Separation equipment for domestic sewage pretreatment
By designing multi-layer filtration and sedimentation components, the problems of poor filtration effect and limited impurity handling in traditional domestic sewage pretreatment equipment are solved, achieving efficient sewage purification and impurity treatment, and improving the working efficiency and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-12
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional domestic sewage pretreatment equipment has limited filtration efficiency, especially for small particulate impurities, and the treatment of filtered impurities is also limited.
The system employs a multi-layered filtration and sedimentation system. The filtration system separates large particles of impurities, while the sedimentation system settles small particles. The impurities are collected and transported away through a detachable filter grid and a precisely controlled valve. Combined with a slag discharge system, this achieves efficient impurity treatment.
It significantly improved the wastewater filtration effect, increased work efficiency, reduced maintenance costs, extended equipment lifespan, and optimized the impurity treatment process.
Smart Images

Figure CN224071441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and more specifically to a separation device for the pretreatment of domestic sewage. Background Technology
[0002] Separation equipment for domestic sewage pretreatment is used in the early stages of sewage treatment to remove larger solids, suspended solids, and grease from sewage. This equipment is an important component to ensure the effective operation of subsequent treatment processes. Traditional separation equipment for domestic sewage pretreatment has limited filtration efficiency and is not effective in treating small particulate impurities. At the same time, it has limitations in the treatment of impurities after filtration.
[0003] In view of the above-mentioned problems in the prior art, this utility model proposes a separation device for the pretreatment of domestic sewage. It separates large and small particulate impurities through multi-layer filtration, collects the separated impurities, and then transfers the impurities through an extrusion device for unified treatment. This can effectively improve work efficiency and save resources and costs. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a separation device for the pretreatment of domestic sewage, so as to solve the problems of poor separation effect and limited impurity treatment in the prior art.
[0005] This utility model provides the following technical solution: a separation device for pretreatment of domestic sewage, including a filter assembly, a sedimentation assembly at one end of the filter assembly, a collection assembly at the bottom of the filter assembly, a sludge discharge assembly connected to the bottom of the collection assembly, the filter assembly including a filter box, a filter grid, a pin, a push plate, a push rod and a water supply pipe, the filter grid is movably arranged inside the filter box, the pin movably penetrates the side wall of the filter box and is movably inserted into the socket on the end face of the filter grid, the push plate is movably placed inside the filter box, and a sliding groove is provided at the end of the filter box near the push rod, the top of the push plate passes through the sliding groove on one side of the filter box and is fixedly connected to the push rod;
[0006] Preferably, the filter assembly further includes a sealing cover, a connecting column, and a hose. The top of the filter box is equipped with a sealing cover, the top of the sealing cover is movably connected to the hose, and the bottom of the sealing cover is fixedly installed with a connecting column. The connecting column is movably inserted into the filter box through a slot provided on the top end face of the filter box. An opening is provided on one side of the filter box and is fixedly connected to a water supply pipe. A groove is provided at the bottom of the filter box near the water supply pipe.
[0007] Preferably, the sedimentation assembly includes a sedimentation tank, a flow stabilizing plate, a support frame, a sliding block, a brush, and a drain pipe. The support frame is fixedly installed at the bottom of the sedimentation tank. A flow stabilizing plate is fixedly installed at the bottom of the sedimentation tank near the drain pipe, and an opening is provided at the other end of the bottom of the sedimentation tank. Sliding grooves are provided on both end faces of the sedimentation tank. The sliding block is slidably connected to the sedimentation tank through the sliding grooves. The brush is detachably installed inside the sliding block. An opening is provided at the end of the sedimentation tank near the brush and is movably connected to the drain pipe.
[0008] Preferably, the collection assembly includes a first slag hopper, a first valve, a second slag hopper, and a second valve. The first slag hopper has an opening at its top, which is movably connected to a slot at the bottom of the filter box. The first valve is fixedly installed on the side wall of the first slag hopper. The second slag hopper has an opening at its top, which is movably connected to an opening at the bottom of the sedimentation tank. The second valve is fixedly installed on the side wall of the second slag hopper.
[0009] Preferably, the slag discharge assembly includes a slag discharge cylinder, a protective shell, a motor, a transmission rod, a screw, and a slag discharge port. The slag discharge cylinder has an internal cavity, in which the screw is placed. The motor is movably installed inside the protective shell. The output shaft of the motor is connected to the transmission rod via a coupling. One end of the transmission rod passes through the slag discharge cylinder and is fixedly connected to the screw. The bottom of the end of the slag discharge cylinder away from the transmission rod has an opening and is fixedly connected to the slag discharge port.
