A sewage pretreatment device
By designing the crushing roller and filter tank structure in the sewage pretreatment device, the problem of large garbage and debris clogging in sewage was solved, the sewage treatment efficiency and equipment stability were improved, and the garbage cleaning process was simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI XUNXIANG CONSTR ENG CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-05
AI Technical Summary
Existing wastewater treatment equipment lacks pretreatment capabilities, which makes it easy for larger pieces of garbage and solid waste to accumulate and clog, affecting treatment efficiency.
A wastewater pretreatment device was designed, comprising a crushing roller, a filter tank, and a collection screen. The crushing roller crushes solid waste and debris in the wastewater, and the filter tank and collection screen separate the debris, thereby achieving wastewater pretreatment.
It effectively reduces the workload of subsequent sewage treatment, improves sewage treatment efficiency, ensures stable sewage flow, avoids blockage, and simplifies the cleaning of garbage and debris.
Smart Images
Figure CN224321111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater pretreatment device. Background Technology
[0002] Wastewater treatment refers to the process of purifying polluted water through physical, chemical, and biological methods to remove or reduce pollutants (such as suspended solids, organic matter, heavy metals, pathogens, etc.) and bring it up to specific water quality standards (such as discharge standards, reuse standards, etc.) in order to protect the water environment or achieve water resource recycling.
[0003] In the process of sewage treatment, sewage treatment equipment is mostly used to filter and purify sewage. However, most conventional sewage treatment equipment does not have the function of pretreatment and instead treats sewage directly. Since sewage contains some large garbage and solid waste, these debris can easily cause blockages in the sewage treatment equipment and affect the treatment efficiency. Therefore, this application proposes a pretreatment device that can crush and filter large garbage and solid waste in sewage to solve this problem. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wastewater pretreatment device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wastewater pretreatment device, comprising a treatment frame, a treatment chamber provided on one side of the top of the treatment frame, a fixing recess provided on the top of the treatment chamber, a sealing plate nested within the fixing recess, an inlet pipe provided on the sealing plate, two crushing rollers rotatably connected within the treatment chamber, a fixing box fixedly connected to the outside of the treatment frame, gears nested and fixedly connected to the central shafts of the two crushing rollers within the fixing box, the two gears meshing with each other, a motor fixedly connected to one side of the outer surface of the fixing box, and the output end of the motor being connected to... One of the crushing rollers is fixedly connected to the central shaft. A filter tank is provided inside the processing frame. A communication port communicating with the filter tank is provided on one side of the bottom wall of the processing chamber. A drain pipe is provided at the bottom of the filter tank. A collection mesh frame is nested inside the filter tank. A guide mesh frame is provided at the bottom middle position of the collection mesh frame. A sealing plate two nested in the filter tank is provided at the top of the processing frame. A positioning block is fixedly connected to the top of the processing frame. A positioning groove is provided on the sealing plate two that is nested and slidably engaged with the positioning block. A fixing block is fixedly connected to the top of the sealing plate two. A locking mechanism is provided between the fixing block and the positioning block.
[0006] As a further description of the above technical solution:
[0007] The bottom of the inner wall of the processing chamber is inclined downward from one side toward the connection port.
[0008] As a further description of the above technical solution:
[0009] The sealing plate is tightened and fixed to the top of the processing frame by multiple screws.
[0010] As a further description of the above technical solution:
[0011] The guide frame is conical in shape with a hemispherical top.
[0012] As a further description of the above technical solution:
[0013] The top of the collection frame is fixedly connected to a handle, and the bottom of the sealing plate is provided with a positioning notch that nests with the handle.
[0014] As a further description of the above technical solution:
[0015] The locking mechanism includes a locking groove on the positioning block and a through groove on the fixing block. A locking block that is nested and matched with the locking groove is slidably connected in the through groove. A movable plate is fixedly connected to one end of the locking block. A handle is fixedly connected to the movable plate. An inner groove is provided at the top of the inner wall of the through groove. A movable block is slidably connected in the inner groove. A spring is connected between one side of the inner wall of the inner groove and the outer surface of the movable block. The movable block is fixedly connected to the locking block.
