JP3244156U - Positive and negative pressure linkage device used to lower water level in deep wells - Google Patents

Abstract

The present invention provides a positive and negative pressure cooperation device used for lowering the water level of a deep well, which has the advantage of high water level lowering efficiency. SOLUTION: A deep well pipe 1 disposed in a deep well; an air supply system 2 including an air supply pipe 22 with one end extending into the deep well pipe and located below the liquid level of the deep well pipe; A pumping system 3 including a pumping pipe 31 extending into the deep well pipe and located below the liquid level of the deep well pipe, and a bleed pipe having one end extending into the deep well pipe and located above the liquid level of the deep well pipe. The bleed system further includes a bleed pump installed outside the deep well tube, connected to the bleed tube, and extracting gas in the deep well tube via the bleed tube. [Selection diagram] Figure 1

Description

This utility model relates to the technical field of construction, and in particular to a positive and negative pressure linkage device used for lowering the water level in deep wells.

Excavation of deep foundation shaft is an important construction process of underground structures of modern large buildings, and lowering the groundwater level in the foundation shaft is also called groundwater control, that is, in the construction of foundation shaft construction, lowering the groundwater level By lowering the depth, the requirements for excavation of the supporting structure and foundation shaft can be met.The higher the groundwater level in the construction environment, the deeper the required depth of the ground, and the more difficult the construction.

A water level lowering well (deep well) is installed inside the foundation shaft to lower the water level in the foundation shaft.First, a deep well is dug, a well pipe with the same length as the depth of the well is installed inside the deep well, and the inner wall of the deep well is A sand well is constructed by filling the space between the outer wall of the well pipe and the outer wall of the well pipe, and a well cover is provided on the well pipe, and the vacuum water pipe for the negative pressure system and the air branch pipe for the positive pressure system are passed through the well pipe and penetrated into the well pipe. and lower the water level. For example, a patent with publication number CN204080838U describes filling air into a deep well tube assembly via a positive pressure system to reduce the density of water such that a negative pressure system extracts water within the deep well tube assembly. A device for lowering the water level of a deep well using a negative pressure air jet in a foundation well is disclosed.

The existing technical solutions mentioned above have the following deficiencies. The positive pressure system fills the air inside the deep well pipe assembly, and some air does not dissolve in the water, so the air pressure in the deep well pipe assembly increases, and the ground water in the accessories of the deep well pipe assembly flows into the deep well pipe assembly. It is disadvantageous for deep wells to enter the deep well, and reduces the rate of water level decline in deep wells. The vent hole on the well cap can alleviate the problem of too much air pressure inside the deep well tube assembly, but the vent hole cannot make the air pressure inside the deep well tube assembly negative, so The rate at which accessory groundwater enters the deep well pipe assembly is reduced, reducing the rate of water level decline in the deep well.

Based on the above problems, the present utility model aims to provide a positive and negative pressure cooperation device used for lowering the water level of a deep well, which has the advantage of high water level lowering efficiency.

The above utility model purpose of this utility model is achieved by the following technical proposal.

A positive and negative pressure cooperation device used for lowering the water level of a deep well, the positive and negative pressure cooperation device comprising:
A deep well pipe placed in a deep well,
an air delivery system including an air delivery pipe with one end extending into the deep well pipe and located below the liquid level of the deep well pipe;
a pumping system including a pumping pipe with one end extending into the deep well pipe and located below the liquid level of the deep well pipe;
an air bleed system including an air bleed pipe having one end extending into the deep well tube and positioned above the liquid level of the deep well tube.

The utility model further provides that the bleed system further includes a bleed pump that is installed outside the deep well tube, is connected to the bleed tube, and extracts gas in the deep well tube via the bleed tube. It is being

The utility model further provides that the pumping system further includes a pump that is installed outside the deep well pipe, is connected to the pumping pipe, and extracts water in the deep well pipe via the pumping pipe. It is being

The present utility model further provides that the air supply system further includes an air supply device provided outside the deep well pipe, connected to the air pipe, and feeding gas into the deep well pipe via the air pipe. It is provided.

The utility model further includes a control unit connected to the control ends of the air supply system, the water pumping system, and the air extraction system, respectively, and for individually controlling the air delivery system, the water pumping system, and the air extraction system. It is further provided to include.

The utility model further includes a first vacuum gauge, wherein the pumping system includes a pump, and the first vacuum gauge is connected to the pump and the control unit. .

The utility model further includes a second vacuum gauge, and is further provided such that the second vacuum gauge is connected to the deep well tube and the control unit.

