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, the lower part of the tank body is a sludge hopper, a plurality of layers of annular sludge discharge pipes are sequentially arranged in the sludge hopper from top to bottom, the sludge discharge pipes are provided with sludge discharge holes, the adjacent layers of sludge discharge pipes are communicated, and the sludge discharge holes are communicated with the sludge discharge pipes. The lowermost sludge discharge pipe is connected with a discharge pipe, the discharge pipe extends out of the sludge hopper and is connected with a main discharge pipe, the main discharge pipe is provided with a first automatic valve for controlling the on-off of the main discharge pipe, and the first automatic valve is connected with a time controller. According to the vertical flow type sedimentation tank, the time controller continuously and circularly controls the first automatic valve to be opened and closed according to the set time, so that the effect similar to pulse disturbance can be achieved on sludge in the tank body, the mixing effect of the sludge in the tank body is improved, and the sludge can be discharged more easily.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection equipment, in particular to a vertical flow sedimentation tank and a sewage treatment system. Background Art

[0002] Vertical flow sedimentation tank is a commonly used equipment in sewage treatment.

[0003] The utility model patent with the authorization announcement number CN209204750U discloses the structure of a typical vertical flow sedimentation tank. In this structure, a sewage pipe network and a sewage pipe are provided.

[0004] However, in this structure, the sludge discharge points are all located at the bottom of the sludge hopper, and the sludge above the sludge hopper is prone to coagulation and compaction, while the sewage network and sewage pipes are difficult to provide stable disturbance to the sludge above the sludge hopper, which also leads to poor sludge discharge effect. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to provide a vertical flow sedimentation tank and a sewage treatment system.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A vertical flow sedimentation tank comprises a tank body, the lower part of which is a sludge hopper, in which multiple layers of annular sludge discharge pipes are arranged in sequence from top to bottom, each of which is provided with a sludge discharge hole, and the sludge discharge pipes of adjacent layers are connected to each other, and the sludge discharge pipe of the lowest layer is connected to a discharge pipe, which extends out of the sludge hopper and is connected to a main discharge pipe, and a first automatic valve for controlling its on and off is arranged on the main discharge pipe, and the first automatic valve is connected to a time controller.

[0008] Preferably, in the vertical flow sedimentation tank, the sludge discharge pipes are three-layered and the height difference between adjacent layers is the same, and they are distributed in the upper, middle and lower positions of the sludge hopper.

[0009] Preferably, in the vertical flow sedimentation tank, the mud discharge hole is arranged on the mud discharge pipe at an angle of 45° downward.

[0010] Preferably, in the vertical flow sedimentation tank, the mud discharge pipe is circular or square with rounded corners.

[0011] Preferably, in the vertical flow sedimentation tank, the mud discharge pipes of adjacent layers are connected by a plurality of mud discharge inclined pipes.

[0012] Preferably, in the vertical flow sedimentation tank, the mud discharge pipe of each layer includes multiple sections of pipes, and the multiple sections of pipes are connected by pipe connectors and connected to the mud discharge inclined pipes through the pipe connectors.

[0013] Preferably, in the vertical flow sedimentation tank, the main discharge pipe is also connected to a discharge branch, and two connection points between the discharge branch and the main discharge pipe are located on both sides of the first automatic valve.

[0014] Preferably, in the vertical flow sedimentation tank, the main discharge pipe is also connected to a backwash pipeline, and the backwash pipeline is connected to a compressed air source.

[0015] Preferably, in the vertical flow sedimentation tank, the backwash pipeline includes a first branch and a second branch connected in parallel.

[0016] A sewage treatment system comprises a vertical flow sedimentation tank as described above.

[0017] The advantages of the technical solution of the utility model are mainly reflected in:

[0018] The utility model arranges multiple layers of annular mud discharge pipes in the mud hopper, and at the same time makes the mud discharge pipes interconnected and makes the mud discharge pipes at the bottom layer connected to the first automatic valve, and makes the first automatic valve connected to the time controller. Therefore, the time controller continuously and cyclically controls the opening and closing of the first automatic valve according to the set time, thereby being able to have a pulse disturbance-like effect on the sludge in the pool body, increasing the mixing effect of the sludge in the pool, and making it easier to discharge the sludge.

[0019] The mud discharge pipe of the utility model adopts a plurality of pipelines to be connected with the pipe connecting device, and can be assembled conveniently.

