A blasting pressure relief device

Abstract

This utility model relates to a blasting pressure relief device, including a container and a sliding guide. The sliding guide extends along the depth direction of the blasting hole. Several containers are arranged in an array along the length direction of the sliding guide. Each container can be slidably adjusted along the length direction of the sliding guide. Each container is equipped with a locking device to lock it when not being adjusted. This utility model uses the sliding guide to connect multiple containers in series, forming a series blasting pressure relief structure. This not only facilitates the deployment of the device, but also allows for the removal of all containers together from the blasting hole by pulling the sliding guide when a blasting failure requires investigation. This saves time and effort in removal, investigation, and redeployment. The operation is simple, time-saving, and labor-saving. Before placing the device into the blasting hole, the containers can be slidably adjusted to adapt to different deployment depth requirements, facilitating the adjustment of the deployment spacing between adjacent containers.

Description

Technical Field

[0001] This utility model relates to the field of explosive pressure relief technology, specifically an explosive pressure relief device. Background Technology

[0002] Mine blasting stress relief is a technical means to reduce stress concentration and prevent disasters such as rock bursts and coal and gas outbursts by generating energy through explosive blasting to create fissures and fracture zones in coal and rock masses at specific locations in the mine. This alters the mechanical properties and stress distribution of the coal and rock mass, allowing stress in high-stress areas to be released to the surrounding coal and rock mass. The implementation process includes key aspects such as designing blasting schemes based on the actual conditions of the mine and drilling operations.

[0003] Currently, in coal seam pre-splitting blasting in mines, cylinders are often used to hold explosives and other blasting materials. During blasting preparation, multiple cylinders containing explosives are typically placed into deep blasting holes, and the blast is initiated using detonation devices such as fuses. However, blasting failures can occur due to various reasons. In the event of a failure, the cylinders need to be removed from the deep blasting holes for investigation. However, it is difficult to remove multiple cylinders simultaneously; they must be removed one by one, which is time-consuming, labor-intensive, and affects subsequent progress. Utility Model Content

[0004] The purpose of this invention is to provide a blasting and pressure relief device that effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A blasting pressure relief device includes a container and a sliding guide. The sliding guide extends along the depth direction of the blasting deep hole. Several containers are arranged in an array along the length direction of the sliding guide. Each container can be slidably adjusted along the length direction of the sliding guide. Each container is equipped with a locking element for locking the container when not adjusting.

[0007] Therefore, it can be seen that using sliding guides to connect multiple containers in series to form a series explosion decompression structure not only facilitates the deployment of the device, but also allows each container to be pulled out of the deep blast hole together by pulling the sliding guides when troubleshooting is needed after a failed blast. This greatly saves time on removal, troubleshooting, and redeployment. The operation is simple, time-saving, and labor-saving, solving the problem that multiple containers cannot be removed at the same time and must be removed one by one, which is time-consuming and labor-intensive.

[0008] Furthermore, the sliding guide is a guide rod with a circular cross-section. The outer peripheral wall of the container is provided with grooves that penetrate the end face of the container at both ends. A sliding block is fixedly installed in the groove, and the sliding block is slidably fitted onto the guide rod through the sliding hole provided thereon.

[0009] Furthermore, the guide rod is embedded through each groove.

[0010] Furthermore, each sliding block has an arc-shaped surface on its outer side. The arc shape of the arc surface matches the arc shape of the outer circumference of the container. The arc surface and the outer circumference of the container complement each other to form a complete circular structure.

[0011] Furthermore, there are two guide rods, which are arranged in parallel.

[0012] Furthermore, each container is equipped with two locking elements, which are distributed on both sides of the sliding block.

[0013] Furthermore, the locking component includes fastening screws, and the outer peripheral surface of the sliding guide is provided with side grooves on both sides of the sliding block. The inner walls of both side grooves are provided with threaded holes that communicate with the grooves. Each threaded hole is threaded with a fastening screw, and the end of the fastening screw abuts against the outer wall of one of the guide rods.

