Negative pressure adaptive mining safety air door

Abstract

The utility model relates to the field of safety air doors, and discloses a negative pressure adaptive mining safety air door which comprises an air door mounting plate and two air doors arranged on the front side of the air door mounting plate, a cross beam is fixedly mounted at the top of the front side of the air door mounting plate, and two electric guide rails are fixedly mounted at the bottom of the cross beam; electric sliding seats are slidably mounted on the two electric guide rails correspondingly, the tops of the two air doors are fixedly connected with the bottoms of the corresponding electric sliding seats correspondingly, sealing gaskets are fixedly mounted on the sides, close to each other, of the two air doors correspondingly, the two sealing gaskets abut against each other, and an access channel located behind the two air doors is formed in the air door mounting plate. Wherein one air door is provided with a negative pressure adaptation mechanism used for maintaining air pressure balance in a mine. The device has the following advantages and effects that when the two air doors are closed to block air flow, air pressure balance on the two sides of the air doors can be automatically maintained, the negative pressure difference on the two sides of the air doors is eliminated, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of safety dampers, and in particular to a negative pressure adaptable mining safety damper. Background Art

[0002] Mine safety dampers are a type of equipment installed in mine ventilation systems. Mine safety dampers can adjust the ratio of air intake and exhaust or block the airflow according to actual needs, control the direction of airflow in mines, make the air flow reasonable and stable, avoid explosions, suffocation and other dangerous situations in mines, and ensure the safety of workers. At the same time, the adjustment of mine safety dampers can also reduce the loss of air volume in mines and improve ventilation quality. After searching, the patent document with authorization announcement number CN214616627U announces a mining safety damper, which includes a bottom plate, a front side plate arranged on both sides of the bottom plate, a rear side plate arranged behind the front side plate, a bottom frame arranged in the middle of the bottom plate, a top frame arranged on the side plate, and a damper closing structure arranged on the bottom frame and the top frame, wherein the bottom frame and the top frame are arranged between the front side plate and the rear side plate, and the damper closing structure includes a guide rail arranged in the bottom frame, a slider arranged on the guide rail, a motor arranged on the top frame, a screw rod arranged on the motor, a screw rod ball nut arranged on the screw rod, a door plate arranged on the screw rod ball nut, and a top wind shield plate arranged on the front side of the top frame, the door plate is located on the rear side of the wind shield plate, the height of the door plate is higher than the height between the bottom frame and the top frame, the screw rod, the top frame and the bottom frame are parallel to each other, and the damper closing structure can improve the isolation effect of the damper and improve the safety of the damper.

[0003] In actual use, it was found that the above-mentioned related schemes still have at least the following shortcomings: when the safety damper is closed to block the airflow, a large negative pressure is easily generated in the space on one side of the safety damper inside the mine, and the air pressure balance on both sides of the damper cannot be automatically maintained, resulting in a certain negative pressure difference on both sides of the safety damper, increasing the safety hazard. Therefore, we propose a negative pressure-adaptive mine safety damper to solve the above problems. Utility Model Content

[0004] The purpose of the present application is to provide a negative pressure adaptable mining safety damper, which can automatically maintain the air pressure balance on both sides of the damper when the two dampers are closed to block the airflow, eliminate the negative pressure difference on both sides of the damper, and effectively reduce safety hazards.

[0005] The above-mentioned technical purpose of the present application is achieved through the following technical solutions: a negative pressure-adaptive mine safety damper, comprising a damper mounting plate and two dampers arranged on the front side of the damper mounting plate, a crossbeam fixedly installed on the front top of the damper mounting plate, two electric guide rails fixedly installed on the bottom of the crossbeam, electric slides are slidably installed on the two electric guide rails, the tops of the two dampers are respectively fixedly connected to the bottoms of the corresponding electric slides, sealing gaskets are fixedly installed on the sides of the two dampers close to each other, and the two sealing gaskets are in conflict with each other, and an inlet and outlet channel is opened on the damper mounting plate behind the two dampers, and one of the dampers is provided with a negative pressure adaptation mechanism for maintaining the air pressure balance in the mine.

