Stacked screw filter press convenient to clean

By introducing automated brush and scraper assemblies into the screw filter press, the problems of tedious and incomplete manual cleaning in the existing technology have been solved, achieving efficient automatic cleaning of the filter screen and the inside of the equipment, reducing maintenance costs and labor intensity.

CN223892615UActive Publication Date: 2026-02-10SHANDONG CHUNHONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520091494.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2026-02-10
Estimated Expiration
2035-01-15

AI Technical Summary

Technical Problem

The existing screw filter press relies on manual operation for cleaning the filter screen or equipment, which is tedious and prone to omissions. The accumulation of impurities inside the equipment is difficult to clean, which may lead to equipment damage and increase maintenance costs and labor intensity.

Method used

An easy-to-clean screw filter press was designed, which adopts an automated brush and scraper assembly, driven by hydraulic rods and push rods, to achieve automatic cleaning of the filter screen and the inside of the equipment, combined with automatic water spray to ensure thorough cleaning.

Benefits of technology

It reduces filter clogging, lowers equipment cleaning frequency, reduces maintenance costs, improves cleaning efficiency, and avoids omissions and equipment damage caused by manual cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of stacked screw filter presses, and discloses a stacked screw filter press convenient to clean, which comprises a bottom plate, the left side of the upper part of the bottom plate is fixedly connected with a connecting assembly, the connecting assembly is used for dewatering sludge, and the left side of the front part of the connecting assembly is fixedly connected with a drainage pipe. A filter screen is fixedly connected to the front side of the interior of the drainage pipe, a leakage groove is formed in the lower side of the drainage pipe, a waste box is fixedly connected to the lower side of the drainage pipe, a collecting box is slidably connected to the interior of the waste box, first push rods are fixedly connected to the two sides of the waste box, and supporting blocks are fixedly connected to the output ends of the first push rods. According to the device, the filter screen can be conveniently cleaned, the blockage problem caused by sludge attachment or deposition is reduced, the cleaning frequency of the device is reduced, water can be automatically sprayed into the device, thorough cleaning is ensured, and manual omission is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of screw filter press technology, and in particular to a screw filter press that is easy to clean. Background Technology

[0002] A screw press filter is a solid-liquid separation device commonly used in wastewater and sewage treatment. Its main function is to squeeze water out of sludge through screw compression and high pressure, obtaining dewatered sludge. Because wastewater often contains a large amount of impurities, such as sand, fibers, and grease, these can easily cause clogging of the filter screen or the equipment itself, thus affecting the equipment's efficiency and sludge dewatering effect. Therefore, in actual use, screw press filter presses require regular cleaning of the filter screen and the internal components to remove impurities.

[0003] In existing technologies, most screw filter presses rely on manual operation for cleaning the filter screen or the equipment itself. This cleaning process is tedious, prone to omissions, and requires frequent cleaning, increasing maintenance costs and labor intensity. Furthermore, due to the complex internal environment, impurities often accumulate inside the filter screen, making manual cleaning difficult and potentially damaging to the equipment. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a screw filter press that is easy to clean, aiming to improve the existing technology where cleaning the filter screen or equipment relies on manual operation, the cleaning work is cumbersome and easy to miss, and due to the complex internal environment of the equipment, impurities often accumulate in the filter screen, making manual cleaning difficult and even potentially causing equipment damage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a screw filter press that is easy to clean, comprising a base plate, a connecting assembly fixedly connected to the upper left side of the base plate, the connecting assembly being used for sludge dewatering, a drain pipe fixedly connected to the front left side of the connecting assembly, a filter screen fixedly connected to the front side inside the drain pipe, a trough formed on the lower side of the drain pipe, a waste bin fixedly connected to the lower side of the drain pipe, a collection box slidably connected inside the waste bin, first push rods fixedly connected to both sides of the waste bin, a support block fixedly connected to the output end of the first push rods, a collection box fixedly connected to the adjacent side of the support block, a support plate fixedly connected to the upper side inside the drain pipe, second push rods fixedly connected to both sides of the upper part of the support plate, a bearing plate fixedly connected to the output end of the second push rods, springs fixedly connected to both sides of the interior of the bearing plate, a bearing frame fixedly connected to the opposite end of the springs, and a brush fixedly connected to the front side of the bearing frame.

