Anti-corrosion octagonal sealing dephosphorization filter cloth device
By introducing a scraper mechanism and anti-corrosion coating into the filter cloth device, the problem of insufficient self-cleaning of traditional devices is solved, achieving more efficient internal wall cleaning and corrosion resistance, and extending the service life of the filter cloth device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO AIFEI PURIFICATION EQUIP CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional octagonal dephosphorization filter cloth devices cannot achieve self-cleaning, causing phosphorus and corrosive substances in wastewater to work together to corrode the inner wall of the filter cloth, shortening the device's lifespan.
A scraper mechanism is designed to drive an arc-shaped scraper to move up and down and rotate on the inner wall of the filter box via a motor. Combined with an anti-corrosion coating, the inner wall is isolated from contact with corrosive media, thereby enhancing cleaning efficiency and reducing corrosion.
It effectively cleans deposits on the inner wall of the filter box, extends the life of the device, reduces maintenance costs, and improves corrosion resistance and maintainability.
Smart Images
Figure CN224220912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater phosphorus treatment technology, specifically to a corrosion-resistant octagonal sealed dephosphorization filter cloth device. Background Technology
[0002] An octagonal dephosphorization filter cloth filtration device is a piece of equipment used for filtration and dephosphorization. Its structure typically includes an octagonal filter chamber, a dephosphorization filter cloth made of a special material, and a sealing system at the joints. Its working principle is as follows: the liquid to be filtered is first introduced into the octagonal filter chamber and filtered through the filter cloth. Solid impurities such as phosphorus in the liquid are trapped on the surface of the filter cloth. The filtrate passes through the filter cloth into the interior of the filter chamber and then exits from the filtrate outlet. The dephosphorization function of the filter cloth surface is achieved through chemical reaction or physical adsorption. For example, if the filter cloth is specially treated to contain substances that can chemically react with phosphorus, converting phosphorus into insoluble substances that are trapped on the filter cloth; or the microporous structure and surface characteristics of the filter cloth are utilized to physically adsorb phosphorus, thereby achieving the purpose of dephosphorization.
[0003] Octagonal dephosphorization filter cloth devices are typically used to filter phosphorus from wastewater. However, octagonal sealed dephosphorization filter cloth devices have several shortcomings in practical use. For example, in terms of corrosion prevention, the inner wall of the octagonal dephosphorization filter cloth device located above the filter cloth is often severely corroded. This is because traditional octagonal dephosphorization filter cloth devices cannot achieve self-cleaning. During filtration, impurities may adhere to the inner wall above the filter cloth with the airflow or liquid splash. These impurities may contain corrosive components or adsorb corrosive substances from the wastewater, forming localized corrosion sources, leading to accelerated corrosion of the inner wall in that area, thereby shortening the service life of the device. Furthermore, since filtration typically waits until a round of operations is completed before shutting down to clean the phosphorus on the filter cloth and the inner wall of the device, during long-term continuous filtration, as wastewater continuously passes through the filter cloth, phosphorus and other impurities will continuously accumulate on the surface of the filter cloth. Similarly, phosphorus will gradually adhere to and accumulate on the inner wall of the device. This phosphorus adhering to the inner wall will synergistically interact with other corrosive substances in the wastewater, further aggravating the degree of corrosion on the inner wall. The phosphorus deposits formed on the wall surface may act as electrolytes, promoting electrochemical corrosion and causing the inner wall metal to be continuously eroded, thereby significantly shortening the service life of the device. Utility Model Content
[0004] One of the technical problems this application aims to solve is that traditional octagonal dephosphorization filter cloth devices cannot achieve self-cleaning, which causes phosphorus to synergistically corrode the inner wall of the octagonal dephosphorization filter cloth device with other corrosive substances in the wastewater during operation.
[0005] To address the aforementioned technical problems, this application provides an anti-corrosion octagonal sealed dephosphorization filter cloth device, comprising an octagonal filter box. The upper end of the octagonal filter box is provided with a cover plate. A scraper mechanism is fixedly installed in the middle of the lower end of the cover plate. The scraper mechanism includes a hollow sleeve. The scraper mechanism is located in the middle of the octagonal filter box. The hollow sleeve is fixedly installed in the middle of the lower end of the cover plate. A rotating cylinder is slidably engaged in the middle of the hollow sleeve. A guide groove is provided on one side of the rotating cylinder. An extension rod is fixedly installed through the hollow sleeve at the lower end of the rotating cylinder. Multiple connecting rods are evenly fixedly installed around one end of the extension rod. An arc-shaped scraper is fixedly installed at one end of each of the multiple connecting rods. The plate, with multiple arc-shaped scrapers respectively attached to the inner wall of the octagonal filter box, has a spring sleeved on the outer side of the upper end of the extension rod. One end of the spring is fixedly connected to the rotating drum, and the other end of the spring is fixedly connected to the bottom of the hollow sleeve. A guide rod is fixedly installed on one side of the middle of the rotating drum, and the guide rod and the guide groove are slidably engaged. A toothed plate is movably connected to one side of the upper end of the rotating drum. A rotating shaft is rotatably connected between the upper ends of the middle of the hollow sleeve. A motor is fixedly installed on one side of the upper end of the middle of the hollow sleeve. The output end of the motor is fixedly connected to one end of the rotating shaft. A half gear is fixedly installed on the outer side of the middle of the rotating shaft, and the half gear meshes with the toothed plate.
