An easily adjustable blasting spacer

Abstract

This utility model belongs to the technical field of blasting spacers, specifically an easily adjustable blasting spacer, including a connecting cylinder. A screw is installed on the inner wall of the connecting cylinder, and a threaded slider is threadedly connected to the outer wall of the screw. A telescopic cylinder is fixedly connected to the bottom end of the threaded slider. A limiting groove is provided at the connection between the connecting cylinder and the telescopic cylinder. An upper connecting plate is fixedly connected to the outer wall of the connecting cylinder, and a lower connecting plate is fixedly connected to the outer wall of the telescopic cylinder. An air bladder is fixedly connected to the connection between the upper and lower connecting plates. By setting up the connecting cylinder and the telescopic cylinder, when the screw rotates, the threaded slider drives the telescopic cylinder to slide along the limiting groove on the inner wall of the connecting cylinder, causing the upper connecting plate on the outer wall of the connecting cylinder and the lower connecting plate on the outer wall of the telescopic cylinder to slide relative to each other, thus achieving adjustment of the air bladder length. The positioning ring improves the support performance of the air bladder and prevents it from folding during inflation.

Description

Technical Field

[0001] This utility model belongs to the technical field of blasting spacers, specifically a blasting spacer that is easy to adjust. Background Technology

[0002] Air-spaced charges have the advantages of reducing explosive consumption per unit, reducing the base; reducing the explosion pressure in the borehole, reducing or even avoiding the impact crushing of rocks and ore caused by coupled charges, expanding the fracture zone, and improving the effective utilization rate of explosive blasting energy, thereby reducing explosive consumption per unit and can be used in mining blasting.

[0003] A search revealed that patent CN221484368U discloses a blasting spacer, comprising: an airbag, a support plate, and a fixing plate. The airbag is a cylindrical structure sealed at one end. The support plate has a through hole in its middle, and the support plate is sleeved onto the open end of the airbag through the through hole. The fixing plate is press-fitted into the airbag and is disposed inside the open end of the airbag and engaged within the through hole. In this invention, the airbag is cylindrical, and adjusting the position of the support plate relative to the sealed end of the airbag changes the axial length of the inflated airbag. Furthermore, placing the fixing plate inside the open end of the airbag and engaging it with the fixing plate achieves a seal, thus adapting to different length requirements for the spacer sections within different blasting holes.

[0004] However, when using the existing easily adjustable burst spacer, the airbag is prone to folding when inflated after the length is adjusted. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a conveniently adjustable blasting spacer, thereby resolving the issues raised in the background section.

[0006] In view of this, the present invention provides a conveniently adjustable blasting spacer, comprising a connecting cylinder, a screw provided on the inner wall of the connecting cylinder, a threaded slider threadedly connected to the outer wall of the screw, a telescopic cylinder fixedly connected to the bottom end of the threaded slider, a limit groove provided at the connection between the connecting cylinder and the telescopic cylinder, an upper connecting plate fixedly connected to the outer wall of the connecting cylinder, a lower connecting plate fixedly connected to the outer wall of the telescopic cylinder, an air bladder fixedly connected to the connection between the upper and lower connecting plates, a positioning ring fixedly connected to the inner wall of the air bladder, and a configuration block fixedly connected to the bottom end of the lower connecting plate.

[0007] Based on the above structure, when the screw rotates, the threaded slider drives the telescopic cylinder to slide along the limiting groove on the inner wall of the connecting cylinder, so that the upper connecting plate on the outer wall of the connecting cylinder slides relative to the lower connecting plate on the outer wall of the telescopic cylinder, thereby adjusting the length of the airbag; by setting a positioning ring, it is beneficial to improve the support performance of the airbag and prevent the airbag from folding during inflation.

[0008] Preferably, the central axis of the connecting cylinder coincides with the central axis of the telescopic cylinder. The telescopic cylinder forms a telescopic structure with the connecting cylinder through a screw and a threaded slider. In this embodiment, when the screw rotates, the threaded slider drives the telescopic cylinder to slide along the limiting groove on the inner wall of the connecting cylinder, thereby realizing the telescopic operation of the telescopic cylinder.

[0009] Preferably, the upper connecting plate and the lower connecting plate are parallel to each other, and the cross-section of the airbag is wavy. In this embodiment, by setting the airbag with a wavy cross-section, it is convenient for the upper connecting plate on the outer wall of the connecting cylinder and the lower connecting plate on the outer wall of the telescopic cylinder to slide relative to each other.

[0010] Preferably, the positioning rings are equidistantly distributed along the inner wall of the airbag. In this embodiment, by setting the positioning rings, it is beneficial to improve the support performance of the airbag and prevent the airbag from folding during inflation.

