High pressure diaphragm filter apparatus
By designing the support frame and filter plate structure, the problem of the adverse forces between the air bladder and water affecting the effluent quality was solved, achieving efficient drainage and cake discharge, and improving the overall performance of the filter press equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PINGYANG COUNTY HUANYUAN SLUDGE DISPOSAL CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-24
AI Technical Summary
In existing filter press equipment, there is a reversible force between the air bladder and the water, which affects the water output and the squeezing force effect.
The system adopts a support frame and filter plate structure design, including components such as side uprights, filter cloth, air bladders and electric push rods, forming independent water outlet gaps and drainage channels. It uses a motor to flip the water inlet for drainage, and combines gas injection into the air bladder for compression filtration.
It achieves smoother drainage and eliminates backflow, improving water output and extrusion efficiency, and simplifying the cake discharge process.
Smart Images

Figure CN224541073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter press technology, specifically a high-pressure diaphragm filter press device. Background Technology
[0002] A filter press is a commonly used solid-liquid separation device in industrial production. When in use, a solid-liquid suspension is added to a filter cloth, and then the filter cloth is squeezed to cause the liquid in the solid-liquid suspension to seep out, leaving the filter cake formed by the solid residue in the filter cloth, thereby achieving efficient solid-liquid separation. The filter cake or filtrate can then be further processed as needed.
[0003] The filter plates used in current filter press equipment consist of a frame with an air bladder in the middle and filter cloth with concave structures on both sides. When the filter press is in operation, the air bladder inflates and squeezes the filter cloth, while the squeezed water also has to pass through the filter cloth and contact the air bladder. There is an opposing force between the air bladder and the water, which will affect the water output and the squeezing force effect. Utility Model Content
[0004] The purpose of this invention is to provide a high-pressure diaphragm filter press to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-pressure diaphragm filter press includes: The supporting frame includes two side panels. The material discharge structure includes a conveyor belt, which is fixedly installed between the lower edges of two sets of side uprights; The filter plate structure includes a first frame and a second frame. The inner surface of the first frame is fixedly connected to the side surface of the airbag. A first filter cloth is fixedly installed on the front and rear opening edges of the first frame. A second filter cloth is fixedly installed inside the second frame.
[0006] Furthermore, a limiting plate is fixedly installed on the upper edges of the front and rear sides between the two sets of side panels, and an electric slide rail is fixedly installed on the front and rear sides between the two sets of side panels. A slider is slidably installed on the side surface of the electric slide rail, and a spring buckle is embedded on the upper surface of the slider.
[0007] Furthermore, a water inlet is fixedly installed on one side of the side plate, and sliding rods are fixedly installed on both sides between the two sets of side plates. A first electric actuator is fixedly installed on the edge of one side plate, and the output end of the first electric actuator is slidably connected to one end of the sliding rod. A second electric actuator is fixedly installed in the middle of one side plate, and a plug is fixedly installed on the output end of the second electric actuator.
[0008] Furthermore, the conveyor belt is fixedly installed with two limit plates on both sides, and a cake discharge outlet is opened through one side plate. A water receiving channel is rotatably installed between the two sets of side plates. A motor is fixedly installed on one side plate. The motor is fixedly connected to one end of the water receiving channel, and the other end of the water receiving channel is fixedly connected to a water outlet.
[0009] Furthermore, the first frame and the upper middle part of the airbag are provided with gas inlets and outlets, and gas interfaces are installed inside the gas inlets and outlets. A water outlet is fixedly installed on one side edge of the bottom of the second frame.
[0010] Furthermore, a No. 1 cylinder opening is fixedly installed in the middle of the airbag and the No. 1 filter cloth. Both ends of the No. 1 cylinder opening are fixedly connected to the inner wall of the No. 1 frame through a bracket. A No. 2 cylinder opening is fixedly installed in the middle of the No. 2 filter cloth. One end of the No. 2 cylinder opening is connected to the inner wall of the No. 2 frame through a bracket. Force seats are fixedly installed in the middle of both sides of the No. 1 frame and the No. 2 frame.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The discharge structure and filter plate structure are supported by a support frame. One No. 1 frame and two No. 2 frames on both sides form a filter press unit. Multiple filter press units form a complete filter press structure. Two adjacent No. 2 frames are closely attached to each other to form a relatively independent water outlet gap. Compared with the traditional filter press structure, there is an additional water seepage channel without reverse pressure, which makes drainage smoother and prevents backflow.
