A plate-and-frame filter press with a debonding air channel

Abstract

This utility model belongs to the technical field of filter press equipment, specifically relating to a frame plate filter press with a cake-removing air passage. A frame plate filter press with a cake-removing air passage includes a main support, with a filter press frame and a pressing frame at each end, and a main beam between the filter press frame and the pressing frame; several filter press plate assemblies are arranged between the filter press frame and the pressing frame, and the filter press plate assemblies are mounted on the main beam; the filter press frame has four liquid guiding channels and one mud guiding channel, the pressing frame has a hydraulic plate, and the hydraulic plate has a hydraulic pump; the filter press plate assembly includes a filter press plate, with liquid guiding holes at each of the four corners and a mud guiding hole at the center of the filter press plate; filter press grooves are provided on both sides of the filter press plate, and mud pushing plates are hinged to the filter press grooves; the filter press plate has an air passage inside, and several air ports are provided at the bottom of the filter press groove, all connected to the air passage, with one end of the air passage opening to the top of the filter press plate.

Description

Technical Field

[0001] This utility model belongs to the technical field of filter press equipment, specifically relating to a frame plate filter press with a cake removal air passage. Background Technology

[0002] A filter press is a crucial piece of equipment in industrial production, its core working principle being the effective separation of solids and liquids based on pressure difference. This equipment mainly consists of several parts, including filter plates, filter cloth, a pressing device, and a frame. In actual operation, a suspension containing solid particles (usually called a slurry) is pumped under pressure into a closed space, or filter chamber, composed of multiple filter plates. During this process, the liquid portion (the filtrate) is discharged through the filtration action of the filter cloth, while the solid particles are retained, ultimately forming a filter cake with a relatively low moisture content. Due to its superior performance in achieving efficient solid-liquid separation, filter presses are widely used in many industrial fields requiring this separation technology, especially in processing materials that are difficult to filter, contain fine particles, or have high viscosity, where they demonstrate unique advantages.

[0003] Plate filter presses, as a special type of filter press, are widely used in many different industrial fields due to their simple maintenance and high-throughput filtration capabilities. However, despite their excellent performance in many aspects, plate filter presses have some significant shortcomings in the cake removal process. These shortcomings are mainly reflected in the cumbersome operation process and the large amount of water consumed during cake removal. Typically, cake removal requires operators to use long-handled tools to tap the filter plates to shake off the sludge clumps adhering to them. Furthermore, thoroughly washing away these sludge clumps requires a large amount of water for rinsing, which not only increases operating costs but also has a potential environmental impact.

[0004] In order to improve the cake removal efficiency of the frame plate filter press, this utility model aims to provide a frame plate filter press with a cake removal air passage. Utility Model Content

[0005] The purpose of this invention is to provide a frame-plate filter press with a cake removal air passage to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A frame-plate filter press with a cake removal air passage includes a main support, with a filter press frame and a pressing frame at each end of the main support, and a plurality of main beams between the filter press frame and the pressing frame; a plurality of filter press plate assemblies are arranged between the filter press frame and the pressing frame, and the plurality of filter press plate assemblies are mounted on the main beams; four liquid guiding channels and one mud guiding channel are provided at the filter press frame, a hydraulic plate is provided at the pressing frame, and a hydraulic pump is provided at the hydraulic plate;

[0008] The filter press assembly includes a filter press plate, with liquid guiding holes at all four corners and a mud guiding hole at the center. Filter press grooves are provided on both sides of the filter press plate, and mud pushing plates are hinged to the filter press grooves. An air passage is provided inside the filter press plate, and several air ports are provided at the bottom of the filter press grooves. These air ports are connected to the air passages, and one end of the air passage opens to the top of the filter press plate.

[0009] Preferably, the pusher plate is embedded in the filter press trough, the lower edge of the pusher plate is hinged to the lower edge of the filter press trough, and a limiting block is provided at the hinge point between the pusher plate and the filter press trough, the limiting block limiting the maximum opening angle between the pusher plate and the filter press trough.

[0010] Preferably, the mud pusher has a mud pusher through hole at the center and a mud separator ring is provided at the mud pusher through hole.

[0011] Preferably, the filter press plate is provided with filter press plate support wings on both sides, and a moving wheel is provided below the filter press plate support wings; the filter press plate moves on the main beam by means of the moving wheel.

[0012] Preferably, the hydraulic plate is provided with hydraulic plate support wings on both sides, and a moving wheel is provided below the hydraulic plate support wings; the hydraulic plate moves on the main beam by means of the moving wheel.

