Fertilizer groove backfill soil bacterial liquid injection equipment based on MICP technology

Abstract

The utility model relates to a fertilizer groove backfill soil bacterial liquid injection device based on the MICP technology. The fertilizer groove backfill soil bacterial liquid injection device comprises an injection gun rack, and the injection gun rack is provided with a first gun head used for injecting bacterial liquid and a second gun head used for injecting urea; the injection gun frame is provided with a lifting part used for driving the injection gun frame to ascend and descend so that the first gun head and the second gun head can go deep into or be lifted away from the soil body. According to the fertilizer groove backfill soil bacterial liquid injection equipment based on the MICP technology, the cementation reinforcement effect of a soil body can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of building test and detection equipment, and in particular to a fertilizer tank backfill soil bacteria liquid injection device based on MICP technology. Background Art

[0002] The building fertilizer trough is the part of the building that is excavated to provide a working surface for construction workers during construction. It usually refers to the space between the outer wall of the building basement or the outer wall of the foundation and the side of the foundation pit. The fertilizer trough will be backfilled after the main structure of the building is capped and the waterproofing and protective layer of the outer wall of the basement structure are completed. If the backfill soil of the fertilizer trough is not compacted or rolled in place, and the density of the backfill soil does not meet the specifications and design requirements, it will cause the backfill soil to deform and settle under the load during the use stage. The settlement of the backfill soil will not only cause the settlement and cracking of scattered water, but also cause deformation and even cracking and damage to water supply, gas supply and sewage pipelines; Microbial induced calcium carbonate precipitation technology (MICP) is an emerging green technology for sustainable development. It can use mineralized microorganisms to induce calcium carbonate precipitation, and then cement and reinforce the soil to improve the performance of the soil. Applying MICP technology to the backfill of building fertilizer troughs can effectively solve the problem of loose backfill of fertilizer troughs, enhance the density of backfill soil, and improve its mechanical properties and water permeability.

[0003] In the prior art, bacterial solution and urea are injected into the soil respectively, and the bacterial solution and urea diffuse and mix with each other in the soil, thereby generating a cementing reaction to cement and reinforce the soil, thereby improving the performance of the soil; however, in actual operation, when the bacterial solution and urea are injected into the soil for cementation, due to the limited diffusion capacity of the bacterial solution and urea, the cementing effect of the backfill soil deep in the soil is poor, and therefore further improvement is needed. Utility Model Content

[0004] In order to improve the cementation and reinforcement effect of the soil, the present application provides a fertilizer tank backfill soil bacteria liquid injection device based on MICP technology.

[0005] The present application provides a fertilizer tank backfill soil bacteria liquid injection device based on MICP technology, which adopts the following technical solutions:

[0006] A fertilizer tank backfill soil bacterial liquid injection device based on MICP technology, comprising an injection gun frame, wherein the injection gun frame is respectively provided with a first gun head for injecting bacterial liquid and a second gun head for injecting urea; the injection gun frame is provided with a lifting member, and the lifting member is used to drive the injection gun frame to rise and fall so that the first gun head and the second gun head penetrate into or lift out of the soil.

[0007] By adopting the above technical solution, through the arrangement of the injection gun rack and the lifting member, the injection gun rack provides an installation carrier for the first gun head and the second gun head. After the injection gun rack is transferred to the specified position, the injection gun rack is driven downward by the lifting member, driving the first gun head and the second gun head to move downward synchronously and insert into the soil. The bacterial liquid is injected into the soil through the first gun head, and the urea is injected into the soil through the second gun head, so that the bacterial liquid and urea are diffused and mixed deep in the soil, and a cementation reaction occurs to cement and reinforce the soil. The first gun head and the second gun head are inserted into the soil, so that the bacterial liquid and urea can better contact with the backfill soil deep in the soil, thereby improving the cementation and reinforcement effect of the backfill soil deep in the soil.

