Efficient multi-stage inclined plate sedimentation tank for wastewater

Abstract

The utility model relates to walnut processing wastewater treatment equipment technical field, concretely relates to a kind of wastewater efficient multistage inclined plate sedimentation tank, including sedimentation tank main body, the bottom of sedimentation tank main body is fixedly installed with conical pool body, the bottom end of conical pool body is fixedly installed with blow-off pipe, blow-off valve is fixedly installed on blow-off pipe, the inner wall of sedimentation tank main body is fixedly installed with multiple first inclined plate, the pool body on the side of sedimentation tank main body is fixedly installed with inlet pipe, the pool body on the other side of sedimentation tank main body is fixedly installed with water outlet cover near top position, the sedimentation tank main body inside near water outlet cover side is also installed with multiple second inclined plate, first inclined plate is composed of inclined section, first vertical section and second vertical section, first vertical section is located in the side near conical pool body, second vertical section is located in the side near the top of sedimentation tank main body. The utility model has good sedimentation effect, and it is convenient to carry out wastewater treatment and discharge operation of impurity.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment equipment for walnut processing, specifically to a high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment. Background Technology

[0002] Walnut processing operations, such as the initial washing and shelling processes, generate a large amount of wastewater. This wastewater contains impurities, walnut shell fragments, pulp residue, and other pollutants. If discharged directly or not treated thoroughly, it will not only clog municipal pipe networks but also cause serious water pollution. Pre-sedimentation is the core step in walnut processing wastewater treatment, and its effectiveness directly determines the load and operational stability of the subsequent biological treatment system. Wastewater sedimentation is usually carried out in a corresponding sedimentation tank.

[0003] Utility model patent CN211863974U discloses a multi-stage inclined plate sedimentation tank, relating to the field of sedimentation tank technology. It addresses the problem of current multi-stage inclined plate sedimentation tanks where the inclined plates are mounted on side positioning rods, making individual disassembly and cleaning inconvenient. The sedimentation tank shell has an inlet water distribution device and an upper drive motor fixedly connected from top to bottom on one side. An outlet water collection device is fixedly connected to the other side of the sedimentation tank shell. A multi-stage inclined plate is fixedly connected to the other end of a mounting block. One end of a lead screw is connected to the transmission end of the upper drive motor. A sliding block is provided on the surface of the lead screw, and a scraper is fixedly connected to the lower end of the sliding block. A sealing ring is provided between the upper sludge discharge pipe and the connecting ring above the rotating connector. A lower sludge discharge pipe is provided at the lower end of the connecting ring, and a sludge discharge device is fixedly connected to the lower end of the lower sludge discharge pipe. One end of the sludge discharge device is fixedly connected to the lower drive motor.

[0004] While the aforementioned technical solutions have their advantages, most multi-stage inclined plate sedimentation tanks still have some shortcomings in use. For example, ordinary simple inclined plate sedimentation tanks mostly use a single inclined plate structure, which has limited effect on promoting the sedimentation of impurities in the water. Furthermore, traditional sedimentation tanks often have a flat bottom or shallow conical structure at the bottom, making it easy for sludge from walnut processing wastewater to accumulate and clump at the bottom, hindering its complete discharge through the sewage pipe and affecting the treatment effect. Therefore, we propose a high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-efficiency multi-stage inclined plate sedimentation tank for wastewater includes a sedimentation tank body. A conical tank body is fixedly installed at the bottom of the sedimentation tank body, and a sewage pipe is fixedly installed at the bottom end of the conical tank body. A sewage valve is fixedly installed on the sewage pipe. Multiple first inclined plates are fixedly installed on the inner wall of the sedimentation tank body. An inlet pipe is fixedly installed on one side of the sedimentation tank body, and an outlet hood is fixedly installed near the top of the other side of the sedimentation tank body. Multiple second inclined plates are also installed inside the sedimentation tank body near the outlet hood. Each first inclined plate consists of an inclined section, a first vertical section, and a second vertical section. The first vertical section is located near the conical tank body, and the second vertical section is located near the top of the sedimentation tank body.

[0008] Preferably, the length of the second vertical section of the plurality of first inclined plates increases sequentially from the water inlet pipe side to the water outlet hood side, and the distance between the second vertical section and the top wall of the sedimentation tank body is greater than 10cm;

[0009] This setting promotes more thorough sedimentation of impurities in the water from left to right.

[0010] Preferably, a flow-slowing baffle is fixedly installed on the inner wall of the sedimentation tank body near the water inlet pipe, and the inner surface of the flow-slowing baffle is an arc-shaped surface.