[0006] The present application is further configured as follows: the negative pressure adaptation mechanism includes a baffle, a fixed plate, two springs, an electromagnet and a stainless steel plate, an installation cavity is opened in the damper, air vents are opened on the front inner wall and the rear inner wall of the installation cavity, the baffle is arranged in the installation cavity, the outer wall of the baffle is in sliding sealing contact with the inner wall of the installation cavity, the fixed plate is fixedly installed on the top inner wall of the installation cavity, the electromagnet is fixedly installed on the bottom of the fixed plate, the bottom ends of the two springs are respectively fixedly connected to the top sides of the baffle, the top ends of the two springs are fixedly connected to the bottom sides of the fixed plate, the stainless steel plate is fixedly installed on the top of the baffle and is located between the two springs, and the stainless steel plate is located directly below the electromagnet.

[0007] The present application is further configured as follows: two vertical guide rods are fixedly installed in the installation cavity, the baffle is slidably sleeved on the two vertical guide rods, and two springs are respectively sleeved on the corresponding vertical guide rods.

[0008] The present application is further configured as follows: the negative pressure adaptation mechanism also includes two pressure sensors and a controller, two grooves are provided on the front outer wall and the rear outer wall of the damper, the two pressure sensors are respectively fixedly installed in the corresponding grooves, the controller is fixedly installed on the front outer wall of the damper, and the electromagnet, the two pressure sensors and the controller are electrically connected.

[0009] The present application is further configured as follows: observation windows are provided on both dampers, and transparent observation mirrors are fixedly installed in both observation windows.

[0010] The present application is further configured as follows: a U-shaped guide plate is fixedly installed on the front bottom of the damper mounting plate, a plurality of rollers are rotatably installed on the bottom of the two dampers, and the bottoms of the plurality of rollers are in rolling contact with the bottom inner wall of the U-shaped guide plate.

[0011] The present application is further configured as follows: the front outer wall of the damper mounting plate and the rear outer walls of the two dampers are both smooth planes, and the rear outer walls of the two dampers are in sliding and sealing contact with the front outer wall of the damper mounting plate.

[0012] The present application includes at least one of the following beneficial technical effects:

[0013] 1. The present application utilizes a negative pressure adaptation mechanism composed of a baffle, a fixing plate, two springs, an electromagnet, a stainless steel plate, two pressure sensors and a controller. When the two dampers are closed to block the airflow, the air pressure balance on both sides of the dampers can be automatically maintained, the negative pressure difference on both sides of the dampers can be eliminated, and the safety hazard can be effectively reduced.

[0014] 2. The present application controls the two electric slides to move toward each other on their respective electric guide rails, thereby controlling the two dampers to move toward each other. The two dampers can be used to completely block the inlet and outlet channels, blocking the airflow on both sides of the dampers, thereby achieving the effect of blocking the wind flow. By controlling the two electric slides to move away from each other on their respective electric guide rails, the two dampers can be controlled to move in a straight line away from each other. At this time, the two dampers no longer completely block the inlet and outlet channels, and the staff and equipment can freely pass through the inlet and outlet channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of this embodiment.

[0016] Figure 2 It is a rear view structural schematic diagram of this embodiment.

[0017] Figure 3 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0018] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A.

[0019] Figure 5 It is a control block diagram of this embodiment.