[0006] In some embodiments, an anti-corrosion coating is sprayed onto the upper part of the center of the octagonal filter box.
[0007] In some embodiments, a through hole is provided at the lower part of the middle of the octagonal filter box. The through hole is conical in shape and the diameter at the upper end is larger than the diameter at the lower end.
[0008] In some embodiments, a filter cloth is snapped into the middle of the octagonal filter box, and an inlet pipe is fixedly connected to the upper part of one side of the middle of the octagonal filter box.
[0009] In some embodiments, handles are fixedly installed on both sides of the upper middle part of the cover plate, and upper fixing plates are installed around the cover plate.
[0010] In some embodiments, a lower fixing plate is fixedly installed around the upper circumference of the octagonal filter box, and the upper fixing plate and the lower fixing plate are connected by screw threads. The octagonal filter box and the cover plate are connected by the cooperation of the upper fixing plate and the lower fixing plate.
[0011] In some embodiments, the lower end of the octagonal filter box is connected to and fixed with a water outlet pipe, and a solenoid valve is fixedly installed on one side of the water outlet pipe.
[0012] In some embodiments, a base is fixedly installed on the outer side of the lower end of the octagonal filter box.
[0013] This utility model has at least the following beneficial effects:
[0014] 1. In use, the scraper mechanism, driven by a motor, engages with a toothed plate to move the rotating drum up and down. Simultaneously, the guide rod and guide groove work together to rotate the drum. This combined up-and-down and rotational motion allows the arc-shaped scraper to remove corrosive substances adhering to the inner wall of the octagonal filter box via a multi-dimensional path. This results in more comprehensive coverage of the filter box's inner wall, effectively eliminating cleaning dead corners and greatly improving the cleaning efficiency of phosphorus and impurities adhering to the inner wall. Consequently, it effectively enhances the corrosion resistance of the octagonal filter box and extends the service life of the entire device.
[0015] 2. When this utility model is in use, by spraying an anti-corrosion coating on the upper part of the middle of the octagonal filter box, the anti-corrosion coating can effectively isolate the inner wall of the filter box from the contact with corrosive media, reduce the corrosion of the inner wall of the filter box by sewage, phosphorus and other impurities, extend the service life of the filter box, reduce maintenance and replacement costs, improve the economy and practicality of the device, and thus further improve the corrosion resistance of the octagonal filter box.
[0016] 3. In use, the cover plate and the octagonal filter box are connected by upper and lower fixing plates and screw threads. This design allows the operator to easily open the filter box by simply unscrewing the screws and lifting the cover plate with the handle when it is necessary to clean, inspect or replace the filter cloth inside the filter box. The operation is simple and convenient, which greatly reduces maintenance costs and time and improves the maintainability of the device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;
[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the octagonal filter box of this utility model;
[0020] Figure 4 This is a schematic diagram showing the connection between the cover plate and the scraper mechanism of this utility model;
[0021] Figure 5 This is a schematic cross-sectional view of the scraper mechanism of this utility model;
[0022] Figure 6 This is a schematic diagram showing the connection relationship between the guide rod and the guide groove of this utility model.