[0008] Optionally, it also includes a bacteria liquid barrel and a urea barrel, a first delivery pipe is connected between the bacteria liquid barrel and the first gun head, and the first delivery pipe is provided with a first pumping member; a second delivery pipe is connected between the urea barrel and the second gun head, and the second delivery pipe is provided with a second pumping member.

[0009] By adopting the above technical solution, through the arrangement of the bacteria liquid barrel and the urea barrel, after the first gun head and the second gun head are inserted into the soil, the bacteria liquid in the bacteria liquid barrel is pumped from the first delivery pipe to the first gun head through the first pumping member, and the urea in the urea barrel is pumped from the second delivery pipe to the second gun head through the second pumping member, thereby respectively pumping the bacteria liquid and urea into the soil, so as to perform cementation reinforcement of backfill soil deep in the soil.

[0010] Optionally, multiple first gun tips and multiple second gun tips are provided, the first delivery pipe is connected to multiple first branch pipes, the multiple first branch pipes are provided corresponding to the multiple first gun tips, and the outlet end of each first branch pipe is connected to the corresponding first gun tip; the second delivery pipe is connected to multiple second branch pipes, the multiple second branch pipes are provided corresponding to the multiple second gun tips, and the outlet end of each second branch pipe is connected to the corresponding second gun tip, and the multiple first gun tips and the multiple second gun tips are arranged in an alternating manner.

[0011] By adopting the above-mentioned technical solution, by setting up multiple first gun heads and multiple second gun heads, the injection range of the overall structure is greatly improved, thereby improving the work efficiency; the multiple first gun heads and the multiple second gun heads are arranged in a staggered manner, so that after the bacterial solution is injected into the soil through the multiple first gun heads and the urea is injected into the soil through the multiple second gun heads, the bacterial solution and the urea can be better mixed, thereby improving the cementation effect.

[0012] Optionally, the first gun head includes a connecting tube and a reaming cone head, one end of the connecting tube is used to connect to the outlet end of the first branch pipe, and the reaming cone head is connected to the end of the connecting tube away from the first branch pipe; a plurality of liquid outlets are provided on the peripheral wall of the connecting tube, and all the liquid outlets are arranged at intervals around the axial direction of the connecting tube.

[0013] By adopting the above technical solution, through the setting of the connecting tube and the reaming cone head, the reaming cone head is connected to the first branch pipe through the connecting tube, and the injection gun holder is moved down. The reaming cone head can squeeze the soil to facilitate the connecting tube to enter the soil.

[0014] Optionally, an installation groove is provided on the outer peripheral wall of the outlet end of the first branch pipe, a limit strip is slidably installed in the installation groove, the limit strip is provided with a limit block, a return spring is provided in the installation groove, and the return spring normally makes the limit block exposed from the installation groove; the inner peripheral wall of the connecting tube is provided with a limit groove, and when the connecting tube is sleeved on the first branch pipe, the limit block is matched and embedded in the limit groove.

[0015] By adopting the above-mentioned technical solution and setting the limit block and the limit groove, when the connecting tube is installed, the connecting tube is sleeved on the first branch pipe, and when the limit groove of the connecting tube moves to a relative state with the limit block, the limit block is embedded in the limit groove under the action of the return spring, thereby fixing the connecting tube, which greatly improves the convenience of disassembly and assembly between the connecting tube and the first branch pipe.

[0016] Optionally, a first magnet is embedded in the limiting block, and a second magnet is embedded in the inner wall of the limiting groove. When the limiting block is embedded in the limiting groove, the first magnet and the second magnet are magnetically attracted to each other.

[0017] By adopting the above technical solution, through the arrangement of the first magnet and the second magnet, after the limit block is embedded in the limit groove, the first magnet is magnetically attracted to the second magnet, so that there is a magnetic attraction force between the limit block and the connecting tube, thereby reducing the possibility that the first branch pipe vibrates during the insertion of the connecting tube into the soil, causing the limit block to be separated from the limit groove. The magnetic force between the first magnet and the second magnet and the elastic force of the return spring jointly keep the limit block embedded in the limit groove, thereby greatly improving the connection firmness between the connecting tube and the first branch pipe.

