CN111561349B - Mining area is from compound explosion vent for well immediately airing exhaust - Google Patents
Mining area is from compound explosion vent for well immediately airing exhaust Download PDFInfo
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- CN111561349B CN111561349B CN202010550043.2A CN202010550043A CN111561349B CN 111561349 B CN111561349 B CN 111561349B CN 202010550043 A CN202010550043 A CN 202010550043A CN 111561349 B CN111561349 B CN 111561349B
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- 238000004880 explosion Methods 0.000 title claims abstract description 107
- 238000005065 mining Methods 0.000 title claims abstract description 13
- 150000001875 compounds Chemical class 0.000 title claims description 3
- 230000008093 supporting effect Effects 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000035939 shock Effects 0.000 abstract description 95
- 238000000034 method Methods 0.000 abstract description 22
- 239000000428 dust Substances 0.000 abstract description 11
- 230000005484 gravity Effects 0.000 abstract description 7
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 239000011295 pitch Substances 0.000 abstract description 5
- 239000002341 toxic gas Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 11
- 235000017491 Bambusa tulda Nutrition 0.000 description 11
- 241001330002 Bambuseae Species 0.000 description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 11
- 239000011425 bamboo Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 230000006378 damage Effects 0.000 description 8
- 231100000614 poison Toxicity 0.000 description 8
- 230000007096 poisonous effect Effects 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 208000014674 injury Diseases 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/16—Shaft covers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention belongs to the technical field of explosion vents, and particularly relates to a self-resetting explosion vent for a vertical exhaust well in a mining area, which comprises a base, an explosion-proof barrel, a mounting plate, a limiting plate, an anti-collision block, a sliding barrel, an anti-impact plate, a rotating barrel, a supporting shaft, a first spring and a balancing weight, wherein the base is provided with a first spring and a second spring; according to the invention, shock waves generated by explosion are matched with the spiral grooves with large screw pitches to realize automatic rotation and lifting of the rotary cylinder, so that alignment of the first through hole and the second through hole is automatically realized, and then the shock waves are automatically and quickly scattered after the explosion occurs; in addition, in the process, the shock wave generated in the well needs to overcome the elasticity of the first spring and the gravity of the counterweight block, so that the shock wave generated by explosion is weakened to a certain extent, and further the peripheral environment cannot be greatly vibrated; utilize simultaneously the bounce of a spring and the dead weight of balancing weight to stagger No. two through-holes and a through-hole, and then realize the self-sealing of explosion vent, and then reduce the diffusion of the toxic gas in the well and dust.
Description
Technical Field
The invention belongs to the technical field of explosion vents, and particularly relates to a self-resetting explosion vent for a vertical air exhaust well in a mining area.
Background
The explosion vent is a special sealing well cover arranged on an air exhaust well head of a main ventilator of the coal mine, and the function of the explosion vent mainly comprises the following aspects: (1) during normal ventilation, the air tightness needs to be kept, the air tightness is used for isolating underground airflow from the ground atmosphere, the short circuit of the airflow is prevented, and the normal ventilation system is ensured. (2) When gas or coal dust explosion accidents happen underground, the explosion-proof door is opened by the blast airflow shock wave, the blast airflow is directly discharged to the ground atmosphere, the pressure of the airflow in the mine is reduced, the pressure relief effect is achieved, and the main ventilator is prevented from being damaged due to the impact of the blast airflow. (3) When a fire disaster or toxic gas exists in the underground air inlet roadway, in order to prevent flame and toxic gas from entering a mining area to harm the life of miners, the anti-wind fire extinguishing is carried out in time, the explosion door needs to be pressed in time at the moment, and the positive pressure mode is adopted to forcibly implement the anti-wind to the underground.
