A high-pressure jet grouting pile grouting pipe plugging device

Abstract

This invention discloses a high-pressure jet grouting pile grouting pipe sealing device, relating to the field of jet grouting pile technology. It includes a grouting pipe sealing unit, a grout storage driving unit, and a grout discharge unit. The grouting pipe sealing unit comprises a jet grouting pipe, a sealing plate disposed around the periphery of the jet grouting pipe, a buffer protection plate disposed below the sealing plate, and a first spring disposed on the upper surface of the buffer protection plate. By setting up the grouting pipe sealing unit, the grouting fluid in the pilot hole is sealed, and the damage to the sealing plate during prolonged sealing of the grouting fluid is reduced. By setting up the grout storage driving unit, the sealing strength of the sealing plate is improved, and the damage to the sealing plate during prolonged sealing of the grouting fluid is further reduced. By setting up the grout discharge unit, the stability of the device is increased.

Description

Technical Field

[0001] This invention relates to the technical field of jet grouting piles, and more particularly to a sealing device for the grouting pipe of a high-pressure jet grouting pile. Background Technology

[0002] High-pressure jet grouting is a type of jet grouting method. It involves inserting a grouting pipe with a special nozzle into the designed soil depth, then injecting cement mortar at high pressure through the nozzle, impacting and cutting the soil. Under the powerful force of the high-pressure jet, the soil undergoes strength failure, and soil particles detach from the soil layer, mixing with the cement grout to form a slurry. Some fine particles emerge to the surface with the slurry, while the remaining soil particles, under the influence of the jet's impact force, centrifugal force, and gravity, rearrange themselves systematically according to the slurry-to-soil ratio and mass. This continuous jet grouting from the lower chamber, after solidification, forms a consolidated body with a certain strength within the soil layer.

[0003] In practical applications, it is necessary to form a pilot hole before grouting. After the pilot hole is formed, the grouting pipe is inserted into the pilot hole. Then, the grouting pipe rotates and sprays high-speed cement grout. The cement grout cuts the surrounding soil. The grouting pipe rotates and rises, forming a columnar solidified body in the soil.

[0004] Existing patent CN202120467502.0 discloses a high-pressure jet grouting pile grouting pipe sealing structure, including a pilot hole and a grouting pipe passing through the pilot hole. A sealing mechanism for sealing the grouting fluid is connected to the periphery of the grouting pipe. The sealing mechanism includes two fixed plates connected to the periphery of the grouting pipe, multiple connecting components disposed on the fixed plates for abutting against the sidewall of the pilot hole, and a driving component disposed on the fixed plates for driving the connecting components to move radially along the fixed plates. The connecting components include an arc-shaped connecting pipe disposed within the fixed plates, a first fixed block disposed within the arc-shaped connecting pipe, two moving rods passing through the arc-shaped connecting pipe, and two springs disposed within the arc-shaped connecting pipe. The two connecting rods are located at both ends of the first fixed block. One end of each spring is fixedly connected to one end of a moving rod, and the other end of each spring is fixedly connected to one end face of the first fixed block. The bottom surface of the arc-shaped connecting pipe is slidably connected to the top surface of the fixed plate.

[0005] However, the sealing mechanism in the above-disclosed jet grouting pipe sealing structure is prone to damage during long-term use. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] In view of the problem that the sealing mechanism in the existing jet grouting pipe sealing structure is prone to damage during long-term use, the present invention is proposed.

[0008] Therefore, the purpose of this invention is to provide a high-pressure jet grouting pile grouting pipe sealing device.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-pressure jet grouting pile grouting pipe sealing device, comprising a grouting pipe sealing unit, a grout storage driving unit, and a grout discharge unit. The grouting pipe sealing unit includes a jet grouting pile grouting pipe, a sealing plate disposed around the periphery of the jet grouting pile grouting pipe, a buffer protection plate disposed below the sealing plate, and a first spring disposed on the upper surface of the buffer protection plate. The grout storage driving unit includes a grout storage mechanism disposed on the sealing plate, a driving mechanism disposed on the buffer protection plate, a supporting lifting plate disposed on the upper surface of the sealing plate, and a second spring disposed on the upper surface of the sealing plate. The grout discharge unit includes a linkage rod disposed on the upper surface of the buffer protection plate, a grout discharge pipe disposed on the grout storage mechanism, a grout discharge opening and closing mechanism disposed on the grout discharge pipe, and an opening and closing driving mechanism disposed on the grout discharge opening and closing mechanism.

