Water treatment solid-liquid separation device
By designing a rotating separation component and a pressurized nozzle, the problem of screen clogging in water treatment devices has been solved, achieving automatic cleaning and efficient solid-liquid separation, and improving the operational stability and ease of maintenance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI GEWU ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-21
AI Technical Summary
In existing water treatment solid-liquid separation devices, the screw blades or filter screens become clogged and difficult to clean, leading to equipment downtime and affecting processing efficiency.
The device employs a rotating separation assembly and a pressurized nozzle design. Wastewater is filtered through the screen of the rotating separation assembly, while solid waste is rinsed off the surface of the screen using the pressurized nozzle. The solid waste is then discharged through an auger, achieving self-cleaning and preventing clogging.
It enables automatic cleaning of the screen, avoids clogging, improves water treatment efficiency and continuous operation capability, and simplifies the maintenance process.
Smart Images

Figure CN224524127U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, and in particular to a water treatment solid-liquid separation device. Background Technology
[0002] The initial stages of wastewater treatment typically employ solid-liquid separation devices to remove suspended solids, particulate matter, and some organic impurities from the wastewater, reducing the load on subsequent biological or chemical treatment units. Common solid-liquid separation equipment includes bar screens, grit chambers, primary sedimentation tanks, centrifuges, and filters. Bar screens are used to intercept larger floating objects, grit chambers separate sand and gravel through gravity settling, primary sedimentation tanks further remove settling solids, while centrifuges and filter presses are suitable for thickening and dewatering high-concentration sludge.
[0003] A search revealed that patent CN219804331U discloses a wastewater solid-liquid separation device for water treatment. It uses a filter plate to facilitate the separation of large solids, and the through holes on the screw blades facilitate solid-liquid separation. The separated solids are then spiraled into the solids tank, and a grate plate facilitates water control of the solids.
[0004] However, the above-mentioned device has the following drawbacks: because the screw blades are located inside the separation tank, once the holes on the screw blades become clogged, it becomes very difficult to clean them. Similar to current separation devices, once the filter screen becomes clogged, the machine needs to be stopped, and the clogged filter screen needs to be cleaned manually, thus affecting the efficiency of water treatment. Therefore, further improvements are needed. To this end, we propose a water treatment solid-liquid separation device. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a water treatment solid-liquid separation device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a water treatment solid-liquid separation device, comprising a water tank, a partition fixed at the bottom of the water tank, a drain outlet and a slag outlet respectively opened at the bottom of the water tank and on both sides of the partition, a rotatable rotating separation component provided inside the water tank and above the drain outlet, the rotating separation component including a shaft tube, multiple mesh plates fixed at equal intervals on the outer surface of the shaft tube, a reduction motor fixed on the outer wall of the water tank, the output shaft of the reduction motor fixedly connected to the shaft tube, a first horizontal tube passing through the shaft tube, a second horizontal tube fixed inside the water tank and above the rotating separation component, a plurality of nozzles fixed at equal intervals on the side walls of the first and second horizontal tubes, a water inlet pipe fixed on the side wall of the water tank and above the rotating separation component, and a filter plate horizontally arranged inside the water tank and below the rotating separation component.
[0007] Furthermore, a valve is installed in the middle of the water inlet pipe.
[0008] Furthermore, a booster pump is installed on the outer wall of the water tank. The first horizontal pipe and the second horizontal pipe are both connected to the outlet of the booster pump through pipes, and the inlet of the booster pump is connected to a tap water pipe.
[0009] Furthermore, the end of the shaft tube away from the geared motor is designed to be open, and the first horizontal tube passes through this opening and is located inside the shaft tube. The side wall of the shaft tube and near each mesh plate are provided with side openings, and the nozzles on the surface of the first horizontal tube face the side openings.
[0010] Furthermore, the nozzles on the surface of the second horizontal tube face the slag discharge port side.
[0011] Furthermore, a strip-shaped opening is provided on the side wall of the water tank near the filter plate. One end of the filter plate passes through the strip-shaped opening and is fixedly connected to an end plate. The end plate is fixedly connected to the outer side wall of the water tank by bolts.
[0012] Furthermore, a slag discharge pipe is fixedly connected to the bottom of the slag discharge port, and an auger is rotatably connected inside the slag discharge pipe. A drive motor is fixed to one end of the slag discharge pipe near the drain outlet, and the output end of the drive motor is fixedly connected to the auger.
[0013] The beneficial effects of this utility model are:
[0014] 1. In use, this utility model includes a water tank, a partition, a rotating separation component, a reduction motor, a first horizontal pipe, a second horizontal pipe, nozzles, a booster pump, and an inlet pipe. After the inlet pipe enters the water tank, the wastewater is filtered through the screen of the rotating separation component. The filtered water is discharged from the bottom drain outlet, while solid waste remains on the surface of the screen. The reduction motor drives the rotating separation component to rotate periodically. When the screen with solid waste on its surface rotates to the side of the partition, the solid waste on the surface is flushed to the slag discharge outlet through the nozzles on the first and second horizontal pipes. This device can automatically clean the screen, avoiding screen blockage that could affect water treatment efficiency.
