Static expanding agent in-hole injection device

Abstract

The utility model relates to the technical field of static expanding agent injection holes, in particular to a static expanding agent in-hole injection device. The static expanding agent in-hole injection device comprises a mounting plate, a positioning cylinder is fixedly mounted at the bottom of the mounting plate, an elastically-connected piston disc is mounted on the mounting plate, a connecting circular truncated cone is fixedly mounted on the upper disc surface of the piston disc, a threaded connecting pipe is fixedly mounted on the connecting circular truncated cone, and discharging holes are formed in the piston disc and the connecting circular truncated cone. According to the in-hole injection device for the static expanding agent, after the filling amount of the static expanding agent in the lower drill hole is saturated, the subsequently filled static expanding agent starts to push the piston disc upwards, so that the piston disc slides upwards along the drill hole and compresses the spring, and the filled static expanding agent is always kept in a compacted state in the process; a worker does not need to perform subsequent tamping and dense filling operation on the static expanding agent in the drill hole through a tamping tool, and after the operation is completed, the threaded sealing column is inserted into the threaded connecting pipe, so that sealing of the discharging hole is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to static expansion agent hole injection technical field, especially a kind of static expansion agent hole injection device. BACKGROUND

[0002] Static expansion agent is a kind of material that can cause volume expansion through physical and chemical reaction, and its volume expansion can be applied in material production, silent blasting and other fields. More common are concrete expansion agent and refractory expansion agent, which are mainly used to compensate shrinkage during material hardening and prevent cracking. In recent years, static blasting agent has also been developed according to material properties, which mainly causes damage to structures through volume expansion caused by materials. Its technical core is controllable period and controllable volume expansion.

[0003] Hole injection of static expansion agent is a key step in its engineering application (such as coalbed methane exploitation, rock breaking, pile head breaking, etc.), and the hole injection technical process includes hole cleaning and slurry pouring. Specifically, after drilling, high-pressure air pipe is used to remove dust, slag and water in the hole to ensure that the hole wall is dry and clean, and to avoid affecting the reaction effect of the expansion agent. For vertical or downward inclined holes, the mixed slurry can be directly poured into the hole, and the hole is filled and compacted by a tamping tool (such as a tamping rod). Since the static expansion agent needs to be tamped by the tamping rod constantly after being injected, the overall operation process is complicated, and the efficiency of static expansion agent injection is affected.

[0004] Therefore, it is necessary to provide a new static expansion agent hole injection device to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a static expansion agent hole injection device.

[0006] The static expansion agent hole injection device provided by the utility model comprises a mounting plate, a positioning cylinder is fixedly installed at the bottom of the mounting plate, and a through hole coaxially arranged with the positioning cylinder is formed in the mounting plate;

[0007] A piston disc for compacting static expansion agent in the hole is elastically connected to the mounting plate, a connecting circular table is fixedly installed on the upper disc surface of the piston disc, a threaded connection pipe is fixedly installed on the connecting circular table, and a discharging hole coaxially arranged with the threaded connection pipe and communicating with each other is formed in the piston disc and the connecting circular table;

[0008] The static expansion agent hole injection device further comprises a material guide pipe for guiding static expansion agent into the hole below the piston disc and a threaded sealing column for plugging the threaded connection pipe.

[0009] Preferably, the upper table of the connecting circular table is fixedly provided with a spring, and the other end of the spring extends into the positioning cylinder and is fixedly connected with the lower surface of the mounting plate.

[0010] Preferably, the bottom of the material guide pipe is fixedly provided with a lower threaded joint, the lower threaded joint is threadedly fixedly connected with the threaded connecting pipe when the static expanding agent is injected into the drill hole, and the top of the material guide pipe is fixedly provided with an upper threaded joint.

[0011] Preferably, the threaded sealing column is threadedly fixedly connected with the threaded connecting pipe after the static expanding agent is completely injected into the drill hole.

[0012] Preferably, the connecting circular table increases in diameter from top to bottom, the inner ring wall of the positioning cylinder is fixedly provided with a rubber ring, the rubber ring is in a flared structure from top to bottom, and the connecting circular table is in interference fit with the rubber ring.