[0020] The utility model connects the mud discharge pipe to the backwash pipe, and controls the backwash pipe to be cleaned regularly by a time controller, which can effectively avoid the pipe blockage, and at the same time effectively improves the deficiency of water washing by adopting the air blowing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a vertical flow sedimentation tank of the utility model;

[0022] Figure 2 It is a top view of the sludge hopper area of ​​the vertical flow sedimentation tank of the utility model;

[0023] Figure 3 The utility model is a schematic diagram of the connection between the mud discharge pipe and the mud discharge inclined pipe of the vertical flow sedimentation tank. DETAILED DESCRIPTION

[0024] The purpose, advantages and features of the present invention will be illustrated and explained through the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0025] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] Example 1

[0027] The vertical flow sedimentation tank disclosed by the utility model is described below in conjunction with the accompanying drawings. Figure 1 As shown, it includes a tank body 100, and the tank body 100 can be a square or round tank body 100 as in the prior art. Like the existing vertical flow sedimentation tank, it also includes a central pipe 200 arranged in the tank body 100, a water inlet pipe 300 extending from the outside of the tank body 100 to the inside of the central pipe 200, a water distributor 400 connected to the bottom of the central pipe 200, a water outlet weir 500, a drainage trough 600 and other structures, which are not described here. The lower part of the tank body 100 is a sludge hopper 110, and the sludge hopper 110 can also be a round sludge hopper or a square sludge hopper.

[0028] Different from the prior art:

[0029] As attached Figure 1 , Attachment Figure 2 As shown, multiple layers of annular mud discharge pipes 700 are sequentially arranged from top to bottom in the sludge hopper 110, and mud discharge holes are arranged on the mud discharge pipes 700. The mud discharge pipes 700 of adjacent layers are connected to each other, and the mud discharge pipe 700 of the lowest layer is connected to the discharge pipe 800, and the discharge pipe 800 extends to the outside of the sludge hopper 110 and is connected to the main discharge pipe 900. The main discharge pipe 900 is provided with a first automatic valve 910 for controlling its on and off, and the first automatic valve 910 is connected to the time controller A. Like the prior art, the main discharge pipe is connected to a mud discharge pump (not shown in the figure) for discharging mud.

[0030] When in use, the time controller A continuously and cyclically controls the opening and closing of the first automatic valve 910 according to the set time, thereby being able to produce a pulse disturbance-like effect on the sludge in the tank body 100, thereby increasing the mixing effect of the sludge in the tank and making it easier to discharge the sludge.

[0031] The number of layers of the mud discharge pipe 700 can be designed as needed. In this embodiment, the mud discharge pipe 700 is three-layered and the height difference of adjacent layers is the same. They are distributed in the upper, middle and lower positions of the sludge hopper 110. The design of the three-layer mud discharge pipe 700 can ensure that each position in the sludge hopper 110 can receive disturbance, thereby reducing the influence of the wall attachment effect on the mud discharge, which is beneficial to ensure the mud discharge effect and efficiency.

[0032] At the same time, in order to facilitate mud discharge, the mud discharge hole is arranged on the mud discharge pipe 700 at an angle of 45 degrees downward.

[0033] The shape of the mud discharge pipe 700 of each layer can be designed as needed. In this embodiment, the mud discharge pipe 700 is preferably circular or square with rounded corners. The mud discharge pipes 700 of adjacent layers are connected by a plurality of mud discharge inclined pipes B.

[0034] During assembly, the mud discharge pipe 700 can be a closed annular tube. When it is necessary to connect the mud discharge inclined pipe B, connecting holes can be opened on the upper side and / or lower side of the mud discharge pipe 700 to connect the mud discharge inclined pipe B. When connecting, the mud discharge inclined pipe B can be welded to the mud discharge pipe 700 to achieve a stable connection.

[0035] In order to facilitate assembly, a better way is as follows Figure 3 As shown, each layer of the mud discharge pipe 700 includes multiple sections of pipes 710, and the multiple sections of pipes are connected by a pipe connector 720 and connected to the mud discharge inclined pipe B through the pipe connector 720. The mud discharge pipe 700 located at the middle height of the pool body 100 is taken as an example for explanation, which includes four arc-shaped or L-shaped pipes, and the four L-shaped pipes are connected in sequence through four regular four-way pipes. At the same time, the upper interfaces of three of the regular four-way pipes are respectively connected to the upper mud discharge pipe 700 through the upper mud discharge inclined pipe B, and the lower interfaces of the three regular four-way pipes are respectively connected to the lower mud discharge pipe 700 through the lower mud discharge inclined pipe B.