[0020] In the figure, 1. damper mounting plate; 2. damper; 3. sealing gasket; 4. crossbeam; 5. electric guide rail; 6. electric slide seat; 7. inlet and outlet channel; 8. mounting cavity; 9. air vent; 10. baffle; 11. fixing plate; 12. spring; 13. electromagnet; 14. stainless steel plate; 15. vertical guide rod; 16. transparent observation mirror; 17. U-shaped guide plate; 18. roller; 19. pressure sensor; 20. controller. DETAILED DESCRIPTION

[0021] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The present application provides a negative pressure adapted mine safety damper, comprising a damper mounting plate 1 and two dampers 2 arranged on the front side of the damper mounting plate 1, wherein the damper mounting plate 1 is installed and fixed at a required position in the mine, wherein:

[0023] A crossbeam 4 is fixedly installed on the top of the front side of the damper mounting plate 1, and two electric guide rails 5 are fixedly installed on the bottom of the crossbeam 4. Electric slide seats 6 are slidably installed on the two electric guide rails 5. The tops of the two dampers 2 are fixedly connected to the bottoms of the corresponding electric slide seats 6 respectively. By using the sliding connection cooperation of the two electric slide seats 6 on the corresponding electric guide rails 5, the two dampers 2 can be controlled to move linearly in the direction away from each other to achieve the effect of opening the door (at this time, the wind flow is not blocked), and the two dampers 2 can also be controlled to move linearly in the direction close to each other to achieve the effect of closing the door (at this time, the wind flow is blocked). The two dampers 2 are fixed on the side close to each other. Sealing gaskets 3 are installed, and the two sealing gaskets 3 are in conflict with each other. When the two dampers 2 are closed, the two sealing gaskets 3 can be used to effectively seal the gap between the two dampers 2 to improve the sealing when closing the door. The damper mounting plate 1 is provided with an inlet and outlet channel 7 located behind the two dampers 2. The two dampers 2 can be used to fully block the inlet and outlet channel 7. The inlet and outlet channel 7 is used to provide access for staff, equipment, etc. It should be added that the two electric guide rails 5 and the two electric slides 6 are purchased on the market or customized in the factory, and their line connection and control methods are mature technologies in this field and have been fully disclosed, so they are not repeated in the specification.

[0024] In this embodiment, a negative pressure adaptation mechanism for maintaining the air pressure balance in the mine is provided on one of the dampers 2, and the negative pressure adaptation mechanism includes a baffle 10, a fixed plate 11, two springs 12, an electromagnet 13, a stainless steel plate 14, two pressure sensors 19 and a controller 20. An installation cavity 8 is provided in the damper 2, and air holes 9 are provided on the front inner wall and the rear inner wall of the installation cavity 8. The baffle 10 is arranged in the installation cavity 8, and the outer wall of the baffle 10 is in sliding sealing contact with the inner wall of the installation cavity 8. The fixed plate 11 is fixedly installed on the top inner wall of the installation cavity 8, and the electromagnet 13 is fixedly installed on the bottom of the fixed plate 11. The bottom ends of the two springs 12 are fixedly connected to the top two sides of the baffle 10 respectively. The top ends of the two springs 12 are fixedly connected to the bottom sides of the fixing plate 11, and the stainless steel plate 14 is fixedly installed on the top of the baffle 10 and is located between the two springs 12. The stainless steel plate 14 is located directly below the electromagnet 13. The baffle 10 can be used to fully and effectively block the two air holes 9. The magnetic force generated when the electromagnet 13 is energized can be used to magnetically adsorb and fix the stainless steel plate 14, so that the stainless steel plate 14 drives the baffle 10 to slide vertically upward, and the blockage of the two air holes 9 is released, so that the airflow on both sides of the damper 2 can flow through the two air holes 9, achieving air pressure balance on both sides of the damper 2, and eliminating the air pressure difference on both sides of the damper 2. The elastic force of the two springs 12 is used The baffle 10 can be controlled to reset automatically. Two grooves are provided on the front outer wall and the rear outer wall of the damper 2. Two pressure sensors 19 are fixedly installed in the corresponding grooves respectively. The controller 20 is fixedly installed on the front outer wall of the damper 2. The electromagnet 13, the two pressure sensors 19 and the controller 20 are electrically connected. The air pressure values ​​on both sides of the damper 2 can be monitored respectively by the two pressure sensors 19. The air pressure value data monitored by the two pressure sensors 19 are transmitted to the controller 20. The controller 20 is pre-set with a suitable air pressure difference range on both sides of the damper 2. When the air pressure difference value monitored by the two pressure sensors 19 is within the set air pressure difference range, the electromagnet 13 will not be energized to generate Magnetic force, when the air pressure difference monitored by the two pressure sensors 19 is greater than the set air pressure difference range, the controller 20 will control the electromagnet 13 to energize and generate magnetic force, that is, the stainless steel plate 14 and the baffle 10 can be magnetically adsorbed to move vertically upward, thereby releasing the blockage of the two air holes 9, so that the airflow on both sides of the damper 2 can flow through the two air holes 9, and the air pressure on both sides of the damper 2 is balanced. It should be added that the controller 20 adopts a plc controller, and the control method of the electromagnet 13 is automatically controlled by the controller 20. The control circuit of the controller 20 can be realized by simple programming by technicians in this field, which is common knowledge in this field, so the control method and circuit connection will not be explained in detail.