[0010] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the grout storage mechanism includes a first grout delivery pipe disposed on the sealing plate, a second grout delivery pipe disposed on the first grout delivery pipe, a grout storage tank disposed on the upper surface of the support lifting plate, and a grout inlet disposed on the second grout delivery pipe.

[0011] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the driving mechanism includes a vertical lifting rod disposed on the upper surface of the buffer protection plate, a connecting plate disposed on the top of the vertical lifting rod, and an opening and closing lifting rod disposed on the lower surface of the connecting plate.

[0012] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the grout discharge opening and closing mechanism includes a self-locking drive assembly disposed on the top of the grout discharge pipe, and an opening and closing plate mechanism disposed on the self-locking drive assembly.

[0013] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the self-locking drive assembly includes a fixed rod disposed on the top of the grout discharge pipe, a positioning groove opened on the top of the fixed rod, a slider disposed in the positioning groove, and a third spring disposed in the positioning groove.

[0014] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the opening and closing plate mechanism includes a horizontal connecting plate disposed on one side of the slider, and an opening and closing plate disposed at one end of the horizontal connecting plate.

[0015] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the opening and closing drive mechanism includes a first movable connecting rod disposed above the linkage rod, a second movable connecting rod disposed at both ends of the first movable connecting rod, and a fixing plate disposed at one end of the second movable connecting rod.

[0016] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the bottom of the first grout delivery pipe movably penetrates the buffer protection plate, and one end of the second grout delivery pipe movably penetrates the top of the grout storage tank and extends into the grout storage tank.

[0017] In a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the vertical lifting rod movably penetrates the sealing plate and the vertical lifting rod movably penetrates the supporting lifting plate.

[0018] As a preferred embodiment of the high-pressure jet grouting pile grouting pipe sealing device of the present invention, the bottom of the opening and closing lifting rod slides inside the first grout delivery pipe, and the slider slides inside the positioning groove.

[0019] The beneficial effects of this invention are as follows: by setting up the grouting pipe sealing unit, the grouting fluid in the pilot hole is sealed, and the damage to the sealing plate during long-term sealing of the grouting fluid is reduced; by setting up the grout storage driving unit, the sealing strength of the sealing plate is improved, and the damage to the sealing plate during long-term sealing of the grouting fluid is further reduced; by setting up the grout discharge unit, the stability of the device is increased. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a high-pressure jet grouting pile grouting pipe sealing device in Embodiment 1 of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of a high-pressure jet grouting pile grouting pipe sealing device in Embodiment 2 of the present invention.

[0023] Figure 3 This is a front view structural schematic diagram of a high-pressure jet grouting pile grouting pipe sealing device according to Embodiment 2 of the present invention.

[0024] Figure 4 This is a schematic diagram of the connection between the slurry storage mechanism and the opening / closing lifting rod in Embodiment 2 of the present invention.

[0025] Figure 5 For the purposes of this statement Figure 4 Enlarged schematic diagram of part A in the middle.

[0026] Figure 6 This is a schematic diagram of the structure of a high-pressure jet grouting pile grouting pipe sealing device in Embodiment 3 of the present invention.

[0027] Figure 7 For the purposes of this statement Figure 6 Enlarged schematic diagram of part B in the middle section. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1

[0033] Reference Figure 1A schematic diagram of the overall structure of a high-pressure jet grouting pile grouting pipe sealing device is provided. The high-pressure jet grouting pile grouting pipe sealing device includes a grouting pipe sealing unit 100. The grouting pipe sealing unit 100 includes a jet grouting pile grouting pipe 101, a sealing plate 102 disposed around the jet grouting pile grouting pipe 101, a buffer protection plate 103 disposed under the sealing plate 102, and a first spring 104 disposed on the upper surface of the buffer protection plate 103.

[0034] A pilot hole 401, which is a circular hole, is provided on the ground surface 400. A sealing plate 102 is a circular annular plate with a central through-hole. The jet grouting pipe 101 passes through the central through-hole of the sealing plate 102, and the sealing plate 102 is fixedly fitted onto the annular side of the jet grouting pipe 101. A buffer protection plate 103 is also a circular annular plate with a central through-hole. The jet grouting pipe 101 passes through the central through-hole of the buffer protection plate 103, and the buffer protection plate 103 is movably fitted onto the annular side of the jet grouting pipe 101. The diameter of the sealing plate 102 is larger than the diameter of the pilot hole 401, and the sealing plate 102 can seal the top opening of the pilot hole 401, ensuring the sealing of the pilot hole 401 and preventing grout from spraying out.