[0012] 2. During the filter press process, the water generated will fall into the water receiving channel and move to the outlet for drainage. After drainage, the motor will rotate the water receiving channel to make the arc surface of the channel face upward for cake discharge. The cake will fall directly onto the surface of the conveyor belt and be discharged from the cake discharge outlet. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support frame in this utility model; Figure 3 This is a schematic diagram of the material discharge structure in this utility model; Figure 4 This is a schematic diagram of the filter plate structure in this utility model.
[0014] In the diagram: 1. Support frame; 101. Side plate; 102. No. 1 limiting plate; 103. Electric slide rail; 104. Slider; 105. Spring buckle; 106. Water inlet; 107. Slide rod; 108. No. 1 electric push rod; 109. No. 2 electric push rod; 110. Plug; 2. Discharge structure; 201. No. 2 limiting plate; 202. Conveyor belt; 203. Cake discharge outlet; 204. Water inlet channel; 205. Motor; 206. Water outlet; 3. Filter plate structure; 301. No. 1 frame; 302. Airbag; 303. Gas inlet / outlet; 304. Gas interface; 305. No. 1 filter cloth; 306. No. 2 frame; 307. No. 2 filter cloth; 308. No. 1 cylinder opening; 309. No. 2 cylinder opening; 310. Water outlet; 311. Force seat. Detailed Implementation
[0015] 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.
[0016] Please see Figure 1-4 In this embodiment of the present invention, a high-pressure diaphragm filter press includes a support frame 1, a discharge structure 2, and a filter plate structure 3. The support frame 1 includes two side uprights 101. The discharge structure 2 includes a conveyor belt 202, which is fixedly installed between the lower edges of the two sets of side uprights 101. The filter plate structure 3 includes a first frame 301 and a second frame 306. The inner surface of the first frame 301 is fixedly connected to the side surface of the air bladder 302. A first filter cloth 305 is fixedly installed on the front and rear opening edges of the first frame 301. A second filter cloth 307 is fixedly installed inside the second frame 306.
[0017] Specifically, the discharge structure 2 and filter plate structure 3 are supported by the support frame 1. One No. 1 frame 301 and two No. 2 frames 306 on both sides form a filter press unit. Multiple filter press units form a complete filter press structure. Two adjacent No. 2 frames 306 are closely attached to each other to form a relatively independent water outlet gap. Compared with the traditional filter press structure, there is an additional water seepage channel without reverse pressure, which makes drainage smoother and prevents backflow.
[0018] Example 1 like Figure 1 , 2As shown in Figure 4, in this embodiment, a first limiting plate 102 is fixedly installed on the upper edges of the front and rear sides between the two sets of side plates 101. An electric slide rail 103 is fixedly installed on the front and rear sides between the two sets of side plates 101. A slider 104 is slidably installed on the side surface of the electric slide rail 103. A spring buckle 105 is embedded on the upper surface of the slider 104. A water inlet 106 is fixedly installed on one side plate 101. A slide rod 107 is fixedly installed on both sides between the two sets of side plates 101. A first electric push rod 108 is fixedly installed on the edge of one side plate 101. The output end of the first electric push rod 108 is slidably connected to one end of the slide rod 107. A second electric push rod 109 is fixedly installed in the middle of one side plate 101. A plug 110 is fixedly installed on the output end of the second electric push rod 109.
[0019] In this embodiment, four sliding rods 107 pass through the four corners of each filter press unit to provide sliding support for each filter plate structure 3. The output ends of four first electric push rods 108 are connected to one end of the sliding rods 107 and abut against the four corners of the filter press unit. Then, the second electric push rod 109 presses against the middle position, pressing each filter press unit tightly together. When the cake material is discharged, each electric push rod retracts, releases the restriction, and slides on the electric slide rail 103 through the slider 104. The spring buckle 105 engages the force seat 311, driving each first frame 301 and second frame 306 to move, opening the gaps and performing the cake material discharge operation.
[0020] like Figure 1 , 3 As shown, in this embodiment, two limiting plates 201 are fixedly installed on both sides of the conveyor belt 202, and a cake discharge outlet 203 is inserted through one side upright plate 101. A water receiving channel 204 is rotatably installed between the two sets of side upright plates 101. A motor 205 is fixedly installed on one side upright plate 101. The motor 205 is fixedly connected to one end of the water receiving channel 204, and the other end of the water receiving channel 204 is fixedly connected to a water outlet 206.
[0021] In practice, the water generated during the filter press process falls into the water receiving channel 204 and moves to the water outlet 206 for drainage. After drainage is completed, the motor 205 rotates the water receiving channel 204 so that the arc surface of the water receiving channel 204 is turned upwards for cake discharge. The cake falls directly onto the upper surface of the conveyor belt 202 and is discharged from the cake discharge outlet 203.
