A pumped storage power plant sewage filtering device and method

Abstract

The application provides a pump storage power station sewage filtering device and method, a pump station is fixedly arranged on the top surface of a base, a connecting pipeline is fixedly and communicatively arranged on one side of the pump station, a supporting column is detachably arranged on the bottom surface of the connecting pipeline, and the bottom surface of the supporting column is fixedly connected with the top surface of the base; further comprising: a filtering mechanism, the filtering mechanism comprises a plurality of connecting plates, an installation plate is fixedly arranged on one side of each connecting plate, the installation plate is fixedly connected with an external water storage pool, and the water storage pool is matched with the connecting pipeline; an auxiliary mechanism is arranged in the filtering mechanism, the auxiliary mechanism comprises a plurality of filter screens for filtering sewage; two linkage mechanisms are arranged on the two sides of the auxiliary mechanism, and are used for connecting the auxiliary mechanism and the filtering mechanism, so that the auxiliary mechanism and the filtering mechanism work simultaneously. The filtering device is convenient to install, can effectively filter the sewage in the pipeline of the pump storage power station, can filter the sewage in multiple layers, has good filtering effect, and can effectively prolong the service life of the pump storage power station.

Description

Technical Field

[0001] This invention relates to the field of pumped storage power station technology, specifically to a sewage filtration device and method for a pumped storage power station. Background Technology

[0002] Pumped-storage power stations utilize electricity generated during periods of low electricity demand to pump water into an upper reservoir, and then release the water into a lower reservoir to generate electricity during periods of high demand. In this way, they can convert excess electricity generated during periods of low grid load into high-value electricity generated during peak periods. Furthermore, pumped-storage power stations are suitable for frequency and phase regulation, stabilizing the frequency and voltage of the power system, and can serve as backup power sources in case of emergencies, improving the efficiency of thermal and nuclear power plants within the system.

[0003] When a pumped-storage power station is in operation, water needs to be pumped from the reservoir. Generally, the reservoir is exposed to the elements, so there will be a lot of pollutants in the water. Under the negative pressure of the water flow, the pollutants will accumulate in the pipes. When a large amount of pollutants enters the pumped-storage power station through the pipes, it will damage the service life of the pumped-storage power station and may even cause it to be scrapped. Summary of the Invention

[0004] The purpose of this invention is to provide a filtration device and method for pumped storage power stations. This filtration device is easy to install, can effectively filter dirt inside the pipelines of pumped storage power stations, and can filter dirt in multiple layers, resulting in good filtration effect and thus effectively extending the service life of pumped storage power stations.

[0005] To achieve the above-mentioned technical features, the present invention aims to provide a sewage filtration device for a pumped storage power station, comprising a base, a pump station fixedly installed on the top surface of the base, a connecting pipe fixedly connected to one side of the pump station, and a support column detachably installed on the bottom surface of the connecting pipe, with the bottom surface of the support column fixedly connected to the top surface of the base. Also includes: The filtration mechanism includes several connecting plates, and an mounting plate is fixedly installed on one side of each connecting plate. The mounting plate is fixedly connected to an external water storage tank, and the water storage tank is compatible with the connecting pipe. An auxiliary mechanism, located inside the filtration mechanism, includes several filter screens for filtering dirt. Two linkage mechanisms are located on both sides of the auxiliary mechanism to connect the auxiliary mechanism and the filtration mechanism, enabling the auxiliary mechanism and the filtration mechanism to work simultaneously.

[0006] A support frame is fixedly installed on one side of several mounting plates. A filter base plate is detachably installed on the bottom surface of the support frame, and a positioning seat is fixedly installed on the top surface of the filter base plate.

[0007] The support frame has two filter side plates located above the filter base plate that can be disassembled and installed inside. Each of the two filter side plates has a sliding groove fixed on one side.

[0008] The support frame has a filter panel that can be disassembled and installed inside, located above the filter base plate. The filter panel is at the same height as the filter side plate.

[0009] The support frame has a top plate that is disassembled and installed inside, located above the filter side plate. The top plate abuts against the connecting pipe. Two sliders are fixedly installed on the bottom surface of the top plate, and the two sliders are respectively engaged with two sliding grooves. The support frame and the top plate are interference fit.

