A borehole air spacer with a sealing structure

Abstract

This utility model belongs to the technical field of air gap devices for blast holes, specifically an air gap device for blast holes with a sealing structure. It includes an air bladder, a connecting block on the inner wall of the air bladder, a connecting bolt threaded onto the inner wall of the connecting block, a pressure plate sleeved on the outer wall of the connecting bolt, a pressure ring fixedly connected to the bottom edge of the pressure plate, a pressure groove at the connection between the connecting block and the pressure ring, an inflation cylinder fixedly connected to the bottom of the connecting block, and a pad rod fixedly connected to the bottom of the air bladder. This utility model, by setting a pressure ring and a sealing ring, allows the connecting bolt to rotate, causing the connecting block and pressure plate to come into contact through the thread, thus locking the pressure groove and the pressure ring together to seal the top of the air bladder. Then, the operator moves a positioning ring to engage with a positioning plate, causing the sealing ring on the outer wall of the positioning ring to fit tightly against the outer wall of the pad rod, thus sealing the bottom of the air bladder and preventing air leakage at both ends.

Description

Technical Field

[0001] This utility model belongs to the technical field of air gapers for boreholes, specifically an air gaper for boreholes with a sealing structure. 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 rock and ore impact and crushing 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 are therefore used in mine blasting.

[0003] A search revealed that patent CN205119962U discloses an air gap device, comprising a sealed bag and an airbag. The sealed bag is placed inside the airbag, and liquid raw material A and solid raw material B are respectively contained in the sealed bag or the airbag. The liquid raw material A and solid raw material B are mixed to generate gas. This invention is simple to operate, applicable to deep blasting holes, has a wide range of applications, and is safe and reliable to use.

[0004] However, since the upper and lower ends of the air bladder of the existing borehole air separator are generally sealed by heat sealing, the upper and lower ends of the air bladder are prone to rupture during the inflation process, resulting in air leakage. Summary of the Invention

[0005] The purpose of this invention is to provide a borehole air spacer with a sealing structure to solve the problems mentioned in the background art.

[0006] In view of this, the present invention provides an air gaper for a borehole with a sealing structure, including an air bladder. A connecting block is provided on the inner wall of the air bladder, and a connecting bolt is threadedly connected to the inner wall of the connecting block. A pressure plate is sleeved on the outer wall of the connecting bolt. A pressure ring is fixedly connected to the bottom edge of the pressure plate. A pressure groove is provided at the connection between the connecting block and the pressure ring. An air cylinder is fixedly connected to the bottom of the connecting block. A pad rod is fixedly connected to the bottom of the air bladder. A positioning plate is fixedly connected to the outer wall of the pad rod. A positioning ring is sleeved on the outer wall of the positioning plate. A sealing ring is provided at the connection between the positioning ring and the pad rod. A configuration block is fixedly connected to the bottom of the pad rod.

[0007] Based on the above structure, the connecting bolt rotates, and the connecting block and pressure plate are brought into contact through the thread, so that the pressure groove and the pressure ring are engaged to achieve a seal on the top of the airbag; then, the operator drives the positioning ring to engage with the positioning plate, so that the sealing ring on the outer wall of the positioning ring is tightly fitted with the outer wall of the pad rod to achieve a seal on the bottom of the airbag and prevent air leakage at both ends of the airbag.

[0008] Preferably, the pressure plate forms an engaging structure with the connecting block through the pressure ring and the pressure groove. The cross-section of the pressure ring is arc-shaped. In this embodiment, the connecting bolt rotates, and the connecting block and the pressure plate are brought into contact through the thread, so that the pressure groove and the pressure ring are engaged, thereby achieving a seal on the top of the airbag.

[0009] Preferably, the cross-section of the connection between the positioning disk and the positioning ring is an isosceles trapezoid. In this embodiment, the operator drives the positioning ring to engage with the positioning disk, so that the sealing ring on the outer wall of the positioning ring fits tightly with the outer wall of the pad rod, thereby sealing the bottom of the airbag.

[0010] Preferably, the cross-section of the pad rod is "T" shaped. In this embodiment, by setting the pad rod with a "T" shaped cross-section, the configuration block is prevented from falling off.

[0011] Preferably, a pull rod extends through the top of the air cylinder, and a plug is fixedly connected to the bottom of the pull rod. An air outlet, fixedly connected to the bottom of the air cylinder, is fitted into the outer wall of the plug. A support rod is screwed onto the outer wall of the pad rod, and support pads are fixedly connected to both ends of the support rod. In this embodiment, pulling the pull line on the outer wall of the support rod causes the support pads at both ends of the support rod to fit tightly against the borehole, thereby positioning the support rod. Then, by pulling the pull rod through the pull line, the movement of the pull rod causes the plug to disengage from the air outlet, thereby allowing the gas inside the air cylinder to be injected into the air bag through the air outlet. The air bag inflates and expands, fitting against the inner wall of the borehole, thus enabling the interval operation of the borehole.