[0023] In the diagram: 1. Octagonal filter box; 10. Outlet pipe; 11. Cover plate; 12. Handle; 13. Upper fixing plate; 14. Lower fixing plate; 15. Inlet pipe; 16. Base; 17. Solenoid valve; 18. Filter cloth; 19. Through hole; 20. Anti-corrosion coating; 2. Scraper mechanism; 21. Hollow sleeve; 22. Rotary drum; 23. Guide groove; 24. Extension rod; 25. Spring; 26. Connecting rod; 27. Arc-shaped scraper; 28. Guide rod; 29. Rotating shaft; 30. Motor; 31. Half gear; 32. Toothed plate. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1: Please refer to Figures 1-6 This utility model provides a technical solution: a corrosion-resistant octagonal sealed dephosphorization filter cloth device, including an octagonal filter box 1. The upper end of the octagonal filter box 1 is provided with a cover plate 11. A scraper mechanism 2 is fixedly installed in the middle of the lower end of the cover plate 11. The scraper mechanism 2 includes a hollow sleeve 21. The scraper mechanism 2 is located in the middle of the octagonal filter box 1. The hollow sleeve 21 is fixedly installed in the middle of the lower end of the cover plate 11. A rotating cylinder 22 is slidably engaged in the middle of the hollow sleeve 21. A guide groove 23 is opened on one side of the rotating cylinder 22. An extension rod 24 is fixedly installed through the hollow sleeve 21 at the lower end of the rotating cylinder 22. Multiple connecting rods 26 are evenly fixedly installed around one end of the extension rod 24. An arc-shaped scraper 27 is fixedly installed at one end of each of the multiple connecting rods 26. The multiple arc-shaped scrapers 27 are respectively connected to the octagonal... The inner wall of the filter box 1 is fitted together. A spring 25 is sleeved on the outer side of the upper end of the extension rod 24. One end of the spring 25 is fixedly connected to the rotating drum 22, and the other end of the spring 25 is fixedly connected to the bottom of the hollow sleeve 21. A guide rod 28 is fixedly installed on one side of the middle of the rotating drum 22. The guide rod 28 and the guide groove 23 are slidably engaged. A toothed plate 32 is movably connected to one side of the upper end of the rotating drum 22. A rotating shaft 29 is rotatably connected between the upper ends of the middle of the hollow sleeve 21. A motor 30 is fixedly installed on one side of the upper end of the middle of the hollow sleeve 21. The output end of the motor 30 is fixedly connected to one end of the rotating shaft 29. A half gear 31 is fixedly installed on the outer side of the middle of the rotating shaft 29. The half gear 31 and the toothed plate 32 mesh with each other. An anti-corrosion coating 20 is sprayed on the upper part of the middle of the octagonal filter box 1.
[0026] In this embodiment, during use, the motor 30 is started via an external device, which drives the rotating shaft 29 and the half gear 31 to rotate. When the half gear 31 rotates in the forward direction, its teeth mesh with the toothed plate 32, and the force between the teeth pushes the toothed plate 32 to move downward in the vertical direction. When the half gear 31 rotates in the reverse direction, it pulls the toothed plate 32 upward. Since the toothed plate 32 is rotatably connected to the rotating cylinder 22 below, the rotating cylinder 22 below moves up and down synchronously along the inner wall of the hollow sleeve 21 during the up and down movement of the toothed plate 32. Due to the special shape design of the guide groove 23, the rotating cylinder 22 rotates along the trajectory of the guide groove 23 while moving up and down along the guide rod 28. The arc-shaped scraper 27 is fixed to the extension rod 24 connected to the rotating drum 22. The rotation of the rotating drum 22 causes the arc-shaped scraper 27 to move in a circular direction in addition to moving up and down along the inner wall of the filter box. This allows the arc-shaped scraper 27 to scrape the inner wall of the filter box at a more comprehensive angle, effectively avoiding cleaning dead corners that may occur due to scraping in one direction. This greatly improves the cleaning efficiency of phosphorus and other impurities attached to the inner wall of the filter box. During the up-and-down and rotation process, the rotating drum 22 will inevitably vibrate due to the characteristics of mechanical transmission and the uneven scraping of impurities. The elasticity of the spring 25 can effectively buffer these vibrations, reduce the transmission of vibration to the entire device, prevent the loosening of parts and fatigue damage of connection parts caused by long-term vibration, and ensure the stability and reliability of the device operation. At the same time, the upper part of the octagonal filter box 1 is coated with an anti-corrosion coating 20, which can effectively isolate the inner wall of the filter box from the corrosive medium, reduce the corrosion of the inner wall of the filter box by sewage, phosphorus and other impurities, extend the service life of the filter box, reduce maintenance and replacement costs, and improve the economy and practicality of the device.