[0006] As a further description of the above technical solution:

[0007] The connecting assembly includes a support frame, which is fixedly connected to the upper left side of the base plate. A mixing tank is fixedly connected to the upper side of the support frame. A feed inlet is fixedly connected to the left side of the mixing tank. A conveying pipe is fixedly connected to the right side of the mixing tank. A filter press is fixedly connected to the right end of the conveying pipe. A motor is fixedly connected to the right side of the filter press. A screw rod is fixedly connected to the output end of the motor. A discharge pipe is fixedly connected to the front right side of the filter press.

[0008] As a further description of the above technical solution:

[0009] The mixing tank is fixedly connected to both sides of its lower part with a scrubbing assembly for cleaning the mixing tank. A water storage tank is fixedly connected to the upper rear side of the bottom plate. A water outlet pipe is fixedly connected to the left side of the water storage tank, and a water injection pipe is fixedly connected to the right side of the water storage tank. A water pump is fixedly connected to the left end of the water outlet pipe. A water delivery pipe is fixedly connected to the output end of the water pump. A collection box is fixedly connected to the front end of the water delivery pipe. The collection box is fixedly connected to the upper side of the inside of the mixing tank.

[0010] As a further description of the above technical solution:

[0011] The scrubbing assembly includes a hydraulic rod, which is fixedly connected to both sides of the lower part of the mixing tank. The output end of the hydraulic rod is fixedly connected to a fixing frame. Scrapers are fixedly connected to both sides of the outer side of the fixing frame, and a scrubbing ring is fixedly connected to the outer side of the fixing frame.

[0012] As a further description of the above technical solution:

[0013] Both the scraper and the scrubbing ring are slidably connected inside the mixing tank.

[0014] As a further description of the above technical solution:

[0015] The waste bin has sliding grooves on both sides, and a support block is slidably connected inside the sliding groove.

[0016] As a further description of the above technical solution:

[0017] The two brushes are slidably connected to the rear side of the filter.

[0018] As a further description of the above technical solution:

[0019] The filter press and the water pump are both fixedly connected to the upper part of the base plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by activating the second push rod, the support plate, support frame, and brush are moved, causing the brush to slide behind the filter screen. When the brush touches the inner wall of the drain pipe, it is squeezed, which in turn causes the support frame to slide inside the support plate and squeeze the spring, cleaning the impurities adhering to the inside of the filter screen. The impurities fall from the trough into the collection box. Then, the first push rod is activated to move the support block and the collection box, which facilitates the cleaning of the filter screen, reduces clogging caused by sludge adhesion or deposition, and lowers the frequency of equipment cleaning.

[0022] 2. In this utility model, the hydraulic rod is activated to move the fixed frame, scraper and scrubbing ring, so that the scraper and scrubbing ring slide on the inner wall of the mixing tank. At the same time, the water pump is activated to drive the water outlet pipe to draw water from the storage tank. The water flows from the inside of the water outlet pipe into the water delivery pipe and the inside of the collection tank, and then sprays out from the inside of the collection tank into the mixing tank. This realizes the automatic spraying of water into the equipment, ensuring thorough cleaning and avoiding human error. Attached Figure Description

[0023] Figure 1 A perspective view of a screw filter press that is easy to clean, as proposed in this utility model;

[0024] Figure 2 This is a rear view of a screw filter press that is easy to clean, as proposed in this utility model.

[0025] Figure 3 This is a cross-sectional view of the mixing tank of a screw filter press that is easy to clean, as proposed in this utility model.