[0012] Preferably, the plunger is T-shaped. In this embodiment, by setting the plunger in a T-shape, the gas inside the air cylinder can push the plunger to fit tightly against the air outlet, thus preventing air leakage from the air cylinder.

[0013] Preferably, the length of the support rod is greater than the diameter of the airbag, and the support pad is spherical. In this embodiment, pulling the pull line on the outer wall of the support rod makes the support pads at both ends of the support rod fit tightly with the blast hole, thereby achieving the positioning of the support rod.

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

[0015] 1. This utility model sets up a pressure ring and a sealing ring. When the connecting bolt rotates, the connecting block and the pressure plate are brought into contact through the thread, so that the pressure groove and the pressure ring are fitted together, thus sealing the top of the airbag. Then, the operator drives the positioning ring to fit into the positioning plate, so that the sealing ring on the outer wall of the positioning ring is tightly fitted with the outer wall of the pad rod, thus sealing the bottom of the airbag and preventing air leakage at both ends of the airbag.

[0016] 2. This utility model uses a support rod to pull the pull line on the outer wall of the support rod, so that the support pads at both ends of the support rod fit tightly with the blast hole, thereby positioning the support rod. Then, the pull line pulls the pull rod, and the movement of the pull rod causes the plug to disengage from the air outlet, so that the gas inside the air cylinder is injected into the air bag through the air outlet. The air bag inflates and fits against the inner wall of the blast hole, thereby realizing the interval operation of the blast hole. 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 cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a cross-sectional structural diagram of the pressure ring and pressure groove of this utility model;

[0020] Figure 4 This is a cross-sectional view of the positioning disk and positioning ring of this utility model.

[0021] In the diagram: 1. Airbag; 2. Connecting block; 3. Connecting bolt; 4. Pressure plate; 5. Pressure ring; 6. Pressure groove; 7. Inflation cylinder; 8. Pad rod; 9. Positioning plate; 10. Positioning ring; 11. Sealing ring; 12. Configuration block; 13. Pull rod; 14. Plug; 15. Air outlet; 16. Support rod; 17. Support pad 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 borehole air gaper with a sealing structure, including an airbag 1. A connecting block 2 is provided on the inner wall of the airbag 1. A connecting bolt 3 is threadedly connected to the inner wall of the connecting block 2. A pressure plate 4 is sleeved on the outer wall of the connecting bolt 3. A pressure ring 5 is fixedly connected to the bottom edge of the pressure plate 4. A pressure groove 6 is opened at the connection between the connecting block 2 and the pressure ring 5. An air cylinder 7 is fixedly connected to the bottom of the connecting block 2. A pad rod 8 is fixedly connected to the bottom of the inner part of the airbag 1. A positioning plate 9 is fixedly connected to the outer wall of the pad rod 8. A positioning ring 10 is sleeved on the outer wall of the positioning plate 9. A sealing ring 11 is provided at the connection between the positioning ring 10 and the pad rod 8. A configuration block 12 is fixedly connected to the bottom of the pad rod 8.

[0025] Based on the above structure, the connecting bolt 3 rotates, and the connecting block 2 and the pressure plate 4 are brought into contact through the thread, so that the pressure groove 6 and the pressure ring 5 are fitted together, thereby sealing the top of the airbag 1; then, the operator drives the positioning ring 10 to fit into the positioning plate 9, so that the sealing ring 11 on the outer wall of the positioning ring 10 is tightly fitted into the outer wall of the pad rod 8, thereby sealing the bottom of the airbag 1 and preventing air leakage at both the top and bottom of the airbag 1.

[0026] In one embodiment, the pressure plate 4 forms an engaging structure with the connecting block 2 through the pressure ring 5 and the pressure groove 6, and the cross-section of the pressure ring 5 is arc-shaped.

[0027] In this embodiment, the connecting bolt 3 rotates, and the connecting block 2 and the pressure plate 4 are brought into contact through the thread, so that the pressure groove 6 and the pressure ring 5 are fitted together, thereby achieving a seal on the top of the airbag 1.

[0028] In one embodiment, the cross-section of the connection between the positioning disk 9 and the positioning ring 10 is an isosceles trapezoid.

[0029] In this embodiment, the operator drives the positioning ring 10 to engage with the positioning disk 9, so that the sealing ring 11 on the outer wall of the positioning ring 10 fits tightly with the outer wall of the pad rod 8, thereby sealing the bottom of the airbag 1.

[0030] In one embodiment, the cross-section of the pad rod 8 is "T" shaped.

[0031] In this embodiment, by setting a pad rod 8 with a "T" shaped cross-section, the configuration block 12 is prevented from falling off.

