High-pressure deep hole curtain grouting orifice device

Abstract

The utility model discloses a high-pressure deep hole curtain grouting orifice device, and belongs to the technical field of water conservancy and hydropower engineering. Pre-burying an orifice pipe fitting; an obturator tube; the drill rod piece longitudinally extends into the inner cavity of the pre-buried orifice pipe fitting from the top end of the sealer pipe fitting in an inserted mode, and slurry enters a hole through the drill rod piece and flows to the bottom of the hole; pressing a cover; the grout outlet pipe opening transversely penetrates through the outer wall of the peripheral side of the lower portion of the sealer pipe fitting and is connected with the top end, extending out of the drill rod piece, of the drill rod piece through a grout outlet anti-blocking assembly, so that the drill rod piece can move up and down without pausing construction in the grouting construction process, and drill holding during long-time construction is avoided; the drill rod piece moves up and down to drive the slurry outlet anti-blocking assembly to ascend and descend synchronously, so that the slurry outlet anti-blocking assembly drives slurry in the slurry outlet pipe opening to be discharged smoothly to prevent blocking. In the grouting process, the drill rod piece can move up and down without pausing construction, and meanwhile it is guaranteed that grout is discharged smoothly.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy and hydropower engineering, in particular to a high-pressure deep hole curtain grouting orifice device. Background Art

[0002] With the continuous development of the current society and the continuous advancement of science and technology, the construction standards of water conservancy and hydropower projects are constantly improving. Among them, key data indicators such as grouting pressure and maximum hole depth are also constantly increasing. This requires that construction equipment needs to be continuously improved and updated, which has important positive significance for social development.

[0003] Grouting construction is a key measure for basic treatment in the construction of water conservancy and hydropower projects. With the development of society, key construction indicators are constantly improving, grouting pressure is constantly increasing, and maximum hole depth is constantly deepening, making the tools used in the past no longer suitable for current high-pressure deep-hole curtain grouting construction.

[0004] Current construction uses higher pressures to spread the slurry over a wider area. Deeper hole sections create a deeper water-blocking curtain in the stratum, blocking deep groundwater, preventing foundation leakage, reducing seepage volume and permeation pressure, and better maintaining foundation strength. This requires more suitable construction equipment for high-pressure deep-hole curtain grouting to avoid in-hole accidents and quality incidents. During long-term continuous operation, using traditional sealers during construction can cause the slurry to gradually solidify at the slurry outlet, forming a blockage. This blockage can seriously affect the slurry discharge efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a high-pressure deep hole curtain grouting orifice device to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-pressure deep hole curtain grouting orifice device, comprising:

[0007] Curtain grouting assembly, used for high-pressure deep-hole curtain grouting construction;

[0008] Pre-buried hole pipe fittings, pre-buried in deep holes;

[0009] The closure fitting is detachably mounted on the top of the embedded orifice fitting by means of a detachable sealing fastener;

[0010] A drill rod is longitudinally inserted from the top of the obturator pipe into the inner cavity of the pre-buried orifice pipe and the slurry enters the hole through the drill rod and flows to the bottom of the hole;

[0011] A gland is tightly pressed against the top end of the inner cavity of the obturator tube and fixed to the obturator tube by screwing a fastener, and the top end of the drill rod extends upward from the gland;

[0012] The slurry outlet pipe outlet passes horizontally through the outer wall of the lower circumference of the sealer pipe and is connected to the top end of the drill rod member through a slurry outlet anti-blocking component, so that the drill rod member can be moved up and down without pausing the construction during the grouting construction, thereby avoiding holding the drill during long-term construction. The up and down movement of the drill rod member drives the slurry outlet anti-blocking component to rise and fall synchronously, so that the slurry outlet anti-blocking component drives the slurry in the slurry outlet pipe outlet to be discharged smoothly to prevent blockage.

