CN221725068U - Hole plugging device for high-pressure gas expansion blasting - Google Patents

Abstract

The application is suitable for the technical field of blasting, and provides a hole plugging device for high-pressure gas expansion blasting, which comprises a hole plugging piece, a rubber cylinder and a reinforcing ring, wherein the reinforcing ring and the rubber cylinder form an outer seal of a gun hole opening, a plugging section of the hole plugging piece and the rubber cylinder form an inner seal in the gun hole, and both ends of the outer seal and both ends of the inner seal are plugged simultaneously, so that the stability of the hole plugging device is improved, and the hole plugging device is prevented from being pressed and flying out in the rock breaking process; the rubber cylinder has compressibility, can be tightly attached to the wall of the blast hole in the compaction process, and can be suitable for the wall of the blast hole under more non-flat conditions while improving the tightness; the hole plugging device provided by the application can be repeatedly used, and when the friction of the rubber cylinder is damaged, the reinforcing ring can be taken down from the hole plugging piece, and the rubber cylinder can be replaced.

Description

A hole plugging device for high-pressure gas expansion blasting

Technical Field

The present application belongs to the field of blasting technology, and in particular relates to a hole plugging device for high-pressure gas expansion blasting.

Background Art

High-pressure gas expansion rock breaking technology is a non-explosive blasting method. The principle of rock breaking is to load the expansion agent into the expansion tube, and then load the blaster into the tube through the end plug. When the power is turned on, the electrode heating element instantly heats the expansion agent and turns it into gas, which expands rapidly to produce a high-pressure shock wave to the energy release port, providing aerodynamic force and thrust for the rock mass to be broken, and expanding the rock mass. In high-pressure gas expansion rock breaking, the blasthole needs to be plugged to ensure that there is no leakage during the gas expansion process.

The existing high-pressure gas expansion rock-breaking and hole-plugging technology includes a device with a similar structure to an expansion screw, which uses bolts to pressurize the hole wall so that the hole-plugging device is fixed to the hole wall, thereby achieving a sealing effect. The hole-plugging form similar to the expansion bolt, due to its rigid structure, will cause a decrease in airtightness if there are through cracks on the blasthole wall in the initial conditions or during the rock-breaking process, which will greatly reduce the rock-breaking effect. There are also some devices that use elastic materials for plugging, but the elastic materials are easily damaged by friction after blasting and cannot be reused. In addition, the sealing stability is poor and it is easy to burst out of the blasthole.

Utility Model Content

The present application provides a hole plugging device for high-pressure gas expansion blasting, which can solve the problems of poor airtightness, non-reusability and poor sealing stability of the plugging devices in the prior art.

The present application provides a hole plugging device for high-pressure gas expansion blasting, comprising:

The hole plugging member comprises a column section and a plugging section connected to each other, the hole plugging member is used to extend into the blasthole, and one end of the column section away from the plugging section is exposed in the blasthole, the plugging section comprises a narrow end and a wide end arranged opposite to each other, the narrow end is connected to one end of the column section, the outer diameter of the plugging section gradually increases from the narrow end to the wide end, and the outer diameter of the wide end is greater than the outer diameter of the column section;

A rubber cylinder is sleeved on the outer circumference of the column section, and the inner diameter of the rubber cylinder is smaller than the outer diameter of the wide end;

A reinforcement ring is used to be arranged outside the blasthole on the outer periphery of the column section, and the reinforcement ring is threadedly connected to the column section. The reinforcement ring has a large end and a small end that are arranged opposite to each other. The outer diameter of the reinforcement member gradually decreases from the large end to the small end. The outer diameter of the large end is larger than the inner diameter of the blasthole, and the outer diameter of the small end is smaller than the inner diameter of the rubber cylinder and larger than the outer diameter of the column section, and the small end is arranged toward the plugging section.

The reinforcement ring can move toward the inside of the blasthole relative to the column section, so that the end of the rubber cylinder close to the reinforcement ring is clamped between the reinforcement ring and the inner wall of the blasthole to form an external seal; the column section can move toward the outside of the blasthole relative to the reinforcement ring, so that the end of the rubber cylinder close to the sealing section is clamped between the sealing section and the inner wall of the blasthole to form an internal seal.

Optionally, a threaded section is provided on the outer periphery of the column section, and a threaded hole matched with the threaded section is provided in the reinforcement ring.

Optionally, a first driving member is detachably provided at one end of the column section away from the blocking section, and the first driving member is used to drive the hole blocking member to move relative to the reinforcement ring along the axial direction of the reinforcement ring;

A second driving member is detachably provided on the reinforcement ring, and the second driving member is used to drive the reinforcement ring to move relative to the hole blocking member along the axial direction of the hole blocking member.