When the existing mine explosion-proof door is used, the explosion-proof door needs to be closed manually, so that the timeliness of closing the explosion-proof door cannot be accurately controlled, and the time for closing the explosion-proof door needs to be strictly controlled, so that the explosion-proof door cannot be accurately controlled manually in specific implementation, and further, the risk of scattering toxic gas and smoke dust in a mine exists; and the shock resistance of current explosion vent and the ability of absorbing the impact force of explosion are comparatively weak, and then lead to the explosion vent to be broken away by the violence in the twinkling of an eye of explosion, and then have caused very big shock to the surrounding environment of explosion vent, also produced very big impact force to explosion vent self simultaneously, and then reduced explosion vent's life.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a self-resetting explosion-proof door for a vertical air exhaust well in a mining area. The invention is mainly used for solving the problems that the existing mine explosion-proof door needs to be manually closed when in use, so that the timeliness of closing the explosion-proof door cannot be accurately controlled, and further the risk of scattering toxic gas and smoke dust in a mine is caused; and the shock resistance of current explosion vent and the ability of absorbing the impact force of explosion are comparatively weak, and then lead to the explosion vent to be broken away by the violence in the twinkling of an eye of the explosion, and then have caused very big shock to the surrounding environment of explosion vent.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a self-resetting explosion-proof door for a vertical exhaust well in a mining area, which comprises a base, an explosion-proof barrel, a mounting plate, a limiting plate, an anti-collision block, a sliding barrel, an anti-impact plate, a rotating barrel, a supporting shaft, a first spring and a balancing weight, wherein the anti-collision block is arranged on the base; the base is fixedly connected to an air exhaust wellhead of the main coal mine ventilator; the explosion-proof barrel is arranged above the base; the lower end of the explosion-proof barrel is fixedly connected with the mounting plate; the mounting plate is fixedly connected to the base through a screw; first through holes are uniformly arranged on the middle cylindrical surface of the explosion-proof barrel at intervals along the circumferential direction; the inner wall of the explosion-proof barrel is fixedly connected with the limiting plate; the limiting plate is arranged above the first through hole; the lower surface of the limiting plate is provided with the anti-collision block along the edge; the sliding cylinder is arranged in the explosion-proof barrel; the sliding cylinder is in clearance fit with the explosion-proof barrel; the cylindrical surface of the sliding cylinder is uniformly provided with a second through hole at intervals along the circumferential direction; the second through holes and the first through holes are arranged in a staggered mode in the circumferential direction; the upper end of the sliding cylinder is fixedly connected with the impact-resistant plate; the counterweight block is arranged below the impact-resistant plate; the counterweight block is connected to the lower surface of the impact-resistant plate; the upper surface of the impact-resistant plate is fixedly connected with the lower end of the rotary cylinder; two spiral grooves are symmetrically arranged on the inner cylindrical surface of the rotary cylinder along the center; the supporting shaft is arranged in the rotating cylinder; the supporting shaft is in clearance fit with the rotating cylinder; the lower end of the supporting shaft is provided with a limiting shaft; two ends of the limiting shaft respectively slide in the two spiral grooves; the upper end of the supporting shaft is fixedly connected to the inner wall of the upper end of the explosion-proof barrel; the first spring is sleeved on the supporting shaft; one end of the first spring is abutted against the step surface at the upper end of the supporting shaft; the other end of the first spring abuts against the upper end face of the rotary cylinder.
When the explosion-proof device works, when explosion occurs, shock waves are formed in a well due to explosion, so that the shock-proof plate generates impact force, the shock-proof plate pushes the rotary cylinder to move upwards, the limit shaft at the lower end of the support shaft slides along the spiral groove on the inner wall of the rotary cylinder, so that the rotary cylinder rotates in the circumferential direction in the lifting process, the rotary cylinder compresses the first spring above the rotary cylinder, meanwhile, in the rotating and lifting process of the shock-proof plate, the shock-proof plate drives the sliding cylinder to rotate and lift along the inner wall of the explosion-proof barrel, after the upper surface of the shock-proof plate contacts with the collision-proof block, the shock-proof plate and the sliding cylinder stop lifting, so that the second through hole in the sliding cylinder is aligned with the first through hole in the explosion-proof barrel, the shock waves generated in the well are dissipated from a channel formed by the first through hole and the second through hole, and the shock waves generated in the well need to overcome the elasticity of the first spring and the gravity of the counterweight block in the process, further, the shock wave generated by explosion is weakened to a certain extent, so that the shock wave cannot generate great shock to the surrounding environment when being scattered from a channel formed by the first through hole and the second through hole, and the safety of the explosion door is improved; meanwhile, shock waves generated by explosion are matched with the helical grooves with large screw pitches to realize automatic rotation and lifting of the rotary cylinder, so that alignment of the first through hole and the second through hole is automatically realized, the shock waves are automatically and quickly scattered after the explosion occurs, the safety of the explosion door is further ensured, and a foundation is provided for automatic resetting of the explosion door; after the shock wave that the explosion produced scatters from the passageway that a through-hole and No. two through-holes formed, under the effect of the recoil of a spring and the dead weight of balancing weight, the sliding cylinder, board and rotatory decline of shocking resistance together rotate, after the lower extreme contact mounting panel of sliding cylinder, the sliding cylinder stops rotatory decline, and then realize that No. two through-holes and a through-hole stagger, and then realize explosion-proof door's sealed, and then realize need not artificial control, can be automatic and timely close explosion-proof door, and then reduce the diffusion of the poisonous gas in the well and dust, and then reduce the injury of poisonous gas and dust to the human body, the security of using explosion-proof door has further been improved.
