Sand-water separator for sewage treatment
By introducing a spiral pusher and filter screen assembly into the wastewater treatment device, combined with the cleaning mechanisms of solenoid valves and check valves, the problem of sand and gravel flowing out with wastewater is solved, achieving effective sand-water separation and preventing filter screen clogging, thus improving the wastewater treatment effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-07
AI Technical Summary
Existing sand-water separators lack effective filtration structures in wastewater treatment, causing sand and gravel to easily flow out with the wastewater, especially under conditions of high flow velocity or strong impact, which affects water purity and resource recycling.
A sand-water separator was designed, comprising a rectangular shell, a spiral pusher rod, a first filter screen, and a cleaning component. The spiral pusher rod rotates to push sand and gravel out of the discharge component, and the first filter screen is periodically impacted by the cooperation of a solenoid valve and a check valve to remove stuck sand and gravel.
It achieves effective separation of sand and wastewater, ensuring wastewater quality, and prevents filter clogging through regular cleaning measures, thereby improving water treatment efficiency and the reliability of resource recovery.
Smart Images
Figure CN224086191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, specifically to a sand-water separator for wastewater treatment. Background Technology
[0002] Wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming a part of the daily lives of ordinary people.
[0003] The main functions of sand separators in wastewater treatment include removing solid particulate matter from wastewater, improving water purity, protecting the environment, and facilitating water resource recycling. However, existing sand separators lack a filtration structure, allowing sand and gravel in the wastewater to settle on their own. After settling, the sand and gravel are pushed out by a five-axis screw rod, while the wastewater overflows the outlet weir and flows out. In cases where the wastewater flow rate is high or the impact force of the wastewater falling into the tank is large, the settled sand and gravel may float up and overflow the outlet weir along with the wastewater. Therefore, a sand separator for wastewater treatment is proposed. Wastewater containing sand and gravel flows into a rectangular shell, passes through a first filter screen, falls into a protective box, and flows out, while the sand and gravel are pushed out of the discharge assembly by a rotating screw pusher, preventing the sand and gravel from flowing out with the wastewater. Summary of the Invention
[0004] To address the problems in the existing technology, this utility model provides a sand-water separator for sewage treatment. Sewage containing sand and gravel flows into the rectangular shell, and the sewage falls into the protective box and flows out after passing through the first filter screen. Meanwhile, the sand and gravel are pushed out of the discharge component by the rotating spiral pusher rod, and the sand and gravel will not flow out with the sewage.
[0005] The technical solution adopted by this utility model to solve its technical problem is a sand-water separator for sewage treatment, including a rectangular shell and a solenoid valve. A circular groove is opened inside the rectangular shell, and a spiral push rod is rotatably connected inside the circular groove through a bearing. A protective box is fixed to the bottom of the rectangular shell by bolts, and a first filter screen is fixed between the protective box and the rectangular shell by bolts.
[0006] The protective box is equipped with a cleaning component, which includes a U-shaped water pipe installed inside the protective box via a mounting bracket. One-way valves are connected to the top of the U-shaped water pipe at equal intervals via threaded grooves.
[0007] By adopting the above technical solution, the first filter screen filters the sand-containing wastewater flowing into the circular trough, separating the sand and wastewater. Compressed air flows into the U-shaped water pipe and is sprayed out through the one-way valve, which can flush out the sand stuck in the holes of the first filter screen.
[0008] Specifically, a connecting pipe is welded to one end of the U-shaped water pipe, and a solenoid valve is connected to the end of the connecting pipe located outside the protective box via a threaded groove.
[0009] Specifically, a timer switch is installed on one side of the protective box via a mounting base. The current output terminal of the timer switch is electrically connected to the current input terminal of the solenoid valve via a power cord. A drain pipe is connected to one end of the protective box via a threaded groove.
[0010] Specifically, a discharge assembly is provided at one bottom end of the rectangular housing. The discharge assembly includes a discharge pipe fixed to the bottom of the rectangular housing by a flange. A second filter screen is fixed inside the discharge pipe by bolts. A discharge pipe is welded to one side of the discharge pipe located at the top of the second filter screen.
[0011] Specifically, a feed pipe is fixed to the top of the rectangular housing via a flange, and a valve is connected to the top of the feed pipe via a threaded groove.
