An adjustable screening tank

Abstract

This utility model relates to the field of wastewater treatment technology, specifically to an adjustable screening tank, including a tank body with an inlet pipe and an outlet pipe connected to it. Several sets of slide rails are installed inside the tank body, and water-blocking components are placed on the inner side of the slide rails, dividing the tank body into an inlet zone and an outlet zone. The water-blocking components include a first baffle plate and a second baffle plate distributed vertically, with identical structures. A sludge discharge pump and a ramp are installed at the bottom of the inlet zone, and a water distribution pipe is installed between the sludge discharge pump and the ramp, connected to the inlet pipe. This utility model achieves flexible adjustment of the effective volume of the inlet zone by pulling and engaging the water-blocking components with different sets of slide rails, thereby enabling graded adjustment of the sludge upward flow velocity and improving the adaptability and efficiency of wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an adjustable screening tank. Background Technology

[0002] Sedimentation tanks are crucial components of domestic wastewater treatment systems. Their core function is to effectively separate sludge from water using the principle of gravity sedimentation. After sedimentation, the supernatant flows smoothly into subsequent treatment stages, while the sludge is pumped away. However, most widely used sedimentation tanks employ fixed baffles or overflow weirs, which prevents the sludge's upward flow velocity from being adjusted according to actual needs. When influent flow or sludge concentration fluctuates, the sludge layer height in the sedimentation tank often exceeds the appropriate range, resulting in either excessively high sludge levels leading to sludge overflow or insufficient separation due to excessively low sludge levels. To address these issues, operators must frequently perform sludge removal or manual intervention, which not only reduces treatment efficiency but also affects the stability of the wastewater treatment system. Therefore, the market urgently needs a screening tank design that can flexibly adjust the sludge's upward flow velocity and adapt to different influent flow rates and sludge concentrations to improve the efficiency and stability of wastewater treatment. Summary of the Invention

[0003] To address the issue that most sedimentation tanks use fixed baffles or overflow weirs, which prevent the upward flow velocity of sludge from being adjusted according to actual needs, this invention proposes an adjustable screening tank. By pulling out the baffle and engaging different sets of slide rails, the effective volume of the inlet area can be flexibly adjusted, thereby enabling graded adjustment of the upward flow velocity of sludge and improving the adaptability and efficiency of wastewater treatment.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An adjustable screening tank includes a tank body with an inlet pipe and an outlet pipe connected to it. Several sets of slide rails are installed inside the tank body, and water-blocking components are placed on the inner sides of the slide rails, dividing the tank body into an inlet zone and an outlet zone. Each water-blocking component includes a first baffle plate and a second baffle plate distributed vertically, with identical structures. A sludge discharge pump and a ramp are installed at the bottom of the inlet zone, and a water distribution pipe is installed between the sludge discharge pump and the ramp, connected to the inlet pipe. In this invention, the water-blocking components and slide rails cooperate, allowing the first and second baffle plates to be independently pulled and pulled along the slide rails within the tank body, achieving position adjustment. Specifically, by pulling and pulling the water-blocking components and engaging them with different sets of slide rails, the effective volume of the inlet zone can be flexibly adjusted, thereby enabling graded adjustment of the sludge upward flow velocity.

[0006] Furthermore, the inlet pipe is located on the upper side of the pool body, with one end penetrating the right side wall of the pool body and extending downwards to connect with the distribution pipe. The inlet pipe is responsible for the inflow of sewage, and the distribution pipe further ensures the uniform distribution of water flow.

[0007] Furthermore, the water inlet pipe is installed at a position higher than the height of the water-blocking component.

[0008] Furthermore, the water distribution pipe is a hollow tubular structure closed at both ends, and several water passage holes are provided on the water distribution pipe. The water passage holes are arranged in an inclined downward manner facing the side of the sludge pump.

[0009] Furthermore, each set of slide rails is configured with two rails, and the two slide rails in the same set are symmetrically distributed on the front and rear inner walls of the pool.

