Spinning grouting slurry mixing device and method

Abstract

The invention relates to the technical field of rotary jet grouting, in particular to a rotary jet grouting method grouting slurry mixing device and method.The rotary jet grouting method grouting slurry mixing device comprises a drilling machine vehicle body, a punching mechanism is installed on the drilling machine vehicle body, a slurry spraying mechanism is installed on the punching mechanism, a protection mechanism is installed on the slurry spraying mechanism, and a guide mechanism is installed at one end of the drilling machine vehicle body; a cleaning mechanism is installed on the guide mechanism, and a supporting mechanism is installed at the bottom of one end of the drilling machine vehicle body. Through cooperation of the punching mechanism and the supporting mechanism, stable drilling work on the ground is achieved, mortar can be sprayed out and is not prone to solidification through the mortar spraying mechanism, one side of the mortar spraying mechanism can be shielded and protected through the protection mechanism, it is prevented that mortar cannot be sprayed due to gravel blockage, the protection mechanism is driven by the mortar spraying mechanism to slide, and mortar spraying work is achieved; and mixed pouring of mortar and gravel in the hole is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of rotary jet grouting, in particular to a rotary jet grouting slurry mixing device and method. Background Art

[0002] Jet grouting is a method of using a drilling rig to place a jet grouting pipe and nozzle at the bottom of the pile. The pre-prepared slurry is passed through a high-pressure generator to give the liquid flow huge energy, and then it is ejected at high speed from the nozzle on the side of the grouting pipe to form a liquid flow with highly concentrated energy, which directly destroys the soil. During the injection process, the drill rod is rotated and lifted at the same time, so that the slurry and soil are fully mixed, forming a columnar consolidation body of a certain diameter in the soil, thereby strengthening the foundation.

[0003] However, traditional rotary jet nozzles lack good sealing and shielding protection measures, which causes the sand and gravel produced during drilling to wear or clog the nozzle, thereby causing the mortar to get stuck inside the nozzle and be unable to spray out. In severe cases, the mortar cannot be sprayed out. When the sealing of the nozzle is poor, the mortar is easy to solidify, which can easily cause the nozzle to be blocked, affecting subsequent grouting. At the same time, when the drill pipe is lifted, it is inconvenient to clean the sand and gravel on it, which makes it difficult to clean after solidification. There is also a lack of protective measures during lifting, which causes sand and gravel to be thrown onto the equipment and cause pollution. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a rotary jet grouting slurry mixing device and method.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a rotary jet grouting slurry mixing device, including a drilling rig body, a drilling rig body is equipped with a drilling mechanism, a spraying mechanism is equipped on the drilling mechanism, a protective mechanism is equipped on the spraying mechanism, a guide mechanism is equipped at one end of the drilling rig body, a cleaning mechanism is equipped on the guide mechanism, and a supporting mechanism is installed at the bottom of one end of the drilling rig body.

[0006] Specifically, the drilling mechanism includes a driving assembly, one end of the drilling rig body is cooperatively connected to the driving assembly, the bottom of the driving assembly is rotatably connected to a connecting pipe, a drill bit is installed at the bottom of the connecting pipe, a controller is installed on the top of the driving assembly, a delivery pipe is installed on one side of the driving assembly, one end of the delivery pipe is connected to one side of the connecting pipe, and the other end of the delivery pipe is connected to a pressure pump.

[0007] Specifically, the spraying mechanism includes a mounting groove, a symmetrical mounting groove is provided on the outer wall of the drill bit, a mounting block is detachably connected to the inside of the mounting groove, a guide groove and a spray hole are provided inside the mounting block, the spray hole is vertically connected to the guide groove, the spray hole extends to the outside of the mounting block, and a mounting tube is connected to the top of the mounting block, and the mounting tube is located at the top of the guide groove.

[0008] Specifically, a leather plug is provided inside the guide groove, and the leather plug is slidably connected to the inside of the guide groove through a compression spring, and the leather plug is located at one end of the spray hole.

