Sewage separating and intercepting device

By designing a sewage separation and interception device with automatic deblocking and clamping mechanism, the problem of large solid waste blockage is solved, the continuous operation and efficient cleaning of the equipment are achieved, and labor costs and safety risks are reduced.

CN120324976AInactive Publication Date: 2025-07-18QINGYUAN JINDESHENG CONSTR ENG CO LTD
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Patent Information

Application Number
CN202510558954.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2025-07-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing sewage treatment equipment is prone to blocking pipelines and filter plates when dealing with large solid waste, resulting in inefficient cleaning and high cost.

Method used

A sewage separation and interception device is designed, using components such as filter plates, clamps, springs and magnet blocks. The filter plate is automatically unblocked by gravity and magnetic driving, and the clamps are used to clamp large solid waste to reduce manual intervention.

Benefits of technology

The continuous operation of sewage treatment equipment is achieved, cleaning efficiency is improved, labor costs are reduced, safety risks are reduced, and operation convenience is enhanced.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a sewage separating and intercepting device, which relates to the technical field of sewage treatment, and comprises a working box, the top of the working box is provided with a water inlet, the inner side wall of the working box is rotatably connected with a square rod, the side wall of the square rod is provided with a filter plate in a protruding manner, the position of the filter plate close to the square rod is provided with a sealing section, and one side of the working box parallel to the square rod is concavely provided with a rotating groove. A groove opening of the rotating groove is rotationally connected with a triangular block used for supporting the filter plate and limiting rotation of the filter plate, a plurality of first springs are arranged on the side wall of the rotating groove, one ends of the first springs are connected with the side wall of the triangular block, and when the first springs are in a natural state, the triangular block protrudes out of the groove opening of the rotating groove; one side of the triangular block is propped against one side, far away from the square rod, of one filter plate; the filter plate is provided with a clamping piece used for clamping solid waste large in size, and the clamping piece is matched with the filter plate to clamp the solid waste large in size. Large-size solid waste can be effectively intercepted, and the cleaning efficiency is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a sewage separation and interception device. Background Art

[0002] Sewage treatment technology is an important means to maintain water quality and environmental sanitation in modern society. It involves a series of physical, chemical, and biological processes that work together to remove harmful components in sewage, making it meet specific water quality standards for safe discharge or reuse. Sewage treatment has crucial applications in many industries such as construction, agriculture, transportation, energy and petrochemical, environmental protection, urban landscape, medical, and catering. And with the improvement of environmental protection awareness, sewage treatment technology is also increasingly integrated into the daily lives of ordinary people.

[0003] Although significant progress has been made in the development of sewage treatment technology, existing sewage treatment equipment still faces many challenges in actual operation, especially in dealing with large-volume solid wastes such as garbage bags and large leaves. Large-volume solid wastes often clog pipelines and filter plates. Therefore, when sewage enters the sewage treatment equipment, it is necessary to rely on manual fishing to intercept large-volume solid wastes, which not only consumes a large amount of manpower, but also has low cleaning efficiency and high costs. Summary of the Invention

[0004] Aiming at the problem that large-volume solid wastes are likely to clog pipelines and filter plates when using sewage treatment equipment to treat sewage, the present invention provides a sewage separation and interception device that can effectively intercept large-volume solid wastes and improve the cleaning efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions: A sewage separation and interception device includes a working box. An inlet is opened at the top of the working box. A square rod is rotatably connected to the inner side wall of the working box, and both ends of the square rod are rotatably connected to the opposite inner side walls of the working box. Filter plates for filtering large-volume solid wastes in sewage protrude from the side wall of the square rod. The position of the filter plate close to the square rod is set as a sealed section. A rotating groove is recessed on one side of the working box parallel to the square rod. A triangular block for supporting the filter plate and restricting the rotation of the filter plate is rotatably connected to the notch of the rotating groove. A plurality of first springs are provided on the side wall of the rotating groove. One end of each of the plurality of first springs is connected to the side wall of the triangular block. When the first spring is in a natural state, the triangular block protrudes from the notch of the rotating groove, and one side of the triangular block abuts against the side of one of the filter plates away from the square rod. The filter plate is provided with a clamping member for clamping large-volume solid wastes, and the clamping member cooperates with the filter plate to clamp large-volume solid wastes.

