KR20200144932A - Air injection type packer unit for Improved delivery efficiency of cleaning agent - Google Patents

Abstract

The present invention relates to an air injection-type soil cleaning packer unit for increasing the delivery efficiency of a cleaning agent to clean soil in a wide range. According to the present invention, the air injection type soil cleaning packer unit comprises: a cylindrical main body arranged to be elevated inside a well dug under the ground to be lengthily formed along one axial line, having a storage space for temporarily storing a cleaning liquid moved by compressed air generated by an air injector, and having a plurality of slits to inject the cleaning liquid into contaminated soil through the well; an upper cap having a gear structure rotatably disposed in the upper open portion of the main body, elevated with the main body, and having teeth formed along the outer peripheral surface thereof; a lower cap coupled to the lower open portion of the main body to define the storage space and elevated with the main body inside the well; and a screen, to adjust the injection direction of the cleaning liquid injected into the soil, including a support ring provided on the bottom of the upper cap to be axially-rotationally inserted into the main body and a blocking plate extending downwardly along the insertion direction with a predetermined interval from the support ring and blocking a part of slits while in contact with the inner circumferential surface of the main body.

Description

Air injection type packer unit for Improved delivery efficiency of cleaning agent}

The present invention relates to an air injection type soil cleaning packer unit for improving cleaning agent delivery efficiency, and more particularly, to effectively deliver the cleaning agent to contaminated soil through the air injection method and to clean a wide range of soil, It relates to an air-injected soil cleaning packer unit for improving the delivery efficiency of a cleaning agent with an improved structure.

Several heavy metals, including arsenic, lead, cadmium, chromium, vanadium, selenium, and the like, are used in various industrial fields and are discharged in the form of wastewater and waste after use. DNAPLs such as NAPL (substances separated in water (groundwater) where an aquifer is present during underground purification (insoluble)) and DNAPL such as PCE, such as heavy metal-containing waste and oil, can cause serious environmental pollution, so in a safe and complete manner. Of course it must be processed.

Among the various heavy metals described above, arsenic (As) is a toxic substance and can be dissolved in ores or underground geological layers into groundwater, and in Korea, it is intensively discharged from neglected abandoned mine areas. The problem is that the spilled arsenic flows through the unsaturated soil in the area and through the groundwater, increasing the extent of contamination.

Methods such as solidification, soil cleaning, reaction wall installation, adsorption, and precipitation have been proposed as technologies for the restoration of contaminated soil or groundwater and removal of NAPL and DNAPL substances. Solidification is mainly applied to the soil and is a technique that completely insolubilizes the soil using chemical substances. Soil cleaning is a technology that removes contaminants by repeating injection and extraction by injecting a cleaning solution such as acid or base into contaminated soil and aquifer.

In situ soil flushing for soil cleaning, as shown in FIG. 1, water containing water or an additive (surfactant, etc.) to increase the solubility of pollutants is injected into the pores of the soil through a well. It belongs to the physical/chemical treatment technology among the in-situ technologies in which pollutants adsorbed on the soil are desorbed and extracted to the ground for treatment. The cleaning solution injected through the injection well (pipe well) purifies the soil in the contaminated area by increasing the solubility of the contaminants adsorbed on the soil particles while passing through the underground contaminated area, desorbing contaminants from the soil particles and pumping them into the extraction well.

On the other hand, in the process of injecting the cleaning solution into the contaminated soil, pressure resistance of the soil is generated. In order to prevent the injection of the cleaning solution from being disturbed by this pressure resistance, a hydraulic packer as shown in Fig. 2 (a) or (b) Mechanical packers have been used.

However, although such a packer can inject the cleaning solution into the soil, it is difficult to inject the cleaning solution into the soil at high pressure and high speed, thus reducing the cleaning efficiency of the soil and cleaning only a specific part of the soil. It has a difficult drawback.

As a prior art, there is Korean Patent Registration No. 10-1361398 "Soil cleaning system and method for the restoration of contaminated soil and groundwater".