[0015] 2. When using this utility model, a filter plate is set to filter the small amount of residual solid waste, further ensuring the solid-liquid separation effect. In addition, the filter plate can be directly pulled out from the side opening on the side of the water tank, which facilitates quick cleaning of the filter plate. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a perspective view of the entire utility model;
[0018] Figure 2 This is an overall sectional view of the present invention;
[0019] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;
[0020] Figure 4 For the present utility model Figure 2 Enlarged view of section B in the middle.
[0021] The attached figures are labeled as follows:
[0022] 1. Water tank; 2. Baffle plate; 3. Drain outlet; 4. Slag discharge outlet; 5. Rotary separation assembly; 51. Shaft tube; 52. Mesh plate; 53. Side outlet; 6. Gear motor; 7. First horizontal pipe; 8. Second horizontal pipe; 9. Nozzle; 10. Booster pump; 11. Water inlet pipe; 12. Valve; 13. Filter plate; 14. Strip outlet; 15. End plate; 16. Slag discharge pipe; 17. Screw conveyor; 18. Drive motor. Detailed Implementation
[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] like Figures 1-4 As shown, a water treatment solid-liquid separation device is disclosed, comprising a water tank 1, a partition 2 fixed at the bottom of the water tank 1, a drain outlet 3 and a slag outlet 4 respectively opened at the bottom of the water tank 1 and on both sides of the partition 2, a rotatable rotating separation component 5 is provided inside the water tank 1 and above the drain outlet 3, and the rotating separation component 5 includes a shaft tube 51, a plurality of mesh plates 52 are fixed at equal intervals on the outer surface of the shaft tube 51, a reduction motor 6 is fixed on the outer wall of the water tank 1, the output shaft of the reduction motor 6 is fixedly connected to the shaft tube 51, a first horizontal tube 7 passes through the shaft tube 51, a second horizontal tube 8 is fixed inside the water tank 1 and above the rotating separation component 5, a plurality of nozzles 9 are fixed at equal intervals on the side walls of the first horizontal tube 7 and the second horizontal tube 8, a water inlet pipe 11 is fixed on the side wall of the water tank 1 and above the rotating separation component 5, and a filter plate 13 is horizontally arranged inside the water tank 1 and below the rotating separation component 5.
[0025] A valve 12 is installed in the middle of the water inlet pipe 11.
[0026] By controlling the opening and closing of valve 12, wastewater to be treated can be injected into water tank 1 through inlet pipe 11.
[0027] A booster pump 10 is installed on the outer wall of the water tank 1. The first horizontal pipe 7 and the second horizontal pipe 8 are both connected to the outlet of the booster pump 10 through pipes. The inlet of the booster pump 10 is connected to the tap water pipe.
[0028] After being pressurized by the booster pump 10, the water is pumped into the first horizontal pipe 7 and the second horizontal pipe 8, and then sprayed out from the nozzle 9.
[0029] The end of the shaft tube 51 away from the geared motor 6 is open. The first horizontal tube 7 passes through the opening and is located inside the shaft tube 51. The side wall of the shaft tube 51 and near each mesh plate 52 are provided with side openings 53. The nozzles 9 on the surface of the first horizontal tube 7 face the side openings 53.
[0030] When the surface of the mesh plate 52 is covered with filtered solid waste, and the mesh plate 52 rotates to one side of the partition plate 2, the booster pump 10 is started, and the nozzle 9 on the surface of the first horizontal pipe 7 is used to rinse the surface of the mesh plate 52 from the side port 53, thereby flushing the solid waste on the surface of the mesh plate 52 to the side of the slag discharge port 4 for discharge.
[0031] The nozzles 9 on the surface of the second horizontal pipe 8 face the slag discharge port 4.
[0032] In addition to rinsing the screen plate 52 through the nozzles 9 on the surface of the first horizontal pipe 7, the solid waste on the surface of the screen plate 52 is also rinsed through the nozzles 9 on the surface of the second horizontal pipe 8.
[0033] A strip-shaped opening 14 is provided on the side wall of the water tank 1 near the filter plate 13. One end of the filter plate 13 passes through the strip-shaped opening 14 and is fixedly connected to an end plate 15. The end plate 15 is fixedly connected to the outer side wall of the water tank 1 by bolts.
[0034] The filter plate 13 is used to further intercept any small amount of solid waste that may remain in the wastewater. When a lot of solid waste remains on the surface of the filter plate 13 and needs to be cleaned, the end plate 15 is disassembled periodically and the filter plate 13 is pulled out from the slot 14 to facilitate rinsing of the surface of the filter plate 13.