[0027] Example 2: Figure 1-3 As shown, a through hole 19 is provided at the lower part of the middle of the octagonal filter box 1. The through hole 19 is conical in shape and the diameter at the upper end is larger than the diameter at the lower end. A filter cloth 18 is snapped into the middle of the octagonal filter box 1. An inlet pipe 15 is fixedly connected to the upper part of one side of the middle of the octagonal filter box 1. Handles 12 are fixedly installed on both sides of the middle of the upper end of the cover plate 11. Upper fixing plates 13 are installed around the cover plate 11. Lower fixing plates 14 are fixedly installed around the upper end of the octagonal filter box 1. The upper fixing plates 13 and the lower fixing plates 14 are connected by screw threads. The octagonal filter box 1 and the cover plate 11 are connected by the cooperation of the upper fixing plates 13 and the lower fixing plates 14. An outlet pipe 10 is fixedly connected to the lower end of the octagonal filter box 1. A solenoid valve 17 is fixedly installed on one side of the outlet pipe 10. A base 16 is fixedly installed on the outer side of the lower end of the octagonal filter box 1.
[0028] In this embodiment, the octagonal filter box 1 has a filter cloth 18 snapped into the middle, dividing the interior of the filter box into upper and lower areas. This allows wastewater to pass evenly through the filter cloth 18 after entering the filter box through the inlet pipe 15, ensuring comprehensive and efficient filtration. The filter cloth 18 effectively intercepts phosphorus and other impurities in the wastewater, meeting the filtration requirements such as phosphorus removal. The conical through-hole 19 in the lower middle of the filter box has a larger upper diameter than its lower diameter, which helps guide the separation of filtered water and impurities. The water filtered by the filter cloth 18 is more likely to flow towards the narrower lower end of the through-hole 19 under the action of gravity and is discharged through the outlet pipe 10. The solenoid valve 17 installed on one side of the outlet pipe 10 can precisely control the discharge of filtered water. Operators can flexibly control the outflow and drainage speed by controlling the opening and closing time and adjusting the opening degree of the solenoid valve 17 according to actual needs, adapting to different sewage treatment conditions, and ensuring the stable operation and effective control of the entire filtration process. The cover plate 11 and the octagonal filter box 1 are connected by the upper fixing plate 13 and the lower fixing plate 14 and screw threads. This design allows the operator to easily open the filter box by simply unscrewing the screws and lifting the cover plate 11 with the handle 12 when it is necessary to clean, inspect or replace the filter cloth 18 inside the filter box. The operation is simple and convenient, greatly reducing maintenance costs and time, and improving the maintainability of the device. The filter cloth 18 is snapped into the middle of the octagonal filter box 1, dividing the inside of the filter box into upper and lower areas, so that after the sewage enters the filter box through the inlet pipe 15, it can be filtered evenly through the filter cloth 18, ensuring the comprehensiveness and efficiency of filtration. The filter cloth 18 can effectively intercept phosphorus and other impurities in wastewater, meeting the filtration requirements such as phosphorus removal. The conical through hole 19 in the lower middle part of the filter box has a larger upper diameter than the lower diameter, which helps to guide the separation of filtered water and impurities. The water filtered by the filter cloth 18 is more likely to flow to the narrower lower end of the through hole 19 under the action of gravity and is discharged through the outlet pipe 10. The solenoid valve 17 installed on one side of the outlet pipe 10 can accurately control the discharge of filtered water. Operators can flexibly control the outflow and drainage speed by controlling the opening and closing time and adjusting the opening degree of the solenoid valve 17 according to actual needs, adapting to different sewage treatment conditions, and ensuring the stable operation and effective control of the entire filtration process. The cover plate 11 and the octagonal filter box 1 are connected by the upper fixing plate 13 and the lower fixing plate 14 and screw threads. This design allows the operator to easily open the filter box by simply unscrewing the screws and lifting the cover plate 11 with the handle 12 when it is necessary to clean, inspect or replace the filter cloth 18 inside the filter box. The operation is simple and convenient, greatly reducing maintenance costs and time, and improving the maintainability of the device.