Preferably, the counterweight block is in a conical structure; the conical surface of the balancing weight is an arc-shaped conical surface; the balancing weight is connected with the impact resisting plate through a steel wire rope.
Through setting the balancing weight to the circular cone structure, and set up the conical surface that the conical surface is the arcuation, and then make the shock wave that the interior explosion of well produced can disperse all around along the conical surface of arcuation on the balancing weight when assaulting the balancing weight, and then make the shock wave more smooth along No. two through-holes and the one through-hole of horizontal setting rush out, and then the shock wave that has reduced the explosion production carries out the frontal impact to the explosion vent, and then the injury that the shock wave led to the fact the explosion vent has been lower, and then the security of explosion vent self has been improved, and then the life of explosion vent has been improved.
Preferably, a conical spring is arranged between the balancing weight and the impact resisting plate; the section of the conical spring is rectangular, and the size of the rectangular in the horizontal direction is larger than that of the rectangular in the vertical direction; an annular rectangular groove is formed in the upper end face of the balancing weight; the lower end of the conical spring is placed in the annular rectangular groove, and the upper end of the conical spring is fixedly connected to the lower surface of the impact-resistant plate.
Through set up conical spring between balancing weight and the board that shocks resistance, and restricted conical spring and the removal that can not take place the horizontal direction between the balancing weight, again because conical spring's cross-section is flat rectangle, and then make conical spring be difficult for along the horizontal direction dislocation, also conical spring's centering nature is better, and then the axis removal of restriction balancing weight along the sliding barrel, and then avoid the balancing weight to cut with the scissors with the inner wall of sliding barrel at the in-process edge all around that receives the shock wave upward movement and rub, and then guarantee to receive the upwards extrusion board that shocks resistance that the balancing weight that the shock wave strikes can be stable, and then guarantee the normal of explosion vent and open, and then improved explosion vent job stabilization nature.
Preferably, a space is reserved between the edge of the upper end of the balancing weight and the inner wall of the sliding cylinder.
Leave the interval between the inner wall through the upper end edge that sets up the balancing weight and a slip section of thick bamboo, and then the balancing weight is receiving shock wave upward movement's in-process, can discharge the balancing weight and the air between the board that shocks resistance from the interval fast, and then can not form the backpressure because the balancing weight and the unable quick discharge of air between the board that shocks resistance, and then guarantee that the balancing weight can strike the board that shocks resistance fast after the impact that receives the shock wave, and then promote the upward movement that shocks resistance fast, and then the realization is scattered when reaching the shock wave that the explosion produced, and then the security of explosion vent self has been improved.
Preferably, a through hole is arranged at the lower end of the supporting shaft along the transverse direction; the limiting shaft is in clearance fit with the through hole.
Can follow the lower extreme of back shaft through setting up spacing axle and follow horizontal free slip, and then make a rotatory section of thick bamboo rotatory in-process that rises or descend can not extrude between with spacing axle, and then make rotatory section of thick bamboo can be more smooth rotatory rise or descend, and then prevent the velocity of motion of a rotatory section of thick bamboo and can't match the velocity of thrust of the shock wave that the explosion produced, and then prevent that a rotatory section of thick bamboo from because the motion resistance is too big and the shock wave that is produced by the explosion from impacting and destroying, and then improved explosion-proof door's life.
Preferably, the outer side of the upper end of the rotary cylinder is provided with guide support components at intervals along the circumferential direction; the guide supporting component comprises a mounting bracket, a rotating shaft and a roller; one end of the mounting bracket is fixedly connected to the upper surface of the limiting plate; the other end of the mounting bracket is symmetrically provided with two support rods; the roller is arranged between the two support rods; the arc surface of the roller is attached to the cylindrical surface of the supporting shaft; the roller is rotatably connected to the two supporting rods through the rotating shaft.
The form through gyro wheel extrusion revolving drum outer wall leads and supports the motion of a revolving drum, and not only the direction is effectual with the support, can guarantee the rotatory smoothness degree that rises and descend of a revolving drum moreover, and then makes the velocity of motion of a revolving drum can match the velocity of thrust of the shock wave that the explosion produced, and then prevents that a revolving drum from because the motion resistance is too big and the shock wave that is produced by the explosion from assaulting and destroying, and then has improved explosion-proof door's life.