[0013] This solution is preferred, and the slurry discharge anti-blocking component includes a clamp fixed to the outer wall of the top end extending from the drill rod, an auxiliary pulley extending and rotatably arranged on the outer wall of the sealer pipe and located above the slurry discharge pipe outlet, a driving rod elastically arranged in the slurry discharge pipe outlet, and a rope with one end fixed to the outer wall of the clamp and the other end wrapped around the outer wall of the auxiliary pulley and extended and fixed to the driving rod.

[0014] Preferably, in this solution, the free end of the slurry outlet is threadedly connected with a detachable end cover, and a fixing ring is integrally cast on the inner wall of one end of the detachable end cover away from the slurry outlet.

[0015] Preferably, a spring member is coaxially arranged in the inner cavity of the detachable end cover, and one end of the spring member elastically abuts against the inner wall of the fixing ring.

[0016] Preferably, the outer wall of one end of the driving rod close to the detachable end cover is symmetrically welded with a limiting rod, the driving rod is coaxially inserted into the detachable end cover and the two limiting rods are pressed against the other end of the spring member.

[0017] Preferably, a pull ring is welded to the free end of the driving rod, and one end of the rope away from the clamp is fixedly connected to the pull ring.

[0018] Preferably, the slurry discharge anti-blocking assembly further comprises two anti-blocking push blades symmetrically welded to the outer wall of the other end of the driving rod.

[0019] Preferably, a support rod seat is welded to the outer wall of the sealer pipe just above the slurry outlet, and a hinge notch is provided at one end of the support rod seat away from the sealer pipe, and the auxiliary pulley is rotatably installed in the hinge notch via a pin shaft.

[0020] Preferably, the detachable sealing fastener includes a closure flange welded to the bottom end of the closure pipe fitting, a pre-buried orifice pipe flange welded to the top end of the pre-buried orifice pipe fitting, and a waterproof rubber gasket arranged between the closure flange and the pre-buried orifice pipe flange, and the pre-buried orifice pipe flange is fastened and sealed together with the closure flange by bolts.

[0021] Preferably, the screw fastener includes a clip symmetrically welded to the outer wall of the top end of the closure tube and a locking bolt longitudinally passing through the top of the pressure cover. The locking bolt is threadedly connected to the clip. A rubber ball holder is provided above the slurry outlet and in the inner cavity of the closure tube. An elastic rubber ball is connected to the top surface of the rubber ball holder, and the elastic rubber ball is located directly below the pressure cover.

[0022] Compared with the prior art, the technical effects and advantages of this utility model are:

[0023] This high-pressure deep-hole curtain grouting orifice device utilizes removable sealing fasteners, including a sealer flange, an embedded orifice pipe flange, and a waterproof rubber gasket. This provides a more reliable seal, effectively blocking flow from the hole to the outside world and enhancing the sealing performance of the entire system. This is particularly important for maintaining construction quality under high-pressure conditions. The connections between the various devices were tight and secure, and no water seepage, slurry leakage, or unstable connections were observed during construction, ensuring stable operation under high-pressure conditions.

[0024] The sealer fitting is installed on the pre-buried orifice fitting using removable sealing fasteners. This design facilitates the installation, removal and maintenance of the equipment. At the same time, the gland design makes the fixation of the drill pipe more simple and reliable.

[0025] The anti-clogging assembly allows the drill pipe to be moved up and down during the grouting process without pausing operations. This design avoids the drill pipe locking problem associated with traditional methods due to prolonged operation, thereby improving overall construction efficiency. The anti-clogging assembly rises and falls synchronously with the movement of the drill pipe, ensuring smooth grout discharge. This not only prevents blockage caused by solidified slurry but also ensures the continuity of the grouting process, reducing downtime caused by clearing blockages. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 This is a schematic diagram of the connection structure of the clamp of the present utility model;

[0029] Figure 3 For this utility model Figure 1 Middle AA section drawing;

[0030] Figure 4 For this utility model Figure 1 Middle BB cross-section;

[0031] Figure 5 This is a structural schematic diagram of the driving rod of the utility model in a tightened state;

[0032] Figure 6 This is a schematic structural diagram of the drive rod of the utility model in a disassembled state.

