Automatic collection device for leakage water of sludge discharge gallery of radial flow sedimentation tank

Abstract

The utility model discloses a kind of automatic collection devices of leakage water of radial flow sedimentation tank sludge discharge gallery, including sedimentation tank, annular water-collecting tank being located at its periphery, water inlet pipe being connected with water-collecting tank bottom, and gallery sewage inlet on the sewage collection pool of sludge discharge gallery bottom;The water inlet pipe is connected with the sedimentation tank water inlet of water jet through water inlet gate, nozzle, suction chamber, throat pipe and diffusion pipe are sequentially arranged in water jet, diffusion pipe is connected into sedimentation tank sludge discharge pipe by water jet outlet pipe;Gallery sewage inlet covers and intercepts impurity screen surface.When the water level of sedimentation tank is higher than the bottom of annular water-collecting tank 50cm, high-pressure water flow forms negative pressure through water jet, and leakage water of sewage collection pool is automatically extracted and pressurized and discharged into sludge discharge pipe.The device realizes zero energy consumption, fully-automatic anti-blocking operation, and completely solves the energy consumption and fault problem of electric pump pumping.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, specifically to an automatic collection device for seepage water in the sludge discharge channel of a radial flow sedimentation tank. Background Technology

[0002] Traditional sedimentation tank sludge discharge channel leakage water collection relies on submersible sludge pumps or manual pumping, which has the following drawbacks:

[0003] 1) The system is paralyzed during a power outage, and water leakage floods the electromechanical equipment;

[0004] 2) Electric pumps consume a lot of energy and require regular maintenance;

[0005] 3) Manual operation is inefficient and poses safety hazards.

[0006] This invention solves the above problems by utilizing the negative pressure extraction principle of a water jet injector and the natural water level difference in the sedimentation tank. Utility Model Content

[0007] The purpose of this invention is to provide an automatic collection device for seepage water in the sludge discharge channel of a radial flow sedimentation tank. This device operates automatically without power, thus solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automatic collection device for seepage water in the sludge discharge corridor of a radial flow sedimentation tank, comprising a sedimentation tank, an annular water collection trough surrounding the sedimentation tank, an inlet pipe connected to the bottom of the annular water collection trough, and the inlet pipe extending into the sludge discharge well of the sedimentation tank.

[0009] The vertical section of the inlet pipe is equipped with an inlet gate, and the outlet end of the inlet pipe is connected to the sedimentation tank inlet of the water jet; the suction chamber of the water jet is connected to the sewage inlet of the corridor, and the sewage inlet of the corridor is located on the sewage collection tank at the bottom of the sludge discharge corridor; the water jet is equipped with a nozzle, a throat and a diffuser in sequence, and the diffuser is connected to the water jet outlet pipe; one end of the water jet outlet pipe is connected to the water jet outlet and the other end is connected to the sedimentation tank sludge discharge pipe, and the sedimentation tank sludge discharge pipe is equipped with a sludge discharge gate.

[0010] Preferably, the vertical height difference between the bottom of the annular water collection trough and the water level of the sedimentation tank is ≥50cm.

[0011] Preferably, the sewage inlet of the corridor is covered with a mesh for intercepting impurities, with a mesh aperture of ≤5mm.

[0012] Preferably, the cross-sectional area of ​​the nozzle of the water jet is less than 1 / 3 of the cross-sectional area of ​​the inlet pipe.

[0013] Preferably, the water inlet gate and the sludge discharge gate are opened and closed in conjunction with a mechanical linkage.

[0014] The working process of this utility model is as follows:

[0015] When the sedimentation tank is in normal operation and its water level is 50cm higher than the bottom of the annular collection trough, the inlet gate is opened. Pressurized water from the sedimentation tank flows into the sedimentation tank water inlet of the water jet ejector through the inlet pipe at the bottom of the annular collection trough. The high-pressure water flow accelerates as it passes through the nozzle of the water jet ejector due to the sudden contraction of the flow cross-section, creating negative pressure in the suction chamber. If the water level in the sewage collection tank at the bottom of the sludge discharge corridor rises to submerge the sewage inlet of the corridor, the negative pressure draws out the seepage water from the sewage collection tank through this inlet. The mixed water flow is pressurized through the throat pipe and enters the diffuser pipe, then flows through the water jet ejector outlet pipe into the sedimentation tank sludge discharge pipe, and is finally discharged with the sludge discharge water. The entire process is driven by the natural water level difference in the sedimentation tank, requiring no external power, and the intercepting mesh at the sewage inlet of the corridor effectively prevents impurities from clogging the system.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) This utility model utilizes the natural height difference of ≥50cm between the water level of the sedimentation tank and the bottom of the annular water collection tank to form water pressure to drive the water jet, without the need for external power or human intervention, saving 100% energy compared to traditional electric pumps, and completely avoiding the risk of power outages.

[0018] (2) The water jet in this utility model has no moving parts. It achieves negative pressure extraction only through the flow channel structure of the nozzle, throat and diffuser, and there is no mechanical wear. The sewage inlet of the corridor is equipped with a ≤5mm diameter interception mesh to effectively prevent impurities from clogging and ensure the long-term operation of the device.

