Device for quickly dredging backflow pipeline of plate-and-frame filter press

Abstract

The utility model discloses a device for quickly dredging a backflow pipeline of a plate-and-frame filter press, which belongs to the technical field of filter pressing and comprises a plate-and-frame filter press and a feeding tank, a backflow pipeline is connected between the plate-and-frame filter press and the feeding tank and comprises an n-shaped pipeline, and the n-shaped pipeline is higher than the top end of the plate-and-frame filter press. The end, away from the plate-and-frame filter press, of the n-shaped pipeline is connected with a first elbow pipeline, a round hole is formed in the corner in the first elbow pipeline, the dredging pipeline comprises a first pipeline capable of extending into the round hole, one end of the first pipeline is gradually narrowed in the conveying direction, and the thin end of the first pipeline is connected with a bent thin pipeline. According to the utility model, water flowing out of the dredging pipeline can easily wash corncob residues on the inner wall of the pipeline of the first elbow, so that the plate-and-frame filter press can be quickly dredged without detaching the backflow pipeline during normal backflow operation, no residue slurry flows to the ground, the manpower and the time are saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter pressing, in particular to a device for quickly clearing a reflux pipeline of a plate and frame filter press. Background Art

[0002] The xylose factory mainly uses corn cobs as raw materials to extract xylose by acid hydrolysis. During the hydrolysis process, the raw corn cobs are mostly powdered, with a small number of granular and blocky corn cob residues due to high temperature and high pressure. The corn cob residue after hydrolysis still contains a lot of sugar and needs to be washed and discharged. According to the good water permeability of the material particles and residue blocks, a plate and frame filter press is often used to remove the moisture in the corn cob residue and recover the sugar-containing water and residue. Part of the material in the plate and frame filter press will flow back to the feed tank. The feed tank, pump and plate and frame filter press form a closed-loop circulation system, and the slurry flows back in the closed-loop circulation system. The height of the pipe connected to the outlet of the plate and frame filter press is slightly higher than the top of the plate and frame filter press. When the plate and frame filter press is unloaded and installed, the pipe will move with it, so the pipe uses an n-type rotary stainless steel hose. During the material reflux process, the reflux flow is controlled by an automatic regulating valve. During the process of reducing the valve opening, a large slag block is retained at the valve. As the reflux continues, the slag block gathers in the pipeline from the valve to the outlet section of the plate and frame filter press. When the concentration of the prepared slag slurry is too high or too low, it will cause blockage at the elbow of the pipeline. After the blockage occurs, it will affect the normal reflux of the slurry, so it needs to be dredged regularly. Existing dredging technology is mostly manual cleaning, which requires manual disassembly of the pipeline for dredging. During disassembly, the slag slurry flows to the site, wasting materials, affecting the site environment, and is laborious and time-consuming, affecting production operations, causing labor waste, and reducing production efficiency.

[0003] In view of the above problems existing in the prior art, the utility model designs and manufactures a device for quickly clearing the return pipe of a plate and frame filter press in combination with many years of design and use experience in related fields to overcome the above defects. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a device for quickly clearing the return pipe of a plate and frame filter press. The return pipe can be quickly cleared without disassembling the return pipe without affecting the normal return of the slurry, and the slurry will not flow to the ground, thus saving manpower and time and greatly improving production efficiency.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a device for quickly clearing the reflux pipeline of a plate-frame filter press, comprising a plate-frame filter press and a feed tank, a reflux pipeline is connected between the plate-frame filter press and the feed tank, the reflux pipeline comprises an n-shaped pipeline, the n-shaped pipeline is higher than the top of the plate-frame filter press, and the end of the n-shaped pipeline away from the plate-frame filter press is connected to a first elbow pipeline;

[0006] A circular hole is provided at the inner corner of the first elbow pipe, a flange short pipe is fixedly connected above the circular hole, and a blind plate is detachably connected above the flange short pipe;

[0007] It includes a dredging pipe, which includes a first pipe that can be inserted into a circular hole, one end of the first pipe gradually narrows along the conveying direction, the thin end of the first pipe is connected to a curved thin pipe, after the first pipe is inserted into the circular hole, the thin pipe is away from the first pipe end and can be directed toward the inner wall of the first elbow pipe corner, and the first pipe is connected to a water pipe away from the thin pipe end.