[0010] Furthermore, a U-shaped groove is provided on the slide rail, and the sides of the first baffle plate and the second baffle plate are embedded in the groove.

[0011] Furthermore, the slope is inclined from top to bottom from the inlet area to the outlet area, and the sludge pump is located on the side near the lower end of the slope.

[0012] Furthermore, both the first and second baffles are provided with handles at their tops, and both the first and second baffles have receiving grooves at their bottoms that mate with the handles. The first and second baffles are stacked one on top of the other within the slide rail, and the receiving grooves at their bottoms can accommodate the handles when they are stacked.

[0013] Furthermore, baffles are provided on both sides of the handle, extending along the length of the first or second baffle. The bottom of the first and second baffles also has through grooves that mate with the baffles. The baffles cover the joint between the first and second baffles, preventing mud and water from entering the gap between the plates and maintaining the continuity of the water-blocking interface.

[0014] Furthermore, the outlet pipe is located on the lower side of the tank, penetrating the left side wall of the tank and connecting to the bottom of the outlet area. This ensures that the treated water can be smoothly discharged from the screening tank.

[0015] The beneficial effects of this utility model through the above technical solution are as follows:

[0016] 1. In this utility model, the water-blocking component and the slide rail cooperate to allow the first and second baffle plates to be independently pulled and pulled along the slide rail within the pool body, achieving position adjustment. Specifically, by pulling the water-blocking component and engaging it with different sets of slide rails, the effective volume of the inlet area can be flexibly adjusted, thereby enabling graded regulation of the sludge rising velocity and improving the adaptability and efficiency of wastewater treatment. Specifically, the closer the water-blocking component is to the inlet pipe, the narrower the inlet area of ​​the pool and the higher the sludge rising velocity; conversely, the farther the water-blocking component is from the inlet pipe, the wider the inlet area of ​​the pool and the lower the sludge rising velocity. Furthermore, a sludge pump and a ramp are configured at the bottom of the inlet area. The ramp design facilitates sludge accumulation, while the sludge pump is responsible for discharging the sludge. A water distribution pipe is installed between the sludge pump and the ramp, connected to the inlet pipe, for uniformly distributing the inlet water.

[0017] 2. The key improvement of this utility model is that the water-blocking component adopts a split design, with the first baffle plate and the second baffle plate arranged vertically. Assuming that the current arrangement of the water-blocking component is that the first baffle plate is on top and the second baffle plate is on the bottom, if it is necessary to adjust to the target gear, the operator first pulls out the upper first baffle plate by the handle and places it in the slide rail of the target gear, and then pulls out the second baffle plate and places it in the same gear, at which time the second baffle plate is on top and the first baffle plate is on the bottom. During the switching of the target gear, the first baffle plate and the second baffle plate are pulled out alternately and inserted into the slide groove on the slide rail in sequence to ensure that the water-blocking interface is continuously closed, preventing the bottom sludge from entering the outlet area and affecting the quality of the outlet water during the switching period. Attached Figure Description

[0018] Figure 1 This is a perspective view of an adjustable screening tank according to the present invention;

[0019] Figure 2 This is a top view of an adjustable screening tank according to the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of an adjustable screening tank according to the present invention;

[0021] Figure 4 This is a schematic diagram of an adjustable screening tank slide rail and water baffle according to the present invention;

[0022] Figure 5 This is a schematic diagram of an adjustable slide rail in a screening tank according to the present invention;

[0023] Figure 6 This is a schematic diagram of the first baffle plate in an adjustable screening tank according to this utility model. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the first baffle plate in an adjustable screening tank according to this utility model. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the water inlet pipe and water distribution pipe in an adjustable screening tank according to the present invention;

[0026] Figure 9 This is a schematic diagram illustrating the application state of an adjustable screening tank according to the present invention.

