Openable and closable rubber pad core pipe for grouting
By setting a fixed deformation sealing part and a sliding deformation sealing part with an openable and closable rubber pad core tube on the grouting pipe, the problem of insufficient sealed space in traditional grouting pipes is solved, the stability and convenience of the grouting process are achieved, and the grouting effect is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional grouting pipes and grouting core pipes have problems such as difficulty in moving the grouting core pipe or insufficient sealed space, resulting in insufficient grouting pressure and inability to effectively open the rubber stopper, thus affecting the grouting effect.
A closable rubber gasket core tube for grouting was designed. By setting a fixed deformation sealing part and a sliding deformation sealing part on the core tube and equipping it with an adjusting part, the flexible switching between sealing and unsealing can be realized, ensuring the stability and convenience of the grouting process.
This allows for flexible adjustment of the sealing components during grouting, reduces the impact of core tube slippage, ensures sufficient grouting pressure, and improves grouting effect and efficiency.
Smart Images
Figure CN224063440U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grouting pipe technology, and more specifically, it relates to an openable rubber pad core pipe for grouting. Background Technology
[0002] The main technological principle of reinforcement grouting is to use the method of bottom plugging, top sealing, and intermediate permeation to carry out drilling and injection. Among them, sleeve valve pipe grouting is a commonly used method in building foundation reinforcement projects.
[0003] Traditional sleeve valve pipes, through the sealed space formed between rubber gaskets, combined with pressure grouting, create significant pressure, which breaks through the grout stop ring and casing material, allowing the grout to penetrate into the soil pores and cracks. Under the grouting pressure, the soil undergoes splitting at the weak structural surface. The grout flows continuously along the soil cracks and fills them. After solidification, the grout forms split grout veins with the soil, which has a significant compaction effect on the soil and improves its bearing capacity.
[0004] Traditional grouting pipes and grouting core pipes have some shortcomings in use. When lifting and inserting the grouting core pipe, the cup-shaped grout stopper on the grouting core pipe needs to move relative to the grouting pipe. If an interference fit is used, the grouting core pipe will be difficult to move; if a clearance fit is used, a sealed space cannot be formed between the grouting core pipe and the grouting pipe, resulting in insufficient grouting pressure, which may prevent the rubber grout stopper from opening for grouting. Therefore, a structure is designed to solve the problem of inconvenience in using existing rubber pad core pipes.
[0005] Therefore, a new solution is needed to address this problem. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an openable rubber pad core tube for grouting.
[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: the grouting openable rubber pad core tube includes a core tube, a plurality of grout discharge holes are circumferentially distributed on the peripheral wall of the core tube near the bottom side, a fixed deformation sealing part is fixedly connected to the core tube below the grout discharge holes, a sliding deformation sealing part is sleeved on the core tube below the grout discharge holes, and an adjusting member is sleeved on the core tube near the top for driving the fixed deformation sealing part and the sliding deformation sealing part to deform synchronously.
[0008] The present invention is further configured such that: a plurality of first connecting rods are fixedly connected below the sliding deformation sealing part and are circumferentially distributed and fixedly connected to the top of the fixed deformation sealing part.
[0009] The present invention is further configured such that: a plurality of the first connecting rods are circumferentially distributed and misaligned with the slurry discharge holes.
[0010] The present invention is further configured such that: the adjusting component includes a first sliding ring sleeved on the outside of the core tube, a plurality of second connecting rods circumferentially distributed are fixedly connected to the bottom of the first sliding ring, the bottom of the plurality of second connecting rods are fixedly connected to the top of the sliding deformation sealing part, a first fixing ring is fixedly connected to the top of the core tube, and a plurality of hexagonal socket head cap screws circumferentially distributed and used to abut against the top of the first sliding ring are threaded onto the first fixing ring.
