CN221703774U - Mining flame proof device of one-way eruption of piston trigger formula bidirectional triggering - Google Patents

Abstract

The utility model relates to a mining explosion-proof device with piston triggered bidirectional triggering and unidirectional eruption, comprising a transmission rod, a high-pressure gas storage bin, and a powder storage bin. The high-pressure gas storage bin is equipped with a connecting sleeve, and the transmission rod passes through the outer cylinder body, the connecting sleeve, and the powder storage bin. Both ends of the transmission rod are fixedly connected to a receiving plate. The utility model receives the explosion impact on both sides through the receiving plate. When the explosion impact on either side drives the transmission rod to move axially, the triggering piston on the transmission rod can move axially, thereby realizing the introduction of high-pressure gas from the high-pressure gas storage bin into the piston chamber and ultimately triggering the explosion-proof device. In the application, each component is not subjected to force in the non triggering state, so there is no long-term deformation problem. Therefore, the work is stable. The trigger is sensitive and can effectively ensure explosion-proof and explosion suppression in underground mines.

Description

A piston-triggered two-way triggering and one-way erupting explosion-proof device for mining

Technical Field

The utility model relates to the technical field of explosion-proof devices, in particular to a piston-triggered two-way-triggered one-way-erupting explosion-proof device for mining.

Background Art

Mine explosion-proof devices generally use the principle that the speed of the air shock wave generated by the explosion is much greater than the speed of the flame. When the air shock wave arrives, the flame-retardant explosion-proof device is triggered, thereby releasing the fire extinguishing powder in advance to block the flame and prevent other secondary disasters from occurring in the mine.

The utility model with authorization announcement number CN216130957U discloses an automatic explosion-proof device for mining, which receives shock waves through a shock wave receiving part, and a transmission rod is fixedly connected to a trigger positioning part. The trigger positioning part is sleeved on a first sleeve, and a groove corresponding to the outer side of the first sleeve is provided on the trigger positioning part. A limiting hole is provided on the first sleeve, and a round steel ball is arranged in the limiting hole. The triggering and locking of the trigger mechanism are realized by the steel ball. However, the trigger mechanism is fixed in the limiting hole for a long time by the steel ball, and may rust or deform, thereby resulting in failure to trigger when an explosion occurs, affecting the safety of use in the mine.

Moreover, many explosion-proof devices can only receive explosion impact from one side and cannot achieve two-way triggering.

Utility Model Content

The utility model aims at the deficiencies of the prior art and provides a piston-triggered two-way-triggered one-way-erupting explosion-proof device for mining.

The utility model is realized through the following technical scheme, and provides a piston-triggered two-way triggered unidirectional eruption explosion-proof device for mining, including a transmission rod, a high-pressure gas storage bin and a powder storage bin, wherein one end of the high-pressure gas storage bin away from the powder storage bin is fixedly connected to an outer cylinder body, a first connecting hole is connected between the high-pressure gas storage bin and the powder storage bin, a second connecting hole is connected between the outer cylinder body and the high-pressure gas storage bin, a connecting sleeve passing through the first connecting hole and the second connecting hole is arranged in the high-pressure gas storage bin, the transmission rod passes through the outer cylinder body, the connecting sleeve and the powder storage bin, and receiving plates are fixedly connected to both ends of the transmission rod, and the A first piston adapted to the first connecting hole, a second piston adapted to the second connecting hole, and a cylinder piston adapted to the outer cylinder body are fixedly connected to the connecting sleeve, the cylinder piston and the outer cylinder body constitute a piston chamber, an air inlet connected to the high-pressure air storage bin is opened on the connecting sleeve, a trigger piston located at the air inlet is fixedly connected to the transmission rod, and a connecting air channel connecting the outer ring of the trigger piston and the piston chamber is opened in the transmission rod. When the transmission rod slides toward the powder storage bin, the trigger piston avoids the air inlet so that the air inlet is connected to the piston chamber. When the transmission rod slides in the opposite direction, the air inlet is connected to the piston chamber through the connecting air channel.

In this solution, after the explosion occurs, the shock wave impact receiving part drives the transmission rod to move axially. When the transmission rod drives the trigger piston to slide toward the powder storage bin, the trigger piston avoids the air inlet so that the air inlet is connected to the piston cavity, thereby connecting the piston cavity with the high-pressure gas storage bin. The high-pressure gas in the high-pressure gas storage bin enters the piston cavity. The expansion of the piston cavity drives the cylinder piston to move axially, thereby causing the first piston to escape from the first connecting hole. The first connecting hole connects the high-pressure gas storage bin and the powder storage bin. Therefore, the high-pressure gas in the high-pressure gas storage bin enters the powder storage bin to spray out the internal fire extinguishing powder. When the transmission rod drives the trigger piston to slide in the direction away from the powder storage bin, the air inlet is connected to the piston cavity through the connecting airway, thereby also connecting the piston cavity with the high-pressure gas storage bin, and also achieving triggering.

