CN204952385U - Press filter - Google Patents

Abstract

The utility model discloses a filter press, which comprises a frame. A water inlet is arranged at the center of one side of the frame. A feed pipe is arranged at the water inlet. The feed pipe is respectively connected with a backwash pipe and a mud input pipe. The cleaning pipe is connected to the clean water bucket through the clean water pump, and the mud input pipe is connected to the mixing tank through the feed pump. There are two beams at both ends of the frame, and a compression plate and a thrust plate are fixed between the two beams. A filter plate is installed between the tight plate and the thrust plate, and a liquid receiving tank is arranged on the lower side of the filter plate to receive the filtrate leaked between the filter plates. The filter press of the utility model is provided with a backwash pipe at the liquid inlet pipe to backwash the liquid inlet pipeline and the feed pump, clean the pipeline and the feed pump, and ensure the normal use of the filter press; the filter press of the utility model The machine is equipped with a liquid receiving tank at the lower end of the filter plate to prevent contamination of the ground and ensure the normal production of the workshop.

Description

a filter press

technical field

The utility model relates to the field of solid-liquid separation equipment, in particular to a filter press used for sewage treatment in a mixing station.

Background technique

The current sewage treatment technology of mixing plants mainly includes two aspects: one is sedimentation and separation technology, which is based on the gravity of solid particles for sedimentation. The water content of the solid is high, and the liquid contains a large number of particles, which cannot be discharged normally. In addition, during the sedimentation process, a large number of solid particles will adhere to the pool wall and be difficult to handle, which increases labor costs and work intensity; the second is the pressure filtration treatment technology, The most commonly used method is to use 20MPa hydraulic pressure to combine the filter plates of the filter press to form a filter chamber. A filter cloth is installed between the filter plates, and the material is transported to the filter chamber through the pump body, and the liquid is separated through the filter cloth. The solid is trapped in the filter chamber to form a filter cake, and the liquid is discharged through the liquid outlet. This treatment technology has high solid-liquid separation efficiency and fast processing speed, but a small amount of liquid leaks from between the filter plates during the filter press process, polluting the ground.

In addition, after the filter press process is completed, there is still mud in the mud pump and pipeline, which is likely to cause pipeline blockage and affect normal use.

Contents of the invention

In order to solve the problems in the prior art, the purpose of this utility model is to provide a filter press with backwashing function. The filter press of the utility model is provided with a liquid receiving tank at the lower end of the filter plate, and the filtrate permeated between the filter plates It flows into the liquid receiving tank for centralized recovery to prevent ground pollution and reduce labor costs.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a filter press, including a frame, a water inlet is provided at the center of one side of the frame, two beams are provided at both ends of the frame, and between the two beams There is a pressing plate and a thrust plate, and a filter plate is installed between the pressing plate and the thrust plate. There are water outlets on the left and right sides under the filter plate. The water outlets are connected to the water outlet pipe, and the filtrate flows out of the machine through the water outlet pipe. , the frame is also provided with a hydraulic pressing system, the hydraulic pressing system drives the pressing plate to press the filter plate to carry out the filter pressing process, it is characterized in that a feeding pipe is arranged at the water inlet, and the feeding pipe The feeding pipes are respectively connected with the backwash pipe and the mud input pipe, the backwash pipe is connected with the clean water bucket through the clean water pump, and the mud input pipe is connected with the stirring tank through the feed pump; the frame is also provided with There is a liquid receiving tank, and the said liquid receiving tank is located on both sides below the filter plate, and is used to receive the filtrate seeped between the filter plates.

Wherein, the frame is made of carbon steel.

Wherein, the filter plate is a polypropylene filter plate.

Wherein, a filter cloth is arranged between the filter plates, and the filter cloth is used to block solid mud.

Wherein, the filter cloth is polypropylene anti-acid and alkali filter cloth.

Wherein, the feed pump is a mud pump or a wear-resistant slurry pump.

Wherein, the stirring tank is provided with a stirring device for preventing the mud from settling.

