A needle for minimally invasive grouting

Abstract

The utility model provides a needle head for minimally invasive grouting relates to building engineering technical field, including the joint, still include: needle head subassembly, needle head subassembly includes setting on the joint ladder type needle head, is provided with polytetrafluoroethylene coating in ladder type needle head, in the utility model, ladder type needle head is assembled with the joint through the connecting component, when assembling, the connecting block butt joint connects the ring, rotates the rotating ring and makes it along the connecting ring thread tight, the moving ring is in the limiting groove sliding auxiliary positioning and dismounting, in the process of screwing, the rubber ring in connecting ring drives the clamping block to embed the clamping groove, forms double fixed, ensures the connection seal, the polytetrafluoroethylene coating in ladder type needle head inside reduces the cementation of grout, when grouting, grout enters ladder type needle head through the joint, and through the sealing structure stable injection construction site, realize needle head and joint firm seal connection, reduce the grout, guarantee grouting stable and efficient.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a needle for minimally invasive grouting. Background Technology

[0002] In construction projects, cracks can easily appear in structures such as walls and floors due to settlement and construction. If left untreated, these cracks can lead to problems such as leakage and reduced structural strength. Traditional grouting repair requires large-diameter drilling, which can easily damage the original structure. Minimally invasive grouting needles achieve grouting through small-diameter drilling, reducing structural damage while improving grout sealing and repair efficiency, making them a key tool for crack repair.

[0003] However, in actual use, the following shortcomings still exist. For example, the existing needles for minimally invasive grouting cannot achieve a stable and sealed connection between the needle and the connector, reduce grout blockage, and ensure stable and efficient grouting. Poor sealing between the needle and the connector can lead to grout leakage or backflow from the interface, causing blockage. Poor sealing can also lead to grout leakage and failure to maintain sufficient grouting pressure. Grout blockage or insufficient pressure can lead to uneven grout distribution. Frequent handling of grout blockage, needle replacement, or equipment cleaning can prolong construction time. Poor sealing and grout blockage can affect the stability and uniformity of grouting.

[0004] Therefore, this utility model proposes a needle for minimally invasive grouting to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and propose a needle for minimally invasive grouting.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a needle for minimally invasive grouting, including a connector, and further comprising:

[0007] A needle assembly, the needle assembly including a stepped needle disposed on a connector, the stepped needle having a polytetrafluoroethylene coating inside.

[0008] A connecting assembly includes a connecting block connected to one end of a stepped needle tip. The connecting block has a limiting groove, and a movable ring is slidably connected within the limiting groove. A retaining groove is provided on the side of the connecting block near the limiting groove. A rotating ring is provided on the connecting block. A connecting head is connected to the connecting ring, and the rotating ring is threaded onto the connecting ring. A rubber ring is connected inside the connecting ring, and a retaining block is provided on the rubber ring, with the retaining block disposed within the retaining groove.

[0009] Furthermore, a micropore is provided at the end of the stepped needle head away from the connector.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the micropores are opened at the end of the stepped needle that is away from the connector. During grouting, the grout is delivered to the micropores through the internal channel of the needle. The micropores are small in diameter and evenly distributed, which can disperse the grout into a fine flow stream, reducing the impact on the structural matrix. At the same time, the micropores can control the grout outflow speed, avoiding grout overflow due to excessive flow rate, and allowing the grout to penetrate into the structural gaps more evenly.

[0011] Furthermore, a filter screen is provided inside the connector on the side near the stepped needle.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the filter screen is set on the side of the connector near the stepped needle. After the grout enters the connector from the grouting equipment, it needs to pass through the filter screen first. The filter screen can filter out large particles of impurities in the grout, prevent impurities from entering the stepped needle and clogging the micropores or channels, ensure unobstructed grouting channels, and reduce equipment failures.

[0013] Furthermore, a sealing ring is connected to the rotating ring.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the sealing ring is connected to the rotating ring. When the rotating ring is tightened along the thread of the connecting ring, the sealing ring is squeezed on the contact surface between the rotating ring and the connecting ring. It uses its own elasticity to fill the gap, prevent the grout from leaking from the connection, enhance the sealing performance of the connection, and maintain the stability of the grouting pressure.

[0015] Furthermore, a limiting plate is connected to the side of the connecting block near the rotating ring.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the limiting plate is connected to the side of the connecting block near the rotating ring. When the rotating ring is tightened or loosened, the limiting plate can prevent the rotating ring from moving excessively and prevent the rotating ring from detaching from the connecting block during disassembly, thus playing a limiting protection role.