[0026] Figure 4 A cross-sectional view of the drain pipe of a screw filter press that is easy to clean, as proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the cleaning component structure of a screw filter press that is easy to clean, as proposed in this utility model.

[0028] Legend:

[0029] 1. Base plate; 2. Support frame; 3. Mixing tank; 4. Feed inlet; 5. Conveying pipe; 6. Filter press box; 7. Motor; 8. Screw rod; 9. Discharge pipe; 10. Drain pipe; 11. Filter screen; 12. Sluice box; 13. Waste bin; 14. Collection box; 15. First push rod; 16. Support block; 17. Slide groove; 18. Support plate; 19. Second push rod; 20. Bearing plate; 21. Spring; 22. Bearing frame; 23. Brush; 24. Hydraulic rod; 25. Fixing frame; 26. Scraper; 27. Brush ring; 28. Water storage tank; 29. ​​Water outlet pipe; 30. Water pump; 31. Water supply pipe; 32. Centralized tank; 33. Water injection pipe. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 - Figure 5 This utility model provides an embodiment of a screw filter press that is easy to clean, comprising a base plate 1, a connecting assembly fixedly connected to the upper left side of the base plate 1 for dewatering sludge, a drain pipe 10 fixedly connected to the front left side of the connecting assembly, a filter screen 11 fixedly connected to the front side inside the drain pipe 10, a trough 12 formed on the lower side of the drain pipe 10, a waste bin 13 fixedly connected to the lower side of the drain pipe 10, a collection box 14 slidably connected inside the waste bin 13, first push rods 15 fixedly connected to both sides of the waste bin 13, a support block 16 fixedly connected to the output end of the first push rod 15, a collection box 14 fixedly connected to the adjacent side of the support block 16, and a support plate 18 fixedly connected to the upper side inside the drain pipe 10. The upper two sides are fixedly connected to a second push rod 19. The output end of the second push rod 19 is fixedly connected to a bearing plate 20. The inner two sides of the bearing plate 20 are fixedly connected to springs 21. The opposite end of the springs 21 is fixedly connected to a bearing frame 22. The front side of the bearing frame 22 is fixedly connected to a brush 23. The connecting assembly includes a support frame 2. The support frame 2 is fixedly connected to the upper left side of the base plate 1. The upper side of the support frame 2 is fixedly connected to a mixing tank 3. The left side of the mixing tank 3 is fixedly connected to a feed inlet 4. The right side of the mixing tank 3 is fixedly connected to a conveying pipe 5. The right end of the conveying pipe 5 is fixedly connected to a filter press 6. The right side of the filter press 6 is fixedly connected to a motor 7. The output end of the motor 7 is fixedly connected to a screw rod 8. The front right side of the filter press 6 is fixedly connected to a discharge pipe 9.

[0032] By injecting sludge into the inlet 4, mixing tank 3, conveying pipe 5, and filter press 6, and starting the motor 7 to drive the screw rod 8 to rotate, the cement is separated. The sludge is discharged from the discharge pipe 9, and the water flows out from the drain pipe 10. The filter screen 11 filters the water. By starting the second push rod 19, the support plate 20, support frame 22, and brush 23 are moved, causing the brush 23 to slide behind the filter screen 11. When the brush 23 touches the inner wall of the drain pipe 10, it is squeezed. The movement of the brush 23 causes the support frame 22 to slide inside the support plate 20, which in turn squeezes the spring 21, cleaning the impurities adhering to the inside of the filter screen 11. The impurities fall from the trough 12 into the collection box 14. Then, starting the first push rod 15 moves the support block 16 and the collection box 14, which facilitates the cleaning of the filter screen 11.