[0009] Specifically, the protective mechanism includes a slide groove, and the outer wall of the drill bit is provided with two symmetrically distributed slide grooves, the slide groove is connected with the mounting groove, the slide groove is located at the bottom of the mounting groove, a protective plate is slidably connected inside the slide groove, the protective plate is slidably connected to the outer side of the mounting block, the spray hole is located on one side of the protective plate, a push rod is installed at the bottom of the leather plug, the push rod passes through the compression spring and extends to the outside of the mounting block, the push rod is slidably connected to the bottom of the mounting block, a connecting block is installed at the bottom of the push rod, and one side of the connecting block is vertically fixedly connected to one side of the protective plate.

[0010] Specifically, the guide mechanism comprises a guide plate, one end of the drilling rig body is detachably mounted with the guide plate, a guide hole is provided at the center of the guide plate, and the connecting pipe is slidably connected to the inside of the guide hole.

[0011] Specifically, a plurality of protection pads distributed in an annular shape are provided inside the guide hole, and the protection pads are of an arc-shaped structure. A plurality of through grooves distributed in an annular shape are provided on the guide plate, and the through grooves are of an arc-shaped structure.

[0012] Specifically, the cleaning mechanism includes a fixed block, and a plurality of fixed blocks distributed in a ring are fixedly connected to the bottom of the guide plate. The plurality of fixed blocks are connected by an arc-shaped conduit, one side of one of the fixed blocks is connected to a water inlet pipe, and nozzles are respectively provided on opposite sides of the plurality of fixed blocks.

[0013] Specifically, the cross-sections of the plurality of fixing blocks are triangular structures, and one ends of the plurality of nozzles extend to the bottom of the guide holes respectively.

[0014] Specifically, the support mechanism includes a pressure plate, and a pressure plate is installed at the bottom of one end of the drilling rig body. A plurality of plug rods are vertically connected to the bottom of the pressure plate, and the bottom of the plug rods is a conical structure.

[0015] Specifically, a baffle is vertically connected to one side of the pressure plate, the baffle is an arc-shaped structure, one side of the baffle is located outside the connecting tube, and a reinforcement block is installed between the other side of the baffle and the pressure plate, and the reinforcement block is a trapezoidal structure.

[0016] A construction method of a rotary jet grouting slurry mixing device comprises the following steps:

[0017] S1: First, the drilling rig body is controlled to move to the position where a hole needs to be drilled, and the outer side of the drilling rig body is supported and stabilized. At the same time, the drilling rig body drives the supporting mechanism and the ground to support stability.

[0018] S2: Then the drilling rig body controls the drilling mechanism to enable the drilling mechanism to drill holes on the ground. During drilling, the protective mechanism can protect the shotcrete mechanism.

[0019] S3: After the drilling is completed, the external booster pump is started to allow the cement slurry to enter the drilling mechanism and be sprayed out through the spraying mechanism. The mortar impacts and breaks the inner wall of the hole. As the drilling mechanism is raised and rotated at a certain speed, the mortar is sprayed into the hole, and the mortar is evenly mixed with sand and gravel.

[0020] S4: When the punching mechanism is lifted, the guide mechanism guides and protects the punching mechanism, and the cleaning mechanism washes away debris from the outer wall of the punching mechanism.

[0021] The beneficial effects of the present invention are:

[0022] (1) The rotary jet grouting slurry mixing device and method described in the present invention realizes the ground drilling work through the cooperation of the drilling mechanism and the supporting mechanism, and the rotary jet mortar is sprayed in the hole after drilling to reinforce the ground.

[0023] (2) The rotary jet grouting slurry mixing device and method described in the present invention can help increase the pressure of mortar spraying through the installation of a spraying mechanism, thereby achieving a better mortar spraying effect. At the same time, it can seal the inside of the drilling mechanism to prevent the mortar from solidifying easily.

[0024] (3) The rotary jet grouting slurry mixing device and method described in the present invention, through the coordinated installation of the protective mechanism, is conducive to shielding and protecting one side of the spraying mechanism to prevent sand and gravel from clogging and making it impossible to spray. The spraying mechanism is driven to make the protective mechanism slide to achieve the spraying work.

