Impulse type water quality purification system for river sewage
By utilizing a pulsed water purification system for river wastewater, which employs pulsed water flow and a precise microbial delivery structure, the system solves the problems of limited purification range and low efficiency in river wastewater treatment. It achieves comprehensive purification and impurity interception throughout the river, significantly improving water quality.
Patent Information
- Application Number
- CN202511994046.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-01-27
AI Technical Summary
Existing river wastewater purification technologies have limited natural water flow diffusion capacity and a limited purification range. Furthermore, microorganisms, once introduced, cannot act specifically on areas where pollutants are concentrated, resulting in low purification efficiency.
The river sewage pulse water purification system uses a gate to intercept and store water to form a pulse water flow. Combined with a rectangular trough, placement trough, and an upward inclined surface, it precisely guides the release of microorganisms. The drive plate inside the shell propels the movement of microorganisms, and wedge blocks and sealing doors control the opening of the trough, ensuring that microorganisms preferentially act on the bottom of the river. Combined with a filter plate, it intercepts impurities.
It significantly improves the purification and diffusion effect and efficiency, achieves targeted purification of microorganisms, takes into account the interception of impurities, is easy to operate, and significantly improves the water quality of rivers.
Smart Images
Figure CN121401720A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of river technology, specifically, it relates to a pulse-type water purification system for river sewage. Background Technology
[0002] In the field of river sewage purification, the diffusion capacity of natural water flow is limited. Traditional purification technologies mostly rely on the natural flow of water to mix the purification medium with sewage, resulting in a limited purification range and low diffusion efficiency, making it difficult to effectively purify sewage throughout the entire river area.
[0003] Existing microbial purification technologies lack precise microbial guidance and delivery structures. After being released, microorganisms tend to float randomly with the water flow and cannot act on the pollutant-rich bottom areas of the river, resulting in poor targeted purification effects and insufficient efficiency of microbial action.
[0004] In view of this, the present invention is proposed. Summary of the Invention
[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A pulse-type water purification system for river sewage includes a river body, a gate installed within the river body, and an installation housing located on one side wall of the gate within the inner cavity of the river body. A filter plate is installed at the end of the installation housing away from the gate. A rectangular slot is formed at the top of the installation housing, and a placement slot is formed at the bottom of the installation housing. Two upwardly inclined surfaces are also formed on the rectangular slot. An installation slot is also formed on the opposite side wall of the installation housing. An inner shell is installed within the inner cavity of the installation housing. An inner slot is formed through the inner shell, and a fixing plate is installed in the middle of the inner slot. Two symmetrically arranged drive plates are mounted on the fixing plate.
[0006] In a preferred embodiment of the present invention, mounting frames are respectively provided on both sides of the river body, the two mounting frames are symmetrical to each other, a top plate is provided above the two mounting frames, a jack is provided at the bottom of the top plate, a sliding plate is provided at the bottom of the jack, a slide rail is provided on the opposite side wall of the two mounting frames, the two slide rails are symmetrical to each other, and the slide rails and the sliding plate are slidably connected, and a gate is provided at the bottom of the sliding plate, the gate is used to intercept the river water upstream of the river body.
[0007] In a preferred embodiment of the present invention, connecting rods are provided on both opposite side walls of the outer side of the mounting housing. The two connecting rods are symmetrical to each other. Multiple connecting rods are provided at equal intervals at the ends of the two connecting rods away from the gate. A filter plate is provided at the end of the connecting rod away from the connecting rod. The filter plate is used to intercept impurities in the river body.
[0008] In a preferred embodiment of the present invention, an L-shaped mounting rod is provided on the side wall of the sliding plate near the mounting housing. The end of the L-shaped mounting rod away from the sliding plate is located in the inner cavity of a rectangular slot opened on the mounting housing, and a mounting block is provided at the end. Both ends of the bottom of the mounting block are provided with downward inclined surfaces. The two downward inclined surfaces are symmetrical to each other and are adapted to the upward inclined surfaces respectively. Two feeding slots are provided on the mounting block. The two feeding slots are symmetrical to each other and the feeding slots can move through the downward inclined surfaces opened at the mounting block.