As an optimization, the communicating air passage includes an inner chamber disposed in the transmission rod, the inner chamber is connected to the piston cavity through the second air hole, the inner chamber is connected to the outer ring of the trigger piston through the first air hole, and the first air hole is disposed on the side of the air inlet away from the cylinder piston. In this solution, the inner chamber realizes the communication between the first air hole and the second air hole, and the first air hole is disposed on the side of the air inlet away from the cylinder piston, so when the cylinder piston moves toward the piston cavity, the communication between the first air hole and the air inlet can be realized.

As an optimization, the side of the cylinder piston away from the high-pressure gas storage tank and the outer cylinder body form a piston cavity, and the connecting sleeve and the transmission rod form an annular cavity connected to the piston cavity, and the annular cavity is located on the side of the trigger piston close to the cylinder piston. In this solution, the connecting sleeve and the transmission rod form an annular cavity connected to the piston cavity, that is, the inner diameter of the connecting sleeve is larger than the outer diameter of the transmission rod, so when the trigger piston avoids the air inlet, the air inlet and the piston cavity can be connected.

As an optimization, an exhaust port is provided on the outer cylinder body at the side of the cylinder piston away from the piston chamber. The exhaust port in this solution is for realizing the movement of the cylinder piston.

As an optimization, the outer cylinder body is threadedly connected with a locking bolt fastened to the outer ring of the cylinder piston. The locking bolt in this solution realizes the fastening of the cylinder piston during the transportation and commissioning of the flameproof device.

As an optimization, the outer diameter of the second piston is equal to the outer diameter of the first piston. Therefore, the high-pressure gas in the high-pressure gas storage bin will not drive the connecting sleeve to move axially.

As an optimization, the receiving plate is circular, elliptical or polygonal. In this solution, the explosion impact is received by a circular, elliptical or polygonal receiving plate.

As an optimization, an isolation sleeve is fixedly connected in the powder storage bin, and the transfer rod passes through the isolation sleeve. The isolation sleeve in this solution plays the role of isolating the transfer rod and the fire extinguishing powder.

The beneficial effects of the utility model are as follows: the utility model is a piston-triggered two-way triggered unidirectional eruption mine explosion-proof device, both ends of the transmission rod are fixedly connected with receiving plates, and the explosion impacts on both sides are received by the receiving plates. When the explosion impact on either side drives the transmission rod to move axially, the trigger piston on the transmission rod can move axially, thereby realizing the introduction of high-pressure gas in the high-pressure gas storage bin into the piston cavity, and finally realizing the triggering of the explosion-proof device. In this application, the various components are not subjected to stress in the non-triggered state, so there is no long-term deformation problem, so the operation is stable and the triggering is sensitive, which can effectively ensure the explosion isolation and explosion suppression in the mine.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the internal structure of the utility model;

FIG2 is a partial enlarged view of the second connecting hole of the utility model;

FIG3 is a partial enlarged view of the second connecting hole after the transmission rod of the utility model moves to the right;

FIG4 is a partial enlarged view of the second connecting hole after the transmission rod of the utility model moves to the left;

FIG5 is a partial enlarged view of the first connecting hole of the utility model;

As shown in the figure:

1. High-pressure gas storage bin, 2. Powder storage bin, 3. First connecting hole, 4. Second connecting hole, 5. Connecting sleeve, 6. First piston, 7. Second piston, 8. Cylinder piston, 9. Air inlet, 10. Transfer rod, 11. Trigger piston, 12. Outer cylinder, 13. Inner chamber, 14. First air hole, 15. Second air hole, 16. Locking bolt, 17. Receiving plate, 18. Exhaust port, 19. Isolation sleeve.

DETAILED DESCRIPTION

In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

As shown in Figures 1 to 5, a piston-triggered two-way triggering unidirectional eruption explosion-proof device for mining of the utility model comprises a transmission rod 10, a high-pressure gas storage bin 1 and a powder storage bin 2, wherein one end of the high-pressure gas storage bin 1 away from the powder storage bin 2 is fixedly connected to an outer cylinder 12, and the transmission rod 10 passes through the outer cylinder 12, the high-pressure gas storage bin 1 and the powder storage bin 2, and both ends of the transmission rod 10 are fixedly connected to receiving plates 17, and the receiving plates 17 are circular, elliptical or polygonal. The receiving plates 17 are used to receive the impact of the explosion, thereby driving the transmission rod 10 to move axially.