[0011] Preferably, an anti-stick layer is provided on the surface of both the first inclined plate and the second inclined plate, and the thickness of the anti-stick layer is between 2mm and 3.5mm;

[0012] This anti-stick layer provides an anti-sticking effect.

[0013] Preferably, a fixing frame is fixedly installed on a plurality of the second inclined plate portions, and the fixing frame is fixedly installed on the inner wall of the sedimentation tank body.

[0014] Preferably, the end of the water outlet hood is provided with a water outlet pipe, and both the bottom wall of the water outlet hood and the water outlet pipe are inclined downward at 30 to 45 degrees.

[0015] This feature allows the treated water to be discharged outwards through the outlet pipe.

[0016] Preferably, an inner baffle is fixedly installed on the bottom wall of the water outlet hood near the main body of the sedimentation tank, and a triangular mesh cover is engaged between the inner baffle and the outer wall of the water outlet hood, and a filter screen is provided on the inner surface of the triangular mesh cover.

[0017] This setting allows for further filtration of the water using a filter screen.

[0018] Preferably, the two ends of the triangular mesh cover abut against the sides of the inner block and the water outlet cover, respectively. The cross-section of the triangular mesh cover is triangular. A handle is fixedly installed between the front and rear side plates of the triangular mesh cover. The weight of the triangular mesh cover is greater than the buoyancy of the triangular mesh cover when it is submerged in water.

[0019] This feature facilitates the fixing, installation, and removal of the triangular mesh cover.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model, through the setting of a multi-stage sedimentation structure with a first inclined plate and a second inclined plate, the first inclined plate is composed of an inclined section, a first vertical section and a second vertical section, and the length of the second vertical section of multiple first inclined plates increases sequentially from the water inlet pipe side to the water outlet hood side. It can intercept impurities of different particle sizes in walnut processing wastewater in layers. In conjunction with the second inclined plate, it further promotes the sedimentation of fine impurities, solves the problem of limited sedimentation effect of ordinary single inclined plates, realizes the step-by-step deep sedimentation of wastewater, improves the suspended solids removal rate and reduces the load of subsequent treatment.

[0022] 2. This utility model adopts a sludge discharge structure with a conical pool body and a sewage pipe. The bottom of the sedimentation tank is fixed with a conical pool body, and the bottom end is connected to a sewage pipe with a sewage valve. Compared with the traditional flat bottom or shallow conical structure, the conical pool body can guide the sludge to the bottom and avoid the accumulation and clumping of sticky sludge generated by walnut processing wastewater. Opening the sewage valve can allow the sludge to be completely discharged through the sewage pipe, preventing sludge residue from causing secondary pollution and ensuring the continuous and stable operation of the sedimentation tank.

[0023] 3. This utility model optimizes the anti-sticking and filtration design. The surfaces of the first and second inclined plates are provided with anti-sticking layers, which can reduce the adhesion of grease and impurities on the surface of the inclined plates, reduce the risk of clogging, and reduce the frequency of maintenance. The triangular mesh cover with filter screen is snapped into the water outlet cover, which can further filter the wastewater after sedimentation and intercept residual fine impurities. At the same time, the triangular mesh cover is easy to disassemble and clean, which not only improves the quality of the effluent but also ensures the convenience of equipment maintenance, and is suitable for the treatment needs of walnut processing wastewater. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a partial structural schematic diagram of the present invention;

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Sedimentation tank body; 10. Conical tank body; 11. Sewage pipe; 12. Sewage valve; 13. Water inlet pipe; 14. Flow damper; 15. First inclined plate; 151. Inclined section; 152. First vertical section; 153. Second vertical section; 16. Anti-sticking layer; 17. Fixing frame; 171. Second inclined plate;

[0029] 2. Water outlet cover; 20. Water outlet pipe; 21. Inner baffle; 22. Triangular mesh cover; 23. Filter screen; 24. Handle rod. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 are not intended to indicate or imply that the device or component 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.

[0032] Please see Figures 1-3 This utility model provides a technical solution: a high-efficiency multi-stage inclined plate sedimentation tank for wastewater, including a sedimentation tank body 1, a conical tank body 10 fixedly installed at the bottom of the sedimentation tank body 1, a sewage pipe 11 fixedly installed at the bottom end of the conical tank body 10, a sewage valve 12 fixedly installed on the sewage pipe 11, and the inner wall of the conical tank body 10 is inclined downward at 45 degrees to 60 degrees. The conical tank body 10 can guide the viscous sludge generated by walnut processing wastewater to the bottom to collect, avoiding the sludge from accumulating and clumping at the bottom of the tank. Opening the sewage valve 12 can completely discharge the sludge through the sewage pipe 11, ensuring that there is no sludge residue in the sedimentation tank body 1 and preventing secondary pollution.

