An automatic anti-blocking device for coal chutes and its usage method

Abstract

The present invention relates to an automatic anti-blocking device for a coal chute, which includes a control component and a first sleeve, a first roller, a second sleeve, a second roller and a fixed connection cylinder arranged from top to bottom. The bottom end of the first sleeve is rotatably connected to the top end of the first roller, the bottom end of the first roller is rotatably connected to the top end of the second sleeve, the bottom end of the second sleeve is rotatably connected to the top end of the second roller, and the bottom end of the second roller is rotatably connected to the top end of the fixed connection cylinder. The outer walls of the first roller and the second roller are both fixedly sleeved with transmission steel belts, and stirring protrusion blocks are welded to the inner walls. Gear teeth are welded to the outer walls of the transmission steel belts. A gravity sensor is fixedly installed on the inner wall of the fixed connection cylinder. The present invention can prevent the coal outlet from being blocked, has a high degree of automation, can achieve unmanned supervision and management, has repeatability, and can greatly avoid the occurrence of serious safety accidents.

Description

Technical Field

[0001] The present invention belongs to the technical field of mining machinery, and particularly relates to an automatic anti-blocking device for coal chutes and a using method thereof. Background Art

[0002] Coal chutes play a key role in the coal transportation process, undertaking the dual tasks of coal chuting and temporary coal storage. There are many reasons for coal chute blockages, mainly including hydrogeology, parameter settings, construction quality, and daily management. Once a blockage occurs, it will cause the transportation system to be temporarily interrupted at the least, and force a mining area or even the entire mine to stop production at the worst. Currently, the commonly used methods for dealing with blockages are as follows: 1. Manual dredging method. Manual dredging can only be used for less severe blockages. If the blockage is severe, manual dredging will not work, and the safety of construction workers is poor, and the labor intensity of workers is high. 2. Explosive dredging method. Explosives are strictly controlled, the operation cycle is long, and the explosion generates sparks, which is likely to cause other explosion accidents. 3. Air cannon dredging method. The operation is complex and the flexibility is poor. 4. Hydraulic fracturing. The waste of water resources is serious, and at the same time, it makes the on-site construction environment bad, affecting the smooth progress of subsequent construction operations.

[0003] In view of the above problems, although a method of using high-pressure gas blasting for meteorological fracturing and dredging has been developed, in construction, it is often necessary to first drill positioning holes and then arrange fracturing equipment. Therefore, the construction difficulty is large, the construction efficiency is low, and during the drilling operation, fracturing equipment arrangement and recovery operations, manual operations by workers are required, which greatly reduces the work efficiency and increases the labor intensity and work cost of the workers. Therefore, an automatic anti-blocking device for coal chutes and a using method thereof are proposed, which can prevent blockages, have a high degree of automation, can achieve unmanned supervision and management, and have repeatability, and can greatly avoid the occurrence of serious safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an automatic anti-blocking device for coal chutes and a using method thereof, which can prevent blockages, have a high degree of automation, can achieve unmanned supervision and management, and have repeatability, and can greatly avoid the occurrence of serious safety accidents.

[0005] The technical solution adopted by the present invention is as follows: An automatic coal chute anti-blocking device includes a control component and an anti-blocking component. The anti-blocking component includes a first sleeve, a first roller, a second sleeve, a second roller, and a fixed connection cylinder arranged from top to bottom. The bottom end of the first sleeve is rotatably connected to the top end of the first roller. The bottom end of the first roller is rotatably connected to the top end of the second sleeve. The bottom end of the second sleeve is rotatably connected to the top end of the second roller. The bottom end of the second roller is rotatably connected to the top end of the fixed connection cylinder. Gear teeth are welded on the outer side walls of the first roller and the second roller, and stirring convex blocks are welded on the inner side walls. A gravity sensor is fixedly installed on the inner side wall of the fixed connection cylinder;

[0006] The control component includes a monitoring device, a driving motor, and a transmission mechanism. The output end of the gravity sensor is connected to the input end of the monitoring device. The output end of the monitoring device is connected to the input end of the driving motor. The output end of the driving motor is connected to the transmission mechanism. The transmission mechanism is connected with a transmission steel belt, and the transmission steel belt is engaged with the gear teeth.