The present invention was conceived to solve the above problems, and an object of the present invention is to increase the cleaning efficiency of the soil by injecting a cleaning solution for soil cleaning into the soil at high pressure and high speed, and to clean a wide range of soil. It is intended to provide a packer unit for cleaning soil with an air injection method for improving the cleaning agent delivery efficiency that enables it.

The problem of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to the present invention for achieving the above object is disposed to be elevated in the inside of a well buried under the ground and formed long along an axis in one direction, A tubular main body having a receiving space for temporarily receiving the cleaning liquid moved by the generated compressed air, and having a plurality of slits so that the cleaning liquid can be injected into the contaminated soil via a well; An upper cap having a gear structure that is rotatably disposed in an upper open portion of the main body, is raised and lowered together with the main body, and has teeth along an outer peripheral surface; A lower cap coupled to the lower open portion of the main body to define the accommodation space and to be raised and lowered from the well with the main body; And a support ring provided on the bottom of the upper cap and axially inserted into the main body so as to adjust the direction of injection of the cleaning solution injected into the soil, and a predetermined distance from the support ring, And a screen having a blocking plate extending downwardly and blocking part of the slits while being in contact with the inner circumferential surface of the main body.

The upper cap rotates by being dynamically connected to a motor installed on a fixing ring formed along an upper outer circumferential surface of the main body and rotates the screen.

In the present invention, it is preferable that one side is connected to the washing liquid injection tank, the other side penetrates the upper cap and is disposed in the receiving space, so that the washing liquid is moved to the receiving space, and a connection line made of a flexible material; it is preferable to further include .

The air injector may be connected to the connection line to inject compressed air into the connection line when the cleaning liquid is moved.

The present invention is made in the form of a transfer screw so that the main body fastened with the upper cap and the lower cap can be raised and lowered, one side is connected to the lifting motor, and the other side passes through the upper cap to power the lower cap having a nut part. It is preferable to further include a transfer member that is engaged with each other.

The present invention is provided between the transfer member and the upper cap so as to prevent the upper cap from rotating along the transfer member when the transfer member rotates, and is in contact with the transfer member to rotate in place when the transfer member rotates. It may further include a free rotation member.

The air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to the present invention having the configuration as described above, The cleaning liquid that moves together with the compressed air generated by the air compressor is temporarily accommodated in the receiving space of the main body and introduced into the soil through the well through the slits of the main body, and the upper cap is made of a gear structure and rotates. It is placed in the upper open part of the main body, the lower cap is coupled to the lower open part of the main body, and the support ring of the screen is inserted so as to be axially rotatable inside the main body, and the blocking plate has a certain distance from the support ring. It extends downward to block some of the slits, and the upper cap is connected to the motor installed on the fixing ring of the main body and rotates and rotates the screen, thereby injecting the cleaning solution for soil cleaning into the soil at high pressure and high speed to improve soil cleaning efficiency. It has the effect of making it possible to wash a wide range of soil by adjusting the injection direction of the cleaning solution and removing heavy metals, NAPL and DNAPL substances.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 and 2 are views for explaining a packer unit according to the prior art.
3 is a view for explaining a soil cleaning system employing an air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to an embodiment of the present invention.
Figure 4 is an exploded perspective view for explaining the air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to an embodiment of the present invention.
5 is a view for explaining the adjustment of the washing liquid injection direction by the screen employed in an embodiment of the present invention.
Figure 6 is a view for explaining the transfer member employed in an embodiment of the present invention.
7 is a view for explaining the free rotation member and the guide member employed in an embodiment of the present invention and for explaining the elevation of the main body according to the rotation of the transfer member.

Hereinafter, with reference to the accompanying drawings, an air injection type soil cleaning packer unit for improving cleaning agent delivery efficiency according to an embodiment of the present invention will be described in detail.

3 is a view for explaining a soil cleaning system employing an air injection type soil cleaning packer unit for improving cleaning agent delivery efficiency according to an embodiment of the present invention, and FIG. 4 is a cleaning agent according to an embodiment of the present invention It is an exploded perspective view for explaining the air injection type soil cleaning packer unit for improving the delivery efficiency, and FIG. 5 is a view for explaining the adjustment of the washing liquid injection direction by the screen employed in an embodiment of the present invention, and FIG. It is a view for explaining the transfer member employed in one embodiment of the invention, Figure 7 is for explaining the free rotation member and the guide member employed in the embodiment of the present invention, and for explaining the lifting of the main body according to the rotation of the transfer member It is a drawing.