[0022] Example 2 Based on Example 1, in order to supplement the specific method of using filter plate structure 3 for pressure filtration that was not mentioned in Example 1.
[0023] like Figure 4As shown, in this embodiment, a gas inlet / outlet 303 is provided in the middle of the upper side of the first frame 301 and the airbag 302. A gas interface 304 is installed inside the gas inlet / outlet 303. A drain outlet 310 is fixedly installed on one side edge of the bottom of the second frame 306. A first cylinder opening 308 is fixedly inserted in the middle of the airbag 302 and the first filter cloth 305. The two ends of the first cylinder opening 308 are fixedly connected to the inner wall of the first frame 301 through a bracket. A second cylinder opening 309 is fixedly inserted in the middle of the second filter cloth 307. One end of the second cylinder opening 309 is connected to the inner wall of the second frame 306 through a bracket. A force seat 311 is fixedly installed in the middle of both sides of the first frame 301 and the second frame 306.
[0024] In practice, during the pressure filtration process, a pressure filtration space is formed by filter cloth 305 and filter cloth 307. The two sets of filter cloth 307 form a water outlet gap. A flow channel for the mixture of flocculent material and water is formed by the openings 308 and 309 of the cylinder. The mixture is introduced into the channel through the inlet 106, and one end of the channel is sealed by the plug 110. Gas is injected into the air bladder 302 through the gas interface 304, which pressurizes and inflates, squeezing the filter cloth 305 on both sides. The cake between filter cloth 305 and filter cloth 307 is squeezed and filtered. The squeezed water directly enters the gap between the two sets of filter cloth 307 and finally drains from the drain outlet 310 into the water receiving channel 204 for drainage.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-pressure diaphragm filter press, characterized in that, include: The supporting frame (1) includes two side panels (101). The discharge structure (2) includes a conveyor belt (202), which is fixedly installed on the lower edge between two sets of side uprights (101); The filter plate structure (3) includes a first frame (301) and a second frame (306). The inner surface of the first frame (301) is fixedly connected to the side surface of the airbag (302). A first filter cloth (305) is fixedly installed on the front and rear opening edges of the first frame (301). A second filter cloth (307) is fixedly installed inside the second frame (306).
2. The high-pressure diaphragm filter press according to claim 1, characterized in that, A limiting plate (102) is fixedly installed on the upper edge of the front and rear sides between the two sets of side plates (101). An electric slide rail (103) is fixedly installed on the front and rear sides between the two sets of side plates (101). A slider (104) is slidably installed on the side surface of the electric slide rail (103). A spring buckle (105) is embedded on the upper surface of the slider (104).
3. The high-pressure diaphragm filter press according to claim 2, characterized in that, A water inlet (106) is fixedly installed on one side of the side plate (101), and a slide rod (107) is fixedly installed on both sides between the two sets of side plates (101). A first electric actuator (108) is fixedly installed on the edge of one side of the side plate (101). The output end of the first electric actuator (108) is slidably connected to one end of the slide rod (107). A second electric actuator (109) is fixedly installed in the middle of one side of the side plate (101). A plug (110) is fixedly installed on the output end of the second electric actuator (109).
4. The high-pressure diaphragm filter press according to claim 3, characterized in that, The conveyor belt (202) is fixedly installed with two limit plates (201) on both sides. The side plate (101) on one side is provided with a cake discharge outlet (203). A water receiving channel (204) is rotatably installed between the two sets of side plates (101). A motor (205) is fixedly installed on one side plate (101). The motor (205) is fixedly connected to one end of the water receiving channel (204). The other end of the water receiving channel (204) is fixedly connected to a water outlet (206).
5. The high-pressure diaphragm filter press according to claim 4, characterized in that, The first frame (301) and the airbag (302) have gas inlet and outlet (303) in the middle of the upper side. The gas inlet and outlet (303) are fitted with gas interface (304). The second frame (306) has a drain outlet (310) fixedly installed on one side edge of the bottom.
6. The high-pressure diaphragm filter press according to claim 5, characterized in that, A first cylinder opening (308) is fixedly inserted into the middle of the airbag (302) and the first filter cloth (305). The two ends of the first cylinder opening (308) are fixedly connected to the inner wall of the first frame (301) through the bracket. A second cylinder opening (309) is fixedly inserted into the middle of the second filter cloth (307). One end of the second cylinder opening (309) is connected to the inner wall of the second frame (306) through the bracket. Force seats (311) are fixedly installed in the middle of both sides of the first frame (301) and the second frame (306).