[0010] A hollow cylinder is provided on the outer side of each of the filter screens, and a connecting rod is provided between each of the hollow cylinders.

[0011] The linkage mechanism includes a winding roller, with a steel wire rope wound around the outside of the winding roller. A linkage block is fixedly installed at one end of the steel wire rope, and the linkage block is fixedly connected to the hollow cylinder.

[0012] The end of the wire rope away from the linkage block is fixedly equipped with a lifting block located below the slider, and the lifting block is slidably connected to the slide groove.

[0013] A support rod is fixedly installed on one side of the winding roller, and the end of the support rod away from the winding roller is fixedly connected to one side of the filter panel. A stabilizing rod is fixedly installed on one side of the winding roller, and the end of the stabilizing rod away from the winding roller is fixedly connected to one side of the mounting plate.

[0014] A method for filtering contaminants in a pumped-storage power station, the method employing the aforementioned pumped-storage power station contaminant filtration device, includes the following steps: Step 1, Installation of the filter mechanism: When using the sewage filtration device of the pumped storage power station, the support frame is securely installed on the mounting plate with expansion bolts. After the support frame is installed, the filter base plate is placed on the bottom inside the support frame. After the filter base plate is installed, the filter side plate and filter panel are placed on top of the filter base plate. Step 2, Installation of the top plate: After the filter side plates and filter panels are installed, the top plate is installed on the filter side plates and filter panels. The top plate is interference-fitted with the support frame to improve the connection stability between the support frame and the filter side plates, filter panels, filter bottom plates and top plate, so as to filter dirt and protect the pump station. Step 3, Arrangement and installation of the linkage mechanism: During the installation of the top plate, the top plate will push the slider to slide in the groove. The sliding of the slider will push the lifting block to descend. The descent of the lifting block will pull the wire rope to move. The winding roller can be used to turn the pulling force of the lifting block pulling the wire rope into the pulling force of the wire rope pulling the linkage block. Step 4, filtration of waste: The steel wire rope pulls the linkage block, which in turn causes the hollow cylinder to rise. The hollow cylinder is then inserted into the connecting pipe, making it easier for the filter screen to come into contact with the connecting pipe, thereby further filtering out dirt and preventing dirt from entering the connecting pipe, resulting in a good filtration effect.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The sewage filtration device for pumped storage power stations of the present invention is easy to install and can filter sewage in multiple layers with good filtration effect.

[0016] 2. The present invention relates to a sewage filtration device for pumped storage power stations. During installation, the support frame is securely installed on the mounting plate using expansion bolts. After the support frame is installed, the filter base plate is placed on the bottom surface inside the support frame. After the filter base plate is installed, the filter side plate and filter panel are placed on top of the filter base plate. After the filter side plate and filter panel are installed, the top plate is installed on the filter side plate and filter panel. The top plate is interference-fitted with the support frame, which facilitates the connection stability between the support frame and the filter side plate, filter panel, filter base plate and top plate, resulting in high installation efficiency and convenient filtration of sewage, thereby protecting the pump station. 3. In the pumped storage power station waste filtration device of the present invention, when the top plate is installed, the top plate will push the slider to slide in the slide groove. The sliding of the slider will push the lifting block to descend. The descent of the lifting block will pull the wire rope to move. Using the winding roller, the winding roller can easily turn the pulling force of the lifting block pulling the wire rope into the pulling force of the wire rope pulling the linkage block. The wire rope pulling the linkage block will drive the hollow cylinder to rise. The hollow cylinder is inserted into the connecting pipe, which facilitates the contact between the filter screen and the connecting pipe, thereby further filtering the waste and preventing the waste from entering the connecting pipe, resulting in good filtration effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 This is a three-dimensional front view of the filtration mechanism of the present invention.

[0020] Figure 3 This is a three-dimensional rear view schematic diagram of the filtration mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the filtration mechanism of the present invention.

[0022] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0023] Figure 6 This is a schematic diagram showing the disassembled structure of the filter side plate, filter panel, filter bottom plate, and top plate of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the linkage mechanism of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the auxiliary mechanism of the present invention.