As well shown in these drawings, the air-injected soil cleaning packer unit for improving the cleaning agent delivery efficiency according to an embodiment of the present invention includes a main body 100, an upper cap 200, a lower cap 300, It comprises a screen 400.

The main body 100 is disposed to be elevated in the inside of the well A buried under the ground and formed long along an axis in one direction, and a cleaning liquid that is moved at high speed by the compressed air generated by the air injector 10 is It forms an accommodation space that is temporarily accommodated.

The main body 100 is formed in a tubular shape and includes a plurality of slits 110 communicating the receiving space and the outside, so that the compressed air and cleaning liquid temporarily accommodated in the receiving space are contaminated via the well (A). Let it be injected into the soil.

The slits 110 of the main body 100 are formed in plural on the side of the main body 100 along the depth direction of the soil in which the wells are buried, so that a wide range (range in the depth direction) of the contaminated soil Allows injection of cleaning liquid. At this time, a plurality of outlets (B) are provided in the well (A) along the depth direction of the soil so that the cleaning solution is injected into the soil through the well.

The upper cap 200 is rotatably disposed in the upper open portion of the main body 100, is raised up and down with the main body 100, and has a gear structure in which teeth are formed along the outer circumferential surface.

In addition, the upper cap 200 is coupled to the screen 400 on the bottom surface, and the screen 400 is inserted into the upper open portion of the main body 100 to be connected to the main body. Further, the upper cap 200 is dynamically connected to and rotated with a motor M coupled to the fixing ring 120 formed along the upper outer circumferential surface of the main body 100, thereby rotating the screen 400.

The lower cap 300 is coupled to the lower open portion to limit the accommodation space and is raised and lowered inside the well along with the main body. The lower cap 300 may be coupled to the lower open portion by various coupling methods (fitting coupling method or screw coupling method, etc.), and it is preferable that the lower cap 300 is implemented with a material having corrosion resistance.

As described above, the screen 400 is installed on the bottom of the upper cap 200 and inserted into the upper open portion of the main body 100, so that the upper cap 200 is inserted into the upper open portion of the main body 100. ) Is placed.

The screen 400 includes a support ring 410 and a blocking plate 420. The support ring 410 of the screen 400 is provided on the bottom surface of the upper cap 200 and is inserted in the upper open portion of the main body 100 so as to be axially rotatable. The support ring 410 is formed in a ring shape extending downward from the bottom surface of the upper cap 200.

The blocking plate 420 of the screen 400 has a predetermined distance from the support ring 410 and extends downward along the insertion direction (insertion direction of the support ring), and is in contact with the inner circumferential surface of the main body 100. Block some of them 110.

The blocking plate 420 of the screen 400 is rotated together with the support ring 410 when the upper cap 200 is rotated according to the driving of the motor M, so that some of the slits 110 are selectively By blocking with, it is possible to adjust the injection direction of the cleaning solution injected into the contaminated soil, resulting in an effect of increasing the cleaning efficiency of the soil (see FIG. 5).

The blocking plate 420 is formed in a shape corresponding to the inner circumferential surface of the main body 100 and rotates in a state in contact with the inner circumferential surface (a state adjacent to the inner circumferential surface to an extent that can be rotated), so that the cleaning liquid is transferred to the slits 100 of the unblocked portion It is moved, and the cleaning liquid is injected in the direction in which cleaning is required.

That is, when the blocking plates 420 of the screen 400 are disposed on both sides of the main body 100, the cleaning liquid is moved in the front and rear directions of the main body 100 (see FIG. 5(a)). On the other hand, when the blocking plate 420 is disposed in the front and rear directions of the main body 100, the cleaning liquid can be moved to both sides of the main body 100 (see Fig. 5(b)).