The powder storage bin 2 is opened at one end away from the high-pressure gas storage bin 1 and is covered with a sealing film. The powder storage bin 2 is filled with fire extinguishing powder. An isolation sleeve 19 is fixedly connected to the powder storage bin 2. The transfer rod 10 passes through the isolation sleeve 19, thereby isolating the transfer rod and the fire extinguishing powder through the isolation sleeve.

The outer cylinder 12 is a cylindrical hollow cylinder, coaxial with the high-pressure gas storage bin 1, one end of which is fixed to the end face of the high-pressure gas storage bin 1 and forms a closed cavity. A first connecting hole 3 is connected between the high-pressure gas storage bin 1 and the powder storage bin 2, and a second connecting hole 4 is connected between the outer cylinder 12 and the high-pressure gas storage bin 1. The inner diameter of the first connecting hole 3 is equal to the inner diameter of the second connecting hole 4.

A connecting sleeve 5 passing through the first connecting hole 3 and the second connecting hole 4 is provided in the high-pressure gas storage bin 1, and the transmission rod 10 passes through the outer cylinder body 12, the connecting sleeve 5 and the powder storage bin 2. In this embodiment, the transmission rod 10, the connecting sleeve 5, the high-pressure gas storage bin 1 and the outer cylinder body 12 are all coaxially arranged, and the connecting sleeve 5 is fixedly connected with a first piston 6 adapted to the first connecting hole 3, a second piston 7 adapted to the second connecting hole 4 and a cylinder piston 8 adapted to the outer cylinder body 12. The first piston 6 seals the first connecting hole 3 and moves axially, the second piston 7 seals the second connecting hole 4 and moves axially, and the cylinder piston 8 fits with the inner ring of the outer cylinder body 12 and moves axially.

The outer diameter of the second piston 7 is equal to the outer diameter of the first piston 6, so the high-pressure gas in the high-pressure gas storage tank will not drive the connecting sleeve to move axially. The length of the second piston 7 is greater than the length of the first piston 6, so after the first piston is removed from the first connecting hole, the second piston is still located in the second connecting hole.

The cylinder piston 8 and the outer cylinder 12 form a piston cavity. In this embodiment, the side of the cylinder piston 8 away from the high-pressure gas storage tank 1 and the outer cylinder 12 form a piston cavity, that is, the left side of the cylinder piston 8 in Figures 1-4 is the piston cavity. An exhaust port 18 is provided on the outer cylinder 12 of the cylinder piston 8 away from the piston cavity. The exhaust port 18 is provided on the right side of the piston cavity in Figures 1-4, so that the right cavity is connected to the outside when the cylinder piston 8 moves left and right. The outer cylinder 12 is threadedly connected with a locking bolt 16 fastened to the outer ring of the cylinder piston 8. The tightening bolt is used to fasten the cylinder piston during the transportation and commissioning of the explosion-proof device to prevent accidental triggering.

The inner diameter of the connecting sleeve 5 is larger than the outer diameter of the transmission rod 10 , so the connecting sleeve 5 and the transmission rod 10 form an annular cavity connected to the piston cavity, and the annular cavity is located on the side of the trigger piston 11 close to the cylinder piston 8 .

The connecting sleeve 5 is provided with an air inlet 9 connected to the high-pressure air storage tank 1. The air inlet 9 is located on the right side of the second piston 7. A trigger piston 11 located at the air inlet 9 is fixedly connected to the transmission rod 10. The trigger piston 11 blocks the air inlet 9 when the explosion-proof device is not triggered.

A connecting air passage connecting the outer ring of the trigger piston 11 and the piston cavity is opened in the transmission rod 10. In this embodiment, the connecting air passage includes an inner chamber 13 arranged in the transmission rod 10. The inner chamber 13 is connected to the piston cavity through a second air hole 15. The inner chamber 13 is connected to the outer ring of the trigger piston 11 through a first air hole 14. The first air hole 14 is arranged on the side of the air inlet 9 away from the cylinder piston 8.

When the transmission rod 10 slides toward the powder storage bin 2, the piston 11 is triggered to avoid the air inlet 9 so that the air inlet 9 is connected with the piston cavity. When the transmission rod 10 slides in the opposite direction, the air inlet 9 is connected with the piston cavity through the connecting air channel.

The use of the utility model:

After the explosion, the shock wave generated by the explosion impacts the receiving plate 19, thereby driving the transmission rod 10 to move axially. When the transmission rod 10 drives the trigger piston 11 to slide toward the powder storage bin 2, the trigger piston 11 avoids the air inlet 9 so that the air inlet 9 is connected to the piston cavity, as shown in Figure 3, thereby connecting the piston cavity with the high-pressure gas storage bin 1.

