Leachate suction backflow prevention device

Abstract

The utility model relates to a percolate suction backflow prevention device which comprises a suction pump and a siphon tank which are arranged on the ground and connected with each other, the water inlet end of the siphon tank is connected with a percolate adjusting pool through a suction pipe, the suction pipe is provided with a control valve, the control valve is electrically connected with the suction pump through a control unit, and the control unit is electrically connected with the suction pump. The control unit receives a shutdown signal of the suction pump and drives the control valve to be closed; and a water adding opening in the top of the siphon tank is connected with the water inlet assembly. The device is reasonable in structural design, and the control valve is arranged on the suction pipe and is controlled to be closed after the suction pump stops, so that the suction pipe is blocked, the percolate in the suction pipe is prevented from flowing back into the percolate adjusting tank, and the suction resistance of the next time is reduced; meanwhile, the water adding opening in the top of the siphon tank is connected with the water inlet assembly, water is poured into the siphon tank through the water inlet assembly, manual water pouring is not needed, and the operation convenience is effectively improved.

Description

Technical field:

[0001] The utility model relates to a leachate suction backflow prevention device. Background technology:

[0002] At present, many leachate regulating pools are directly excavated on the ground. The leachate regulating pool can reach three meters or even deeper. In order to regularly extract the leachate in the leachate regulating pool, a suction pump is usually installed on the ground. The water inlet end of the suction pump extends into the leachate regulating pool through the water inlet pipe, and the leachate is sucked up by the suction pump. However, due to the deep depth of the leachate regulating pool, the suction resistance of the suction pump is large, and it is easy to have the problem of not being able to be sucked up. After each suction is completed, the leachate in the water inlet pipe will flow back into the leachate regulating pool, which results in the need to pump water before the next suction pump works, which is not convenient to use. In order to solve this technical problem, a siphon tank is currently added to the water inlet end of the suction pump. After the siphon tank is filled with water, there is no need to pump water before starting the suction pump each time. However, in actual use, after a suction is completed, the leachate in the water inlet pipe connected to the water inlet end of the siphon tank will also flow back into the leachate regulating tank, and the siphon tank needs to be filled with water manually before starting the suction pump each time, which is still not convenient enough. Therefore, it is necessary to improve this technical problem, and this case was born. Utility model content:

[0003] The utility model makes improvements on the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the utility model is to provide a leachate suction and backflow prevention device with reasonable design, high efficiency and convenience.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a leachate suction backflow prevention device, comprising a suction pump and a siphon tank arranged on the ground and connected to each other, the water inlet end of the siphon tank is connected to the leachate regulating tank through a suction pipe, and a control valve is arranged on the suction pipe, and the control valve is electrically connected to the suction pump through a control unit, and the control unit receives a signal of stopping the suction pump and drives the control valve to close; the water inlet at the top of the siphon tank is connected to the water inlet assembly.

[0005] Furthermore, the control valve is a water inlet solenoid valve.

[0006] Furthermore, the water inlet assembly includes a water inlet pipe and a water inlet pump, one end of the water inlet pipe is connected to the water inlet at the top of the siphon tank, the other end of the water inlet pipe is connected to the water outlet of the water inlet pump, and the water inlet end of the water inlet pump is connected to the water source through a pipeline.

[0007] Furthermore, the siphon tank includes a tank body and a tank cover arranged on the top of the tank body. A circular cleaning pipe is arranged at the upper end of the interior of the tank body. The cleaning pipe is arranged horizontally. A plurality of water outlet nozzles uniformly distributed in a circle around the axis of the cleaning pipe are installed at the bottom of the cleaning pipe. The cleaning pipe is connected to the water outlet end of the water inlet pump through a water supply pipe.

[0008] Furthermore, a water inlet valve is installed on the water inlet pipe, and a water delivery valve is installed on the water delivery pipe.

[0009] Furthermore, a ring-shaped supporting flange is fixed to the middle of the inner side wall of the tank body, and a filter screen is arranged on the supporting flange, and the filter screen is arranged horizontally.

[0010] Compared with the prior art, the utility model has the following effects: the utility model has a reasonable structural design, and a control valve is arranged on the suction pipe, and the control valve is closed after the suction pump is shut down to block the suction pipe, thereby reducing the reflux of leachate in the suction pipe to the leachate regulating tank, and reducing the resistance to the next suction; at the same time, the water inlet at the top of the siphon tank is connected to the water inlet assembly, and water is filled into the siphon tank through the water inlet assembly, without the need for manual filling, which effectively improves the convenience of operation. Description of the drawings:

[0011] Figure 1 It is a schematic diagram of the main structure of an embodiment of the utility model;

[0012] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model. Specific implementation method:

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 should not be understood as a limitation on the present invention.

[0015] Embodiment 1: Figures 1-2As shown, the utility model is a leachate suction backflow prevention device, comprising a suction pump 1 and a siphon tank 2 arranged on the ground, the water inlet end of the suction pump 1 is connected to the water outlet end of the siphon tank 2, the water inlet end of the siphon tank 2 is connected to the suction pipe 3, the suction pipe 3 extends into a leachate regulating tank 4 formed by digging downward from the ground, so that the water inlet end of the siphon tank is connected to the leachate regulating tank. When the suction pump is working, due to the existence of the siphon tank, a continuous pressure difference is formed, so that the suction pump on the ground can easily suck up the leachate in the leachate regulating tank. The suction pipe 3 is provided with a control valve 5, and the control valve 5 is electrically connected to the suction pump 1 through a control unit 6. The control unit 6 receives a signal of stopping the suction pump 1 and drives the control valve 5 to close, so as to block the suction pipe and reduce the reflux of the leachate in the suction pipe into the leachate regulating tank; the water inlet 7 at the top of the siphon tank 2 is connected to the water inlet component, and the water inlet component can fill water into the siphon tank through the water inlet.

