Vertical-flow sedimentation tank and sewage treatment system

Abstract

The utility model discloses a vertical flow type sedimentation tank and sewage treatment system, wherein the vertical flow type sedimentation tank comprises a tank body, a first flushing pipe and a second flushing pipe are arranged in the tank body in a high-low distribution mode, the first flushing pipe and the second flushing pipe are located at the position of a mud bucket of the tank body, and at least one of the first flushing pipe and the second flushing pipe extends out of the tank body. The left side or the right side of a first branch pipe of the first flushing pipe and the left side or the right side of a second branch pipe of the second flushing pipe are provided with spraying holes so that media sprayed out of the first branch pipe and the second branch pipe can form rotational flow. According to the vertical flow type sedimentation tank disclosed by the utility model, at least two layers of flushing pipes which are distributed in a high-low manner are adopted, so that the coverage range during cleaning can be effectively increased, and meanwhile, the two layers of flushing pipes adopt a manner of arranging spray holes on one side, so that a cleaning medium can effectively form rotational flow, and the cleaning effect can be better improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment, and in particular to vertical flow sedimentation tanks and wastewater treatment systems. Background Technology

[0002] Vertical flow sedimentation tanks are commonly used wastewater treatment equipment.

[0003] Patent document with authorization announcement number CN215781729U discloses a vertical flow sedimentation tank.

[0004] In this structure, backwashing is performed through a ring-shaped sludge discharge pipe in the sedimentation tank.

[0005] In this structure, there is only one layer of sedimentation tank sludge discharge pipe, resulting in a small coverage area during cleaning. Furthermore, due to the sludge's wall adhesion effect, the cleaning effect of existing technologies is relatively poor. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a vertical flow sedimentation tank and a sewage treatment system.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A vertical flow sedimentation tank includes a tank body, in which a first flushing pipe and a second flushing pipe are arranged at different heights. The first flushing pipe and the second flushing pipe are located at the sludge hopper of the tank body and at least one of them extends outside the tank body. Spray holes are provided on the left or right side of the first branch of the first flushing pipe and the second branch of the second flushing pipe so that the medium sprayed from the first branch and the second branch forms a swirling flow.

[0009] Preferably, in the vertical flow sedimentation tank, the length of the higher branch pipe or the lower branch pipe is greater than the length of the higher branch pipe.

[0010] Preferably, in the vertical flow sedimentation tank, the first flushing pipe includes four first branch pipes arranged in a cross shape, and the second flushing pipe includes four second branch pipes arranged in a cross shape, with the first and second branch pipes being staggered.

[0011] Preferably, in the vertical flow sedimentation tank, the included angle between adjacent first and second branch pipes is 45°.

[0012] Preferably, in the vertical flow sedimentation tank, the centers of the first flushing pipe and the second flushing pipe are connected by a vertical pipe.

[0013] Preferably, in the vertical flow sedimentation tank, the first flushing pipe and / or the second flushing pipe are connected to a flushing medium conveying pipeline. The flushing medium conveying pipeline includes a main pipeline and a branch pipeline. A first manual valve is provided at the branch pipeline, and a first automatic valve is provided at the main pipeline between the connection point of the main pipeline and the branch pipeline. The second automatic valve and the first sludge pump are connected to a controller.

[0014] Preferably, in the vertical flow sedimentation tank, the first automatic valve is connected to a controller, and the controller is connected to a sludge level gauge.

[0015] Preferably, in the vertical flow sedimentation tank, a sludge discharge pipe is provided at the sludge hopper, the sludge discharge pipe is connected to a sludge discharge pipeline, the sludge discharge pipeline includes a first sludge discharge pipe and a second sludge discharge pipe, a second manual valve is provided at the second sludge discharge pipe, a second automatic valve is provided at the second sludge discharge pipe located between the connection point of the first sludge discharge pipe and the second sludge discharge pipe, and a first sludge discharge pump is provided on the first sludge discharge pipe located downstream of the connection point of the second sludge discharge pipe and the first sludge discharge pipe.

[0016] Preferably, in the vertical flow sedimentation tank, the first sludge discharge pipe is also connected to a second sludge discharge pump in parallel with the first sludge discharge pump.

[0017] Wastewater treatment systems include vertical flow sedimentation tanks as described in any of the above descriptions.

[0018] The advantages of this utility model's technical solution are mainly reflected in:

[0019] The vertical flow sedimentation tank disclosed in this utility model adopts at least two layers of flushing pipes with varying heights, which can effectively increase the coverage area during cleaning. At the same time, the two layers of flushing pipes adopt a method of setting spray holes on one side, which can effectively make the cleaning medium form a swirling flow, thereby improving the cleaning effect.

[0020] This invention, by staggering the first and second branch pipes, effectively enhances the swirling effect, thereby improving the cleaning quality.