[0033] In this embodiment, multiple first inclined plates 15 are fixedly installed on the inner wall of the sedimentation tank body 1. An inlet pipe 13 is fixedly installed on one side of the sedimentation tank body 1, and an outlet hood 2 is fixedly installed near the top of the other side of the sedimentation tank body 1. Multiple second inclined plates 171 are also installed inside the sedimentation tank body 1 near the outlet hood 2. The first inclined plate 15 consists of an inclined section 151, a first vertical section 152, and a second vertical section 153. The first vertical section 152 is located near the conical tank body 10, and the second vertical section 153 is located near the top of the sedimentation tank body 1. The length of the second vertical section 153 of the multiple first inclined plates 15 increases sequentially from the side of the inlet pipe 13 to the side of the outlet hood 2. The distance between the second vertical section 153 and the top wall of the sedimentation tank body 1 is greater than 10cm, which can intercept impurities of different particle sizes in the wastewater in layers. In conjunction with the second inclined plate 171, it further promotes the sedimentation of fine impurities, solves the problem of limited sedimentation effect of a single inclined plate, and improves the suspended solids removal rate.

[0034] like Figure 1 As shown, a flow-slowing baffle 14 is fixedly installed on the inner wall of the sedimentation tank body 1 near the inlet pipe 13. The inner surface of the flow-slowing baffle 14 is arc-shaped, which can buffer the flow rate of wastewater discharged from the inlet pipe 13, prevent water flow impact from causing the sedimented impurities in the tank to be resuspended, ensure a stable sedimentation environment, and improve the sedimentation effect.

[0035] Specifically, an anti-sticking layer 16 is provided on the surface of both the first inclined plate 15 and the second inclined plate 171. The thickness of the anti-sticking layer 16 is between 2mm and 3.5mm, which can reduce the adhesion of oil and impurities in walnut processing wastewater to the surface of the inclined plate, reduce the risk of clogging of the inclined plate, reduce the frequency of equipment maintenance, and extend the service life of the inclined plate.

[0036] like Figure 1 As shown, multiple second inclined plates 171 are fixedly installed with fixing frames 17. The fixing frames 17 are fixedly installed on the inner wall of the sedimentation tank body 1, which can provide stable support for the multiple second inclined plates 171, prevent the second inclined plates 171 from shifting or shaking under the action of water flow, ensure that the second inclined plates 171 always maintain a stable sedimentation angle, and ensure the sedimentation effect.

[0037] Furthermore, an outlet pipe 20 is provided at the end of the outlet hood 2. Both the bottom wall of the outlet hood 2 and the outlet pipe 20 are inclined downward at 30 to 45 degrees, which facilitates the flow of the settled clean water into the outlet pipe 20 under the action of gravity and quickly discharged outward, avoiding the retention of clean water in the outlet hood 2 and improving the wastewater treatment efficiency.

[0038] In addition, an inner baffle 21 is fixedly installed on the bottom wall of the effluent hood 2 near the sedimentation tank body 1. A triangular mesh cover 22 is snapped between the inner baffle 21 and the outer wall of the effluent hood 2. A filter screen 23 is provided on the inner surface of the triangular mesh cover 22, which can further filter the wastewater after sedimentation, intercept residual fine impurities, improve the quality of the effluent, and meet the requirements of subsequent treatment water intake.

[0039] It is worth noting that the two ends of the triangular mesh cover 22 abut against the sides of the inner stop block 21 and the water outlet cover 2, respectively. The cross-section of the triangular mesh cover 22 is triangular. A handle 24 is fixedly installed between the front and rear side plates of the triangular mesh cover 22. The weight of the triangular mesh cover 22 is greater than the buoyancy of the triangular mesh cover 22 when it is submerged in water, so it can be installed stably without additional fixation. The handle 24 makes it easy for operators to disassemble the triangular mesh cover 22 for cleaning or replacement, improving the convenience of maintenance.

[0040] It is worth noting that the anti-sticking layer 16 can be made of polytetrafluoroethylene (PTFE). PTFE has extremely low surface energy, and its adhesion to sticky substances such as grease and walnut kernel residue is almost zero. This can fundamentally reduce the adhesion of impurities to the surfaces of the first inclined plate 15 and the second inclined plate 171. PTFE is also resistant to acid and alkali corrosion, has a wide temperature range, and will not peel off or degrade in performance even after long-term immersion in water. The inner wall of the sedimentation tank body 1 can also be provided with a PTFE anti-sticking layer to achieve the anti-sticking effect and facilitate the smooth discharge of impurities.