[0025] (4) The rotary jet grouting slurry mixing device and method described in the present invention facilitates guiding the punching mechanism through the installation of a guide mechanism, and facilitates flushing the outside of the punching mechanism through the installation of a cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0028] Figure 2 It is a schematic diagram of the connection structure between the connecting pipe and the guide plate of the present invention;

[0029] Figure 3 It is a schematic diagram of the connection structure between the drill bit and the connecting pipe of the present invention;

[0030] Figure 4 It is a schematic diagram of the connection structure between the protective plate and the mounting block of the present invention;

[0031] Figure 5 It is a schematic diagram of the connection structure between the leather plug and the mounting block of the present invention;

[0032] Figure 6 It is a schematic diagram of the connection structure between the fixing block and the guide plate of the present invention;

[0033] Figure 7 It is a schematic diagram of the connection structure between the catheter and the fixing block of the present invention;

[0034] Figure 8 It is a schematic diagram of the connection structure between the baffle and the pressure plate of the present invention.

[0035] In the figure: 1. drilling rig body; 2. punching mechanism; 201. connecting pipe; 202. drill bit; 203. controller; 204. drive assembly; 205. delivery pipe; 3. protection mechanism; 301. protection plate; 302. slide groove; 303. push rod; 304. connection block; 4. spraying mechanism; 401. mounting groove; 402. mounting block; 403. connecting pipe; 404. guide groove; 405. leather plug; 406. spray hole; 407. compression spring; 5. guide mechanism; 501. guide plate; 502. guide hole; 503. through groove; 504. protection pad; 6. cleaning mechanism; 601. fixing block; 602. nozzle; 603. guide tube; 604. water inlet pipe; 7. supporting mechanism; 701. pressing plate; 702. plug; 703. baffle; 704. reinforcement block. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, a rotary jet grouting slurry mixing device described in the present invention includes a drilling rig body 1, a drilling rig body 1 is equipped with a drilling mechanism 2, a spraying mechanism 4 is installed on the drilling mechanism 2, a protective mechanism 3 is installed on the spraying mechanism 4, a guide mechanism 5 is installed at one end of the drilling rig body 1, a cleaning mechanism 6 is installed on the guide mechanism 5, and a supporting mechanism 7 is installed at the bottom of one end of the drilling rig body 1.

[0038] Specifically, Figure 1 , Figure 2 and Figure 3As shown, the drilling mechanism 2 includes a driving component 204, one end of the drilling rig body 1 is cooperatively connected with the driving component 204, the bottom of the driving component 204 is rotatably connected with a connecting pipe 201, the bottom of the connecting pipe 201 is installed with a drill bit 202, the top of the driving component 204 is installed with a controller 203, one side of the driving component 204 is installed with a delivery pipe 205, one end of the delivery pipe 205 is connected to one side of the connecting pipe 201, and the other end of the delivery pipe 205 is connected to a pressure pump, through the installation of the driving component 204, it is convenient to connect the connecting pipe 201, and through the control of the controller 203, the driving component 204 is driven to rotate downward to achieve the drilling work on the ground, and through the connection of the delivery pipe 205, the mortar can enter the inside of the connecting pipe 201, and the connecting pipe 201 is rotated and lifted at a certain speed to achieve the mortar spraying out through the side wall of the drill bit 202, so that the mortar and sand and gravel are evenly mixed, making the ground more solid.

[0039] Specifically, Figure 3 , Figure 4 and Figure 5 As shown, the spraying mechanism 4 includes a mounting groove 401, and a symmetrical mounting groove 401 is provided on the outer wall of the drill bit 202. A mounting block 402 is detachably connected inside the mounting groove 401, and a guide groove 404 and a spray hole 406 are provided inside the mounting block 402. The spray hole 406 is vertically connected to the guide groove 404, and the spray hole 406 extends to the outside of the mounting block 402. A mounting pipe 403 is connected to the top of the mounting block 402, and the mounting pipe 403 is located at the top of the guide groove 404. The opening of the mounting groove 401 facilitates the connection of the mounting block 402. Through the installation of the connecting pipe 201, the mortar can enter the guide groove 404 and be sprayed out from the spray hole 406 through the guide groove 404. The drill bit 202 is rotated and lifted at a certain speed to realize the rotary spraying work of the underground, and the mortar is evenly mixed with sand and gravel.