[0033] Description of reference numerals:

[0034] In the figure: 1. Curtain grouting assembly; 2. Closer pipe fitting; 3. Embedded orifice pipe fitting; 4. Drill rod fitting; 5. Bottom of hole; 6. Pressure cap; 7. Buckle; 8. Locking bolt; 9. Slurry outlet; 10. Removable sealing fastener; 11. Closer flange; 12. Embedded orifice pipe flange; 13. Waterproof rubber pad; 14. Clamp; 15. Auxiliary pulley; 16. Rope; 17. Elastic rubber ball; 18. Rubber ball holder; 19. Slurry outlet anti-blocking component; 20. Support rod seat; 21. Removable end cover; 22. Drive rod; 23. Spring member; 24. Fixing ring; 25. Pull ring; 26. Limit rod; 27. Anti-blocking push blade. DETAILED DESCRIPTION

[0035] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0036] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0037] This embodiment provides Figures 1 to 6 The high-pressure deep hole curtain grouting orifice device shown includes: a curtain grouting assembly 1, a pre-buried orifice pipe 3, a sealer pipe 2, a drill rod 4, a gland 6, and a slurry outlet 9.

[0038] In this embodiment, the curtain grouting assembly 1 is used in high-pressure deep-hole curtain grouting construction.

[0039] In this embodiment, the embedded orifice pipe fitting 3 is pre-installed in the deep hole to provide a docking point for the subsequent closure pipe fitting 2, thereby ensuring the stability of the overall structure.

[0040] In this embodiment, the obturator tube 2 is removably mounted on the top of the pre-buried orifice tube 3 via a removable sealing fastener 10. As a component connected to the pre-buried orifice tube 3, the obturator tube 2 is secured by the removable sealing fastener 10, ensuring the tightness and safety of the orifice. It also provides access for the drill rod 4 and is equipped with a gland 6 to tightly compact and secure the drill rod 4.

[0041] In this embodiment, the drill rod member 4 is longitudinally inserted from the top end of the sealer pipe member 2 and extends into the inner cavity of the pre-buried hole pipe member 3, and the slurry enters the hole through the drill rod member 4 and flows to the bottom of the hole 5; the drill rod member 4 is a key component for transporting the slurry to the bottom of the hole 5, and at the same time, it can drive the slurry anti-blocking component 19 through up and down movement to prevent the slurry from solidifying and causing the drill rod to get stuck or block the slurry outlet pipe 9.

[0042] In this embodiment, the gland 6 is tightly pressed against the top of the inner cavity of the obturator tube 2 and is fixed to the obturator tube 2 by screwing fasteners. The top of the drill rod 4 extends upward from the gland 6.

[0043] In this embodiment, the slurry outlet 9 is horizontally passed through the outer wall of the lower peripheral side of the closure pipe 2 and is connected to the top end of the drill rod 4 through the slurry outlet anti-blocking component 19, so that the drill rod 4 can be moved up and down without pausing the construction during the grouting construction, avoiding the drill being stuck during long construction periods. The up and down movement of the drill rod 4 drives the slurry outlet anti-blocking component 19 to rise and fall synchronously, so that the slurry outlet anti-blocking component 19 drives the slurry in the slurry outlet 9 to be discharged smoothly to prevent blockage. During the grouting construction process, the drill rod can be moved without pausing the construction, avoiding the drill being stuck or buried during long construction periods, and ensuring the continuity of the grouting process.

[0044] In this embodiment, the slurry discharge anti-blocking assembly 19 includes a clamp 14 fixed to the outer wall of the top end extending from the drill rod 4, an auxiliary pulley 15 that extends laterally and rotatably and is arranged on the outer wall of the sealer pipe 2 and is located above the slurry discharge pipe mouth 9, a driving rod 22 elastically arranged in the slurry discharge pipe mouth 9, and a rope 16 whose one end is fixed to the outer wall of the clamp 14 and the other end is wrapped around the outer wall of the auxiliary pulley 15 and extended and fixed on the driving rod 22.