[0006] With the above technical solution, sewage is introduced into the working box from the inlet, and the sewage flows to the bottom of the working box through the filter plate. When large-volume solid waste in the sewage blocks the filter plate, sewage will accumulate above the filter plate. As the sewage accumulating on the filter plate gradually increases, the sewage above the filter plate drives the filter plate to rotate towards the bottom of the working box under the action of gravity. The filter plate drives the triangular block to rotate into the rotating groove, and the clamping member clamps the large-volume solid waste placed on the filter plate to ensure that the large-volume solid waste will not fall to the bottom of the working box due to the rotation of the filter plate. When the filter plate moves away from the triangular block, the first spring restores its elasticity to drive the triangular block to protrude from the notch of the rotating groove, and the new filter plate will rotate to abut against one side of the triangular plate, enabling the device to continue working. Finally, the worker can clean the filter plate at intervals to keep the device running continuously. Through the above settings, when large-volume solid waste in the sewage blocks the filter plate, the sewage accumulating above the filter plate drives the filter plate to move downward under the action of gravity, so that the blocked filter plate can rotate automatically, thus realizing automatic blockage removal; at the same time, after the filter plate rotates, the blocked filter plate will leave the working position, and the new filter plate will rotate to the working position to continue working, ensuring the continuous operation of the device; in addition, the large-volume solid waste is clamped by the clamping member to prevent the large-volume waste from falling into the bottom of the working box when the filter plate rotates; moreover, by processing the large-volume solid waste with the device, the situation of manually salvaging the large-volume solid waste is reduced, the cleaning efficiency is improved, and the labor cost is reduced.

[0007] Preferably, the clamping member includes a clamping plate rotatably connected to one side of the filter plate. A plurality of mounting grooves are recessed on one side of the filter plate close to the clamping plate rotatably connected thereto. Second springs for always driving the clamping plate to rotate towards the filter plate rotatably connected thereto are installed at the bottoms of the mounting grooves. The filter plate is provided with a fixing member for fixing the position of the clamping plate. When the fixing member fixes the clamping plate, the clamping plate is close to the filter plate adjacent to its rotatable connection end.

[0008] With the above technical solution, when the filter plate is blocked by large-volume solid waste in the filter holes, the sewage accumulated on the filter plate will drive the filter plate to rotate towards the bottom of the working box, and then drive the fixing member to unlock. The second spring drives the clamping plate and the filter plate to cooperate to clamp the large-volume solid waste. Through the settings of the clamping plate and the second spring, the clamping member can effectively clamp the large-volume solid waste to prevent it from falling to the bottom of the working box with the flow of water.

[0009] Preferably, a notch is provided on one end of the clamping plate along the length direction and on the side away from the square rod. The fixing member includes a fixing ring protruding from one side of the filter plate, and a fixing hook cooperating with the fixing ring is rotatably connected to the notch.

[0010] With the above technical solution, by rotating the fixed hook to cooperate with the fixed ring to fix the position of the filter plate, the clamping plate can be fixed quickly and reliably, preventing unnecessary movement or rotation during the working process, thereby ensuring the filtration efficiency and treatment quality.

[0011] Preferably, an unlocking member for unlocking the fixing member is provided on the inner side wall of the working box. When the filter plate rotates and pushes the triangular plate to move towards the rotation groove, the unlocking member unlocks the fixing member, and the clamping plate cooperates with the filter plate to clamp large solid waste.