[0035] The diameter of the buffer protection plate 103 is smaller than the diameter of the hole 401, allowing the buffer protection plate 103 to move up and down within the hole 401. Two first springs 104 are symmetrically arranged between the sealing plate 102 and the buffer protection plate 103. The upper end of the first spring 104 is fixedly connected to the lower surface of the sealing plate 102, and the lower end of the first spring 104 is fixedly connected to the upper surface of the buffer protection plate 103.

[0036] Operation process: The jet grouting pipe 101 is inserted into the pilot hole 401. The top opening of the pilot hole 401 is sealed by the sealing plate 102 through bolts and other fixing components, thereby sealing the grouting fluid in the pilot hole 401. The jet grouting pipe 101 begins to inject grout into the pilot hole 401. Due to the high grouting pressure in the pilot hole 401, the grouting fluid will impact the buffer protection plate 103 upwards and compress the first spring 104. The first spring 104 can offset a certain upward impact force of the grouting fluid. The buffer protection plate 103 and the first spring 104 work together to protect the sealing plate 102 and reduce the degree of damage to the sealing plate 102 when sealing the grouting fluid for a long time.

[0037] Example 2

[0038] Reference Figure 1 and Figure 2-5This embodiment differs from the first embodiment in that: a high-pressure jet grouting pile grouting pipe sealing device further includes a grout storage drive unit 200, which includes a grout storage mechanism 201 disposed on the sealing plate 102, a drive mechanism 202 disposed on the buffer protection plate 103, a support lifting plate 203 disposed on the upper side of the sealing plate 102, and a second spring 204 disposed on the upper surface of the sealing plate 102.

[0039] The jet grouting pipe 101 movably passes through the middle of the supporting lifting plate 203, and the supporting lifting plate 203 is movably connected to the jet grouting pipe 101. Two second springs 204 are symmetrically arranged. The upper end of the second spring 204 is fixedly connected to the lower surface of the supporting lifting plate 203, and the lower end of the second spring 204 is fixedly connected to the upper surface of the sealing plate 102.

[0040] Specifically, the slurry storage mechanism 201 includes a first slurry delivery pipe 201a disposed on the sealing plate 102, a second slurry delivery pipe 201b disposed on the first slurry delivery pipe 201a, a slurry storage box 201c disposed on the upper surface of the supporting lifting plate 203, and a slurry inlet 201d disposed on the second slurry delivery pipe 201b.

[0041] Furthermore, two first grout delivery pipes 201a are symmetrically arranged, and the first grout delivery pipes 201a are vertically arranged. The first grout delivery pipes 201a pass through the sealing plate 102 and are fixedly connected to the sealing plate 102. The first grout delivery pipes 201a movably pass through the buffer protection plate 103 and are movably connected to the buffer protection plate 103.

[0042] Furthermore, two second grout delivery pipes 201b are symmetrically arranged. One end of the second grout delivery pipe 201b is interconnected with the first grout delivery pipe 201a, and the grout inlet 201d is located at the connection between the first grout delivery pipe 201a and the second grout delivery pipe 201b. The other end of the second grout delivery pipe 201b movably passes through the top of the grout storage tank 201c and can move up and down within the grout storage tank 201c. The second grout delivery pipe 201b is long enough that its other end will not move out of the grout storage tank 201c.

[0043] Furthermore, two drive mechanisms 202 are symmetrically arranged. Each drive mechanism 202 includes a vertical lifting rod 202a disposed on the upper surface of the buffer protection plate 103, a connecting plate 202b disposed on the top of the vertical lifting rod 202a, and an opening and closing lifting rod 202c disposed on the lower surface of the connecting plate 202b. The bottom of the vertical lifting rod 202a is fixedly connected to the upper surface of the buffer protection plate 103. The vertical lifting rod 202a movably passes through the sealing plate 102 and is movably connected to the sealing plate 102. The vertical lifting rod 202a movably passes through the supporting lifting plate 203 and is movably connected to the supporting lifting plate 203.

