CN214833011U - Bottom hole sediment cleaning system of small-caliber underground water injection well or monitoring well - Google Patents

Abstract

The utility model provides a shaft bottom silt cleaning system of a small-caliber underground water injection well or a monitoring well, which comprises an air supply system and a mud discharge system; the gas supply system comprises a fuel oil air compressor and a gas supply pipe connected to the fuel oil air compressor through a quick connector; the mud discharging system comprises a mud discharging pipe and a mud shovel fixedly connected to a liquid inlet of the mud discharging pipe, and a mud discharging hose is connected to a liquid outlet of the mud discharging pipe; the air outlet of the air supply pipe is connected with an air pipe elbow fixedly arranged above the liquid inlet of the sludge discharge pipe through a quick connector; the sludge water collecting tank is used for connecting a sludge discharge hose; the method is not only suitable for cleaning sludge at the bottom of the small-caliber injection well, but also can be used for the situation of lack of power supply under the field working conditions such as a monitoring well.

Description

Bottom hole sediment cleaning system of small-caliber underground water injection well or monitoring well

Technical Field

The utility model relates to a groundwater shaft bottom silt clearance technical field, concretely relates to shaft bottom silt cleaning system of small-bore groundwater injection well or monitoring well.

Background

During the long-time use or suspension use process of the underground water in-situ remediation injection well, a large amount of silt is accumulated in the well bottom, the injection effect of the medicament in the aquifer range is influenced, and the underground water in-situ remediation effect is influenced; the underground water monitoring well is characterized in that sediment deposits in the well are cleaned by washing the well before sampling, and the well depth and water quality of the well are guaranteed to be clear, so that an underground water sampling sample is representative.

Generally, the cleaning of sediment at the bottom of an in-situ injection well and a groundwater monitoring well is mainly finished by adopting a Beller tube, a self-sucking pump or a submersible pump, the labor intensity is high when the Beller tube is used for cleaning the sediment at the bottom of the well, the cleaning efficiency is low, the maximum suction distance of the self-sucking pump is limited, the self-sucking pump is not suitable for use when the well is deep, the sediment deposited at the bottom of the well is dense for a long time, and the self-sucking pump is difficult to disturb and suck the sediment deposited at the bottom of the well; the submersible pump can be suitable for cleaning silt at the bottom of a deeper underground water well, but is only suitable for a pumping/recharging well with a large caliber, and is not suitable for cleaning silt at the bottom of an underground water injection/monitoring well with a small caliber.

The patent with publication number CNCN104818984A discloses a well washing and sampling device for a modularized underground water monitoring well, which completes the well washing and sampling of the monitoring well through a micro water pump module and a plurality of pipeline modules by a flow guide module.

In patent publication No. CN110454143A, a monitoring well washing device is disclosed, the system uses a water suction pump and a blower together to solve the problem of washing sediment in the monitoring well, the blower blows up the sediment at the bottom of the monitoring well by wind power, and then the sediment is pumped out by a water suction device, although the device blows up the sediment at the bottom of the monitoring well by a fan; however, when the bottom of the well is deposited with a large amount of silt and is compact, the system is difficult to clean thoroughly only by air disturbance, power needs to be supplied to the system, and generally, a monitoring well is constructed and operated in the field, and the field is inconvenient to connect cables.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a shaft bottom silt cleaning system of small-bore groundwater injection well or monitoring well.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a bottom hole sediment cleaning system of a small-caliber underground water injection well or a monitoring well comprises a gas supply system and a sediment discharge system;

the gas supply system comprises a fuel oil air compressor and a gas supply pipe connected to the fuel oil air compressor through a quick connector;

the mud discharging system comprises a mud discharging pipe and a mud shovel fixedly connected to a liquid inlet of the mud discharging pipe, and a mud discharging hose is connected to a liquid outlet of the mud discharging pipe;

the air outlet of the air supply pipe is connected with an air pipe elbow fixedly arranged above the liquid inlet of the sludge discharge pipe through a quick connector;

the sludge collecting tank is used for connecting a sludge discharge hose.

Preferably, the sludge discharge pipe is mainly formed by connecting a plurality of pipe fittings.

Preferably, the sludge discharge pipe and the gas supply pipe are arranged in parallel at the position extending into the bottom of the well.