[0010] The technical effects and advantages of this utility model are as follows:
[0011] 1. This utility model utilizes the synergistic operation of a filtration component and a sedimentation component to perform multi-stage filtration treatment on incoming wastewater, effectively separating and intercepting large particulate impurities. Simultaneously, the sedimentation component performs secondary purification on the water treated by the filtration component, causing small particulate impurities to settle in the sedimentation tank, thereby further improving the filtration effect and increasing overall work efficiency.
[0012] 2. This utility model features a detachable filter grid, which allows for quick disassembly, replacement, and cleaning via pins, helping to reduce maintenance costs and improve resource utilization efficiency. Furthermore, through precise control of the first and second valves, impurities can be collected in the first and second slag collection hoppers, thereby optimizing the impurity treatment process and improving processing efficiency.
[0013] 3. The slag discharge assembly of this utility model, through its integrated design, can smoothly transport impurities from the collection assembly. Driven by the screw, the impurities are discharged through the slag discharge port, effectively preventing the long-term accumulation of impurities, significantly enhancing the continuous working capacity of the equipment, and extending its service life. Attached Figure Description
[0014] Figure 1This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model.
[0016] Figure 3 This is a cross-sectional structural diagram of the filter component of this utility model.
[0017] Figure 4 This is a schematic diagram of the settling component structure of this utility model.
[0018] Figure 5 This is a schematic diagram of the settling component A of this utility model.
[0019] Figure 6 This is a cross-sectional structural diagram of the collection component and slag discharge component of this utility model.
[0020] The attached figures are labeled as follows: 1. Filter assembly; 101. Filter box; 102. Sealing cover; 103. Connecting column; 104. Filter grid; 105. Pin; 106. Push plate; 107. Push rod; 108. Hose; 109. Water supply pipe; 2. Sedimentation assembly; 201. Sedimentation tank; 202. Flow stabilizer plate; 203. Support frame; 204. Sliding block; 205. Brush; 206. Drainage pipe; 3. Collection assembly; 301. First slag hopper; 302. First valve; 303. Second slag hopper; 304. Second valve; 4. Slag discharge assembly; 401. Slag discharge cylinder; 402. Protective shell; 403. Motor; 404. Transmission rod; 405. Screw; 406. Slag discharge port. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The separation equipment for pretreatment of domestic sewage involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Reference Figure 1 This utility model provides a separation device for the pretreatment of domestic sewage, including a filter component 1, a sedimentation component 2 at one end of the filter component 1, and a collection component 3 at the bottom of the filter component 1. The bottom of the collection component 3 is connected to a sludge discharge component 4. Based on the above basic structure, this utility model can meet basic working needs. Furthermore, in order to achieve specific technical effects, the following structures are also needed.
[0023] Specifically, combined Figure 1 , Figure 2 and Figure 3 As shown, this utility model also discloses the technical structure of the filter assembly 1. The filter assembly 1 includes a filter box 101, a sealing cover 102, a connecting post 103, a filter grid 104, a pin 105, a push plate 106, a push rod 107, a hose 108, and a water supply pipe 109. The sealing cover 102 is fastened to the top of the filter box 101, and the top of the sealing cover 102 is sleeved with the hose 108. The connecting post 103 is fixedly installed at the bottom of the sealing cover 102. The connecting post 103 is movably inserted into the filter box 101 through a slot provided on the top end face of the filter box 101. The filter box 101 is equipped with a filter grid 104. The pin 105 passes through the side wall of the filter box 101 and is movably inserted into the socket on the end face of the filter grid 104. The filter box 101 is equipped with a push plate 106. The filter box 101 is provided with a groove at one end near the push rod 107. The top of the push plate 106 passes through the groove on one side of the filter box 101 and is fixedly connected to the push rod 107. The filter box 101 is provided with an opening on one side and is fixedly connected to the water supply pipe 109. The bottom of the filter box 101 is provided with a slot at one end near the water supply pipe 109.
[0024] The technical purpose of the above design is to filter the incoming sewage by setting up a filter grid 104 to separate and intercept large particulate impurities. At the same time, with the cooperation of the pin 105, the filter grid 104 can be easily disassembled, replaced and cleaned. The above structure, while ensuring the working effect, also appropriately reduces the maintenance requirements of the equipment, which is conducive to the maintenance personnel to maintain the equipment reasonably and update the structure that needs to be replaced, so that the equipment can meet the needs of longer working hours.
