CN215236752U

CN215236752U - Device for in-situ soil remediation

Info

Publication number: CN215236752U
Application number: CN202121296027.1U
Authority: CN
Inventors: 张勋; 赖文学; 冯松林; 谢晓聪; 青兆松; 余苗苗; 黄智奎
Original assignee: Guangxi Dingshi Environmental Remediation Co ltd
Current assignee: Guangxi Dingshi Environmental Remediation Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-21
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a device for soil is restoreed to normal position, include: a drill rod body; the injection mechanism is used for introducing high-pressure liquid into the water pipe; the injection mechanism comprises a plurality of injection pipes and nozzles, the injection pipes are sequentially arranged in a cavity of the drill rod body from top to bottom, the injection pipes and the drill rod body are coaxially arranged, a plurality of nozzles are arranged on one circumference of each injection pipe, the distance from the water outlet ends of the nozzles to the axis of the drill rod is smaller than or equal to the distance from the outer surface of the drill rod body to the axis of the drill rod, a movable plugging piece is arranged in the cavity of each injection pipe and corresponds to the nozzles, the plugging pieces are connected through connecting rods, and the lower end of the plugging piece in the injection pipe at the tail end of the drill rod body is provided with a spring; and a drill bit. The utility model discloses a device can restore the soil of different degree of depth soil layer, improves the prosthetic treatment effeciency of soil.

Description

Device for in-situ soil remediation

Technical Field

The utility model relates to a soil remediation technical field, in particular to a device for soil is restoreed to normal position.

Background

Soil is the foundation of human activities and survival, the deterioration of soil environment directly threatens the safety of human beings in the aspects of grains, living, activities and the like, and is different from common atmospheric pollution, water pollution and industrial solid waste, and the soil pollution has invisibility and concealment. On one hand, soil pollution degrades soil fertility, leads to crop yield reduction and quality reduction, on the other hand, toxic substances can cause harm to human health after entering a food chain through accumulation and absorption, and more seriously, after the toxic substances in the soil are accumulated to a certain degree, the toxic substances can directly cause harm to human health through volatilization or use.

At present, the technical means for soil remediation are divided into in-situ remediation and ex-situ remediation. The dystopy is restoreed then need to restore soil dystopy after preliminary treatment through repair equipment again, restores the soil return that the back will purify again and handles, and its process flow is longer, and each system independently moves, and operation and maintenance cost are high. The in-situ repair mainly comprises the following steps: biological repair and chemical repair. The chemical remediation is to inject remediation solution into soil through equipment to react with harmful substances in the soil, so that the remediation effect is achieved. The high-pressure rotary spraying is the combined action of high-pressure repairing solution and high-pressure water vapor, and cuts and stirs the soil body, thereby achieving the repairing effect, however, when the high-pressure rotary spraying repairing technology is used, the high-pressure rotary spraying repairing technology cannot simultaneously spray soil layers with different depths.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of soil is restoreed to normal position to when overcoming the normal position and restoreing soil, can not spray the shortcoming that the treatment effeciency is low to the different degree of depth soil layers simultaneously.

In order to achieve the above object, the utility model provides a device for soil is restoreed to normal position, include: the drill rod body is of a hollow structure; the injection mechanism comprises a high-pressure pump and a water pipe, the water pipe is communicated with the cavity of the drill rod body, and the high-pressure pump is communicated with the liquid storage tank and is used for introducing high-pressure liquid into the water pipe; the injection mechanism comprises a plurality of injection pipes and nozzles, the injection pipes are of a hollow structure, the injection pipes are sequentially arranged in a cavity of the drill rod body from top to bottom, the injection pipes and the drill rod body are coaxially arranged, a plurality of nozzles are arranged on one circumference of each injection pipe, the distance from the water outlet ends of the nozzles to the axis of the drill rod is smaller than or equal to the distance from the outer surface of the drill rod body to the axis of the drill rod, a movable plugging piece is arranged in the cavity of each injection pipe, the plugging pieces are arranged corresponding to the nozzles, the plugging pieces are connected through a connecting rod, and a spring is arranged at the lower end of each plugging piece in the injection pipe at the tail end of the drill rod body; the drill bit is fixedly arranged on the injection pipe at the tail end of the drill rod body, the upper end of the spring is connected with the plugging piece in the injection pipe at the tail end of the drill rod body, and the lower end of the spring is connected with the drill bit; the high-pressure liquid acts on the spring, and the spring reciprocates to drive the plugging piece to move up and down and control the opening and closing of the nozzle.