[0017] Furthermore, the card block is rotatably connected to the connecting ring.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the locking block is rotatably connected to the connecting ring. During assembly, the rubber ring drives the locking block to embed into the slot, so that the locking block can adapt to the angle of the slot. During disassembly, the rotating ring is loosened, and then the connecting block is pushed inward, so that the moving ring pushes the locking block out of the slot. The locking block compresses the rubber ring, realizing quick disassembly and assembly while ensuring a stable connection.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] In this invention, the stepped needle is assembled with the connector via a connecting component. During assembly, the connecting block aligns with the connecting ring, and the rotating ring is rotated to tighten it along the thread of the connecting ring. The moving ring slides within the limiting groove to assist in positioning and disassembly. During tightening, the rubber ring inside the connecting ring drives the locking block to embed into the locking groove, forming a double fixation to ensure a sealed connection. The polytetrafluoroethylene coating inside the stepped needle reduces grout adhesion. During grouting, the grout enters the stepped needle through the connector and is stably injected into the construction area through the sealing structure, achieving a stable and sealed connection between the needle and the connector, reducing grout blockage, and ensuring stable and efficient grouting. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a needle for minimally invasive grouting according to the present invention;

[0022] Figure 2 This is a structural breakdown diagram of a needle for minimally invasive grouting according to the present invention;

[0023] Figure 3 This is a schematic diagram of the connecting component structure of a needle for minimally invasive grouting according to the present invention;

[0024] Figure 4 This is a schematic diagram of the connector structure of a needle for minimally invasive grouting according to the present invention;

[0025] Figure 5 This is a cross-sectional view of the connector structure of a needle for minimally invasive grouting according to this utility model.

[0026] Figure label:

[0027] 1. Connector;

[0028] 2. Needle assembly; 21. Stepped needle; 22. Micropores; 23. PTFE coating; 24. Filter screen;

[0029] 3. Connecting components; 31. Connecting block; 32. Limiting groove; 33. Moving ring; 34. Slot; 35. Rotating ring; 36. Sealing ring; 37. Limiting plate; 38. Connecting ring; 39. Rubber ring; 310. Locking block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1-5As shown, this embodiment provides a technical solution: a needle for minimally invasive grouting, including a connector 1, and further comprising:

[0032] Needle assembly 2, the needle assembly 2 includes a stepped needle 21 disposed on the connector 1, the stepped needle 21 being provided with a polytetrafluoroethylene coating 23;

[0033] The connecting assembly 3 includes a connecting block 31 connected to one end of the stepped needle 21. A limiting groove 32 is formed on the connecting block 31, and a moving ring 33 is slidably connected within the limiting groove 32. A retaining groove 34 is formed on the side of the connecting block 31 near the limiting groove 32. A rotating ring 35 is provided on the connecting block 31, and a connecting ring 38 is connected to the connecting head 1. The rotating ring 35 is threaded onto the connecting ring 38. A rubber ring 39 is connected within the connecting ring 38, and a retaining block 310 is provided on the rubber ring 39. The retaining block 310 is located within the retaining groove 34. The stepped needle 21 is connected to the connecting head 1 via the connecting assembly 3. During assembly, the connecting block 31 mates with the connecting ring 38, and the rotating ring 35 is rotated to tighten it along the thread of the connecting ring 38. The moving ring 33 slides in the limiting groove 32 to assist in positioning and disassembly. During the tightening process, the rubber ring 39 inside the connecting ring 38 drives the locking block 310 to embed into the locking groove 34, forming a double fixation to ensure a sealed connection. The polytetrafluoroethylene coating 23 inside the stepped needle 21 reduces grout adhesion. During grouting, the grout enters the stepped needle 21 through the connecting head 1 and is stably injected into the construction site through the sealing structure, achieving a stable and sealed connection between the needle and the connecting head 1, reducing grout blockage, and ensuring stable and efficient grouting.

[0034] The above solutions still have the problem of not being able to prevent grout overflow due to excessive flow rate and prevent impurities from entering the stepped needle 21 during grouting operations. Figures 1-2 as well as Figure 5 As shown: A micropore 22 is provided at the end of the stepped needle 21 away from the connector 1. The micropore 22 is located at the end of the stepped needle 21 away from the connector 1. During grouting, the grout is transported to the micropore 22 through the internal channel of the needle. The micropore 22 has a small pore size and is evenly distributed, which can disperse the grout into a fine flow stream, reducing the impact on the structural substrate. At the same time, the micropore 22 can control the grout outflow speed, avoiding grout overflow due to excessive flow rate, and allowing the grout to penetrate into the structural gaps more evenly. A filter screen 24 is provided on the side of the connector 1 near the stepped needle 21. The filter screen 24 is located on the side of the connector 1 near the stepped needle 21. After the grout enters the connector 1 from the grouting equipment, it must first pass through the filter screen 24. The filter screen 24 can filter out large particulate impurities in the grout, preventing impurities from entering the stepped needle 21 and clogging the micropore 22 or channel, ensuring unobstructed grouting channel and reducing equipment failure.