[0011] The present invention is further configured such that: the fixed deformation sealing part includes a second fixed ring at the bottom and a second sliding ring at the top, a first extrusion cavity is provided between the first fixed ring and the second sliding ring, a first elastic deformation member is provided in the first extrusion cavity and sleeved on the core tube, and a plurality of first clearance deformation ring grooves are provided on the outer side of the first elastic deformation member.
[0012] The present invention is further configured such that: a first elastic deformation ring is sleeved inside the first relief deformation ring groove, and a first rigid ring is fixedly connected to the first elastic deformation ring on the side near the central axis of the first relief deformation ring groove, wherein the thickness of the first rigid ring is less than that of the first elastic deformation ring.
[0013] The present invention is further configured such that: the sliding deformation sealing part includes two third sliding rings sleeved on the core tube, a second extrusion cavity is provided between the two third sliding rings, a second elastic deformation member sleeved on the core tube is provided in the second extrusion cavity, a plurality of second clearance deformation ring grooves are provided on the outer side of the second elastic deformation member, a clearance cavity is provided between the second elastic deformation member and the core tube, a rigid tube sleeved on the outer side of the core tube is provided in the clearance cavity, and the length of the rigid tube is less than that of the second elastic deformation member.
[0014] The present invention is further configured such that: a second elastic deformation ring is sleeved inside the second relief deformation ring groove, and a second rigid ring is fixedly connected to the second elastic deformation ring on the side near the central axis of the second relief deformation ring groove, wherein the thickness of the second rigid ring is less than that of the second elastic deformation ring.
[0015] In summary, this utility model has the following beneficial effects:
[0016] The adjusting component adjusts the sealing function of the fixed deformation sealing part and the sliding deformation sealing part. When the fixed deformation sealing part and the sliding deformation sealing part are sealing, both the fixed deformation sealing part and the sliding deformation sealing part are elastically deformed and pressed against the inner wall of the grouting pipe. When the fixed deformation sealing part and the sliding deformation sealing part do not need to be sealed, the adjusting component drives the fixed deformation sealing part and the sliding deformation sealing part to deform, so that the fixed deformation sealing part and the sliding deformation sealing part relax their pressure on the inner wall of the grouting pipe, thereby reducing the influence of the fixed deformation sealing part and the sliding deformation sealing part on the core tube sliding process. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This is a cross-sectional view of the present invention;
[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle;
[0021] Figure 5 for Figure 3 A magnified view of point C in the middle.
[0022] In the diagram: 1. Core tube; 2. Slurry discharge hole; 3. First connecting rod; 4. First sliding ring; 5. Second connecting rod; 6. First fixing ring; 7. Socket head bolt; 8. Second fixing ring; 9. Second sliding ring; 10. First extrusion chamber; 11. First elastic deformation element; 12. First clearance deformation ring groove; 13. First elastic deformation ring; 14. First rigid ring; 15. Third sliding ring; 16. Second extrusion chamber; 17. Second elastic deformation element; 18. Second clearance deformation ring groove; 19. Clearance chamber; 20. Rigid tube; 21. Second elastic deformation ring; 22. Second rigid ring. Detailed Implementation
[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0024] The grouting uses an openable rubber gasket core tube, such as Figure 1As shown, the system includes a core tube 1. Several circumferentially distributed grout discharge holes 2 are perforated on the peripheral wall of the core tube 1 near the bottom. A fixed deformation sealing part is fixedly connected to the core tube 1 below the grout discharge holes 2 by welding. A sliding deformation sealing part is fitted onto the core tube 1 below the grout discharge holes 2. An adjusting component is fitted onto the core tube 1 near the top to drive the fixed deformation sealing part and the sliding deformation sealing part to deform synchronously. Under the action of the adjusting component, the sealing function of the fixed deformation sealing part and the sliding deformation sealing part is adjusted. When the fixed deformation sealing part and the sliding deformation sealing part are sealing, both the fixed deformation sealing part and the sliding deformation sealing part elastically deform and press against the inner wall of the grouting pipe. When the fixed deformation sealing part and the sliding deformation sealing part do not need to be sealed, the adjusting component drives the fixed deformation sealing part and the sliding deformation sealing part to deform, so that the fixed deformation sealing part and the sliding deformation sealing part relax their resistance to the inner wall of the grouting pipe, reducing the influence of the fixed deformation sealing part and the sliding deformation sealing part on the sliding process of the core tube 1.
