A sewage detection pretreatment device with replaceable filter screen
By combining the structure of the filter cylinder, cylinder cover, piston disc, spring, filter cartridge, positioning column and universal ball, along with the electric cylinder and brush disc, the problem of inconvenient filter replacement and cleaning is solved, realizing convenient filter replacement and cleaning, and meeting the needs of customers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU WATER OPERATION CO LTD
- Filing Date
- 2025-04-08
- Publication Date
- 2026-06-12
AI Technical Summary
The replacement and cleaning process of filters in existing sewage treatment equipment is cumbersome, which increases the labor intensity of staff and reduces the replacement speed, failing to meet the needs of customers.
The filter cartridge employs a combination structure consisting of a treatment cylinder, a cylinder cover, a piston disc, a spring, a filter cartridge, a positioning column, and a universal ball joint. Combined with an electric cylinder and a brush disc, it enables convenient installation, disassembly, and regular cleaning of the filter cartridge. The use of support components and sealing gaskets ensures sealing and support effectiveness.
It enables convenient replacement and cleaning of filter cartridges, reduces operational difficulty, increases replacement speed, and meets customer needs.
Smart Images

Figure CN224345511U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater detection and pretreatment device that facilitates filter replacement. Background Technology
[0002] Wastewater generally refers to wastewater discharged from domestic and industrial sources that has been polluted to a certain extent. Wastewater mainly includes domestic sewage, industrial wastewater, and initial rainwater. Wastewater treatment aims to bring wastewater to a certain water quality for discharge into a water body or reuse. When testing wastewater, filters are used to filter impurities in the wastewater to achieve the effect of pretreatment.
[0003] Currently, most filters are installed directly on the equipment using screws. However, when the filter needs to be replaced or maintained after a long period of use, the staff has to repeatedly turn the screws to disassemble and reassemble it. This method of disassembly and assembly increases the labor intensity of the staff, reduces the replacement speed, and makes it impossible to clean the filter. Therefore, it has the drawback of being inconvenient to replace and clean, and thus cannot meet the needs of customers.
[0004] Therefore, those skilled in the art have provided a wastewater detection and pretreatment device that facilitates filter replacement, in order to solve the problems mentioned in the background art. Utility Model Content
[0005] To address the issue of inconvenient filter replacement and cleaning, this invention provides a wastewater detection and pretreatment device that facilitates filter replacement.
[0006] This utility model provides a wastewater detection and pretreatment device that facilitates filter replacement, and adopts the following technical solution:
[0007] A wastewater testing and pretreatment device with easy-to-replace filter screen includes a treatment cylinder. A cylinder cover is threaded to the top of the treatment cylinder. A piston disc is slidably connected to the inner cavity of the treatment cylinder. Springs are fixedly connected to the left and right sides of the bottom of the piston disc. The bottom of the springs is fixedly connected to the connection point of the treatment cylinder. A filter cartridge is mounted on the top of the piston disc, and the bottom of the filter cartridge is tightly fitted to the connection point of the piston disc. An electric cylinder is fixedly installed on the top of the cylinder cover. The telescopic end of the electric cylinder passes through the cylinder cover and is fixedly connected to a brush disc that cooperates with the filter cartridge. Positioning posts are fixedly connected to the left and right sides of the top of the filter cartridge. Universal balls are movably connected to the top of the positioning posts. Support assemblies are provided on the left and right sides of the bottom of the piston disc, located outside the springs.
[0008] By adopting the above technical solution, the arrangement of the processing cylinder, cylinder cover, piston disc, spring, filter cylinder, positioning column and universal ball can facilitate the pressing and installation of the filter cylinder. At the same time, it is convenient to rebound and remove the filter cylinder from the processing cylinder for disassembly and replacement. By setting up an electric cylinder and brush disc, it is convenient to clean the filter cylinder regularly. By setting up a support component, the piston disc can be guided and supported.
[0009] Optionally, the support assembly includes a positioning cylinder, the top of which is fixedly connected to the piston disc, and a positioning rod is slidably connected to the inner surface of the positioning cylinder, the bottom of which is fixedly connected to the processing cylinder.