[0013] Preferably, the through hole formed in the mounting plate is smaller in inner diameter than the inner diameter of the positioning cylinder, and the disc diameter of the piston disc is greater than the outer diameter of the positioning cylinder.

[0014] Compared with the prior art, the static expanding agent hole injection device has the following advantages

[0015] Beneficial effects:

[0016] When the capacity of the static expanding agent in the drill hole below the piston disc increases until the drill hole is filled, the static expanding agent continues to fill the drill hole, and when the filling amount of the static expanding agent in the drill hole below is saturated, the subsequently filled static expanding agent starts to push the piston disc upward, so that the piston disc slides along the drill hole and compresses the spring. In this process, the filled static expanding agent always maintains a compacted state, so that the subsequent tamping and compact filling operation of the static expanding agent in the drill hole by the staff is not needed. After the connecting circular table on the piston disc slides into the rubber ring, the threaded connecting pipe slides out at this time. When the injection of the static expanding agent into the drill hole is completed, the lower threaded joint is rotated downward from the threaded connecting pipe, and after completion, the threaded sealing column is inserted into the threaded connecting pipe, so that the outlet hole is sealed, and therefore the staff does not need to perform the sealing operation on the drill hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structural schematic view of a preferred embodiment of the static expanding agent hole injection device provided by the utility model;

[0018] Figure 2 A Figure 1 An explosion structural schematic view shown in the figure;

[0019] Figure 3 A Figure 1The diagram shows a cross-sectional view of the positioning cylinder, piston disc, and guide tube.

[0020] Figure 4 for Figure 3 A cross-sectional view of the positioning cylinder shown.

[0021] Figure 5 for Figure 3 The diagram shows a cross-sectional view of the piston disc and spring.

[0022] Figure 6 This is a schematic diagram of the installation structure of this utility model inside the hole.

[0023] The following are the labels in the diagram: 1. Mounting plate; 1a. Through hole; 2. Positioning cylinder; 21. Rubber ring; 3. Piston disc; 31. Connecting frustum; 32. Threaded connecting pipe; 3a. Discharge hole; 4. Guide pipe; 41. Lower threaded connector; 42. Upper threaded connector; 5. Spring; 6. Threaded sealing post. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 6 This utility model provides a static expansion agent in-hole injection device, which includes a mounting plate 1, a positioning cylinder 2, and a piston disc 3.

[0027] In the embodiments of this utility model, please refer to Figure 1 and Figure 4 The mounting plate 1 has a positioning cylinder 2 fixedly installed at its bottom, and the mounting plate 1 has a through hole 1a coaxially arranged with the positioning cylinder 2. The mounting plate 1 is elastically connected to a piston disc 3 for compacting the static expansion agent in the drill hole. Specifically, a connecting frustum 31 is fixedly installed on the upper surface of the piston disc 3, and a spring 5 is fixedly installed on the upper surface of the connecting frustum 31. The other end of the spring 5 extends into the positioning cylinder 2 and is fixedly connected to the lower surface of the mounting plate 1. A threaded connecting pipe 32 is fixedly installed on the connecting frustum 31, and the piston disc 3 and the connecting frustum 31 have a discharge hole 3a coaxially arranged with and communicating with the threaded connecting pipe 32.

[0028] The static expansion agent in-hole injection device also includes a guide pipe 4 for guiding the static expansion agent into the hole drilled below the piston disc 3. A lower threaded connector 41 is fixedly installed at the bottom of the guide pipe 4. When injecting the static expansion agent into the hole, the lower threaded connector 41 is threadedly fixedly connected to the threaded connecting pipe 32. An upper threaded connector 42 is fixedly installed at the top of the guide pipe 4.