Preferably, in the above technical scheme, the injection pipe is provided with a cylinder section, a conical contraction section, a cylinder throat section, and a conical diffusion section in sequence from the liquid inlet to the liquid outlet, the conical diffusion section is provided with a plurality of water outlet holes, the nozzles are provided at each water outlet hole in a one-to-one correspondence, and the spray holes of the nozzles coincide with the axes of the water outlet holes.

Preferably, in the above technical scheme, the water outlet hole is disposed close to the liquid outlet of the cylindrical throat section.

Preferably, in the above technical scheme, the plugging piece is placed in the conical diffusion section, the plugging piece is in a circular truncated cone shape, and the top of the plugging piece is in a semicircular structure; when the spring is in an extending state, the top of the plugging piece extends towards the inside of the cylindrical throat section, the outer surface of the plugging piece is attached to the inner surface of the conical diffusion section, and the water outlet hole is plugged.

Preferably, in the above technical solution, a protection cover is disposed on the top of the blocking piece.

Preferably, among the above-mentioned technical scheme, the last stand section and the second stand section of being equipped with in proper order by inlet to liquid outlet of the injection pipe of the drilling rod body of rod, be equipped with a plurality of apopores on the second stand section, every the apopore one-to-one is equipped with the nozzle, be equipped with in the second stand section and be columniform terminal shutoff piece, terminal shutoff piece periphery is equipped with the sealing ring, the sealing ring is located the below of apopore.

Preferably, in the above technical solution, the top end of the end plugging member is a semicircular structure.

Preferably, in the above technical scheme, the water outlet end of the water pipe is provided with a high-pressure joint.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a device for soil is restoreed to normal position, for the drilling rod structure, be equipped with injection mechanism on the body of rod, be equipped with a plurality of injection pipes in injection mechanism's the vertical direction, can pour into the soil layer of the different degree of depth simultaneously and restore solution, restore the soil of the different degree of depth soil layer. The treatment efficiency of soil remediation is improved. The soil remediation agent can fully contact pollutants in soil through reaction with the pollutants in the soil under the action of osmosis, and has a good remediation effect.

Drawings

Fig. 1 is a schematic structural view of a device for in situ remediation of soil according to the present invention;

FIG. 2 is a schematic structural view of a nozzle arranged in the device for in-situ soil remediation according to the invention;

fig. 3 is a schematic structural view of a block piece in a device for in situ remediation of soil according to the present invention.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1-3, a device for repairing soil in situ according to the embodiment of the present invention comprises a drill rod body 1, an injection mechanism 2, an injection mechanism 3, and a drill bit 4. An injection mechanism 3 is arranged in the drill rod body 1, a drill bit 4 is fixedly arranged at the lower end of the injection mechanism 3, the drill bit 4 drills in a soil layer, and the drill rod body 1 stretches into the drill hole. The injection mechanism 2 is communicated with the drill rod body 1, high-pressure liquid is injected through the injection mechanism 2, the repairing liquid is injected into a soil layer needing repairing through the injection mechanism 3, and the soil is repaired in situ.

