High-pressure rotary spraying device for in-situ remediation of contaminated soil

Abstract

The utility model belongs to the technical field of soil remediation equipment, and provides a high-pressure rotary spraying device for in-situ remediation of contaminated soil, which comprises a drill rod provided with a flow channel, a drill bit arranged at the bottom end of the drill rod, a reaming component arranged above the drill bit and comprising a plurality of reaming pieces, the multiple reaming pieces are evenly arranged around the rotating center line of the drill rod and fixedly connected with the drill rod, a nozzle is arranged between any two adjacent reaming pieces and communicates with the flow channel, and the radius of the rotating arc line of each nozzle is smaller than or equal to that of the rotating arc line of the corresponding reaming piece. Therefore, the nozzle is not in contact with soil which is not excavated by the drill bit or the reaming piece. The high-pressure rotary spraying device for in-situ remediation of the contaminated soil is simple in structure and reasonable in design, and the nozzles are not prone to being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of soil remediation equipment, in particular to a high-pressure rotary spraying device for in-situ remediation of contaminated soil. Background Art

[0002] At present, high-pressure rotary jetting technology is mainly used to carry out in-situ remediation of contaminated deep soil. Figure 1 As shown, the utility model patent with authorization announcement number CN217941342U discloses an efficient organic contaminated soil high pressure rotary spraying in-situ remediation treatment device, including a drill rod, a conical drill bit is installed below the drill rod, and a plurality of cutting blades are arranged in the middle of the outer side of the conical drill bit, and a nozzle is fixedly installed on the top of each cutting blade. The efficient organic contaminated soil high pressure rotary spraying in-situ remediation treatment device sets the nozzle at the end of the cutting blade. During the drilling process, the nozzle directly contacts the soil that has not been excavated by the drill bit or the cutting blade, which has the risk of clogging and damaging the nozzle. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a high-pressure rotary spraying device for in-situ remediation of contaminated soil, so as to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a high-pressure rotary spraying device for in-situ remediation of contaminated soil, comprising a drill rod provided with a flow channel, a drill bit provided at the bottom end of the drill rod, a reaming assembly provided above the drill bit, the reaming assembly comprising a plurality of reaming parts, the plurality of reaming parts are evenly arranged around the rotation center line of the drill rod and fixedly connected to the drill rod, a nozzle is provided between any two adjacent reaming parts, the nozzle is connected to the flow channel, and the radius of the rotating arc line of the nozzle is less than or equal to the radius of the rotating arc line of the reaming part, so that the nozzle will not contact the soil that has not been excavated by the drill bit or the reaming part.

[0005] Furthermore, the nozzle is connected to the drill rod via an elastic member so that the nozzle can be offset to avoid the position when it contacts the hard soil.

[0006] Furthermore, the elastic member is a hollow elastic tube, a first end of the elastic tube is fixedly connected to the drill rod and communicated with the flow channel, and a second end of the elastic tube is fixedly connected to the nozzle and communicated with the nozzle.

[0007] Furthermore, the elastic tube is made of rubber.

[0008] Furthermore, the nozzle is connected to the flow channel through a hose, the elastic member is a spring, the spring is sleeved on the hose, and the first end of the spring is fixedly connected to the drill rod, and the second end of the spring is fixedly connected to the nozzle.

[0009] Furthermore, a hollow water outlet head is provided at the spray hole of the nozzle, and the water outlet head is made of a deformable flexible material.

[0010] Furthermore, the water outlet head is made of silicone.

[0011] Beneficial effects of the utility model:

[0012] The high-pressure rotary spraying device for in-situ remediation of contaminated soil provided by the utility model makes the radius of the rotating arc line of the nozzle less than or equal to the radius of the rotating arc line of the reamer, so that the nozzle will not contact the soil that has not been excavated by the drill bit or the reamer, thereby reducing the risk of nozzle clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0014] Figure 1 A three-dimensional view of a highly efficient high-pressure rotary spraying in-situ remediation treatment device for organic contaminated soil in the prior art;

[0015] Figure 2 A three-dimensional view of a high-pressure rotary spraying device for in-situ remediation of contaminated soil provided by an embodiment of the utility model;

[0016] Figure 3 for Figure 2 An enlarged view of section A is shown;

[0017] Figure 4 for Figure 3 An enlarged view of section B is shown;

[0018] Figure 5 A three-dimensional view of a high-pressure rotary spraying device for in-situ remediation of contaminated soil provided by another embodiment of the utility model;

[0019] Figure 6 for Figure 5 An enlarged view of section C is shown;

[0020] Figure 7 for Figure 6 An enlarged view of section D is shown.