[0016] As a further description of the above technical solution:
[0017] The positioning block, positioning groove, fixing block, and locking mechanism are provided in two sets and are located on both sides of the top of the sealing plate.
[0018] This utility model has the following beneficial effects:
[0019] This wastewater pretreatment device, through its inlet pipe, guides the wastewater to the treatment chamber. Combined with a motor, gears, and crushing rollers, it crushes solid waste and debris in the wastewater and guides it through a connecting port into a filter tank. There, the wastewater passes through a collection screen to filter out the debris. After filtration, the wastewater can be discharged through a drain pipe into subsequent wastewater treatment equipment. This completes the pretreatment of wastewater. The structure effectively crushes and separates larger and solid waste in the wastewater, thus reducing the burden on subsequent treatment processes. The wastewater treatment workload is reduced, improving wastewater treatment efficiency. The guide frame helps guide debris entering the collection frame, preventing it from accumulating around the frame and ensuring stable wastewater flow without blockage. This enhances the separation and filtration efficiency of wastewater and debris. The sealing plate, positioning blocks, positioning grooves, and locking mechanism not only stably seal the filter tank but also allow for easy disassembly and opening. This facilitates the removal of the collection frame for cleaning filtered debris. The structure is simple to assemble and disassemble, offering flexible and convenient use. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a wastewater pretreatment device proposed in this utility model;
[0021] Figure 2 This is a front view of a wastewater pretreatment device proposed in this utility model;
[0022] Figure 3 This utility model proposes a wastewater pretreatment device. Figure 2 Enlarged view of A in the middle;
[0023] Figure 4 This is a front view of the gear structure of a wastewater pretreatment device proposed in this utility model;
[0024] Figure 5 This is a schematic diagram of the collection mesh structure of a sewage pretreatment device proposed in this utility model.
[0025] Legend:
[0026] 1. Processing frame; 2. Processing chamber; 3. Fixing notch; 4. Sealing plate one; 5. Inlet pipe; 6. Crushing roller; 7. Fixing box; 8. Gear; 9. Motor; 10. Filter tank; 11. Connecting port; 12. Drain pipe; 13. Collection mesh frame; 14. Guide mesh frame; 15. Handle one; 16. Sealing plate two; 17. Positioning notch; 18. Positioning block; 19. Locking groove; 20. Positioning groove; 21. Fixing block; 22. Through groove; 23. Locking block; 24. Moving plate; 25. Handle two; 26. Inner groove; 27. Moving block; 28. Spring. Detailed Implementation
[0027] 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.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0029] Reference Figure 1-5 This utility model provides an embodiment of a wastewater pretreatment device, including a treatment frame 1. A treatment chamber 2 is provided on one side of the top of the treatment frame 1. A fixing recess 3 is provided on the top of the treatment chamber 2. A sealing plate 4 is nested inside the fixing recess 3. An inlet pipe 5 is provided on the sealing plate 4. Two crushing rollers 6 are rotatably connected inside the treatment chamber 2. The central axis of the crushing rollers 6 is positioned at the contact point with the inner wall of the treatment chamber 2 via bearings. Both crushing rollers 6 have interlocking teeth on their surfaces, which can crush larger waste and solid waste during relative rotation. (See attached...) Figure 2 As shown, the sealing plate 4 has a T-shaped cross-section and is fixed to the top of the processing frame 1 by multiple screws. This not only stably seals the top of the processing chamber 2 but also allows for easy disassembly and opening, facilitating the cleaning of the crushing rollers 6 inside the processing chamber 2. A fixing box 7 is fixedly connected to the outside of the processing frame 1. Gears 8 are nested and fixedly connected to the central shafts of the two crushing rollers 6 within the fixing box 7. The two gears 8 mesh with each other. A motor 9 is fixedly connected to one side of the outer surface of the fixing box 7. The output end of the motor 9 is fixedly connected to the central shaft of one of the crushing rollers 6, driving one of the crushing rollers 6 to rotate. Through the meshing of the two gears 8, the two crushing rollers 6 can move relative to each other, thus crushing the solid waste and debris in the sewage entering the processing chamber 2. A filter tank 10 is provided inside the processing frame 1, and the processing chamber 2... A connecting port 11, which communicates with the filter tank 10, is provided on one side of the bottom of the wall. The bottom of the inner wall