[0012] With the above technical solution, by setting the unlocking member, when the filter plate rotates, it can push the triangular plate to move and trigger the unlocking member to automatically unlock the fixing member. This automated process reduces manual intervention and improves the convenience of operation; at the same time, the automatic unlocking mechanism reduces the direct intervention of the operator and lowers the safety risk during the operation process.

[0013] Preferably, the unlocking member includes a cross bar provided at the top of the working box and a magnet block provided on the side wall of the cross bar close to the notch. The fixed hook is made of iron.

[0014] With the above technical solution, when the filter plate rotates, the filter plate drives the clamping plate to approach the magnet block. Through the magnetic attraction of the magnet block on the fixed hook, the fixed hook rotates, and the fixed hook is separated from the fixed ring, thereby unlocking the fixing member. The second spring drives the clamping plate to clamp large solid waste. Through the above settings, a stable magnetic adsorption can be formed between the magnet block and the iron fixed hook. When unlocking is required, the action of the magnetic force can ensure the accuracy and rapidity of the unlocking action; at the same time, using magnetic force as the unlocking means simplifies the complex components and mechanisms that may be involved in traditional mechanical unlocking and reduces the maintenance cost caused by mechanical failures.

[0015] Preferably, a flexible block is fixedly connected to the side wall of the cross bar close to the bottom of the working box, and the side of the flexible block away from the cross bar is fixedly connected to the magnet block.

[0016] With the above technical solution, the setting of the flexible block can make the magnet block closer to the fixed hook, which is beneficial to enhancing the attraction of the magnet block on the fixed hook; at the same time, when the filter plate rotates and collides with the magnet block, the flexible block deforms and bends, enabling the filter plate to rotate normally. The flexible block can not only enhance the attraction of the magnet block on the fixed hook but also does not affect the rotation of the filter plate.

[0017] Preferably, the filter plate is further provided with a reinforcing member for further enhancing the clamping effect of the clamping member. The reinforcing member is a plurality of fixing rods arranged on one side of the clamping plate. The number of the fixing rods is the same as the number of the filter holes of the filter plate, and the plurality of fixing rods are respectively arranged corresponding to the filter holes of the filter plate.

[0018] With the above technical solution, when it is necessary to clamp large-volume solid waste, the fixing member is unlocked, and the second spring drives the clamping plate to cooperate with the filter plate to clamp the large-volume solid waste. The fixing rods are inserted into the filter holes. At the same time, the fixing rods will drive some flexible large-volume solid substances to be partially fixed in the filter holes, so that the clamping member can clamp the large-volume solid substances more stably, and further reduce the situation of the large-volume solid waste falling off during the filtering process.

[0019] Preferably, the fixing rod is a telescopic rod. The fixing rod includes a fixed section and a telescopic section. One end of the fixed section is recessed with a telescopic groove for the telescopic section to expand and contract. A third spring is arranged at the bottom of the telescopic groove. One end of the third spring is connected to one end of the telescopic section. When the third spring is in a natural state, one end of the telescopic section protrudes from the telescopic groove.

[0020] With the above technical solution, through the arrangement of the telescopic rod and the third spring, the telescopic rod can adapt to solid waste of different volumes, so that each fixing rod can act on the solid waste, which is beneficial to reducing the situation that when the fixing rod is rigid, due to the different volumes of the solid waste, the fixing rod can only clamp the large-volume solid waste, and then the small-volume solid waste falls to the bottom of the box.

[0021] Preferably, the filter plate is further provided with a plurality of drain holes.

[0022] With the above technical solution, the arrangement of the drain holes reduces the buoyancy effect of the sewage on the clamping plate, so that the clamping plate can clamp the solid waste more quickly and stably; at the same time, the drain holes help to quickly drain the moisture in the working area, thereby reducing the clamping time, improving the operation speed and the overall treatment efficiency.