[0025] In this embodiment, two vertical guide rods 15 are fixedly installed in the installation cavity 8, and the baffle 10 is slidably mounted on the two vertical guide rods 15. Two springs 12 are respectively mounted on the corresponding vertical guide rods 15 to guide the sliding direction of the baffle 10, so that the baffle 10 can maintain stable vertical sliding in the installation cavity 8.

[0026] In this embodiment, observation windows are provided on the two dampers 2, and transparent observation mirrors 16 are fixedly installed in the two observation windows. The transparent observation mirrors 16 can be made of transparent tempered glass.

[0027] In this embodiment, a U-shaped guide plate 17 is fixedly installed on the front bottom of the damper mounting plate 1, and a plurality of rollers 18 are rotatably installed on the bottom of the two dampers 2. The bottoms of the plurality of rollers 18 are in rolling contact with the bottom inner wall of the U-shaped guide plate 17, thereby supporting the two dampers 2 and improving the stability of the two dampers 2 when moving horizontally and linearly.

[0028] In this embodiment, the front outer wall of the damper mounting plate 1 and the rear outer walls of the two dampers 2 are both smooth planes, and the rear outer walls of the two dampers 2 are in sliding and sealing contact with the front outer wall of the damper mounting plate 1, which can ensure effective sealing between the damper mounting plate 1 and the two dampers 2.

[0029] Through the above structure, when the negative pressure-adaptive mining safety damper provided by the present application is in use, when the two dampers 2 are closed to block the airflow, the air pressure balance on both sides of the dampers 2 can be automatically maintained, the negative pressure difference on both sides of the dampers 2 can be eliminated, and the safety hazard can be effectively reduced. In specific operation, by controlling the two electric slides 6 to move toward each other on their respective electric guide rails 5, the two electric slides 6 will drive the corresponding dampers 2 to move in a straight line, so that when the sealing gaskets 3 on the two dampers 2 are tightly in contact, the two electric slides 6 stop sliding, and at this time, the two dampers 2 can fully block the inlet and outlet channels 7 to block the airflow on both sides of the dampers 2, that is, to achieve the effect of blocking the airflow, and by controlling the two electric slides 6 to move away from each other on their respective electric guide rails 5, the two dampers 2 can move in a straight line in the direction away from each other, and at this time, the two dampers 2 no longer fully block the inlet and outlet channels 7, and the staff and equipment can freely pass through the inlet and outlet channels 7;