In the present utility model, the deep well pipe includes a pipe body and a pipe cover that is hermetically connected to the pipe body, and the pipe cover has holes through which the air supply pipe, the water pumping pipe, and the air extraction pipe pass. and the tube caps are further provided in sealing connection with the air supply pipe, the lift pipe and the air bleed pipe, respectively.

In the present utility model, a filtering hole is formed in the peripheral wall of the tubular body, and the tubular body is further provided so as to communicate with a deep well through the filtering hole.

In this utility model, the pipe body is provided with a filter located below the liquid level of the pipe body, and both the air supply pipe and the water pump pipe extend into the filter and are connected to the filter. Further provisions are made as shown.

Effect of utility model

To summarize the above, the beneficial effects of this utility model are as follows.

This utility model provides a positive and negative pressure coordination device used for lowering the water level in deep wells. The device is capable of pumping gas into the water in the deep well pipe through an air supply system, so that the gas and water form a water-gas mixture, reducing the density of the water, and removing the water-gas mixture from the deep well pipe through the pumping system. Because the gas is not completely dissolved in water, some of the gas overflows from the water and remains in the deep well pipe during the actual construction process, and some of the gas is located above the water surface. This increases the pressure inside the deep well pipe, which is disadvantageous for water near the deep well pipe to enter the deep well pipe. Compared to the past, this project is equipped with an air bleed system, which extracts gas that is insoluble in water, which reduces the pressure inside the deep well pipe and even creates a negative pressure, causing the water near the deep well pipe to facilitates the entry of water into the deep well pipe, and facilitates the air supply system and the pumping system to cooperate with each other to extract water within the deep well pipe, thereby lowering the water level within the deep well pipe and increasing the water level within the deep well pipe. This will help improve the rate of water level decline in wells and improve the efficiency of construction work.

In order to better understand and implement the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings.

The drawings are for illustrative purposes only and should not be construed as limiting the invention. In order to better explain the embodiments, some elements in the drawings may be omitted, enlarged or reduced in size and do not represent the actual product size, and it will be appreciated by those skilled in the art that some elements in the drawings may be omitted, enlarged or reduced in size and do not represent the actual product size. It can be understood that well-known structures and their descriptions may be omitted.
FIG. 2 is a schematic structural diagram of the device of the present utility model.

1, Deep well pipe; 11, Pipe body; 111, Filter hole; 12, Pipe cover; 2, Air supply system; 21, Air supply pipe; 22, Air supply device; 3, Pumping system; 31, Pumping pipe; 32, Lifting pump; 4, bleed system; 41, bleed pipe; 42, bleed pump; 5, first vacuum gauge; 6, second vacuum gauge; 7, filter; 8, floor surface; 9, drainage ditch.

Form for implementing a utility model

Orientation terms such as top, bottom, left, right, front, back, front, back, top, bottom, etc. that are or may be referred to herein are defined with respect to the structure. and they are relative concepts. Therefore, it may change depending on the position and usage condition. Accordingly, these or other orientation terms should not be construed as limiting terms.

The embodiments described in the illustrative examples below are not representative of all embodiments consistent with this disclosure. On the contrary, these are merely examples of embodiments consistent with certain aspects of this disclosure.

The terminology used in this disclosure is for the purpose of describing particular examples only and is not intended to limit the disclosure. As used in this disclosure, the singular forms "a," "aforesaid," and "the" are intended to include the plural unless the context clearly dictates otherwise. It should be noted that the term "and/or" as used herein is meant to include any or all possible combinations of one or more of the associated listed items.

This utility model will be explained in more detail below with reference to the drawings.

