Bunker collapse prevention device for coal bunker

Abstract

The invention relates to the technical field of coal bunker equipment, in particular to a coal bunker collapse prevention device which comprises a collapse prevention gate, the collapse prevention gate comprises a fan-shaped gate, a rotating shaft and a driving component, the fan-shaped gate comprises an arc-shaped gate plate and a fan-shaped side plate, and a shaft hole connected with the rotating shaft in a matched mode is formed in the circle center corresponding to the arc edge of the fan-shaped side plate; after the rotating shaft penetrates through the shaft hole, the two ends of the rotating shaft are supported by the two side walls of the feeding equipment guide groove, a rotating shaft supporting point is arranged on the upper portion close to the outlet end of the feeding equipment guide groove, and the radial gate plate is close to the receiving end of the feeding equipment guide groove relative to the rotating shaft. The left side edge and the right side edge of the arc-shaped gate plate are coupled with the two side walls of a material guide groove of the feeding equipment, the lower end of the arc-shaped gate plate is coupled with the bottom face of a material conveying cavity of the feeding equipment, the direction of torque formed by force exerted on the arc-shaped gate plate by moving materials is the same as that of torque needed for closing the gate, the fan-shaped gate can be rapidly closed, and further bin collapse can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of coal bunker equipment, and in particular to a coal bunker anti-collapse device. Background Art

[0002] In the production process of coal enterprises, coal bunkers are the main facilities for storing coal. Various coal bunkers are set up in the coal transportation system, such as mining area coal bunkers, main shaft loading coal bunkers, main shaft unloading coal bunkers, product bunkers, etc. Coal bunkers play an important role in the storage and transportation of coal, but the problems existing in the use of coal bunkers are also worthy of attention.

[0003] Among them, bunker collapse accident is one of the most serious accidents in the use of coal bunker. Once a bunker collapse accident occurs, the equipment may be buried or damaged at the least, and casualties may occur at the worst.

[0004] At present, in order to solve the problem of warehouse collapse, the solution adopted is:

[0005] 1. Try to reduce the amount of moisture entering the coal bunker. However, during the coal mining process, groundwater seepage, spray dust reduction, and coal wet selection will inevitably cause water to enter the mined coal, and then be loaded into the coal bunker during transportation, causing the accumulation of moisture in the coal in the coal bunker. If the coal is not stored in the bunker for a long time, it will still cause the production of watery coal.

[0006] 2. Avoid storing coal in coal bunkers for a long time. Try to shorten the storage time of coal in coal bunkers and release the coal in time. However, due to the limitations of other factors in the coal transportation system, it is impossible to release the coal in the coal bunker in time. A large amount of coal still needs to be stored for a long time, and there is a risk of bunker collapse.

[0007] 3. Install a gate at the bottom of the coal bunker and close it when a bunker breach is detected. However, a bunker breach occurs in an instant. When the on-site personnel try to close the gate, the pressure of the breach is particularly high and the closing resistance of the gate is very large. The gate cannot be closed or closes slowly, and the breach cannot be prevented.

[0008] Existing solutions and means are unable to prevent the occurrence of bunker collapse accidents, which seriously threaten the normal operation of coal enterprises and the life safety of on-site personnel. Effective technical solutions are urgently needed to solve the problem of bunker collapse. Summary of the invention

[0009] The present invention aims to provide a coal bunker anti-collapse device in view of the problem that the prior art cannot effectively prevent bunker collapse.

[0010] The technical solution of the present invention is:

[0011] A coal bunker anti-collapse device comprises an anti-collapse gate installed at the front end of a material guide trough of a feeding device, the anti-collapse gate comprises a fan-shaped gate, a rotating shaft and a driving component, the fan-shaped gate comprises an arc gate plate and a fan-shaped side plate, the arc gate plate is fixedly connected at the arc edge of the fan-shaped side plate, and an axial hole matched with the rotating shaft is provided at the center of a circle corresponding to the arc edge of the fan-shaped side plate, after the rotating shaft passes through the axial hole, both ends are supported by the two side walls of the material guide trough of the feeding device, the rotating shaft support point is arranged at the upper part close to the outlet end of the material guide trough of the feeding device, the arc gate plate is close to the receiving end of the material guide trough of the feeding device relative to the rotating shaft, the driving component drives the fan-shaped gate to rotate with the rotating shaft as the axis, and when the fan-shaped gate is rotated downward to close, the left and right sides of the arc gate plate are coupled with the two side walls of the material guide trough of the feeding device, and the lower end of the arc gate plate is coupled with the bottom surface of the feeding cavity of the feeding device, so as to close the entire cross-section of the feeding cavity.