[0026] In the diagram: 1. Base; 2. Filtering mechanism; 3. Linkage mechanism; 4. Auxiliary mechanism; 10. Pump station; 11. Support column; 12. Connecting pipe; 13. Water storage tank; 14. Mounting plate; 20. Support frame; 21. Connecting plate; 22. Filter panel; 23. Filter base plate; 24. Top plate; 25. Filter side plate; 30. Support rod; 31. Winding roller; 32. Stabilizing rod; 33. Wire rope; 34. Lifting block; 35. Linkage block; 40. Hollow cylinder; 41. Filter screen; 42. Connecting rod; 230. Positioning seat; 240. Sliding block; 250. Slide groove. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: A sewage filtration device for a pumped storage power station includes a base 1, a pump station 10 fixedly mounted on the top surface of the base 1, a connecting pipe 12 fixedly connected to one side of the pump station 10, and a support column 11 detachably mounted on the bottom surface of the connecting pipe 12, with the bottom surface of the support column 11 fixedly connected to the top surface of the base 1; it also includes a filtration mechanism 2, which comprises several connecting plates 21, with an mounting plate 14 fixedly mounted on one side of each connecting plate 21, the mounting plate 14 being fixedly connected to an external water storage tank 13, the water storage tank 13 being adapted to the connecting pipe 12; an auxiliary mechanism 14 disposed inside the filtration mechanism 2, the auxiliary mechanism 14 comprising several filter screens 41 for filtering sewage; and two linkage mechanisms 3 disposed on both sides of the auxiliary mechanism 14 for connecting the auxiliary mechanism 14 and the filtration mechanism 2, enabling the auxiliary mechanism 14 and the filtration mechanism 2 to operate simultaneously. The aforementioned filtration device can effectively filter out contaminants inside the pipelines of pumped storage power stations, and can filter contaminants in multiple layers, resulting in good filtration and thus effectively extending the service life of pumped storage power stations.

[0029] Furthermore, a support frame 20 is fixedly installed on one side of several of the mounting plates 14. A filter base plate 23 is detachably installed on the inner bottom surface of the support frame 20, and a positioning seat 230 is fixedly installed on the top surface of the filter base plate 23. Through the above structural design, the support frame facilitates the stable installation of the filter base plate, and the filter base plate facilitates the filtration of dirt and prevents dirt from entering the pump station through the pipeline.

[0030] Furthermore, two filter side plates 25 located above the filter base plate 23 are detachably installed inside the support frame 20, and each of the two filter side plates 23 has a sliding groove 250 fixedly provided on one side. Through the above structural design, the support frame and filter base plate can easily and securely install the filter side plates, and the filter side plates can easily filter dirt and prevent dirt from entering the pump station through the pipeline.

[0031] Furthermore, a filter panel 22 is detachably installed inside the support frame 20, located above the filter base plate 23. The filter panel 22 is at the same height as the filter side plate 23. Through the above structural design, the support frame and filter base plate facilitate the stable installation of the filter panel, and the filter panel facilitates the filtration of dirt, preventing dirt from entering the pump station through the pipeline.

[0032] Furthermore, a top plate 24 is detachably installed inside the support frame 20, located above the filter side plate 23. The top plate 24 abuts against the connecting pipe 12. Two sliders 240 are fixedly installed on the bottom surface of the top plate 24, and the two sliders 240 respectively cooperate with two sliding grooves 250. The support frame 20 and the top plate 24 are interference-fitted. Through the above structural design, the support frame, filter side plate, and filter panel can be easily and securely installed with the top plate. The interference fit between the top plate and the support frame ensures a stable connection between the support frame and the filter side plate, filter panel, filter bottom plate, and top plate, preventing them from being washed away by water flow and facilitating the filtration of dirt.

[0033] Furthermore, hollow cylinders 40 are provided on the outer sides of each of the plurality of filter screens 41, and connecting rods 42 are provided between each of the plurality of hollow cylinders 40. Through the above structural design, during use, the filter screens abut against the water inlet end of the connecting pipe, which facilitates further filtration of dirt and improves the filtration effect.

