Explosion-proof well lid of mine ventilation well

Abstract

The utility model belongs to the technical field of anti-explosion well lids, and discloses a mining ventilation well anti-explosion well lid which comprises a ventilation well, an anti-explosion well lid body is installed at the upper end of the ventilation well, pull blocks are installed on the front face and the back face of the upper end of the anti-explosion well lid body, and a controller is arranged on the lower right portion of the upper end of the ventilation well. A water tank is arranged in the center of the upper end of the ventilation shaft, a conveying pump is arranged at the upper end of the water tank, a connecting pipe is installed at the upper end of the conveying pump, a closed ring is installed at the lower end of the water tank, and first sliding rods are installed on the two sides of the lower end of the closed ring; the explosion-proof well lid has the advantages that when the surface temperature of the water tank is too low or too high, the water tank can be automatically heated and cooled, the functionality of the explosion-proof well lid of the mining ventilation shaft is improved, the explosion-proof well lid of the mining ventilation shaft can have the buffering and damping functions when the interior explodes, and the explosion-proof well lid of the mining ventilation shaft is convenient to use. And the service life of the anti-explosion well lid is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof manhole covers, in particular to an explosion-proof manhole cover for a mine ventilation shaft. Background Art

[0002] The explosion-proof manhole cover for mine ventilation shaft is a special manhole cover designed to ensure the safety of mine ventilation system. The explosion-proof manhole cover for mine ventilation shaft is mainly used to block the inlet of mine ventilation system to prevent the combustible gas in the mine ventilation system from entering the mine, thereby greatly reducing the occurrence of coal mine accidents.

[0003] A Chinese patent document with announcement number CN217501729U discloses an explosion-proof manhole cover device for mine ventilation. Through limiting columns, when gas explodes inside the mine, when the shock wave generated by the explosion reaches the manhole cover along the ventilation shaft, the shock wave will be dispersed by the inclined part of the lower end of the manhole cover and then released through the pores. However, most of the shock waves will still lift the manhole cover up. As the manhole cover is lifted up, a large amount of shock waves are released, and the manhole cover is still directly above the ventilation shaft due to the action of limiting columns and blocking blocks; however, the device does not have cooling and heating measures, resulting in that when the surface temperature of the explosion-proof well of the mine ventilation shaft is too high, the aging process of the manhole cover material will be accelerated, reducing its service life and explosion-proof performance. When the temperature is too low, it is easy to cause the manhole cover to burst, posing certain safety hazards. For this reason, we propose an explosion-proof manhole cover for mine ventilation shaft. Utility Model Content

[0004] In order to solve or partially solve the technical problems existing in the background technology, the utility model proposes an explosion-proof manhole cover for a mine ventilation shaft.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mine ventilation shaft explosion-proof manhole cover, comprising a ventilation shaft, wherein an explosion-proof manhole cover is installed at the upper end of the ventilation shaft, pull blocks are installed on the front and back sides of the upper end of the explosion-proof manhole cover, a controller is arranged at the lower right corner of the upper end of the ventilation shaft, a water tank is arranged at the center position of the upper end of the ventilation shaft, a delivery pump is arranged at the upper end of the water tank, a connecting pipe is installed at the upper end of the delivery pump, a closed ring is installed at the lower end of the water tank, a first slide bar is installed on both sides of the lower end of the closed ring, a first slide cylinder is installed on the outer side wall of the first slide bar, a connecting plate is installed at the lower end of the first slide cylinder, an inclined cone is installed at the lower end of the inner side of the water tank, and a contact thermometer is arranged at the lower end of the water tank.

[0007] Preferably, the lower end of the first sliding rod is elastically connected to a first spring, and the first spring is located inside the first sliding cylinder.

[0008] Preferably, a drainage hole is provided on the surface of the lower end of the water tank, and a heating plate is fixedly connected to the inner side of the water tank.

[0009] Preferably, positioning bolts are provided through both sides of the upper end of the explosion-proof manhole cover, and the positioning bolts are threadedly connected to the explosion-proof manhole cover.