[0044] One end of the connecting plate 202b is fixedly connected to the top of the vertical lifting rod 202a, and the other end of the connecting plate 202b is fixedly connected to the top of the opening and closing lifting rod 202c; the bottom of the opening and closing lifting rod 202c slides inside the first slurry pipe 201a, and the opening and closing lifting rod 202c is long enough so that the bottom of the opening and closing lifting rod 202c will not slide out from the top opening of the first slurry pipe 201a.

[0045] When the buffer protection plate 103 does not move upward in the pilot hole 401, the lower part of the opening and closing lifting rod 202c blocks the grout passage 201d in the first grout delivery pipe 201a, preventing the first grout delivery pipe 201a and the second grout delivery pipe 201b from communicating with each other. When the buffer protection plate 103 moves upward in the pilot hole 401 by a distance twice the height of the grout passage 201d, the buffer protection plate 103 will drive the opening and closing lifting rod 202c to move upward, causing the lower part of the opening and closing lifting rod 202c to move completely above the grout passage 201d, fully opening the grout passage 201d and connecting the first grout delivery pipe 201a and the second grout delivery pipe 201b.

[0046] Operation process: The jet grouting pipe 101 is inserted into the pilot hole 401. The top opening of the pilot hole 401 is sealed by the sealing plate 102 using bolts and other fixing components, thus sealing the grouting fluid in the pilot hole 401. Grouting begins in the pilot hole 401 via the jet grouting pipe 101. Due to the high grouting pressure in the pilot hole 401, the grouting fluid impacts the buffer protection plate 103 upwards, compressing the first spring 104. The first spring 104 counteracts the upward impact of the grouting fluid. A certain impact force is applied, and the buffer protection plate 103 and the first spring 104 work together to protect the sealing plate 102, reducing the damage to the sealing plate 102 when sealing the grout for a long time. The grout will impact the buffer protection plate 103 upward, causing the buffer protection plate 103 to move upward in the pilot hole 401. The buffer protection plate 103 drives the vertical lifting rod 202a to move upward, and the vertical lifting rod 202a drives the opening and closing lifting rod 202c to move upward through the connecting plate 202b.

[0047] When the buffer protection plate 103 moves upward in the pilot hole 401 by a distance twice the height of the grouting port 201d, the grouting port 201d is fully opened. The grouting fluid in the pilot hole 401 flows into the grouting tank 201c for storage through the first grouting pipe 201a, the grouting port 201d, and the second grouting pipe 201b, further reducing the upward impact force of the grouting fluid and further reducing the damage to the sealing plate 102 when sealing the grouting fluid for a long time. As more and more grouting fluid flows into the grouting tank 201c from the pilot hole 401, the grouting tank 201c will drive the support lifting plate 203 to move downward, thereby compressing the second spring 204. The tension of the second spring 204 will press down on the sealing plate 102, increasing the sealing strength of the sealing plate 102.

[0048] Example 3

[0049] Reference Figure 1 and Figure 6-7 This embodiment differs from the first embodiment in that: a high-pressure jet grouting pile grouting pipe sealing device further includes a grout discharge unit 300. The grout discharge unit 300 includes a linkage rod 301 disposed on the upper surface of the buffer protection plate 103, a grout discharge pipe 302 disposed on the grout storage mechanism 201, a grout discharge opening and closing mechanism 303 disposed on the grout discharge pipe 302, and an opening and closing drive mechanism 304 disposed on the grout discharge opening and closing mechanism 303. Two linkage rods 301 are symmetrically arranged. The linkage rods 301 penetrate the sealing plate 102 and are movably connected to the sealing plate 102. The bottom of the linkage rods 301 is fixedly connected to the upper surface of the buffer protection plate 103.

[0050] Two slurry discharge pipes 302 are symmetrically arranged. One end of the slurry discharge pipe 302 is connected to the interior of the slurry storage tank 201c. The connection between the slurry discharge pipe 302 and the slurry storage tank 201c is a sealed and fixed connection.

[0051] Specifically, the slurry discharge opening and closing mechanism 303 includes a self-locking drive assembly 303a disposed on the top of the slurry discharge pipe 302 and an opening and closing plate mechanism 303b disposed on the self-locking drive assembly 303a.