[0009] In a preferred embodiment of the present invention, the inner cavity of the mounting housing is provided with a mounting bearing in the inner cavity of the placement slot, the mounting bearing is provided with a rotating rod, the rotating rod is provided with a stirring rod, and the rotating rod is provided with a push plate.
[0010] In a preferred embodiment of the present invention, the mounting block has an inner housing at its bottom, an annular groove at its bottom, and an irregular groove on the inner wall of the annular groove. A sliding ball is slidably disposed in the inner cavity of the irregular groove, and a drive rod is disposed on the sliding ball. The drive rod movably passes through the mounting housing, and its end is located in the inner cavity of the placement groove. The drive rod is in contact with the push plate in the inner cavity of the placement groove. A movable rod movably passes through the bottom of the inner housing and the fixed plate. A limit plate is disposed at the other end of the movable rod.
[0011] In a preferred embodiment of the present invention, the inner housing has inner guide slots on the two side walls opposite to the inner slots. The two inner guide slots are symmetrical to each other. Two guide sliders are slidably arranged in the inner cavity of each of the two inner guide slots. Each guide slider is symmetrical to each other. A drive plate is provided at one end of each pair of guide sliders opposite to each other. The two drive plates are symmetrical to each other.
[0012] In a preferred embodiment of the present invention, each of the two drive plates is provided with a push plate at one of its opposite ends, the two push plates are symmetrical to each other, each of the two drive plates is provided with a swing arm on one of its opposite sidewalls, the two swing arms are symmetrical to each other, and the other ends of the two swing arms are respectively provided above the limiting plate.
[0013] In a preferred embodiment of the present invention, the mounting housing has two external guide slots at the mounting slot, and each of the external guide slots is symmetrical to the other.
[0014] In a preferred embodiment of the present invention, the mounting housing is further provided with two movable sealing doors at the mounting slot. Each movable sealing door is symmetrical to the other two, and each movable sealing door has a wedge-shaped block on one of its opposite side walls. Each wedge-shaped block is symmetrical to the other two.
[0015] Compared with the prior art, the present invention has the following advantages: This invention uses a gate in the river channel to intercept and store water, creating a pulsed water flow that significantly improves the purification and diffusion effect. The rectangular slot, placement slot, and upper inclined surface of the mounting shell facilitate the placement of microorganisms, which are precisely guided to the installation slot. The fixing plate and drive plate inside the shell can move the microorganisms, and the wedge-shaped block and movable sealing door can controllably open the installation slot, ensuring that the microorganisms preferentially act on the sewage at the bottom of the river for targeted purification. The filter plate is fixed by connecting rods and linking rods, effectively intercepting impurities and preventing the installation slot from clogging. The overall structure has strong adaptability. The combination of pulsed water flow and microbial purification ensures both accurate placement and enhanced purification efficiency. It is easy to operate and can take into account both impurity interception and deep purification, significantly improving the water quality of the river.
[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description
[0017] In the attached diagram: Figure 1 A three-dimensional structural diagram of a pulse-type water purification system for river sewage; Figure 2 A side view schematic diagram of a pulse-type water purification system for river sewage. Figure 3 A schematic diagram of the installation shell structure of a pulse-type water purification system for river sewage. Figure 4 A schematic cross-sectional view of the installation casing of a pulse-type water purification system for river sewage. Figure 5 A pulse-type water purification system for river sewage Figure 4 A magnified schematic diagram of the central part of the structure; Figure 6 A schematic cross-sectional view of the internal shell structure of a pulse-type water purification system for river sewage. Figure 7 An exploded structural diagram of the mounting housing and mounting block of a pulse-type water purification system for river sewage. Figure 8 A schematic diagram of the structure from below for a pulse-type water purification system for river sewage. Figure 9 This is a schematic diagram of the drive rod connection structure of a pulse-type water purification system for river sewage.