[0040] Specifically, Figure 5 As shown, a leather plug 405 is provided inside the guide groove 404, and the leather plug 405 is slidably connected to the inside of the guide groove 404 through a compression spring 407. The leather plug 405 is located at one end of the spray hole 406. Through the resistance of the compression spring 407, the leather plug 405 blocks the spray hole 406, so that the mortar inside the guide groove 404 will not flow out through the spray hole 406. When the mortar pressure reaches a certain level, the leather plug 405 is squeezed and contracted to realize the mortar spraying, which also plays a role of instantaneous pressurization and at the same time plays a sealing role, so that the mortar inside the guide groove 404 is not easy to dry and condense.

[0041] Specifically, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the protection mechanism 3 includes a slide groove 302, and the outer wall of the drill bit 202 is provided with two symmetrically distributed slide grooves 302, the slide groove 302 is connected to the mounting groove 401, the slide groove 302 is located at the bottom of the mounting groove 401, the slide groove 302 is slidably connected with a protection plate 301 inside, the protection plate 301 is slidably connected to the outer side of the mounting block 402, the spray hole 406 is located on one side of the protection plate 301, and a push rod 303 is installed at the bottom of the leather plug 405, the push rod 303 runs through the compression spring 407 and extends to the outside of the mounting block 402, the push rod 303 is slidably connected to the bottom of the mounting block 402, and the push rod A connecting block 304 is installed at the bottom of 303, and one side of the connecting block 304 is vertically fixedly connected to one side of the protective plate 301. The opening of the slide groove 302 facilitates the sliding connection of the protective plate 301. The leather plug 405 pulls the top rod 303 to make the protective plate 301 block the spray hole 406, so that the external sand and gravel will not block and jam the spray hole 406. When the mortar is sprayed out, the leather plug 405 is squeezed and slides down, and the leather plug 405 drives the top rod 303 to control the protective plate 301. The protective plate 301 is pulled down to open the spray hole 406, so that the mortar can be sprayed out conveniently.

[0042] Specifically, Figure 1 , Figure 2 and Figure 6 As shown, the guide mechanism 5 includes a guide plate 501. The guide plate 501 is detachably installed at one end of the drilling rig body 1. A guide hole 502 is provided at the center of the guide plate 501. The connecting pipe 201 is slidably connected to the inside of the guide hole 502. The installation of the guide plate 501 facilitates the opening of the guide hole 502, so that the connecting pipe 201 is located at the center of the guide hole 502, which plays a role in guiding and protecting the connecting pipe 201 and preventing the connecting pipe 201 from swinging greatly.

[0043] Specifically, Figure 6 As shown, a plurality of protective pads 504 distributed in an annular shape are provided inside the guide hole 502, and the protective pads 504 are of an arc-shaped structure. A plurality of through grooves 503 distributed in an annular shape are provided on the guide plate 501, and the through grooves 503 are of an arc-shaped structure. The installation of a plurality of the protective pads 504 is beneficial to the anti-collision effect on the connecting pipe 201, and the opening of the through grooves 503 reduces the weight of the guide plate 501, and at the same time facilitates the falling of sand and gravel and will not accumulate on the top of the guide plate 501.

[0044] Specifically, Figure 6 and Figure 7As shown, the cleaning mechanism 6 includes a fixed block 601, and a plurality of annularly distributed fixed blocks 601 are fixedly connected to the bottom of the guide plate 501. The plurality of fixed blocks 601 are connected by an arc-shaped conduit 603, and a water inlet pipe 604 is connected to one side of one of the fixed blocks 601. Spray heads 602 are respectively arranged on opposite sides of the plurality of fixed blocks 601. The plurality of spray heads 602 are connected by installing the plurality of fixed blocks 601, and the plurality of conduits 603 are connected by installing the plurality of fixed blocks 601. The plurality of fixed blocks 601 are connected by the water inlet pipe 604 to an external pipeline, so that external water enters the water inlet pipe 604 and the conduit 603 through the control of the solenoid valve, and the water enters the plurality of fixed blocks 601 and is sprayed out through the spray heads 602, so as to spray water on the outside of the connecting pipe 201 inside the guide hole 502, thereby flushing the outside of the connecting pipe 201.