[0012] Specifically, a geared motor is mounted on one end of the rectangular housing via a mounting bracket, and the output shaft of the geared motor is fixedly connected to one end of the spiral push rod via a connecting sleeve.
[0013] The beneficial effects of this utility model are:
[0014] The present invention discloses a sand-water separator for sewage treatment. After the sand-containing sewage enters the circular tank, it is filtered by the first filter screen. The sewage flows through the first filter screen into the protective box and flows out from the sewage pipe. The geared motor is turned on to drive the spiral pusher to rotate. The rotation of the spiral pusher pushes the sand on the first filter screen to move and flow out from the discharge component.
[0015] The present invention discloses a sand-water separator for sewage treatment. A timer switch controls the solenoid valve to work at a set time. After the solenoid valve is opened, compressed air flows through the connecting pipe into the U-shaped water pipe and is sprayed out through multiple one-way valves. This can impact the first filter screen and flush out the sand and gravel stuck in the holes of the first filter screen, thus avoiding affecting the filtration of the first filter screen. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the rectangular shell and protective box of this utility model;
[0019] Figure 3 This is a schematic diagram of the cleaning component structure of this utility model;
[0020] Figure 4This is a schematic diagram of the material discharge component structure of this utility model;
[0021] In the diagram: 1. Rectangular shell; 101. Circular groove; 2. Protective box; 3. Spiral pusher rod; 4. First filter screen; 5. Cleaning assembly; 501. U-shaped water pipe; 502. One-way valve; 503. Connecting pipe; 504. Solenoid valve; 6. Discharge assembly; 601. Feed pipe; 602. Second filter screen; 603. Discharge pipe; 7. Gear motor; 8. Timer switch; 9. Feed pipe; 10. Valve; 11. Drain pipe. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] Wastewater containing sand and gravel flows into the rectangular shell. The wastewater passes through the first filter screen, falls into the protective box, and then flows out. The sand and gravel are propelled out of the discharge assembly by the rotating auger pusher; they do not flow out with the wastewater. Figure 1-4 As shown, the present invention provides a sand-water separator for sewage treatment, comprising a rectangular shell 1 and a solenoid valve 504. The rectangular shell 1 has a circular groove 101 inside, and a spiral push rod 3 is rotatably connected inside the circular groove 101 via a bearing. A protective box 2 is fixed to the bottom of the rectangular shell 1 by bolts, and a first filter screen 4 is fixed between the protective box 2 and the rectangular shell 1 by bolts.
[0024] The protective box 2 is equipped with a cleaning component 5. The cleaning component 5 includes a U-shaped water pipe 501 installed inside the protective box 2 via a mounting bracket. The top of the U-shaped water pipe 501 is connected to a one-way valve 502 at equal intervals via threaded grooves.
[0025] In use, the first filter screen 4 filters the sand-containing wastewater flowing into the circular trough 101, separating the sand and wastewater. Compressed air flows into the U-shaped water pipe 501 and is sprayed out through the one-way valve 502, which can flush out the sand stuck in the holes of the first filter screen 4.
[0026] For example, such as Figure 3 As shown, the present invention also includes a connecting pipe 503 welded to one end of the U-shaped water pipe 501, and a solenoid valve 504 connected to the end of the connecting pipe 503 located outside the protective box 2 through a threaded groove.
[0027] When in use, open the solenoid valve 504 to allow external compressed air to flow through the connecting pipe 503 into the U-shaped water pipe 501.
[0028] For example, such as Figure 1 , Figure 2As shown, this utility model also includes a timer switch 8 installed on one side of the protective box 2 via a mounting base. The current output terminal of the timer switch 8 is electrically connected to the current input terminal of the solenoid valve 504 via a power cord. A drain pipe 11 is connected to one end of the protective box 2 via a threaded groove.
[0029] During use, the solenoid valve 504 can be controlled to work at a time by the timer switch 8, and the filtered sewage flowing into the protective box 2 is discharged through the drain pipe 11.
[0030] For example, such as Figure 4 As shown, the present invention also includes a discharge assembly 6 provided at one bottom end of the rectangular housing 1. The discharge assembly 6 includes a discharge pipe 601 fixed to the bottom of the rectangular housing 1 by a flange. A second filter screen 602 is fixed inside the discharge pipe 601 by bolts. A discharge pipe 603 is welded to one side of the discharge pipe 601 located at the top of the second filter screen 602.