[0018] In the picture: 1. River channel body; 11. Mounting frame; 111. Top plate; 12. Jack; 121. Sliding plate; 122. Slide rail; 123. Gate; 2. Housing assembly; 21. Rectangular slot; 211. Upper inclined surface; 212. Placement slot; 213. Installation slot; 22. Connecting rod; 221. Connecting rod; 222. Filter plate; 23. Internal housing; 231. Internal slot; 232. Fixing plate; 24. Bearing assembly; 241. Rotating rod; 242. Pushing plate; 243. Stirring rod; 244. Connecting ring; 25. Wedge block; 251. Movable sealing door; 3. L-shaped mounting rod; 31. Mounting block; 311. Lower inclined surface; 312. Material discharge slot; 32. Drive plate; 321. Inner guide slot; 322. Outer guide slot; 323. Guide slider; 324. Push plate; 34. Moving rod; 341. Limiting plate; 342. Swing arm; 35. Annular slot; 351. Irregular slot; 352. Sliding ball; 353. Drive rod. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.
[0020] Example 1: like Figures 1 to 9As shown, a river sewage pulse-type water purification system includes a river body 1, a gate 123 is installed inside the river body 1, and an installation housing 2 is installed on one side wall of the gate 123 in the inner cavity of the river body 1. A filter plate 222 is installed at the end of the installation housing 2 away from the gate 123. A rectangular slot 21 is opened on the top of the installation housing 2, and a placement slot 212 is opened on the bottom of the installation housing 2. Two upward inclined surfaces 211 are also opened on the rectangular slot 21. An installation slot 213 is also opened on the opposite side wall of the installation housing 2. An inner housing 23 is installed inside the installation housing 2, and an inner slot 231 is opened through the inner housing 23. A fixing plate 232 is installed in the middle of the inner slot 231, and two mutually symmetrical drive plates 32 are installed on the fixing plate 232. The gate 123 of the river body 1 intercepts and stores water to form a pulsed water flow, which greatly improves the purification and diffusion effect. The rectangular slot 21, placement slot 212 and upper inclined surface 211 of the housing 2 facilitate the placement of microorganisms. With the help of 24, the microorganisms are precisely guided to the installation slot 213. The fixing plate 232 and drive plate 32 of the inner housing 23 can push the microorganisms to move. The wedge block 25 and the movable sealing door 251 can controllably open the installation slot 213 to ensure that the microorganisms act on the sewage at the bottom of the river first, achieving targeted purification. The filter plate 222 is fixed by the connecting rod 22 and the connecting rod 221, which effectively intercepts impurities and prevents the installation slot 213 from being blocked. The overall structure has strong adaptability. The combination of pulsed water flow and microbial purification not only ensures the accuracy of placement but also enhances the purification efficiency. It is easy to operate and can take into account both impurity interception and deep purification, which greatly improves the water quality of the river.
[0021] like Figures 1 to 9 As shown in the specific embodiment, mounting frames 11 are respectively provided on both sides of the river body 1. The two mounting frames 11 are symmetrical to each other. A top plate 111 is provided above the two mounting frames 11. A jack 12 is provided at the bottom of the top plate 111. A sliding plate 121 is provided at the bottom of the jack 12. A slide rail 122 is provided on the opposite side wall of the two mounting frames 11. The two slide rails 122 are symmetrical to each other, and the slide rails 122 and the sliding plate 121 are slidably connected. A gate 123 is provided at the bottom of the sliding plate 121. The gate 123 is used to intercept the river water upstream of the river body 1. In this arrangement, it is ensured that the gate 123 can move vertically.
[0022] like Figures 1 to 9 As shown, furthermore, connecting rods 22 are provided on both opposite side walls of the outer side of the mounting housing 2. The two connecting rods 22 are symmetrical to each other. Multiple equidistant connecting rods 221 are provided at the ends of the two connecting rods 22 away from the gate 123. A filter plate 222 is provided at the end of each connecting rod 221 away from the connecting rod 22. The filter plate 222 is used to intercept impurities in the river body 1. In this configuration, the installation position of the filter plate 222 is determined.
[0023] Example 2: The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, a pulse-type water purification system for river sewage includes an L-shaped mounting rod 3 on the side wall of a sliding plate 121 near the mounting housing 2. The end of the L-shaped mounting rod 3 away from the sliding plate 121 is located within a rectangular slot 21 on the mounting housing 2, and a mounting block 31 is mounted at its end. Both ends of the mounting block 31 have downwardly inclined surfaces 311, which are symmetrical and respectively adapted to the upwardly inclined surface 211. The mounting block 31 has two symmetrical discharge slots 312, which movably pass through the downwardly inclined surfaces 311 on the mounting block 31. In this configuration, the installation position of the mounting block 31 is determined.
