An overburden separation grouting filling device

Abstract

The utility model relates to the technical field of grouting filling, and specifically discloses an overburden separation layer grouting filling device, which comprises a grouting pipe body, a frame is arranged in the grouting pipe body, the frame is provided with two ring blocks, the two ring blocks are fixedly connected through a plurality of connecting rods, the two ring blocks are coaxially aligned with the grouting pipe body, the outer side of the ring block is attached to the inner wall of the grouting pipe body, the grouting pipe body is provided with a sink corresponding to the plurality of connecting rods, and the frame is provided with an auxiliary extraction mechanism in a matched mode. The ring block arranged in the utility model can effectively clean the inside of the grouting pipe body, the overall cleaning is more efficient, and the normal operation of the grouting filling is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of grouting and filling technology, and in particular to a grouting and filling device for overburden separation. Background Technology

[0002] Overburden separation grouting is a key technology for controlling the subsidence of the overlying strata and surface subsidence after coal seam mining. Its principle is to inject specific grout into the "separation" spaces created by uneven subsidence of the overlying strata in the goaf, forming a stable support structure to effectively mitigate surface subsidence. In this process, the grouting pipeline is a crucial device for filling the overburden separation grout, constituting the grout delivery channel.

[0003] When grouting is performed through existing grouting pipes after drilling, the grout enters through the pipes. After construction and extraction, grout often adheres to the inside of the pipes, requiring internal cleaning. The most common cleaning method is flushing with water. However, water can only remove residues that are still in a liquid or slurry state. It is ineffective against grout that is firmly attached to the pipe wall or has even solidified to a certain strength. Existing grouting pipes often lack effective internal cleaning structures, and manual scraping with a scraper is tedious and laborious.

[0004] To address this issue, we propose a grouting and filling device for overburden separation. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a grouting and filling device for overburden separation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grouting and filling device for overburden separation includes a grouting pipe body. The grouting pipe body has an internal frame with two ring blocks. The two ring blocks are fixedly connected by several connecting rods. The two ring blocks are coaxially aligned with the grouting pipe body, and the outer side of the ring blocks is in contact with the inner wall of the grouting pipe body. The grouting pipe body has a sink groove corresponding to the several connecting rods. The frame is equipped with an auxiliary extraction mechanism.

[0008] Preferably, the two ring blocks are aligned with the two ends of the grouting pipe body, and the opposite sides of the two ring blocks are flush with the two end faces of the grouting pipe body.

[0009] Preferably, the settling groove is strip-shaped and parallel to the axial direction of the grouting pipe body, the connecting rod can slide and match the settling groove, and the inner radius of the connecting rod is the same as the inner wall radius of the grouting pipe body.

[0010] Preferably, the frame can be detachably and fixedly connected to the grouting pipe body by bolts.

[0011] Preferably, the two ends of the grouting pipe can be detachably fixedly connected end to end.

[0012] Preferably, the auxiliary extraction mechanism includes a positioning block, on which two abutments are symmetrically arranged. Both abutments are slidably installed with the positioning block. A bidirectional threaded rod is provided between the two abutments. Each of the two abutments has a threaded hole on its opposite side. The two threaded holes are respectively threadedly connected to the two ends of the bidirectional threaded rod. The middle part of the bidirectional threaded rod is rotatably connected to the positioning block and a rotating block is coaxially fixed thereon.

[0013] Preferably, the two abutments are capable of approaching and separating, and the two abutments are capable of abutting against the edge of the ring block.

[0014] Preferably, the upper and lower edges of the positioning block can fit and abut against the inner side of the ring block, and a pull ring is symmetrically fixed on one side of the positioning block.

[0015] Preferably, the two sides of the positioning block can fit and abut against the inner side of the ring block.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention features a frame inside the grouting pipe. The two ring blocks of the frame fit against the inner wall of the grouting pipe. By removing the frame, the ring blocks can scrape off any solidified grout that may be adhering to the inner wall, achieving an effective internal cleaning effect. Compared to manual cleaning with a scraper, this method is more efficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the first axonometric drawing of this utility model;

[0020] Figure 2 This is the second axonometric drawing of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the structure of the grouting pipe body of this utility model;

[0023] Figure 5This is a schematic diagram of the grouting pipe body and frame of this utility model after separation;

[0024] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0025] Figure 7 This is a schematic diagram of the positioning block of this utility model;

[0026] Figure 8 This is a schematic diagram of the bidirectional threaded rod and rotating block of this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the grouting pipe body of this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the grouting pipe body of this utility model.