Optionally, the first driving member is a first driving rod, and a limiting groove for the first driving rod to be inserted is provided at one end of the column section away from the blocking section;

The second driving member is a second driving rod, and a mounting hole adapted to the second driving rod is arranged on the circumferential side of the reinforcement ring.

Optionally, the number of the second driving rods is two, and two mounting holes are arranged opposite to each other on the circumferential side of the reinforcement ring.

Optionally, the outer side surface between the narrow end and the wide end of the blocking section is a truncated cone surface.

Optionally, the outer side surface between the large end and the small end of the reinforcement ring is a truncated cone surface.

The above solution of the present application has the following beneficial effects:

The hole plugging device provided in the present application can form an outer seal of the borehole mouth through the reinforcement ring and the rubber cylinder, and the sealing section of the hole plugging piece and the rubber cylinder form an inner seal inside the borehole, and both ends of the outer seal and the inner seal are sealed at the same time to improve the stability of the hole plugging device and prevent the hole plugging device from flying out under pressure during the rock breaking process; the rubber cylinder itself is compressible, and can fit more closely with the wall of the borehole during the compaction process, which can improve the airtightness and adapt to the borehole wall under more uneven conditions; and the hole plugging device provided in the present application is reusable. When the rubber cylinder is damaged by friction, the reinforcement ring can be removed from the hole plugging piece and the rubber cylinder can be replaced.

Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the structure of a hole plugging device for plugging a blasthole according to an embodiment of the present application;

FIG2 is a schematic diagram of a plugging process of a hole plugging device provided in an embodiment of the present application;

FIG3 is a schematic structural diagram of a reinforcement ring and a second driving member provided in an embodiment of the present application;

FIG4 is a schematic structural diagram of a hole blocking member and a first driving member provided in an embodiment of the present application;

FIG. 5 is a top view of a hole plugging member provided in an embodiment of the present application.

[Description of Reference Numerals]

10. Gunhole;

100. Hole plugging device;

1. Hole plugging parts;

11. column section; 111. threaded section; 112. first driving member; 113. limiting groove; 12. blocking section; 121. narrow end; 122. wide end;

2. Rubber cylinder;

3. Reinforcement ring;

31. Big end; 32. Small end; 33. Threaded hole; 34. Second driving member; 35. Mounting hole.

DETAILED DESCRIPTION

In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or combinations thereof.

It should also be understood that the term “and/or” used in the specification and appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

The hole plugging device for high-pressure gas expansion blasting provided in the present application is exemplarily described below in conjunction with specific embodiments.

As shown in Figure 1, the hole plugging device 100 for high-pressure gas expansion blasting provided in the embodiment of the present application includes a hole plugging member 1, a rubber cylinder 2 and a reinforcement ring 3; the hole plugging member 1 has a column section 11 and a plugging section 12 connected to each other, the hole plugging member 1 is used to extend into the blast hole 10 and one end of the column section 11 away from the plugging section 12 is exposed in the blast hole 10, the plugging section 12 has a narrow end 121 and a wide end 122 arranged oppositely, the narrow end 121 is connected to one end of the column section 11, the outer diameter of the plugging section 12 gradually increases from the narrow end 121 to the wide end 122, and the outer diameter of the wide end 122 is larger than the outer diameter of the column section 11; the rubber cylinder 2 is sleeved on the outer circumference of the column section 11, and the inner diameter of the rubber cylinder 2 is smaller than the outer diameter of the wide end 122; the reinforcement ring 3 is used to be sleeved on the outer circumference of the column section 11 outside the blast hole 10 The reinforcing ring 3 is threadedly connected to the column section 11, and the reinforcing ring 3 has a large end 31 and a small end 32 arranged opposite to each other. The outer diameter of the reinforcing member gradually decreases from the large end 31 to the small end 32. The outer diameter of the large end 31 is larger than the inner diameter of the blast hole 10, and the outer diameter of the small end 32 is smaller than the inner diameter of the rubber cylinder 2 and larger than the outer diameter of the column section 11, and the small end 32 is arranged toward the blocking section 12; the reinforcing ring 3 can move into the blast hole 10 relative to the column section 11, so that the end of the rubber cylinder 2 close to the reinforcing ring 3 is clamped between the reinforcing ring 3 and the inner wall of the blast hole 10 to form an external seal; the column section 11 can move out of the blast hole 10 relative to the reinforcing ring 3, so that the end of the rubber cylinder 2 close to the blocking section 12 is clamped between the blocking section 12 and the inner wall of the blast hole 10 to form an internal seal.