[0024] like Figures 1 to 9 As shown, in a specific embodiment, a mounting bearing 24 is provided within the inner cavity of the mounting housing 2 and the inner cavity of the placement slot 212. A rotating rod 241 is provided on the mounting bearing 24, a stirring rod 243 is provided on the rotating rod 241, and a push plate 242 is provided on the rotating rod 241. In this configuration, ...
[0025] like Figures 1 to 9 As shown, further, the bottom of the mounting block 31 is provided with an inner shell 23, the bottom of the inner shell 23 has an annular groove 35, the inner wall of the annular groove 35 has an irregular groove 351, the inner cavity of the irregular groove 351 is slidably provided with a sliding ball 352, the sliding ball 352 is provided with a drive rod 353, the drive rod 353 is movably inserted through the mounting shell 2, and the end of the drive rod 353 is located in the inner cavity of the placement groove 212. The drive rod 353 is in contact with the push plate 242 in the inner cavity of the placement groove 212. A moving rod 34 is movably inserted through the bottom of the inner shell 23, the moving rod 34 is movably inserted through the inner shell 23 and the fixing plate 232, and the other end of the moving rod 34 is provided with a limit plate 341. In this configuration, ...
[0026] like Figures 1 to 9As shown, further, the inner housing 23 has inner guide slots 321 on the two side walls opposite to the inner slot 231. The two inner guide slots 321 are symmetrical to each other. Two guide sliders 323 are slidably arranged in the inner cavity of each inner guide slot 321. Each guide slider 323 is symmetrical to each other. A drive plate 32 is provided at one end opposite to each other of the two guide sliders 323. The two drive plates 32 are symmetrical to each other. A push plate 324 is provided at the opposite end of each of the two drive plates 32. The two push plates 324 are symmetrical to each other. A swing arm 342 is provided on one side wall opposite to each of the two drive plates 32. The two swing arms 342 are symmetrical to each other. The other ends of the two swing arms 342 are respectively arranged above the limiting plate 341. In this configuration, when the sliding plate 121 moves downward to a certain extent, it can drive the inner housing 23 to move downward. Therefore, when 24 contacts 26, 24 cannot move. Thus, when the inner housing 23 moves downward, it can drive the moving rod 34 to move upward. When the moving rod 34 moves upward, it can drive the limiting plate 341 to move upward. When the limiting plate 341 moves upward, it can push the drive plate 32 to move horizontally with the assistance of the inner guide slot 321 through the swing arm 342.
[0027] Example 3: The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, a river sewage pulse-type water purification system has two external guide slots 322 at each of the mounting slots 213 on the mounting housing 2, and each pair of external guide slots 322 is symmetrical to each other. In a specific embodiment, the mounting housing 2 is also provided with two movable sealing doors 251 at the mounting slots 213, and each pair of movable sealing doors 251 is symmetrical to each other. Furthermore, each pair of movable sealing doors 251 has a wedge-shaped block 25 on one of its opposite side walls, and each pair of wedge-shaped blocks 25 is symmetrical to each other. In this configuration, when the inner housing 23 continues to move downwards, at a certain position, the inner guide slot 321 will be able to engage with the outer guide slot 322 opened in the installation slot 213 on the mounting housing 2. At this time, the drive plate 32 can move into the installation slot 213, thereby pushing the placed purification microorganisms to move. At the same time, at a certain position, it can push the inclined surfaces of the two wedge blocks 25, thereby moving the two wedge blocks 25 and the two movable sealing doors 251 away from each other. Therefore, the installation slot 213 opened at the mounting housing 2 can be opened, allowing river water to enter the inner cavity of the installation slot 213. The water flow will carry the placed purification microorganisms to the overall water surface in the river body 1, thereby prioritizing the microbial water purification of the river water at the bottom of the river body 1.