[0029] It should be noted that before injecting the static expanding agent into the borehole, the lower threaded connector 41 at the bottom of the guide pipe 4 is passed through the through hole 1a of the mounting plate 1 and inserted into the threaded connecting pipe 32. The operator holds the piston disc 3 with one hand and rotates the guide pipe 4 with the other until the lower threaded connector 41 is fixedly connected to the threaded connecting pipe 32. This completes the installation of the guide pipe 4 on the piston disc 3. After installation, the piston disc 3 is inserted into the borehole, and the positioning cylinder 2 is inserted into the borehole opening until the mounting plate 1 abuts against the borehole surface. The mounting plate 1 is then fixed with screws. The output end of the pump used to deliver the static expanding agent is then threadedly connected to the upper threaded connector 42 of the guide pipe 4. Thus, the static expanding agent can be output through the guide pipe 4 into the threaded connecting pipe 32, and then fall into the borehole through the discharge hole 3a of the piston disc 3 and the connecting frustum 31 (as shown in the attached diagram). Figure 6 (as shown);

[0030] When the static expansion agent in the borehole below the piston disc 3 increases until it is full, the static expansion agent continues to fill the borehole. Due to the elastic force of the spring 5, the subsequent filling of static expansion agent continues to compact the static expansion agent filled in the borehole below. When the filling amount of static expansion agent in the borehole below is saturated, the subsequent filling of static expansion agent begins to push the piston disc 3 upward, causing the piston disc 3 to slide upward along the borehole and compress the spring 5 (at this time, the guide tube 4 gradually slides out of the mounting plate 1 along the through hole 1a opened in the mounting plate 1). During this process, the filling static expansion agent is kept in a compacted state, so there is no need for the staff to tamp and compact the static expansion agent in the borehole using tamping tools (such as tamping sticks). After the connecting frustum 31 on the piston disc 3 slides into the rubber ring 21, the threaded connecting tube 32 slides out.

[0031] In this embodiment, the piston disc 3 used is matched with the inner diameter of the drill hole.

[0032] The output pipe of the feed pump is partially made of a flexible tube to avoid affecting the travel of the feed guide pipe 4 as it slides out of the mounting plate 1 through the through hole 1a.

[0033] Furthermore, the diameter of the connecting frustum 31 increases from top to bottom, and a rubber ring 21 is fixedly installed on the inner wall of the positioning cylinder 2. The rubber ring 21 has an flared structure from top to bottom. The connecting frustum 31 and the rubber ring 21 are interference-fitted. When the connecting frustum 31 slides into the rubber ring 21, due to the interference fit between the connecting frustum 31 and the rubber ring 21, the pushing force after the static expansion agent is filled drives the connecting frustum 31 and the rubber ring 21 to form a fixed snap-fit.

[0034] Furthermore, the inner diameter of the through hole 1a on the mounting plate 1 is smaller than the inner diameter of the positioning cylinder 2, and the diameter of the piston disc 3 is larger than the outer diameter of the positioning cylinder 2, so that the piston disc 3 can block the positioning cylinder 2.

[0035] In the embodiments of this utility model, please refer to Figures 1 to 6 The static expansion agent in-hole injection device also includes a threaded sealing post 6 for sealing the threaded connecting pipe 32. After the static expansion agent is injected into the borehole, the threaded sealing post 6 is threadedly fixed to the threaded connecting pipe 32.

[0036] It should be noted that after the static expansion agent is injected into the borehole, the lower threaded connector 41 is unscrewed from the threaded connecting pipe 32. After that, the threaded sealing post 6 is inserted into the threaded connecting pipe 32 to seal the discharge hole 3a. Therefore, there is no need for the operator to perform the sealing operation on the borehole.

[0037] The static expansion agent in-hole injection device provided by this utility model can compact the static expansion agent and seal the hole in both vertical and oblique holes.