[0010] By adopting the above technical solution, the positioning cylinder and positioning rod can provide guidance and support for the piston disc.
[0011] Optionally, a support ring is fixedly connected to the inner cavity of the processing cylinder and located on the outside of the filter cylinder, and a first sealing gasket is fixedly connected to the top of the support ring, with the outer surface of the first sealing gasket tightly fitted to the connection of the filter cylinder.
[0012] By adopting the above technical solution, the support ring and the first sealing gasket can be set to facilitate the support of the filter cartridge and seal the connection between the filter cartridge and the treatment cartridge.
[0013] Optionally, a second sealing gasket is fixedly connected to the top of the processing cylinder, and the outer surface of the second sealing gasket is tightly fitted to the connection between the cylinder cover and the cylinder cover.
[0014] By adopting the above technical solution, the second sealing gasket can seal the connection between the processing cylinder and the cylinder cover.
[0015] Optionally, a water inlet pipe is connected to the top of the left side of the processing cylinder, and a solenoid valve is provided on the outer surface of the water inlet pipe.
[0016] By adopting the above technical solution, the inlet pipe and solenoid valve can facilitate the entry of sewage into the inner cavity of the treatment cylinder.
[0017] Optionally, a drain pipe is connected to the right side of the processing cylinder, and one end of the drain pipe extends to the outside of the processing cylinder.
[0018] By adopting the above technical solution, the installation of drainage pipes facilitates the discharge of filtered wastewater.
[0019] Optionally, the top of the brush disc is provided with uniformly distributed through holes, and the through holes are circular.
[0020] By adopting the above technical solution, the through holes can facilitate the passage of sewage through the brush disc.
[0021] In summary, this utility model has the following beneficial effects:
[0022] 1. This utility model, by setting up a processing cylinder, cylinder cover, piston disc, spring, filter cylinder, positioning column, and universal ball, can easily press and install the filter cylinder, and at the same time, it can easily rebound and remove the filter cylinder from the processing cylinder for disassembly and replacement. By setting up an electric cylinder and brush disc, it can easily clean the filter cylinder regularly. By setting up a support component, it can guide and support the piston disc. With the above structure, it can facilitate replacement, cleaning and use, thus meeting the needs of customers.
[0023] 2. This utility model, by setting a positioning cylinder and a positioning rod, can guide and support the piston disc. The setting of the support ring and the first sealing gasket can facilitate the support of the filter cylinder and seal the connection between the filter cylinder and the treatment cylinder. The setting of the second sealing gasket can seal the connection between the treatment cylinder and the cylinder cover. The setting of the water inlet pipe and the solenoid valve can facilitate the entry of sewage into the inner cavity of the treatment cylinder. The setting of the drain pipe can facilitate the discharge of filtered sewage. The setting of the through hole can facilitate the passage of sewage through the brush disc. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of this utility model;
[0025] Figure 2 This is a cross-sectional view of the processing cylinder structure of this utility model;
[0026] Figure 3 This utility model Figure 2 Enlarged view of section A of the structure;
[0027] Figure 4 This is a perspective view of the filter cartridge structure of this utility model.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Processing cylinder; 2. Cylinder cover; 3. Piston disc; 4. Spring; 5. Filter cartridge; 6. Electric cylinder; 7. Brush disc; 8. Positioning pin; 9. Universal ball; 10. Support assembly; 101. Positioning cylinder; 102. Positioning rod; 11. Support ring; 12. First sealing gasket; 13. Second sealing gasket; 14. Water inlet pipe; 15. Solenoid valve; 16. Drain pipe; 17. Through hole. Detailed Implementation
[0030] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0031] Example 1:
[0032] Please refer to Figures 1-4A wastewater testing and pretreatment device with easy-to-replace filter screen includes a treatment cylinder 1. A cylinder cover 2 is threadedly connected to the top of the treatment cylinder 1. A piston disc 3 is slidably connected to the inner cavity of the treatment cylinder 1. Springs 4 are fixedly connected to the left and right sides of the bottom of the piston disc 3. The bottom of the springs 4 is fixedly connected to the connection point of the treatment cylinder 1. A filter cartridge 5 is mounted on the top of the piston disc 3. The bottom of the filter cartridge 5 is tightly fitted to the connection point of the piston disc 3. An electric cylinder 6 is fixedly installed on the top of the cylinder cover 2. The telescopic end of the electric cylinder 6 passes through the cylinder cover 2 and is fixedly connected to a brush disc 7 that cooperates with the filter cartridge 5. Positioning posts 8 are fixedly connected to the left and right sides of the top of the filter cartridge 5. Universal balls 9 are movably connected to the top of the positioning posts 8. The left and right sides of the bottom of the piston disc 3... Support components 10 are provided on both sides and outside the spring 4. A support ring 11 is fixedly connected to the inner cavity of the treatment cylinder 1 and outside the filter cylinder 5. A first sealing gasket 12 is fixedly connected to the top of the support ring 11. The outer surface of the first sealing gasket 12 is tightly fitted to the connection of the filter cylinder 5. A second sealing gasket 13 is fixedly connected to the top of the treatment cylinder 1. The outer surface of the second sealing gasket 13 is tightly fitted to the connection of the cylinder cover 2. A water inlet pipe 14 is connected to the top of the left side of the treatment cylinder 1. A solenoid valve 15 is provided on the outer surface of the water inlet pipe 14. A drain pipe 16 is connected to the right side of the treatment cylinder 1. One end of the drain pipe 16 extends to the outside of the treatment cylinder 1. Through holes 17 are evenly opened on the top of the brush disc 7. The through holes 17 are circular.
[0033] In this embodiment: By setting up a processing cylinder 1, a cylinder cover 2, a piston disc 3, a spring 4, a filter cylinder 5, a positioning column 8, and a universal ball 9, the present invention can easily press and install the filter cylinder 5, and at the same time, it can easily rebound and remove the filter cylinder 5 from the processing cylinder 1 for disassembly and replacement. By setting up an electric cylinder 6 and a brush disc 7, it can easily clean the filter cylinder 5 regularly. With the above structure, it is easy to replace and clean, thus meeting the needs of customers.
[0034] Example 2:
[0035] Reference Figure 2 The support assembly 10 includes a positioning cylinder 101, the top of which is fixedly connected to the piston disc 3, and a positioning rod 102 is slidably connected to the inner surface of the positioning cylinder 101. The bottom of the positioning rod 102 is fixedly connected to the processing cylinder 1.
[0036] In this embodiment: the present invention can guide and support the piston disc 3 by setting the positioning cylinder 101 and the positioning rod 102.
[0037] The implementation principle of this utility model is as follows: When in use, the operator moves the filter cartridge 5 so that the filter cartridge 5 is inserted into the inner cavity of the processing cylinder 1. At the same time, the bottom of the filter cartridge 5 is tightly fitted with the connection of the piston disc 3. Then, the operator moves and rotates the cylinder cover 2 downward so that the connection of the cylinder cover 2 and the processing cylinder 1 is threaded. While the cylinder cover 2 is rotating downward, the top of the inner cavity of the cylinder cover 2 rotates and moves downward to press the universal ball 9 and the positioning column 8 on both sides. This causes the universal ball 9 to drive the positioning column 8 and the filter cartridge 5 to move downward to press the piston disc 3. This causes the piston disc 3 to drive the positioning cylinder 101 to slide downward on the outer surface of the positioning column 8 to press the spring 4. Additionally, the filter cartridge 5 moves downward and is tightly fitted with the connection of the first sealing gasket 12, thereby achieving the positioning and installation of the filter cartridge 5.