[0030] When the two dampers 2 are closed to block the airflow, the air pressure values ​​on both sides of the dampers 2 can be monitored respectively by using the two pressure sensors 19. The air pressure value data monitored by the two pressure sensors 19 are transmitted to the controller 20. When the air pressure difference monitored by the two pressure sensors 19 is greater than the set air pressure difference range, the controller 20 will control the electromagnet 13 to energize and generate magnetic force, that is, the stainless steel plate 14 and the baffle 10 are magnetically adsorbed and moved vertically upward, and the two springs 12 are gradually compressed to generate elastic force, thereby releasing the blockage of the two air holes 9, so that the airflow on both sides of the damper 2 flows through the two air holes 9, and the air pressure balance on both sides of the damper 2 is achieved. When the air pressure difference monitored by the two pressure sensors 19 is within the set air pressure difference range, the electromagnetic force of the electromagnet 13 disappears, and under the elastic force of the two springs 12, the stainless steel plate 14 and the baffle 10 can be controlled to move vertically downward and automatically return to their positions, so that the two air holes 9 can be fully blocked.

Claims

1. A negative pressure adapted mine safety damper, characterized in that: It comprises a damper mounting plate (1) and two dampers (2) arranged on the front side of the damper mounting plate (1); a crossbeam (4) is fixedly mounted on the top of the front side of the damper mounting plate (1); two electric guide rails (5) are fixedly mounted on the bottom of the crossbeam (4); electric slide seats (6) are slidably mounted on the two electric guide rails (5); the tops of the two dampers (2) are respectively fixedly connected to the bottoms of the corresponding electric slide seats (6); sealing pads (3) are fixedly mounted on the sides of the two dampers (2) that are close to each other; the two sealing pads (3) are in contact with each other; an inlet and outlet channel (7) is opened on the damper mounting plate (1) and is located behind the two dampers (2); one of the dampers (2) is provided with a negative pressure adaptation mechanism for maintaining the air pressure balance in the mine; The negative pressure adaptation mechanism comprises a baffle (10), a fixing plate (11), two springs (12), an electromagnet (13) and a stainless steel plate (14); a mounting cavity (8) is provided in the damper (2); air holes (9) are provided on the front inner wall and the rear inner wall of the mounting cavity (8); the baffle (10) is arranged in the mounting cavity (8); the outer wall of the baffle (10) is in sliding sealing contact with the inner wall of the mounting cavity (8); the fixing plate (11) is fixedly installed in the mounting cavity (8) 8), the electromagnet (13) is fixedly mounted on the bottom of the fixing plate (11), the bottom ends of the two springs (12) are respectively fixedly connected to the top sides of the baffle (10), the top ends of the two springs (12) are fixedly connected to the bottom sides of the fixing plate (11), the stainless steel plate (14) is fixedly mounted on the top of the baffle (10) and is located between the two springs (12), and the stainless steel plate (14) is located directly below the electromagnet (13); Two vertical guide rods (15) are fixedly installed in the installation cavity (8), the baffle (10) is slidably mounted on the two vertical guide rods (15), and the two springs (12) are respectively mounted on the corresponding vertical guide rods (15); The negative pressure adaptation mechanism further comprises two pressure sensors (19) and a controller (20); two grooves are respectively provided on the front outer wall and the rear outer wall of the damper (2); the two pressure sensors (19) are respectively fixedly mounted in the corresponding grooves; the controller (20) is fixedly mounted on the front outer wall of the damper (2); the electromagnet (13), the two pressure sensors (19) and the controller (20) are electrically connected; The two dampers (2) are each provided with an observation window, and a transparent observation mirror (16) is fixedly installed in each of the two observation windows; A U-shaped guide plate (17) is fixedly mounted on the front bottom of the damper mounting plate (1), and a plurality of rollers (18) are rotatably mounted on the bottoms of the two dampers (2), and the bottoms of the plurality of rollers (18) are in rolling contact with the bottom inner wall of the U-shaped guide plate (17).

2. A negative pressure adapted mine safety damper according to claim 1, characterized in that: The front outer wall of the damper mounting plate (1) and the rear outer walls of the two dampers (2) are both smooth planes, and the rear outer walls of the two dampers (2) are in sliding sealing contact with the front outer wall of the damper mounting plate (1).

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