Compared with the prior art, the utility model has the beneficial effects: the filter press of the utility model is provided with a liquid receiving tank at the lower end of the filter plate, and the filtrate leaked between the filter plates is collected and recovered through the liquid receiving tank to prevent the ground from being polluted, Guarantee the normal production of the workshop; the filter press of the present invention is provided with a backwash pipe at the liquid inlet pipe. Normal use.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is the structural representation of filter press of the present utility model;

Fig. 2 is the feed pipe of the filter press of the present utility model, the connection diagram of the backwash pipe and the mud input pipe;

Fig. 3 is a working diagram of the filter press of the present invention.

detailed description

As shown in Figure 1, a filter press includes a frame 1, a water inlet 9 is provided at the center of one side of the frame 1, two beams are provided at both ends of the frame 1, and a pressure filter is arranged between the two beams. Tightening plate and thrust plate, a filter plate 2 is installed between the compression plate and the thrust plate, and a hydraulic pressing system is also installed on the frame 1, and the hydraulic pressing system drives the pressing plate to press the filter plate 2 for pressing. In the filtration process, the lower side of the filter plate 2 is provided with a liquid receiving tank 8 to receive the filtrate permeated between the filter plates 2 for centralized recovery.

The liquid receiving tank 8 provided by the filter press of the utility model solves the problem that the traditional filter press pollutes the ground of the site during use and causes a large amount of dust.

As shown in Figure 2, a feed pipe 3 is provided at the water inlet, and the feed pipe 3 is connected to the backwash pipe 4 and the mud input pipe 5 respectively. Feed pump 6 is connected with stirring tank 7 . When pressing the filter, open the feed pump 6, and input the mud into the filter press through the mud input pipe 5, and carry out the normal press filter process; The clean water in the clear water bucket enters the feed pipe 3, and the clean water enters the feed pump 6 through the feed pipe 3 in reverse, and cleans the feed pipe 3 and the feed pump 6 to prevent blockage, increase maintenance costs, and ensure pressure. normal use of the filter.

The filter press of the present utility model is provided with a backwash pipe 4 at the feed pipe 3, which solves the problem of pipe hardening and blockage of the pipe, and at the same time solves the problem of the loss of the feed pump 6, reduces the loss of the pump body, and saves maintenance cost.

As shown in Figure 3, the sewage containing gravel or mud is discharged into the mixing tank 7, and the sewage is pumped into the filter press through the mud pump or the wear-resistant slurry pump, and the filter press process is carried out, and the filter cake is retained on the filter cloth. The filtrate is discharged through the water outlet, and the filtrate leaked between the filter plates 2 is concentratedly recovered through the liquid receiving tank 8; after the pressure filtration is completed, the mud pump or the wear-resistant slurry pump is turned off, the clean water pump is turned on, and the clean water enters the liquid inlet pipe 3, And then reversely flow into the feed pump 6 to clean the feed pump 6 to prevent mud compaction from affecting the normal use of the filter press.

The specific implementation above is just an example, and it is for those skilled in the art to better understand this patent, and it cannot be understood as a limitation on the scope of this patent; as long as it is any equivalent change made according to the spirit disclosed by this patent or modifications, all fall within the scope of this patent.

Claims (7)

1. A filter press, comprising a frame (1), a water inlet (9) is provided at the center of one side of the frame (1), two beams are provided at both ends of the frame (1), and between the two beams A compression plate and a thrust plate are arranged between the compression plate and the thrust plate, and a filter plate (2) is installed between the compression plate and the thrust plate. Water outlets are respectively arranged on the left and right sides below the filter plate (2), and the water outlets are connected to the water outlet pipes. The filtrate flows out of the machine through the outlet pipe, and the frame (1) is also equipped with a hydraulic pressing system, which drives the pressing plate to press the filter plate (2) to carry out the filter pressing process, which is characterized in that, The water inlet (9) is provided with a feed pipe (3), and the feed pipe (3) is respectively connected with the backwash pipe (4) and the mud input pipe (5), and the backwash pipe (4) Connect the clean water bucket with the clean water pump, and the mud input pipe (5) is connected with the mixing tank (7) through the feed pump (6); The frame is also provided with a liquid receiving tank (8), and the liquid receiving tank (8) is located on both sides below the filter plate (2), and is used to receive the filtrate seeped between the filter plates (2). 2. The filter press according to claim 1, characterized in that, the frame (1) is made of carbon steel. 3. The filter press according to claim 1, characterized in that, the filter plate (2) is a polypropylene filter plate. 4. The filter press according to claim 1, characterized in that a filter cloth is arranged between the filter plates (2) and the filter plates (2), and the filter cloth is used to block solid mud. 5. The filter press according to claim 4, wherein the filter cloth is a polypropylene anti-acid and alkali filter cloth. 6. The filter press according to claim 1, characterized in that, the feed pump (6) is a mud pump or a wear-resistant slurry pump. 7. The filter press according to claim 1, characterized in that, the stirring tank (7) is provided with a stirring device for preventing mud from settling.