The concrete structure is as follows: the drill rod body 1 is of a hollow structure, namely a cavity 11 is formed in the drill rod body. The injection mechanism 2 comprises a high-pressure pump (not shown) and a water pipe 21, and the water outlet end of the water pipe is provided with a high-pressure joint. The water pipe 21 is communicated with the cavity 11 of the drill rod body, the high-pressure pump is communicated with a liquid storage tank (not shown), liquid in the liquid storage tank is introduced into the cavity 11 of the drill rod body through the water pipe 21 by the high-pressure pump, and high-pressure liquid is injected into the cavity of the drill rod body. The injection mechanism 3 includes a plurality of injection pipes and nozzles. Be equipped with a plurality of injection pipes on injection mechanism's the vertical direction, can pour into repair solution to the soil layer of the different degree of depth simultaneously, restore the soil of the different degree of depth soil layers. The treatment efficiency of soil remediation is improved. The number of the injection pipes in this embodiment is 3, and the 3 injection pipes are sequentially arranged in the cavity 11 of the drill rod body from top to bottom, that is, the first injection pipe 31, the second injection pipe 32 and the third injection pipe 33, and each injection pipe and the drill rod body 1 are coaxially arranged. Taking the first injection pipe 31 as an example, a plurality of water outlets 311 are arranged on the same circumference of the injection pipe, each water outlet 311 is correspondingly provided with a nozzle 34, and the spray holes of the nozzles 34 are overlapped with the axes of the water outlets. The distance from the water outlet end of the nozzle 34 to the drill rod axis is less than or equal to the distance from the outer surface of the drill rod body to the drill rod axis. When the drill rod drills, the nozzle 34 does not generate rotary friction with the soil layer, and the nozzle 34 can be protected. A movable plugging piece 35 is arranged in the cavity of the injection pipe, and the plugging piece 35 is arranged corresponding to the water outlet, namely the nozzle. When the injection operation is not performed, the blocking piece 35 blocks the water outlet, so that the soil can be prevented from falling into the cavity of the injection pipe. A blocking piece 351 is arranged in the first injection pipe 31, a blocking piece 352 is arranged in the second injection pipe 32, a blocking piece 353 is arranged in the third injection pipe 33, and the blocking piece 351, the blocking piece 352 and the blocking piece 353 are connected through a connecting rod 36 to form a whole. The third injection pipe 33 is located at the tail end of the drill rod body 1, a drill bit mounting seat 41 is arranged at the upper end of the drill bit 4, and the drill bit mounting seat 41 is fixedly arranged on the third injection pipe 33. The drill mounting seat 41 is provided with a containing cavity 42, the containing cavity 42 is communicated with the cavity of the third injection pipe 33, a loop bar 43 is arranged in the containing cavity 42, the loop bar 43 is sleeved with the spring 37, the upper end of the spring is fixedly connected with the blocking piece 353, and the lower end of the spring is fixedly connected with the drill mounting seat 41.

During the construction, drill bit 4 is boring in waiting prosthetic soil, the drilling rod body of rod 1 stretches into the soil layer, injection mechanism 2 pours into high-pressure liquid into, high-pressure liquid erodes shutoff piece 351 in the first injection pipe 31, shutoff piece 351 receives decurrent pressure, shutoff piece 351 passes through connecting rod 36 extrusion spring 37, shutoff piece downstream in the injection pipe cavity, the delivery port on the injection pipe is opened, because the effect of pressure, intraductal high-pressure solution is from the nozzle blowout, pour into in the soil layer, restore soil. Because be equipped with a plurality of injection pipes in the vertical direction of injection mechanism, can pour into repair solution to the soil layer of the different degree of depth simultaneously, restore the soil of the different degree of depth soil layer. The treatment efficiency of soil remediation is improved. After the injection and repair are finished, the high-pressure liquid is stopped from being injected, the restoring action of the spring pushes the plugging piece to move upwards, the plugging piece plugs the water inlet on the injection pipe, and the sewage outside the pipe can be prevented from flowing backwards.

Preferably, the first injection pipe 31 is provided with a cylinder section 312, a conical contraction section 313, a cylinder throat section 314 and a conical diffusion section 315 in sequence from the liquid inlet to the liquid outlet, the conical diffusion section 315 is provided with a plurality of water outlet holes 311, each water outlet hole 311 is provided with a nozzle 34 in a one-to-one correspondence manner, and the spray holes of the nozzles coincide with the axis of the water outlet hole. Preferably, the water outlet hole 311 is arranged close to the liquid outlet of the cylindrical throat section. The second injection pipe 32 is provided with a first cylinder section and a second cylinder section or a conical diffusion section in sequence from a liquid inlet to a liquid outlet, the second injection pipe 32 is a conical diffusion section in this embodiment, the conical diffusion section is provided with a plurality of water outlet holes, the water outlet holes 311 are provided with nozzles 34 in a one-to-one correspondence manner, the spray holes of the nozzles coincide with the axes of the water outlet holes, and the water outlet holes 311 are arranged close to the liquid outlet of the cylinder throat section.

The cavity of the first water injection pipe 31 adopts the structure as described above, namely, the structure is similar to a Venturi tube, high-pressure water enters from the cylinder section 312, enters the cylinder throat section 314 after passing through the cone section contraction section 313, the water flow rate is accelerated and pressurized, the water is diffused at the cone diffusion section 315, the pressure is released, the cone diffusion section 315 close to the cylinder throat section 314 is provided with the water outlet 311, the water pressure is released outwards through the 311 part, the water pressure injected into the soil layer can be increased, the liquid can penetrate into the soil layer more quickly, the transverse penetration depth is deeper, and the soil treatment area is increased. The second main water pipe 32 is also constructed like a venturi tube in the same principle as the first injection pipe 31.