The invention has the following beneficial effects:
1. when explosion occurs, shock waves are formed in the well due to explosion, impact force is generated on the shock plate, the shock plate pushes the rotary cylinder to move upwards, the limit shaft at the lower end of the support shaft slides along the spiral groove on the inner wall of the rotary cylinder, the rotary cylinder rotates in the circumferential direction in the lifting process, the rotary cylinder compresses the first spring above the rotary cylinder in the process, meanwhile, in the rotating and lifting process of the shock plate, the shock plate drives the sliding cylinder to rotate and lift along the inner wall of the explosion-proof barrel, after the upper surface of the shock plate contacts the collision-proof block, the shock plate and the sliding cylinder stop lifting, the second through hole in the sliding cylinder is aligned with the first through hole in the explosion-proof barrel, the shock waves generated in the well are dissipated from a channel formed by the first through hole and the second through hole, and the shock waves generated in the well need to overcome the elasticity of the first spring and the gravity of the counterweight block in the process, further, the shock wave generated by explosion is weakened to a certain extent, so that the shock wave cannot generate great shock to the surrounding environment when being scattered from a channel formed by the first through hole and the second through hole, and the safety of the explosion door is improved; meanwhile, shock waves generated by explosion are matched with the helical grooves with large screw pitches to realize automatic rotation and lifting of the rotary cylinder, so that alignment of the first through hole and the second through hole is automatically realized, the shock waves are automatically and quickly scattered after the explosion occurs, the safety of the explosion door is further ensured, and a foundation is provided for automatic resetting of the explosion door; after the shock wave that the explosion produced scatters from the passageway that a through-hole and No. two through-holes formed, under the effect of the recoil of a spring and the dead weight of balancing weight, the sliding cylinder, board and rotatory decline of shocking resistance together rotate, after the lower extreme contact mounting panel of sliding cylinder, the sliding cylinder stops rotatory decline, and then realize that No. two through-holes and a through-hole stagger, and then realize explosion-proof door's sealed, and then realize need not artificial control, can be automatic and timely close explosion-proof door, and then reduce the diffusion of the poisonous gas in the well and dust, and then reduce the injury of poisonous gas and dust to the human body, the security of using explosion-proof door has further been improved.
2. According to the explosion-proof door, the balancing weight is arranged to be in a conical structure, the conical surface is arranged to be in an arc-shaped conical surface, so that shock waves generated by explosion in a well can be dispersed around along the arc-shaped conical surface on the balancing weight when the shock waves impact the balancing weight, the shock waves can be more smoothly flushed out along the second through hole and the first through hole which are transversely arranged, the front impact of the shock waves generated by explosion on the explosion-proof door is reduced, the damage of the shock waves to the explosion-proof door is reduced, the safety of the explosion-proof door is improved, and the service life of the explosion-proof door is prolonged.
3. According to the anti-impact door, the conical spring is arranged between the balancing weight and the anti-impact plate, the conical spring is prevented from moving in the horizontal direction, the conical spring is prevented from being staggered in the horizontal direction due to the fact that the section of the conical spring is flat and rectangular, the balancing weight is prevented from moving along the axis of the sliding barrel, the edges of the periphery of the balancing weight and the inner wall of the sliding barrel are prevented from being scratched and rubbed in the process that the balancing weight moves upwards due to impact waves, the balancing weight impacted by the impact waves can stably extrude the anti-impact plate upwards, normal opening of the anti-impact door is guaranteed, and working stability of the anti-impact door is improved.
4. According to the explosion-proof door, the limiting shaft can slide along the lower end of the supporting shaft transversely and freely, so that the rotating cylinder cannot be extruded with the limiting shaft in the rotating ascending or descending process, the rotating cylinder can rotate to ascend or descend more smoothly, the moving speed of the rotating cylinder cannot be matched with the pushing speed of shock waves generated by explosion, the rotating cylinder is prevented from being damaged by the shock waves generated by explosion due to overlarge moving resistance, and the service life of the explosion-proof door is prolonged.