[0010] Preferably, a second slide cylinder is installed on the back and front sides of the connecting plate, a shock-absorbing plate is installed on the lower end of the second slide cylinder, a slide plate is installed on the inner side of the shock-absorbing plate, a shock-absorbing arc plate is installed on the outer side wall of the slide plate, a rotating block is installed on the lower end of the connecting plate, and a rotating plate is installed on the inner side of the rotating block.

[0011] Preferably, the inner side of the second slide cylinder is elastically connected with a second spring, and the inner side of the second spring is sleeved and connected with a damper.

[0012] Preferably, a slide groove is provided at the position where the shock-absorbing arc plate contacts the ventilation shaft, and the shock-absorbing arc plate is slidably connected to the slide groove.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The mine ventilation shaft explosion-proof manhole cover connects the connecting pipe with the water pipe, and then when the contact thermometer detects that the surface temperature of the water tank is high, the controller and the delivery pump cooperate to make the delivery pump inject cold water into the water tank through the connecting pipe, so that the cold water inside the water tank cools the water tank, and when the amount of water is too much, the closed ring will be squeezed through the drainage hole, so that the sealing of the closed ring to the drainage hole disappears, and the water inside the water tank flows out through the drainage hole, and stops when the contact thermometer detects that the surface temperature of the water tank is normal, and with the cooperation of the first slide bar, the first slide cylinder and the inclined cone, the water inside the water tank is discharged, and the closed ring can automatically close the drainage hole, and then through the cooperation of the heating plate, the water tank can be heated when the surface temperature of the water tank is low, so that the mine ventilation shaft explosion-proof manhole cover can automatically heat and cool the water tank when the surface temperature of the water tank is too cold or overheated, thereby improving the functionality of the mine ventilation shaft explosion-proof manhole cover.

[0015] 2. The mine ventilation shaft explosion-proof manhole cover will squeeze the shock-absorbing plate and the slide plate when an explosion occurs inside the ventilation shaft, so that the shock-absorbing plate will slide inside the second slide cylinder, and the shock-absorbing arc plate will move with the shock-absorbing plate, and through the cooperation of the rotating plate and the rotating block, the shock-absorbing arc plate will be driven to move to both sides, so that the shock-absorbing arc plate can slide inside the ventilation shaft through the cooperation of the slide groove, and be stuck in the ventilation shaft through the slide groove, so that the impact on the explosion-proof manhole cover is reduced, and through the cooperation of the slide plate, the movement of the shock-absorbing arc plate is more stable, and then with the cooperation of the second spring and the damper, the extrusion force generated by the explosion will be buffered and shock-absorbed, so that the mine ventilation shaft explosion-proof manhole cover can perform the function of buffering and shock-absorbing when there is an internal explosion, thereby improving the service life of the explosion-proof manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model explosion-proof manhole cover for mine ventilation shaft;

[0017] Figure 2 This is a cross-sectional view of the utility model explosion-proof manhole cover for mine ventilation shaft;

[0018] Figure 3 It is a cross-sectional view of the water tank in the utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the second slide cylinder and the second spring in the utility model;

[0020] In the figure:

[0021] 1. Ventilation shaft; 2. Explosion-proof manhole cover; 3. Pull block; 4. Positioning bolt; 5. Controller; 6. Water tank; 7. Delivery pump; 8. Connecting pipe; 9. Closing ring; 10. First slide bar; 11. First slide cylinder; 12. Connecting plate; 13. Inclined cone; 14. Drain hole; 15. Heating plate; 16. Contact thermometer; 17. First spring; 18. Second slide cylinder; 19. Second spring; 20. Damper; 21. Shock-absorbing plate; 22. Slide plate; 23. Shock-absorbing arc plate; 24. Rotating block; 25. Rotating plate; 26. Slide groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1