[0014] Furthermore, the fastening screws used are Torx screws.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0016] By using sliding guides to connect multiple containers in series to form a series explosion decompression structure, not only is the deployment of the device more convenient, but also, in the event of a failed explosion requiring investigation, pulling the sliding guides can pull all the containers out of the deep blast hole together, greatly saving the time spent on removal, investigation, and redeployment. The operation is simple, time-saving, and labor-saving, solving the problem that multiple containers cannot be removed at the same time and must be removed one by one, which is time-consuming and labor-intensive. Each loading cylinder can be slidably adjusted along the length of the sliding guide. Before the device is placed into the blasting hole, the loading cylinder can be slidably adjusted to adapt to different deployment depth requirements. At the same time, it is convenient to adjust the deployment distance between two adjacent loading cylinders. Moreover, the adjustment operation is performed before being placed into the blasting hole, which is more convenient. After sliding the container along the guide rod to the desired position, tighten the fastening screw. Its end abuts against the outer wall of the guide rod, achieving two-point fastening, which has a stronger locking ability and can prevent the container from shifting randomly when not being adjusted. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a detailed structural installation diagram of the container in this utility model; Figure 3 for Figure 2 The diagram shows a cross-sectional view of the structure. Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the blasting pressure relief device being placed inside the blasting deep hole.

[0018] In the diagram: 01, blasting deep hole; 1, sliding guide; 11, guide rod; 2, container; 21, groove; 22, sliding block; 221, sliding hole; 222, arc-shaped surface; 3, locking element; 31, side groove; 32, threaded hole; 33, fastening screw. Detailed Implementation

[0019] 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.

[0020] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0021] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0022] Please see Figures 1-5 The present invention provides a blasting pressure relief device, including a container 2. The internal structure of the container 2 is consistent with the outer cylinder used for blasting pressure relief in the prior art. The container 2 contains blasting materials, such as explosives and fuses. The specific loading method and ignition blasting principle are consistent with those in the prior art, and will not be described in detail in this application.

[0023] The device also includes a sliding guide 1, which extends along the depth direction of the blasting deep hole 01. Several containers 2 are installed in an array along the length direction of the sliding guide 1. Multiple containers 2 are connected in series by the sliding guide 1 to form a series explosion pressure relief structure.

[0024] When the device is placed into the blasting deep hole 01, if Figure 5 As shown, each container 2 and the sliding guide 1 are placed together into the blasting deep hole 01. When the blasting fails and needs to be investigated and re-blasted, by pulling the container 2 out of the blasting deep hole 01, each container 2 can be moved out of the blasting deep hole 01 together, so that the container 2 can be taken out of the blasting deep hole 01 at the same time. This greatly saves the time spent on removal, investigation and redeployment, and the operation is simple, time-saving and labor-saving.

[0025] In addition, each container 2 can be slidably adjusted along the length of the sliding guide 1. Before the device is placed into the blasting deep hole 01, the container 2 can be slidably adjusted to adapt to different deployment depth requirements. It also facilitates the adjustment of the deployment distance between two adjacent container 2. Moreover, the position adjustment of the container 2 occurs before it is placed into the blasting deep hole 01, making the operation more convenient.

[0026] like Figure 2 As shown, the sliding guide 1 uses a guide rod 11 with a circular cross section. The guide rod 11 is made of high-strength 45 steel and has a galvanized surface to provide corrosion resistance, in order to meet the requirements of the humid environment in the mine. The guide rod 11 has a diameter of 12mm and its length is customized according to the depth of the blasting deep hole 01. The outer peripheral wall of the container 2 is provided with a groove 21 with both ends penetrating through the end face of the container 2. A sliding block 22 is fixedly installed in the groove 21. The sliding block 22 is slidably fitted onto the guide rod 11 through the sliding hole 221 provided thereon.

[0027] The sliding block 22, which is fixed in the groove 21, is slidably fitted onto the guide rod 11, thereby realizing the series connection of the container cylinders 2. The sliding cooperation between the sliding block 22 and the guide rod 11 plays a guiding and limiting role for the container cylinders 2, and ensures that the container cylinders 2 can slide and adjust along the guide rod 11.

[0028] The sliding block 22 is made of 45 steel with surface hardening treatment and a hardness of HRC40-45. The diameter of the sliding hole 221 is 12.5mm, which is clearance-fitted with the guide rod 11 to ensure that the sliding resistance is ≤5N, so that the container 2 can slide flexibly along the guide rod 11.

[0029] Furthermore, there are two guide rods 11 arranged in parallel. That is, the sliding block 22 has two sliding holes 221, and the two guide rods 11 slide through the two sliding holes 221 on the same sliding block 22. The two guide rods 11 cooperate with the sliding holes 221 on both sides to achieve a positioning effect, prevent the sliding block 22 from deflecting around a single guide rod 11, and improve the guiding effect on the container 2.