[0018] Optionally, there are multiple limiting grooves, and the multiple limiting grooves are arranged at intervals along the axial direction of the connecting tube.

[0019] By adopting the above-mentioned technical solution, by setting a plurality of limit grooves and embedding the limit blocks in different limit grooves, the length of the connecting tube can be adjusted, and then used to control the depth of the connecting tube extending into the soil body, so as to facilitate the injection of bacterial solution and urea into the backfill soil at different depths of the soil body, thereby improving the adaptability of the overall structure.

[0020] Optionally, it also includes a walking push frame, which is provided with walking wheels, and the injection gun rack is slidably installed on the walking push frame; the lifting component includes a screw lifter, which is installed between the walking push frame and the injection gun rack to drive the injection gun rack to rise and fall.

[0021] By adopting the above-mentioned technical solution, through the setting of the walking push frame, the walking push frame can be pushed to move the injection gun frame to different positions, so that the first gun head and the second gun head can inject bacterial liquid or urea into different positions of the soil, thereby improving the convenience of moving the overall structure.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Through the setting of the injection gun frame and the lifting member, the injection gun frame provides a mounting carrier for the first gun head and the second gun head. After the injection gun frame is transferred to the designated position, the injection gun frame is driven downward by the lifting member, driving the first gun head and the second gun head to move downward synchronously and insert into the soil. The bacterial liquid is injected into the soil through the first gun head, and the urea is injected into the soil through the second gun head, so that the bacterial liquid and the urea are diffused and mixed deep in the soil, and a cementation reaction occurs to cement and reinforce the soil. The first gun head and the second gun head are inserted into the soil, so that the bacterial liquid and the urea can better contact with the backfill soil deep in the soil, thereby improving the cementation and reinforcement effect of the backfill soil deep in the soil;

[0024] 2. By setting a plurality of first gun heads and a plurality of second gun heads, the injection range of the overall structure is greatly increased, thereby improving the work efficiency; the plurality of first gun heads and the plurality of second gun heads are arranged in a staggered manner, so that after the bacterial solution is injected into the soil through the plurality of first gun heads and the urea is injected into the soil through the plurality of second gun heads, the bacterial solution and the urea can be better mixed, thereby improving the cementation effect;

[0025] 3. Through the setting of the limit block and the limit groove, when the connecting tube is installed, the connecting tube is sleeved on the first branch pipe. When the limit groove of the connecting tube moves to a relative state with the limit block, the limit block is embedded in the limit groove under the action of the return spring, thereby fixing the connecting tube, which greatly improves the convenience of disassembly and assembly between the connecting tube and the first branch pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0027] Figure 2 This is a schematic diagram of the structure of Embodiment 1 in which the first gun tip and the second gun tip are arranged alternately;

[0028] Figure 3 is a partial cross-sectional view of the first gun tip according to Embodiment 1;

[0029] Figure 4 is a partial cross-sectional view of the limiting strip in Embodiment 2;

[0030] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0031] Explanation of the reference numerals: 1. injection gun holder; 11. upper fixing frame; 12. middle fixing frame; 2. first gun head; 21. connecting tube; 211. liquid outlet; 212. limiting groove; 213. second magnet; 22. reaming cone head; 23. limit depth stop block; 3. second gun head; 4. bacteria liquid barrel; 41. first delivery pipe; 411. first pumping member; 42. first branch pipe; 421. mounting groove; 43. first hose; 5. urea barrel; 51. second delivery pipe; 511. second pumping member; 52. second branch pipe; 53. second hose; 6. limiting strip; 61. limiting block; 611. first magnet; 62. reset spring; 63. unlocking block; 7. walking push frame; 71. walking wheel; 72. trolley handrail; 73. parking support rod; 8. screw lift; 9. solenoid valve. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] Embodiment 1:

[0034] The embodiment of the present application discloses a fertilizer tank backfill soil bacteria liquid injection device based on MICP technology.