[0045] In this embodiment, the free end of the slurry outlet pipe 9 is threadedly connected to a detachable end cover 21 , and a fixing ring 24 is integrally cast on the inner wall of the end of the detachable end cover 21 away from the slurry outlet pipe 9 .

[0046] In this embodiment, a spring member 23 is coaxially disposed in the inner cavity of the detachable end cover 21 , and one end of the spring member 23 elastically abuts against the inner wall of the fixing ring 24 .

[0047] In this embodiment, the outer wall of one end of the driving rod 22 close to the detachable end cover 21 is symmetrically welded with a limiting rod 26 . The driving rod 22 is coaxially inserted into the detachable end cover 21 and the two limiting rods 26 are pressed against the other end of the spring member 23 .

[0048] In this embodiment, a pull ring 25 is welded to the free end of the driving rod 22 , and one end of the rope 16 away from the clamp 14 is fixedly connected to the pull ring 25 .

[0049] In this embodiment, the slurry discharge anti-blocking component 19 also includes two anti-blocking push blades 27 symmetrically welded to the outer wall of the other end of the driving rod 22, so that the rope 16 is pulled when the drill rod 4 rises. The rope 16 rises under the rotation of the auxiliary pulley 15, and the rope 16 pulls the driving rod 22 toward the outside of the detachable end cover 21, so that the limit rod 26 squeezes the spring member 23. When the drill rod 4 is pulled up and then falls, the rope 16 loses the tension on the driving rod 22. After the elastic reaction force of the spring member 23, the spring member 23 elastically pushes the limit rod 26, so that the limit rod 26 drives the driving rod 22 to move toward the inner cavity of the obturator pipe 2, so that the anti-blocking pushing blade 27 on the side of the driving rod 22 pushes the slurry in the slurry outlet 9. In this way, the drill rod member 4 is repeatedly moved up and down, which can not only prevent the drill rod from being solidified by the slurry during high-pressure grouting (the so-called "cast drill rod" phenomenon), but also prevent the slurry outlet 9 from being blocked, which helps to discharge the slurry smoothly. The driving rod 22 is allowed to telescope under the action of the spring member 23, and then the anti-blocking pushing blade 27 clears the slurry residue in the slurry outlet 9, ensuring smooth slurry discharge.

[0050] In this embodiment, a support rod seat 20 is welded to the outer wall of the sealer pipe 2 just above the slurry outlet 9. A hinge notch is provided at the end of the support rod seat 20 away from the sealer pipe 2, and the auxiliary pulley 15 is rotatably installed in the hinge notch through a pin shaft.

[0051] In this embodiment, the removable sealing fastener 10 includes a closure flange 11 welded to the bottom end of the closure pipe 2, a pre-buried orifice pipe flange 12 welded to the top end of the pre-buried orifice pipe 3, and a waterproof rubber gasket 13 disposed between the closure flange 11 and the pre-buried orifice pipe flange 12. The pre-buried orifice pipe flange 12 is fastened and sealed to the closure flange 11 by bolts. The waterproof rubber gasket 13 placed between the two flanges blocks the flow of slurry from the hole to the outside world. After the slurry passes through the drill rod 4 to the bottom of the hole 5, a portion of it penetrates into the cracks, while the other portion is discharged from the slurry outlet 9 through the closure. This ensures that the closure does not exhibit abnormal performance under high-pressure conditions, making it suitable for high-pressure deep-hole curtain grouting construction and ensuring construction quality.

[0052] In this embodiment, the screw fastener includes a buckle 7 symmetrically welded to the outer wall of the closure tube 2 at the top end, and a locking bolt 8 longitudinally penetrating the top of the gland 6, which is screwed together with the buckle 7. A rubber ball holder 18 is arranged above the slurry outlet 9 and in the inner cavity of the closure tube 2. The top surface of the rubber ball holder 18 is connected with a resilient rubber ball 17, which is located directly below the gland 6. The gland 6 is tightly compacted at the top end of the closure tube 2, and is used in cooperation with the buckle 7 and the locking bolt 8 to fix the drill rod 4 and keep its position stable.

