A sewage treatment filtering device with adjustable aperture

Abstract

This utility model belongs to the field of wastewater treatment filtration devices, specifically relating to a wastewater treatment filtration device with adjustable aperture, including a filter box. A cover is slidably connected to the upper end of the filter box, and a disassembly and assembly mechanism is provided on the filter box. Two symmetrically distributed water inlets are welded to the upper outer side of the filter box, and a filter cover is fixedly connected to the upper middle part of the filter box. This utility model uses a drive shaft to rotate the adjustment cover, causing the adjustment hole to be relatively misaligned with the secondary filter hole on the filter plate. Utilizing the continuous and smooth change of their overlapping area, stepless adjustment of the filter aperture is achieved over a large range. This stepless adjustment mechanism allows for highly refined control of the hole size, overcoming the shortcomings of traditional multi-level adjustment methods, which have a large range and insufficient precision. It can more accurately and flexibly match subtle fluctuations in water quality, and the adjustment process is intuitive and accurate when combined with a pointer.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment filtration devices, specifically a sewage treatment filtration device with adjustable pore size. Background Technology

[0002] In the field of wastewater treatment technology, filtration devices are key equipment for removing suspended solids from wastewater, and are widely used in scenarios such as rural domestic sewage, small-scale industrial wastewater, and agricultural and livestock wastewater. Due to significant differences in water quality from different sources, and the wide range of suspended solids particle sizes (typically between 0.3mm and 5mm), the requirements for filtration precision also vary. Currently, most common wastewater treatment filtration devices on the market adopt a fixed-pore-size filter screen structure, which has the following technical shortcomings: 1. Poor water quality adaptability: Traditional filtration devices use filter screens with a single pore size, which cannot flexibly adjust the filtration precision according to changes in the influent water quality. For example, when treating high-turbidity wastewater (such as aquaculture wastewater), fixed small-pore-size filter screens are prone to clogging; while when treating low-turbidity wastewater, fixed large-pore-size filter screens cannot effectively trap fine suspended solids. Therefore, users often need to configure multiple filtration devices for different water qualities, leading to an increase in equipment investment costs of 30%-50%. 2. Cumbersome filter replacement and high maintenance costs: When water quality fluctuates and the filtration accuracy needs adjustment, the machine must be stopped, the filter chamber disassembled, and a filter with a different pore size replaced. Each replacement takes 20-40 minutes, and frequent disassembly and reassembly can damage the sealing structure, leading to leaks. Statistics show that the average number of filter replacements per year is 4-6, with total consumable and labor costs exceeding 3000 yuan per unit, resulting in a heavy maintenance burden. 3. Unstable filtration flow rate: Some existing adjustable pore size devices use a segmented adjustment method, providing only a limited number of fixed pore size settings (such as 3-4 settings), which cannot achieve precise matching with water quality fluctuations. This results in flow rate fluctuations of up to 30%-40% during the filtration process, seriously affecting the stable operation of subsequent treatment processes (such as biological treatment and membrane filtration). 4. Inconvenient Maintenance and Cleaning: Existing devices often use complex connection methods such as bolt fastening between the cover and the filter chamber, making opening time-consuming and labor-intensive. This severely impacts the efficiency of regular filter cleaning and maintenance. Operators find it difficult to quickly open the cover when cleaning or maintenance is needed. This not only increases the difficulty and time cost of maintenance but also leads to extended maintenance cycles due to operational inconvenience, thereby increasing the risk of filter clogging and equipment failure. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a wastewater treatment filtration device with adjustable pore size, which solves the problems of inconvenient adjustment of the pore size of the filtration structure and inconvenient maintenance and cleaning of the filtration structure.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wastewater treatment filtration device with adjustable aperture, comprising a filter box, a cover slidably connected to the upper end of the filter box, a disassembly and assembly mechanism provided on the filter box, two symmetrically distributed water inlets welded to the upper outer side of the filter box, a filter cover fixedly connected to the upper middle part of the filter box, a plurality of evenly distributed filter discs fixedly connected to the inside of the filter cover, an adjusting shaft mounted inside the filter cover via bearings, an adjusting cover fixedly connected to the lower end of the adjusting shaft, a drive shaft mounted inside the cover via bearings, a drive cover fixedly installed at the upper end of the cover, a gear one mounted inside the drive cover via bearings, a gear two fixedly connected to the outer side of the drive shaft, a locking tooth slidably connected inside the drive cover, a pull ring rod slidably connected inside the drive cover, and a spring one provided on the outer side of the pull ring rod.