[0012] When the anti-burst gate is closed, the sector gate rotates downward around the shaft to cut off the moving material. The moving material squeezes the arc gate plate. The force exerted by the moving material on the arc gate plate forms a torque in the same direction as the torque required to close the gate, so that the sector gate can be closed quickly.

[0013] One end of the driving component is connected to the sector gate, and the other end is connected to the foundation.

[0014] The shaft hole of the fan-shaped gate is connected to the rotating shaft, and the rotating shaft drives the fan-shaped gate to rotate. The two ends of the rotating shaft are fixed to the two sides of the material guide trough of the feeding equipment through bearing seats. A driving arm is provided at the end of the rotating shaft. One end of the driving component is connected to the driving arm, and the other end is installed on the material guide trough of the feeding equipment.

[0015] The anti-collapse gate comprises a plurality of coaxially nested sector gates, the arc gate plates of which constitute a stacked structure with different radii. When the sector gates are opened, the plurality of coaxially nested sector gates can be overlapped and folded to reduce the occupied space.

[0016] The plurality of mutually nested and coaxially arranged sector gates include one active sector gate and a plurality of driven sector gates. A driving structure is provided between adjacent sector gates. The driving component drives the active sector gate, and the active sector gate can open or close the driven sector gate through the driving structure.

[0017] The driving structure is a pair of convex blocks arranged on the fan-shaped gate and cooperating with each other.

[0018] The driving components include hydraulic cylinders, air cylinders, electric cylinders or winches.

[0019] It also includes a sensor and a controller. The sensor is connected to the controller. The sensor sends a signal when the warehouse collapses to the controller. The controller can control the anti-warehouse collapse gate to close. The sensor includes a material level sensor, a humidity sensor and / or a liquid level sensor.

[0020] The material level sensor is arranged at the front part of the outlet of the material guide chute of the feeding device which exceeds the normal feeding material level of the feeding device.

[0021] The material level sensor is arranged on the top of the material guide trough of the feeding equipment.

[0022] The humidity sensor is arranged in the coal bunker opening where the feeding equipment is installed, and is used to detect the moisture content of the material in the bunker opening.

[0023] The liquid level sensor is arranged in a liquid collecting tank, which is arranged below the feeding device and is used to collect water leaking from the coal bunker when the feeding device stops.

[0024] The liquid collecting trough includes a fixed trough and a movable trough. The fixed trough is arranged at the lower part of the feeding equipment. The movable trough is arranged at the lower part of the front end of the fixed trough through a moving mechanism. The liquid level sensor is arranged in the movable trough. When the feeding equipment stops, the movable trough moves to the bottom of the notch of the fixed trough to collect water flowing down the fixed trough. When the feeding equipment starts, the movable trough moves to the bottom of the fixed trough to prevent materials from entering the movable trough.

[0025] The movement mechanism is that a slide rail is arranged at the lower part of the front end of the fixed groove, the movable groove is coupled with the slide rail, and a driving member is arranged at the rear end of the movable groove, and the driving member can drive the movable groove to slide along the slide rail.

[0026] The movement mechanism is that the movable slot is connected to the fixed slot through a hinge shaft, and a driving member is arranged at the rear end of the movable slot, and the driving member can drive the movable slot to rotate around the hinge shaft.

[0027] The driving member includes a hydraulic cylinder, a pneumatic cylinder, an electric cylinder or a winch.

[0028] In order to facilitate the water to flow out from the slot, the bottom of the fixed slot is inclined downward from the back to the front.

[0029] The beneficial effects of the present invention are:

[0030] 1. When the anti-burst gate is closed, the torque formed by the force of the moving material acting on the arc gate plate is in the same direction as the torque required for closing the gate, so that the fan-shaped gate can be closed quickly, the gate closing time is short, and the further occurrence of burst can be prevented.

[0031] 2. The fan gate is a curved gate plate, which is stronger than the flat gate, has better force stability and is not easy to deform.

[0032] 3. Use a number of coaxially nested sector gates. When the sector gates are opened, the coaxially nested sector gates can be overlapped and folded to reduce the occupied space.