[0028] The implementation principle of the pulse-type water purification system for river sewage of the present invention is as follows: First, when purifying the sewage in the river body 1, the jack 12 at the bottom of the top plate 111 pushes the sliding plate 121 to move downward along the slide rail 122, causing the gate 123 to move down to intercept the river water upstream of the river body 1. (Before treatment, the staff places the purification microorganisms into the inner cavity of the installation shell 2, so that the purification microorganisms can enter the inner cavity of the rectangular slot 21, and at this time, the purification microorganisms can fall into the inner cavity of the installation shell 2 through the discharge slot 312 on the installation block 31, and then fall onto 24 through the placement slot 212 on the installation shell 2, and then move along 24 to the installation slot 213 on the installation shell 2). Simultaneously, when the sliding plate 121 moves, it will drive the L-shaped mounting rod 3 to move downwards in sync, so that the mounting block 31 at the end of the L-shaped mounting rod 3 enters the inner cavity of the rectangular slot 21. This allows the mounting block 31 to drive the inner shell 23 to move downwards, thus allowing the drive rod 353 to move downwards. When the drive rod 353 contacts the bottom of the rectangular slot 212, the moving rod 34 at the bottom of the inner shell 23 can also contact the stirring rod 243. Therefore, when the inner shell 23 continues to move downwards, the drive rod 353 can move upwards with the assistance of the irregular slot 351 and the sliding ball 352, and can also rotate in a circle. When the drive rod 353 rotates in a circle, it can drive the push plate 242 to drive the rotating rod 241 to rotate with the assistance of the mounting bearing 24. When the rotating rod 241 rotates, it can drive the stirring rod 243 to rotate. At the same time, the moving rod 34 can also move upward. When the moving rod 34 moves upward, it can drive the limiting plate 341 to move upward. When the limiting plate 341 moves upward, it can push the drive plate 32 to move horizontally with the assistance of the inner guide slot 321 through the swing arm 342. At this time, the built-in slot 231 opened in the housing 23 can communicate with the mounting slot 213, thus ensuring the movement of the drive plate 32. As the inner housing 23 continues to move downwards, it allows the drive plate 32 to move into the mounting slot 213, thereby pushing the inclined surfaces of the two wedge blocks 25. This allows the two wedge blocks 25 and the two movable sealing doors 251 to move away from each other, thus opening the mounting slot 213 at the mounting housing 2. This allows river water to enter the inner cavity of the mounting slot 213, and the water flow carries the placed purification microorganisms to the overall water surface within the river body 1. This allows for priority purification of the river water at the bottom of the river body 1 by microorganisms (while the resetting of the movable sealing doors 251 and the wedge blocks 25 is achieved using existing elastic resetting technology). As the gate 123 continues to intercept the river water, the upstream water level gradually rises. When the water level reaches the preset height, the jack 12 drives the sliding plate 121 to move upward, the gate 123 opens, and the river water stored upstream forms a pulse-like flow that impacts downstream. When the water flows through the filter plate 222 on the outside of the mounting housing 2, the filter plate 222 is fixedly installed by the connecting rod 22 and the connecting rod 221, which initially intercepts impurities in the water flow, thereby preventing impurities from blocking the installation slot 213 opened at the mounting housing 2.
[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. A pulse-type water purification system for river sewage, comprising a river body (1), characterized in that: A gate (123) is provided inside the river body (1). An installation shell (2) is provided on one side wall of the gate (123) in the inner cavity of the river body (1). A filter plate (222) is provided at the end of the installation shell (2) away from the gate (123). A rectangular slot (21) is provided on the top of the mounting housing (2), and a placement slot (212) is provided on the bottom of the mounting housing (2). Two upward inclined surfaces (211) are also provided on the rectangular slot (21), and a mounting slot (213) is also provided on the opposite side wall of the mounting housing (2). The inner cavity of the mounting housing (2) is provided with an inner housing (23), and an inner slot (231) is provided through the inner housing (23). A fixing plate (232) is provided in the middle of the inner slot (231), and two mutually symmetrical drive plates (32) are provided on the fixing plate (232).