[0030] Secondly, the guide rod 11 is embedded through each groove 21. Specifically, the groove 21 is 15mm deep, ensuring that the guide rod 11 and the sliding block 22 are fully embedded and do not protrude from the outer periphery of the cylinder, thereby avoiding the guide rod 11 being outside the periphery of the container cylinder 2 and affecting the degree of fit with the inner wall of the blasting deep hole 01. Secondly, each sliding block 22 has an arc-shaped surface 222 on its outer side. The arc shape of the arc-shaped surface 222 matches the arc shape of the outer periphery of the container 2. The arc-shaped surface 222 and the outer periphery of the container 2 complement each other to form a complete circular structure, ensuring that the outer edge of the sliding block 22 does not exceed the outer edge of the container 2, so that the whole device matches the inner edge of the blasting deep hole 01.

[0031] like Figure 2 As shown, each container 2 is equipped with a locking element 3, which is used to lock the container 2 when not adjusting. Furthermore, each container 2 is equipped with two locking elements 3, which are distributed on both sides of the sliding block 22.

[0032] The locking component 3 includes a fastening screw 33. The outer peripheral surface of the sliding guide component 1 is provided with side grooves 31 on both sides of the sliding block 22. The inner walls of both side grooves 31 are provided with threaded holes 32 that communicate with the grooves 21. Each threaded hole 32 is threaded and fitted with a fastening screw 33. The end of the fastening screw 33 abuts against the outer wall of the guide rod 11 on one side.

[0033] After the container 2 is slidably adjusted to the desired position along the guide rod 11, the fastening screw 33 is tightened by using a screwdriver. The end of the fastening screw 33 abuts against the outer wall of one of the guide rods 11, thereby achieving a fastening effect. This prevents the container 2 from shifting randomly when not being adjusted, so that the position of the container 2 is maintained during deployment. When it is necessary to adjust the container 2 by translation, simply tighten the fastening screw 33.

[0034] In addition, fastening screws 33 are provided on both sides of the sliding block 22 on the container 2 to achieve two-point fastening and stronger locking ability.

[0035] Among them, the fastening screw 33 is an M6×10 Torx screw, which is matched with the M6 ​​threaded hole 32. The screw head is Torx-shaped to prevent misoperation and is compatible with special tools. The contact end is processed to be uneven to increase the contact area with the guide rod 11 and ensure that the contact pressure after tightening is ≥35N・m, thereby ensuring reliable locking of the container 2.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The specific structure, model and coefficient index of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A blasting and pressure relief device, comprising a container (2), characterized in that: It also includes a sliding guide (1); The sliding guide (1) extends along the depth direction of the blasting deep hole (01); Several of the aforementioned container cylinders (2) are arranged in a spaced array along the length direction of the sliding guide (1) on the sliding guide (1); Each of the aforementioned containers (2) can be slidably adjusted along the length direction of the sliding guide (1); Each of the container cylinders (2) is provided with a locking element (3) for locking the container cylinder (2) when not being adjusted.

2. The explosive pressure relief device according to claim 1, characterized in that: The sliding guide (1) is a guide rod (11) with a circular cross-section. The outer peripheral wall of the container (2) is provided with a groove (21) with both ends penetrating the end face of the container (2), and a sliding block (22) is fixedly installed in the groove (21). The sliding block (22) is slidably fitted onto the guide rod (11) through a sliding hole (221) provided thereon.

3. The explosive pressure relief device according to claim 2, characterized in that: The guide rod (11) is embedded through each of the grooves (21).

4. The explosive pressure relief device according to claim 2, characterized in that: Each of the sliding blocks (22) has an arc-shaped surface (222) on its outer side; The arcuate shape of the arcuate surface (222) is adapted to the arcuate shape of the outer periphery of the container (2); The arc-shaped surface (222) complements the outer periphery of the container (2) to form a complete circular structure.

5. The explosive pressure relief device according to claim 2, characterized in that: There are two guide rods (11), and the two guide rods (11) are arranged in parallel.

6. The explosive pressure relief device according to claim 2, characterized in that: Each of the container cylinders (2) is provided with two locking elements (3), and the two locking elements (3) are distributed on both sides of the sliding block (22).

7. The explosive pressure relief device according to claim 6, characterized in that: The locking element (3) includes a fastening screw (33); The sliding guide (1) has side grooves (31) on its outer peripheral surface located on both sides of the sliding block (22); Both of the side grooves (31) have threaded holes (32) communicating with the grooves (21) on their inner walls. Each of the threaded holes (32) is fitted with a fastening screw (33) with matching threads. The ends of the fastening screws (33) all abut against the outer wall of the guide rod (11) on one side.

8. The explosive pressure relief device according to claim 7, characterized in that: The fastening screw (33) is a Torx screw.

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