[0029] like Figures 1-6As shown, wastewater enters the octagonal filter box 1 through the inlet pipe 15. The inlet pipe 15 is located above the middle side of the filter box, creating a certain flow path for the wastewater after it enters the filter box. This helps the wastewater to be evenly distributed in the filter box, preparing it for subsequent filtration. After entering the filter box, the wastewater passes through the filter cloth 18. The filter cloth 18 can intercept most of the phosphorus and other solid impurities in the wastewater, trapping the pollutants such as phosphorus above the filter cloth 18, thus initially achieving solid-liquid separation. During the filtration process, the motor 30 is started. The motor 30 drives the rotating shaft 29 and the half gear 31 to rotate. The half gear 31 meshes with the toothed plate 32, thereby driving the toothed plate 32 to move up and down. Since the toothed plate 32 is movably connected to the rotating cylinder 22, the rotating cylinder 22 moves up and down under the drive of the toothed plate 32. At the same time, the cooperation between the guide rod 28 and the guide groove 23 causes the rotating cylinder 22 to rotate during the up and down movement. The extension rod 24 at the lower end of the rotating cylinder 22 drives the evenly distributed connecting rods 26 and the arc-shaped scraper 27 to move. The arc-shaped scraper 27 fits against the inner wall of the octagonal filter box 1. Driven by the rotating drum 22, the arc-shaped scraper 27 can move up and down and rotate, thoroughly scraping the inner wall of the filter box to remove impurities such as phosphorus deposits adhering to the inner wall and allow them to fall onto the filter cloth 18. This prevents impurities from accumulating on the inner wall of the filter box, which would affect the filtration effect and the service life of the filter box. The spring 25 plays a role in buffering, self-adapting, and maintaining smooth movement during this process, ensuring that the scraper mechanism 2 can work stably and efficiently. The wastewater that has been initially filtered by the filter cloth 18 continues to flow downwards. Because the through hole 19 is conical in design and the upper diameter is larger than the lower diameter, the water flow speed will increase during the downward flow of wastewater, thereby increasing the filtration speed. The filtered water is discharged from the filter box through the outlet pipe 10. The solenoid valve 17 installed on one side of the outlet pipe 10 can control the discharge of filtered water as needed, achieving precise control of the quality and quantity of filtered water.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A corrosion-resistant octagonal sealed dephosphorization filter cloth device, comprising an octagonal filter box (1), wherein the upper end of the octagonal filter box (1) is provided with a cover plate (11), and a scraper mechanism (2) is fixedly installed in the middle of the lower end of the cover plate (11), characterized in that: The scraper mechanism (2) includes a hollow sleeve (21). The scraper mechanism (2) is located in the middle of the octagonal filter box (1). The hollow sleeve (21) is fixedly installed in the middle of the lower end of the cover plate (11). A rotating cylinder (22) is slidably engaged in the middle of the hollow sleeve (21). A guide groove (23) is provided on one side of the rotating cylinder (22). An extension rod (24) is fixedly installed through the hollow sleeve (21) at the lower end of the rotating cylinder (22). Multiple connecting rods (26) are evenly fixedly installed around one end of the extension rod (24). An arc-shaped scraper (27) is fixedly installed at one end of each of the multiple connecting rods (26). The multiple arc-shaped scrapers (27) are respectively in contact with the inner wall of the octagonal filter box (1). A spring (27) is sleeved on the outer side of the upper end of the extension rod (24). 5) One end of the spring (25) is fixedly connected to the rotating cylinder (22), and the other end of the spring (25) is fixedly connected to the bottom of the hollow sleeve (21). A guide rod (28) is fixedly installed on one side of the middle part of the rotating cylinder (22). The guide rod (28) and the guide groove (23) are slidably engaged. A toothed plate (32) is movably connected to one side of the upper end of the rotating cylinder (22). A rotating shaft (29) is rotatably connected between the upper ends of the middle part of the hollow sleeve (21). A motor (30) is fixedly installed on one side of the upper end of the middle part of the hollow sleeve (21). The output end of the motor (30) is fixedly connected to one end of the rotating shaft (29). A half gear (31) is fixedly installed on the outer side of the middle part of the rotating shaft (29). The half gear (31) and the toothed plate (32) mesh with each other.
2. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 1, characterized in that: The upper part of the middle section of the octagonal filter box (1) is coated with an anti-corrosion coating (20).
3. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 2, characterized in that: The octagonal filter box (1) has a through hole (19) at the bottom of the middle part. The through hole (19) is conical and the diameter at the top is larger than the diameter at the bottom.
4. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 3, characterized in that: The octagonal filter box (1) is fitted with a filter cloth (18) in the middle, and a water inlet pipe (15) is fixedly connected to the upper part of one side of the octagonal filter box (1).
5. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 4, characterized in that: Handles (12) are fixedly installed on both sides of the upper middle part of the cover plate (11), and upper fixing plates (13) are installed around the cover plate (11).
6. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 5, characterized in that: The upper part of the octagonal filter box (1) is fixedly installed with a lower fixing plate (14) on all four sides. The upper fixing plate (13) and the lower fixing plate (14) are connected by screw threads. The octagonal filter box (1) and the cover plate (11) are connected by the cooperation of the upper fixing plate (13) and the lower fixing plate (14).
7. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 6, characterized in that: The lower end of the octagonal filter box (1) is connected to a water outlet pipe (10), and a solenoid valve (17) is fixedly installed on one side of the water outlet pipe (10).
8. The corrosion-resistant octagonal sealed dephosphorization filter cloth device according to claim 7, characterized in that: A base (16) is fixedly installed on the outer side of the lower end of the octagonal filter box (1).