Preferably, the plugging member 351 is arranged on the conical diffusion section 315, the plugging member 351 is in a truncated cone shape, and the top of the plugging member is in a semicircular structure. When the spring 37 is in the extended state, the top of the blocking member 351 extends into the cylindrical throat section 314 to block the cylindrical throat section 314. The outer surface of the blocking piece 351 is attached to the inner surface of the conical diffusion 315 section to block the water outlet hole 311. Avoid at the drilling rod rotation in-process, earth gets into inside the drilling rod through nozzle and delivery port.

Preferably, in the above technical solution, a protective cover 3511 is disposed at the top of the blocking piece 351. When the blocking piece 351 is flushed by the high-pressure solution, the protective cover 3511 plays a role in protecting the blocking piece 351.

Preferably, the third injection pipe 33 is provided with a first cylinder section 331 and a second cylinder section 332 in sequence from a liquid inlet to a liquid outlet, the second cylinder section 332 is provided with a plurality of water outlet holes 333, each water outlet hole 333 is provided with a nozzle 34 in a one-to-one correspondence manner, a cylindrical blocking piece 353 is arranged in the second cylinder section 332, a sealing ring 3531 is arranged on the periphery of the blocking piece 353, and the sealing ring 3531 is located below the water outlet holes 333. The sealing ring 3531 is arranged, so that water can be prevented from permeating into a cavity below the sealing ring for accommodating the spring, and the service life of the spring is prolonged.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A device for in situ remediation of soil, comprising:

the drill rod body is of a hollow structure;

the injection mechanism comprises a high-pressure pump and a water pipe, the water pipe is communicated with the cavity of the drill rod body, and the high-pressure pump is communicated with the liquid storage tank and is used for introducing high-pressure liquid into the water pipe;

the injection mechanism comprises a plurality of injection pipes and nozzles, the injection pipes are of a hollow structure, the injection pipes are sequentially arranged in a cavity of the drill rod body from top to bottom, the injection pipes and the drill rod body are coaxially arranged, a plurality of nozzles are arranged on one circumference of each injection pipe, the distance from the water outlet ends of the nozzles to the axis of the drill rod is smaller than or equal to the distance from the outer surface of the drill rod body to the axis of the drill rod, a movable plugging piece is arranged in the cavity of each injection pipe, the plugging pieces are arranged corresponding to the nozzles, the plugging pieces are connected through a connecting rod, and a spring is arranged at the lower end of each plugging piece in the injection pipe at the tail end of the drill rod body; and

the drill bit is fixedly arranged on the injection pipe at the tail end of the drill rod body, the upper end of the spring is connected with the plugging piece in the injection pipe at the tail end of the drill rod body, and the lower end of the spring is connected with the drill bit;

the high-pressure liquid acts on the spring, and the spring reciprocates to drive the plugging piece to move up and down so as to control the opening and closing of the nozzle.

2. The device for in-situ soil remediation according to claim 1, wherein the injection pipe at the uppermost end is provided with a cylindrical section, a conical contraction section, a cylindrical throat section and a conical diffusion section in sequence from a liquid inlet to a liquid outlet, the conical diffusion section is provided with a plurality of water outlets, each water outlet is provided with the nozzle in a one-to-one correspondence manner, and the axes of the nozzles coincide with the axes of the water outlets.

3. The apparatus of claim 2, wherein the water outlet is located near the liquid outlet of the cylindrical throat section.

4. The device for in situ remediation of soil of claim 2, wherein said blocking member is disposed on said conical diffusion section, said blocking member being frustoconical and having a semi-circular top; when the spring is in an extending state, the top of the plugging piece extends towards the inside of the cylindrical throat section, the outer surface of the plugging piece is attached to the inner surface of the conical diffusion section, and the water outlet hole is plugged.

5. A device for in situ remediation of soil as claimed in claim 1 wherein the top of the block piece is provided with a shield.

6. The device for in-situ soil remediation of claim 1, wherein the injection pipe at the end of the drill rod body is provided with a first cylinder section and a second cylinder section in sequence from a liquid inlet to a liquid outlet, the second cylinder section is provided with a plurality of water outlets, each water outlet is provided with a nozzle in one-to-one correspondence, a cylindrical end plugging member is arranged in the second cylinder section, a sealing ring is arranged on the periphery of the end plugging member, and the sealing ring is located below the water outlet.

7. The device for in situ remediation of soil of claim 1, wherein said distal end block is semi-circular in configuration at its top end.

8. The device for in situ remediation of soil of claim 1, wherein the water outlet end of the water pipe is provided with a high pressure fitting.