.

2. There is a driving force to make the track transversely displaced, the head wheel is tilted, resulting in non-perpendicular, and a certain guide roller is tilted. 3. The automatic deviation correction device fails, the induction board is stuck (cannot be sensed) the proximity switch is damaged, the cylinder leaks, the telescopic size becomes shorter or does not move, there are debris in the slideway of the correction roller, the bearing of the automatic correction roller is damaged, and the rotation is not flexible.

Vacuum belt filter cloth deviation treatment method:

1. Replace the filter cloth of the vacuum belt filter, and strictly check the quality of the purchased filter cloth: disassemble and inspect the tension cylinder, replace the sealing ring, increase the amount of flushing water and the tightness of the scraper appropriately, re-install the porous filter plate, determine the leveling, and the filter plate has foreign bodies in the morning.

2. Correct the head roller and make it tilt: adjust the position or angle of the guide roller.

3. Use the adjustment of the installation distance of the induction plate, replace the proximity switch, replace the sealing ring of the correction cylinder, clear the foreign objects in the slideway of the correction roller, and replace the bearing of the correction roller.

The general filter press component, frame part, and rack part are the main body of the machine, which is used to support the filtration mechanism and connect other components. It is mainly composed of the welding process of thrust plate, hold-down plate, cylinder block and main beam and other components.

The belt filter press is divided into an integrated machine and a split machine, and the integrated machine is not divided into head and tail, and the length of this all-in-one machine is relatively short. The split machine is divided into two parts: nose and tail.

Features of chamber filter press:

1. The reinforced polypropylene filter plate is molded by patented technology, with high strength, light weight, corrosion resistance, acid and alkali resistance, non-toxic and tasteless;

2. Jack pressing, mechanical locking, reasonable structure, convenient operation and maintenance;

3. The maximum filtration pressure is suitable for filtering materials with low solid content and easy filtration;

4. The frame is made of all-steel welded parts, with stable mechanical properties, small model and beautiful appearance.

5. The operation is simple, safe, labor-saving, and the operation is through the buttons on the control board to achieve continuous action, which is equipped with a variety of safety devices to ensure the safety of operators.

Applications of chamber filter presses:

It is widely used in petroleum, chemical, metallurgy, coal, medicine, light industry, food, environmental protection, textile, clay and other industries. It is used for solid-liquid separation of various suspensions, and has a wide range of applications.

The working principle of the plate-and-frame filter press:

The plate and frame filter press is composed of five parts: filter plate, hydraulic system, filter press frame, filter plate transmission system and electrical system. The principle of the working operation of the plate and frame filter press is relatively simple, first by the hydraulic force to press the plate and frame group, the precipitated sludge enters from the middle, distributes to the filter cloth, and realizes the dehydration method of solid and liquid separation through the filter medium. At present, the plate and frame filter press is a machine to realize the solid-liquid separation of slurry, because of its good sealing, high filtration pressure, easy to wash, strong adaptability to slurry and other advantages, so it can be widely used in water treatment, metallurgy, coal washing, food, medicine, chemical industry, and other industries The above information is only conceptual on the Internet.

Structural references.

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Summary. The working principle of the filter press is to use a certain pressure to separate the solid particles in the mixture from the liquid, so as to achieve the purpose of solid-liquid separation. The main process is as follows:

1.Feeding: The mixture to be processed is fed into the filter press through the feed pipe.

2.Filtration: When the mixture passes through the filter media (such as filter cloth, filter plate, etc.), the solid particles are intercepted on the filter media, while the liquid permeates out through the filter media.

3.Compression: When there are more and more solid particles on the filter media, the pressure needs to be increased to compress the filter media to ensure that the liquid can penetrate out smoothly.

At this time, the filter press starts the compression mechanism to compress the filter medium. 4.Slag discharge:

When the solid particles on the filter media reach a certain number, the solid particles on the filter media need to be removed. At this time, the filter press activates the slag discharge mechanism to discharge the solid particles. 5.

Dehydration: When the liquid has permeated out, it needs to be dehydrated. At this time, the water in the liquid can be evaporated by heating, decompression, etc., so as to obtain dry solid particles.

The working principle of the filter press is to use a certain pressure to separate the solid particles in the mixture from the liquid, so as to achieve the purpose of solid-liquid separation. Its main process is as follows:1

Feeding: The mixture to be processed is fed into the filter press through the feed pipe. 2.

Filtration: When the mixture passes through the filter media (such as filter cloth, filter plate, etc.), the solid particles are intercepted on the filter media, while the liquid permeates out through the filter media. 3.

Pressure grinding source tightness: When there are more and more solid particles on the filter media, it is necessary to increase the pressure to compress the filter media to ensure that the liquid can penetrate smoothly out of the crack. At this time, the filter press starts the compression mechanism to compress the filter medium.

4.Slag discharge: When the solid particles on the filter media reach a certain number, the solid particles on the filter media need to be removed.

At this time, the filter press activates the slag discharge mechanism to discharge the solid particles. 5.Dehydration:

When the liquid seeps out, it needs to be dehydrated. At this time, the water in the liquid can be evaporated by heating, decompression, etc., so as to obtain dry solid particles. 6.

Qinqin, the filter press continuously increases the pressure of collapse and cracking, and separates the solid particles in the mixed auspicious matter from the liquid, so as to achieve the purpose of solid-liquid separation.