[0035] Reference Figure 1 A fertilizer tank backfill soil and bacterial liquid injection device based on MICP technology includes a walking push frame 7, an injection gun frame 1, a bacterial liquid barrel 4 and a urea barrel 5. In this embodiment, the walking push frame 7 is configured as a rectangular ring frame, and a plurality of walking wheels 71 are rotatably installed at the bottom of the walking push frame 7. A trolley handrail 72 is fixedly installed on one side of the walking push frame 7, and a parking support rod 73 is fixedly installed at the bottom of the trolley handrail 72. With such a design, the walking push frame 7 is pushed by the trolley handrail 72, and the walking push frame 7 can move under the action of the walking wheels 71, thereby improving the convenience of transferring the walking push frame 7.

[0036] Reference Figure 1 , Figure 2 The bacterial liquid barrel 4 is used to store bacterial liquid. The bacterial liquid barrel 4 is connected to a first delivery pipe 41. The inlet end of the first delivery pipe 41 is connected to the bacterial liquid barrel 4. A plurality of first hoses 43 are connected to the peripheral wall of the first delivery pipe 41. All the first hoses 43 are arranged at intervals along the length direction of the first delivery pipe 41. The inlet end of each first hose 43 is connected to the first delivery pipe 41. Each first hose 43 is connected to a first branch pipe 42. The inlet end of the first branch pipe 42 is connected to the outlet end of the first hose 43. All the first branch pipes 42 are connected to the first delivery pipe 41 through the corresponding first hose 43. The first delivery pipe 41 is provided with a first pumping member 411. The first pumping member 411 is used to pump the bacterial liquid in the bacterial liquid barrel 4 to the first branch pipe 42.

[0037] Reference Figure 1 , Figure 2 The urea tank 5 is used to store urea. The urea tank 5 is connected to a second delivery pipe 51. The inlet end of the second delivery pipe 51 is connected to the urea tank 5. A plurality of second flexible hoses 53 are connected to the peripheral wall of the second delivery pipe 51. All the second flexible hoses 53 are arranged at intervals along the length direction of the second delivery pipe 51. The inlet end of each second flexible hose 53 communicates with the second delivery pipe 51; each second flexible hose 53 is connected to a second branch pipe 52. The inlet end of the second branch pipe 52 communicates with the outlet end of the second flexible hose 53. All the second branch pipes 52 are communicated with the second delivery pipe 51 through the corresponding second flexible hoses 53; the second delivery pipe 51 is provided with a second pumping member 511. The second pumping member 511 is used to pump the urea in the urea tank 5 to the second branch pipe 52.

[0038] Refer to Figure 1 、 Figure 2 In this embodiment, both the first pumping member 411 and the second pumping member 511 are configured as water pumps; an electromagnetic valve 9 is installed on each first branch pipe 42 and each second branch pipe 52. The electromagnetic valve 9 is used to open or close the first branch pipe 42 or the second branch pipe 52.

[0039] Refer to Figure 1 、 Figure 2 The injection gun holder 1 is slidably mounted on the walking push frame 7. The injection gun holder 1 includes an upper fixing frame 11 and a middle fixing frame 12. The upper fixing frame 11 and the middle fixing frame 12 are arranged at intervals in the height direction. The upper fixing frame 11 is located above the middle fixing frame 12. In this embodiment, the shapes of both the upper fixing frame 11 and the middle fixing frame 12 are set as a "field" shape.

[0040] The axes of all the first branch pipes 42 and the axes of all the second branch pipes 52 are both vertically arranged. The first branch pipes 42 are sequentially passed through the upper fixing frame 11 and the middle fixing frame 12 from top to bottom, and the first branch pipes 42 are respectively fixedly connected to the upper fixing frame 11 and the middle fixing frame 12. The second branch pipes 52 are sequentially passed through the upper fixing frame 11 and the middle fixing frame 12 from top to bottom, and the second branch pipes 52 are respectively fixedly connected to the upper fixing frame 11 and the middle fixing frame 12. The upper fixing frame 11 and the middle fixing frame 12 are integrally connected to each other through the first branch pipes 42 and the second branch pipes 52 respectively.