[0005] Preferably, a sealing ring is bonded to the upper part of the inner wall of the filter box, the sealing ring is slidably connected to the box cover, a drain outlet is fixedly installed at the lower end of the filter box, and flange rings are provided on the outer side of both the water inlet and the drain outlet. The drain outlet is located at the lowest point of the bottom of the filter box, which facilitates the collection and drainage of the filtered water.

[0006] Preferably, the diameter of the holes in the adjusting cover is the same as the diameter of the holes in the filter element. The adjusting cover is in contact with both the filter cover and the filter element. The filter element is fan-shaped. The hexagonal groove of the drive shaft is slidably connected to the hexagonal rod at the upper end of the adjusting shaft, so that when the cover is opened or closed, the drive shaft and the adjusting shaft can automatically achieve the connection and separation of the transmission connection.

[0007] Preferably, a rocker arm is fixedly mounted on the upper end of the first gear, the second gear meshes with the first gear, and a pointer is fixedly connected to the upper end of the drive shaft. Both the first gear and the second gear are located inside the drive cover, forming an independent lubrication chamber, into which grease can be injected to reduce wear and prevent sewage corrosion.

[0008] Preferably, one end of the first spring is fixedly connected to the drive cover, and the other end of the first spring is fixedly connected to the locking tooth. The pull ring rod is composed of a hexagonal rod and a pull ring seat. The pull ring rod is fixedly connected to the locking tooth, and the locking tooth engages with the tooth groove of the second gear to achieve self-locking and prevent the gear from rotating accidentally due to vibration. Pulling the pull ring rod in the direction of disengaging from the drive cover can overcome the spring force to release the self-locking and perform aperture adjustment.

[0009] Preferably, the disassembly and assembly mechanism includes positioning columns. Multiple positioning columns arranged in a ring are fixedly installed on the upper end of the filter box. Multiple evenly distributed fixing nails are fixedly connected to the upper outer side of the filter box. A limiting frame is slidably connected to the outer side of the fixing nails. A spring is provided on the outer side of the fixing nails. The limiting frame is slidably connected to the box cover and contacts the filter box. The positioning columns can position the box cover.

[0010] Preferably, the positioning post is slidably connected to the box cover, the limiting frame is slidably connected to the positioning post, one end of the second spring is fixedly connected to the fixing pin, and the other end of the second spring is fixedly connected to the limiting frame. The second spring can push the limiting frame to slide to the outside of the box cover to limit the box cover by its elastic force.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a drive shaft to rotate the adjustment cover, causing the adjustment hole and the secondary filter hole on the filter plate to be relatively misaligned. By utilizing the continuous and smooth change of their overlapping area, stepless adjustment of the filter hole diameter is achieved within a large range. This stepless adjustment mechanism allows for highly refined control of the hole size, overcoming the shortcomings of traditional multi-level adjustment methods, which have a large range and insufficient precision. It can more accurately and flexibly match the subtle fluctuations in water quality. The adjustment process is intuitive and accurate when used with a pointer. The unique gear-locking tooth self-locking structure can effectively prevent the adjustment mechanism from rotating on its own due to vibration during equipment operation, ensuring the long-term stability of the set hole diameter, thereby guaranteeing the stability of the output water quality.

