Portable dredging device for small-caliber shallow underground water monitoring well

Abstract

The utility model belongs to the field of underground water well desilting equipment, and discloses a portable desilting device for a small-caliber shallow underground water monitoring well, which comprises an air compressor and a tripod, the air compressor is detachably connected with a high-pressure air pipe, the high-pressure air pipe is a high-pressure rubber pipe, the high-pressure air pipe is detachably connected with a flushing head or a gas-liquid mixer, and the tripod is connected with the flushing head or the gas-liquid mixer. The inner diameter of the flushing head is 1 / 2 of the inner diameter of the high-pressure gas pipe, the gas-liquid mixer is detachably connected with a bottom suction pipe and a gas-liquid return pipe, the gas-liquid return pipe is detachably connected with a solid-liquid separation device, the solid-liquid separation device is detachably connected with a recharge pipeline, the recharge channel, the bottom suction pipe and the gas-liquid return pipe are all flexible channels, and the tripod is fixedly connected with pulleys. The pulley is movably connected with the high-pressure air pipe; the underground water well dredging device solves the problems that cracks cannot be dredged in an existing dredging mode, and silt which rises along a well hole and is discharged to the ground can pollute the surrounding environment, and is suitable for underground water well dredging.

Description

Technical Field

[0001] The utility model relates to the technical field of groundwater desilting equipment, in particular to a portable desilting device for a small-caliber shallow groundwater monitoring well. Background Art

[0002] Groundwater monitoring is the basis for groundwater management. Due to the continuous migration of groundwater, sediment and pollutants enter the monitoring wells together. The sediment not only causes great interference to groundwater monitoring, but also occupies the space of the monitoring wells, causing the monitoring wells to lose their function. The construction of a new monitoring well faces problems such as high economic cost and long time consumption.

[0003] The existing method of desilting monitoring wells is to lower the drill pipe through the drilling rig to inject well washing fluid or clean water into the bottom of the monitoring well, so that the mud in the monitoring well rises along the wellbore and is discharged to the ground. This desilting method places high requirements on the equipment volume and power, and cannot dredge cracks. At the same time, the mud will flow into the gaps during the rising process. The mud directly discharged to the ground will also pollute the surrounding environment. When the injection of clean water is stopped, the discharged sewage also has the risk of flowing back into the monitoring well. Utility Model Content

[0004] The utility model aims to provide a portable silt removal device for a small-caliber shallow groundwater monitoring well, so as to solve the problem that the existing silt removal method cannot dredge the cracks, and the silt discharged to the ground along the wellbore will also pollute the surrounding environment.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The basic technical solution provided by the utility model is: a portable silt removal device for a small-caliber shallow groundwater monitoring well, comprising an air compressor, the air compressor is detachably connected to a high-pressure air pipe, and the high-pressure air pipe is detachably connected to a positive circulation module and a reverse circulation module;

[0007] The positive circulation module includes a flushing head, which is detachably connected to the high-pressure air pipe;

[0008] The reverse circulation module comprises a gas-liquid mixer, which is detachably connected to a bottom suction pipe, a gas-liquid return pipe and the high-pressure gas pipe, the gas-liquid return pipe is detachably connected to a solid-liquid separation device, and the solid-liquid separation device is detachably connected to a recharging pipeline.

[0009] The principle of the basic technical solution: when the positive circulation module is working, the outside air is compressed by the air compressor, and the compressed air passes through the high-pressure air pipe and the flushing head to form a high-speed airflow and spray out. The high-speed airflow impacts the bottom sediment and stirs it, or flushes the blocked pores through the high-speed airflow to improve the permeability of the bottom of the well; when the reverse circulation module is working, the compressed gas enters the gas-liquid mixer through the high-pressure air pipe and forms bubbles. When the bubbles are discharged from the bottom suction pipe or the gas-liquid return pipe, the air pressure in the gas-liquid mixer will be lower than the outside air pressure, thereby draining the sewage in the well into the gas-liquid mixer. When the bubbles are mixed with the sewage in the well, a vortex will be formed, thereby further draining the sewage in the well. After the sewage in the well enters the gas-liquid return pipe, the outlet end of the gas-liquid return pipe continuously discharges gas to the outside, which will generate negative pressure in the gas-liquid return pipe. At the same time, the continuously rising gas pushes the sewage in the well, and finally the sewage in the well flows out through the gas-liquid discharge pipe under the push of negative pressure and gas.