[0013] Preferably, the lower part of the main support is provided with a mud guide plate, which is A-shaped.

[0014] Preferably, when the mud-pushing plate is pressed against the bottom of the filter press tank, the mud-separating ring is embedded in the mud-guiding hole, and the outer wall of the mud-separating ring is pressed against the inner wall of the mud-guiding channel.

[0015] Preferably, the four liquid guiding channels are arranged in a rectangular array at the four corners of the filter press frame, and the mud guiding channel is located at the center of the filter press frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The present invention provides a frame plate filter press with a cake removal air passage, wherein a pusher plate is provided at the filter press tank, and the lower edge of the pusher plate is connected to the lower edge of the filter press tank by a hinge; an air port is provided in the filter press tank, and gas is pumped into the space between the pusher plate and the filter press tank through the air port to achieve the tilting of the pusher plate; the filter cake attached to the surface of the pusher plate falls off the surface of the pusher plate under the action of gravity.

[0018] (2) The present invention provides a frame plate filter press with a cake removal air passage, wherein a mud guide hole is provided in the central area of ​​the filter plate, a mud pusher plate through hole is provided in the center of the mud pusher plate, and a mud separator ring is installed at the mud pusher plate through hole. The mud separator ring is made of soft rubber material. When the mud pusher plate is tightly fitted with the filter press tank, the mud separator ring is embedded in the mud guide hole. The function of the mud separator ring is to effectively block a large amount of mud from entering the gap between the mud pusher plate and the filter press tank, while ensuring that the efficiency of pumping gas between the two is not affected.

[0019] (3) The frame plate filter press with de-cake air passage provided by this utility model has an A-shaped mud guide plate at the lower end of the main support so that the filter mud falling from the filter plate can be directly guided to both sides of the main support along the guiding action of the mud guide plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the filter press plate of this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the filter press plate of this utility model when the pusher plate is tilted. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the structure of the filter press plate of this utility model when the pusher plate is tilted. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the structure of the filter press plate of this utility model. Figure 2 ;

[0025] In the diagram: 1-Main support; 2-Filter press frame; 3-Pressure frame; 4-Main beam; 5-Liquid guiding channel; 6-Sludge guiding channel; 7-Hydraulic plate; 8-Hydraulic pump; 9-Hydraulic plate support wing; 10-Moving wheel; 11-Filter press plate assembly; 12-Filter press plate; 13-Filter press plate support wing; 14-Liquid guiding hole; 15-Sludge guiding hole; 16-Filter press tank; 17-Sludge pusher plate; 18-Sludge pusher plate through hole; 19-Sludge separating ring; 20-Limiting block; 21-Air passage; 22-Air inlet; 23-Sludge guide plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] A frame-plate filter press with a cake-removing air passage includes a main support 1. At both ends of the main support 1 are a filter press frame 2 and a pressing frame 3, connected by two main beams 4. The filter press frame 2 has four liquid guiding channels 5 and one mud guiding channel 6. The four liquid guiding channels 5 are located at the four corners of the filter press frame 2, and the mud guiding channel 6 is located at the center of the filter press frame 2. A hydraulic plate 7 is provided at the pressing frame 3, and a hydraulic pump 8 is connected to the hydraulic plate 7. Hydraulic plate support wings 9 are provided on both sides of the hydraulic plate 7, and moving wheels 10 are provided below the hydraulic plate support wings 9. The hydraulic plate 7 moves on the main beams 4 via the moving wheels 10.

[0028] Several filter press plate assemblies 11, including filter press plates 12, are mounted on two main beams 4. Filter press plate support wings 13 are provided on both sides of the filter press plate 12, and casters 10 are located below the support wings 13. The filter press plates 12 can move on the main beams 4 via the casters 10. Liquid guide holes 14 are provided at the four corners of the filter press plates 12, and mud guide holes 15 are provided at the center of the filter press plates 12. When the hydraulic plate 7, filter press plates 12, and filter press frame 12 are stacked tightly under the push of the hydraulic pump 8, the four liquid guide holes 14 correspond one-to-one with the four liquid guide channels 5, and the liquid guide holes 14 and liquid guide channels 5 are connected to form channels; similarly, several mud guide holes 15 and mud guide channels 6 are connected to the channels.

