CN111636453A - An automatic drainage device for foundation pit - Google Patents

Abstract

The invention discloses an automatic drainage device for foundation pit, belonging to the technical field of water supply and drainage devices. The automatic drainage device for foundation pit comprises a drainage ditch arranged at the bottom of the foundation pit, a water pump controller arranged at the top of the foundation pit and a drainage pipe. One end of the drainage ditch is provided with a sump communicated with the drainage ditch, and a liquid level controller and a submersible pump are arranged in the sump, and both the liquid level controller and the submersible pump are connected with the water pump controller. Electrically connected, one end of the drainage pipe is connected to the submersible pump, and the other end extends out of the foundation pit. The foundation pit automatic drainage device is provided with a drainage ditch and a sump pit at the bottom of the foundation pit, and collects the accumulated water into the sump pit, and finally the submersible pump discharges the accumulated water in the sump pit to the outside of the foundation pit, and at the same time , The liquid level controller can monitor the liquid level in the sump and transmit the electrical signal to the water pump controller. The water pump controller starts and stops the submersible pump according to the transmission signal of the liquid level controller.

Description

An automatic drainage device for foundation pit

technical field

The invention relates to the technical field of water supply and drainage devices, in particular to an automatic drainage device for foundation pits.

Background technique

At present, in construction, foundation pit excavation is an important construction procedure for modern large-scale buildings. In the construction of foundation pit engineering, it is necessary to do a good job of drainage protection work on the foundation pit, so as to avoid the rainy season, when the amount of precipitation is large, and the outside of the foundation pit The rainwater pours into the foundation pit, and the long-term storage of water in the foundation pit will affect the foundation of the foundation pit. At the same time, the water in the foundation pit needs to be discharged in time, otherwise it will affect the construction progress.

However, at present, there are two ways to solve this problem. First, no drainage ditch is set in the foundation pit. After rain, if there is a large amount of water in the foundation pit, the water will be discharged through the water pump; There is a drainage ditch in the pit, but it cannot monitor the water level of the drainage ditch. When the water accumulates to a certain level, it needs to be removed in time. This requires the staff to check the water status from time to time, and to bring the water to the staff from time to time. The inconvenience made the work of the staff more arduous.

Therefore, how to provide an automatic drainage device capable of automatically monitoring the water level in the drainage ditch and automatically discharging the accumulated water out of the foundation pit when the water level in the drainage ditch reaches a certain height is an urgent problem for those skilled in the art to solve.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an automatic drainage device for a foundation pit, which solves the problem that the accumulated water in the drainage ditch in the foundation pit can be discharged automatically and timely, and at the same time, smooth drainage can be ensured.

In order to achieve the above object, the present invention adopts the following technical solutions:

An automatic drainage device for a foundation pit, comprising: a drainage ditch arranged at the bottom of the foundation pit, a water pump controller and a drainage pipe arranged at the top of the foundation pit, and one end of the drainage ditch is provided with a sump communicated with the drainage ditch , a liquid level controller and a submersible pump are arranged in the sump, the liquid level controller and the submersible pump are both electrically connected with the water pump controller, and one end of the drain pipe is connected with the submersible pump, Its other end extends out of the foundation pit.

Further, it also includes a filter screen, the filter screen is arranged at the connection between the drainage ditch and the sump, and the filter screen is detachably connected to the drainage ditch.

Further, the bottom of the drainage ditch is arranged with a certain slope, and the end close to the water collection pit is lower than the end away from the water collection pit.

Further, the drain pipe is provided with a check valve for preventing backflow.

Further, the outer cover of the submersible pump is provided with a protective fence, and the bottom of the protective fence is fixedly connected with the bottom of the sump.

It can be seen from the above technical solutions that, compared with the prior art, the present invention provides an automatic drainage device for foundation pits. By providing a drainage ditch at the bottom of the foundation pit, the water in the foundation pit can flow into the drainage ditch, and the water in the foundation pit can flow into the drainage ditch. It is collected from the drainage ditch to the sump, and finally the submersible pump in the sump discharges the accumulated water in the sump to the outside of the foundation pit. At the same time, the liquid level in the sump can be monitored by the liquid level controller. The liquid level controller is provided with a pump start water level line and a pump stop water level line. At the same time, the liquid level controller transmits electrical signals to the water pump controller, and the water pump controller starts and stops the submersible pump according to the transmission signal of the liquid level controller. , Through the setting of the liquid level controller and the water pump controller, there is no need for personnel to observe the height of the water level in the sump. After reaching a certain level, the automatic drainage of the device can be realized.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

Fig. 1 accompanying drawing is the overall structure schematic diagram of the foundation pit automatic drainage device provided by the present invention;

Fig. 2 accompanying drawing is the internal structure schematic diagram of the sump provided by the present invention;

FIG. 3 is a schematic diagram of the internal structure of part A provided by the present invention.