[0032] In one embodiment, a pull rod 13 extends through the top of the air cylinder 7, a plug 14 is fixedly connected to the bottom of the pull rod 13, an air outlet 15 is fitted into the outer wall of the plug 14 and fixedly connected to the bottom of the air cylinder 7, a support rod 16 is screwed onto the outer wall of the pad rod 8, and support pads 17 are fixedly connected to both ends of the support rod 16.

[0033] In this embodiment, the pull line on the outer wall of the support rod 16 is pulled so that the support pads 17 at both ends of the support rod 16 fit tightly with the borehole, thereby positioning the support rod 16. Then, the pull rod 13 is pulled by the pull line, and the movement of the pull rod 13 causes the plug 14 to disengage from the air outlet 15, thereby allowing the gas inside the air cylinder 7 to be injected into the air bag 1 through the air outlet 15. The air bag 1 inflates and fits against the inner wall of the borehole, thereby achieving the interval operation of the borehole.

[0034] In one embodiment, the plunger 14 is T-shaped.

[0035] In this embodiment, by setting a "T"-shaped plug 14, it is beneficial for the gas inside the air cylinder 7 to push the plug 14 to fit tightly with the air outlet 15, thus preventing air leakage from the air cylinder 7.

[0036] In one embodiment, the length of the support rod 16 is greater than the diameter of the airbag 1, and the support pad 17 is spherical in shape.

[0037] In this embodiment, the pull wire on the outer wall of the support rod 16 is pulled so that the support pads 17 at both ends of the support rod 16 fit tightly with the blast hole, thereby positioning the support rod 16.

[0038] When using this utility model, firstly, rotate the connecting bolt 3. The rotation of the connecting bolt 3 causes the connecting block 2 and the pressure plate 4 to come into contact through the thread, so that the pressure groove 6 and the pressure ring 5 are engaged, thereby sealing the top of the airbag 1. Then, the operator drives the positioning ring 10 to engage with the positioning plate 9, so that the sealing ring 11 on the outer wall of the positioning ring 10 is tightly engaged with the outer wall of the pad rod 8, thereby sealing the bottom of the airbag 1 and preventing air leakage at both the top and bottom of the airbag 1.

[0039] Next, the airbag 1 is placed into the borehole through the configuration block 12; then, the pull line on the outer wall of the support rod 16 is pulled so that the support pads 17 at both ends of the support rod 16 fit tightly with the borehole, thereby positioning the support rod 16; then, the pull rod 13 is pulled by the pull line, and the movement of the pull rod 13 causes the plunger 14 to disengage from the air outlet 15, thereby allowing the gas inside the air cylinder 7 to be injected into the airbag 1 through the air outlet 15. The airbag 1 inflates and fits against the inner wall of the borehole, thereby achieving the interval operation of the borehole.

[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 borehole air gaper with a sealing structure, characterized in that, The airbag (1) includes a connecting block (2) on its inner wall, a connecting bolt (3) threaded onto the inner wall of the connecting block (2), a pressure plate (4) sleeved on the outer wall of the connecting bolt (3), a pressure ring (5) fixedly connected to the bottom edge of the pressure plate (4), a pressure groove (6) opened at the connection between the connecting block (2) and the pressure ring (5), an inflation cylinder (7) fixedly connected to the bottom of the connecting block (2), a pad rod (8) fixedly connected to the bottom of the airbag (1), a positioning plate (9) fixedly connected to the outer wall of the pad rod (8), a positioning ring (10) sleeved on the outer wall of the positioning plate (9), a sealing ring (11) provided at the connection between the positioning ring (10) and the pad rod (8), and a configuration block (12) fixedly connected to the bottom of the pad rod (8).

2. The borehole air gaper with a sealing structure according to claim 1, characterized in that: The pressure plate (4) forms a locking structure with the connecting block (2) through the pressure ring (5) and the pressure groove (6), and the cross-section of the pressure ring (5) is arc-shaped.

3. The borehole air gaper with a sealing structure according to claim 1, characterized in that: The cross-section of the connection between the positioning disk (9) and the positioning ring (10) is an isosceles trapezoid.

4. The borehole air gaper with a sealing structure according to claim 1, characterized in that: The cross-section of the pad rod (8) is "T" shaped.

5. The borehole air gaper with a sealing structure according to claim 1, characterized in that: The top of the air cylinder (7) is connected to a pull rod (13), and the bottom of the pull rod (13) is fixedly connected to a plug (14). The outer wall of the plug (14) is fitted with an air outlet (15) that is fixedly connected to the bottom of the air cylinder (7). The outer wall of the pad rod (8) is screwed with a support rod (16), and the two ends of the support rod (16) are fixedly connected to support pads (17).

6. The borehole air gaper with a sealing structure according to claim 5, characterized in that: The plunger (14) is T-shaped.

7. The borehole air gaper with a sealing structure according to claim 5, characterized in that: The length of the support rod (16) is greater than the diameter of the airbag (1), and the support pad (17) is spherical in shape.

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