[0023] In summary, the present invention has the following beneficial effects: 1. Through the arrangements of the square rod, triangular block, filter plate, first spring, and clamping member, when large-volume solid waste in the sewage blocks the filter plate, the sewage accumulating above the filter plate pushes the filter plate downward under the action of gravity, enabling the blocked filter plate to rotate automatically, thus achieving automatic blockage removal. At the same time, after the filter plate rotates, the blocked filter plate will leave the working position, and a new filter plate will rotate to the working position to continue working, ensuring the continuous operation of the equipment. In addition, the large-volume solid waste is clamped by the clamping member to prevent large-volume waste from falling into the bottom of the working box when the filter plate rotates. Moreover, by processing large-volume solid waste with the equipment, the situation of manually salvaging large-volume solid waste is reduced, the cleaning efficiency is improved, and the labor cost is lowered.

[0024] 2. Through the arrangements of the fixing member and the unlocking member, when the filter plate rotates, it can push the triangular plate to move and trigger the unlocking member to automatically unlock the fixing member. This automated process reduces manual intervention and improves the convenience of operation. At the same time, the automatic unlocking mechanism reduces the direct intervention of operators and lowers the safety risks during the operation process.

[0025] 3. Through the arrangement of the flexible block, it can not only enhance the attraction of the magnet block to the fixed hook but also does not affect the rotation of the filter plate.

[0026] 4. Through the arrangements of the fixed rod, third spring, and drain hole, the clamping member can clamp large-volume solid substances more stably, further reducing the situation of large-volume solid waste falling off during the filtering process. At the same time, it is beneficial for the clamping plate to clamp solid waste more quickly and stably. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of a sewage separation and interception device according to an embodiment of the present invention.

[0028] Figure 2 is Figure 1 the enlarged structural schematic diagram of part A in

[0029] Figure 3 is the internal structural schematic diagram of a sewage separation and interception device according to an embodiment of the present invention.

[0030] Figure 4 is Figure 3 the enlarged structural schematic diagram of part B in

[0031] Figure 5 is Figure 3 the enlarged structural schematic diagram of part C in

[0032] Description of the Reference Numerals: 1. Working box; 11. Water inlet; 12. Drain pipe; 13. Square rod; 14. Rotating groove; 15. Triangular block; 16. First spring; 2. Filter plate; 21. Sealing section; 22. Installation groove; 23. Notch; 3. Clamping member; 31. Clamping plate; 32. Second spring; 33. Drain hole; 4. Fixing member; 41. Fixing ring; 42. Fixed hook; 5. Unlocking member; 51. Cross bar; 52. Flexible block; 53. Magnet block; 6. Reinforcing member; 61. Fixed section; 62. Telescopic section; 63. Third spring. Detailed implementation manner