[0045] Specifically, Figure 7 As shown, the cross-section of the plurality of fixed blocks 601 is a triangular structure, and one end of the plurality of nozzles 602 respectively extends to the bottom of the guide hole 502. Through the design of the triangular structure of the fixed block 601, the nozzle 602 sprays water downward at a certain angle, so that the debris on the connecting pipe 201 can be better rinsed and cleaned.

[0046] Specifically, Figure 2 and Figure 8 As shown, the support mechanism 7 includes a pressure plate 701, and a pressure plate 701 is installed at the bottom of one end of the drilling rig body 1. A plurality of insertion rods 702 are vertically connected to the bottom of the pressure plate 701. The bottom of the insertion rod 702 is a conical structure. Through the installation of the pressure plate 701, the contact area with the ground is increased, so that one end of the drilling rig body 1 is stably attached to the ground. Through the installation of a plurality of the insertion rods 702, the pressure plate 701 is stably and firmly attached to the ground and is not easy to slide.

[0047] Specifically, Figure 2 and Figure 8 As shown, a baffle 703 is vertically connected to one side of the pressure plate 701, and the baffle 703 is an arc-shaped structure. One side of the baffle 703 is located on the outside of the connecting pipe 201, and a reinforcing block 704 is installed between the other side of the baffle 703 and the pressure plate 701. The reinforcing block 704 is a trapezoidal structure. Through the installation of the baffle 703, it is beneficial to shield one side of the bottom of the connecting pipe 201, so that the debris thrown out when the connecting pipe 201 rotates will not cause wear to the drilling rig body 1. Through the installation of the reinforcing block 704, the baffle 703 is stably installed and will not be deformed.

[0048] A construction method of a rotary jet grouting slurry mixing device comprises the following steps:

[0049] S1: First, the drilling rig body 1 is controlled to move to the position where drilling is required, and the outer side of the drilling rig body 1 is supported and stabilized. At the same time, the drilling rig body 1 drives the supporting mechanism 7 and the ground to support and stabilize.

[0050] S2: Then the drilling rig body 1 controls the punching mechanism 2 to enable the punching mechanism 2 to punch holes on the ground. During the drilling, the protection mechanism 3 can protect the shotcrete mechanism 4.

[0051] S3: After the drilling is completed, the external booster pump is started to allow the cement slurry to enter the inside of the drilling mechanism 2 and be sprayed out through the spraying mechanism 4. The mortar impacts and breaks the inner wall of the hole. As the drilling mechanism 2 is lifted and rotated at a certain speed, the mortar is sprayed into the inside of the hole.

[0052] S4: When the punching mechanism 2 is lifted, the guide mechanism 5 guides and protects the punching mechanism 2 , and the cleaning mechanism 6 flushes debris from the outer wall of the punching mechanism 2 .