[0033] 4. The sensor detects the warehouse collapse, and the controller controls the anti-warehouse collapse gate to close, realizing automatic control and fast anti-warehouse collapse reaction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a coal bunker anti-burst device in Example 1;

[0035] Figure 2 yes Figure 1 AA cross-sectional structure diagram;

[0036] Figure 3 It is a schematic diagram of the partial structure of the water collecting tank in Example 1;

[0037] Figure 4 is a schematic diagram of the connection between the controller and the sensor in Example 1;

[0038] Figure 5 It is a structural schematic diagram of a coal bunker anti-burst device in Example 2;

[0039] Figure 6 is a schematic diagram of the partial structure of the water collecting tank in Example 2;

[0040] Figure 7 It is a structural schematic diagram of a coal bunker anti-burst device in Example 3;

[0041] Figure 8 yes Figure 7 AA cross-sectional structure diagram;

[0042] Fig. 9 is a schematic diagram of the partial structure of the water collecting tank in Example 3;

[0043] Fig.10 is a schematic diagram of the structure of the fan-shaped gate in Example 3;

[0044] In the figure: 1-feeding equipment, 2-anti-collapse gate, 3-fan gate, 3.1-arc gate plate, 3.2-fan side plate, 4-rotating shaft, 4.1-driving arm, 5-driving component, 6-hydraulic cylinder, 7-sensor, 7.1-level sensor, 7.2-humidity sensor, 7.3-liquid level sensor, 8-controller, 9-liquid collecting tank, 9.1-fixed tank, 9.2-movable tank, 9.3-movement mechanism, 9.31-slide rail, 9.32-hinge shaft, 10-driving member, 11-winch, 12-cylinder, 13-active fan gate, 14-driven fan gate, 15-driving structure, 15.1-bump. DETAILED DESCRIPTION

[0045] The technical solutions in the present invention are described clearly and completely below in combination with the embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example 1

[0047] A coal bunker anti-collapse device, such as Figures 1 to 4 As shown, it includes an anti-break gate 2 installed at the front end of the guide trough of the feeding device 1, and the anti-break gate 2 includes a fan-shaped gate 3, a rotating shaft 4 and a driving component 5. The fan-shaped gate 3 includes an arc gate plate 3.1 and a fan-shaped side plate 3.2. The arc gate plate 3.1 is fixedly connected to the arc edge of the fan-shaped side plate 3.2. The center of the circle corresponding to the arc edge of the fan-shaped side plate 3.2 is provided with an axial hole that is matched with the rotating shaft 4. After the rotating shaft 4 passes through the axial hole, the two ends of the rotating shaft 4 are supported by the two side walls of the guide trough of the feeding device 1. The support point of the rotating shaft 4 is arranged at the upper part of the outlet end of the material guide trough of the feeding device 1, and the arc gate plate 3.1 is close to the receiving end of the material guide trough of the feeding device 1 relative to the rotating shaft 4. The driving component 5 drives the fan-shaped gate 3 to rotate with the rotating shaft 4 as the axis. When the fan-shaped gate 3 rotates downward to close, the left and right sides of the arc gate plate 3.1 are coupled with the two side walls of the material guide trough of the feeding device 1, and the lower end of the arc gate plate 3.1 is coupled with the bottom surface of the feeding cavity of the feeding device 1, so that the entire cross-section of the feeding cavity is closed.

[0048] One end of the driving component 5 is connected to the sector gate 3, and the other end is connected to the foundation.

[0049] The driving component 5 is a hydraulic cylinder 6, and may also be a pneumatic cylinder, an electric cylinder or a winch.

[0050] The coal bunker anti-burst device also includes a sensor 7 and a controller 8. The sensor 7 is connected to the controller 8. The sensor 7 sends a signal when the bunker is breached to the controller 8. The controller 8 can control the anti-burst gate 2 to close. The sensor 7 includes a material level sensor 7.1, a humidity sensor 7.2 and a liquid level sensor 7.3.

[0051] The material level sensor 7.1 is arranged in front of the outlet of the material guide chute of the feeding device 1 which exceeds the normal feeding material level of the feeding device 1.

[0052] The material level sensor 7.1 is arranged on the top of the material guide trough of the feeding device 1.

[0053] The humidity sensor 7.2 is arranged in the coal bunker opening where the feeding device 1 is installed, and is used to detect the moisture content of the material in the bunker opening.

[0054] The liquid level sensor 7.3 is arranged in a liquid collecting tank 9, which is arranged below the feeding device 1 and is used to collect water leaking from the coal bunker when the feeding device 1 stops.

[0055] The liquid collecting tank 9 includes a fixed tank 9.1 and a movable tank 9.2. The fixed tank 9.1 is arranged at the lower part of the feeding device 1. The movable tank 9.2 is arranged at the lower part of the front end of the fixed tank 9.1 through a moving mechanism 9.3. The liquid level sensor 7.3 is arranged in the movable tank 9.2. When the feeding device 1 stops, the movable tank 9.2 moves to the bottom of the slot of the fixed tank 9.1 to collect the water flowing down from the fixed tank 9.1. When the feeding device 1 starts, the movable tank 9.2 moves to the bottom of the fixed tank 9.1 to prevent materials from entering the movable tank 9.2.