[0038] Next, the staff connected the device to the mains power. Then, the staff activated the external controller of the solenoid valve 15, allowing the sewage to enter the inner cavity of the filter cartridge 5 and the treatment cartridge 1 through the inlet pipe 14. This allowed the filter cartridge 5 to filter impurities in the sewage. At the same time, the filtered sewage was discharged from the inner cavity of the treatment cartridge 1 through the outlet pipe, thus achieving pretreatment of the sewage. When it was necessary to clean the filter cartridge 5, the staff activated the external controller of the electric cylinder 6, causing the extension end of the electric cylinder 6 to drive the brush disc 7 to move up and down reciprocally. This caused the brush disc 7 to move up and down reciprocally against the inner wall of the filter cartridge 5, thereby cleaning the filter cartridge 5 and enabling it to filter normally.
[0039] When the filter cartridge 5 needs to be replaced, the operator closes the external controller of the solenoid valve 15, which shuts off the inlet pipe 14. Then, the operator rotates the moving cover 2 in the opposite direction, causing the cover 2 to move the electric cylinder 6 and the brush disc 7 upward, thereby releasing the seal on the treatment cylinder 1. At the same time, the spring 4 pushes the piston disc 3 upward under the reaction force, causing the piston disc 3 to move the filter cartridge 5 upward, which in turn causes the filter cartridge 5 to move the positioning pin 8 upward and move it out of the inner cavity of the treatment cylinder 1. This makes it convenient for the operator to move the filter cartridge 5 for replacement. The device is simple to operate and easy to replace and clean, thus meeting the needs of customers.
[0040] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.
[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A wastewater detection and pretreatment device with easy-to-replace filter screen, comprising a treatment cylinder (1), characterized in that: The top of the processing cylinder (1) is threaded with a cylinder cover (2). The inner cavity of the processing cylinder (1) is slidably connected with a piston disc (3). The bottom left and right sides of the piston disc (3) are fixedly connected with springs (4). The bottom of the springs (4) is fixedly connected to the connection of the processing cylinder (1). The top of the piston disc (3) is provided with a filter cylinder (5). The bottom of the filter cylinder (5) is tightly fitted to the connection of the piston disc (3). The top of the cylinder cover (2) is fixedly installed with an electric cylinder (6). The telescopic end of the electric cylinder (6) passes through the cylinder cover (2) and is fixedly connected with a brush disc (7) that works with the filter cylinder (5). The top left and right sides of the top of the filter cylinder (5) are fixedly connected with positioning columns (8). The top of the positioning columns (8) is movably connected with a universal ball (9). The bottom left and right sides of the piston disc (3) and the outside of the springs (4) are provided with support components (10).
2. The wastewater detection and pretreatment device with easy filter replacement according to claim 1, characterized in that: The support assembly (10) includes a positioning cylinder (101), the top of which is fixedly connected to the piston disc (3), and a positioning rod (102) is slidably connected to the inner surface of the positioning cylinder (101), the bottom of which is fixedly connected to the processing cylinder (1).
3. The wastewater detection and pretreatment device with easy filter replacement according to claim 1, characterized in that: A support ring (11) is fixedly connected to the inner cavity of the processing cylinder (1) and to the outside of the filter cylinder (5). A first sealing gasket (12) is fixedly connected to the top of the support ring (11). The outer surface of the first sealing gasket (12) is tightly fitted to the connection of the filter cylinder (5).
4. The wastewater detection and pretreatment device with easy filter replacement according to claim 1, characterized in that: The top of the processing cylinder (1) is fixedly connected to a second sealing gasket (13), and the outer surface of the second sealing gasket (13) is tightly fitted to the connection between the cylinder cover (2).
5. A wastewater detection and pretreatment device with easily replaceable filter screen according to claim 1, characterized in that: The top left side of the treatment cylinder (1) is connected to a water inlet pipe (14), and a solenoid valve (15) is provided on the outer surface of the water inlet pipe (14).
6. A wastewater detection and pretreatment device with easily replaceable filter screen according to claim 1, characterized in that: The right side of the treatment cylinder (1) is connected to a drain pipe (16), one end of which extends to the outside of the treatment cylinder (1).
7. A wastewater detection and pretreatment device with easily replaceable filter screen according to claim 1, characterized in that: The top of the brush plate (7) is provided with through holes (17) which are circular.