[0053] When the present invention is in use, firstly, the drive assembly 204 is installed to facilitate the connection with the connecting pipe 201, and the controller 203 is controlled to drive the drive assembly 204 to drive the downward rotation to achieve the ground drilling work, and the mortar can enter the connecting pipe 201 through the connection of the delivery pipe 205, and the connecting pipe 201 is rotated and lifted at a certain speed to achieve the mortar spraying through the side wall of the drill bit 202, so as to achieve the rotary spraying pouring work, and the mortar is evenly mixed with sand and gravel, making the ground more solid, and the installation of the pressing plate 701 increases the contact area with the ground, so that one end of the drilling rig body 1 is stably attached to the ground, and the installation of multiple plug rods 702 makes the pressing plate 701 stable and firm to the ground and not easy to slide, and the installation of the baffle plate 703 is beneficial The bottom side of the connecting pipe 201 is shielded so that the debris thrown out when the connecting pipe 201 rotates will not cause wear to the drilling rig body 1. The installation of the reinforcing block 704 makes the baffle 703 stable and will not be deformed. The opening of the mounting groove 401 is conducive to the connection of the mounting block 402. The installation of the mounting pipe 403 allows the mortar to enter the guide groove 404 and be sprayed out from the spray hole 406 through the guide groove 404. The drill bit 202 is rotated and lifted at a certain speed to achieve uniform mixing of the mortar and sand and gravel. The resistance of the compression spring 407 makes the plug 405 block the spray hole 406, so that the mortar in the guide groove 404 will not flow out through the spray hole 406. When the mortar pressure reaches a certain level, the plug 405 is squeezed and contracted to achieve mortar spraying. The mortar inside the guide groove 404 is not easy to dry and condense. The opening of the slide groove 302 is conducive to the sliding connection of the protective plate 301. The pull of the top rod 303 by the leather plug 405 blocks the spray hole 406 of the protective plate 301, so that the external sand and gravel will not block and jam the spray hole 406. When the mortar is sprayed out, the leather plug 405 is squeezed and slides down. The leather plug 405 drives the top rod 303 to control the protective plate 301. The protective plate 301 is pulled down to open the spray hole 406, so that the mortar can be sprayed out conveniently. The installation of the guide plate 501 is conducive to the opening of the guide hole 502, so that the connecting pipe 201 is located at the center of the guide hole 502, which plays a role in guiding and protecting the connecting pipe 201, preventing the connecting pipe from 201 swings greatly, and the installation of multiple protective pads 504 is beneficial to the anti-collision effect of the connecting pipe 201, and the opening of the through groove 503 makes the weight of the guide plate 501 lighter, and at the same time, it is convenient for sand and debris to fall and not accumulate on the top of the guide plate 501. Through the installation of multiple fixed blocks 601, multiple nozzles 602 are connected, and through the installation of multiple conduits 603, multiple fixed blocks 601 are connected. Through the water inlet pipe 604, it is connected with the external pipeline, so that external water enters the water inlet pipe 604 and the conduit 603 through the control of the solenoid valve, and the water enters the multiple fixed blocks 601 and is sprayed out through the nozzle 602, which is beneficial to spray water on the outside of the connecting pipe 201 inside the guide hole 502, so as to realize the flushing work on the outside of the connecting pipe 201.The triangular structure of the fixing block 601 is designed so that the nozzle 602 sprays water downward at a certain angle, thereby making it easier to wash and clean the debris on the connecting pipe 201.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rotary jet grouting slurry mixing device, characterized in that: The drilling rig comprises a drilling rig body (1), a drilling rig body (1) is provided with a punching mechanism (2), a shotcreting mechanism (4) is provided with the drilling rig (2), a protection mechanism (3) is provided with the shotcreting mechanism (4), a guide mechanism (5) is provided with one end of the drilling rig body (1), a cleaning mechanism (6) is provided with the guide mechanism (5), and a support mechanism (7) is provided with the bottom of one end of the drilling rig body (1); The drilling mechanism (2) comprises a driving assembly (204), one end of the drilling rig body (1) is cooperatively connected to the driving assembly (204), the bottom of the driving assembly (204) is rotatably connected to a connecting pipe (201), a drill bit (202) is installed at the bottom of the connecting pipe (201), a controller (203) is installed at the top of the driving assembly (204), a conveying pipe (205) is installed at one side of the driving assembly (204), and one end of the conveying pipe (205) is connected to one side of the connecting pipe (201); The spraying mechanism (4) comprises a mounting groove (401), the outer wall of the drill bit (202) is provided with a symmetrical mounting groove (401), a mounting block (402) is detachably connected inside the mounting groove (401), a guide groove (404) and a spray hole (406) are provided inside the mounting block (402), the spray hole (406) is vertically connected to the guide groove (404), the spray hole (406) extends to the outside of the mounting block (402), a mounting tube (403) is connected to the top of the mounting block (402), the mounting tube (403) is located at the top of the guide groove (404), a leather plug (405) is provided inside the guide groove (404), the leather plug (405) is slidably connected to the inside of the guide groove (404) through a compression spring (407), and the leather plug (405) is located at one end of the spray hole (406).