[0041] When using the wastewater high-efficiency multi-stage inclined plate sedimentation tank of this utility model, the pretreatment preparation is as follows: confirm that the drain valve 12 is closed, the triangular mesh cover 22 is snapped into the water outlet cover 2 by the inner stop block 21, and the filter screen 23 is intact; check that the polytetrafluoroethylene anti-stick layer 16 on the surface of the first inclined plate 15 and the second inclined plate 171 is undamaged, and that the angle of the second inclined plate 171 supported by the fixing frame 17 is stable.

[0042] Inlet sedimentation: Walnut processing wastewater is discharged through inlet pipe 13. The arc-shaped surface of slow-flow baffle 14 buffers the water flow. The wastewater flows sequentially through the first inclined plate 15. The length of the second vertical section 153 increases from the inlet pipe 13 to the outlet hood 2, achieving stratified interception of impurities. Fine impurities are further settled through the second inclined plate 171, and sludge is collected at the bottom along the conical pool 10.

[0043] Filtration and sludge discharge: Clean water flows into the water outlet hood 2, is filtered by the filter screen 23, and is discharged along the bottom wall of the inclined water outlet hood 2 and the water outlet pipe 20; after the treatment is completed, the drain valve 12 is opened and the sludge is discharged through the drain pipe 11.

[0044] 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 embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the 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 the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency multi-stage inclined plate sedimentation tank for wastewater, comprising a sedimentation tank body (1), characterized in that: A conical tank body (10) is fixedly installed at the bottom of the sedimentation tank body (1). A sewage pipe (11) is fixedly installed at the bottom end of the conical tank body (10). A sewage valve (12) is fixedly installed on the sewage pipe (11). Multiple first inclined plates (15) are fixedly installed on the inner wall of the sedimentation tank body (1). A water inlet pipe (13) is fixedly installed on one side of the sedimentation tank body (1). A water outlet cover (2) is fixedly installed on the other side of the sedimentation tank body (1) near the top. Multiple second inclined plates (171) are also installed inside the sedimentation tank body (1) near the water outlet cover (2). The first inclined plate (15) is composed of an inclined section (151), a first vertical section (152), and a second vertical section (153). The first vertical section (152) is located on the side near the conical tank body (10), and the second vertical section (153) is located on the side near the top of the sedimentation tank body (1).

2. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 1, characterized in that: The length of the second vertical section (153) of the multiple first inclined plates (15) increases sequentially from the side of the inlet pipe (13) to the side of the outlet hood (2), and the distance between the second vertical section (153) and the top wall of the sedimentation tank body (1) is greater than 10cm.

3. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 1, characterized in that: A flow-slowing baffle (14) is fixedly installed on the inner wall of the sedimentation tank body (1) near the water inlet pipe (13), and the inner surface of the flow-slowing baffle (14) is an arc-shaped surface.

4. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 1, characterized in that: An anti-stick layer (16) is provided on the surface of both the first inclined plate (15) and the second inclined plate (171), and the thickness of the anti-stick layer (16) is between 2 mm and 3.5 mm.

5. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 1, characterized in that: A fixing frame (17) is fixedly installed on a plurality of the second inclined plate (171) parts, and the fixing frame (17) is fixedly installed on the inner wall of the sedimentation tank body (1).

6. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 1, characterized in that: The end of the water outlet cover (2) is provided with a water outlet pipe (20), and the bottom wall of the water outlet cover (2) and the water outlet pipe (20) are both inclined downward at 30 degrees to 45 degrees.

7. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 6, characterized in that: An inner baffle (21) is fixedly installed on the bottom wall of the water outlet cover (2) near the sedimentation tank body (1). A triangular mesh cover (22) is snapped between the inner baffle (21) and the outer wall of the water outlet cover (2). A filter screen (23) is provided on the inner surface of the triangular mesh cover (22).

8. The high-efficiency multi-stage inclined plate sedimentation tank for wastewater treatment according to claim 7, characterized in that: The two ends of the triangular mesh cover (22) abut against the inner block (21) and the side of the water outlet cover (2), respectively. The cross-section of the triangular mesh cover (22) is triangular. A handle (24) is fixedly installed between the front and rear side plates of the triangular mesh cover (22). The weight of the triangular mesh cover (22) is greater than the buoyancy of the triangular mesh cover (22) when it is submerged in water.

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