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] A sewage separation and interception device, see Figure 1 、 Figure 3 and Figure 5, including a working box 1. There is a water inlet 11 at the top of the working box 1, and a drain pipe 12 is connected to the bottom of the working box 1. A square rod 13 is rotatably connected to the inner side wall of the working box 1, and both ends of the square rod 13 are rotatably connected to the opposite inner side walls of the working box 1. In this embodiment, both ends of the square rod 13 are rotatably connected to the side walls at both ends of the working box 1 along the length direction. Filter plates 2 for filtering large-volume solid wastes in the sewage protrude from the four side walls of the square rod 13. The position of the filter plate 2 close to the square rod 13 is set as a sealed section 21. A rotating groove 14 is recessed on one side of the working box 1 parallel to the square rod 13 and close to the water inlet 11. The length of the rotating groove 14 is the same as the width of the working box 1. A triangular block 15 for supporting the filter plate 2 and restricting the rotation of the filter plate 2 is rotatably connected to the notch of the rotating groove 14. A plurality of first springs 16 are installed on the side wall of the rotating groove 14, and the plurality of first springs 16 are evenly distributed on the side wall of the rotating groove 14 close to the water inlet 11. One end of each of the plurality of first springs 16 is fixedly connected to the side wall of the triangular block 15. When the first spring 16 is in the natural state, the triangular block 15 protrudes from the notch of the rotating groove 14, and one side of the triangular block 15 abuts against one side of one of the filter plates 2 far from the square rod 13; the filter plate 2 is provided with a clamping member 3 for clamping large-volume solid wastes. The clamping member 3 cooperates with the filter plate 2 to clamp large-volume solid wastes. When the sewage separation and interception device works, sewage enters the device from the water inlet 11 of the device. The sewage flows through the filter holes of the filter plate 2 to the bottom of the working box 1 and flows to the next process from the drain pipe 12, while the large-volume solid wastes in the sewage are filtered by the filter plate 2 and stay on the filter plate 2. Then, the large-volume solid wastes block the filter holes of the filter plate 2, resulting in a large amount of sewage staying on the filter plate 2. When the sewage accumulates to a certain weight, the sewage uses the action of gravity to push the filter plate 2 to rotate. Then, the clamping member 3 is used to clamp the large-volume solid wastes, so that the large-volume solid wastes will not fall to the bottom of the working box 1 as the filter plate 2 rotates. When the filter plate 2 rotates, it drives the triangular block 15 to rotate, so that the triangular plate rotates into the rotating groove 14. When the filter plate 2 with wastes rotates away from the triangular block 15, the first spring 16 drives the triangular block 15 to protrude from the notch of the rotating groove 14, and the new filter plate 2 abuts against the triangular block 15, thereby realizing the collection of large-volume solid wastes and the replacement of a new filter plate 2, so that the sewage separation and interception device can work continuously.

[0035] See Figure 4, the clamping member 3 includes a clamping plate 31 rotatably connected to one side of the filter plate 2. On the side of the filter plate 2 close to the clamping plate 31 to which it is rotatably connected, a plurality of mounting grooves 22 are recessed. The mounting grooves 22 are evenly distributed on the sealing section 21. The clamping member 3 further includes a second spring 32 installed at the bottom of the mounting groove 22 for always driving the clamping plate 31 to rotate in the direction close to the filter plate 2 to which it is rotatably connected. One end of the second spring 32 away from the bottom of the mounting groove 22 is fixedly connected to one side of the adjacent clamping plate 31. Driven by the elastic force of the second spring 32, the clamping plate 31 and the filter plate 2 to which it is rotatably connected are close to each other and cooperate to clamp and fix large solid impurities.

[0036] See Figure 2 , a notch 23 is provided on one end of the clamping plate 31 along the length direction and on the side away from the square rod 13. The filter plate 2 is provided with a fixing member 4 for fixing the position of the clamping plate 31. When the fixing member 4 fixes the position of the clamping plate 31, the clamping plate 31 is close to the filter plate 2 adjacent to its rotatable connection end. The fixing member 4 includes a fixing ring 41 protruding from one side of the clamping plate 31, and a fixing hook 42 rotatably connected to the notch 23 and cooperating with the fixing ring 41. Through the cooperation and fixation of the fixing hook 42 and the fixing ring 41, the position of the clamping plate 31 is fixed, so that the clamping plate 31 does not affect the filtration of the filter plate 2.

[0037] See Figure 2 , an unlocking member 5 for unlocking the fixing member 4 is provided on the inner side wall of the working box 1. When the filter plate 2 rotates and pushes the triangular plate in the direction of the rotating groove 14, the unlocking member 5 unlocks the fixing member 4, and the second spring 32 drives the clamping plate 31 to rotate. The clamping plate 31 cooperates with the filter plate 2 to clamp large solid waste. The unlocking member 5 includes a cross bar 51 provided on the top of the working box 1, a flexible block 52 fixedly connected to the bottom wall of the cross bar 51 close to the notch 23, and a magnet block 53 fixedly connected to the side of the flexible block 52 away from the cross bar 51. The fixing hook 42 is made of iron. When the filter plate 2 is blocked and rotates, and the filter plate 2 pushes the triangular block 15 to rotate, the fixing hook 42 moves to a position close to the magnet block 53 as the filter plate 2 rotates, and the magnet attracts the fixing hook 42 to rotate, thereby unlocking the fixing member 4.