2. The river sewage pulse-type water purification system according to claim 1, characterized in that, The river body (1) is provided with mounting frames (11) on both sides. The two mounting frames (11) are symmetrical to each other. A top plate (111) is provided above the two mounting frames (111). A jack (12) is provided at the bottom of the top plate (111). A sliding plate (121) is provided at the bottom of the jack (12). A slide rail (122) is provided on the opposite side wall of the two mounting frames (11). The two slide rails (122) are symmetrical to each other. The slide rail (122) and the sliding plate (121) are slidably connected. A gate (123) is provided at the bottom of the sliding plate (121). The gate (123) is used to intercept the river water upstream of the river body (1).
3. The river sewage pulse-type water purification system according to claim 1, characterized in that, Connecting rods (22) are provided on the opposite side walls of the outer side of the mounting housing (2). The two connecting rods (22) are symmetrical to each other. Multiple connecting rods (221) are provided at the ends of the two connecting rods (22) away from the gate (123). A filter plate (222) is provided at the end of the connecting rod (221) away from the connecting rod (22). The filter plate (222) is used to intercept impurities in the river body (1).
4. The river sewage pulse-type water purification system according to claim 2, characterized in that, The sliding plate (121) is provided with an L-shaped mounting rod (3) on one side wall near the mounting housing (2). The end of the L-shaped mounting rod (3) away from the sliding plate (121) is located in the inner cavity of the rectangular slot (21) opened on the mounting housing (2), and the port is provided with a mounting block (31). Both ends of the bottom of the mounting block (31) are provided with downward inclined surfaces (311). The two downward inclined surfaces (311) are symmetrical to each other, and the two downward inclined surfaces (311) are respectively adapted to the upward inclined surface (211). The mounting block (31) is provided with two feeding slots (312). The two feeding slots (312) are symmetrical to each other, and the feeding slots (312) can move through the downward inclined surface (311) opened at the mounting block (31).
5. The river sewage pulse-type water purification system according to claim 1, characterized in that, The inner cavity of the mounting housing (2) is provided with a mounting bearing (24) in the inner cavity of the placement slot (212). A rotating rod (241) is provided on the mounting bearing (24). A stirring rod (243) is provided on the rotating rod (241). A push plate (242) is provided on the rotating rod (241).
6. The river sewage pulse-type water purification system according to claim 4, characterized in that, The mounting block (31) has an inner shell (23) at its bottom. The inner shell (23) has an annular groove (35) at its bottom. The inner wall of the annular groove (35) has a shaped groove (351). A sliding ball (352) is slidably arranged in the inner cavity of the shaped groove (351). A drive rod (353) is arranged on the sliding ball (352). The drive rod (353) is movably inserted through the mounting shell (2), and the end of the drive rod (353) is located in the inner cavity of the placement slot (212). The drive rod (353) fits against the push plate (242) in the inner cavity of the placement slot (212). A moving rod (34) is movably inserted through the bottom of the inner shell (23). The moving rod (34) is movably inserted through the inner shell (23) and the fixing plate (232). A limit plate (341) is arranged at the other end of the moving rod (34).
7. A pulse-type water purification system for river sewage according to claim 6, characterized in that, The inner housing (23) has inner guide slots (321) on the two side walls opposite to the inner slot (231). The two inner guide slots (321) are symmetrical to each other. Two guide sliders (323) are slidably arranged in the inner cavity of each inner guide slot (321). Each guide slider (323) is symmetrical to each other. A drive plate (32) is provided at one end of each pair of guide sliders (323). The two drive plates (32) are symmetrical to each other.
8. A river wastewater pulse-type water purification system according to claim 7, characterized in that, Each of the two drive plates (32) has a push plate (324) at one opposite end. The two push plates (324) are symmetrical to each other. Each of the two drive plates (32) has a swing arm (342) on one opposite side wall. The two swing arms (342) are symmetrical to each other. The other ends of the two swing arms (342) are respectively located above the limiting plate (341).
9. A pulse-type water purification system for river sewage according to claim 1, characterized in that, The mounting housing (2) has two external guide slots (322) at the mounting slot (213), and each of the external guide slots (322) is symmetrical to each other.
10. A pulse-type water purification system for river sewage according to claim 9, characterized in that, The mounting housing (2) is also provided with two movable sealing doors (251) at the mounting slot (213). Each movable sealing door (251) is symmetrical to each other, and each movable sealing door (251) has a wedge block (25) on one side wall opposite to each other. Each wedge block (25) is symmetrical to each other.