[0029] In the diagram: 1. Grouting pipe body; 2. Ring block; 3. Connecting rod; 4. Settling groove; 5. Positioning block; 6. Abutment block; 7. Bidirectional threaded rod; 8. Rotating block; 9. Pull ring; 10. Cone; 11. Grouting hole; 12. Drill bit. 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] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Reference Figure 1 - Figure 10A grouting and filling device for overburden delamination includes a grouting pipe body 1, which is cylindrical with a cylindrical cavity at its center and both ends connected. The grouting pipe body 1 has an internal frame with two ring blocks 2, which are fixedly connected by several connecting rods 3. The two ring blocks 2 are coaxially aligned with the grouting pipe body 1, and their outer sides fit against the inner wall of the grouting pipe body 1. The grouting pipe body 1 has grooves 4 corresponding to the connecting rods 3. The frame is similar to a supporting skeleton inside the grouting pipe body 1, and its shape matches the internal shape of the cavity. Therefore, the ring blocks 2 at this location are annular, allowing the frame to be extracted from the cavity of the grouting pipe body 1. An auxiliary extraction mechanism is provided to facilitate the extraction of the frame from the cavity of the grouting pipe body 1. The ring blocks 2 can be made of stainless steel.

[0033] As a technical optimization of this utility model, the two ring blocks 2 are respectively aligned with the two ends of the grouting pipe body 1, and the opposite sides of the two ring blocks 2 are flush with the two end faces of the grouting pipe body 1. When the frame is pulled out from the cavity of the grouting pipe body 1, the two ring blocks 2 can fit against the inner wall of the grouting pipe body 1 and scrape off any solidified grout that may be adhering to the inner wall. After the grouting pipe body 1 is constructed and the grouting pipe is pulled out, grout often adheres to the inside of the grouting pipe body 1, so it is necessary to clean the inside. By pulling out the ring blocks 2, the ring blocks 2 can fit against the inner wall of the grouting pipe body 1 to achieve the cleaning effect.

[0034] As a technical optimization of this utility model, the settling tank 4 is strip-shaped and axially parallel to the grouting pipe body 1. The connecting rod 3 can slide and match the settling tank 4, and the inner radius of the connecting rod 3 is the same as the inner wall radius of the grouting pipe body 1. Several connecting rods 3 serve to support and connect the two ring blocks 2, and also provide positioning. Simultaneously, the frame formed by the connecting rods 3 provides internal support, increasing the strength of the grouting pipe body 1, similar to an internal support skeleton. Since the inner radius of the connecting rod 3 is the same as the inner wall radius of the grouting pipe body 1, it does not affect the inner diameter of the grouting pipe body 1, and has minimal impact on the conveying of the grout.

[0035] As a technical optimization of this utility model, the frame can be detachably and fixedly connected to the grouting pipe body 1 by bolts. That is, the connecting rod 3 of the frame is provided with through threaded holes, and one or more connecting rods 3 can be provided with through threaded holes. The corresponding grouting pipe body 1 is provided with concave threaded holes. By matching the through threaded holes and concave threaded holes with screws, the fixed connection between the frame and the grouting pipe body 1 can be achieved.

[0036] As a technical optimization of this utility model, the two ends of the grouting pipe body 1 can be detachably fixedly connected end to end. That is, one end of the grouting pipe body 1 is provided with a protruding threaded connection part, and the other end is provided with a concave threaded sleeve. The protruding threaded connection part can be threadedly fixedly connected with the concave threaded sleeve. The above is a common drill rod connection mechanism.

[0037] The grouting pipe body 1 can be a pipe body with several grouting holes 11 at one end, as shown in the figure. Figure 1 , Figure 2 , Figure 4 , Figure 5 The portions corresponding to several grouting holes 11 can be wrapped with plastic sheeting or geotextile to prevent blockage. The grouting pipe 1 can also be a normal connecting pipe, as shown in the reference... Figure 10 That is, without grouting holes 11, one end of the grouting pipe body 1 can be connected to and installed with a drill bit 12. The drill bit 12, in conjunction with the grouting pipe body 1, can realize drilling and grouting operations. One end of the grouting pipe body 1 can also be connected to a normal cone body 10, as shown in the reference. Figure 9 The cone body 10, together with the grouting pipe body 1, can be used for perforated pipe applications, meaning that the cone body 10 reduces inertial resistance.

[0038] As a technical optimization of this utility model, the auxiliary extraction mechanism includes a positioning block 5, on which two abutment blocks 6 are symmetrically arranged. Both abutment blocks 6 are slidably installed with the positioning block 5. A bidirectional threaded rod 7 is provided between the two abutment blocks 6. Each of the two abutment blocks 6 has a threaded hole on its opposite side, which is threadedly connected to both ends of the bidirectional threaded rod 7. The middle part of the bidirectional threaded rod 7 is rotatably connected to the positioning block 5 and coaxially fixed with a rotating block 8. The two abutment blocks 6 can move towards and away from each other, and can abut against the edge of the ring block 2. The two sides of the positioning block 5 can fit against the inner side of the ring block 2. The upper and lower edges of the positioning block 5 can fit against the inner side of the ring block 2. A pull ring 9 is symmetrically fixed on one side of the positioning block 5. That is, the positioning block 5 and the two abutment blocks 6 can be placed inside the grouting pipe body 1 and abut against the edge of the ring block 2. Then, the ring block 2 can be pulled out by pulling the pull ring 9, thus removing the entire frame. The pull ring 9 can be tied with a rope, and the rope can be wound with an existing winch. That is, the rope can be pulled by the winch. When pulling, the grouting pipe body 1 needs to be fixed and clamped by a clamping tool, such as using a clamping mechanism similar to a bench vise to clamp the grouting pipe body 1.