[0016] It should be noted that the structure of combining a suction pump with a siphon tank for suction is an existing mature technology, and its specific structure, connection relationship and working principle will not be repeated here.

[0017] In this embodiment, for the convenience of control, the control valve 5 adopts a water inlet electromagnetic valve. The control unit can adopt a single chip microcomputer or a PLC. After the suction pump stops, the control unit receives a stop signal, and then the control unit drives the control valve to close. It should be noted that the control valve is in an open state under normal conditions so that the suction pump can suck the leachate.

[0018] In this embodiment, the water inlet assembly includes a water inlet pipe 8 and a water inlet pump 9. One end of the water inlet pipe 8 is connected to the water inlet 7 at the top of the siphon tank 2, and the other end of the water inlet pipe 8 is connected to the water outlet of the water inlet pump 9. The water inlet end of the water inlet pump 9 is connected to a water source (such as a water tank) through a pipeline. When working, before the suction pump 1 pumps for the next time, the water inlet pump 9 transports the water at the water source to the siphon tank 2 through the water inlet pipe 8 to fill the siphon tank with water. It should be noted that a liquid level gauge can be set in the siphon tank, and the liquid level gauge is connected to the water inlet pump through a control unit. After the siphon tank is filled with water, the liquid level gauge detects the corresponding water level and sends a signal to the control unit. After receiving the signal from the liquid level gauge, the control unit controls the water inlet pump to stop working.

[0019] In this embodiment, a control switch electrically connected to the control unit 6 is also included. Before the leachate is sucked, the control switch is turned on, and the control unit 6 first controls the water inlet pump 9 to work, and fills the siphon tank 2 with water through the water inlet pump 9. Then the water inlet pump 9 stops working, and the control unit 6 drives the control valve 5 to open and the suction pump 1 to start, and the suction pump 1 can normally suck the leachate from the leachate regulating tank 4.

[0020] Embodiment 2: The difference between this embodiment and embodiment 1 is that a cleaning component is added to clean the siphon tank. Specifically, the siphon tank 2 includes a tank body 10, a tank cover 11 arranged on the top of the tank body 10, and a circular cleaning pipe 12 is arranged at the upper end of the tank body 10. The cleaning pipe 12 is arranged horizontally, and a plurality of water outlet nozzles 13 are installed at the bottom of the cleaning pipe 12, which are evenly distributed around the axis of the cleaning pipe 12. The water outlet nozzles 13 are arranged obliquely and face the inner wall of the tank body. The cleaning pipe 12 is connected to the water outlet end of the water inlet pump 9 through a water delivery pipe 14. The cleaning pipe 12, the water outlet nozzles 13 and the water delivery pipe 14 constitute a cleaning component. When working, the water inlet pump delivers water to the cleaning pipe through the water delivery pipe, and then sprays water to the side wall of the siphon tank body through the water outlet nozzle to achieve cleaning.

[0021] In this embodiment, a water inlet valve 15 is installed on the water inlet pipe 8, and a water delivery valve 16 is installed on the water delivery pipe 14. When the siphon tank is filled with water, the water inlet valve is opened and the water delivery valve is closed; when the inner wall of the siphon tank needs to be cleaned, the water inlet valve is closed and the water delivery valve is opened.

[0022] Embodiment 3: The difference between this embodiment and embodiment 1 is that a filter screen is added to filter the debris (such as large particles, plastic bags, etc.) mixed in the leachate. Specifically: a ring-shaped support flange 17 is fixed to the middle of the inner side wall of the tank body 10, and a filter screen 18 is arranged on the support flange 17. The filter screen is arranged horizontally. It should be noted that the filter screen is placed on the support flange. After the siphon tank is finished working, the tank cover is opened, the filter screen is hooked with the help of a hook, and then the filter screen is hoisted out of the tank body, so that the debris remaining on the filter screen can be cleaned manually later.

[0023] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).

[0024] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0025] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A leachate suction backflow prevention device, comprising a suction pump and a siphon tank arranged on the ground and connected to each other, wherein the water inlet end of the siphon tank is connected to a leachate regulating tank through a suction pipe, characterized in that: The suction pipe is provided with a control valve, which is electrically connected to the suction pump through a control unit. The control unit receives a signal of stopping the suction pump and drives the control valve to close. The water inlet at the top of the siphon tank is connected to the water inlet assembly. The water inlet assembly includes a water inlet pipe and a water inlet pump, one end of the water inlet pipe is connected to the water inlet at the top of the siphon tank, the other end of the water inlet pipe is connected to the water outlet of the water inlet pump, and the water inlet end of the water inlet pump is connected to the water source through a pipeline; The siphon tank includes a tank body and a tank cover arranged on the top of the tank body. A circular cleaning pipe is arranged at the upper end of the inner part of the tank body. The cleaning pipe is arranged horizontally. A plurality of water outlet nozzles uniformly distributed in a circle around the axis of the cleaning pipe are installed at the bottom of the cleaning pipe. The cleaning pipe is connected to the water outlet end of the water inlet pump through a water supply pipe.

2. The leachate suction backflow prevention device according to claim 1, characterized in that: The control valve is a water inlet solenoid valve.

3. The leachate suction backflow prevention device according to claim 1, characterized in that: The water inlet pipe is provided with a water inlet valve, and the water delivery pipe is provided with a water delivery valve.

4. The leachate suction backflow prevention device according to claim 1, characterized in that: A ring-shaped supporting flange is fixed to the middle of the inner side wall of the tank body, and a filter screen is arranged on the supporting flange. The filter screen is arranged horizontally.

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