[0025] Furthermore, in combination Figure 1 , Figure 4 and Figure 5As shown, the settling assembly 2 includes a settling tank 201, a flow stabilizer 202, a support frame 203, a sliding block 204, a brush 205, and a drain pipe 206. The support frame 203 is fixedly installed at the bottom of the settling tank 201. A flow stabilizer 202 is fixedly installed at the bottom of the settling tank 201 near the drain pipe 206, and an opening is provided at the other end of the bottom of the settling tank 201. Sliding grooves are provided on both end faces of the settling tank 201. The sliding block 204 is slidably connected to the settling tank 201 through the sliding grooves. The brush 205 is detachably installed inside the sliding block 204. 01 An opening is provided at one end near the brush 205 and is movably connected to the drain pipe 206. The purpose of this design is to perform secondary purification on the water treated by the filter component 1 through the coordinated work of the sedimentation component 2, so that the tiny particulate impurities are settled in the sedimentation tank 201, thereby further improving the filtration effect and making the treatment of impurities show a clear hierarchy. This not only helps to remove dirt more thoroughly, but also makes it easier to reasonably control the process. The sedimentation structure 2 is simple in composition, so if a problem occurs in a certain link, the maintenance personnel can quickly locate the problem and accurately eliminate it.
[0026] Furthermore, in combination Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the collection assembly 3 includes a first slag hopper 301, a first valve 302, a second slag hopper 303, and a second valve 304. The first slag hopper 301 has an opening at its top and is detachably connected to a slot at the bottom of the filter box 101. The first valve 302 is fixedly installed on the side wall of the first slag hopper 301. The second slag hopper 303 has an opening at its top, and this opening is detachably connected to an opening at the bottom of the sedimentation tank 201. The second valve 304 is fixedly installed on the side wall of the second slag hopper 303. The purpose of this design is to prevent wastewater from entering during normal operation by controlling the first valve 302 and the second valve 304. When it is necessary to discharge the separated impurities, the push plate 106 and the brush 205 can work together to concentrate the impurities into the first slag hopper 301 and the second slag hopper 303 for discharge. This design can effectively improve the time and efficiency of impurity treatment.
[0027] Furthermore, in combination Figure 1 and Figure 6As shown, the slag discharge assembly 4 includes a slag discharge cylinder 401, a protective shell 402, a motor 403, a transmission rod 404, a screw 405, and a slag discharge port 406. The slag discharge cylinder 401 has an internal cavity, in which the screw 405 is placed. The motor 403 is movably installed inside the protective shell 402. The output shaft of the motor 403 is connected to the transmission rod 404 via a coupling. One end of the transmission rod 404 passes through the slag discharge cylinder 401 and is fixedly connected to the screw 405. The bottom of the end of the slag discharge cylinder 401 away from the transmission rod 404 has an opening and is fixedly connected to the slag discharge port 406. The purpose of the above design is to transport the impurities conveyed by the collection assembly 3 externally through the coordinated operation of the slag discharge assembly 4. Driven by the screw 405, the impurities can be smoothly discharged through the slag discharge port 406, thereby avoiding the long-term accumulation of impurities, effectively improving the continuous working capacity of the equipment and extending its service life.
[0028] The working principle of this utility model can be understood by referring to the following flowchart:
[0029] This product should be correctly installed in the working environment. After confirming that everything is correct, wastewater treatment personnel should connect the hose 108 to the sewage discharge pipe that needs treatment. When the sewage flows into the equipment, it will undergo preliminary filtration through the filter screen 104 to separate larger impurities and particulate matter. For equipment maintenance, the plug 105 provided in this invention allows wastewater treatment personnel to easily disassemble the filter screen 104 for cleaning and replacement. Next, the pre-filtered sewage will flow into the sedimentation tank 201 through the water supply pipe 109.
[0030] Within the settling tank 201, the wastewater forms a stratified structure due to the presence of the flow stabilizer 202, with the water level further away from the flow stabilizer 202 being lower than that at the flow stabilizer 202. When the water flow impacts the flow stabilizer 202, it rebounds, effectively slowing down the water flow velocity. This process allows smaller particles and impurities to settle at the bottom of the settling tank 201, further separating impurities from the wastewater. Subsequently, the separated wastewater is discharged through the drain pipe 206.
[0031] When filtered impurities need to be processed, external force can be applied to the push rod 107 inside the filter box 101 to move it. The push plate 106 will push the impurities inside the filter box 101 towards the slot. Similarly, the sliding block 204 inside the settling tank 201 can also push the internal impurities towards the slot. These impurities are then collected in the first slag hopper 301 and the second slag hopper 303. By operating the first valve 302 and the second valve 304 (this operation can be precisely controlled and monitored in real time by connecting controllable electronic actuators and compatible electronic control panels), these impurities can flow into the slag discharge cylinder 401. At this time, the coupling of the motor 403 will drive the transmission rod 404 to rotate, which in turn causes the screw 405 to rotate coaxially, pushing the flowing impurities forward. Finally, the pushed impurities will be discharged from the slag discharge port 406. This process effectively reduces impurity accumulation and improves processing efficiency.