[0038] Referring to FIGS. 3 and 5, the filter plate 2 is further provided with a reinforcing member 6 for further enhancing the clamping effect of the clamping member 3. The reinforcing member 6 is a plurality of fixing rods fixedly connected to the side of the clamping plate 31 close to the filter plate 2 rotatably connected thereto. The number of the fixing rods is the same as the number of the filter holes of the filter plate 2, and the plurality of fixing rods are respectively arranged corresponding to the filter holes of the filter plate 2. In this embodiment, the fixing rods are telescopic rods. The fixing rod includes a fixed section 61 and a telescopic section 62. A telescopic groove for the telescopic section 62 to stretch is recessed at one end of the fixed section 61 away from the adjacent clamping plate 31. A third spring 63 is arranged at the bottom of the telescopic groove. One end of the third spring 63 is fixedly connected to one end of the telescopic section 62 close to the adjacent fixed section 61. When the third spring 63 is in a natural state, one end of the telescopic section 62 protrudes from the telescopic groove. When the clamping plate 31 cooperates with the filter plate 2 to clamp large solid waste, by inserting the fixing rod into the filter hole of the filter plate 2, a part of the flexible solid waste is fixed in the filter hole, so as to enhance the clamping of the large solid waste.

[0039] The implementation principle of this embodiment is as follows: When it is necessary to use the sewage separation and interception device to treat large solid waste in sewage, first unlock one of the fixing members 4, so that one of the clamping plates 31 cooperates with the filter plate 2 to clamp, thereby opening the filter holes on one of the filter plates 2. Then rotate the filter plate 2 with the opened filter holes until it abuts against the triangular block 15. Then introduce the sewage into the working box 1 from the drain port. The sewage flows through the filter holes on the filter plate 2 to the bottom of the working box 1, and the sewage at the bottom of the working box 1 is discharged from the drain pipe 12 to the next filtration process.

[0040] When the large solid waste blocks the filter holes of the filter plate 2, sewage will accumulate on the filter plate 2. As the sewage continuously accumulates, the sewage drives the filter plate 2 to rotate under the action of gravity, and the filter plate 2 drives the triangular block 15 to rotate towards the direction of the rotating groove 14. At this time, the fixed hook 42 will also rotate accordingly. The fixed hook 42 rotates to a position close to the magnet block 53. The magnet block 53 attracts the fixed hook 42 through the magnetic force, causing the fixed hook 42 to rotate, so as to disengage from the fixed ring 41 and unlock the fixing member 4. The second spring 32 drives the clamping plate 31 towards the filter plate 2 rotatably connected thereto. The clamping plate 31 cooperates with the filter plate 2 to clamp the large solid waste, and the fixing rod is inserted into the filter hole of the filter plate 2 to enhance the clamping force. Then the sewage continues to push the filter plate 2 to rotate, so that the filter plate 2 clamping the solid waste moves away from the triangular block 15. Then the first spring 16 drives the triangular block 15 to protrude from the rotating groove 14. Then the new filter plate 2 rotates until it abuts against the side wall of the triangular block 15. Finally, clean the solid waste on the filter plate 2 at intervals, so that the sewage separation and interception device can work continuously.