of the treatment chamber 2 is inclined downward from one side towards the connecting port 11. This downward inclination allows the crushed waste to flow steadily through the connecting port 11 into the filter tank 10 along with the sewage flow for initial filtration. A drain pipe 12 is provided at the bottom of the inner wall of the filter tank 10. The bottom of the filter tank 10 is inclined downward from the side towards the drain pipe 12, allowing the filtered sewage to automatically collect at the drain pipe 12. The drain pipe 12 can connect to the inlet pipe of the sewage treatment equipment, thus guiding the pre-treated sewage into the subsequent sewage treatment process equipment for further treatment. A collection mesh frame 13 is nested inside the filter tank 10. A guide mesh frame 14 is provided at the bottom center of the collection mesh frame 13, as shown in the attached figure. Figure 5 As shown, the guide frame 14 is conical with a hemispherical top. Both the collection frame 13 and the guide frame 14 are mesh structures, which can filter garbage and debris in the sewage. The top of the collection frame 13 is lower than the connecting port 11, so that after the sewage carrying garbage and debris enters the filter tank 10, it can stably enter the collection frame 13 for filtration. The filtered garbage is guided by the guide frame 14 to accumulate at the bottom periphery of the collection frame 13. The spherical top of the guide frame 14 can cooperate with the impact of the sewage flow to prevent the filtered garbage from accumulating on its top. This ensures that the sewage can be filtered normally and that there will be no excessive accumulation of filtered garbage and debris, which would prevent the sewage from being filtered and discharged normally. This reduces the cleaning frequency and improves the working efficiency of the filter structure. The top of the collection frame 13 is fixedly connected to a handle 15. The handle 15 makes it easy to pull out the collection frame 13, which makes it easy to clean the filtered garbage and debris.
[0030] The top of the processing rack 1 is provided with a sealing plate 2 16 nested inside the filter tank 10, as shown in the attached figure. Figure 3As shown, the sealing plate 16 is T-shaped, which allows it to be stably positioned within the filter tank 10 for sealing. The bottom of the sealing plate 16 has a positioning recess 17 that nests with the handle 15. The positioning recess 17 positions the handle 15, thus ensuring stable positioning of the collection frame 13 and guaranteeing the stability of the filter structure, preventing it from floating due to water influence. A positioning block 18 is fixedly connected to the top of the treatment frame 1. The sealing plate 16 has a positioning groove 20 that nests and slides with the positioning block 18. A fixing block 21 is fixedly connected to the top of the sealing plate 16. A locking mechanism is provided between the fixing block 21 and the positioning block 18. Two sets of positioning blocks 18, positioning grooves 20, fixing blocks 21, and locking mechanisms are provided on both sides of the top of the sealing plate 16. The arrangement of these two sets of positioning blocks 18, positioning grooves 20, and locking mechanisms ensures the stability of the sealing plate 16 during installation.
[0031] The locking mechanism includes a locking groove 19 on the positioning block 18 and a through groove 22 on the fixing block 21. A locking block 23, which is nested and engaged with the locking groove 19, is slidably connected in the through groove 22. A movable plate 24 is fixedly connected to one end of the locking block 23, and a handle 25 is fixedly connected to the movable plate 24. An inner groove 26 is provided at the top of the inner wall of the through groove 22, and a movable block 27 is slidably connected in the inner groove 26. A spring 28 is connected between one side of the inner wall of the inner groove 26 and the outer surface of the movable block 27. The movable block 27 is fixedly connected to the locking block 23. During operation, the handle 25 is grasped and pulled horizontally. The locking block 23 retracts into the through groove 22. When the locking block 23 moves the moving block 27, it compresses the spring 28, installing the sealing plate 16 into the filter tank 10. This allows the positioning block 18 to pass through the positioning groove 20. After positioning, the handle 25 is released, the spring 28 returns to its original position, pushing the moving block 27 to its original position. The moving block 27 then moves the locking block 23 into the locking groove 19, thus completing the positioning and installation of the locking mechanism. This ensures that the sealing plate 16 is securely installed. Similarly, the sealing plate 16 can be easily disassembled and opened, making it convenient to remove the collection frame 13 for cleaning.