In the above embodiment, the present application is mainly used to seal the blast hole 10 during high-pressure gas expansion blasting to ensure that no leakage occurs during the gas expansion process. After the blast hole 10 is charged, the plugging member 1 of the plugging device 100 can be extended into the blast hole 10, and the end of the column section 11 of the plugging member 1 away from the plugging section 12 is exposed outside the blast hole 10, and the small end 32 of the reinforcement ring 3 faces the inside of the blast hole 10 and the plugging member 1 and the reinforcement ring 3 are clamped together at the muzzle position of the blast hole 10 through the large end 31 of the reinforcement ring 3.

When plugging, first fix the plugging member 1 by external force so that it is suspended in the blast hole 10, then rotate the reinforcement ring 3 to move it toward the blast hole 10, and the small end 32 of the reinforcement ring 3 enters the gap between the rubber cylinder 2 and the column section 11. As the reinforcement ring 3 moves downward, the side wall between the small end 32 and the large end 31 of the reinforcement ring 3 gradually squeezes the rubber cylinder 2 until the end of the rubber cylinder 2 close to the reinforcement ring 3 is tightly clamped between the reinforcement ring 3 and the inner wall of the blast hole 10, thereby forming an external seal of the blast hole mouth.

After the external sealing, the reinforcement ring 3 is fixed by external force, and then the hole plugging member 1 is rotated to move toward the outside of the blast hole 10. The side wall between the narrow end 121 and the wide end 122 of the sealing section 12 gradually squeezes the rubber cylinder 2 until the end of the rubber cylinder 2 close to the sealing section 12 is tightly clamped between the sealing section 12 and the inner wall of the blast hole 10, thereby forming an internal seal inside the blast hole 10.

It is understandable that in the above process, the same effect can be achieved by first performing the inner sealing and then the outer sealing. The order of the outer sealing and the inner sealing is not limited.

The hole plugging device 100 provided in the present application can form an outer seal of the borehole mouth through the reinforcement ring 3 and the rubber cylinder 2, and the sealing section 12 of the hole plugging component 1 and the rubber cylinder 2 form an inner seal in the borehole 10, and both ends of the outer seal and the inner seal are sealed at the same time to improve the stability of the hole plugging device 100 and prevent the hole plugging device 100 from being pressed and flying out during the rock breaking process; the rubber cylinder 2 itself is compressible, and can fit more closely with the wall of the borehole 10 during the compaction process, which can improve the airtightness and adapt to the wall of the borehole 10 under more uneven conditions; and the hole plugging device 100 provided in the present application is reusable. When the rubber cylinder 2 is damaged by friction, the reinforcement ring 3 can be removed from the hole plugging component 1 and the rubber cylinder 2 can be replaced.

In one embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 4 , a threaded section 111 is disposed on the outer periphery of the column section 11 , and a threaded hole 33 adapted to the threaded section 111 is disposed in the reinforcement ring 3 .

In the above embodiment, the threaded section 111 of the column section 11 is threadedly connected to the threaded hole 33 provided in the reinforcement ring 3, so that the hole blocking member 1 and the reinforcement ring 3 can move relative to each other.

In one embodiment, as shown in Figures 1 to 5, a first driving member 112 is detachably provided at one end of the column section 11 away from the blocking section 12, and the first driving member 112 is used to drive the hole blocking member 1 to move axially along the reinforcement ring 3 relative to the reinforcement ring 3; a second driving member 34 is detachably provided on the reinforcement ring 3, and the second driving member 34 is used to drive the reinforcement ring 3 to move axially along the hole blocking member 1 relative to the hole blocking member 1.

In the above embodiment, when the blast hole mouth is sealed externally, the hole plugging member 1 can be fixed by an external force through the first driving member 112 so that it is suspended in the blast hole 10, and then the reinforcing ring 3 is driven by the second driving member 34 to move relative to the hole plugging member 1 toward the inside of the blast hole 10. When the inside of the blast hole 10 is sealed internally, the reinforcing ring 3 can be fixed by an external force through the second driving member 34, and then the hole plugging member 1 is driven by the first driving member 112 to move relative to the reinforcing ring 3 toward the outside of the blast hole 10.

The first driving member 112 and the second driving member 34 are both detachably arranged, so that the rubber cylinder 2 can be easily replaced, and after the hole plugging device 100 completes the sealing of both ends of the outer seal and the inner seal in the blast hole 10, the first driving member 112 and the second driving member 34 can be disassembled for use in sealing the remaining blast holes 10.

Exemplarily, the first driving member 112 may be a handle or a rotary motor, which drives the hole plugging member 1 to rotate relative to the reinforcement ring 3 manually or automatically by an engineering machine. The second driving member 34 may be a handle or a rotary motor, which drives the reinforcement ring 3 to rotate relative to the hole plugging member 1 manually or automatically by an engineering machine.

In a specific embodiment, as shown in Figures 3 to 5, the first driving member 112 is a first driving rod, and a limiting groove 113 for the first driving rod to be inserted is provided at one end of the column section 11 away from the blocking section 12; the second driving member 34 is a second driving rod, and a mounting hole 35 adapted to the second driving rod is provided on the peripheral side of the reinforcement ring 3.