[0052] Furthermore, the self-locking drive assembly 303a includes a fixed rod 303a-1 disposed on the top of the slurry discharge pipe 302, a positioning groove 303a-2 opened on the top of the fixed rod 303a-1, a slider 303a-3 disposed in the positioning groove 303a-2, and a third spring 303a-4 disposed in the positioning groove 303a-2; the bottom of the fixed rod 303a-1 is fixedly connected to the top of the slurry discharge pipe 302, the slider 303a-3 is slidably installed in the positioning groove 303a-2, one end of the third spring 303a-4 is fixedly connected to the slider 303a-3, and the other end of the third spring 303a-4 is fixedly connected to the inner wall of the positioning groove 303a-2.

[0053] Furthermore, the opening and closing plate mechanism 303b includes a horizontal connecting plate 303b-1 disposed on one side of the slider 303a-3 and an opening and closing plate 303b-2 disposed at one end of the horizontal connecting plate 303b-1. One end of the horizontal connecting plate 303b-1 is fixedly connected to the top of the slider 303a-3, and the other end of the horizontal connecting plate 303b-1 is fixedly connected to the top of the opening and closing plate 303b-2; due to the contraction force of the third spring 303a-4, the opening and closing plate 303b-2 tightly seals the port of the slurry discharge pipe 302 away from the slurry storage tank 201c.

[0054] Furthermore, the opening and closing drive mechanism 304 includes a first movable link 304a disposed above the linkage rod 301, second movable links 304b disposed at both ends of the first movable link 304a, and a fixed plate 304c disposed at one end of the second movable link 304b; both ends of the first movable link 304a are hinged to the second movable link 304b, and the end of the second movable link 304b away from the first movable link 304a is hinged to the fixed plate 304c. The bottom of the fixed plate 304c is fixedly connected to the top of the slider 303a-3. The contraction force of the third spring 303a-4 keeps the first movable link 304a and the second movable links 304b at both ends in a straight line.

[0055] Operation process: The jet grouting pipe 101 is inserted into the pilot hole 401. The top opening of the pilot hole 401 is sealed by the sealing plate 102 using bolts and other fixing components. Grouting begins in the pilot hole 401 through the jet grouting pipe 101. Due to the high grouting pressure in the pilot hole 401, the grouting fluid impacts the buffer protection plate 103 upwards, thereby compressing the first spring 104. The first spring 104 can counteract a certain upward impact force of the grouting fluid. The buffer protection plate 103 and the first spring 104 work together to protect the sealing plate 102, reducing the damage to the sealing plate 102 during prolonged sealing of the grouting fluid. The grouting fluid impacts the buffer protection plate 103 upwards, causing the buffer protection plate... 103 moves upward in the pilot hole 401. The buffer protection plate 103 drives the vertical lifting rod 202a to move upward. The vertical lifting rod 202a drives the opening and closing lifting rod 202c to move upward through the connecting plate 202b. When the distance that the buffer protection plate 103 moves upward in the pilot hole 401 is twice the height of the grouting port 201d, the grouting port 201d is fully opened. The grouting liquid in the pilot hole 401 flows into the grouting tank 201c for storage through the first grouting pipe 201a, the grouting port 201d, and the second grouting pipe 201b in sequence. This further reduces the upward impact force of the grouting liquid and further reduces the degree of damage to the sealing plate 102 when sealing the grouting liquid for a long time.

[0056] As more and more grout flows into the grout storage tank 201c from the pilot hole 401, the grout storage tank 201c will drive the supporting lifting plate 203 to move downward, thereby compressing the second spring 204. The tension of the second spring 204 will press down on the sealing plate 102, increasing the sealing strength of the sealing plate 102. When the grout in the grout storage tank 201c exceeds three-quarters of its capacity, the grout storage tank 201c will drive the opening and closing drive mechanism 304 to move downward through the grout discharge pipe 302 and the grout discharge opening and closing mechanism 303, so that the lower surface of the first movable connecting rod 304a contacts the top of the linkage rod 301. If the upward impact force of the grout in the pilot hole 401 causes the buffer protection plate 103 to continue to move upward, the linkage rod 301 will push the first movable connecting rod 304a upward. The first movable connecting rod 304a passes through its two ends. The second movable connecting rod 304b pulls the slider 303a-3 to overcome the contraction force of the third spring 303a-4 and move it within the positioning groove 303a-2. This causes the opening and closing plate 303b-2 to move away from the grout discharge pipe 302, thereby opening one end of the grout discharge pipe 302 away from the grout storage tank 201c. The grout in the grout storage tank 201c can flow out through the grout discharge pipe 302, preventing damage to the grout storage tank 201c due to excessive grout flowing into the grout storage tank 201c from the pilot hole 401. This increases the stability of the device.