[0025] like Figure 1 As shown, a plurality of first connecting rods 3 are fixedly connected to the lower part of the sliding deformation sealing part and to the top part of the fixed deformation sealing part. The plurality of first connecting rods 3 are circumferentially distributed and staggered with the grout discharge hole 2. This arrangement can avoid the first connecting rods 3 from blocking the grout discharge hole 2, and ensure that the opening degree of the grout discharge hole 2 and its function are more stable. The first connecting rods 3 are fixed to the sliding deformation sealing part and the fixed deformation sealing part by welding, so that when the sliding deformation sealing part is subjected to an upward force, it can be applied vertically to the fixed deformation sealing part. This allows both the sliding deformation sealing part and the fixed deformation sealing part to deform and resist the inner closure of the grouting pipe, ensuring that the subsequent grouting process can be stably realized.
[0026] like Figure 1 and Figure 2 As shown, the adjusting component includes a first sliding ring 4 sleeved on the outside of the core tube 1. The bottom of the first sliding ring 4 is fixedly connected to a plurality of circumferentially distributed second connecting rods 5 by welding. The bottom of the plurality of second connecting rods 5 is fixedly connected to the top of the sliding deformation sealing part by welding. The top of the core tube 1 is fixedly connected to a first fixing ring 6 by welding. The first fixing ring 6 is threaded with a plurality of circumferentially distributed hexagonal socket bolts 7 for abutting against the top of the first sliding ring 4. The hexagonal socket bolts 7 are used to press against the first sliding ring 4, so that the first sliding ring 4 can apply downward force. Then, the second connecting rods 5 are used to apply force to the sliding deformation sealing part, and the first connecting rods 3 are used to apply force to the fixed deformation sealing part. This allows the sliding deformation sealing part and the fixed deformation sealing part to deform according to the user's needs, so as to achieve stable switching of the sealing function of the sliding deformation sealing part and the fixed deformation sealing part.
[0027] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the fixed deformation sealing part includes a second fixed ring 8 at the bottom and a second sliding ring 9 at the top. A first extrusion chamber 10 is provided between the first fixed ring 6 and the second sliding ring 9. The second fixed ring 8 is fixed to the core tube 1 by welding. A first elastic deformation member 11 is provided in the first extrusion chamber 10 and sleeved on the core tube 1. The two ends of the first elastic deformation member 11 in the length direction are fixed to the second fixed ring 8 and the second sliding plate by adhesive. A plurality of first clearance deformation ring grooves 12 are provided on the outer side of the first elastic deformation member 11. The first clearance deformation grooves are used to weaken the structural strength of the first elastic deformation member 11 along its height direction, so that the second sliding ring 9 can squeeze and elastically deform the first elastic deformation member 11 during the sliding process. This allows the first elastic deformation member 11 to pass out of the first extrusion chamber 10 and abut against the pipe wall of the grouting pipe, achieving the sealing effect of the fixed deformation sealing part. A first elastic deformation ring 13 is sleeved in the first clearance deformation ring groove 12, close to A first rigid ring 14 is fixedly connected to the first elastic deformation ring 13 on one side of the central axis of the first yielding deformation ring groove 12. The first rigid ring 14 is made of stainless steel. The first rigid ring 14 is used to stabilize and limit the position of the first elastic deformation ring 13, ensuring that the position of the first elastic deformation ring 13 and its function are more stable. The thickness of the first rigid ring 14 is smaller than that of the first elastic deformation ring 13. Both the first elastic deformation element 11 and the first elastic deformation ring 13 are made of EPDM rubber. The material's good elasticity and weather resistance ensure that both the first elastic deformation element 11 and the first elastic deformation ring 13 have good and stable elastic deformation performance and weather resistance. The solid part of the first elastic deformation ring 13 in its original state is flush with the groove opening of the first relief deformation ring groove 12, so that the first elastic deformation ring 13 can pass through the first relief deformation ring groove 12 under the squeezing action of the groove wall of the first relief deformation ring groove 12 and abut against the tube wall of the core tube 1, thereby achieving the sealing effect of the first elastic deformation ring 13.