[0027] The labels in the attached drawings are:

[0028] 1. Pool body; 2. Inlet pipe; 3. Outlet pipe; 4. Slide rail; 5. First baffle; 6. Second baffle; 7. Sludge pump; 8. Slope; 9. Water distribution pipe; 10. Water passage hole; 11. Slide groove; 12. Handle; 13. Receiving tank; 14. Baffle bar; 15. Through groove. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] like Figures 1-9 As shown, this embodiment provides an adjustable screening tank, including a tank body 1. The tank body 1 is connected to an inlet pipe 2 and an outlet pipe 3. Several sets of slide rails 4 are arranged inside the tank body 1. Water-blocking components are placed on the inner side of the slide rails 4. In actual application, the water-blocking components can be installed on the inner side of one set of slide rails 4 according to the required upward flow velocity of sludge. The water-blocking components divide the tank body 1 into an inlet zone and an outlet zone. The water-blocking components include a first baffle plate 5 and a second baffle plate 6 distributed vertically. The first baffle plate 5 and the second baffle plate 6 have the same structure. A sludge discharge pump 7 and a ramp 8 are arranged at the bottom of the inlet zone. A water distribution pipe 9 is arranged between the sludge discharge pump 7 and the ramp 8. The water distribution pipe 9 is connected to the inlet pipe 2.

[0031] In this invention, the water-blocking component and the slide rail 4 cooperate to allow the first baffle plate 5 and the second baffle plate 6 to be independently pulled and pulled along the slide rail 4 within the pool body 1, achieving position adjustment. Specifically, by pulling the water-blocking component and engaging it with different sets of slide rails 4, the effective volume of the inlet area can be flexibly adjusted, thereby enabling graded adjustment of the sludge rising velocity and improving the adaptability and efficiency of wastewater treatment. Specifically, the closer the water-blocking component is to the inlet pipe 2, the narrower the inlet area of ​​the pool body 1 and the higher the sludge rising velocity; conversely, the farther the water-blocking component is from the inlet pipe 2, the wider the inlet area of ​​the pool body 1 and the lower the sludge rising velocity. Furthermore, a sludge discharge pump 7 and a ramp 8 are configured at the bottom of the inlet area. The ramp 8 is designed to facilitate sludge accumulation, while the sludge discharge pump 7 is responsible for discharging the sludge. A water distribution pipe 9 is installed between the sludge discharge pump 7 and the ramp 8, and this water distribution pipe 9 is connected to the inlet pipe 2 for uniformly distributing the inlet water.

[0032] In this embodiment, the inlet pipe 2 is located on the upper side of the pool body 1. One end of the inlet pipe 2 penetrates the right side wall of the pool body 1 and extends downward to connect with the distribution pipe 9. The inlet pipe 2 is responsible for the inflow of sewage, and the inlet pipe 2 is ultimately connected to the distribution pipe 9. This design not only ensures that the water can smoothly enter the pool body 1, but also further achieves uniform water flow distribution through the distribution pipe 9.

[0033] The inlet pipe 2 is installed at a height higher than the water-blocking component. The height difference between the inlet pipe 2 and the water-blocking component ensures that water flows sequentially through the inlet and outlet areas without external force, and finally exits from the outlet pipe 3, thus completing the wastewater purification process.

[0034] Please refer to this again. Figure 8 The water distribution pipe 9 is a hollow tubular structure closed at both ends, with several water passage holes 10 on it. The water passage holes 10 are arranged at an angle downwards towards the sludge pump 7. The closed ends of the water distribution pipe 9 form independent cavities, forcing water flow to be evenly distributed through the water passage holes 10. Since the water passage holes 10 are inclined towards the sludge pump 7, the water flow, while impacting the sludge, also pushes the sludge towards the sludge pump 7. This helps the sludge slide more smoothly under gravity and accumulate at the lower end of the slope 8, where it can then be efficiently discharged by the sludge pump 7.