[0039] The operation of setting the positioning block 5 and the two abutment blocks 6 inside the grouting pipe body 1 is as follows: First, it is necessary to ensure that the distance between the two abutment blocks 6 meets the requirements for passing through the ring block 2. This can be achieved by rotating the rotating block 8 to move the two abutment blocks 6 closer together, ensuring that they can enter the ring block 2. Then, the rotating block 8 is reversed to move the two abutment blocks 6 apart. Finally, the two abutment blocks 6 abut against the side of the ring block 2 near the middle of the grouting pipe body 1. Then, the positioning block 5 can be pulled by the two pull rings 9, thereby pulling the entire frame out of the grouting pipe body 1 through the abutment effect of the two abutment blocks 6. Before pulling it out, ensure that the frame is not fixedly connected to the grouting pipe body 1.

[0040] In this invention, the working principle of the device is as follows:

[0041] After the grouting pipe body 1 is constructed and withdrawn, grout often adheres to its interior. When cleaning the interior, it is necessary to first disassemble the multiple sections of the grouting pipe body 1, and then clean each individual section sequentially. During the operation, the frame is pulled out from the cavity of the grouting pipe body 1. At this time, the two ring blocks 2 can adhere to the inner wall of the grouting pipe body 1, scraping off any solidified grout that may be adhering to the inner wall. Afterwards, it can be rinsed with clean water. By removing the ring blocks 2, they can adhere to the inner wall of the grouting pipe body 1, achieving a scraping effect and effective internal cleaning. Compared to manual scraping with a scraper, this method is more efficient and convenient.

[0042] When pulling out the frame, an auxiliary extraction mechanism can be used. First, it is necessary to ensure that the distance between the two abutment blocks 6 meets the requirements for passing through the ring block 2. This can be achieved by rotating the rotating block 8 to move the two abutment blocks 6 closer together, ensuring they can enter the ring block 2. Then, the rotating block 8 is reversed to separate the two abutment blocks 6, and finally, the two abutment blocks 6 abut against the side of the ring block 2 near the middle of the grouting pipe body 1. Then, the positioning block 5 can be pulled by the two pull rings 9, thereby pulling the entire frame out of the grouting pipe body 1 through the abutment effect of the two abutment blocks 6. Before extraction, ensure that the frame and the grouting pipe body 1 are not fixedly connected. The pull rings 9 can be tied with ropes, and the ropes can be wound with an existing winch, i.e., the ropes can be pulled by the winch. When pulling, the grouting pipe body 1 needs to be fixedly clamped by a clamping tool, such as a clamping mechanism similar to a bench vise.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grouting and filling device for overburden separation, characterized in that, The grouting pipe body (1) includes a frame inside the grouting pipe body (1). The frame has two ring blocks (2). The two ring blocks (2) are fixedly connected by several connecting rods (3). The two ring blocks (2) are coaxially aligned with the grouting pipe body (1), and the outer side of the ring blocks (2) is in contact with the inner wall of the grouting pipe body (1). The grouting pipe body (1) is provided with a sink (4) corresponding to several connecting rods (3). The frame is matched with an auxiliary extraction mechanism.

2. The overburden separation grouting and filling device according to claim 1, characterized in that, The two ring blocks (2) are aligned with the two ends of the grouting pipe body (1), and the two opposite sides of the two ring blocks (2) are flush with the two end faces of the grouting pipe body (1).

3. The overburden separation grouting and filling device according to claim 1, characterized in that, The settling trough (4) is strip-shaped and corresponds to the axial direction of the grouting pipe (1). The connecting rod (3) can slide and match the settling trough (4). The inner radius of the connecting rod (3) is the same as the inner wall radius of the grouting pipe (1).

4. The overburden separation grouting and filling device according to claim 1, characterized in that, The frame can be detachably fixed to the grouting pipe (1) by bolts.

5. The overburden separation grouting and filling device according to claim 1, characterized in that, The two ends of the grouting pipe (1) can be detachably fixedly connected end to end.

6. The overburden separation grouting and filling device according to claim 1, characterized in that, The auxiliary extraction mechanism includes a positioning block (5), on which two abutments (6) are symmetrically arranged. Both abutments (6) are slidably installed with the positioning block (5). A bidirectional threaded rod (7) is provided between the two abutments (6). Threaded holes are provided on the opposite side of the two abutments (6). The two threaded holes are threadedly connected to the two ends of the bidirectional threaded rod (7). The middle part of the bidirectional threaded rod (7) is rotatably connected to the positioning block (5) and a rotating block (8) is coaxially fixed thereon.

7. The overburden separation grouting and filling device according to claim 6, characterized in that, The two abutments (6) can move toward and apart, and the two abutments (6) can abut against the edge of the ring block (2).

8. The overburden separation grouting and filling device according to claim 7, characterized in that, The upper and lower edges of the positioning block (5) can fit against the inner side of the ring block (2), and a pull ring (9) is symmetrically fixed on one side of the positioning block (5).

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