[0033] Reference Figure 2 , Figure 3 The mixing tank 3 has brushing components fixedly connected to both sides of its lower part. The brushing components are used to clean the mixing tank 3. The bottom plate 1 has a water storage tank 28 fixedly connected to its upper rear side. The water storage tank 28 has an outlet pipe 29 fixedly connected to its left side and an injection pipe 33 fixedly connected to its right side. The water outlet pipe 29 has a water pump 30 fixedly connected to its left end. The water pump 30 has a water delivery pipe 31 fixedly connected to its output end. The water delivery pipe 31 has a central collection box 32 fixedly connected to its front end. The central collection box 32 is fixedly connected to the upper side of the inside of the mixing tank 3. The brushing components include a hydraulic rod 24. The hydraulic rod 24 is fixedly connected to both sides of the lower part of the mixing tank 3. The output end of the hydraulic rod 24 is fixedly connected to a fixing frame 25. The fixing frame 25 has scrapers 26 fixedly connected to both sides of its outer side and a brushing ring 27 fixedly connected to its outer side.

[0034] By activating the hydraulic rod 24, the fixed frame 25, scraper 26, and brush ring 27 are moved, causing the scraper 26 and brush ring 27 to slide on the inner wall of the mixing tank 3. At the same time, the water pump 30 is activated to drive the water outlet pipe 29 to draw water from the water storage tank 28. The water flows from the inside of the water outlet pipe 29 into the water delivery pipe 31 and the collection tank 32, and then sprays out from the inside of the collection tank 32 into the mixing tank 3, thus automatically spraying water into the equipment.

[0035] Reference Figure 1 , Figure 3 , Figure 4 The scraper 26 and the scrubbing ring 27 are slidably connected inside the mixing tank 3; the waste bin 13 has grooves 17 on both sides, and the support block 16 is slidably connected inside the grooves 17; the two brushes 23 are slidably connected to the rear side of the filter screen 11; the filter press 6 and the water pump 30 are fixedly connected to the upper part of the base plate 1.

[0036] The scraper 26 and the brush ring 27 are slidably connected inside the mixing tank 3, facilitating the cleaning of the inner wall of the mixing tank 3. Slide grooves 17 are provided on both sides of the waste bin 13, with support blocks 16 slidably connected inside the slide grooves 17, providing support and limiting the position of the support blocks 16. Two brushes 23 are slidably connected to the rear side of the filter screen 11, cleaning the filter screen 11. The filter press 6 and the water pump 30 are fixedly connected to the upper part of the base plate 1, providing fixed support for the filter press 6 and the water pump 30.

[0037] Working principle: When using this device, sludge is injected into the inlet 4, and then enters the mixing tank 3, the conveying pipe 5, and the filter press 6. Starting the motor 7 drives the screw 8 to rotate, thus separating the cement. The sludge is discharged from the discharge pipe 9, and the water is discharged from the drain pipe 10. The filter screen 11 filters the water. Starting the second push rod 19... The movement of the support plate 20 causes the support frame 22 to move, which in turn moves the brush 23, causing it to slide behind the filter screen 11. When the brush 23 touches the inner wall of the drain pipe 10, it is squeezed. The movement of the brush 23 causes the support frame 22 to move, sliding inside the support plate 20 and squeezing the spring 21, thus cleaning the impurities adhering to the inside of the filter screen 11. The impurities then drain out through the trough 12. The filter screen 11 falls into the collection box 14. Then, the first push rod 15 is activated, moving the support block 16 and causing it to slide within the groove 17. This movement of the support block 16 moves the collection box 14, facilitating cleaning of the filter screen 11 and reducing clogging caused by sludge adhesion or deposition, thus lowering the frequency of equipment cleaning. Activating the hydraulic rod 24 moves the fixed frame 25, which in turn moves the scraper 26 and the brush ring. 27 is moved so that the scraper 26 and the scrubbing ring 27 slide on the inner wall of the mixing tank 3. At the same time, the water pump 30 is started. The water pump 30 drives the water outlet pipe 29 to draw water. The water outlet pipe 29 draws water from the water storage tank 28. The water flows from the inside of the water outlet pipe 29 through the water pump 30 into the inside of the water delivery pipe 31, from the inside of the water delivery pipe 31 into the inside of the collection box 32, and then sprays out from the inside of the collection box 32 into the inside of the mixing tank 3. This realizes the automatic spraying of water into the inside of the equipment, ensuring thorough cleaning and avoiding human error.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw filter press that is easy to clean, comprising a base plate (1), characterized in that: A connecting assembly is fixedly connected to the upper left side of the base plate (1). The connecting assembly is used for sludge dewatering. A drain pipe (10) is fixedly connected to the front left side of the connecting assembly. A filter screen (11) is fixedly connected to the front side of the inside of the drain pipe (10). A trough (12) is opened on the lower side of the drain pipe (10). A waste bin (13) is fixedly connected to the lower side of the drain pipe (10). A collection box (14) is slidably connected inside the waste bin (13). First push rods (15) are fixedly connected to both sides of the waste bin (13). The output end of the first push rod (15) is fixedly connected to the bottom left side of the base plate (1). A support block (16) is fixedly connected to the support block (16), and a collection box (14) is fixedly connected to the side of the support block (16) that is close to it. A support plate (18) is fixedly connected to the upper side of the inside of the drain pipe (10). A second push rod (19) is fixedly connected to both sides of the upper part of the support plate (18). A bearing plate (20) is fixedly connected to the output end of the second push rod (19). A spring (21) is fixedly connected to both sides of the inside of the bearing plate (20). A bearing frame (22) is fixedly connected to the side of the spring (21) that is far away from it. A brush (23) is fixedly connected to the front side of the bearing frame (22).