2. A rotary jet grouting slurry mixing device according to claim 1, characterized in that: The protection mechanism (3) comprises a slide groove (302). The outer wall of the drill bit (202) is provided with two symmetrically distributed slide grooves (302). The slide groove (302) is connected to the mounting groove (401). The slide groove (302) is located at the bottom of the mounting groove (401). A protection plate (301) is slidably connected inside the slide groove (302). The protection plate (301) is slidably connected to the outer side of the mounting block (402). The spray hole (406) is located on one side of the protection plate (301). A push rod (303) is installed at the bottom of the leather plug (405). The push rod (303) passes through a compression spring (407) and extends to the outer side of the mounting block (402). The push rod (303) is slidably connected to the bottom of the mounting block (402). A connecting block (304) is installed at the bottom of the push rod (303). One side of the connecting block (304) is vertically fixedly connected to one side of the protection plate (301).

3. A rotary jet grouting slurry mixing device according to claim 1, characterized in that: The guide mechanism (5) comprises a guide plate (501), one end of the drilling rig body (1) is detachably mounted with the guide plate (501), a guide hole (502) is provided at the center of the guide plate (501), and the connecting pipe (201) is slidably connected to the inside of the guide hole (502).

4. A rotary jet grouting slurry mixing device according to claim 3, characterized in that: A plurality of protective pads (504) distributed in an annular shape are arranged inside the guide hole (502), and the protective pads (504) are of an arc-shaped structure. A plurality of through grooves (503) distributed in an annular shape are arranged on the guide plate (501), and the through grooves (503) are of an arc-shaped structure.

5. A rotary jet grouting slurry mixing device according to claim 4, characterized in that: The cleaning mechanism (6) comprises a fixed block (601), a plurality of fixed blocks (601) distributed in an annular shape are fixedly connected to the bottom of the guide plate (501), the plurality of fixed blocks (601) are connected via an arc-shaped conduit (603), one side of one of the fixed blocks (601) is connected to a water inlet pipe (604), and nozzles (602) are respectively provided on opposite sides of the plurality of fixed blocks (601).

6. A rotary jet grouting slurry mixing device according to claim 5, characterized in that: The cross-sections of the plurality of fixing blocks (601) are triangular structures, and one end of the plurality of nozzles (602) respectively extends to the bottom of the guide hole (502).

7. A rotary jet grouting slurry mixing device according to claim 1, characterized in that: The support mechanism (7) comprises a pressure plate (701), and a pressure plate (701) is installed at the bottom of one end of the drilling rig body (1). A plurality of insertion rods (702) are vertically connected to the bottom of the pressure plate (701), and the bottom of the insertion rods (702) is a conical structure.

8. A rotary jet grouting slurry mixing device according to claim 7, characterized in that: One side of the pressure plate (701) is vertically connected to a baffle (703), the baffle (703) is an arc-shaped structure, and one side of the baffle (703) is located outside the connecting pipe (201).

9. A rotary jet grouting slurry mixing device according to claim 8, characterized in that: A reinforcement block (704) is installed between the other side of the baffle (703) and the pressure plate (701), and the reinforcement block (704) is a trapezoidal structure.

10. A construction method of a rotary jet grouting slurry mixing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, the drilling rig body (1) is controlled to move to the position where a hole needs to be drilled, and the outer side of the drilling rig body (1) is supported and stabilized. At the same time, the drilling rig body (1) drives the supporting mechanism (7) and the ground to support and stabilize. S2: The drilling rig body (1) then controls the drilling mechanism (2) to enable the drilling mechanism (2) to perform drilling work on the ground. During the drilling, the protection mechanism (3) can protect the spraying mechanism (4). S3: After the drilling is completed, the external booster pump is started to allow cement slurry to enter the drilling mechanism (2) and be sprayed out through the spraying mechanism (4). The mortar impacts and breaks the inner wall of the hole. As the drilling mechanism (2) is raised and rotated at a certain speed, the mortar is sprayed into the inside of the hole, and the mortar is evenly mixed with the sand and gravel. S4: When the punching mechanism (2) is lifted, the guide mechanism (5) guides and protects the punching mechanism (2), and the cleaning mechanism (6) washes away debris from the outer wall of the punching mechanism (2).

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