[0056] The movement mechanism 9.3 is a fixed slot 9.1 with a slide rail 9.31 at the lower front end, the movable slot 9.2 is coupled to the slide rail 9.31, and a driving member 10 is provided at the rear end of the movable slot 9.2. The driving member 10 can drive the movable slot 9.2 to slide along the slide rail 9.31.

[0057] The driving member 10 is a hydraulic cylinder 6, and may also be a pneumatic cylinder, an electric cylinder or a winch.

[0058] In order to facilitate the water to flow out from the slot, the bottom of the fixed slot 9.1 is inclined downward from the back to the front.

[0059] When the anti-break gate 2 is closed, the sector gate 3 rotates downward around the rotating shaft 4 to cut off the moving material. The moving material squeezes the arc gate plate 3.1. The torque formed by the force acting on the arc gate plate 3.1 by the moving material is in the same direction as the torque required for closing the gate, so that the sector gate 3 can be closed quickly.

[0060] Example 2

[0061] like Figures 5 and 6 As shown, the driving component 5 is a winch 11. The driving component 10 is a winch 11.

[0062] The rest is the same as in Example 1.

[0063] Example 3

[0064] like Figures 7 to 10 As shown, the anti-burst gate 2 includes a plurality of mutually nested and coaxially arranged sector gates 3, and the arc gate plates 3.1 of the plurality of mutually nested and coaxially arranged sector gates 3 constitute a stacked structure with different radii. When the sector gates 3 are opened, the plurality of mutually nested and coaxially arranged sector gates 3 can be overlapped and folded to reduce the occupied space.

[0065] The plurality of mutually nested and coaxially arranged sector gates 3 include an active sector gate 13 and a plurality of driven sector gates 14. A driving structure 15 is provided between adjacent sector gates 3. The axial hole of the active sector gate 13 is connected to the rotating shaft 4. The rotating shaft 4 drives the active sector gate 13 to rotate. The axial hole of the driven sector gate 14 is rotatably connected to the rotating shaft 4. Both ends of the rotating shaft 4 are fixed to both sides of the material guide trough of the feeding device 1 through bearing seats. A driving arm 4.1 is provided at the end of the rotating shaft 4. One end of the driving component 5 is connected to the driving arm 4.1, and the other end is installed on the material guide trough of the feeding device 1.

[0066] The driving component 5 drives the active sector gate 13 , and the active sector gate 13 can open or close the driven sector gate 14 through the driving structure 15 .

[0067] The driving structure 15 is a mating convex block 15.1 arranged on the sector gate 3, and can also be key-connected.

[0068] The driving component 5 is a cylinder 12, and may also be a hydraulic cylinder, an electric cylinder or a winch.

[0069] The liquid collecting tank 9 is arranged below the feeding device 1 and is used to collect water leaking from the coal bunker when the feeding device 1 stops.

[0070] The liquid collecting tank 9 includes a fixed tank 9.1 and a movable tank 9.2. The fixed tank 9.1 is arranged at the lower part of the feeding device 1. The movable tank 9.2 is arranged at the lower part of the front end of the fixed tank 9.1 through a moving mechanism 9.3. The liquid level sensor 7.3 is arranged in the movable tank 9.2. When the feeding device 1 stops, the movable tank 9.2 moves to the bottom of the slot of the fixed tank 9.1 to collect the water flowing down from the fixed tank 9.1. When the feeding device 1 starts, the movable tank 9.2 moves to the bottom of the fixed tank 9.1 to prevent materials from entering the movable tank 9.2.

[0071] The movement mechanism 9.3 is a movable slot 9.2 connected to the fixed slot 9.1 through a hinge shaft 9.32. A driving member 10 is provided at the rear end of the movable slot 9.2. The driving member 10 can drive the movable slot 9.2 to rotate around the hinge shaft 9.32.

[0072] The driving member 10 is a cylinder 12, and may also be a hydraulic cylinder, an electric cylinder or a winch.