Preferably, the mud discharging pipe with be connected with between the mud discharging hose and turn to elbow and connecting pipe, the mud discharging hose with the connecting pipe passes through clamp locking.

Preferably, the air pipe elbow is a U-shaped pipe fitting; the horizontal section of the air pipe elbow is fixedly connected to the sludge discharge pipe.

Preferably, a half-opening structure is arranged on the mud shovel.

Preferably, a pressure reducing valve is installed at an exhaust port of the air compressor.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the mud shovel is arranged on the mud discharging pipe, so that mud can be shoveled firstly under the condition that the amount of mud and sand at the bottom of the well is large, and the mud and water mixture can be stirred by the mud shovel when being discharged, so that the mixing of the mud and the ground water is accelerated, and the mud and water mixture is more convenient to discharge outwards; thereby being suitable for cleaning silt at the bottom of a small-caliber injection well and a monitoring well;

2. the adoption of the fuel oil air compressor can adapt to the condition that no power supply is provided on the construction site of the monitoring well;

3. the mud pipe forms through many pipe connections, can get the shaft bottom operating mode according to different well depths to can dismantle so that carry in handling, but fast assembly when using.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

in the figure, the position of the upper end of the main shaft,

fuel air compressor machine 1, quick-operation joint 2, air supply pipe 3, mud pipe 4, mud shovel 5, row's mud hose 6, trachea elbow 7, muddy water collection tank 8, turn to elbow 9, connecting pipe 10, clamp 11.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a bottom sediment cleaning system for a small-bore groundwater injection well or a monitoring well, including an air supply system and a mud discharging system, wherein the air supply system is used for conveying compressed air to the bottom of the well and can take bottom sediment to be discharged outwards through the mud discharging system; wherein, the gas supply system comprises a fuel air compressor 1 and a gas supply pipe 3 connected to the fuel air compressor 1 through a quick coupling 2, the power of the fuel air compressor 1 is 7.5kW, the rated exhaust pressure is 1.8Mpa, and the rated displacement is 0.9m³Min; when the fuel air compressor 1 works, compressed air is conveyed to the bottom of a well through the air supply pipe 3; due to the adoption of the fuel oil air compressor 1, the air compressor can be used in field working environments such as a monitoring well and the like, and the problem of power supply is avoided.

The sludge discharge system comprises a sludge discharge pipe 4 and a sludge shovel 5 fixedly connected to a liquid inlet of the sludge discharge pipe 4, the sludge shovel 5 is welded outside the liquid inlet of the sludge discharge pipe 4, so that sludge can be conveniently fed from the liquid inlet below the sludge discharge pipe 4, the liquid outlet of the sludge discharge pipe 4 is connected with a sludge discharge hose 6, the sludge discharge hose 6 is made of PVC (polyvinyl chloride), and a gas outlet of the gas supply pipe 3 is connected with a gas pipe elbow 7 fixedly arranged above the liquid inlet of the sludge discharge pipe 4 through a quick connector 2; after compressed air input from the air supply pipe 3 enters the mud pipe 4 through the air pipe elbow 7, the mud-water mixture at the bottom of the well can be driven by air flow to be discharged from the mud pipe 4 outwards under the action of liquid pressure difference, and is collected and processed uniformly through the mud hose 6; when a large amount of silt is deposited at the bottom of the well, the mud shovel 5 can be driven by the mud discharge pipe 4 to shovel off the redundant silt from the bottom of the well; and in the process of removing the mud-water mixture, the mud shovel 5 is used for stirring to cut and crush the mud blocks, so that the mud is mixed with underground water as much as possible, and a part of compressed air flows downwards in the process of entering the mud discharging pipe 4 to impact mud water at the bottom of a well, so that the fluidity of the mud water is improved, and the mud water at the bottom of the well can be removed more cleanly.

The muddy water discharged through the mud discharging hose 6 needs to be collected and treated uniformly, and the muddy water collecting tank 8 is used for being connected with the mud discharging hose 6, is discharged from the bottom of a well and is collected in the muddy water collecting tank 8, and then is convenient for centralized treatment.

In order to adapt to the cleaning of sediment at the bottom of a well with different well depths, the sludge discharge pipe 4 is mainly formed by connecting a plurality of pipe fittings, so that the length can be adjusted, and the sludge discharge pipe can be quickly disassembled in the carrying process and is convenient to carry; the pipe fitting can adopt stainless steel pipes, the length of each stainless steel pipe can be 1.5m under normal conditions, and the connection adopts a threaded connection mode so as to facilitate quick connection; in order to ensure the fluidity of the muddy water and avoid the occurrence of blockage, the diameter of the stainless steel pipe is DN20 mm.