[0032] Working principle: When using the sewage pretreatment device, sewage enters the treatment chamber 2 through the inlet pipe 5. The motor 9 is started, and the motor 9 drives one of the crushing rollers 6 to rotate. Through the meshing of two gears 8, the two crushing rollers 6 can move relative to each other. The two crushing rollers 6 can crush larger garbage and solid garbage in the sewage entering the treatment chamber 2. After crushing, the garbage and debris follow the sewage flow and enter the filter tank 10 through the connecting port 11. After being filtered by the collection screen 13, the garbage and debris in the sewage can be filtered down. When it is necessary to clean the collection screen 13, open the locking mechanism, open the sealing plate 16, grab the handle 15, and pull out the collection screen 13 to easily dump the garbage and debris filtered down in the collection screen 13.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A wastewater pretreatment device, comprising a treatment rack (1), characterized in that: The processing rack (1) has a processing chamber (2) on one side of its top. The top of the processing chamber (2) has a fixing recess (3). A sealing plate (4) is nested inside the fixing recess (3). An inlet pipe (5) is provided on the sealing plate (4). Two crushing rollers (6) are rotatably connected inside the processing chamber (2). A fixing box (7) is fixedly connected to the outside of the processing rack (1). Gears (8) are nested and fixedly connected to the central shafts of the two crushing rollers (6) and located inside the fixing box (7). The two gears (8) are meshed with each other. A motor (9) is fixedly connected to one side of the outer surface of the fixing box (7). The output end of the motor (9) is fixedly connected to the central shaft of one of the crushing rollers (6). A filter tank (10) is provided inside the processing rack (1). The processing chamber (2) has a communication port (11) connected to the filter tank (10) on one side of the bottom of the inner wall. The filter tank (10) has a drain pipe (12) at the bottom of the inner wall. A collection mesh frame (13) is nested inside the filter tank (10). A guide mesh frame (14) is provided at the middle of the bottom of the collection mesh frame (13). A sealing plate (16) nested inside the filter tank (10) is provided on the top of the processing frame (1). A positioning block (18) is fixedly connected to the top of the processing frame (1). A positioning groove (20) is provided on the sealing plate (16) that is nested and slidably engaged with the positioning block (18). A fixing block (21) is fixedly connected to the top of the sealing plate (16). A locking mechanism is provided between the fixing block (21) and the positioning block (18).
2. The wastewater pretreatment device according to claim 1, characterized in that: The bottom of the inner wall of the processing chamber (2) is inclined downward from one side toward the communication port (11).
3. The wastewater pretreatment device according to claim 1, characterized in that: The sealing plate (4) is tightened and fixed to the top of the processing frame (1) by multiple screws.
4. The wastewater pretreatment device according to claim 1, characterized in that: The guide frame (14) is conical and its top is hemispherical.
5. A wastewater pretreatment device according to claim 1, characterized in that: The top of the collection frame (13) is fixedly connected to a handle (15), and the bottom of the sealing plate (16) is provided with a positioning notch (17) that nests and cooperates with the handle (15).
6. A wastewater pretreatment device according to claim 1, characterized in that: The locking mechanism includes a locking groove (19) on the positioning block (18) and a through groove (22) on the fixing block (21). A locking block (23) that is nested and cooperates with the locking groove (19) is slidably connected in the through groove (22). A movable plate (24) is fixedly connected to one end of the locking block (23). A handle (25) is fixedly connected to the movable plate (24). An inner groove (26) is provided at the top of the inner wall of the through groove (22). A movable block (27) is slidably connected in the inner groove (26). A spring (28) is connected between one side of the inner wall of the inner groove (26) and the outer surface of the movable block (27). The movable block (27) is fixedly connected to the locking block (23).
7. A wastewater pretreatment device according to claim 1, characterized in that: The positioning block (18), positioning groove (20), fixing block (21), and locking mechanism are provided in two sets and located on both sides of the top of the sealing plate (16).