[0011] Preferably, an inflation port is fixedly connected to the outer wall of the upper connecting plate, a sealing spring is fixedly connected to the inner wall of the inflation port, a movable perforated plate is fixedly connected to the top of the sealing spring, the top of the movable perforated plate is sealed against a fixed perforated plate fixedly connected to the inner wall of the inflation port, a telescopic rod is fixedly connected to the bottom of the movable perforated plate, and a sealing block is fixedly connected to the bottom of the telescopic rod. In this embodiment, the inflation device injects air into the airbag through the inflation port. Then, the high-pressure gas pushes the movable perforated plate to overcome the elasticity of the sealing spring and slide relative to the fixed perforated plate. The high-pressure gas is injected into the airbag through the sealing block. By setting the frustum-shaped sealing block, air leakage after the airbag is inflated can be avoided.

[0012] Preferably, the movable orifice plate and the fixed orifice plate are parallel to each other. In this embodiment, the high-pressure gas pushes the movable orifice plate to overcome the elastic force of the sealing spring and slide relative to the fixed orifice plate.

[0013] Preferably, the sealing block is shaped like a frustum. In this embodiment, by setting a frustum-shaped sealing block, air leakage can be avoided after the airbag is inflated.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, by setting a connecting cylinder and a telescopic cylinder, when the screw rotates, drives the telescopic cylinder to slide along the limiting groove on the inner wall of the connecting cylinder through the threaded slider, so that the upper connecting plate on the outer wall of the connecting cylinder slides relative to the lower connecting plate on the outer wall of the telescopic cylinder, thereby realizing the adjustment of the airbag length; by setting a positioning ring, it is beneficial to improve the support performance of the airbag and prevent the airbag from folding during inflation.

[0016] 2. By setting a sealing block, the inflation device injects air into the airbag through the inflation port. Then, the high-pressure gas pushes the movable orifice plate to overcome the elasticity of the sealing spring and slide relative to the fixed orifice plate. The high-pressure gas is injected into the airbag through the sealing block. By setting a frustum-shaped sealing block, air leakage after the airbag is inflated can be avoided. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the connection structure of the connecting cylinder and the telescopic cylinder of this utility model;

[0020] Figure 4 This is a cross-sectional view of the inflation interface of this utility model.

[0021] In the diagram: 1. Connecting cylinder; 2. Screw; 3. Threaded slider; 4. Telescopic cylinder; 5. Limiting groove; 6. Upper connecting plate; 7. Lower connecting plate; 8. Airbag; 9. Positioning ring; 10. Configuration block; 11. Inflation interface; 12. Sealing spring; 13. Movable perforated plate; 14. Fixed perforated plate; 15. Telescopic rod; 16. Sealing block. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 - Figure 4 The present invention will be described in further detail below.

[0023] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] This utility model discloses a conveniently adjustable blasting spacer, including a connecting cylinder 1, a screw 2 provided on the inner wall of the connecting cylinder 1, a threaded slider 3 threadedly connected to the outer wall of the screw 2, a telescopic cylinder 4 fixedly connected to the bottom end of the threaded slider 3, a limit groove 5 provided at the connection between the connecting cylinder 1 and the telescopic cylinder 4, an upper connecting plate 6 fixedly connected to the outer wall of the connecting cylinder 1, a lower connecting plate 7 fixedly connected to the outer wall of the telescopic cylinder 4, an airbag 8 fixedly connected to the connection between the upper connecting plate 6 and the lower connecting plate 7, a positioning ring 9 fixedly connected to the inner wall of the airbag 8, and a configuration block 10 fixedly connected to the bottom end of the lower connecting plate 7.

[0025] Based on the above structure, when the screw 2 rotates, the threaded slider 3 drives the telescopic cylinder 4 to slide along the limiting groove 5 on the inner wall of the connecting cylinder 1, so that the upper connecting plate 6 on the outer wall of the connecting cylinder 1 and the lower connecting plate 7 on the outer wall of the telescopic cylinder 4 slide relative to each other, thereby adjusting the length of the airbag 8; by setting the positioning ring 9, it is beneficial to improve the support performance of the airbag 8 and prevent the airbag 8 from folding when inflated.

[0026] In one embodiment, the central axis of the connecting cylinder 1 coincides with the central axis of the telescopic cylinder 4, and the telescopic cylinder 4 forms a telescopic structure with the connecting cylinder 1 through the screw 2 and the threaded slider 3.

[0027] When the screw 2 rotates, it drives the telescopic cylinder 4 to slide along the limiting groove 5 on the inner wall of the connecting cylinder 1 through the threaded slider 3, thereby realizing the telescopic operation of the telescopic cylinder 4.

[0028] In one embodiment, the upper connecting plate 6 and the lower connecting plate 7 are parallel to each other, and the cross-section of the airbag 8 is wavy.

[0029] By setting an airbag 8 with a wavy cross-section, it is easy for the upper connecting plate 6 on the outer wall of the connecting cylinder 1 to slide relative to the lower connecting plate 7 on the outer wall of the telescopic cylinder 4.

[0030] In one embodiment, the positioning rings 9 are equidistantly distributed along the inner wall of the airbag 8.