The positions of the sludge discharge pipe 4 and the gas supply pipe 3 extending into the well bottom are arranged in parallel, so that the flow resistance caused by the bending of the pipeline is avoided.

When mud pipe 4 carried mud-water mixture mud-water hose 6, in order to avoid the junction to cause mud-water hose 6 to produce the crooked formation flow resistance, at mud pipe 4 with be connected with between mud-water hose 6 and turn to elbow 9 and connecting pipe 10, and let mud-water hose 6 with connecting pipe 10 passes through clamp 11 locking to form stable mud-water flow process in the corner.

Specifically, after compressed air in the air supply pipe 3 enters the sludge discharge pipe 4, power can be supplied to the outward flowing direction of muddy water as much as possible, the air pipe elbow 7 is a U-shaped pipe fitting and faces upward, and when the air pipe elbow 7 is fixedly installed, the horizontal section of the air pipe elbow 7 is fixedly connected to the pipe wall of the sludge discharge pipe 4.

In order to facilitate the cleaning of the sludge at the bottom of the well, the sludge shovel 5 can be used for forming a better supporting effect on the sludge, and a half-opening structure is arranged on the sludge shovel 5, so that the whole sludge shovel 5 is similar to a Luoyang shovel structure.

Meanwhile, in order to adjust the rated discharge pressure of the fuel air compressor 1, a pressure regulating valve is installed at the discharge port of the fuel air compressor 1.

After the cleaning system disclosed in the embodiment is used, compressed air generated by the fuel air compressor 1 is sent to the bottom of a well through the air supply pipe 3, so that a mud-water mixture is discharged from the mud pipe 4; meanwhile, the sludge and the underground water can be stirred and mixed by the mud shovel 5 at the bottom of the mud discharging pipe 4 to improve the fluidity; when the amount of sludge at the bottom of the well is large, the sludge can be cleaned through the mud shovel 5, the size of the whole system is small, and the system is suitable for cleaning sludge at the bottom of a small-caliber injection well or a monitoring well.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (7)

1. The utility model provides a bottom hole silt cleaning system of small-bore groundwater injection well or monitoring well which characterized in that: comprises an air supply system and a sludge discharge system;

the gas supply system comprises a fuel oil air compressor (1) and a gas supply pipe (3) connected to the fuel oil air compressor (1) through a quick connector (2);

the sludge discharge system comprises a sludge discharge pipe (4) and a sludge shovel (5) fixedly connected to a liquid inlet of the sludge discharge pipe (4), and a liquid outlet of the sludge discharge pipe (4) is connected with a sludge discharge hose (6);

the air outlet of the air supply pipe (3) is connected with an air pipe elbow (7) which is fixedly arranged above the liquid inlet of the sludge discharge pipe (4) through a quick joint (2);

also comprises a muddy water collecting tank (8) which is used for connecting the mud discharging hose (6).

2. The system of claim 1 for cleaning bottom hole sand from a small bore groundwater injection or monitoring well, wherein: the sludge discharge pipe (4) is mainly formed by connecting a plurality of pipe fittings.

3. A system for cleaning bottom hole sand in small bore ground water injection or monitoring wells as claimed in claim 1 or claim 2 wherein: the sludge discharge pipe (4) and the gas supply pipe (3) are arranged in parallel at the position extending into the well bottom.

4. The system of claim 3, wherein the system further comprises: mud pipe (4) with be connected with between mud discharge hose (6) and turn to elbow (9) and connecting pipe (10), mud discharge hose (6) with connecting pipe (10) are through clamp (11) locking.

5. The system of claim 3, wherein the system further comprises: the air pipe elbow (7) is a U-shaped pipe fitting; the horizontal section of the air pipe elbow (7) is fixedly connected to the sludge discharge pipe (4).

6. The system of claim 3, wherein the system further comprises: and a half-opening structure is arranged on the mud shovel (5).

7. The system of claim 1 for cleaning bottom hole sand from a small bore groundwater injection or monitoring well, wherein: and a pressure reducing valve is arranged at an air outlet of the air compressor.

Images