[0053] Working principle:

[0054] The high-pressure deep-hole curtain grouting orifice device is used to pre-install the pre-buried orifice tube 3 in the deep hole where curtain grouting is needed before construction. The closure tube 2 is tightly connected with the pre-buried orifice tube 3 through the detachable sealing fastener 10, i.e. the closure flange 11, the pre-buried orifice tube flange 12 and the waterproof rubber pad 13. It is ensured that the waterproof rubber pad 13 is placed between the two flanges, and is tightly fastened by bolts to form an effective seal.

[0055] The drill rod 4 is longitudinally inserted from the top of the closure tube 2 and extends to the inner cavity of the pre-buried orifice tube 3 until the bottom of the hole 5. The gland 6 is fixed at the top end of the closure tube 2, while the buckle 7 and the locking bolt 8 in the screw fastener are used to further reinforce the position of the gland 6.

[0056] During the high-pressure deep-hole curtain grouting construction, the drill rod 4 does not need to be removed after drilling. It is checked whether the gland 6 is compacted tightly, and the gland 6 is compacted and closed using the buckle 7 and the locking bolt 8 on both sides. The slurry is delivered to the bottom of the hole 5 through the drill rod 4. Part of the slurry penetrates into the rock fissures, and the other part is discharged through the slurry outlet 9.

[0057] The slurry discharge anti-blocking assembly 19 plays a key role in this process. It includes a clamp 14, an auxiliary pulley 15, a rope 16, a driving rod 22, a spring 23, a fixing ring 24, a pull ring 25, a limiting rod 26 and anti-blocking pushing blades 27.

[0058] When the drill rod 4 moves up and down, the clamp 14 moves with the drill rod 4, driving the rope 16 to slide on the auxiliary pulley 15. The rope 16 pulls the driving rod 22, one end of which is connected to the anti-blocking pushing blades 27. These blades are agitated by the driving rod 22 to prevent the slurry in the slurry outlet 9 from being blocked due to solidification. The driving rod 22 is affected by the elastic force of the spring 23 during movement. When the drill rod 4 rises, the spring 23 is compressed. When the drill rod 4 descends, the spring 23 releases the elastic force to help the driving rod 22 reset, thereby continuously cleaning the slurry outlet 9.

[0059] After the slurry reaches the bottom of the hole 5 through the drill rod 4, part of it seeps into the rock cracks, and the other part is smoothly discharged through the slurry outlet 9. The slurry anti-blocking component 19 ensures that even under long-term construction, the slurry outlet 9 will not be blocked due to slurry solidification, ensuring a continuous grouting process.

[0060] After the grouting operation is completed, the slurry supply is stopped, the drill rod 4 is taken out, the fasteners are loosened, the sealer pipe 2 is removed, and the site is cleaned to prepare for the next step.

[0061] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by ... does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0062] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure deep hole curtain grouting orifice device, characterized in that: include: A curtain grouting assembly (1) is used for high-pressure deep-hole curtain grouting construction; Pre-buried hole pipe fittings (3), pre-buried in the deep hole; The closure pipe (2) is detachably mounted on the top end of the pre-buried orifice pipe (3) via a detachable sealing fastener (10); A drill rod (4) is longitudinally inserted from the top end of the obturator pipe (2) into the inner cavity of the pre-buried hole pipe (3), and slurry enters the hole through the drill rod (4) and flows to the bottom of the hole (5); A gland (6) is tightly pressed against the top end of the inner cavity of the obturator tube (2) and fixed to the obturator tube (2) by screwing a fastener, and the top end of the drill rod (4) extends upward from the gland (6); The slurry outlet (9) is horizontally passed through the outer wall of the lower peripheral side of the sealer pipe (2) and is connected to the top end of the drill rod (4) through the slurry outlet anti-blocking component (19), so that the drill rod (4) can be moved up and down without pausing the construction during the grouting construction process. The up and down movement of the drill rod (4) drives the slurry outlet anti-blocking component (19) to rise and fall synchronously, so that the slurry outlet anti-blocking component (19) drives the slurry in the slurry outlet (9) to be discharged smoothly to prevent blockage.