2. The easy-to-clean screw filter press according to claim 1, characterized in that: The connecting assembly includes a support frame (2), which is fixedly connected to the upper left side of the base plate (1). A mixing tank (3) is fixedly connected to the upper side of the support frame (2). A feed inlet (4) is fixedly connected to the left side of the mixing tank (3). A conveying pipe (5) is fixedly connected to the right side of the mixing tank (3). A filter press (6) is fixedly connected to the right end of the conveying pipe (5). A motor (7) is fixedly connected to the right side of the filter press (6). A screw rod (8) is fixedly connected to the output end of the motor (7). A discharge pipe (9) is fixedly connected to the front right side of the filter press (6).

3. The easy-to-clean screw filter press according to claim 2, characterized in that: The mixing tank (3) is fixedly connected to both sides of its lower part with a scrubbing assembly for cleaning the mixing tank (3). A water storage tank (28) is fixedly connected to the upper rear side of the bottom plate (1). A water outlet pipe (29) is fixedly connected to the left side of the water storage tank (28). A water injection pipe (33) is fixedly connected to the right side of the water storage tank (28). A water pump (30) is fixedly connected to the left end of the water outlet pipe (29). A water delivery pipe (31) is fixedly connected to the output end of the water pump (30). A central collection box (32) is fixedly connected to the front end of the water delivery pipe (31). The central collection box (32) is fixedly connected to the upper side inside the mixing tank (3).

4. The easy-to-clean screw filter press according to claim 3, characterized in that: The scrubbing assembly includes a hydraulic rod (24), which is fixedly connected to the lower two sides of the mixing tank (3). The output end of the hydraulic rod (24) is fixedly connected to a fixing frame (25). Scrapers (26) are fixedly connected to both sides of the outside of the fixing frame (25). A scrubbing ring (27) is fixedly connected to the outside of the fixing frame (25).

5. A screw filter press for easy cleaning according to claim 4, characterized in that: The scraper (26) and the scrubbing ring (27) are both slidably connected inside the mixing tank (3).

6. A screw filter press for easy cleaning according to claim 1, characterized in that: The waste bin (13) has slid grooves (17) on both sides, and a support block (16) is slidably connected inside the slid groove (17).

7. A screw filter press for easy cleaning according to claim 1, characterized in that: The two brushes (23) are slidably connected to the rear side of the filter (11).

8. A screw filter press for easy cleaning according to claim 2, characterized in that: The filter press (6) and the water pump (30) are both fixedly connected to the upper part of the base plate (1).