[0021] The first flushing pipe and the second flushing pipe of this utility model are connected, and can share a set of flushing medium delivery pipeline, which helps to simplify the structure.

[0022] The first automatic valve of the flushing medium conveying pipeline of this utility model can be controlled by the controller according to the amount of sludge in the sludge hopper. When the amount of sludge is large, the flushing medium conveying pipeline can be controlled to supply the medium for a certain period of time, thereby generating a certain pulse vibration to the sludge, which makes it easier to discharge the sludge during the sludge discharge process. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the vertical flow sedimentation tank of this utility model;

[0024] Figure 2 This is a top view of the first and second flushing tubes of this utility model;

[0025] Figure 3 This is a schematic diagram of the swirling flow formed by the first flushing pipe and the second flushing pipe of this utility model. Detailed Implementation

[0026] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0027] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," 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 and simplification of description. They do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example 1

[0029] The vertical flow sedimentation tank disclosed in this utility model will be described below with reference to the accompanying drawings, as shown in the attached drawings. Figure 1 -Appendix Figure 3 As shown, similar to existing vertical flow sedimentation tanks, the vertical flow sedimentation tank includes a tank body 100. The tank body 100 can be a known feasible shape. For example, the tank body 100 may include a cylindrical upper part 110 and an inverted frustum-shaped sludge hopper 120. The tank body 100 is provided with a first flushing pipe 200 and a second flushing pipe 300 distributed at different heights. The first flushing pipe 200 and the second flushing pipe 300 are located at the sludge hopper 120 of the tank body 100, and at least one of them extends outside the tank body 100. Spray holes are provided on the left or right side of the first branch pipe 110 of the first flushing pipe 200 and the second branch pipe 210 of the second flushing pipe 300 so that the medium sprayed from the first branch pipe 110 and the second branch pipe 210 forms a swirling flow. That is, a spray hole is provided on the left side of each first branch pipe 110 and the second branch pipe 210 or on the right side of each first branch pipe 110 and the second branch pipe 210, and the direction of the spray hole is obliquely downward at 45°.

[0030] As attached Figure 1 Appendix Figure 2 As shown, the first flushing pipe 200 is positioned above the second flushing pipe 300, and the length of the first branch pipe 110 is greater than the length of the second branch pipe 210, thereby better adapting to the shape of the mud hopper 120 to meet better cleaning needs.

[0031] As attached Figure 2 Appendix Figure 3 As shown, the first branch pipe 110 and the second branch pipe 210 are both radially distributed. The number of the first branch pipe 110 and the second branch pipe 210 can be set as needed. For example, the number of the first branch pipe 110 is 3-6, and the number of the second branch pipe 210 is 3-6. Preferably, the first flushing pipe 200 includes four first branch pipes 110 arranged in a cross shape, and the second flushing pipe 300 includes four second branch pipes 210 arranged in a cross shape. The first branch pipes 110 and the second branch pipes 210 are staggered, and the included angle between adjacent first branch pipes 110 and second branch pipes 210 is 45°, that is, the top view shape of the first flushing pipe 200 and the second flushing pipe 300 is a cross shape.

[0032] The first flushing pipe and the second flushing pipe can be independent of each other.

[0033] As attached Figure 1 As shown, to facilitate connection with the external flushing medium delivery pipeline 500, the centers of the first flushing pipe 200 and the second flushing pipe 300 are connected via a vertical pipe 400. Specifically, the first flushing pipe 200 is connected to the flushing medium delivery pipeline 500, and one of its four first branch pipes 110 extends outside the pool body 100. Simultaneously, the four first branch pipes 110 are connected via a five-way connector, which is connected to another five-way connector via the vertical pipe 400. This other connector connects to the four second branch pipes 210. Furthermore, a structure can be installed within the pool body to support the first and second flushing pipes for greater stability.

[0034] As attached Figure 1 As shown, the flushing medium delivery pipeline 500 includes a main pipeline 510 and a branch pipeline 520. A first manual valve 530 is installed at the branch pipeline 520, and a first automatic valve 540 is installed at the main pipeline 510, located between the connection point of the main pipeline 510 and the branch pipeline 520. The first automatic valve 540 can be a solenoid valve, an electric valve, a pneumatic valve, etc., and is not limited here. Of course, a manual valve can also be installed on the main pipeline 510, located between the connection point of the main pipeline 510 and the branch pipeline 520, and the main pipeline 510 can be connected to a water source or a gas source.

[0035] As attached Figure 1As shown, the first automatic valve 540 is connected to the controller 600, which in turn is connected to the mud level gauge 700. The mud level gauge 700 measures the mud level in the mud hopper. Therefore, the controller 600 can control the opening and closing frequency and duration of the first automatic valve 540 based on the mud level detected by the mud level gauge 700. When there is a large amount of sludge in the mud hopper 120 and sludge needs to be discharged, the first automatic valve 540 is opened to supply water or air to the first and second flushing pipes, which can apply a certain amount of vibration to the sludge, making it easier to discharge. The electrical connection structure of the controller 600, the first automatic valve 540, and the mud level gauge 700 is known technology and not an innovation of this solution; therefore, it will not be described in detail here.