[0012] 2. This utility model achieves one-button quick opening and closing of the box cover through the cooperation of spring and limit bracket. Operators do not need to use any tools. They can simply pull the limit bracket to complete the disassembly and assembly of the box cover. This completely solves the problem of time-consuming and laborious traditional bolt fastening. This design greatly simplifies the opening process, making the daily cleaning, inspection and maintenance of the filter cover and adjustment cover extremely convenient and extending its service life. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 Stereoscopic section Figure 1 ; Figure 3 For the present utility model Figure 1 Stereoscopic section Figure 2 ; Figure 4 For the present utility model Figure 2 A magnified view of the local structure; Figure 5 For the present utility model Figure 2 A 3D view of the filter cover; Figure 6 For the present utility model Figure 2 A three-dimensional view of the regulating cover; Figure 7 For the present utility model Figure 3 Enlarged view of the structure of part A.

[0014] In the diagram: 1. Filter box; 2. Box cover; 3. Disassembly and assembly mechanism; 4. Sealing ring; 5. Water inlet; 6. Drain outlet; 7. Filter cover; 8. Filter disc; 9. Adjusting shaft; 10. Adjusting cover; 11. Drive shaft; 12. Drive cover; 13. Gear 1; 14. Rocker arm; 15. Pointer; 16. Gear 2; 17. Pull ring rod; 18. Locking gear; 19. Spring 1; 31. Positioning pin; 32. Fixing nail; 33. Limiting bracket; 34. Spring 2. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-7 An adjustable aperture wastewater treatment filtration device includes a filter box 1, a cover 2 slidably connected to the upper end of the filter box 1, a disassembly and assembly mechanism 3 on the filter box 1, two symmetrically distributed water inlets 5 welded to the upper outer side of the filter box 1, a filter cover 7 fixedly connected to the upper middle part of the interior of the filter box 1, a plurality of evenly distributed filter discs 8 fixedly connected inside the filter cover 7, an adjustment shaft 9 installed inside the filter cover 7 via bearings, an adjustment cover 10 fixedly connected to the lower end of the adjustment shaft 9, a drive shaft 11 installed inside the cover 2 via bearings, a drive cover 12 fixedly installed at the upper end of the cover 2, a gear 13 installed inside the drive cover 12 via bearings, a gear 16 fixedly connected to the outer side of the drive shaft 11, a locking tooth 18 slidably connected inside the drive cover 12, a pull ring rod 17 slidably connected inside the drive cover 12, and a spring 19 provided on the outer side of the pull ring rod 17.

[0017] Please see Figure 1-7A sealing ring 4 is bonded to the upper part of the inner wall of the filter box 1. The sealing ring 4 is slidably connected to the box cover 2. A drain outlet 6 is fixedly installed at the lower end of the filter box 1. Flange rings are provided on the outer sides of both the inlet 5 and the drain outlet 6. The drain outlet 6 is located at the lowest point of the bottom of the filter box 1, which facilitates the collection and drainage of filtered water. The diameter of the hole of the adjusting cover 10 is the same as the diameter of the hole of the filter plate 8. The adjusting cover 10 is in contact with both the filter cover 7 and the filter plate 8. The filter plate 8 is fan-shaped. The hexagonal groove of the drive shaft 11 is slidably connected to the hexagonal rod at the upper end of the adjusting shaft 9, so that when the box cover 2 is opened or closed, the drive shaft 11 can automatically achieve the engagement and disengagement of the transmission connection with the adjusting shaft 9. A rocker arm 1 is fixedly installed at the upper end of the gear 13. 4. Gear 2 16 meshes with gear 1 13. A pointer 15 is fixedly connected to the upper end of the drive shaft 11. Gear 1 13 and gear 2 16 are both located inside the drive cover 12, forming an independent lubrication chamber. Lubricating grease can be injected to reduce wear and prevent sewage corrosion. One end of spring 1 19 is fixedly connected to the drive cover 12, and the other end of spring 1 19 is fixedly connected to the locking tooth 18. The pull ring rod 17 is composed of a hexagonal rod and a pull ring seat. The pull ring rod 17 is fixedly connected to the locking tooth 18. The locking tooth 18 engages with the tooth groove of gear 2 16 to achieve self-locking and prevent the gear from rotating accidentally due to vibration. Pulling the pull ring rod 17 in the direction of disengaging from the drive cover 12 can overcome the spring force to release the self-locking and adjust the aperture.