[0008] Preferably, the reflux pipe also includes a second elbow pipe and a straight pipe, one end of the second elbow pipe is connected to the n-shaped pipe away from the first elbow pipe end through the straight pipe, and the other end of the second elbow pipe is connected to the plate and frame filter press.

[0009] Preferably, along the conveying direction of the return pipe, an automatic regulating valve is provided at a position of the return pipe away from the first elbow pipe.

[0010] Preferably, a reinforcing rib is provided between the flange short pipe and the first elbow pipe.

[0011] Preferably, a control valve is provided on the water delivery pipe.

[0012] Preferably, the diameter of the water pipe is less than or equal to the diameter of the circular hole at the top end of the first elbow pipe.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model provides a circular hole and a first pipe used in conjunction with the circular hole on the first elbow pipe. The curved thin pipe on the first pipe can well adapt to the bending angle of the inner wall of the first elbow pipe. The water flowing out of the thin pipe can easily flush the corn cob residue on the inner wall of the first elbow pipe, thereby driving the corn cob residue blocked in other parts to flow into the feed tank along with the water flow, thereby achieving rapid dredging.

[0015] 2. The utility model provides a circular hole at the corner of the first elbow pipe. When the reflux volume is low, the first elbow pipe is not full of slurry. After the blind plate is opened, the slurry will not flow to the ground, thereby achieving dredging during normal reflux operation of the plate and frame filter press and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a front view of a device for quickly clearing the return pipe of a plate and frame filter press.

[0017] Figure 2 The present invention is a top view of an elbow pipe in a device for quickly clearing the return pipe of a plate and frame filter press.

[0018] Figure 3The present invention is a schematic diagram of a device for quickly clearing the return pipe of a plate and frame filter press.

[0019] Figure 4 A partial enlargement of a thin pipe in a device for quickly clearing the return pipe of a plate and frame filter press Figure I .

[0020] In the figure: 1-plate and frame filter press, 2-reflux pipe, 3-elbow pipe, 4-round hole, 5-blind plate, 6-automatic regulating valve, 7-feed tank, 8-flange short pipe, 9-thin pipe, 10-first pipe, 11-water pipe, 12-control valve, 13-second elbow pipe, 14-n-shaped pipe. DETAILED DESCRIPTION

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0022] like Figure 1 , 2 As shown, a device for quickly clearing the return pipe of a plate and frame filter press comprises a plate and frame filter press 1 and a feed tank 7, a return pipe 2 is connected between the plate and frame filter press 1 and the feed tank 7, the return pipe 2 comprises an n-shaped pipe 14, the n-shaped pipe 14 is higher than the top of the plate and frame filter press 1, the end of the n-shaped pipe 14 away from the plate and frame filter press 1 is connected to a first elbow pipe 3, a circular hole 4 is provided at the inner corner of the first elbow pipe 3, a flange short pipe 8 is fixedly connected above the circular hole 4, and a blind plate 5 is detachably connected above the flange short pipe 8, as shown in FIG. Figure 3 , 4 As shown, it includes a dredging pipe, which includes a first pipe 10 that can be inserted into the circular hole 4. One end of the first pipe 10 gradually narrows along the conveying direction. The thin end of the first pipe 10 is connected to a curved thin pipe 9. After the first pipe 10 is inserted into the circular hole 4, the thin pipe 9 can be away from the end of the first pipe 10 and face the inner wall of the corner of the first elbow pipe 3. The thin pipe 9 is 7-12mm, and the bending angle of the thin pipe 9 is 45°-80°. The first pipe 10 is connected to a water pipe 11 away from the end of the thin pipe 9.

[0023] The return pipe 2 also includes a second elbow pipe 13 and a straight pipe. One end of the second elbow pipe 13 is connected to the end of the n-shaped pipe 14 away from the first elbow pipe 3 through a straight pipe. The other end of the second elbow pipe 13 is connected to the plate and frame filter press 1. Along the conveying direction of the return pipe 2, an automatic regulating valve 6 is provided on the return pipe 2 away from the first elbow pipe 3, and a reinforcing rib is provided between the flange short pipe 8 and the first elbow pipe 3. A control valve 12 is provided on the water pipe 11, and the diameter of the water pipe 11 is less than or equal to the diameter of the circular hole 4.