[0057] Optionally, a device for collecting grout can be placed on the underside of one end of the grout discharge pipe 302 away from the grout storage tank 201c.

[0058] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0059] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-pressure jet grouting pile grouting pipe sealing device, characterized in that: include, The grouting pipe sealing unit (100) includes a jet grouting pipe (101), a sealing plate (102) disposed around the jet grouting pipe (101), a buffer protection plate (103) disposed on the lower side of the sealing plate (102) and movably sleeved on the annular side of the jet grouting pipe (101), and a first spring (104) whose upper end is fixedly connected to the lower surface of the sealing plate (102) and whose lower end is fixedly connected to the upper surface of the buffer protection plate (103). The slurry storage drive unit (200) includes a slurry storage mechanism (201) fixedly mounted on the sealing plate (102), a drive mechanism (202) mounted on the buffer protection plate (103) and capable of moving up and down with it, a support lifting plate (203) movably sleeved on the jet grouting pipe (101) and located on the upper side of the sealing plate (102), and a second spring (204) whose upper end is fixedly connected to the lower surface of the support lifting plate (203) and whose lower end is fixedly connected to the upper surface of the sealing plate (102); and, The slurry discharge unit (300) includes a linkage rod (301) whose bottom is fixedly connected to the upper surface of the buffer protection plate (103), a slurry discharge pipe (302) disposed on the slurry storage mechanism (201), a slurry discharge opening and closing mechanism (303) disposed on the slurry discharge pipe (302), and an opening and closing drive mechanism (304) disposed on the slurry discharge opening and closing mechanism (303). The slurry storage mechanism (201) includes a first slurry delivery pipe (201a) disposed on the sealing plate (102), a second slurry delivery pipe (201b) disposed on the side wall of the first slurry delivery pipe (201a), a slurry storage tank (201c) disposed on the upper surface of the supporting lifting plate (203), and a slurry inlet (201d) disposed at the connection between the second slurry delivery pipe (201b) and the first slurry delivery pipe (201a). The drive mechanism (202) includes a vertical lifting rod (202a) disposed on the upper surface of the buffer protection plate (103), a connecting plate (202b) disposed on the top of the vertical lifting rod (202a), and an opening and closing lifting rod (202c) disposed on the lower surface of the connecting plate (202b). The slurry discharge opening and closing mechanism (303) includes a self-locking drive assembly (303a) disposed on the top of the slurry discharge pipe (302), and an opening and closing plate mechanism (303b) disposed on the self-locking drive assembly (303a). The self-locking drive assembly (303a) includes a fixed rod (303a-1) disposed on the top of the slurry discharge pipe (302), a positioning groove (303a-2) opened on the top of the fixed rod (303a-1), a slider (303a-3) disposed in the positioning groove (303a-2), and a third spring (303a-4) disposed in the positioning groove (303a-2); one end of the third spring (303a-4) is connected to the slider (303a-3), and the other end is connected to the inner wall of the positioning groove (303a-2); The opening and closing plate mechanism (303b) includes a horizontal connecting plate (303b-1) disposed on one side of the slider (303a-3), and an opening and closing plate (303b-2) disposed at one end of the horizontal connecting plate (303b-1). The opening and closing drive mechanism (304) includes a first movable link (304a) disposed above the linkage rod (301), a second movable link (304b) disposed at both ends of the first movable link (304a), and a fixed plate (304c) hinged to one end of the second movable link (304b); the fixed plate (304c) is also fixedly connected to the slider (303a-3) of the opening and closing plate mechanism (303b); The bottom of the first grout delivery pipe (201a) movably passes through the buffer protection plate (103), and one end of the second grout delivery pipe (201b) movably passes through the top of the grout storage tank (201c) and extends into the grout storage tank (201c); The vertical lifting rod (202a) movably passes through the sealing plate (102), and the vertical lifting rod (202a) movably passes through the supporting lifting plate (203); The bottom of the opening and closing lifting rod (202c) slides within the first slurry pipe (201a), and the slider (303a-3) slides within the positioning groove (303a-2).

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