[0041] Refer to Figure 1 、 Figure 2The injection gun frame 1 is respectively equipped with a first gun head 2 and a second gun head 3. The first gun head 2 is used to inject bacterial solution. In this embodiment, there are multiple first gun heads 2, and the multiple first gun heads 2 are correspondingly arranged with the multiple first branch pipes 42, and the outlet end of each first branch pipe 42 is connected to the corresponding first gun head 2; the second gun head 3 is used to inject urea, and there are multiple second gun heads 3, and the multiple second gun heads 3 are correspondingly arranged with the multiple second branch pipes 52, and the outlet end of each second branch pipe 52 is connected to the corresponding second gun head 3; it should be noted that in this embodiment, the multiple first gun heads 2 and the multiple second gun heads 3 are arranged in a staggered manner, that is, the multiple first branch pipes 42 and the multiple second branch pipes 52 are arranged in a staggered manner.

[0042] Reference Figure 1 , Figure 2 , Figure 3 The structure of the first gun head 2 is the same as that of the second gun head 3. The structure of the first gun head 2 is explained below as an example, and the structure of the second gun head 3 can be obtained similarly; the first gun head 2 includes a connecting tube 21 and a reaming cone head 22, the axial direction of the connecting tube 21 is vertically arranged, and one end of the connecting tube 21 is used to be sleeved on the outer peripheral wall of the outlet end of the first branch pipe 42. In this embodiment, the inner peripheral wall of the connecting tube 21 is threadedly connected to the outer peripheral wall of the first branch pipe 42 so that the connecting tube 21 can be detachably installed on the first branch pipe 42; a plurality of liquid outlets 211 are provided on the peripheral wall of the connecting tube 21, and all the liquid outlets 211 are arranged at intervals around the axial direction of the connecting tube 21, and the reaming cone head 22 is used to squeeze open the soil so that the connecting tube 21 can be inserted into the soil, and the reaming cone head 22 is connected to one end of the connecting tube 21 away from the first branch pipe 42, and the connecting tube 21 and the reaming cone head 22 are integrally formed.

[0043] Reference Figure 2 , Figure 3 A limit depth stopper 23 is fixedly installed on the outer peripheral wall of the connecting tube 21. The limit depth stopper 23 is located at the connection between the connecting tube 21 and the first branch pipe 42, so as to abut against the surface of the soil. That is, when the connecting tube 21 is inserted into the soil through the reaming cone head 22, the limit depth stopper 23 abuts against the surface of the soil to stop the connecting tube 21 to ensure that the connecting tube 21 is inserted into the specified depth of the soil.

[0044] Reference Figure 1The injection gun rack 1 is provided with a lifting member, which is used to drive the injection gun rack 1 to rise and fall so that the first gun head 2 and the second gun head 3 are deeply inserted into or lifted out of the soil; in this embodiment, the lifting member is set as a screw lift 8 (the screw lift 8 is a prior art structure, and its structure is not elaborated too much here), and a plurality of screw lifts 8 are provided, and a plurality of screw lifts 8 are installed at intervals on the walking push frame 7, and the output end of the screw lift 8 is connected to the upper fixed frame 11, and the injection gun rack 1 is slidably installed on the walking push frame 7 through the screw lift 8; driving the screw lift 8 to move can make the injection gun rack 1 rise and fall, and then the first gun head 2 and the second gun head 3 are inserted into the soil.