[0024] The utility model provides a circular hole 4 on the first elbow pipe 3 of the reflux pipe 2. When the reflux volume is small and causes the corn cob residue to be blocked in the pipe between the automatic regulating valve 6 and the plate and frame filter press 1, the blind plate 5 is removed, and the first pipe 10 can be extended into the circular hole 4. Water flows into the first elbow pipe 3 from the dredging pipe. The first pipe 10 can increase the pressure of the water outflow. The thin pipe 9 on the dredging pipe can be bent according to actual needs. The thin pipe 9 adapts to the bending angle of the inner wall of the first elbow pipe 3. The thin pipe 9 is not easy to be blocked during dredging. The water flowing out of the thin pipe 9 can more easily flush the inner wall of the first elbow pipe 3, loosen the corn cob residue blocked at the first elbow pipe 3, and then make the corn cob residue blocked at other places of the reflux pipe 2 flow into the feed tank 7 with the water flow. The control valve 12 on the water pipe 11 can control the water flow. When the reflux volume is small, the slurry will not fill the first elbow pipe 3. Therefore, the blind plate 5 can be removed when the plate and frame filter press 1 is working normally to perform the above-mentioned unblocking operation. At the same time, no slurry will leak from the circular hole 4, which has high production efficiency and saves a lot of manual disassembly and cleaning operations of the pipeline.

[0025] Specific operation process

[0026] After the reflux pipe 2 is clogged with corncob residue, remove the blind plate 4, extend the first pipe 10 on the dredging pipe into the circular hole 4, the thin pipe 9 is 10 mm and bent at 75°, adjust the angle so that the thin pipe 9 is aligned with the inner wall of the first elbow pipe 3, connect the water pipe 11 to the tap water pipe, and spray water from the thin pipe 9 at high pressure to dredge the inner wall of the first elbow pipe 3. The corncob residue flows into the feed tank 7 along with the water flow, and the corncob residue blocked in other places of the reflux pipe 2 also flows into the feed tank 7 along with the water flow. According to the blockage situation, adjust the control valve 12 to adjust the water outflow in the thin pipe 9. After the dredging is completed, remove the water pipe 11 from the tap water pipe, take out the first pipe 10 from the circular hole 4, and reinstall the blind plate 5 on the flange short pipe 8.

[0027] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A device for quickly clearing the reflux pipeline of a plate and frame filter press, characterized in that: The invention comprises a plate-frame filter press (1) and a feed tank (7), wherein a return pipe (2) is connected between the plate-frame filter press (1) and the feed tank (7), wherein the return pipe (2) comprises an n-shaped pipe (14), wherein the n-shaped pipe (14) is higher than the top of the plate-frame filter press (1), and wherein the end of the n-shaped pipe (14) away from the plate-frame filter press (1) is connected to a first elbow pipe (3); A circular hole (4) is provided at the inner corner of the first elbow pipe (3), a flange short pipe (8) is fixedly connected above the circular hole (4), and a blind plate (5) is detachably connected above the flange short pipe (8); The dredging pipeline comprises a first pipeline (10) which can be inserted into a circular hole (4), one end of the first pipeline (10) gradually narrows along the conveying direction, the thin end of the first pipeline (10) is connected to a curved thin pipeline (9), and after the first pipeline (10) is inserted into the circular hole (4), the end of the thin pipeline (9) away from the first pipeline (10) can be directed toward the inner wall of the corner of the first elbow pipeline (3); The end of the first pipeline (10) away from the thin pipeline (9) is connected to a water pipe (11).

2. A device for quickly clearing the reflux pipeline of a plate and frame filter press according to claim 1, characterized in that: The return pipe (2) further comprises a second elbow pipe (13) and a straight pipe, wherein one end of the second elbow pipe (13) is connected to an end of the n-shaped pipe (14) away from the first elbow pipe (3) through the straight pipe, and the other end of the second elbow pipe (13) is connected to the plate and frame filter press (1).

3. The device for quickly clearing the reflux pipeline of a plate and frame filter press according to claim 1, characterized in that: Along the conveying direction of the return pipe (2), an automatic regulating valve (6) is provided on the return pipe (2) away from the first elbow pipe (3).

4. The device for quickly clearing the reflux pipeline of a plate and frame filter press according to claim 1, characterized in that: A reinforcing rib is provided between the flange short pipe (8) and the first elbow pipe (3).

5. The device for quickly clearing the reflux pipeline of a plate and frame filter press according to claim 1, characterized in that: The water delivery pipe (11) is provided with a control valve (12).

6. The device for quickly clearing the reflux pipeline of a plate and frame filter press according to claim 1, characterized in that: The diameter of the water delivery pipe (11) is less than or equal to the diameter of the circular hole (4).

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