[0031] During use, the sand and gravel flow into the feed pipe 601 and fall onto the second filter screen 602, and then flow out through the discharge pipe 603.
[0032] For example, such as Figure 1 As shown, the present invention also includes a feed pipe 9 fixed to the top of the rectangular housing 1 by a flange, and a valve 10 connected to the top of the feed pipe 9 by a threaded groove.
[0033] When in use, open valve 10 to allow the sand-containing wastewater to flow through feed pipe 9 into circular trough 101.
[0034] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a geared motor 7 mounted on one end of the rectangular housing 1 via a mounting bracket, and the output shaft of the geared motor 7 is fixedly connected to one end of the spiral push rod 3 via a connecting sleeve.
[0035] In use, the geared motor 7 works to drive the spiral pusher rod 3 to rotate.
[0036] When using this utility model, the personnel connect the device to an external power source using a power cord, connect the solenoid valve 504 to an external air supply device using an air pipe, and open the valve 10 to allow the sand-containing wastewater to flow into the circular trough 101 through the feed pipe 9.
[0037] After the wastewater containing sand and gravel enters the circular tank 101, it is filtered by the first filter screen 4. The wastewater flows through the first filter screen 4 into the protective box 2 and flows out from the drain pipe 11. The geared motor 7 is turned on to drive the spiral pusher rod 3 to rotate. The rotation of the spiral pusher rod 3 pushes the sand and gravel on the first filter screen 4 to move and flow out from the discharge component 6.
[0038] The sand and gravel flow into the discharge pipe 601 and fall onto the second filter screen 602, and then flow out through the discharge pipe 603. The second filter screen 602 is set to support the sand and gravel, and at the same time, it can discharge the sewage flowing into the discharge pipe 601.
[0039] The timer switch 8 controls the solenoid valve 504 to work at a set time. After the solenoid valve 504 is opened, compressed air flows through the connecting pipe 503 into the U-shaped water pipe 501 and is sprayed out through multiple one-way valves 502. This can impact the first filter screen 4 and flush out the sand and gravel stuck in the holes of the first filter screen 4, thus avoiding affecting the filtration of the first filter screen 4.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sand-water separator for wastewater treatment, characterized in that, Includes a rectangular housing (1) and a solenoid valve (504). The rectangular housing (1) has a circular groove (101) inside. A spiral push rod (3) is rotatably connected inside the circular groove (101) via a bearing. A protective box (2) is fixed to the bottom of the rectangular housing (1) by bolts. A first filter screen (4) is fixed between the protective box (2) and the rectangular housing (1) by bolts. The protective box (2) is equipped with a cleaning component (5), which includes a U-shaped water pipe (501) installed inside the protective box (2) by a mounting bracket. The top of the U-shaped water pipe (501) is connected to a one-way valve (502) at equal intervals by a threaded groove.
2. A sand-water separator for wastewater treatment according to claim 1, characterized in that, The U-shaped water pipe (501) has a connecting pipe (503) welded to one end, and the connecting pipe (503) located outside the protective box (2) has a solenoid valve (504) connected to the other end through a threaded groove.
3. A sand-water separator for wastewater treatment according to claim 1, characterized in that, A timer switch (8) is installed on one side of the protective box (2) via a mounting base. The current output terminal of the timer switch (8) is electrically connected to the current input terminal of the solenoid valve (504) via a power line. A drain pipe (11) is connected to one end of the protective box (2) via a threaded groove.
4. A sand-water separator for wastewater treatment according to claim 1, characterized in that, The rectangular housing (1) is provided with a discharge assembly (6) at one end of the bottom. The discharge assembly (6) includes a discharge pipe (601) fixed to the bottom of the rectangular housing (1) by a flange. A second filter screen (602) is fixed inside the discharge pipe (601) by bolts. A discharge pipe (603) is welded to the side of the discharge pipe (601) located on the top of the second filter screen (602).
5. A sand-water separator for wastewater treatment according to claim 1, characterized in that, The top of the rectangular housing (1) is fixed with a feed pipe (9) by a flange, and the top of the feed pipe (9) is connected with a valve (10) by a threaded groove.
6. A sand-water separator for wastewater treatment according to claim 1, characterized in that, The rectangular housing (1) has a geared motor (7) mounted on one end via a mounting bracket. The output shaft of the geared motor (7) is fixedly connected to one end of the spiral push rod (3) via a connecting sleeve.