[0036] As attached Figure 1 As shown, a sludge discharge pipe 800 is provided at the sludge hopper 120. The sludge discharge pipe 800 is connected to a sludge discharge pipeline 900. The sludge discharge pipeline 900 includes a first sludge discharge pipe 910 and a second sludge discharge pipe 920. A second manual valve 930 is provided at the second sludge discharge pipe 920, and a second automatic valve 940 is provided at the second sludge discharge pipe 920, located between the connection point of the first sludge discharge pipe 910 and the second sludge discharge pipe 920. A first sludge discharge pump 950 is provided on the first sludge discharge pipe 910, located downstream of the connection point of the second sludge discharge pipe 920 and the first sludge discharge pipe 910. Both the first sludge discharge pump 950 and the second automatic valve 940 are connected to the controller. The use of two sludge discharge pipes 800 can effectively improve redundancy and ensure the effective operation of the equipment. Furthermore, when the sludge level gauge detects that the sludge has reached a certain level, the controller controls the first sludge discharge pump 950 to operate and the second automatic valve 940 to open for sludge discharge. When the sludge level drops to a certain low height, the controller controls the first sludge discharge pump 950 and the second automatic valve 940 to close.

[0037] Meanwhile, the first sludge discharge pipe 910 is also connected to a second sludge discharge pump 960 in parallel with the first sludge discharge pump 950. The second sludge discharge pump is also connected to a controller. Adding a second sludge discharge pump 960 can improve sludge discharge efficiency when necessary by using dual pumps to discharge sludge, and can also ensure normal sludge discharge when one sludge discharge pump fails, thus increasing the reliability of system operation.

[0038] Of course, the vertical flow sedimentation tank also includes other structures known to be present in vertical flow sedimentation tanks, such as inlet, outlet weir, and outlet, which will not be elaborated here. Furthermore, in other embodiments, the number of flushing pipes in the sludge hopper 120 can be further increased, for example, to 3 or more layers, which is not limited here.

[0039] Example 2

[0040] This embodiment discloses a wastewater treatment system, including a vertical flow sedimentation tank as described above.

[0041] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A vertical flow sedimentation basin comprising a basin body, characterised in that: The pool body is provided with first and second flushing pipes with high and low distribution, the first and second flushing pipes are located at the hopper of the pool body and at least one of them extends out of the pool body, the left or right side of the first branch pipe of the first flushing pipe and the second branch pipe of the second flushing pipe is provided with a spray hole to form a cyclone of the medium sprayed by the first and second branch pipes.

2. The vertical flow sedimentation basin according to claim 1, characterized in that: In the first or second branch pipe, the length of the higher one is greater than that of the lower one.

3. The vertical flow sedimentation basin of claim 1, wherein: The first flushing pipe includes four first branch pipes in cross shape, the second flushing pipe includes four second branch pipes in cross shape, and the first and second branch pipes are distributed in staggered manner.

4. The vertical flow sedimentation basin of claim 3, wherein: The included angle between adjacent first and second branch pipes is 45°.

5. The vertical flow sedimentation basin of claim 1, wherein: The centers of the first and second flushing pipes are connected by a standpipe.

6. The vertical flow sedimentation basin of claim 1, wherein: The first and / or second flushing pipe is connected to a flushing medium conveying pipeline, the flushing medium conveying pipeline includes a main pipeline and a branch pipeline, a first manual valve is arranged at the branch pipeline, and a first automatic valve is arranged at the main pipeline between the connection point of the main pipeline and the branch pipeline.

7. The vertical flow sedimentation basin according to claim 6, characterized in that: The first automatic valve is connected to a controller, and the controller is connected to a mud level meter.

8. The vertical flow sedimentation basin according to any of claims 1 to 7, characterized in that: A mud discharge pipe is arranged at the hopper, the mud discharge pipe is connected to a mud discharge pipeline, the mud discharge pipeline includes a first mud discharge pipeline and a second mud discharge pipeline, a second manual valve is arranged at the second mud discharge pipeline, a second automatic valve is arranged at the second mud discharge pipeline between the connection point of the first and second mud discharge pipelines, a first mud discharge pump is arranged on the first mud discharge pipeline downstream of the connection point of the second and first mud discharge pipelines, and the second automatic valve and the first mud discharge pump are connected to a controller.

9. The vertical flow sedimentation basin of claim 8, wherein: The first mud discharge pipeline is further connected to a second mud discharge pump in parallel with the first mud discharge pump.

10. A sewage treatment system characterised by: A vertical flow sedimentation tank comprising any one of the vertical flow sedimentation tanks according to claims 1-9.

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