If the transmission rod 10 drives the trigger piston 11 to slide away from the powder storage bin 2, the air inlet 9 is connected to the piston cavity through the connecting air channel, as shown in FIG. 4, thereby also connecting the piston cavity to the high-pressure gas storage bin 1.

After the piston cavity is connected with the high-pressure gas storage bin 1, the high-pressure gas in the high-pressure gas storage bin 1 enters the piston cavity, and the expansion of the piston cavity drives the cylinder piston 8 to move axially (to the right in the figure in this embodiment), thereby causing the first piston 6 to disengage from the first connecting hole 3. The first connecting hole connects the high-pressure gas storage bin 1 and the powder storage bin 2, so that the high-pressure gas in the high-pressure gas storage bin 1 enters the powder storage bin 2 to spray out the internal fire extinguishing powder.

Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims (8)

1. A piston-triggered two-way triggered one-way eruption explosion-proof device for mining, comprising a transmission rod (10), a high-pressure gas storage bin (1) and a powder storage bin (2), characterized in that: the end of the high-pressure gas storage bin (1) away from the powder storage bin (2) is fixedly connected to an outer cylinder (12), a first connecting hole (3) is communicated between the high-pressure gas storage bin (1) and the powder storage bin (2), a second connecting hole (4) is communicated between the outer cylinder (12) and the high-pressure gas storage bin (1), a connecting sleeve (5) passing through the first connecting hole (3) and the second connecting hole (4) is provided in the high-pressure gas storage bin (1), the transmission rod (10) passes through the outer cylinder (12), the connecting sleeve (5) and the powder storage bin (2), both ends of the transmission rod (10) are fixedly connected to receiving plates (17), and the connecting sleeve (5) is fixedly connected to A first piston (6) adapted to the first connecting hole (3), a second piston (7) adapted to the second connecting hole (4), and a cylinder piston (8) adapted to the outer cylinder (12); the cylinder piston (8) and the outer cylinder (12) form a piston chamber; an air inlet (9) connected to the high-pressure air storage bin (1) is formed on the connecting sleeve (5); a trigger piston (11) located at the air inlet (9) is fixedly connected to the transmission rod (10); a connecting air passage connecting the outer ring of the trigger piston (11) and the piston chamber is formed in the transmission rod (10); when the transmission rod (10) slides in the direction of the powder storage bin (2), the trigger piston (11) avoids the air inlet (9) so that the air inlet (9) is connected to the piston chamber; when the transmission rod (10) slides in the opposite direction, the air inlet (9) is connected to the piston chamber through the connecting air passage. 2. A piston-triggered bidirectionally triggered unidirectionally erupting explosion-proof device for mining according to claim 1, characterized in that: the communicating air passage comprises an inner chamber (13) arranged in the transmission rod (10), the inner chamber (13) is connected to the piston chamber through the second air hole (15), the inner chamber (13) is connected to the outer ring of the trigger piston (11) through the first air hole (14), and the first air hole (14) is arranged on the side of the air inlet (9) away from the cylinder piston (8). 3. A piston-triggered bidirectionally triggered unidirectionally erupting explosion-proof device for mining according to claim 1, characterized in that: the side of the cylinder piston (8) away from the high-pressure gas storage bin (1) and the outer cylinder (12) form a piston cavity, and the connecting sleeve (5) and the transmission rod (10) form an annular cavity connected to the piston cavity, and the annular cavity is located on the side of the trigger piston (11) close to the cylinder piston (8). 4. A piston-triggered two-way triggered one-way eruption explosion-proof device for mining according to claim 1, characterized in that an exhaust port (18) is opened on the outer cylinder body (12) of the cylinder piston (8) away from the piston chamber. 5. A piston-triggered two-way triggered one-way eruption explosion-proof device for mining according to claim 1, characterized in that: a locking bolt (16) is threadedly connected to the outer ring of the cylinder piston (8) on the outer cylinder body (12). 6. A piston-triggered two-way triggered one-way eruption explosion-proof device for mining according to claim 1, characterized in that the outer diameter of the second piston (7) is equal to the outer diameter of the first piston (6). 7. A piston-triggered bidirectionally triggered unidirectionally erupting explosion-proof device for mining according to claim 1, characterized in that: the receiving plate (17) is circular, elliptical or polygonal. 8. A piston-triggered two-way triggered one-way eruption explosion-proof device for mining according to claim 1, characterized in that an isolation sleeve (19) is fixedly connected to the powder storage bin (2), and the transmission rod (10) passes through the isolation sleeve (19).