[0035] like Figures 1-5As shown, a sealing ring 36 is connected to the rotating ring 35. When the rotating ring 35 is tightened along the thread of the connecting ring 38, the sealing ring 36 is pressed against the contact surface between the rotating ring 35 and the connecting ring 38. It uses its own elasticity to fill the gap, preventing grout from leaking from the connection, enhancing the sealing performance of the connection, and maintaining stable grouting pressure. A limiting plate 37 is connected to the side of the connecting block 31 near the rotating ring 35. When the rotating ring 35 is tightened or loosened, the limiting plate 37 can... The rotating ring 35 is prevented from moving excessively and from detaching from the connecting block 31 during disassembly, thus providing a limiting protection function. The locking block 310 is rotatably connected to the connecting ring 38. During assembly, the rubber ring 39 drives the locking block 310 to embed into the slot 34, allowing the locking block 310 to adapt to the angle of the slot 34. During disassembly, the rotating ring 35 is loosened, and then the connecting block 31 is pushed inward, causing the moving ring 33 to push the locking block 310 out of the slot 34. The locking block 310 compresses the rubber ring 39, achieving quick disassembly and assembly while ensuring a stable connection.

[0036] Working principle:

[0037] like Figures 1-5 As shown, during the assembly stage, the stepped needle 21 mates with the connector 1 via the connecting component 3. After the connecting block 31 precisely mates with the connecting ring 38, the rotating ring 35 is rotated to tighten it along the thread of the connecting ring 38. During this process, the moving ring 33 slides within the limiting groove 32, which not only assists in positioning to ensure accurate mating but also provides guidance for subsequent disassembly. When the connecting block 31 moves into the connecting ring 38, the rubber ring 39 inside the connecting ring 38 is compressed and deformed. When the locking block 310 reaches the slot 34, the rubber ring 39 returns to its original position, causing the rotating locking block 310 to embed into the slot 34, forming a double fixation with the threaded connection. At the same time, the sealing ring 36 on the rotating ring 35 is squeezed to fill the gaps in the contact surface and prevent grout leakage. The upper limit plate 37 restricts the excessive movement of the rotating ring 35 to prevent it from falling off. During grouting, the grout enters the connector 1 from the grouting equipment and is first filtered by the filter screen 24. Large particles of impurities are intercepted to avoid clogging the subsequent channels. The filtered grout enters the stepped needle 21. The polytetrafluoroethylene coating 23 inside reduces grout adhesion due to its low viscosity, reducing the risk of grout blockage. The grout is transported along the channel to the micropores 22 at the end of the stepped needle 21. The small and uniformly distributed micropores 22 disperse the grout into a fine flow stream, which reduces the impact on the structural substrate and prevents overflow by controlling the flow rate. Finally, the grout is evenly penetrated into the structural gaps, achieving a stable seal between the needle and the connector 1, less grout blockage, and stable and efficient grouting.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A needle for minimally invasive grouting, comprising a connector (1), characterized in that, Also includes: The needle assembly (2) includes a stepped needle (21) disposed on the connector (1), and the stepped needle (21) is provided with a polytetrafluoroethylene coating (23). The connecting component (3) includes a connecting block (31) connected to one end of a stepped needle (21). A limiting groove (32) is provided on the connecting block (31). A movable ring (33) is slidably connected in the limiting groove (32). A slot (34) is provided on the side of the connecting block (31) near the limiting groove (32). A rotating ring (35) is provided on the connecting block (31). A connecting ring (38) is connected to the connecting head (1). The rotating ring (35) is threadedly connected to the connecting ring (38). A rubber ring (39) is connected in the connecting ring (38). A locking block (310) is provided on the rubber ring (39). The locking block (310) is located in the slot (34).

2. The needle for minimally invasive grouting according to claim 1, characterized in that: The stepped needle (21) has a microhole (22) at the end away from the connector (1).

3. The needle for minimally invasive grouting according to claim 1, characterized in that: A filter screen (24) is provided inside the connector (1) on the side near the stepped needle (21).

4. The needle for minimally invasive grouting according to claim 1, characterized in that: A sealing ring (36) is connected to the rotating ring (35).

5. The needle for minimally invasive grouting according to claim 1, characterized in that: A limiting plate (37) is connected to the side of the connecting block (31) near the rotating ring (35).

6. The needle for minimally invasive grouting according to claim 1, characterized in that: The card block (310) is rotatably connected to the connecting ring (38).

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