Referring to FIG. 1, this utility model discloses a positive and negative pressure cooperation used for lowering the water level of a deep well, including a deep well pipe 1, an air supply system 2, a water pumping system 3, and an air extraction system 4. The deep well pipe 1 is placed in the deep well on the floor 8 of the foundation shaft, and the air supply system 2 includes an air pipe 21 and an air supply device 22, and the air supply device 22 is arranged in the deep well on the floor 8 of the foundation shaft. The air supply device 22 is provided outside the pipe 1 and is connected to the air pipe 21. The air supply device 22 sends gas (usually air) into the deep well pipe 1 through the air pipe 21, and the air supply device 22 is connected to the air pipe 21. One end of 21 extends into the deep well tube 1 and is located below the liquid level (water surface) of the deep well tube 1, so that the air that the air supply device 22 sends into the deep well tube 1 through the air tube 21 and The water mixes to form a water-gas mixture, which serves to reduce the density of the water, and the air delivery device 22 may be an air compressor; the air delivery device 22 may be an air pump; The air device 22 may be another device that can feed air into the deep well tube 1 via the air pipe 21. The pumping system 3 includes a pumping pipe 31 and a pumping pump 32. One end of the pumping pipe 31 extends into the deep well pipe 1 and is located below the liquid level of the deep well pipe 1. A lift pump 32 is installed outside the pipe 1 and is connected to the other end of the water pipe 31. The water pump 32 extracts water from the deep well pipe 1 through the water pipe 31. A drainage ditch 9 located outside the mine is further provided, and the water pump 32 discharges water extracted from the inside of the deep well pipe 1 to the drainage ditch 9 via the pipe. The bleed system 4 includes an bleed pipe 41 and a bleed pump 42. One end of the bleed pipe 41 extends into the deep well pipe 1 and is located above the liquid level of the deep well pipe 1. The bleed pump 42 is provided outside the well pipe 1 and is connected to the other end of the bleed pipe 41. The bleed pump 42 extracts the gas in the deep well pipe 1 through the bleed pipe 41, The atmospheric pressure inside the deep well pipe 1 becomes small, and even becomes a negative pressure, making it easier for water near the deep well pipe 1 to enter the deep well pipe 1.

In this case, the air supply system 2 feeds gas into the water in the deep well pipe 1, so that the gas and water form a water-gas mixture, which reduces the density of the water, and the pumping system 3 pumps gas into the water-gas mixture. Since the gas is not completely dissolved in the water, some of the gas overflows from the water and remains in the deep well pipe 1 during the actual construction process. The gas is located above the water surface, increasing the pressure inside the deep well tube 1, which is disadvantageous for water near the deep well tube 1 to enter the deep well tube 1. Compared to the conventional method, the present invention is equipped with an air bleed system 4, which extracts water-insoluble gas, thereby reducing the pressure inside the deep well pipe 1 and further reducing the pressure to a negative pressure. facilitating water in the vicinity of the well pipe 1 to enter into the deep well pipe 1 and facilitating mutual cooperation between the air supply system 2 and the water pumping system 3 to extract water within the deep well pipe 1; Thereby, it is possible to lower the water level in the deep well pipe 1 and improve the water level lowering speed of the deep well, which is useful for improving the efficiency of construction work. In addition, since the depth of a deep well is usually 8 meters to 15 meters, the length of the deep well pipe 1 is usually 8 meters to 15 meters, and the length of the deep well pipe 1 is 15 meters or more. In some cases, the length of the deep well pipe 1 is long, and slurry is mixed with the water in the deep well, so if the water is pumped with a high-power water pump, the cost of lowering the water level in the deep well will only increase. Otherwise, high-power water pumps are more likely to be damaged.

Some embodiments further include a control unit, the control unit being connected to the control ends of the air supply system 2, the pumping system 3 and the air extraction system 4, respectively, i.e. , are connected to the air supply device 22, the water pump 32, and the air bleed pump 42, respectively, so as to control the water pumping system 3 and the air bleed system 4, respectively, to extract the water in the deep well pipe 1. By extracting the air from 1 and supplying the air to the deep well pipe 1 by the air supply system 2, the degree of vacuum of the deep well pipe 1 is dynamically controlled, and the water in the deep well pipe 1 is pumped by the water pumping system 3. Improve the extraction efficiency and improve the water level lowering efficiency of deep wells. It further includes a first vacuum gauge 5 and a second vacuum gauge 6, and the first vacuum gauge 5 is connected to the water pump 32 and is used to detect the pressure and degree of vacuum when water is pumped by the water pump 32. The first vacuum gauge 5 is connected to a control unit, and the control unit reads the detected value of the first vacuum gauge 5 and controls the air flow into the deep well tube 1 of the air supply system 2 based on the detected value. The control unit reads the detected value of the first vacuum gauge 5 and controls the air supply system 2 based on the detected value, which has not been achieved by the prior art. Ru. The second vacuum gauge 6 is connected to the deep well tube 1 and is used to detect the atmospheric pressure of the deep well tube 1, and the second vacuum gauge 6 is connected to a control unit, and the control unit It is used to read the detected value of the second vacuum gauge 6 and to control the air bleed system 4 based on the detected value to extract the air inside the deep well tube 1. The reading of the detected value and the control of the bleed air system 4 based on the detected value are accomplished by prior art.