2. A high-pressure deep hole curtain grouting orifice device according to claim 1, characterized in that: The slurry discharge anti-blocking assembly (19) comprises a clamping member (14) fixed to the outer wall of the top end extending from the drill rod member (4), an auxiliary pulley (15) extending transversely and rotatably arranged on the outer wall of the sealer pipe member (2) and located above the slurry discharge pipe opening (9), a driving rod (22) elastically arranged in the slurry discharge pipe opening (9), and a rope (16) having one end fixed to the outer wall of the clamping member (14) and the other end wrapped around the outer wall of the auxiliary pulley (15) and extending and fixed to the driving rod (22).

3. A high-pressure deep hole curtain grouting orifice device according to claim 2, characterized in that: The free end of the pulp outlet pipe (9) is threadedly connected to a detachable end cover (21), and a fixing ring (24) is integrally cast on the inner wall of one end of the detachable end cover (21) away from the pulp outlet pipe (9).

4. A high-pressure deep hole curtain grouting orifice device according to claim 3, characterized in that: A spring member (23) is coaxially arranged in the inner cavity of the detachable end cover (21), and one end of the spring member (23) elastically abuts against the inner wall of the fixing ring (24).

5. A high-pressure deep hole curtain grouting orifice device according to claim 4, characterized in that: A limiting rod (26) is symmetrically welded to the outer wall of one end of the driving rod (22) close to the detachable end cover (21); the driving rod (22) is coaxially inserted into the detachable end cover (21) and the two limiting rods (26) are pressed against the other end of the spring member (23).

6. A high-pressure deep hole curtain grouting orifice device according to claim 5, characterized in that: A pull ring (25) is welded to the free end of the driving rod (22), and one end of the rope (16) away from the clamp (14) is fixedly connected to the pull ring (25).

7. A high-pressure deep hole curtain grouting orifice device according to claim 6, characterized in that: The slurry discharge anti-blocking assembly (19) further comprises two anti-blocking pushing blades (27) symmetrically welded to the outer wall of the other end of the driving rod (22).

8. The high-pressure deep hole curtain grouting orifice device according to claim 7, characterized in that: A support rod seat (20) is welded to the outer wall of the sealer pipe (2) just above the slurry outlet (9), and the support rod seat (20) is provided with a hinge notch at one end away from the sealer pipe (2). The auxiliary pulley (15) is rotatably mounted in the hinge notch via a pin shaft.

9. The high-pressure deep hole curtain grouting orifice device according to claim 1, characterized in that: The detachable sealing fastener (10) comprises a closure flange (11) welded to the bottom end of the closure pipe (2), a pre-buried orifice pipe flange (12) welded to the top end of the pre-buried orifice pipe (3), and a waterproof rubber pad (13) arranged between the closure flange (11) and the pre-buried orifice pipe flange (12); the pre-buried orifice pipe flange (12) is fastened and sealed to the closure flange (11) by bolts.

10. The high-pressure deep hole curtain grouting orifice device according to claim 9, characterized in that: The screw fastener comprises a buckle (7) symmetrically welded to the outer wall of the top end of the closure pipe (2) and a locking bolt (8) longitudinally penetrating from the top of the pressure cover (6); the locking bolt (8) and the buckle (7) are threadedly connected together; a rubber ball holder (18) is provided above the slurry outlet (9) and in the inner cavity of the closure pipe (2); an elastic rubber ball (17) is connected to the top surface of the rubber ball holder (18); and the elastic rubber ball (17) is located directly below the pressure cover (6).

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