5. According to the invention, the movement of the rotary drum is guided and supported in a manner that the outer wall of the rotary drum is extruded by the rollers, so that the guiding and supporting effects are good, the smoothness of the rotation of the rotary drum in ascending and descending can be ensured, the movement speed of the rotary drum can be matched with the pushing speed of shock waves generated by explosion, the rotary drum is prevented from being damaged by the shock waves generated by explosion due to overlarge movement resistance, and the service life of the explosion-proof door is prolonged.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the installation of the vent of the present invention;
FIG. 2 is a schematic view of the entire structure of the explosion vent of the present invention;
FIG. 3 is a schematic view of the internal construction of the vent of the present invention;
FIG. 4 is a cut-away view of the vent of the present invention at an angle;
FIG. 5 is a cross-sectional view of the vent of the present invention at another angle;
FIG. 6 is a front view of the vent of the present invention;
FIG. 7 is a schematic view of the construction of a conical spring according to the present invention;
in the figure: the anti-collision device comprises a base 1, an anti-explosion barrel 2, a mounting plate 21, a limiting plate 22, an anti-collision block 23, a first through hole 24, a sliding barrel 3, a second through hole 31, an anti-impact plate 4, a rotating barrel 5, a spiral groove 51, a supporting shaft 6, a limiting shaft 61, a first spring 7, a balancing weight 8, a steel wire rope 81, an annular rectangular groove 82, a conical spring 83, a guide supporting part 9, a mounting bracket 91, a rotating shaft 92 and a roller 93.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the self-resetting explosion-proof door for the vertical exhaust well in the mining area comprises a base 1, an explosion-proof barrel 2, a mounting plate 21, a limiting plate 22, an anti-collision block 23, a sliding barrel 3, an anti-impact plate 4, a rotating barrel 5, a supporting shaft 6, a first spring 7 and a balancing weight 8; the base 1 is fixedly connected to an air exhaust wellhead of a main ventilator of the coal mine; the explosion-proof barrel 2 is arranged above the base 1; the lower end of the explosion-proof barrel 2 is fixedly connected with the mounting plate 21; the mounting plate 21 is fixedly connected to the base 1 through screws; the middle cylindrical surface of the explosion-proof barrel 2 is uniformly provided with first through holes 24 at intervals along the circumferential direction; the inner wall of the explosion-proof barrel 2 is fixedly connected with the limiting plate 22; the limiting plate 22 is arranged above the first through hole 24; the lower surface of the limiting plate 22 is provided with the anti-collision block 23 along the edge; the sliding cylinder 3 is arranged in the explosion-proof barrel 2; the sliding cylinder 3 is in clearance fit with the anti-explosion barrel 2; the cylindrical surface of the sliding cylinder 3 is uniformly provided with a second through hole 31 at intervals along the circumferential direction; the second through holes 31 and the first through holes 24 are arranged in a staggered mode in the circumferential direction; the upper end of the sliding cylinder 3 is fixedly connected with the impact-resistant plate 4; the counterweight block 8 is arranged below the impact resistant plate 4; the balancing weight 8 is connected to the lower surface of the impact resistant plate 4; the upper surface of the impact-resistant plate 4 is fixedly connected with the lower end of the rotary cylinder 5; two spiral grooves 51 are symmetrically arranged on the inner cylindrical surface of the rotary cylinder 5 along the center; the supporting shaft 6 is arranged in the rotary cylinder 5; the supporting shaft 6 is in clearance fit with the rotating cylinder 5; the lower end of the supporting shaft 6 is provided with a limiting shaft 61; two ends of the limiting shaft 61 respectively slide in the two spiral grooves 51; the upper end of the supporting shaft 6 is fixedly connected to the inner wall of the upper end of the explosion-proof barrel 2; the first spring 7 is sleeved on the supporting shaft 6; one end of the first spring 7 is abutted against the step surface at the upper end of the supporting shaft 6; the other end of the first spring 7 abuts against the upper end face of the rotary cylinder 5.
When the explosion-proof device works, when explosion occurs, shock waves are formed in a well due to explosion, so that the shock-proof plate 4 generates impact force, the shock-proof plate 4 pushes the rotary cylinder 5 to move upwards, the limit shaft 61 at the lower end of the support shaft 6 slides along the spiral groove 51 on the inner wall of the rotary cylinder 5, so that the rotary cylinder 5 rotates in the circumferential direction in the lifting process, the rotary cylinder 5 compresses the first spring 7 above the rotary cylinder 5, meanwhile, in the rotating and lifting process of the shock-proof plate 4, the shock-proof plate 4 drives the sliding cylinder 3 to rotate and lift along the inner wall of the explosion-proof cylinder 2, when the upper surface of the shock-proof plate 4 contacts the anti-collision block 23, the shock-proof plate 4 and the sliding cylinder 3 stop lifting, so that the second through hole 31 on the sliding cylinder 3 is aligned with the first through hole 24 on the explosion-proof cylinder 2, and the shock waves generated in the well are scattered from a channel formed by the first through hole 24 and the second through hole 31, in the process, the shock wave generated in the well needs to overcome the elasticity of the first spring 7 and the gravity of the counterweight block 8, so that the shock wave generated by explosion is weakened to a certain extent, and the shock wave is prevented from generating larger shock to the surrounding environment when being scattered from a channel formed by the first through hole 24 and the second through hole 31, so that the safety of the explosion-proof door is improved; meanwhile, shock waves generated by explosion are matched with the helical groove 51 with large pitch to realize automatic rotation and rising of the rotary cylinder 5, so that the alignment of the first through hole 24 and the second through hole 31 is automatically realized, and then the shock waves are automatically and rapidly dispersed after the explosion occurs, so that the safety of the explosion door is ensured, and a foundation is provided for realizing automatic resetting of the explosion door; after the shock wave that the explosion produced is scattered from the passageway that No. one through-hole 24 and No. two through-holes 31 formed, under the bounce of a spring 7 and the effect of gravity of balancing weight 8, sliding cylinder 3, shock-resistant plate 4 and rotatory section of thick bamboo 5 rotate together and descend, after the lower extreme contact mounting panel 21's of sliding cylinder 3 upper surface, sliding cylinder 3 stops rotatory decline, and then realize No. two through-holes 31 and No. one through-hole 24 stagger, and then realize explosion-proof door's sealed, and then realize need not artificial control, can be automatic and timely with explosion-proof door closed, and then reduce the diffusion of the poisonous gas and the dust in the well, and then reduce the injury of poisonous gas and dust to the human body, further improved the security of using explosion-proof door.