[0010] The beneficial effects of the basic technical solution are: through the positive circulation module, the well wall and pores are flushed to improve the permeability of the well bottom, and at the same time, the mud and sewage in the well are mixed to facilitate the cleaning of the mud; through the reverse circulation module, the mixture containing mud and sewage is discharged through the gas-liquid return pipe, and the solid-liquid separation device separates the mixture of mud and sewage into mud and clean water. The clean water is used to irrigate the surrounding plants or recharge into the monitoring well through the recharge pipe, which effectively avoids the pollution of the surrounding environment by sewage and prevents the sewage from flowing back into the monitoring well.

[0011] Preferably, it also includes a tripod, the tripod is fixedly connected to a pulley, and the pulley is movably connected to the high-pressure air pipe.

[0012] Through the above arrangement, the lifting and lowering of the high-pressure air pipe is assisted by the pulley, and the lifting and lowering of the high-pressure air pipe is made more convenient by changing the direction of the force.

[0013] Preferably, the gas-liquid mixer is provided with an air pipe connection port, a suction pipe connection port and a return pipe connection port, the inner diameter of the air pipe connection port is smaller than the inner diameter of the return pipe connection port, the inner diameter of the return pipe connection port is smaller than the inner diameter of the suction pipe connection port, and the air pipe connection port, the suction pipe connection port and the return pipe connection port are detachably connected to the high-pressure air pipe, the bottom suction pipe and the gas-liquid return pipe respectively.

[0014] Through the above arrangement, it is easier to form negative pressure in the gas-liquid mixer, thereby draining the sewage in the well.

[0015] Preferably, the high-pressure air pipe is a high-pressure rubber pipe.

[0016] Through the above arrangement, the force of the compressed gas can be effectively resisted to prevent the pipeline from rupturing.

[0017] Preferably, the bottom suction pipe, the gas-liquid return pipe and the recharging pipe are all flexible pipes.

[0018] Through the above arrangement, it is convenient to deploy the dredging device according to the topography of the monitoring well.

[0019] Preferably, the inner diameter of the flushing head is 1 / 2 of the inner diameter of the high-pressure air pipe.

[0020] Through the above arrangement, the impact force of the ejected gas is increased by reducing the inner diameter, thereby achieving a better silt removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a working schematic diagram of a positive circulation module of a portable silt removal device for a small-caliber shallow groundwater monitoring well of the utility model;

[0022] Figure 2 This is a working schematic diagram of a reverse circulation module of a portable silt removal device for a small-caliber shallow groundwater monitoring well of the utility model;

[0023] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0024] The names of the corresponding marks in the accompanying drawings are: air compressor 1, high-pressure air pipe 2, flushing head 3, gas-liquid mixer 4, bottom suction pipe 5, gas-liquid return pipe 6, solid-liquid separation device 7, re-injection channel 8, tripod 9, pulley 10, air pipe connecting port 41, suction pipe connecting port 42, return pipe connecting port 43. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0026] like Figure 1-Figure 3 As shown: a portable desilting device for a small-caliber shallow groundwater monitoring well, comprising an air compressor 1 and a tripod 9, the air compressor 1 is detachably connected to a high-pressure air pipe 2, the high-pressure air pipe 2 is a high-pressure rubber pipe, the high-pressure air pipe 2 is detachably connected to a flushing head 3 or a gas-liquid mixer 4, the inner diameter of the flushing head 3 is 1 / 2 of the inner diameter of the high-pressure air pipe 2, the gas-liquid mixer 4 is provided with an air pipe connection port 41, a suction pipe connection port 42 and a return pipe connection port 43, the inner diameter of the air pipe connection port 41 is smaller than the inner diameter of the return pipe connection port 43, and the return pipe connection port 43 is provided with a suction pipe connection port 42, and the return pipe connection port 43 is provided with a suction pipe connection port 43. The inner diameter of the connecting port 43 is smaller than the inner diameter of the suction pipe connecting port 42. The air pipe connecting port 41, the suction pipe connecting port 42 and the return pipe connecting port 43 are detachably connected to the high-pressure air pipe 2, the bottom suction pipe 5 and the gas-liquid return pipe 6 respectively. The gas-liquid return pipe 6 is detachably connected to the solid-liquid separation device 7. The solid-liquid separation device 7 is detachably connected to the re-injection pipeline 8. The re-injection channel 8, the bottom suction pipe 5 and the gas-liquid return pipe 6 are all flexible channels. The tripod 9 is fixedly connected to the pulley 10, and the pulley 10 is movably connected to the high-pressure air pipe 2.