[0034] Furthermore, the linkage mechanism 3 includes a winding roller 31, with a steel wire rope 33 wound around its outer side. A linkage block 35 is fixedly installed at one end of the steel wire rope 33, and the linkage block 35 is fixedly connected to the hollow cylinder 40. Through the above structural design, the movement of the steel wire rope facilitates the movement of the linkage block, and the movement of the linkage block facilitates the insertion of the hollow cylinder into the connecting pipe, thereby facilitating the contact between the filter screen and the connecting pipe.

[0035] Furthermore, a lifting block 34 is fixedly installed at the end of the wire rope 33 away from the linkage block 35, located below the slider 240, and the lifting block 34 is slidably connected to the slide groove 250. Through this structural design, the movement of the slider facilitates the descent of the lifting block, and the descent of the lifting block facilitates the movement of the wire rope.

[0036] Furthermore, a support rod 30 is fixedly installed on one side of the winding roller 31, and the end of the support rod 30 away from the winding roller 31 is fixedly connected to one side of the filter panel 22. A stabilizing rod 32 is fixedly installed on one side of the winding roller 31, and the end of the stabilizing rod 32 away from the winding roller 31 is fixedly connected to one side of the mounting plate 14. Through the above structural design, the support rod and stabilizing rod facilitate the stable installation of the winding roller, and the winding roller facilitates the conversion of the pulling force of the lifting block pulling the wire rope into the pulling force of the wire rope pulling the linkage block, making it convenient to use.

[0037] Example 2: Please see Figures 1-8 This invention provides a technical solution: a sewage filtration device for a pumped storage power station, comprising a base 1, a pump station 10 fixedly mounted on the top surface of the base 1, and a connecting pipe 12 fixedly connected to one side of the pump station 10. A support column 11 is detachably installed on the bottom surface of the connecting pipe 12, and the bottom surface of the support column 11 is fixedly connected to the top surface of the base 1; further comprising: a filtration mechanism 2, the filtration mechanism 2 comprising a plurality of connecting plates 21, an mounting plate 14 fixedly mounted on one side of the plurality of connecting plates 21, the mounting plate 14 being fixedly connected to an external water storage tank 13, and the water storage tank 13 being adapted to the connecting pipe 12; a support frame 20 fixedly mounted on one side of the plurality of mounting plates 14, and a detachable support frame 20 being installed on the inner bottom surface of the support frame 20. A filter base plate 23 is provided, and a positioning seat 230 is fixedly provided on the top surface of the filter base plate 23. Two filter side plates 25 located above the filter base plate 23 are disassembled and installed inside the support frame 20, and a sliding groove 250 is fixedly provided on one side of each of the two filter side plates 25. A filter panel 22 located above the filter base plate 23 is disassembled and installed inside the support frame 20, and the filter panel 22 is at the same height as the filter side plates 25. A top plate 24 located above the filter side plates 25 is disassembled and installed inside the support frame 20, and the top plate 24 abuts against the connecting pipe 12. Two sliders 240 are fixedly provided on the bottom surface of the top plate 24, and the two sliders 240 respectively cooperate with the two sliding grooves 250. The support frame 20 and the top plate 24 are interference fit.

[0038] Through the above structural design, the support frame 20 is securely installed on the mounting plate 14 using expansion screws. After the support frame 20 is installed, the filter base plate 23 is placed on the bottom surface inside the support frame 20. After the filter base plate 23 is installed, the filter side plate 25 and filter panel 22 are placed on top of the filter base plate 23. After the filter side plate 25 and filter panel 22 are installed, the top plate 24 is installed on the filter side plate 25 and filter panel 22. The top plate 24 is interference-fitted with the support frame 20, which facilitates the connection stability between the support frame 20 and the filter side plate 25, filter panel 22, filter base plate 23 and top plate 24, resulting in high installation efficiency and convenient filtration of dirt, thereby protecting the pump station 10.