[0028] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the sliding deformation sealing part includes two third sliding rings 15 sleeved on the core tube 1, and a second extrusion cavity 16 is provided between the two third sliding rings 15. A second elastic deformation member 17 sleeved on the core tube 1 is provided in the second extrusion cavity 16. The solid part of the second elastic deformation member 17 in its original state extends to a position flush with the cavity opening of the second extrusion cavity 16. The two sides of the second elastic deformation member 17 in the length direction are fixed to the third sliding rings 15 on its upper and lower sides by adhesive. When the two third sliding rings 15 are subjected to external force, they will apply a stable extrusion force to the second elastic deformation member 17 in the second extrusion cavity 16, so that the second elastic deformation member 17 is extruded and extends out of the second extrusion cavity 16. The second elastic deformation member 17 is deformed to press against the inner wall of the core tube 1 and the grouting pipe, thereby realizing the sealing function of the sliding deformation sealing part.
[0029] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, when the core tube 1 needs to be pulled, the third sliding ring 15 is driven to slide upward, causing the second elastic deformation member 17, which has been squeezed and deformed, to gradually retract into the second compression cavity 16, making the sliding process of the core tube 1 more convenient. Several second yielding deformation ring grooves 18 are arrayed on the outer side of the second elastic deformation member 17. The second yielding deformation ring grooves 18 are used to weaken the compressive strength of the second elastic deformation member 17 along its length, allowing the second elastic deformation member 17 to better undergo elastic deformation when subjected to external force. A yielding cavity 19 is provided between the second elastic deformation member 17 and the core tube 1. A rigid tube 20, made of stainless steel, is sleeved on the outside of the core tube 1 within the yielding cavity 19. The yielding cavity 19 is used to stably position the rigid tube 20. The length of the rigid tube 20 is less than that of the second elastic deformation member 17. The elastic deformation element 17 is four-fifths of the length. This arrangement serves two purposes: firstly, it provides clearance for the third sliding ring 15 to compress the second elastic deformation element 17 during deformation; secondly, it allows the upper third sliding ring 15 to stably transfer the force it receives to the lower third sliding ring 15 through contact with the rigid tube 20. This, in turn, enables the first connecting rod 3 to apply compression or pulling to the fixed deformation sealing part, ensuring a stable switching between the sealing and unsealing effects of the sliding deformation sealing part and the fixed deformation sealing part. The second clearance deformation ring groove 18 is fitted with a second elastic deformation ring 21. Both the second elastic deformation element 17 and the second elastic deformation ring 21 are made of EPDM rubber. The good elasticity and weather resistance of this material ensure that both the second elastic deformation element 17 and the second elastic deformation ring 21 have good and stable elastic deformation performance and weather resistance.
[0030] like Figure 1, Figure 3 , Figure 4 and Figure 5 As shown, a second rigid ring 22 is fixedly connected to the second elastic deformation ring 21 near the central axis of the second relief deformation ring groove 18 by means of adhesive. The thickness of the second rigid ring 22 is less than that of the second elastic deformation ring 21. This arrangement can reduce the influence of the second rigid ring 22 on the process of the second elastic deformation ring 21 being squeezed by the groove wall of the second relief deformation ring groove 18. The solid part of the second elastic deformation ring 21 in its original state is flush with the groove opening of the second relief deformation ring groove 18, so that the second elastic deformation ring 21 can pass through the second relief deformation ring groove 18 and abut against the inner wall of the grouting pipe, thereby achieving the sealing effect of the second elastic deformation ring 21. The second rigid ring 22 is used to stabilize and restrict the state of the second elastic deformation ring 21 in the second relief deformation ring groove 18, ensuring that the position of the second elastic deformation ring 21 and its function are more stable.