In the above embodiment, when blocking the blast hole 10, the first driving rod can be inserted into the limiting groove 113, and the hole blocking member 1 can be rotated or fixed by manual driving; one end of the second driving rod can be installed in the mounting hole 35, and the reinforcement ring 3 can be rotated or fixed by manual driving.

Specifically, the limiting groove 113 may be a U-shaped groove.

In a more specific embodiment, as shown in FIG. 3 , the number of the second driving rods is two, and two mounting holes 35 are provided on opposite sides of the reinforcement ring 3 .

In the above embodiment, the two mounting holes 35 are relatively arranged on the circumferential side of the reinforcement ring 3 , and the two second driving rods are respectively installed in the corresponding mounting holes 35 to facilitate the rotation of the reinforcement ring 3 .

In one embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 4 , the outer side surface between the narrow end 121 and the wide end 122 of the blocking section 12 is a truncated cone surface.

In the above embodiment, the truncated cone surface between the narrow end 121 and the wide end 122 of the blocking section 12 can facilitate the blocking section 12 to enter the rubber cylinder 2 and squeeze the rubber cylinder 2 .

In one embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the outer side surface between the large end 31 and the small end 32 of the reinforcement ring 3 is a truncated cone surface.

In the above embodiment, the truncated cone surface between the large end 31 and the small end 32 of the reinforcement ring 3 can facilitate the reinforcement ring 3 to enter the rubber cylinder 2 and squeeze the rubber cylinder 2 .

The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims (7)

1. The utility model provides a high-pressure gas expansion blasting is with stifled hole device which characterized in that includes:

The hole plugging piece is provided with a column section and a plugging section which are connected with each other, the hole plugging piece is used for extending into a blast hole, one end of the column section, which is far away from the plugging section, is exposed out of the blast hole, the plugging section is provided with a narrow end and a wide end which are oppositely arranged, the narrow end is connected with one end of the column section, the diameter of the plugging section gradually increases from the narrow end to the wide end, and the outer diameter of the wide end is larger than that of the column section;

the rubber cylinder is sleeved on the periphery of the column section, and the inner diameter of the rubber cylinder is smaller than the outer diameter of the wide end;

The reinforcing ring is sleeved on the periphery of the column section and is in threaded connection with the column section, the reinforcing ring is provided with a large end and a small end which are arranged oppositely, the outer diameter of the reinforcing ring gradually decreases from the large end to the small end, the outer diameter of the large end is larger than the inner diameter of the blast hole, the outer diameter of the small end is smaller than the inner diameter of the rubber cylinder and larger than the outer diameter of the column section, and the small end is arranged towards the plugging section;

The reinforcing ring can move inwards the blast hole relative to the column section, so that one end of the rubber cylinder, which is close to the reinforcing ring, is clamped between the reinforcing ring and the inner wall of the blast hole to form an outer seal; the column section can move outwards of the blast hole relative to the reinforcing ring, so that one end, close to the plugging section, of the rubber cylinder is clamped between the plugging section and the inner wall of the blast hole to form an inner seal.

2. The hole plugging device for high-pressure gas expansion blasting according to claim 1, wherein a threaded section is arranged on the periphery of the column section, and the reinforcing ring is internally provided with a threaded hole matched with the threaded section.

3. The hole plugging device for high-pressure gas expansion blasting according to claim 1, wherein one end of the post Duan Yuan from the plugging section is detachably provided with a first driving member for driving the hole plugging member to move relative to the reinforcing ring in the axial direction of the reinforcing ring;

The reinforcing ring is detachably provided with a second driving piece, and the second driving piece is used for driving the reinforcing ring to move relative to the hole plugging piece along the axial direction of the hole plugging piece.

4. The hole plugging device for high-pressure gas expansion blasting according to claim 3, wherein the first driving member is a first driving rod, and a limit groove for the first driving rod to be clamped is formed in one end of the column Duan Yuan away from the plugging section;

the second driving piece is a second driving rod, and the periphery of the reinforcing ring is provided with a mounting hole which is matched with the second driving rod in a direction.

5. The hole plugging device for high-pressure gas expansion blasting according to claim 4, wherein the number of the second driving rods is two, and two mounting holes are formed in the reinforcing ring in a manner of being opposite to each other on the circumferential side.

6. The hole plugging device for high-pressure gas expansion blasting according to claim 1, wherein an outer side surface between the narrow end and the wide end of the plugging section is a circular truncated cone curved surface.

7. The hole plugging device for high-pressure gas expansion blasting according to claim 1, wherein an outer side surface between the large end and the small end of the reinforcing ring is a circular truncated cone curved surface.