[0045] The implementation principle of Example 1 of the present application is: push the walking push frame 7 to drive the injection gun frame 1 to move to the specified position, and then drive the injection gun frame 1 to move downward, so that all the first gun heads 2 and all the second gun heads 3 are inserted into the soil body, so that the bacterial liquid and urea can be injected into the soil body respectively, so that the bacterial liquid and urea can better contact with the backfill soil deep in the soil body, thereby improving the bonding and reinforcement effect of the backfill soil deep in the soil body.

[0046] By setting multiple first gun heads 2 and multiple second gun heads 3, on the one hand, the multiple first gun heads 2 and the multiple second gun heads 3 greatly improve the injection range of the overall structure, thereby improving the work efficiency; on the other hand, the multiple first gun heads 2 and the multiple second gun heads 3 are arranged in a staggered manner. After the bacterial solution is injected into the soil through the multiple first gun heads 2 and the urea is injected into the soil through the multiple second gun heads 3, the bacterial solution and the urea can be better diffused and mixed, thereby improving the cementation effect.

[0047] Embodiment 2:

[0048] The embodiment of the present application discloses a fertilizer tank backfill soil bacteria liquid injection device based on MICP technology.

[0049] Reference Figure 4 , Figure 5 The difference between the fertilizer tank backfill soil bacteria liquid injection device based on MICP technology disclosed in the embodiment of the present application and embodiment 1 is that:

[0050] In this embodiment, a plurality of mounting grooves 421 are provided on the outer peripheral wall of the outlet end of the first branch pipe 42, and all the mounting grooves 421 are arranged at intervals around the axial direction of the first branch pipe 42. A limit strip 6 is slidably installed in each mounting groove 421, and both ends of the limit strip 6 are extended along the axial direction of the first branch pipe 42. A limit block 61 is fixedly installed on the side wall of the limit strip 6, and a return spring 62 is installed in the mounting groove 421. One end of the return spring 62 is fixedly connected to the inner wall of the mounting groove 421, and the other end is fixedly connected to the limit strip 6. The return spring 62 normally causes the limit block 61 to be exposed outside the mounting groove 421.

[0051] The inner circumferential wall of the connecting tube 21 is provided with a limiting groove 212, and the number of the limiting grooves 212 is set in plurality. The plurality of limiting grooves 212 are arranged at intervals along the axial direction of the connecting tube 21, and the shape of the limiting groove 212 is adapted to the shape of the limiting block 61. When the connecting tube 21 is sleeved on the outer circumferential wall of the first branch pipe 42, the limiting block 61 is matched and embedded in the limiting groove 212; it should be noted that, in the present embodiment, the limit depth stop block 23 is detachably mounted on the outer circumferential wall of the connecting tube 21 by bolt fixing (the bolt connection is not shown in the figure). In order to match the installation of the limit depth stop block 23, the outer circumferential wall of the connecting tube 21 needs to be provided with a plurality of threaded holes (not shown in the figure). The plurality of threaded holes are arranged at intervals along the axial direction of the connecting tube 21 for bolt fixing of the limit depth stop block 23.

[0052] Reference Figure 4 , Figure 5 In this embodiment, an unlocking block 63 is fixedly installed on the side wall of the limit strip 6. The unlocking block 63 is located above the limit block 61. The return spring 62 normally makes the unlocking block 63 exposed in the installation groove 421. When the unlocking block 63 moves into the installation groove 421, the limit block 61 moves into the installation groove 421.

[0053] Reference Figure 4 , Figure 5 The limiting block 61 is embedded with a first magnet 611 , and the inner wall of the limiting groove 212 is embedded with a second magnet 213 . When the limiting block 61 is embedded in the limiting groove 212 , the first magnet 611 and the second magnet 213 are magnetically attracted to each other.