[0031] By setting the positioning ring 9, the support performance of the airbag 8 can be improved, and the airbag 8 can be prevented from folding during inflation.

[0032] In one embodiment, an inflation port 11 is fixedly connected to the outer wall of the upper connecting plate 6, a sealing spring 12 is fixedly connected to the inner wall of the inflation port 11, a movable perforated plate 13 is fixedly connected to the top of the sealing spring 12, a fixed perforated plate 14 is fixedly connected to the inner wall of the inflation port 11 at the top of the movable perforated plate 13, a telescopic rod 15 is fixedly connected to the bottom of the movable perforated plate 13, and a sealing block 16 is fixedly connected to the bottom of the telescopic rod 15.

[0033] The inflation device injects air into the airbag 8 through the inflation port 11. Then, the high-pressure gas pushes the movable perforated plate 13 to overcome the elastic force of the sealing spring 12 and slide relative to the fixed perforated plate 14. The high-pressure gas is injected into the airbag 8 through the sealing block 16. By setting the frustum-shaped sealing block 16, air leakage can be avoided after the airbag 8 is inflated.

[0034] In one embodiment, the movable perforated plate 13 and the fixed perforated plate 14 are parallel to each other.

[0035] High-pressure gas pushes the movable orifice plate 13, which can overcome the elastic force of the sealing spring 12 and slide relative to the fixed orifice plate 14.

[0036] In one embodiment, the sealing block 16 is shaped like a frustum.

[0037] By setting a frustum-shaped sealing block 16, air leakage can be prevented after the airbag 8 is inflated.

[0038] When using this utility model, firstly, the length of the airbag 8 is adjusted by rotating the screw 2, which drives the telescopic cylinder 4 to slide along the limiting groove 5 on the inner wall of the connecting cylinder 1 through the threaded slider 3. This causes the upper connecting plate 6 on the outer wall of the connecting cylinder 1 to slide relative to the lower connecting plate 7 on the outer wall of the telescopic cylinder 4, thereby adjusting the length of the airbag 8. By setting the positioning ring 9, the support performance of the airbag 8 is improved, and the airbag 8 can be prevented from folding when inflated.

[0039] Then, the configuration block 10 drives the airbag 8 to fall into the predetermined position of the blast hole; next, the inflation device works, and air is injected into the airbag 8 through the inflation port 11; then, the high-pressure gas pushes the movable orifice plate 13 to overcome the elastic force of the sealing spring 12 and slide relative to the fixed orifice plate 14, and the high-pressure gas is injected into the airbag 8 through the sealing block 16; by setting the frustum-shaped sealing block 16, air leakage can be avoided after the airbag 8 is inflated.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A conveniently adjustable blasting spacer, characterized in that, The device includes a connecting cylinder (1), with a screw (2) on the inner wall of the connecting cylinder (1), a threaded slider (3) threadedly connected to the outer wall of the screw (2), a telescopic cylinder (4) fixedly connected to the bottom end of the threaded slider (3), a limit groove (5) provided at the connection between the connecting cylinder (1) and the telescopic cylinder (4), an upper connecting plate (6) fixedly connected to the outer wall of the connecting cylinder (1), a lower connecting plate (7) fixedly connected to the outer wall of the telescopic cylinder (4), an airbag (8) fixedly connected to the connection between the upper connecting plate (6) and the lower connecting plate (7), a positioning ring (9) fixedly connected to the inner wall of the airbag (8), and a configuration block (10) fixedly connected to the bottom end of the lower connecting plate (7).

2. The conveniently adjustable blasting spacer of claim 1, wherein: The central axis of the connecting cylinder (1) coincides with the central axis of the telescopic cylinder (4), and the telescopic cylinder (4) forms a telescopic structure with the connecting cylinder (1) through the screw (2) and the threaded slider (3).

3. The conveniently adjustable blasting spacer of claim 1, wherein: The upper connecting plate (6) and the lower connecting plate (7) are parallel to each other, and the cross-section of the airbag (8) is wavy.

4. The conveniently adjustable blasting spacer of claim 1, wherein: The positioning rings (9) are equidistantly distributed along the inner wall of the airbag (8).

5. The conveniently adjustable blasting spacer of claim 1, wherein: An inflation port (11) is fixedly connected to the outer wall of the upper connecting plate (6). A sealing spring (12) is fixedly connected to the inner wall of the inflation port (11). A movable perforated plate (13) is fixedly connected to the top of the sealing spring (12). A fixed perforated plate (14) is sealed and fitted to the top of the movable perforated plate (13) and fixedly connected to the inner wall of the inflation port (11). A telescopic rod (15) is fixedly connected to the bottom of the movable perforated plate (13). A sealing block (16) is fixedly connected to the bottom of the telescopic rod (15).

6. The conveniently adjustable blasting spacer of claim 5, wherein: The movable orifice plate (13) and the fixed orifice plate (14) are parallel to each other.

7. The easily adjustable blasting spacer according to claim 5, characterized in that: The sealing block (16) is shaped like a frustum.

Images