As shown in fig. 3 to 6, the weight member 8 is a conical structure; the conical surface of the balancing weight 8 is an arc-shaped conical surface; the balancing weight 8 is connected with the impact resisting plate 4 through a steel wire rope 81.
Through setting balancing weight 8 to the circular cone structure, and set up the conical surface that the conical surface is the arcuation, and then make the shock wave that the well internal explosion produced can disperse all around along the conical surface of arcuation on the balancing weight 8 when assaulting on the balancing weight 8, and then make the shock wave more smooth along No. two through-holes 31 and No. one through-hole 24 of horizontal setting rush out, and then the shock wave that has reduced the explosion production carries out frontal impact to the explosion vent, and then lower the injury that the shock wave led to the fact the explosion vent, and then the security of explosion vent self has been improved, and then the life of explosion vent has been improved.
As shown in fig. 3 to 7, a conical spring 83 is disposed between the weight block 8 and the impact resistant plate 4; the section of the conical spring 83 is rectangular, and the size of the rectangular in the horizontal direction is larger than that of the rectangular in the vertical direction; an annular rectangular groove 82 is formed in the upper end face of the balancing weight 8; the lower end of the conical spring 83 is placed in the annular rectangular groove 82, and the upper end of the conical spring 83 is fixedly connected to the lower surface of the impact-resistant plate 4.
Through set up conical spring 83 between counter weight 8 and anti-impact plate 4, and restricted conical spring 83 and counter weight 8 between can not take place the removal of horizontal direction, again because conical spring 83's cross-section is flat rectangle, and then make conical spring 83 be difficult for along the dislocation of horizontal direction, also the centering nature of conical spring 83 is better, and then restriction counter weight 8 moves along the axis of sliding tube 3, and then avoid counter weight 8 to cut with the inner wall of sliding tube 3 at the edge all around that receives the in-process of shock wave upward movement and cut with scissors, and then guarantee that the counter weight 8 that receives the shock wave impact can be stable upwards extrudeed anti-impact plate 4, and then guarantee explosion vent's normal opening, and then improved explosion vent job stabilization nature.
As shown in fig. 4 to 6, a space is left between the upper end edge of the weight block 8 and the inner wall of the sliding cylinder 3.
Leave the interval between the inner wall through setting up balancing weight 8's upper end edge and sliding cylinder 3, and then balancing weight 8 is receiving shock wave upward movement's in-process, can discharge balancing weight 8 and the air between 4 of shocking resistance from the interval fast, and then can not form the backpressure because balancing weight 8 and the unable quick discharge of air between 4 of shocking resistance, and then guarantee that balancing weight 8 can strike shock resistance 4 fast after the impact that receives the shock wave, and then promote the upward movement of shocking resistance fast, and then the realization is scattered when the shock wave that the explosion produced reaches, and then the security of explosion vent self has been improved.
As shown in fig. 5 and 6, a through hole is provided in the lower end of the support shaft 6 in the transverse direction; the limiting shaft 61 is in clearance fit with the through hole.
Can follow the lower extreme of back shaft 6 through setting up spacing axle 61 and follow horizontal free slip, and then make rotatory section of thick bamboo 5 rotatory in-process that rises or descend can not extrude between with spacing axle 61, and then make rotatory section of thick bamboo 5 can be more smooth rotatory rise or descend, and then prevent the velocity of motion of rotatory section of thick bamboo 5 and can't match the velocity of thrust of the shock wave that the explosion produced, and then prevent that rotatory section of thick bamboo 5 from because the motion resistance is too big and the shock wave that is produced by the explosion from impacting and destroying, and then improved explosion-proof door's life.
