Coal mine belt conveyor smoke protection testing device

Abstract

The present application relates to a kind of coal mine belt conveyor smoke protection test device.The coal mine belt conveyor smoke protection test device includes smoke agent container and matching smoke sensor, the smoke agent container includes bottle-shaped shell and piston bottom plate, the bottle-shaped shell includes nozzle and cylindrical body, one-way valve is provided in the nozzle and is outwardly conducted, further including fixed pulley, pull rope, abutment column and slide, matching roadway roof is equipped with front suspension and rear suspension, fixed pulley is fixed on rear suspension, abutment column rear end is fixed in front suspension lower end, abutment column front end is on the piston bottom plate, slide includes front ring, rear ring and U-shaped frame, fixed slide is on bottle-shaped shell, U-shaped frame middle rear portion is equipped with a connecting plate, pull rope one end is connected on connecting plate, the other end is connected on a pull ring after crossing fixed pulley.The pull ring is far from the spray water nozzle.The present application is simple in structure, convenient to use, will not be drenched staff when testing, is suitable for coal mine underground coal mine belt conveyor.

Description

Technical Field

[0001] This invention relates to a smoke protection testing device for coal mine conveyor belts. Background Technology

[0002] Smoke protection, a basic safety feature for conveyor belts, requires regular testing. This protection device is suspended above the top of the conveyor head plate (above 3 meters). There is no effective testing method, and most mines replace it periodically. This method is costly and inevitably requires manual climbing. A few mines use spray reagents, requiring manual climbing for testing. This approach is unsafe, and the activation of the smoke protection device often triggers fire sprinkler systems, soaking the workers and increasing safety hazards. Summary of the Invention

[0003] The technical problem to be solved by the present invention is how to overcome the defects of the existing testing methods for smoke protection devices of coal mine conveyor belts, and to provide a testing device for smoke protection of coal mine conveyor belts.

[0004] To solve the above-mentioned technical problems, this coal mine conveyor smoke protection testing device includes a smoke agent container and a matching smoke sensor. The smoke agent container includes a bottle-shaped shell and a piston base plate. The bottle-shaped shell includes a nozzle and a cylindrical body. The nozzle is located at the front end of the cylindrical body, and the rear end of the cylindrical body is open. The piston base plate is located inside the bottle-shaped shell, and a sealing sleeve is provided between its outer edge and the inner wall of the cylindrical body of the bottle-shaped shell. The smoke agent container contains a smoke simulating agent. The nozzle of the smoke agent container is located below the matching smoke sensor, and the nozzle has an outwardly conductive... The one-way valve also includes a fixed pulley, a pull rope, a stop post, and a slide. It is equipped with a front and rear suspension on the tunnel roof. The fixed pulley is fixed to the rear suspension, and the rear end of the stop post is fixed to the lower end of the front suspension. The front end of the stop post abuts against the piston base plate. The slide includes a front ring, a rear ring, and a U-shaped frame. The front ring is connected to the front end of the U-shaped frame, fits over the nozzle, and presses against the front end of the cylindrical body. The rear ring fits over the cylindrical body. A connecting rod is located at the rear of the U-shaped frame. One end of the pull rope is connected to the connecting rod, and the other end passes over the fixed pulley and connects to a pull ring. The pull ring is located away from the spray nozzle. The smoke simulant can be the American CRC02105 smoke detector test kit PR02105 Smoke Test smoke simulant. It is available on Taobao and Tianjin Chuangya Technology Co., Ltd.

[0005] With this design, during testing, the operator only needs to pull the pull ring from a distance. This pulls the aerosol container backward via the slide, while the piston base plate remains stationary under the support of the abutment. The pressure of the smoke simulator inside the aerosol container increases, overcoming the one-way valve and being ejected from the nozzle. If the smoke protection device activates normally, no replacement or maintenance is necessary.

[0006] If the smoke protection device fails to activate properly, it indicates that the device is damaged and needs to be replaced or repaired promptly. Because the pull ring is far from the spray nozzle, the spray will not get wet even if the smoke protection device is activated. After the test, release the pull ring; the one-way valve will reset and close, and the smoke agent container will stop spraying the smoke simulator.

[0007] As an optimization, the nozzle has a central hole, which is wider at the front and narrower at the rear. A tapered tube section is provided between the front and rear sections, and a spherical valve core and a helical spring are located inside the front section. A sealing cap is also fitted over the nozzle, with a through hole in the center of the cap. The two ends of the helical spring abut against the spherical valve core and the sealing cap, respectively, forming the one-way valve. This design is simple, convenient, and reliable.

[0008] As an optimization, the front suspension includes a base plate and two connecting plates. Each connecting plate has a vertically elongated slot in the middle. The two connecting plates are staggered, with their two vertical slots partially overlapping and fixed by bolts passing through the overlapping portion. The upper end of the upper connecting plate is welded to the base plate and fixed to the roof of the connecting passageway via the base plate. The rear end of the abutment is fixed to the front side of the lower end of the front suspension. With this design, the length of the front suspension can be adjusted by changing the length of the overlapping portion of the vertical slots on the two connecting plates.

[0009] This coal mine conveyor smoke protection testing device has the advantages of simple structure, convenient use, and no wetness to the staff during testing, making it suitable for use in underground coal mine conveyor belts. Attached Figure Description

[0010] The following description, in conjunction with the accompanying drawings, further illustrates the smoke protection testing device for the conveyor belt in this coal mine:

[0011] Figure 1 This is a partial cross-sectional structural diagram of the smoke protection test device for a coal mine conveyor belt (cut along a vertical plane passing through the axis).