[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. An openable rubber gasket core tube for grouting, comprising a core tube (1), a plurality of rows of grouting holes (2) being distributed circumferentially and being formed through the peripheral wall of the core tube (1) near the bottom side, characterized in that: The fixed deformation sealing part is fixedly connected to the core pipe (1) below the slurry discharge hole (2), the sliding deformation sealing part is sleeved on the core pipe (1) below the slurry discharge hole (2), and the adjusting part is sleeved on the core pipe (1) near the top and is used for driving the fixed deformation sealing part and the sliding deformation sealing part to deform synchronously.
2. The rubber pad core pipe for grouting according to claim 1, characterized in that: The lower portion of the sliding deformation sealing part is fixedly connected with a plurality of first connecting rods (3) which are distributed in the circumferential direction and are fixedly connected with the top portion of the fixed deformation sealing part.
3. The split-able rubber gasket core tube for grouting according to claim 2, characterized in that: The plurality of first connecting rods (3) are distributed in the circumferential direction and are distributed in a staggered manner with the slurry discharge hole (2).
4. The split-tube rubber pad core for grouting according to claim 3, characterized in that: The adjusting part comprises a first sliding ring (4) which is sleeved on the outside of the core pipe (1), the bottom portion of the first sliding ring (4) is fixedly connected with a plurality of second connecting rods (5) which are distributed in the circumferential direction, the bottom portion of the plurality of second connecting rods (5) is fixedly connected with the top portion of the sliding deformation sealing part, the top portion of the core pipe (1) is fixedly connected with a first fixed ring (6), and a plurality of inner hexagonal bolts (7) which are distributed in the circumferential direction and are used for abutting against the top portion of the first sliding ring (4) are threadedly connected to the first fixed ring (6).
5. The split-tube rubber pad core for grouting according to claim 4, characterized in that: The fixed deformation sealing part comprises a second fixed ring (8) at the bottom portion and a second sliding ring (9) above, a first extrusion cavity (10) is surrounded between the first fixed ring (6) and the second sliding ring (9), a first elastic deformation part (11) which is sleeved on the core pipe (1) is arranged in the first extrusion cavity (10), and a plurality of first displacement deformation ring grooves (12) which are arranged in an array are formed in the outside of the first elastic deformation part (11).
6. The split-tube rubber pad core for grouting according to claim 5, characterized in that: A first elastic deformation ring (13) is sleeved in the first displacement deformation ring groove (12), a first rigid ring (14) is fixedly connected to the first elastic deformation ring (13) near the center axis of the first displacement deformation ring groove (12), and the thickness of the first rigid ring (14) is smaller than that of the first elastic deformation ring (13).
7. The rubber pad core pipe according to claim 1, wherein: The sliding deformation sealing part comprises two third sliding rings (15) which are sleeved on the core pipe (1), a second extrusion cavity (16) is surrounded between the two third sliding rings (15), a second elastic deformation part (17) which is sleeved on the core pipe (1) is arranged in the second extrusion cavity (16), a plurality of second displacement deformation ring grooves (18) which are arranged in an array are formed in the outside of the second elastic deformation part (17), a displacement cavity (19) is surrounded between the second elastic deformation part (17) and the core pipe (1), a rigid pipe (20) which is sleeved on the outside of the core pipe (1) is arranged in the displacement cavity (19), and the length of the rigid pipe (20) is smaller than that of the second elastic deformation part (17).
8. The rubber sleeve of claim 7, wherein: A second elastic deformation ring (21) is sleeved in the second displacement deformation ring groove (18), a second rigid ring (22) is fixedly connected to the second elastic deformation ring (21) near the center axis of the second displacement deformation ring groove (18), and the thickness of the second rigid ring (22) is smaller than that of the second elastic deformation ring (21).