[0021] Reference numerals:

[0022] 100, drill rod; 200, drill bit; 300, hole expander; 400, nozzle; 510, elastic tube; 520, spring; 600, hose; 700, water outlet. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0024] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figure 2-7 As shown, the utility model provides a high-pressure rotary spraying device for in-situ remediation of contaminated soil, including a drill rod 100 provided with a flow channel. It should be noted that the flow channel mentioned here can be a channel opened on the drill rod 100 for the circulation of the repair agent, or a pipeline provided in the drill rod 100 for the circulation of the repair agent, etc. A drill bit 200 is provided at the bottom end of the drill rod 100, and a hole expansion assembly is provided above the drill bit 200. The hole expansion assembly includes a plurality of hole expansion members 300, and the plurality of hole expansion members 300 are evenly arranged around the rotation center line of the drill rod 100 and fixedly connected to the drill rod 100. When in use, the drill rod 100 rotates, thereby driving the drill bit 200 to rotate to achieve the purpose of drilling, and under the action of the hole expansion assembly, the purpose of expanding the hole drilled by the drill bit 200 is achieved.

[0030] A nozzle 400 is disposed between any two adjacent reamer components 300, and the nozzle 400 is connected to the flow channel, so that the repair agent can enter the nozzle 400 through the flow channel and finally be sprayed out from the spray hole of the nozzle 400. The radius of the rotating arc of the nozzle 400 is less than or equal to the radius of the rotating arc of the reamer component 300, so that the nozzle 400 will not contact the soil that has not been excavated by the drill bit 200 or the reamer component 300, so that the nozzle 400 will only contact the soft soil (i.e., the soil excavated and loosened by the drill bit 200 or the reamer component), thereby reducing the possibility of clogging of the nozzle 400.

[0031] In one embodiment, the nozzle 400 is connected to the drill rod 100 through an elastic member, so that when the nozzle 400 contacts the hard soil, it can be deflected to avoid the position. When the nozzle 400 contacts the hard soil excavated by the reaming assembly or the drill bit 200, the elastic member can be deformed, so that the nozzle is deflected and does not collide with the soil, thereby further reducing the possibility of clogging of the nozzle 400.

[0032] like Figure 2-4 As shown, in one embodiment, the elastic member is a hollow elastic tube 510, a first end of the elastic tube 510 is fixedly connected to the drill rod 100 and communicates with the flow channel, and a second end of the elastic tube 510 is fixedly connected to the nozzle 400 and communicates with the nozzle 400. Preferably, the elastic tube 510 is made of rubber.

[0033] like Figure 5-7 As shown, in one embodiment, the nozzle 400 is connected to the flow channel through a hose 600, the elastic member is a spring 520, the spring 520 is sleeved on the hose 600, and the first end of the spring 520 is fixedly connected to the drill rod 100, and the second end is fixedly connected to the nozzle 400.

[0034] In one embodiment, a hollow water outlet head 700 is provided at the spray hole of the nozzle 400, and the water outlet head 700 is made of a deformable flexible material. When the water outlet head 700 from the spray hole contacts the soil, the water outlet head 700 can bend and deform without blocking the spray hole, thereby achieving the purpose of further reducing the wind direction blocked by the nozzle 400. Preferably, the water outlet head 700 is made of silicone.

[0035] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A high-pressure rotary jet device for in-situ remediation of contaminated soil, comprising a drill rod (100) provided with a flow channel, a drill bit (200) provided at the bottom end of the drill rod (100), characterized in that: A reaming assembly is arranged above the drill bit (200), and the reaming assembly includes a plurality of reaming members (300). The plurality of reaming members (300) are evenly arranged around the rotation center line of the drill rod (100) and are fixedly connected to the drill rod (100). A nozzle (400) is arranged between any two adjacent reaming members (300). The nozzle (400) is connected to the flow channel, and the radius of the rotating circular arc of the nozzle (400) is less than or equal to the radius of the rotating circular arc of the reaming member (300), so that the nozzle (400) will not contact the soil that has not been excavated by the drill bit (200) or the reaming member (300).

2. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 1 is characterized in that: The nozzle (400) is connected to the drill rod (100) via an elastic member, so that when the nozzle (400) contacts hard soil, it can be deflected to avoid the position.

3. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 2 is characterized in that: The elastic member is a hollow elastic tube (510), a first end of the elastic tube (510) being fixedly connected to the drill rod (100) and communicating with the flow channel, and a second end of the elastic tube (510) being fixedly connected to the nozzle (400) and communicating with the nozzle (400).

4. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 3 is characterized in that: The elastic tube (510) is made of rubber.

5. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 2, characterized in that: The nozzle (400) is connected to the flow channel via a hose (600); the elastic member is a spring (520); the spring (520) is sleeved on the hose (600); a first end of the spring (520) is fixedly connected to the drill rod (100) and a second end of the spring (520) is fixedly connected to the nozzle (400).

6. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to any one of claims 1 to 5, characterized in that: A hollow water outlet head (700) is provided at the spray hole of the nozzle (400), and the water outlet head (700) is made of a deformable flexible material.

7. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 6, characterized in that: The water outlet head (700) is made of silica gel.

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