[0012] In the diagram: 1 is the smoke agent container, 2 is the smoke sensor, 11 is the bottle-shaped housing, 12 is the piston base plate, 111 is the nozzle, 112 is the cylindrical body, 13 is the sealing sleeve, 3 is the one-way valve, 4 is the fixed pulley, 5 is the pull rope, 6 is the abutment, 7 is the slide, 8 is the tunnel roof plate, 9 is the front suspension, 10 is the rear suspension, 71 is the front ring, 72 is the rear ring, 73 is the U-shaped frame, 14 is the connecting rod, 15 is the pull ring, 113 is the tapered pipe section, 114 is the ball valve core, 115 is the helical spring, 116 is the sealing cap, 91 is the base plate, 92 is the connecting plate, and 93 is the vertical long groove. Detailed Implementation

[0013] Implementation method one: such as Figure 1As shown, the coal mine conveyor smoke protection testing device of the present invention includes a smoke agent container 1 and a smoke sensor 2. The smoke agent container 1 includes a bottle-shaped shell 11 and a piston base plate 12. The bottle-shaped shell 11 includes a nozzle 111 and a cylindrical body 112. The nozzle 111 is located at the front end of the cylindrical body 112, and the rear end of the cylindrical body 112 is open. The piston base plate 12 is located inside the bottle-shaped shell 11, and a sealing sleeve 13 is provided between its outer edge and the inner wall of the cylindrical body 112. The smoke agent container 1 contains a smoke simulating agent. The nozzle 111 of the smoke agent container 1 is located below the smoke sensor 2. The nozzle 111 is provided with an outwardly opening one-way valve 3. The system includes a fixed pulley 4, a pull rope 5, a stop post 6, and a slide 7. A front suspension 9 and a rear suspension 10 are provided on the tunnel roof 8. The fixed pulley 4 is fixed to the rear suspension 10. The rear end of the stop post 6 is fixed to the lower end of the front suspension 9, and the front end of the stop post abuts against the piston base plate. The slide 7 includes a front ring 71, a rear ring 72, and a U-shaped frame 73. The two front ends of the U-shaped frame 73 are connected to the front ring 71 from both sides. The front ring 71 is fitted onto the nozzle 111 and presses against the front end of the cylindrical body 112. The rear ring 72 is fitted onto the cylindrical body 112. A connecting rod 14 is provided in the rear part of the U-shaped frame 73. One end of the pull rope 5 is connected to the connecting rod 14, and the other end passes over the fixed pulley 4 and is connected to a pull ring 15.

[0014] The nozzle 111 has a central hole, which is thicker at the front and thinner at the rear. A tapered tube section 113 is provided between the front and rear sections. A spherical valve core 114 and a helical spring 115 are provided inside the front section. A sealing cap 116 is also fitted over the nozzle 111. A through hole is opened in the center of the sealing cap 116. The two ends of the helical spring 115 abut against the spherical valve core 114 and the sealing cap 116 respectively, forming the one-way valve.

[0015] The diameter of the small end of the tapered pipe section 113 is less than the diameter of the ball valve core 114, which is less than the diameter of the large end of the tapered pipe section 113.

[0016] The front suspension 9 includes a base plate 91 and two connecting plates 92. The two connecting plates 92 have vertical long slots 93 in the middle. The two connecting plates 92 are staggered vertically, and their two vertical long slots 93 partially overlap and are fixed by bolts passing through the overlapping part. The upper end of the upper connecting plate 92 is welded to the base plate 91 and fixed to the matching tunnel roof plate 8 through the base plate 91. The rear end of the abutment 6 is fixed to the front side of the lower end of the front suspension 9.

Claims

1. A smoke protection testing device for a coal mine conveyor belt, comprising a smoke agent container and a smoke sensor, wherein the smoke agent container comprises a bottle-shaped shell and a piston base plate, the bottle-shaped shell comprises a nozzle and a cylindrical body, the nozzle is disposed at the front end of the cylindrical body, the rear end of the cylindrical body is open, the piston base plate is disposed inside the bottle-shaped shell, and a sealing sleeve is provided between its outer edge and the inner wall of the cylindrical body of the bottle-shaped shell, the smoke agent container contains a smoke simulating agent, characterized in that: The nozzle of the aerosol container is located below the smoke sensor. The nozzle contains an outward-directing one-way valve and also includes a fixed pulley, a pull rope, a stop post, and a slide. A front suspension and a rear suspension are provided on the tunnel roof. The fixed pulley is fixed to the rear suspension, and the rear end of the stop post is fixed to the lower end of the front suspension. The front end of the stop post abuts against the piston base plate. The slide includes a front ring, a rear ring, and a U-shaped frame. The front ring is connected to the front end of the U-shaped frame, fits over the nozzle, and presses against the front end of the cylindrical body. The rear ring fits over the cylindrical body. A connecting rod is located at the rear of the U-shaped frame. One end of the pull rope is connected to the connecting rod, and the other end passes over the fixed pulley and is connected to a pull rope. On the ring, the nozzle has a central hole, which is thicker at the front and thinner at the rear. A tapered tube section is provided between the front and rear sections, and a spherical valve core and a helical spring are provided inside the front section. A cap is also fitted over the nozzle, with a through hole in the center of the cap. The two ends of the helical spring abut against the spherical valve core and the cap, respectively, forming the one-way valve. The front suspension includes a base plate and two connecting plates. The two connecting plates each have a vertical long groove in the middle. The two connecting plates are staggered, and their two vertical long grooves partially overlap and are fixed by bolts passing through the overlapping part. The upper end of the upper connecting plate is welded to the base plate and fixed to the roof of the matching tunnel through the base plate. The rear end of the abutment is fixed to the front side of the lower end of the front suspension.

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