[0029] Filter press grooves 16 are provided on both sides of the filter press plate 12, and a pusher plate 17 is hinged to the lower edge of the filter press groove 16. A pusher plate through hole 18 is provided in the center of the pusher plate 17, and a mud-separating ring 19 is provided at the pusher plate through hole 18. The mud-separating ring 19 is made of rubber and has certain deformation properties. When the pusher plate 17 is in contact with the filter press groove 16, the mud-separating ring 19 is just embedded in the inner wall of the mud guide hole 15, and the outer wall of the mud-separating ring 19 is in close contact with the inner wall of the mud guide channel 6. The design of the mud-separating ring 19 effectively prevents a large amount of mud from entering the gap between the pusher plate 17 and the filter press groove 16, while ensuring that the impact of air leakage is minimized when gas is pumped between the two. A limiting block 20 is provided at the hinge of the pusher plate 17 and the filter press groove 16. The limiting block 20 is used to limit the maximum opening angle between the pusher plate 17 and the filter press groove 16. The design of this limiting block 20 is existing technology and is widely used in various industries. An air passage 21 is provided inside the filter press plate 12, and four air ports 22 are provided at the bottom of the filter press tank 16, all of which are connected to the air passage 21. One end of the air passage 21 opens to the top of the filter press plate 12.

[0030] After completing the filtration operation using this device, the operator separates the individual filter press plate assemblies 11, ensuring a certain distance between adjacent plates. Further, the operator pumps air between the pusher plate 17 and the filter press tank 16 through the air passage 21. A sudden increase in instantaneous air pressure within the air passage 21 ejects the pusher plate 17 from the filter press tank 16, causing it to tilt. The filter cake adhering to the surface of the pusher plate 17 detaches from its surface due to inertia and gravity. An A-shaped guide plate 23 is located at the lower part of the main support 1, guiding the filter mud to both sides of the main support 1.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frame-plate filter press with a cake removal air passage, characterized in that: The system includes a main support frame, with a filter press frame and a clamping frame at each end. Several main beams are provided between the filter press frame and the clamping frame. Several filter press plate assemblies are provided between the filter press frame and the clamping frame, and the filter press plate assemblies are mounted on the main beams. The filter press frame is provided with four liquid guiding channels and one mud guiding channel. The clamping frame is provided with a hydraulic plate, and the hydraulic plate is provided with a hydraulic pump. The filter press assembly includes a filter press plate, with liquid guiding holes at all four corners and a mud guiding hole at the center. Filter press grooves are provided on both sides of the filter press plate, and mud pushing plates are hinged to the filter press grooves. An air passage is provided inside the filter press plate, and several air ports are provided at the bottom of the filter press grooves. These air ports are connected to the air passages, and one end of the air passage opens to the top of the filter press plate.

2. A frame-plate filter press with a cake-removing air passage according to claim 1, characterized in that: The pusher plate is embedded in the filter press trough, and the lower edge of the pusher plate is hinged to the lower edge of the filter press trough. A limiting block is provided at the hinge point between the pusher plate and the filter press trough, and the limiting block limits the maximum opening angle between the pusher plate and the filter press trough.

3. A frame-plate filter press with a cake-removing air passage according to claim 1, characterized in that: The pusher plate has a pusher plate through hole at its center, and a mud-separating ring is provided at the pusher plate through hole.

4. A frame-plate filter press with a cake-removing air passage according to claim 1, characterized in that: The filter press plate is provided with filter press plate support wings on both sides, and a moving wheel is provided below the filter press plate support wings; the filter press plate moves on the main beam by means of the moving wheel.

5. A frame-plate filter press with a cake-removing air passage according to claim 1, characterized in that: The hydraulic plate is provided with hydraulic plate support wings on both sides, and a moving wheel is provided below the hydraulic plate support wings; the hydraulic plate moves on the main beam by means of the moving wheel.

6. A frame-plate filter press with a cake-removing air passage according to claim 1, characterized in that: The lower part of the main support is provided with a mud guide plate, which is A-shaped.

7. A frame-plate filter press with a cake-removing air passage according to claim 3, characterized in that: When the mud-pushing plate is pressed against the bottom of the filter press tank, the mud-separating ring is embedded in the mud-guiding hole, and the outer wall of the mud-separating ring is pressed against the inner wall of the mud-guiding hole.

8. A frame-plate filter press with a cake-removing air passage according to claim 1, characterized in that: The four liquid guiding channels are arranged in a rectangular array at the four corners of the filter press frame, and the mud guiding channel is located at the center of the filter press frame.

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