[0073] The rest is the same as in Example 1.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A coal bunker anti-collapse device, comprising an anti-collapse gate (2) installed at the front end of a feed chute of a feeding device (1), characterized in that: The anti-break gate (2) comprises a fan-shaped gate (3), a rotating shaft (4) and a driving component (5). The fan-shaped gate (3) comprises an arc gate plate (3.1) and a fan-shaped side plate (3.2). The arc gate plate (3.1) is fixedly connected to the arc edge of the fan-shaped side plate (3.2). The center of the circle corresponding to the arc edge of the fan-shaped side plate (3.2) is provided with an axial hole for matching with the rotating shaft (4). After the rotating shaft (4) passes through the axial hole, the two ends are supported by the two side walls of the guide trough of the feeding device (1). The supporting point of the rotating shaft (4) is arranged close to the fan-shaped side plate (3.2). At the upper part of the outlet end of the material guide trough of the feeding device (1), the arc gate plate (3.1) is close to the receiving end of the material guide trough of the feeding device (1) relative to the rotating shaft (4), and the driving component (5) drives the fan-shaped gate (3) to rotate with the rotating shaft (4) as the axis. When the fan-shaped gate (3) rotates downward to close, the left and right sides of the arc gate plate (3.1) are coupled with the side walls of the material guide trough of the feeding device (1), and the lower end of the arc gate plate (3.1) is coupled with the bottom surface of the material delivery cavity of the feeding device (1), so that the entire cross-section of the material delivery cavity is closed.

2. A coal bunker anti-collapse device according to claim 1, characterized in that: One end of the driving component (5) is connected to the sector gate (3), and the other end is connected to the foundation.

3. A coal bunker anti-collapse device according to claim 1, characterized in that: The shaft hole of the sector gate (3) is connected to the rotating shaft (4), and the rotating shaft (4) drives the sector gate (3) to rotate. The two ends of the rotating shaft (4) are fixed to the two sides of the guide trough of the feeding device (1) through bearing seats. A driving arm (4.1) is provided at the end of the rotating shaft (4). One end of the driving component (5) is connected to the driving arm (4.1), and the other end is installed on the guide trough of the feeding device (1).

4. A coal bunker anti-collapse device according to claim 1, characterized in that: The anti-break gate (2) comprises a plurality of mutually nested coaxially arranged sector gates (3), wherein the arc gate plates (3.1) of the plurality of mutually nested coaxially arranged sector gates (3) form a stacked structure with different radii. When the sector gates (3) are opened, the plurality of mutually nested coaxially arranged sector gates (3) can be overlapped and folded to reduce the occupied space.

5. A coal bunker anti-collapse device according to claim 4, characterized in that: The plurality of mutually nested and coaxially arranged sector gates (3) include an active sector gate (13) and a plurality of driven sector gates (14); a driving structure (15) is provided between adjacent sector gates (3); a driving component (5) drives the active sector gate (13); and the active sector gate (13) can open or close the driven sector gate (14) through the driving structure (15).

6. A coal bunker anti-collapse device according to claim 5, characterized in that: The driving structure (15) is a projection (15.1) arranged on the sector gate (3) and cooperating with each other.

7. A coal bunker anti-collapse device according to claim 1 or 4, characterized in that: The invention also comprises a sensor (7) and a controller (8), wherein the sensor (7) is connected to the controller (8), and the sensor (7) sends a signal when a warehouse collapses to the controller (8), and the controller (8) can control the anti-warehouse collapse gate (2) to close, and the sensor (7) comprises a material level sensor (7.1), a humidity sensor (7.2) and / or a liquid level sensor (7.3).

8. A coal bunker anti-collapse device according to claim 7, characterized in that: The material level sensor (7.1) is arranged at the front of the outlet of the material guide trough of the feeding device (1) which exceeds the normal feeding material level of the feeding device (1).

9. A coal bunker anti-collapse device according to claim 7, characterized in that: The material level sensor (7.1) is arranged on the top of the material guide trough of the feeding device (1).

10. A coal bunker anti-collapse device according to claim 7, characterized in that: The humidity sensor (7.2) is arranged in the coal bunker opening where the feeding device (1) is installed, and is used to detect the moisture content of the material in the bunker opening.

11. A coal bunker anti-collapse device according to claim 7, characterized in that: The liquid level sensor (7.3) is arranged in a liquid collecting tank (9), and the liquid collecting tank (9) is arranged below the feeding device (1) and is used to collect water leaking from the coal bunker when the feeding device (1) stops.

12. A coal bunker anti-collapse device according to claim 11, characterized in that: The liquid collecting trough (9) comprises a fixed trough (9.1) and a movable trough (9.2); the fixed trough (9.1) is arranged at the lower part of the feeding device (1); the movable trough (9.2) is arranged at the lower part of the front end of the fixed trough (9.1) through a moving mechanism (9.3); the liquid level sensor (7.3) is arranged in the movable trough (9.2); when the feeding device (1) stops, the movable trough (9.2) moves to the lower part of the notch of the fixed trough (9.1) to collect water flowing down from the fixed trough (9.1); when the feeding device (1) starts, the movable trough (9.2) moves to the lower part of the fixed trough (9.1) to prevent materials from entering the movable trough (9.2).

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