[0019] (3) In this utility model, the water inlet gate and the sludge discharge gate are opened and closed synchronously through mechanical linkage to achieve synchronous control function; after the seepage water is pressurized by the water jet throat pipe, it flows directly into the sedimentation tank sludge discharge pipe and is discharged externally using the existing sludge discharge system, without the need for additional pipeline laying, thus reducing construction costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure;

[0021] Figure 2 An enlarged view of the internal structure of the water jet injector;

[0022] In the diagram: 1-Sedimentation tank, 2-Annular water collection trough, 3-Inlet pipe, 4-Inlet gate, 5-Sludge discharge well, 6-Sludge discharge corridor, 7-Sedimentation tank sludge discharge pipe, 8-Water jet outlet pipe, 9-Corridor sewage inlet, 10-Water jet, 11-Sewage collection tank, 12-Sludge discharge gate, 13-Suction chamber, 14-Nose, 15-Throat, 16-Diffuser, 17-Sedimentation tank inlet, 18-Water jet outlet. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] like Figure 1-2 The device shown is an automatic collection device for seepage water in a radial flow sedimentation tank sludge discharge channel. It includes a sedimentation tank 1, an annular collection trough 2 surrounding the sedimentation tank 1, with a vertical height difference of ≥50cm between the bottom of the annular collection trough 2 and the water level in the sedimentation tank 1; an inlet pipe 3 is connected to the bottom of the annular collection trough 2, extending into the sedimentation tank sludge discharge well 5; an inlet gate 4 is provided on the vertical section of the inlet pipe 3, and the outlet end of the inlet pipe 3 is connected to the sedimentation tank inlet 17 of a water jet ejector 10; the suction chamber 13 of the water jet ejector 10 is connected to the sewage inlet 9 of the channel. The sewage inlet 9 is located on the sewage collection tank 11 at the bottom of the sludge discharge corridor 6, and is covered with a mesh screen for intercepting impurities with a mesh aperture of ≤5mm. Meanwhile, the water jet ejector 10 contains a nozzle 14, a throat 15, and a diffuser 16 in sequence. The cross-sectional area of ​​the nozzle 14 is less than 1 / 3 of the cross-sectional area of ​​the inlet pipe 3. The diffuser 16 connects to the water jet ejector outlet pipe 8. One end of the water jet ejector outlet pipe 8 is connected to the water jet ejector outlet 18, and the other end is connected to the sedimentation tank sludge discharge pipe 7. The sedimentation tank sludge discharge pipe 7 is equipped with a sludge discharge gate 12. The inlet gate 4 and the sludge discharge gate 12 are opened and closed in conjunction with a mechanical linkage.

[0025] The working process of this utility model is as follows:

[0026] When sedimentation tank 1 is in normal operation and its water level is 50cm higher than the bottom of the annular collection trough 2, the inlet gate 4 is opened. Pressurized water in sedimentation tank 1 flows into the sedimentation tank inlet 17 of the water jet injector 10 through the inlet pipe 3 at the bottom of the annular collection trough 2. The high-pressure water flow is accelerated by the sudden contraction of the flow cross section when passing through the nozzle 14 of the water jet injector 10, forming a negative pressure in the suction chamber 13. At this time, if the water level of the sewage collection tank 11 at the bottom of the sludge discharge corridor 6 rises to submerge the sewage inlet 9 of the corridor, the negative pressure draws out the seepage water in the sewage collection tank 11 through the inlet 9. The mixed water flows through the throat pipe 15 for pressurization and enters the diffuser pipe 16, then flows through the water jet injector outlet pipe 8 into the sedimentation tank sludge discharge pipe 7, and is finally discharged with the sludge discharge water. The entire process is driven by the natural water level difference of sedimentation tank 1, without the need for external power, and the intercepting mesh at the sewage inlet 9 of the corridor can effectively prevent impurities from clogging the system.

[0027] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field, other equivalent modifications and improvements can be made, and these should also be considered within the protection scope of this utility model.

Claims

1. A kind of automatic collection device of effluent water of radial flow sedimentation tank sludge discharge gallery, it is characterized in that: It includes a sedimentation tank (1), and an annular water collection trough (2) is provided around the sedimentation tank (1). The bottom of the annular water collection trough (2) is connected to an inlet pipe (3), which extends into the sedimentation tank sludge discharge well (5). The vertical section of the inlet pipe (3) is equipped with an inlet gate (4), and the outlet end of the inlet pipe (3) is connected to the sedimentation tank inlet (17) of the water jet (10); the suction chamber (13) of the water jet (10) is connected to the sewage inlet (9) of the corridor, and the sewage inlet (9) of the corridor is located on the sewage collection tank (11) at the bottom of the sludge discharge corridor (6); the water jet (10) is equipped with a nozzle (14), a throat (15) and a diffuser (16) in sequence, and the diffuser (16) is connected to the water jet outlet pipe (8); one end of the water jet outlet pipe (8) is connected to the water jet outlet (18), and the other end is connected to the sedimentation tank sludge discharge pipe (7), and the sedimentation tank sludge discharge pipe (7) is equipped with a sludge discharge gate (12).

2. The automatic leakage water collecting device for sludge gallery of radial flow sedimentation tank according to claim 1, characterized in that: The vertical height difference between the bottom of the annular water collection tank (2) and the water level of the sedimentation tank (1) is ≥50cm.

3. An automatic collection device for seepage water from the sludge discharge channel of a radial flow sedimentation tank according to claim 1 or 2, characterized in that: The sewage inlet (9) of the corridor is covered with a mesh for intercepting impurities, with a mesh diameter of ≤5mm.

4. The automatic collection device for seepage water in the sludge discharge channel of a radial flow sedimentation tank according to claim 3, characterized in that: The cross-sectional area of ​​the nozzle (14) of the water jet (10) is less than 1 / 3 of the cross-sectional area of ​​the inlet pipe (3).

5. The automatic collection device for seepage water in the sludge discharge channel of a radial flow sedimentation tank according to claim 4, characterized in that: The water inlet gate (4) and the mud discharge gate (12) are opened and closed in conjunction with each other via a mechanical linkage.

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