[0035] A slag discharge pipe 16 is fixedly connected to the bottom of the slag discharge port 4. An auger 17 is rotatably connected inside the slag discharge pipe 16. A drive motor 18 is fixed to one end of the slag discharge pipe 16 near the drain port 3. The output end of the drive motor 18 is fixedly connected to the auger 17.
[0036] Solid waste discharged from slag discharge port 4 will enter slag discharge pipe 16. After the drive motor 18 is started to drive the screw conveyor 17 to rotate, the solid waste will be discharged from slag discharge pipe 16 by the screw conveyor 17.
[0037] Working principle: Opening valve 12 allows wastewater to enter the water tank 1 through inlet pipe 11. The wastewater is filtered by a mesh plate 52 located near the inlet pipe 11. The wastewater passes through the mesh plate 52 and falls onto the surface of filter plate 13. After secondary filtration by filter plate 13, it is discharged from drain outlet 3. When a significant amount of filtered solid waste accumulates on the surface of the mesh plate 52 located below the inlet pipe 11, valve 12 is closed, and the reduction motor 6 is started to rotate the shaft tube 51 by a specified angle, causing the mesh plate 52 containing solid waste to rotate to the side of partition plate 2 (e.g., ...). Figure 2 Then, valve 12 is opened and booster pump 10 is started. The nozzle 9 on the surface of the first horizontal pipe 7 is used to rinse the surface of the screen plate 52 from the side port 53, and the nozzle 9 on the surface of the second horizontal pipe 8 is used to rinse the screen plate 52. The washed-off solid waste falls into the slag discharge port 4 and finally enters the slag discharge pipe 16. The drive motor 18 is started to drive the screw conveyor 17 to rotate and discharge the solid waste.
[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A water treatment solid-liquid separation device, comprising a water tank (1), characterized in that: The bottom of the water tank (1) is fixed with a partition (2). The bottom of the water tank (1) and the sides of the partition (2) are respectively provided with a drain outlet (3) and a slag outlet (4). The water tank (1) is provided with a rotatable rotating separation assembly (5) above the drain outlet (3). The rotating separation assembly (5) includes a shaft tube (51). Multiple mesh plates (52) are fixed at equal intervals on the outer surface of the shaft tube (51). A reduction motor (6) is fixed on the outer wall of the water tank (1). The reduction motor (6) outputs... The shaft is fixedly connected to the shaft tube (51). A first horizontal tube (7) is inserted inside the shaft tube (51). A second horizontal tube (8) is fixed inside the water tank (1) and above the rotating separation assembly (5). Several nozzles (9) are fixed at equal distances on the side walls of the first horizontal tube (7) and the second horizontal tube (8). A water inlet pipe (11) is fixed on the side wall of the water tank (1) and above the rotating separation assembly (5). A filter plate (13) is horizontally arranged inside the water tank (1) and below the rotating separation assembly (5).
2. The water treatment solid-liquid separation device according to claim 1, characterized in that: A valve (12) is installed in the middle of the water inlet pipe (11).
3. The water treatment solid-liquid separation device according to claim 1, characterized in that: A booster pump (10) is installed on the outer wall of the water tank (1). The first horizontal pipe (7) and the second horizontal pipe (8) are both connected to the outlet of the booster pump (10) through pipes. The inlet of the booster pump (10) is connected to a tap water pipe.
4. The water treatment solid-liquid separation device according to claim 1, characterized in that: The end of the shaft tube (51) away from the geared motor (6) is open. The first horizontal tube (7) passes through the opening and is located inside the shaft tube (51). The side wall of the shaft tube (51) and near each mesh plate (52) are provided with side openings (53). The nozzles (9) on the surface of the first horizontal tube (7) face the side openings (53).
5. A water treatment solid-liquid separation device according to claim 1, characterized in that: The nozzle (9) on the surface of the second horizontal tube (8) faces the slag discharge port (4).
6. A water treatment solid-liquid separation device according to claim 1, characterized in that: The water tank (1) has a strip-shaped opening (14) on its side wall near the filter plate (13). One end of the filter plate (13) passes through the strip-shaped opening (14) and is fixedly connected to an end plate (15). The end plate (15) is fixedly connected to the outer side wall of the water tank (1) by bolts.
7. A water treatment solid-liquid separation device according to claim 1, characterized in that: The bottom of the slag discharge port (4) is fixedly connected to a slag discharge pipe (16), and an auger (17) is rotatably connected inside the slag discharge pipe (16). A drive motor (18) is fixed at one end of the slag discharge pipe (16) near the drain outlet (3), and the output end of the drive motor (18) is fixedly connected to the auger (17).