[0038] The working principle of the static expansion agent in-hole injection device provided by this utility model is as follows:

[0039] Before injecting the static expansion agent into the borehole, the lower threaded connector 41 at the bottom of the feed pipe 4 is passed through the through hole 1a of the mounting plate 1 and inserted into the threaded connecting pipe 32. The operator holds the piston disc 3 with one hand and rotates the feed pipe 4 with the other until the lower threaded connector 41 is fixedly connected to the threaded connecting pipe 32. This completes the installation of the feed pipe 4 on the piston disc 3. After installation, the piston disc 3 is inserted into the borehole, and the positioning cylinder 2 is inserted into the borehole opening until the mounting plate 1 abuts against the borehole surface. The mounting plate 1 is then fixed with screws. The output end of the feed pump used to deliver the static expansion agent is then threadedly connected to the upper threaded connector 42 of the feed pipe 4. Thus, the static expansion agent can be output through the feed pipe 4 into the threaded connecting pipe 32 and fall into the borehole through the discharge hole 3a on the piston disc 3 and the connecting frustum 31 (as shown in the attached diagram). Figure 6 (as shown);

[0040] When the static expanding agent in the borehole below the piston disc 3 increases until it is full, and more static expanding agent is added to the borehole, the piston disc 3 is subjected to the elastic force of the spring 5. Therefore, the subsequently added static expanding agent continues to compact the static expanding agent filling the borehole below. When the static expanding agent in the borehole below is saturated, the subsequently added static expanding agent begins to push the piston disc 3 upwards, causing the piston disc 3 to slide upwards along the borehole and compress the spring 5 (at this time, the guide tube 4 gradually slides out of the mounting plate 1 along the through hole 1a). During this process, the added static expanding agent... The expansion agent remains compacted, eliminating the need for subsequent compaction and filling of the borehole with a tamping tool (such as a tamping rod). After the connecting frustum 31 on the piston disc 3 slides into the rubber ring 21, the threaded connecting pipe 32 slides out. Once the static expansion agent in the borehole is fully injected, the lower threaded connector 41 is unscrewed from the threaded connecting pipe 32. After this, the threaded sealing post 6 is inserted into the threaded connecting pipe 32 to seal the discharge hole 3a. Therefore, no further sealing of the borehole is required.

[0041] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A static swelling agent in-hole injection device, characterized by, It includes installation plate (1), bottom fixed installation has location cylinder (2), and the installation plate (1) is opened with location cylinder (2) coaxial arrangement and is set up through -hole (1a) on it; The installation plate (1) is elastically connected with the piston disc (3) for compacting static expanding agent in the drill hole, and the upper disc surface of the piston disc (3) is fixedly installed with the connecting circular table (31), the connecting circular table (31) is fixedly installed with the threaded connection pipe (32), and the piston disc (3) and the connecting circular table (31) are provided with the blanking hole (3a) coaxially arranged with the threaded connection pipe (32) and communicated with each other. The static expanding agent hole injection device further comprises a material guide pipe (4) for guiding the static expanding agent into the drill hole below the piston disc (3) and a threaded sealing column (6) for plugging the threaded connection pipe (32).

2. The static expander in-hole injection device of claim 1, wherein, The upper surface of the connecting circular table (31) is fixedly installed with a spring (5), and the other end of the spring (5) extends into the location cylinder (2) and is fixedly connected with the lower surface of the installation plate (1).

3. The static expander in-hole injection device of claim 1, wherein, The bottom of the material guide pipe (4) is fixedly installed with a lower threaded joint (41), and the lower threaded joint (41) is threadedly fixedly connected with the threaded connection pipe (32) when injecting the static expanding agent into the drill hole.

4. The static expander in-hole injection device of claim 3, wherein, The threaded sealing column (6) is threadedly fixedly connected with the threaded connection pipe (32) after the static expanding agent is injected into the drill hole.

5. The static expander in-hole injection device of claim 1, wherein, The connecting circular table (31) increases in diameter from top to bottom, the inner ring wall of the location cylinder (2) is fixedly installed with a rubber ring (21), the rubber ring (21) is in a flared structure from top to bottom, and the connecting circular table (31) is in interference fit with the rubber ring (21).

6. The static expander in-hole injection device of claim 1, wherein, The inner diameter of the through -hole (1a) formed in the installation plate (1) is smaller than the inner diameter of the location cylinder (2), and the disc diameter of the piston disc (3) is greater than the outer diameter of the location cylinder (2).

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