[0025] See also Figure 1-4 The utility model provides a technical solution: an explosion-proof manhole cover for a mine ventilation shaft, comprising a ventilation shaft 1, an explosion-proof manhole cover 2 is installed at the upper end of the ventilation shaft 1, and pull blocks 3 are installed on the front and back of the upper end of the explosion-proof manhole cover 2, a controller 5 is arranged at the lower right bottom of the upper end of the ventilation shaft 1, a water tank 6 is arranged at the center position of the upper end of the ventilation shaft 1, a delivery pump 7 is arranged at the upper end of the water tank 6, a connecting pipe 8 is installed at the upper end of the delivery pump 7, a closing ring 9 is installed at the lower end of the water tank 6, a first slide bar 10 is installed on both sides of the lower end of the closing ring 9, a first slide cylinder 11 is installed on the outer side wall of the first slide bar 10, a connecting plate 12 is installed at the lower end of the first slide cylinder 11, an inclined cone 13 is installed at the lower end of the inner side of the water tank 6, and a contact thermometer 16 is arranged at the lower end of the water tank 6.

[0026] The lower end of the first sliding rod 10 is elastically connected to a first spring 17 , and the first spring 17 is located inside the first sliding cylinder 11 .

[0027] A drainage hole 14 is provided on the surface of the lower end of the water tank 6 , and a heating plate 15 is fixedly connected to the inner side of the water tank 6 .

[0028] Positioning bolts 4 are provided through both sides of the upper end of the explosion-proof manhole cover 2 , and the positioning bolts 4 are threadedly connected to the explosion-proof manhole cover 2 .

[0029] When in use, by connecting the connecting pipe 8 to the water pipe, when the contact thermometer 16 detects that the surface temperature of the water tank 6 is high, the contact thermometer 16 will transmit the data to the controller 5, and start the delivery pump 7 through the controller 5, so that the delivery pump 7 draws out cold water through the connecting pipe 8 and injects it into the water tank 6, so that the cold water inside the water tank 6 cools the water tank 6, and when there is too much water inside the water tank 6, the water will move around under the action of the inclined cone 13, and squeeze the closed ring 9 through the drainage hole 14. At this time, the closed ring 9 will squeeze the first slide bar 10 and make the first slide bar 10 slide inside the first slide cylinder 11. At the same time, the first slide bar 10 will also squeeze the inclined cone 13, so that the closed ring 9 will squeeze the drainage hole 14. The closure of the water hole 14 disappears, and the water inside the water tank 6 will flow out through the drainage hole 14. When the contact thermometer 16 detects that the surface temperature of the water tank 6 is normal, it stops, and then the first slide bar 10 will slide again inside the first slide cylinder 11 under the elasticity of the inclined cone 13, and push the closing ring 9 to close the drainage hole 14. Then, when the contact thermometer 16 detects that the surface temperature of the water tank 6 is low, the connecting pipe 8 will inject a small amount of water into the water tank 6, and start the heating plate 15 to heat the water inside the water tank 6. After the temperature returns to normal, it stops, so that the explosion-proof manhole cover for the mine ventilation shaft can automatically heat and cool the water tank 6 when the surface temperature of the water tank 6 is too cold or too hot, thereby improving the functionality of the explosion-proof manhole cover for the mine ventilation shaft.

[0030] Example 2

[0031] See also Figure 1-4 The utility model provides a technical solution: an explosion-proof manhole cover for a mine ventilation shaft, a second slide cylinder 18 is installed on the back and front of a connecting plate 12, a shock-absorbing plate 21 is installed on the lower end of the second slide cylinder 18, a slide plate 22 is installed on the inner side of the shock-absorbing plate 21, a shock-absorbing arc plate 23 is installed on the outer side wall of the slide plate 22, a rotating block 24 is installed on the lower end of the connecting plate 12, and a rotating plate 25 is installed on the inner side of the rotating block 24.

[0032] The inner side of the second slide cylinder 18 is elastically connected with a second spring 19 , and the inner side of the second spring 19 is sleeved with a damper 20 .

[0033] A slide groove 26 is provided at the position where the shock-absorbing arc plate 23 contacts the ventilation shaft 1 , and the shock-absorbing arc plate 23 is slidably connected to the slide groove 26 .