[0041] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A sewage separation and interception device, comprising a working box (1), characterized in that: The top of the working box (1) is provided with a water inlet (11). The inner side wall of the working box (1) is rotatably connected with a square rod (13). Both ends of the square rod (13) are rotatably connected with the inner walls of the opposite sides of the working box (1). Filter plates (2) for filtering large-sized solid wastes in the sewage are protruded from the side walls of the square rod (13). The position of the filter plate (2) close to the square rod (13) is set as a sealing section (21). A rotating groove (14) is recessed on one side of the working box (1) parallel to the square rod (13). A triangular block (15) for supporting the filter plate (2) and restricting the rotation of the filter plate (2) is rotatably connected to the notch of the rotating groove (14). A plurality of first springs (16) are arranged on the side wall of the rotating groove (14). One ends of the plurality of first springs (16) are connected to the side wall of the triangular block (15). When the first spring (16) is in a natural state, the triangular block (15) protrudes from the notch of the rotating groove (14), and one side of the triangular block (15) abuts against the side of one of the filter plates (2) far away from the square rod (13). The filter plate (2) is provided with a clamping member (3) for clamping large-sized solid wastes. The clamping member (3) cooperates with the filter plate (2) to clamp large-sized solid wastes.

2. The sewage separation and interception device according to claim 1, wherein: The clamping member (3) includes a clamping plate (31) rotatably connected to one side of the filter plate (2). A plurality of mounting grooves (22) are recessed on one side of the filter plate (2) close to the clamping plate (31) rotatably connected thereto. Second springs (32) for always driving the clamping plate (31) to rotate in a direction close to the filter plate (2) rotatably connected thereto are installed at the bottoms of the mounting grooves (22). The filter plate (2) is provided with a fixing member (4) for fixing the position of the clamping plate (31). When the fixing member (4) fixes the clamping plate (31), the clamping plate (31) is close to the filter plate (2) adjacent to its rotating connection end.

3. The sewage separation and interception device according to claim 2, characterized in that: A notch (23) is provided on one end of the clamping plate (31) along the length direction and on the side far away from the square rod (13). The fixing member (4) includes a fixing ring (41) protruding from one side of the filter plate (2). A fixing hook (42) cooperating with the fixing ring (41) is rotatably connected to the notch (23).

4. A sewage separation and interception device according to claim 3, characterized in that: An unlocking member (5) for unlocking the fixing member (4) is arranged on the inner side wall of the working box (1). When the filter plate (2) rotates and pushes the triangular plate to move towards the rotating groove (14), the unlocking member (5) unlocks the fixing member (4), and the clamping plate (31) cooperates with the filter plate (2) to clamp large-sized solid wastes.

5. The sewage separation and interception device according to claim 4, characterized in that: The unlocking member (5) includes a cross bar (51) arranged on the top of the working box (1) and a magnet block (53) arranged on the side wall of the cross bar (51) close to the notch (23). The fixing hook (42) is made of iron.

6. The sewage separation and interception device according to claim 5, characterized in that: A flexible block (52) is fixedly connected to the side wall of the cross bar (51) close to the bottom of the working box (1), and one side of the flexible block (52) away from the cross bar (51) is fixedly connected to the magnet block (53).

7. A sewage separation and interception device according to any one of claims 2-6, characterized in that: The filter plate (2) is further provided with a reinforcing member (6) for further enhancing the clamping effect of the clamping member (3). The reinforcing member (6) is a plurality of fixing rods arranged on one side of the clamping plate (31). The number of the fixing rods is the same as the number of the filter holes of the filter plate (2), and the plurality of fixing rods are respectively arranged corresponding to the filter holes of the filter plate (2).

8. A sewage separation and interception device according to claim 7, characterized in that: The fixing rod is a telescopic rod. The fixing rod includes a fixed section (61) and a telescopic section (62). A telescopic groove for the telescopic section (62) to stretch is recessed at one end of the fixed section (61). A third spring (63) is arranged at the bottom of the telescopic groove. One end of the third spring (63) is connected to one end of the telescopic section (62). When the third spring (63) is in a natural state, one end of the telescopic section (62) protrudes from the telescopic groove.

9. The sewage separation and interception device according to claim 8, characterized in that: The filter plate (2) is further provided with a plurality of drain holes (33).