[0032] The above-mentioned technical structure reflects the compact and reasonable structural design of this utility model. The connection between each component is stable and reliable, ensuring that the equipment will not shake or leak during operation, thereby improving the stability and safety of the equipment. The sedimentation component 2, through the setting of the flow stabilizing plate 202, effectively slows down the water flow speed, allowing small particulate impurities to settle fully, further improving the purification effect. The combined use of the sliding block 204 and the brush 205 facilitates the cleaning of the inner wall of the sedimentation tank 201 and prevents impurities from adhering and causing blockage.
[0033] In terms of daily maintenance and upkeep, this utility model also demonstrates great convenience. The detachable design of its filter grid 104 allows maintenance personnel to easily clean and replace it, reducing maintenance costs. In addition, the precise control of the first valve 302 and the second valve 304 further optimizes the impurity treatment process and improves treatment efficiency. In summary, the separation equipment for pretreatment of domestic sewage provided by this utility model has reasonable and obvious advantages such as good filtration effect, optimized impurity treatment process, high equipment stability, convenient maintenance and upkeep, and environmental protection and energy saving.
[0034] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. The accompanying drawings of the embodiments disclosed in this utility model only involve structures relevant to the embodiments disclosed in this utility model; other structures can refer to common designs. Where there is no conflict, the same embodiment and different embodiments of this utility model can be combined with each other. The above descriptions are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A separation device for pretreatment of domestic sewage, comprising a filter assembly (1), characterized in that: The filter assembly (1) is provided with a settling component (2) at one end, and a collection component (3) is placed at the bottom of the filter assembly (1). The bottom of the collection component (3) is connected to a slag discharge component (4). The filter assembly (1) includes a filter box (101), a filter grid (104), a pin (105), a push plate (106), a push rod (107), and a water supply pipe (109). The filter grid (104) is movably arranged inside the filter box (101). The pin (105) movably penetrates the side wall of the filter box (101) and is movably inserted into the socket on the end face of the filter grid (104). The push plate (106) is movably placed inside the filter box (101), and a sliding groove is provided at one end of the filter box (101) near the push rod (107). The top of the push plate (106) penetrates the sliding groove on one side of the filter box (101) and is fixedly connected to the push rod (107).
2. The separation device for pretreatment of domestic sewage according to claim 1, characterized in that: The filter assembly (1) also includes a sealing cover (102), a connecting column (103), and a hose (108). The top of the filter box (101) is equipped with a sealing cover (102), and the top of the sealing cover (102) is movably connected to the hose (108). The bottom of the sealing cover (102) is fixedly installed with a connecting column (103). The connecting column (103) is movably inserted into the filter box (101) through a slot provided on the top end face of the filter box (101). The filter box (101) has an opening on one side and is fixedly connected to the water supply pipe (109). The bottom of the filter box (101) near the end of the water supply pipe (109) is provided with a groove.
3. The separation device for pretreatment of domestic sewage according to claim 1, characterized in that: The settling assembly (2) includes a settling tank (201), a flow stabilizer (202), a support frame (203), a sliding block (204), a brush (205), and a drain pipe (206). The support frame (203) is fixedly installed at the bottom of the settling tank (201). The flow stabilizer (202) is fixedly installed at the bottom of one end of the settling tank (201) near the drain pipe (206). An opening is provided at the other end of the bottom of the settling tank (201). Sliding grooves are provided on both sides of the settling tank (201). The sliding block (204) is slidably connected to the settling tank (201) through the sliding groove. The brush (205) is detachably installed inside the sliding block (204). An opening is provided at one end of the settling tank (201) near the brush (205) and is movably connected to the drain pipe (206).
4. A separation device for pretreatment of domestic sewage according to claim 1, characterized in that: The collection assembly (3) includes a first slag hopper (301), a first valve (302), a second slag hopper (303), and a second valve (304). The first slag hopper (301) has an opening at the top and is movably connected to the slot at the bottom of the filter box (101). The first valve (302) is fixedly installed on the side wall of the first slag hopper (301). The second slag hopper (303) has an opening at the top and is movably connected to the opening at the bottom of the sedimentation tank (201). The second valve (304) is fixedly installed on the side wall of the second slag hopper (303).
5. A separation device for pretreatment of domestic sewage according to claim 1, characterized in that: The slag discharge assembly (4) includes a slag discharge cylinder (401), a protective shell (402), a motor (403), a transmission rod (404), a screw (405), and a slag discharge port (406). The slag discharge cylinder (401) has a cavity inside, and the screw (405) is placed inside the cavity. The motor (403) is movably installed inside the protective shell (402). The output shaft of the motor (403) is connected to the transmission rod (404) through a coupling. One end of the transmission rod (404) passes through the slag discharge cylinder (401) and is fixedly connected to the screw (405). The bottom of the end of the slag discharge cylinder (401) away from the transmission rod (404) has an opening and is fixedly connected to the slag discharge port (406).