[0035] Please refer to this again. Figure 2 Each set of slide rails 4 consists of two rails, symmetrically distributed on the front and rear inner walls of the pool body 1. This provides support for the stable sliding of the water-blocking component. A U-shaped groove 11 is provided on the slide rail 4, and the sides of the first baffle plate 5 and the second baffle plate 6 are embedded in the groove 11, allowing the water-blocking component to slide smoothly and stably along the groove 11.

[0036] Please refer to this again. Figure 5 The slide rail 4 has a U-shaped groove 11, and the sides of the first baffle plate 5 and the second baffle plate 6 are embedded in the groove 11. This allows the first baffle plate 5 and the second baffle plate 6 to slide smoothly and stably along the U-shaped groove 11.

[0037] Please refer to this again. Figure 3 The slope 8 is inclined from top to bottom from the inlet area to the outlet area, and the sludge pump 7 is located on the side near the lower end of the slope 8. The design of the slope 8 helps the sludge to slide smoothly down the slope 8 under the action of gravity and accumulate at the lower end of the slope 8, that is, to use gravity to allow the settled sludge to slide naturally to the lower end of the slope 8; at the same time, the sludge pump 7 is cleverly placed on the side near the lower end of the slope 8, which can ensure that the sludge can be pumped out to the next stage in a timely and efficient manner after it has accumulated.

[0038] Please refer to this again. Figure 6 and Figure 7 The first baffle 5 and the second baffle 6 are each provided with a handle 12 at their top, and each of the first baffle 5 and the second baffle 6 is provided with a receiving groove 13 at its bottom that mates with the handle 12. Manual pulling operation is achieved through the top handle 12. The first baffle 5 and the second baffle 6 are stacked vertically within the slide rail 4, and the receiving groove 13 at the bottom can accommodate the handle 12 when they are stacked.

[0039] It is worth mentioning that baffles 14 are provided on both sides of the handle 12. The baffles 14 extend along the length of the first baffle plate 5 or the second baffle plate 6. The bottom of the first baffle plate 5 and the second baffle plate 6 are also provided with through grooves 15 that cooperate with the baffles 14. The baffles 14 extend along the length of the baffle plate and form a fitting structure with the bottom through grooves 15. When the first baffle plate 5 and the second baffle plate 6 are stacked on top of each other in the slide rail 4, the baffles 14 cover the joint of the first baffle plate 5 and the second baffle plate 6, preventing mud and water from entering the gap between the plates and maintaining the continuity of the water-blocking interface.

[0040] In this embodiment, the outlet pipe 3 is located on the lower side of the tank body 1, and the outlet pipe 3 penetrates the left side wall of the tank body 1 and connects to the bottom of the outlet area of ​​the tank body 1. This layout ensures that the treated water can be smoothly discharged from the screening tank body 1.

[0041] The working principle of this utility model is as follows:

[0042] Wastewater is injected into the screening tank 1 through the inlet pipe 2, and then flows smoothly into the distribution pipe 9 at the bottom of the inlet area. The water passage holes 10 designed on the distribution pipe 9 ensure that the water flow is evenly and widely distributed throughout the entire inlet area. The water flow slowly diffuses downwards along the slope 8; this ingenious design effectively avoids short-circuiting. Within the inlet area of ​​the tank 1, sludge settles under gravity and accumulates at the bottom of the slope 8. Simultaneously, clean water flows upwards under water pressure, passing through the overflow area above the baffle and finally entering the outlet area. A key improvement is that by flexibly adjusting the insertion position of the baffle in the vertical slide rail 4, the cross-sectional area of ​​the inlet area can be directly changed, thereby achieving graded adjustment of the sludge upward flow velocity. The sludge at the bottom of the slope 8 is periodically or continuously pumped out by the sludge pump 7, ensuring that sludge does not accumulate. The clean water overflowing from the baffle flows smoothly into the outlet area and is finally discharged through the outlet pipe 3.