As shown in fig. 2 to 6, guide support members 9 are arranged on the outer side of the upper end of the rotary cylinder 5 at regular intervals along the circumferential direction; the guide supporting part 9 comprises a mounting bracket 91, a rotating shaft 92 and a roller 93; one end of the mounting bracket 91 is fixedly connected to the upper surface of the limiting plate 22; the other end of the mounting bracket 91 is symmetrically provided with two supporting rods; the roller 93 is arranged between the two support rods; the arc surface of the roller 93 is attached to the cylindrical surface of the support shaft 6; the roller 93 is rotatably connected to the two support rods through the rotating shaft 92.
The form through the 5 outer walls of gyro wheel 93 extrusion revolving drum is led and is supported the motion of revolving drum 5, not only the direction is effectual with the support, can guarantee the rotatory smoothness degree that rises and descend of revolving drum 5 in addition, and then make the velocity of motion of revolving drum 5 can match the velocity of push of the shock wave that the explosion produced, and then prevent that revolving drum 5 from being destroyed by the shock wave impact that the explosion produced because of too big motion resistance, and then improved the life of explosion vent.
When the explosion-proof device works, when explosion occurs, shock waves are formed in a well due to explosion, so that the shock-proof plate 4 generates impact force, the shock-proof plate 4 pushes the rotary cylinder 5 to move upwards, the limit shaft 61 at the lower end of the support shaft 6 slides along the spiral groove 51 on the inner wall of the rotary cylinder 5, so that the rotary cylinder 5 rotates in the circumferential direction in the lifting process, the rotary cylinder 5 compresses the first spring 7 above the rotary cylinder 5, meanwhile, in the rotating and lifting process of the shock-proof plate 4, the shock-proof plate 4 drives the sliding cylinder 3 to rotate and lift along the inner wall of the explosion-proof cylinder 2, when the upper surface of the shock-proof plate 4 contacts the anti-collision block 23, the shock-proof plate 4 and the sliding cylinder 3 stop lifting, so that the second through hole 31 on the sliding cylinder 3 is aligned with the first through hole 24 on the explosion-proof cylinder 2, and the shock waves generated in the well are scattered from a channel formed by the first through hole 24 and the second through hole 31, in the process, the shock wave generated in the well needs to overcome the elasticity of the first spring 7 and the gravity of the counterweight block 8, so that the shock wave generated by explosion is weakened to a certain extent, and the shock wave is prevented from generating larger shock to the surrounding environment when being scattered from a channel formed by the first through hole 24 and the second through hole 31, so that the safety of the explosion-proof door is improved; meanwhile, shock waves generated by explosion are matched with the helical groove 51 with large pitch to realize automatic rotation and rising of the rotary cylinder 5, so that the alignment of the first through hole 24 and the second through hole 31 is automatically realized, and then the shock waves are automatically and rapidly dispersed after the explosion occurs, so that the safety of the explosion door is ensured, and a foundation is provided for realizing automatic resetting of the explosion door; after the shock wave that the explosion produced is scattered from the passageway that No. one through-hole 24 and No. two through-holes 31 formed, under the bounce of a spring 7 and the effect of gravity of balancing weight 8, sliding cylinder 3, shock-resistant plate 4 and rotatory section of thick bamboo 5 rotate together and descend, after the lower extreme contact mounting panel 21's of sliding cylinder 3 upper surface, sliding cylinder 3 stops rotatory decline, and then realize No. two through-holes 31 and No. one through-hole 24 stagger, and then realize explosion-proof door's sealed, and then realize need not artificial control, can be automatic and timely with explosion-proof door closed, and then reduce the diffusion of the poisonous gas and the dust in the well, and then reduce the injury of poisonous gas and dust to the human body, further improved the security of using explosion-proof door.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a mine area is found air exhaust well and is used from compound explosion vent which characterized in that: the anti-collision device comprises a base (1), an anti-explosion barrel (2), a mounting plate (21), a limiting plate (22), an anti-collision block (23), a sliding cylinder (3), an anti-collision plate (4), a rotating cylinder (5), a supporting shaft (6), a first spring (7) and a balancing weight (8); the base (1) is fixedly connected to an air exhaust wellhead of a main ventilator of the coal mine; the explosion-proof barrel (2) is arranged above the base (1); the lower end of the explosion-proof barrel (2) is fixedly connected with the mounting plate (21); the mounting plate (21) is fixedly connected to the base (1) through screws; first through holes (24) are uniformly arranged on the middle cylindrical surface of the explosion-proof barrel (2) at intervals along the circumferential direction; the inner wall of the explosion-proof barrel (2) is fixedly connected with the limit plate (22); the limiting plate (22) is arranged above the first through hole (24); the lower surface of the limiting plate (22) is provided with the anti-collision block (23) along the edge; the anti-explosion barrel (2) is internally provided with the sliding barrel (3); the sliding cylinder (3) is in clearance fit with the anti-explosion barrel (2); the cylindrical surface of the sliding cylinder (3) is uniformly provided with second through holes (31) at intervals along the circumferential direction; the second through holes (31) and the first through holes (24) are arranged in a staggered mode in the circumferential direction; the upper end of the sliding cylinder (3) is fixedly connected with the impact-resistant plate (4); the counterweight block (8) is arranged below the impact resistant plate (4); the balancing weight (8) is connected to the lower surface of the impact resistant plate (4); the upper surface of the impact-resistant plate (4) is fixedly connected with the lower end of the rotary cylinder (5); two spiral grooves (51) are symmetrically arranged on the inner cylindrical surface of the rotary cylinder (5) along the center; the supporting shaft (6) is arranged in the rotating cylinder (5); the supporting shaft (6) is in clearance fit with the rotating cylinder (5); the lower end of the supporting shaft (6) is provided with a limiting shaft (61); two ends of the limiting shaft (61) respectively slide in the two spiral grooves (51); the upper end of the supporting shaft (6) is fixedly connected to the inner wall of the upper end of the explosion-proof barrel (2); the first spring (7) is sleeved on the supporting shaft (6); one end of the first spring (7) is abutted against the step surface at the upper end of the supporting shaft (6); the other end of the first spring (7) is abutted against the upper end face of the rotary cylinder (5).
2. The self-healing explosion vent for the vertical exhaust well of the mining area according to claim 1, characterized in that: the balancing weight (8) is of a conical structure; the conical surface of the balancing weight (8) is an arc-shaped conical surface; the balancing weight (8) is connected with the anti-impact plate (4) through a steel wire rope (81).
3. The self-healing explosion vent for the vertical exhaust well of the mining area according to claim 2, characterized in that: a conical spring (83) is arranged between the balancing weight (8) and the anti-impact plate (4); the section of the conical spring (83) is rectangular, and the size of the rectangular in the horizontal direction is larger than that of the rectangular in the vertical direction; an annular rectangular groove (82) is formed in the upper end face of the balancing weight (8); the lower end of the conical spring (83) is placed in the annular rectangular groove (82), and the upper end of the conical spring (83) is fixedly connected to the lower surface of the impact resisting plate (4).
4. The self-healing explosion vent for the vertical exhaust well of the mining area according to claim 3, characterized in that: and a space is reserved between the edge of the upper end of the balancing weight (8) and the inner wall of the sliding cylinder (3).
5. The self-healing explosion vent for the vertical ventilation well of the mining area according to claim 4, characterized in that: a through hole is transversely formed in the lower end of the supporting shaft (6); the limiting shaft (61) is in clearance fit with the through hole.
6. The self-healing explosion vent for the vertical ventilation well of the mining area according to claim 5, characterized in that: the outer side of the upper end of the rotary cylinder (5) is uniformly provided with guide supporting parts (9) at intervals along the circumferential direction; the guide supporting component (9) comprises a mounting bracket (91), a rotating shaft (92) and a roller (93); one end of the mounting bracket (91) is fixedly connected to the upper surface of the limiting plate (22); the other end of the mounting bracket (91) is symmetrically provided with two supporting rods; the roller (93) is arranged between the two support rods; the arc surface of the roller (93) is attached to the cylindrical surface of the support shaft (6); the roller (93) is rotatably connected to the two support rods through the rotating shaft (92).
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Effective date of registration: 20220324 Address after: 046000 western style industrial park, Chengbei Road, Changzhi City, Shanxi Province Patentee after: SHANXI CHANGZHI BEIKE ELECTRICAL Co.,Ltd. Address before: 236200 No. 55, Mengzhuang natural village, Sunzhuang village, Jiangkou Town, Yingshang County, Fuyang City, Anhui Province Patentee before: Zhan Jiyong |
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Address after: 046000 western style industrial park, Chengbei Road, Changzhi City, Shanxi Province Patentee after: Shanxi Changzhi Beike Electric Co.,Ltd. Address before: 046000 western style industrial park, Chengbei Road, Changzhi City, Shanxi Province Patentee before: SHANXI CHANGZHI BEIKE ELECTRICAL Co.,Ltd. |
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