Among them: 1 is the foundation pit; 2 is the drainage ditch; 3 is the sump; 4 is the drain pipe; 5 is the submersible pump; 6 is the check valve; 7 is the protective fence; 8 is the filter; 9 is the control line; 10 11 is the water pump controller; 12 is the liquid level controller; 13 is the pump start water level line; 14 is the pump stop water level line.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-3, an embodiment of the present invention discloses an automatic drainage device for a foundation pit, comprising: a drainage ditch 2 arranged at the bottom of the foundation pit 1, a water pump controller 11 arranged at the top of the foundation pit 1, and a drainage pipe 4, One end of the drainage ditch 2 is provided with a sump 3 that communicates with the drainage ditch 2. The top elevation of the sump 3 is higher than the bottom elevation of the foundation pit 1 to prevent the rainwater in the foundation pit 1 from directly flowing into the sump from the upper end of the sump 3. In the pit 3, a liquid level controller 12 and a submersible pump 5 are arranged in the sump 3, wherein the submersible pump 5 is arranged at the bottom of the sump 3, and the liquid level controller 12 is arranged on a side wall of the sump 3 Above, the liquid level controller 12 is provided with a pump start water level line 13 and a pump stop water level line 14, the pump start water level line 13 is located above the pump stop water level line 14, and the liquid level controller 12 and the water pump controller 11 pass through the control line 9 Electrical connection, the water pump controller 11 and the submersible pump 5 are electrically connected through the water pump power line 10, the lower end of the drain pipe 4 is connected to the submersible pump 5, the upper end of the drain pipe 4 extends to the outside of the foundation pit 1, The backflow check valve 6 enables the water flow direction in the drain pipe 4 to be discharged only in the direction of the arrow in FIG. 3 .

Specifically, it also includes a filter screen 8, the filter screen 8 is arranged at the connection between the drainage ditch 2 and the sump 3, and the filter screen 8 is detachably connected to the drainage ditch 2, wherein the hole diameter of the filter screen 8 is smaller than the diameter of the soil particles, Prevent soil particles from entering the sump 3 and cause damage to the liquid level controller 12 and the submersible pump 5 in the sump 3 .

Specifically, the bottom of the drainage ditch 2 is set at a certain slope, and the end close to the sump 3 is lower than the end far from the sump 3. In this embodiment, the slope is specifically set to 4°, and in other embodiments, the slope is Different angles can be set according to actual needs.

Specifically, the outer cover of the submersible pump 5 is provided with a protective fence 7 , and the bottom of the protective fence 7 is fixedly connected with the bottom of the sump 3 , wherein the use of the protective fence 7 conforms to the safe use regulations of the submersible pump 5 .

Working principle: The water in the foundation pit flows into the drainage ditch, and then flows into the sump through the filter screen. When the accumulated water exceeds the water level of the pump, the liquid level controller transmits an electrical signal to the water pump controller, and the water pump controller controls the submersible pump. Start to work and discharge the accumulated water in the sump. When the liquid level in the sump drops to the pump stop level, the liquid level controller transmits an electrical signal to the pump controller, and the pump controller controls the submersible pump to stop working.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. The utility model provides an automatic drainage device of foundation ditch which characterized in that includes: set up escape canal (2), water pump controller (11) and drain pipe (4) of setting at foundation ditch (1) top in foundation ditch (1) bottom, the one end of escape canal (2) be equipped with sump pit (3) of escape canal (2) intercommunication, be equipped with liquid level controller (12) and immersible pump (5) in sump pit (3), liquid level controller (12) with immersible pump (5) all with water pump controller (11) electricity is connected, the one end of drain pipe (4) with immersible pump (5) are connected, and its other end extends to outside foundation ditch (1).

2. The automatic foundation pit drainage device according to claim 1, further comprising a filter screen (8), wherein the filter screen (8) is arranged at the joint of the drainage ditch (2) and the water collection pit (3), and the filter screen (8) is detachably connected with the drainage ditch (2).

3. An automatic foundation pit drainage device according to claim 1, characterized in that the bottom of the drainage ditch (2) is arranged at a certain slope, and one end close to the water collection pit (3) is lower than the other end far away from the water collection pit (3).

4. An automatic drainage device for foundation pit according to claim 1, characterized in that the drain pipe (4) is provided with a check valve (6) for preventing backflow.

5. The automatic foundation pit drainage device according to claim 1, wherein the submersible pump (5) is externally covered with a protective fence (7), and the bottom of the protective fence (7) is fixedly connected with the bottom of the water collection pit (3).

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