[0036] As attached Figure 1 As shown, the first automatic valve 910 is specifically a known electric valve, and of course it can also be other feasible valve bodies. At the same time, the main discharge pipe is also provided with a first manual valve 920 and a second manual valve 930 located on both sides of the first automatic valve 910, so as to avoid the situation where the main discharge pipe cannot be closed due to a failure of the first automatic valve 910. When working, the first manual valve and the second manual valve are normally kept in a normally open state.

[0037] As attached Figure 1 As shown, the main discharge pipe is also connected to a discharge branch C. Two connection points between the discharge branch C and the main discharge pipe are located on both sides of the first automatic valve 910. The discharge branch C includes a third manual valve C1 for controlling its on-off.

[0038] As attached Figure 1 As shown, the main discharge pipe is also connected to a backwash pipeline D, and the backwash pipeline D is connected to a compressed air source D1. Of course, in other embodiments, the backwash pipeline D can also be connected to a water source. Using a compressed air source D1 for backwashing can reduce the pollution of water resources caused by water washing.

[0039] Similarly, in order to ensure the stability of the structure, the backwash pipeline D includes a first branch D2 and a second branch D3 connected in parallel. The first branch D2 is controlled by a fourth manual valve D21, and the second branch D3 is controlled by a second automatic valve D31. The second automatic valve D31 is connected to a time controller, and the time controller periodically controls the second automatic valve D31 to open to backwash the mud discharge pipe 700, thereby ensuring the smoothness of the mud discharge pipe 700.

[0040] Similarly, the second branch D3 further includes a fifth manual valve D32 and a sixth manual valve D33 located on both sides of the second automatic valve D31. When the system is working, the fifth manual valve and the sixth manual valve remain in a normally open state.

[0041] Example 2

[0042] This embodiment discloses a sewage treatment system, including the vertical flow sedimentation tank as described above.

[0043] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A vertical flow sedimentation tank, comprising a tank body, the lower part of which is a sludge hopper, characterized in that: Multiple layers of annular mud discharge pipes are arranged in sequence from top to bottom in the sludge hopper, and mud discharge holes are arranged on the mud discharge pipes. The mud discharge pipes in adjacent layers are connected to each other, and the mud discharge pipes in the lowest layer are connected to the discharge pipe, which extends out of the sludge hopper and is connected to the main discharge pipe. The main discharge pipe is provided with a first automatic valve for controlling its on and off, and the first automatic valve is connected to a time controller.

2. The vertical flow sedimentation tank according to claim 1, characterized in that: The sludge discharge pipes are three-layered and the height difference of adjacent layers is the same, and they are distributed at the upper, middle and lower positions of the sludge hopper.

3. The vertical flow sedimentation tank according to claim 1, characterized in that: The mud discharge hole is arranged on the mud discharge pipe at an angle of 45 degrees downward.

4. The vertical flow sedimentation tank according to claim 1, characterized in that: The mud discharge pipe is circular or square with rounded corners.

5. The vertical flow sedimentation tank according to claim 1, characterized in that: The mud discharge pipes of adjacent layers are connected by a plurality of mud discharge inclined pipes.

6. The vertical flow sedimentation tank according to claim 5, characterized in that: Each layer of the mud discharge pipe includes multiple sections of pipes, and the multiple sections of pipes are connected by pipe connectors and connected to the mud discharge inclined pipes through the pipe connectors.

7. The vertical flow sedimentation tank according to claim 1, characterized in that: The main discharge pipe is also connected to a discharge branch, and two connection points between the discharge branch and the main discharge pipe are located on both sides of the first automatic valve.

8. The vertical flow sedimentation tank according to claim 1, characterized in that: The main discharge pipe is also connected to a backwash pipeline, and the backwash pipeline is connected to a compressed air source.

9. The vertical flow sedimentation tank according to claim 8, characterized in that: The backwash pipeline includes a first branch and a second branch connected in parallel.

10. Sewage treatment system, characterized by: It comprises a vertical flow sedimentation tank as described in any one of claims 1 to 9.

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