[0039] An auxiliary mechanism 4 is located inside the filter mechanism 2. The auxiliary mechanism 4 includes several filter screens 41 for filtering dirt. Hollow cylinders 40 are provided on the outer sides of each filter screen 41, and connecting rods 42 are provided between each hollow cylinder 40. Two linkage mechanisms 3 are located on both sides of the auxiliary mechanism 4 to connect the auxiliary mechanism 4 and the filter mechanism 2, enabling simultaneous operation of both. Each linkage mechanism 3 includes a winding roller 31, with a steel wire rope 33 wound around its outer side. One end of the steel wire rope 33 is fixed... A linkage block 35 is fixedly provided and is fixedly connected to the hollow cylinder 40. A lifting block 34 located below the slider 240 is fixedly provided at the end of the wire rope 33 away from the linkage block 35, and the lifting block 34 is slidably connected to the slide groove 250. A support rod 30 is fixedly provided on one side of the winding roller 31, and the end of the support rod 30 away from the winding roller 31 is fixedly connected to one side of the filter panel 22. A stabilizing rod 32 is fixedly provided on one side of the winding roller 31, and the end of the stabilizing rod 32 away from the winding roller 31 is fixedly connected to one side of the mounting plate 14.

[0040] Through the above structural design, the top plate 24 will push the slider 240 to slide in the groove 250. The sliding of the slider 240 will push the lifting block 34 to descend. The descent of the lifting block 34 will pull the wire rope 33 to move. Using the winding roller 31, the winding roller 31 can easily turn the pulling force of the lifting block 34 pulling the wire rope 33 into the pulling force of the wire rope 33 pulling the linkage block 35. The wire rope 33 pulling the linkage block 35 will drive the hollow cylinder 40 to rise. The hollow cylinder 40 is inserted into the connecting pipe 12, which facilitates the contact between the filter screen 41 and the connecting pipe 12, thereby further filtering dirt and preventing dirt from entering the connecting pipe 12, resulting in a good filtration effect.

[0041] Example 3: A method for filtering contaminants in a pumped-storage power station, the method employing the aforementioned pumped-storage power station contaminant filtration device, includes the following steps: Step 1, Installation of filter mechanism 2: When using the sewage filtration device of the pumped storage power station, the support frame 20 is securely installed on the mounting plate 14 by expansion screws. After the support frame 20 is installed, the filter base plate 23 is placed on the bottom inside the support frame 20. After the filter base plate 23 is installed, the filter side plate 25 and the filter panel 22 are placed on top of the filter base plate 23. Step 2, Installation of top plate 24: After the filter side plate 25 and filter panel 22 are installed, the top plate 24 is installed on the filter side plate 25 and filter panel 22. The top plate 24 is interference-fitted with the support frame 20 to improve the connection stability between the support frame 20 and the filter side plate 25, filter panel 22, filter bottom plate 23 and top plate 24, so as to filter dirt and protect the pump station 10. Step 3, Arrangement and installation of linkage mechanism 3: When the top plate 24 is installed, the top plate 24 will push the slider 240 to slide in the slide groove 250. The sliding of the slider 240 will push the lifting block 34 to descend. The descent of the lifting block 34 will pull the wire rope 33 to move. Using the winding roller 31, the winding roller 31 can easily turn the pulling force of the lifting block 34 pulling the wire rope 33 into the pulling force of the wire rope 33 pulling the linkage block 35. Step 4, filtration of waste: The steel wire rope 33 pulls the linkage block 35, which will drive the hollow cylinder 40 to rise. The hollow cylinder 40 is inserted into the connecting pipe 12, which facilitates the contact between the filter screen 41 and the connecting pipe 12, thereby further filtering dirt and preventing dirt from entering the connecting pipe 12, resulting in a good filtration effect.