[0034] Specifically, when an explosion occurs inside the ventilation shaft 1, the shock absorbing plate 21 and the slide plate 22 will be squeezed, so that the shock absorbing plate 21 will slide inside the second slide cylinder 18, and the shock absorbing arc plate 23 will move with the shock absorbing plate 21. At this time, the shock absorbing arc plate 23 will squeeze the rotating plate 25, so that the rotating plate 25 rotates outward inside the rotating block 24, so that the shock absorbing arc plate 23 moves to both sides and fits with the inner wall of the ventilation shaft 1, and the shock absorbing arc plate 23 slides inside the ventilation shaft 1 through the slide groove 26 and is stuck in the ventilation shaft 1 through the slide groove 26. Inside the well 1, the impact on the explosion-proof manhole cover 2 is reduced, and when the shock-absorbing arc plate 23 moves toward the outer wall, it will pull the slide plate 22 to slide inside the shock-absorbing plate 21, so that the movement of the shock-absorbing arc plate 23 is more stable, and then when the shock-absorbing plate 21 rises, it will squeeze the second spring 19 and the damper 20, and then the elasticity of the second spring 19 and the action of the damper 20 will buffer and shock-absorb the squeezing force generated by the explosion, so that the explosion-proof manhole cover for the mine ventilation shaft can perform the function of buffering and shock-absorbing when there is an internal explosion, thereby improving the service life of the explosion-proof manhole cover 2.

[0035] Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. An explosion-proof manhole cover for a mine ventilation shaft, comprising a ventilation shaft, characterized in that: An explosion-proof manhole cover is installed at the upper end of the ventilation shaft, and pull blocks are installed on the front and back sides of the upper end of the explosion-proof manhole cover. A controller is arranged at the lower right corner of the upper end of the ventilation shaft, a water tank is arranged at the center position of the upper end of the ventilation shaft, a delivery pump is arranged at the upper end of the water tank, a connecting pipe is installed at the upper end of the delivery pump, a closed ring is installed at the lower end of the water tank, a first sliding rod is installed on both sides of the lower end of the closed ring, a first sliding cylinder is installed on the outer side wall of the first sliding rod, a connecting plate is installed at the lower end of the first sliding cylinder, an inclined cone is installed at the lower end of the inner side of the water tank, and a contact thermometer is arranged at the lower end of the water tank.

2. The explosion-proof manhole cover for mine ventilation shaft according to claim 1, characterized in that: The lower end of the first sliding rod is elastically connected to a first spring, and the first spring is located inside the first sliding cylinder.

3. The explosion-proof manhole cover for mine ventilation shaft according to claim 1, characterized in that: A drainage hole is provided on the surface of the lower end of the water tank, and a heating plate is fixedly connected to the inner side of the water tank.

4. The explosion-proof manhole cover for mine ventilation shaft according to claim 1, characterized in that: Positioning bolts are provided through both sides of the upper end of the explosion-proof manhole cover, and the positioning bolts are threadedly connected to the explosion-proof manhole cover.

5. The explosion-proof manhole cover for mine ventilation shaft according to claim 1, characterized in that: A second slide cylinder is installed on the back and front of the connecting plate, a shock-absorbing plate is installed on the lower end of the second slide cylinder, a slide plate is installed on the inner side of the shock-absorbing plate, a shock-absorbing arc plate is installed on the outer side wall of the slide plate, a rotating block is installed on the lower end of the connecting plate, and a rotating plate is installed on the inner side of the rotating block.

6. The explosion-proof manhole cover for mine ventilation shaft according to claim 5, characterized in that: The inner side of the second slide cylinder is elastically connected with a second spring, and the inner side of the second spring is sleeved and connected with a damper.

7. The explosion-proof manhole cover for mine ventilation shaft according to claim 5, characterized in that: A sliding groove is provided at the position where the shock-absorbing arc plate contacts the ventilation shaft, and the shock-absorbing arc plate is slidably connected with the sliding groove.

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