In the air-injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to an embodiment of the present invention having the configuration as described above, the cleaning liquid moved by the compressed air generated in the air compressor 10 is the main body ( 100) is temporarily accommodated in the receiving space of the main body and flows into the soil through the well through the slits 110 of the main body, and is made of a gear structure of the upper cap and is placed in the upper open part of the main body to rotate And, the lower cap 300 is coupled to the lower open portion of the main body, the support ring 410 of the screen 400 is inserted to be axially rotatable inside the main body 100, and the blocking plate 420 is It extends downward at a certain distance from the support ring to block part of the slits 110, and the upper cap 200 is connected to the motor installed on the fixing ring 120 of the main body and rotates the screen 400. , By injecting the cleaning solution for soil cleaning into the soil at high pressure and high speed, it increases the cleaning efficiency of the soil, and enables the cleaning of a wide range of soil by adjusting the injection direction of the cleaning solution, and enables the removal of heavy metals, NAPL and DNAPL substances. Has an effect.

The fixing ring 120 is formed extending along the upper outer circumferential surface of the main body 100, has a sealing member S, and is in contact with the inner surface of the well A, while the main body is elevating from the inside of the well By raising and lowering together with the main body 100, the cleaning liquid is temporarily accommodated in the space between the main body and the well.

On the other hand, it is preferable that the air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to an embodiment of the present invention further includes a connection line 500. The connection line 500 is disposed in the receiving space of the main body 100 while one side is connected to a cleaning solution injection tank for receiving and supplying the cleaning solution and the other side passing through the upper cap 200.

The connection line 500 penetrates into an eccentric position in the center of the upper cap 200 and is made of a flexible material, and when the upper cap 200 is rotated at a certain angle or returned to its original position, it is bent or restored to its original state. Can be.

The connection line 500 moves the cleaning liquid delivered from the cleaning liquid injection tank to the receiving space of the main body, and moves the compressed air generated by the air injector 10 together with the cleaning liquid to the receiving space, so that the cleaning liquid is at high pressure and high speed. It can be injected into the soil through the well (A).

Here, the air injector 10 generates compressed air in various ways, and is connected to the connection line 500 to inject compressed air into the connection line 500 when the cleaning liquid moves, so that the cleaning liquid moves at high pressure and high speed. And the cleaning solution can be effectively injected into the contaminated soil and the cleaning solution can be effectively absorbed into the soil. The air injector 10 can generate compressed air by driving a cylinder by wind power, and can also generate compressed air by using a cylinder method using a motor.

Furthermore, the air-injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency according to an embodiment of the present invention includes a transfer member 600 for elevating the main body 100, a free rotation member 700, and a guide member 800. It is preferable to further include).

The transfer member 600 has a length in the depth direction of the soil and is formed in the form of a transfer screw, and one side is connected to the lifting motor C, and the other side passes through the upper cap 200 and the nut of the lower cap 300 By being dynamically connected to the part (N), the main body 100 coupled with the upper cap 200 and the lower cap 300 by converting the rotational motion of the lifting motor C into a linear motion of the main body 100 ) To lift.

The transfer member 600 is disposed on the central axis of the upper cap 200, the main body 100, and the lower cap 300, and when rotating, the main body is raised and lowered from the ground surface to allow a wide range of cleaning solutions from contaminated soil. By allowing it to be injected, it enables a wide range of soil cleaning and leads to an effect of increasing soil cleaning efficiency.

The free rotation member 700 is provided between the transfer member 600 and the upper cap 200 and is in contact with the transfer member 600 and rotates in place when the transfer member 600 rotates, so that the transfer member 600 Induces an effect of preventing the upper cap from rotating along the transfer member during rotation of the transfer member, and preventing abrasion of the upper cap 200 due to rotation of the transfer member 600 (wear due to friction between the transfer member and the upper cap) do.

The free rotation member 700 may have a structure such as a ball bearing, and freely rotates when the transfer member 600 rotates in a state in contact with the outer surface of the transfer member 600 and moves the transfer member 600 to the upper side. It is supported in the center of the cap 200.