[0018] Please see Figure 1-7 The disassembly and assembly mechanism 3 includes positioning posts 31. Multiple positioning posts 31 arranged in a ring are fixedly installed on the upper end of the filter box 1. Multiple evenly distributed fixing nails 32 are fixedly connected to the upper outer side of the filter box 1. A limit frame 33 is slidably connected to the outer side of the fixing nails 32. A second spring 34 is provided on the outer side of the fixing nails 32. The limit frame 33 is slidably connected to the box cover 2 and contacts the filter box 1. The positioning posts 31 can position the box cover 2. The positioning posts 31 are slidably connected to the box cover 2, and the limit frame 33 is slidably connected to the positioning posts 31. One end of the second spring 34 is fixedly connected to the fixing nails 32, and the other end of the second spring 34 is fixedly connected to the limit frame 33. The second spring 34 can push the limit frame 33 to slide to the outer side of the box cover 2 through elastic force to limit the box cover 2.

[0019] The specific implementation process of this utility model is as follows: Filtration process: Sewage enters the filter box 1 through the symmetrically distributed inlet 5. The sewage first impacts the filter cover 7, whose built-in filter plate 8 and regulating cover 10 together constitute the core filtration unit. The water flows through the effective overlapping holes formed between the secondary filter holes on the filter plate 8 and the regulating holes on the regulating cover 10. Suspended impurities larger than the currently set pore size are trapped inside the filter unit. The filtered clean water passes through the filter screen and collects at the bottom of the filter box 1 under the action of gravity, and is finally discharged from the drain outlet 6 to enter the subsequent treatment process. Aperture adjustment process: When the filtration accuracy needs to be adjusted, the operator first moves the pull ring rod 17. The pull ring rod 17 drives the locking tooth 18 to move, overcoming the elastic force of the spring 19, causing the locking tooth 18 to separate from the gear 16, releasing the transmission self-lock. Then, the rocker arm 14 is rotated, causing the gear 13 to rotate. The gear 13 meshes with the gear 16, forming a reduction gear pair, which transmits torque and motion to the drive shaft 11. The hexagonal groove at the lower end of the drive shaft 11 meshes with the hexagonal rod at the upper end of the adjusting shaft 9, thereby driving the adjusting shaft 9 and its bottom adjusting cover 10 to rotate inside the filter cover 7. The rotation of the adjusting cover 10 causes the adjusting hole on its side wall to engage with the fixed filter plate 8. The secondary filter holes on the upper part are relatively misaligned in the circumferential direction, and the area of ​​the overlapping holes changes continuously: when the rocker arm 14 is rotated in the forward direction, the overlapping area decreases, the effective filter hole diameter becomes smaller, and the filtration accuracy is improved; when rotated in the reverse direction, the overlapping area increases, the effective filter hole diameter becomes larger, the flow rate increases, and the anti-clogging ability is enhanced. After adjusting to the target hole diameter, the adjustment angle can be judged by the pointer 15. When the pull ring rod 17 is released, the spring 19 pushes the locking tooth 18 to re-engage in the tooth groove of the gear 16, realizing self-locking and preventing the hole diameter from changing due to vibration during equipment operation. Maintenance and cleaning process: When cleaning or maintenance is required, use the disassembly mechanism 3 to pull the limit bracket 33 to overcome the elastic force of the spring 34 and make it detach from the edge of the cover 2. At this time, the cover 2 can be lifted directly upward. During this process, the hexagonal groove at the lower end of the drive shaft 11 and the hexagonal rod at the upper end of the adjusting shaft 9 will automatically separate, without affecting the internal filter components. After the cover 2 is opened, the operator can easily perform a thorough rinse or maintenance on the entire filter unit composed of the filter cover 7 and the adjusting cover 10. After maintenance is completed, the cover 2 can be quickly reset.