[0054] The implementation principle of Example 2 of the present application is as follows: when the first gun head 2 is installed, the unlocking block 63 is pressed to move the limit block 61 into the installation groove 421, and then the connecting tube 21 is sleeved on the outer peripheral wall of the first branch pipe 42, and the limit groove 212 is aligned with the limit block 61, and then the unlocking block 63 is released, and the limit block 61 is embedded in the limit groove 212 under the action of the reset spring 62 to fix the connecting tube 21, which greatly improves the convenience of disassembly and assembly of the connecting tube 21; by setting a plurality of limit grooves 212, the limit block 61 can be inserted into different limit grooves 212, and the position of the limit depth block 23 can be adjusted accordingly, so that the depth of the connecting tube 21 inserted into the soil can be adjusted, which greatly improves the adaptability of the overall structure.

[0055] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fertilizer tank backfill soil and bacteria liquid injection device based on MICP technology, characterized by: The invention comprises an injection gun frame (1), wherein the injection gun frame (1) is provided with a first gun head (2) for injecting bacterial liquid and a second gun head (3) for injecting urea; the injection gun frame (1) is provided with a lifting member, wherein the lifting member is used to drive the injection gun frame (1) to rise and fall so that the first gun head (2) and the second gun head (3) are deeply inserted into or lifted out of the soil; and further comprises a bacterial liquid barrel (4) and a urea barrel (5), wherein a first delivery pipe (41) is connected between the bacterial liquid barrel (4) and the first gun head (2), and the first delivery pipe (41) is provided with a first pumping member (411); and a second delivery pipe (51) is connected between the urea barrel (5) and the second gun head (3), and the second delivery pipe (51) is provided with a second A pumping member (511); a plurality of the first gun heads (2) and the second gun heads (3) are provided, the first delivery pipe (41) is connected to a plurality of first branch pipes (42), the plurality of first branch pipes (42) are provided corresponding to the plurality of first gun heads (2), and the outlet end of each first branch pipe (42) is connected to the corresponding first gun head (2); the second delivery pipe (51) is connected to a plurality of second branch pipes (52), the plurality of second branch pipes (52) are provided corresponding to the plurality of second gun heads (3), and the outlet end of each second branch pipe (52) is connected to the corresponding second gun head (3), and the plurality of first gun heads (2) and the plurality of second gun heads (3) are arranged in a staggered manner.

2. A device according to claim 1, characterized in that: The first gun head (2) comprises a connecting tube (21) and a reaming cone head (22); one end of the connecting tube (21) is used to be connected to the outlet end of the first branch pipe (42); the reaming cone head (22) is connected to the end of the connecting tube (21) away from the first branch pipe (42); a plurality of liquid outlets (211) are provided on the peripheral wall of the connecting tube (21); all the liquid outlets (211) are arranged at intervals around the axial direction of the connecting tube (21).

3. A device according to claim 2, characterized in that: The outer peripheral wall of the outlet end of the first branch pipe (42) is provided with a mounting groove (421), a limit strip (6) is slidably installed in the mounting groove (421), the limit strip (6) is provided with a limit block (61), a return spring (62) is provided in the mounting groove (421), and the return spring (62) normally makes the limit block (61) exposed outside the mounting groove (421); the inner peripheral wall of the connecting tube (21) is provided with a limit groove (212), and when the connecting tube (21) is sleeved on the first branch pipe (42), the limit block (61) is matched and embedded in the limit groove (212).

4. A device according to claim 3, characterized in that: The limiting block (61) is embedded with a first magnet (611), and the inner wall of the limiting groove (212) is embedded with a second magnet (213); when the limiting block (61) is embedded in the limiting groove (212), the first magnet (611) and the second magnet (213) are magnetically attracted to each other.

5. A device according to claim 3, characterized in that: There are a plurality of the limiting grooves (212), and the plurality of limiting grooves (212) are arranged at intervals along the axial direction of the connecting tube (21).

6. A device according to claim 1, characterized in that: The invention also comprises a walking push frame (7), wherein the walking push frame (7) is provided with walking wheels (71), and the injection gun frame (1) is slidably mounted on the walking push frame (7); the lifting member comprises a screw lifter (8), and the screw lifter (8) is installed between the walking push frame (7) and the injection gun frame (1) to drive the injection gun frame (1) to move up and down.

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