[0042] 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 sludge filtration device for a pumped storage power station, characterized in that: Includes a base (1), on the top surface of the base (1) a pump station (10) is fixedly installed, and a connecting pipe (12) is fixedly connected to one side of the pump station (10). A support column (11) is detachably installed on the bottom surface of the connecting pipe (12), and the bottom surface of the support column (11) is fixedly connected to the top surface of the base (1). Also includes: The filter mechanism (2) includes several connecting plates (21), and an mounting plate (14) is fixedly provided on one side of the several connecting plates (21). The mounting plate (14) is fixedly connected to the external water storage tank (13), and the water storage tank (13) is adapted to the connecting pipe (12). An auxiliary mechanism (4) is provided inside the filter mechanism (2), and the auxiliary mechanism (4) includes a plurality of filter screens (41) for filtering dirt. Two linkage mechanisms (3) are set on both sides of the auxiliary mechanism (4) to connect the auxiliary mechanism (4) and the filter mechanism (2), so that the auxiliary mechanism (4) and the filter mechanism (2) work simultaneously; A support frame (20) is fixedly provided on one side of several mounting plates (14), and a filter base plate (23) is disassembled and installed on the inner bottom surface of the support frame (20), and a positioning seat (230) is fixedly provided on the top surface of the filter base plate (23). The support frame (20) has two filter side plates (25) located above the filter base plate (23) inside. Each of the two filter side plates (25) has a sliding groove (250) fixedly installed on one side. The support frame (20) is internally detachable and installed with a filter panel (22) located above the filter base plate (23), and the filter panel (22) is at the same height as the filter side plate (25); The support frame (20) has a top plate (24) installed inside, which is located above the filter side plate (25). The top plate (24) abuts against the connecting pipe (12). Two sliders (240) are fixedly installed on the bottom surface of the top plate (24). The two sliders (240) are respectively matched with two sliding grooves (250). The support frame (20) and the top plate (24) are interference fit. Hollow cylinders (40) are provided on the outer side of several of the filter screens (41), and connecting rods (42) are provided between several hollow cylinders (40). The linkage mechanism (3) includes a winding roller (31), a steel wire rope (33) is wound around the outside of the winding roller (31), and a linkage block (35) is fixedly provided at one end of the steel wire rope (33), and the linkage block (35) is fixedly connected to the hollow cylinder (40). The end of the wire rope (33) away from the linkage block (35) is fixedly provided with a lifting block (34) located below the slider (240), and the lifting block (34) is slidably connected to the slide groove (250).

2. The sewage filtration device for a pumped storage power station according to claim 1, characterized in that: A support rod (30) is fixedly provided on one side of the winding roller (31). The end of the support rod (30) away from the winding roller (31) is fixedly connected to one side of the filter panel (22). A stabilizing rod (32) is fixedly provided on one side of the winding roller (31). The end of the stabilizing rod (32) away from the winding roller (31) is fixedly connected to one side of the mounting plate (14).

3. A method for filtering contaminants in a pumped-storage power station, characterized in that, The filtration method employs the sewage filtration device for pumped storage power stations as described in claim 2, and includes the following steps: Step 1, Installation of the filter mechanism (2): When using the sewage filtration device of the pumped storage power station, the support frame (20) is securely installed on the mounting plate (14) by expansion screws. After the support frame (20) is installed, the filter base plate (23) is placed on the bottom inside the support frame (20). After the filter base plate (23) is installed, the filter side plate (25) and filter panel (22) are placed on top of the filter base plate (23). Step 2, Installation of the top plate (24): After the filter side plate (25) and filter panel (22) are installed, the top plate (24) is installed on the filter side plate (25) and filter panel (22). The top plate (24) is interference-fitted with the support frame (20) to improve the connection stability between the support frame (20) and the filter side plate (25), filter panel (22), filter bottom plate (23) and top plate (24) so ​​as to filter dirt and protect the pump station (10). Step 3, Arrangement and installation of the linkage mechanism (3): When the top plate (24) is installed, the top plate (24) will push the slider (240) to slide in the groove (250). The sliding of the slider (240) will push the lifting block (34) to descend. The descent of the lifting block (34) will pull the wire rope (33) to move. Using the winding roller (31), the winding roller (31) can easily turn the pulling force of the lifting block (34) pulling the wire rope (33) into the pulling force of the wire rope (33) pulling the linkage block (35). Step 4, filtration of waste: The steel wire rope (33) pulls the linkage block (35), which will drive the hollow cylinder (40) to rise. The hollow cylinder (40) is inserted into the connecting pipe (12), which facilitates the filter screen (41) to come into contact with the connecting pipe (12), thereby further filtering dirt and preventing dirt from entering the connecting pipe (12), resulting in a good filtration effect.

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