It is preferable that the guide member 800 is formed to be elongated along the insertion direction of the well A and sequentially penetrates the fixing ring 120 and the lower cap 300 to be fixed at the lower end of the well A. The guide member 800 guides the elevation of the main body 100 when the transfer member 600 rotates, and allows the cleaning liquid (cleaning agent) to be widely injected into the contaminated land, as well as the transfer member 600 It has an effect of preventing the fixing ring 120, the main body 100, and the lower cap 300 from rotating during rotation.

According to an embodiment of the present invention, the air-injection type soil-cleaning packer unit for improving the delivery efficiency of the detergent according to the present invention includes the transfer member 600 passing through the upper cap 200 to the nut portion N of the lower cap 300. When it is connected dynamically and rotates, the main body 100 is raised and lowered, and the motor M provided on the fixing ring 120 of the main body rotates the upper cap 200 so that the slits 110 by the blocking plate 420 ) Can be opened and closed to control the injection direction of the cleaning liquid, and the connection line 500 is disposed in the receiving space of the main body with the upper cap 200 passing through it, and the cleaning liquid with compressed air is delivered to the receiving space. And the guide member 800 guides the elevation of the main body, thereby increasing the cleaning efficiency of the soil by injecting the cleaning liquid into the soil at high pressure and high speed, and injecting the cleaning liquid into the upper and lower portions in the depth direction of the soil. And, it has the effect of being able to adjust the injection direction of the cleaning solution in the soil where the main body is located.

Although various embodiments of the present invention have been described above, the present embodiment and the accompanying drawings are merely illustrative of some of the technical ideas included in the present invention, and are included in the specification and drawings of the present invention. It will be apparent that all modified examples and specific embodiments that can be easily inferred by a person skilled in the art within the scope of the technical idea are included in the scope of the present invention.

A: Well B: Outlet
C: lifting motor 10: air injector
100: main body 110: slits
120: fixing ring S: sealing member
M: Motor 200: upper cap
300: lower cap N: nut part
400: screen 410: support ring
420: blocking plate 500: connection line
600: transfer member 700: free rotation member
800: guide member

Claims (4)

It is arranged to be elevated inside the well buried under the ground, is formed to be elongated along an axis in one direction, and has a receiving space for temporarily accommodating the cleaning liquid moved by the compressed air generated by the air injector, and the cleaning liquid passes through the well A cylindrical main body having a plurality of slits to be injected into the contaminated soil;
An upper cap having a gear structure that is rotatably disposed in an upper open portion of the main body, is raised and lowered together with the main body, and has teeth along an outer peripheral surface;
A lower cap coupled to the lower open portion of the main body to define the accommodation space and to be raised and lowered from the well with the main body; And
A support ring provided on the bottom of the upper cap and axially inserted into the main body so as to adjust the direction of injection of the cleaning solution injected into the soil, and a predetermined distance from the support ring along the insertion direction. Including; a screen each extending downward and having a blocking plate blocking part of the slits while in contact with the inner circumferential surface of the main body,
The upper cap is connected to the motor installed on the fixing ring formed along the upper outer circumferential surface of the main body to rotate and rotate the screen, characterized in that the air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency . The method of claim 1,
One side is connected to the washing liquid injection tank, the other side is disposed in the receiving space through the upper cap, the washing liquid is moved to the receiving space, and a connection line made of a flexible material; further comprising,
The air injector is connected to the connection line and injects compressed air into the connection line when the cleaning liquid is moved. An air injection type soil cleaning packer unit for improving cleaning agent delivery efficiency. The method of claim 1,
In order to lift the main body fastened with the upper cap and the lower cap, it is formed in the form of a transfer screw, and one side is connected to the lifting motor, and the other side penetrates the upper cap and is dynamically engaged with the lower cap having a nut part. Air-injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency, characterized in that it further comprises a transfer member. The method of claim 3,
A free rotating member that is provided between the transfer member and the upper cap so as to prevent the upper cap from rotating along the transfer member when the transfer member rotates, and which contacts the transfer member to rotate in place when the transfer member rotates Air injection type soil cleaning packer unit for improving the cleaning agent delivery efficiency, characterized in that it further comprises.

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