[0043] Regarding the adjustment method of different positions of the water baffle: The water baffle adopts a split design, with the first baffle 5 and the second baffle 6 arranged vertically. Assuming that the current arrangement of the water baffle is with the first baffle 5 on top and the second baffle 6 on the bottom, to adjust to the target position, the operator first pulls out the upper first baffle 5 using handle 12 and places it in the slide rail 4 of the target position. Then, the operator pulls out the second baffle 6 and places it in the same position, at which point the second baffle 6 is on top and the first baffle 5 is on the bottom. Please refer to the instructions again. Figure 9 During the switching of the target gear, the first baffle 5 and the second baffle 6 are pulled out alternately and inserted into the slide groove 11 on the slide rail 4 in sequence to ensure that the water blocking interface is continuously closed and to prevent the bottom mud from entering the outlet area and affecting the quality of the outlet water during the switching process.

[0044] In summary, the adjustable screening tank provided in this embodiment, with its flexible water-blocking components and sliding rail configuration, successfully achieves flexible adjustment of the effective volume of the influent zone, thereby enabling graded adjustment of the sludge rising velocity and significantly improving the flexibility and sedimentation efficiency of wastewater treatment. This screening tank is easy to operate and runs stably, demonstrating excellent wastewater treatment performance and application potential.

[0045] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. An adjustable screening tank, comprising a tank body (1), wherein an inlet pipe (2) and an outlet pipe (3) are connected to the tank body (1), characterized in that, The pool body (1) is provided with several sets of slide rails (4), and water baffles are placed on the inner side of the slide rails (4). The water baffles divide the pool body (1) into an inlet area and an outlet area. The water baffles include a first baffle plate (5) and a second baffle plate (6) distributed vertically. The first baffle plate (5) and the second baffle plate (6) have the same structure. The bottom of the inlet area is provided with a sludge pump (7) and a ramp (8). A water distribution pipe (9) is provided between the sludge pump (7) and the ramp (8). The water distribution pipe (9) is connected to the inlet pipe (2).

2. The adjustable screening tank according to claim 1, characterized in that, The water inlet pipe (2) is located on the upper side of the pool body (1). One end of the water inlet pipe (2) passes through the right side wall of the pool body (1) and extends downward to connect with the water distribution pipe (9).

3. The adjustable screening tank according to claim 1, characterized in that, The water inlet pipe (2) is installed at a position higher than the height of the water-blocking component.

4. An adjustable screening tank according to claim 1, characterized in that, The water distribution pipe (9) is a hollow tubular structure with closed ends. Several water passage holes (10) are provided on the water distribution pipe (9). The water passage holes (10) are arranged in an inclined downward manner facing the mud pump (7).

5. An adjustable screening tank according to claim 1, characterized in that, Each group of slide rails (4) is set to two, and the two slide rails (4) in the same group are symmetrically distributed on the front and rear inner walls of the pool body (1).

6. An adjustable screening tank according to claim 1, characterized in that, The slide rail (4) is provided with a U-shaped groove (11), and the sides of the first baffle plate (5) and the second baffle plate (6) are embedded in the groove (11).

7. An adjustable screening tank according to claim 1, characterized in that, The slope (8) is inclined from the inlet area to the outlet area from top to bottom, and the sludge pump (7) is located on the side near the lower end of the slope (8).

8. An adjustable screening tank according to claim 1, characterized in that, The top of the first baffle (5) and the second baffle (6) are provided with handles (12), and the bottom of the first baffle (5) and the second baffle (6) are provided with receiving grooves (13) that cooperate with the handles (12).

9. An adjustable screening tank according to claim 8, characterized in that, Both sides of the handle (12) are provided with baffles (14), which extend along the length of the first baffle (5) or the second baffle (6). The bottom of the first baffle (5) and the second baffle (6) are also provided with through grooves (15) that cooperate with the baffles (14).

10. An adjustable screening tank according to claim 1, characterized in that, The water outlet pipe (3) is located on the other side of the lower part of the pool body (1). The water outlet pipe (3) passes through the left side wall of the pool body (1) and is connected to the bottom of the water outlet area of ​​the pool body (1).

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