[0027] The specific implementation process is as follows: first, use the positive circulation module to wash the monitoring well, connect the two sides of the high-pressure air pipe 2 to the air compressor 1 and the flushing head 3 respectively, then place the flushing head 3 in the monitoring well with the assistance of the tripod 9 and the pulley 10, then start the air compressor 1 to make the flushing head 3 spray high-pressure gas, the high-pressure gas flushes the well wall and pores, improves the permeability of the well bottom, and mixes the mud and sewage in the well, then takes out the flushing head 3 and separates it from the high-pressure air pipe 2; then use the reverse circulation module to clean the mud and sand in the well, connect the gas-liquid mixer 4 to the high-pressure air pipe 2, the bottom suction pipe 5 and the gas pump 10 respectively, and then the gas-liquid mixer 4 is connected to the high-pressure air pipe 2, the bottom suction pipe 5 and the gas pump 10. The liquid return pipe 6 is connected, and the gas-liquid return pipe 6 is connected to the re-injection channel 8 through the solid-liquid separation device 7. Then the bottom suction pipe 5 and the gas-liquid mixer 4 are placed in the monitoring well, and the gas is transported to the gas-liquid mixer 4 through the high-pressure gas pipe 2 to form a negative pressure state in the gas-liquid mixer 4, so that the bottom suction pipe 5 is used to extract the mixture of silt and sewage in the monitoring well, and the solid-liquid separation device 7 purifies the mixture of silt and sewage. The purified water is used to irrigate the surrounding plants or re-injected into the monitoring well through the re-injection channel 8, which effectively prevents the sewage in the well from polluting the surrounding environment.

[0028] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A portable dredging device for small-caliber shallow groundwater monitoring wells, characterized in that: It comprises an air compressor (1), the air compressor (1) being detachably connected to a high-pressure air pipe (2), the high-pressure air pipe (2) being detachably connected to a forward circulation module and a reverse circulation module; The positive circulation module comprises a flushing head (3), and the flushing head (3) is detachably connected to the high-pressure air pipe (2); The reverse circulation module comprises a gas-liquid mixer (4), the gas-liquid mixer (4) being detachably connected to a bottom suction pipe (5), a gas-liquid return pipe (6) and the high-pressure gas pipe (2), the gas-liquid return pipe (6) being detachably connected to a solid-liquid separation device (7), and the solid-liquid separation device (7) being detachably connected to a recharging pipeline (8).

2. The portable dredging device for a small-caliber shallow groundwater monitoring well according to claim 1 is characterized in that: It also includes a tripod (9), the tripod (9) is fixedly connected to a pulley (10), and the pulley (10) is movably connected to the high-pressure air pipe (2).

3. The portable dredging device for a small-caliber shallow groundwater monitoring well according to claim 1 is characterized in that: The gas-liquid mixer (4) is provided with an air pipe connection port (41), a suction pipe connection port (42) and a return pipe connection port (43); the inner diameter of the air pipe connection port (41) is smaller than the inner diameter of the return pipe connection port (43); the inner diameter of the return pipe connection port (43) is smaller than the inner diameter of the suction pipe connection port (42); the air pipe connection port (41), the suction pipe connection port (42) and the return pipe connection port (43) are respectively detachably connected to the high-pressure air pipe (2), the bottom suction pipe (5) and the gas-liquid return pipe (6).

4. The portable dredging device for a small-caliber shallow groundwater monitoring well according to claim 1 is characterized in that: The high-pressure air pipe (2) is a high-pressure rubber pipe.

5. The portable dredging device for a small-caliber shallow groundwater monitoring well according to claim 1 is characterized in that: The bottom suction pipe (5), the gas-liquid return pipe (6) and the recharging pipe (8) are all flexible pipes.

6. The portable dredging device for a small-caliber shallow groundwater monitoring well according to claim 1 is characterized by: The inner diameter of the flushing head (3) is 1 / 2 of the inner diameter of the high-pressure air pipe (2).

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