[0020] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment filtration device with adjustable pore size, comprising a filter box (1), characterized in that: The filter box (1) is slidably connected to a cover (2) at its upper end. The filter box (1) is equipped with a disassembly and assembly mechanism (3). Two symmetrically distributed water inlets (5) are welded to the upper outer side of the filter box (1). A filter cover (7) is fixedly connected to the upper middle part of the filter box (1). Multiple evenly distributed filter discs (8) are fixedly connected inside the filter cover (7). An adjusting shaft (9) is installed inside the filter cover (7) via a bearing. An adjusting cover (10) is fixedly connected to the lower end of the adjusting shaft (9). The inside of the box cover (2) is equipped with a drive shaft (11) through a bearing. The upper end of the box cover (2) is fixedly equipped with a drive cover (12). The inside of the drive cover (12) is equipped with a gear one (13) through a bearing. The outside of the drive shaft (11) is fixedly connected with a gear two (16). The inside of the drive cover (12) is slidably connected with a locking tooth (18). The inside of the drive cover (12) is slidably connected with a pull ring rod (17). The outside of the pull ring rod (17) is provided with a spring one (19).

2. The wastewater treatment filtration device with adjustable pore size according to claim 1, characterized in that: A sealing ring (4) is bonded to the upper part of the inner wall of the filter box (1). The sealing ring (4) is slidably connected to the box cover (2). A drain outlet (6) is fixedly installed at the lower end of the filter box (1). Flange rings are provided on the outer sides of the water inlet (5) and the drain outlet (6).

3. The wastewater treatment filtration device with adjustable pore size according to claim 1, characterized in that: The diameter of the hole in the adjustment cover (10) is the same as the diameter of the hole in the filter (8). The adjustment cover (10) is in contact with both the filter cover (7) and the filter (8). The hexagonal groove of the drive shaft (11) is slidably connected to the hexagonal rod at the upper end of the adjustment shaft (9).

4. The wastewater treatment filtration device with adjustable pore size according to claim 1, characterized in that: A rocker arm (14) is fixedly installed on the upper end of the first gear (13), the second gear (16) meshes with the first gear (13), and a pointer (15) is fixedly connected to the upper end of the drive shaft (11). The first gear (13) and the second gear (16) are both located inside the drive cover (12).

5. The wastewater treatment filtration device with adjustable pore size according to claim 1, characterized in that: One end of the first spring (19) is fixedly connected to the drive cover (12), and the other end of the first spring (19) is fixedly connected to the locking tooth (18). The pull ring rod (17) is composed of a hexagonal rod and a pull ring seat. The pull ring rod (17) is fixedly connected to the locking tooth (18), and the locking tooth (18) engages with the tooth groove of the second gear (16).

6. The wastewater treatment filtration device with adjustable pore size according to claim 1, characterized in that: The disassembly and assembly mechanism (3) includes positioning columns (31). Multiple positioning columns (31) are fixedly installed on the upper end of the filter box (1) in a ring. Multiple evenly distributed fixing nails (32) are fixedly connected to the upper outer side of the filter box (1). A limit frame (33) is slidably connected to the outer side of the fixing nail (32). A spring (34) is provided on the outer side of the fixing nail (32). The limit frame (33) is slidably connected to the box cover (2). The limit frame (33) is in contact with the filter box (1).

7. A wastewater treatment filtration device with adjustable pore size according to claim 6, characterized in that: The positioning post (31) is slidably connected to the box cover (2), the limiting frame (33) is slidably connected to the positioning post (31), one end of the second spring (34) is fixedly connected to the fixing nail (32), and the other end of the second spring (34) is fixedly connected to the limiting frame (33).

Images