In some embodiments, the deep well pipe 1 includes a pipe body 11 and a pipe cap 12 that is sealingly connected to the pipe body 11, and the pipe cap 12 includes an air supply pipe 21, a water pump pipe 31, and an air bleed pipe 41. The tube cover 12 is provided with a hole through which the tube cover 12 is connected, the connection point between the tube body 11 and the tube cover 12, the connection point between the tube cover 12 and the air supply pipe 21, the connection point between the tube cover 12 and the pumping pipe 31, and the tube cover 12. In order to restrict air from entering the deep well pipe 1 from the connection point between the air supply pipe 21, the water pumping pipe 31, and the air bleed pipe 41, they are each sealed in a sealed manner. An opening is provided at the bottom of the tubular body 11 to allow water in the deep well to easily enter the tubular body 11 through the opening, and a filter hole 111 is bored in the peripheral wall of the tubular body 11. The tube body 11 communicates with the deep well through the filter hole 111 so that water in the deep well enters the tube body 11 through the filter hole 111.

In some embodiments, the tube 11 is provided with a filter 7 located below the liquid level of the tube 11, and there is a distance between the filter 7 and the bottom of the deep well tube 1, so that the The trachea 21 and the water pumping pipe 31 both extend into the filter 7 and are connected to the filter 7, and the filter 7 plays a role in preventing the air pipe 21 and the water pumping pipe 31 from becoming clogged.

All examples of this specific embodiment are preferred examples of this utility model, and do not limit the scope of protection of this utility model, and therefore do not apply to the structure, shape and principle of this utility model. Any equivalent changes made based on this invention are included in the scope of the claims of this utility model.

Claims (10)

A deep well pipe (1) placed in a deep well,
an air supply system (2) comprising an air supply pipe (21) with one end extending into the deep well tube (1) and located below the liquid level of the deep well tube (1);
a pumping system (3) comprising a pumping pipe (31) with one end extending into the deep well pipe (1) and located below the liquid level of the deep well pipe (1);
a bleed air system (4) comprising an bleed air pipe (41) with one end extending into the deep well tube (1) and located above the liquid level of the deep well tube (1). A positive/negative pressure linkage device used to lower the water level in a well. The bleed system (4) is provided outside the deep well pipe (1), is connected to the bleed pipe (41), and extracts the gas in the deep well pipe (1) via the bleed pipe (41). The positive and negative pressure cooperation device used for lowering the water level of a deep well according to claim 1, further comprising an extraction pump (42) for extracting air. The pumping system (3) is provided outside the deep well pipe (1), is connected to the pumping pipe (31), and pumps water in the deep well pipe (1) through the pumping pipe (31). The positive and negative pressure cooperation device used for lowering the water level of a deep well according to claim 1, further comprising a water pump (32) for extracting water. The air supply system (2) is provided outside the deep well pipe (1), is connected to the air pipe (21), and supplies gas into the deep well pipe (1) via the air pipe (21). The positive and negative pressure cooperation device used for lowering the water level of a deep well according to claim 1, further comprising an air supply device (22) for sending air into the deep well. connected to the control ends of the air supply system (2), the water pumping system (3) and the air bleed system (4), respectively; 2. The positive and negative pressure cooperation device used for lowering the water level of a deep well according to claim 1, further comprising a control unit for individually controlling the positive and negative pressures. The pumping system (3) further includes a first vacuum gauge (5), the pumping system (3) includes a pumping pump (32), and the first vacuum gauge (5) is connected to the pumping pump (32) and the control unit. 6. The positive and negative pressure cooperation device used for lowering the water level of a deep well according to claim 5. 6. According to claim 5, further comprising a second vacuum gauge (6), said second vacuum gauge (6) being connected to said deep well tube (1) and said control unit. A positive/negative pressure linkage device used to lower the water level in deep wells. The deep well tube (1) includes a tube body (11) and a tube cover (12) that is hermetically connected to the tube body (11), and the tube cover (12) includes the air supply tube (21). ), holes are provided for passing the water pipe (31) and the air bleed pipe (41), and the pipe cover (12) is provided with holes for passing the air pipe (21), the water pump pipe (31), and the air bleed pipe, respectively. (41), The positive and negative pressure linkage device used for lowering the water level of a deep well according to claim 1, characterized in that the device is connected in a sealed manner to (41). A filtering hole (111) is formed in the peripheral wall of the tubular body (11), and the tubular body (11) communicates with a deep well via the filtering hole (111). The positive and negative pressure cooperation device used for lowering the water level of a deep well according to claim 1. The pipe body (11) is provided with a filter (7) located below the liquid level of the pipe body (11), and both the air supply pipe (21) and the water pumping pipe (31) are connected to the pipe body (11). The positive and negative pressure cooperation device for use in lowering the water level of a deep well according to claim 1, characterized in that the device extends into a filter (7) and is connected to the filter (7).

Images