[0007] Preferably, chutes are opened at the bottom end of the first sleeve, the top end and the bottom end of the second sleeve. Pulleys are fixedly connected to the top end and the bottom end of the first roller and the top end of the second roller. The pulleys are located in the corresponding chutes.

[0008] Preferably, the joint gaps between the first sleeve, the first roller, the second sleeve, and the second roller do not exceed 20 mm, and brushes are provided at the joints.

[0009] Preferably, grooves are circumferentially opened at the bottom end of the second roller and the top end of the fixed connection cylinder, and balls are filled in the grooves.

[0010] Preferably, the cross-section of the second roller is funnel-shaped, and the generatrix forms an angle of 35 - 60° with the axis. The cross-section of the fixed connection cylinder is funnel-shaped, and the top end of the fixed connection cylinder matches the bottom end of the second roller in size.

[0011] Preferably, there are no less than four gravity sensors, which are equally spaced on the inner side wall of the fixed connection cylinder.

[0012] Preferably, wire outlet reserved holes are opened on the surface of the fixed connection cylinder for installing the connecting wires used to connect the gravity sensor and the monitoring device.

[0013] Preferably, fixing holes are opened on the surfaces of the first sleeve, the second sleeve, and the fixed connection cylinder for installing bolts or bolt cables during use.

[0014] A method for using an automatic coal chute anti-blocking device includes the following steps:

[0015] Step 1): Assemble the equipment at the lower part of the coal chute: Install the fixed ends of the anchor bolts or cable bolts in the fixed holes of the first sleeve, the second sleeve and the fixed connection cylinder, and fix the other ends of the anchor bolts or cable bolts on the wall of the coal chute. Excavate a chamber on the wall of the coal chute according to the required space and position of the control component, and install the control component in the chamber.

[0016] Step 2): Preset the thresholds: Determine the coal storage weight according to the volume of the coal bunker, and set five thresholds. The first threshold is the warning threshold, and the equipment does not work. The second threshold is the preparatory threshold, and the equipment enters the preparation work. The third threshold is the pre-operation threshold, and the first roller rotates clockwise. The fourth threshold is the working threshold, and the second roller rotates counterclockwise. The fifth threshold is the gear threshold, which is used to control the transmission mechanism to change the output power ratio.

[0017] Advantages of the present invention: Through the coordinated setting of the gravity sensor, the control component, the two rollers and the stirring convex blocks, when the gravity sensor senses that a certain amount of coal has accumulated at the coal outlet, the sensing result is transmitted to the monitoring device, and the driving motor and the corresponding transmission mechanism are controlled to start working, driving the rotation of the first roller or the two rollers. The stirring convex blocks rotate and loosen the coal powder accumulated on the inner wall and make it fall, which has the effect of preventing the coal outlet from being blocked. Moreover, the present invention has a high degree of automation, can realize unmanned supervision and management, and has repeatability, which can greatly avoid the occurrence of serious safety accidents. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the anti-blocking component of the present invention;

[0020] Figure 3 It is another schematic structural diagram of the anti-blocking component of the present invention;

[0021] Figure 4 It is a top view of the anti-blocking component of the present invention;

[0022] Figure 5 It is a schematic sectional structural diagram of the anti-blocking component of the present invention.

[0023] In the figure: 1. First sleeve 2. First roller 3. Second sleeve 4. Second roller 5. Fixed connection cylinder 6. Transmission steel belt 7. Stirring convex block 8. Gear teeth 9. Gravity sensor 10. Monitoring device 11. Driving motor 12. Transmission mechanism 13. Chute 14. Pulley 15. Brush 16. Groove 17. Ball 18. Outlet reserved hole 19. Connecting wire 20. Fixed hole. Detailed Embodiments

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The following will be specifically described in conjunction with the embodiments.

[0025] Embodiment 1

[0026] As Figures 1-5 shown, an automatic coal chute anti-blocking device includes a control component and an anti-blocking component. The anti-blocking component includes a first sleeve 1, a first roller 2, a second sleeve 3, a second roller 4 and a fixed connection cylinder 5 arranged from top to bottom. The bottom end of the first sleeve 1 is rotatably connected to the top end of the first roller 2. The bottom end of the first roller 2 is rotatably connected to the top end of the second sleeve 3. The bottom end of the second sleeve 3 is rotatably connected to the top end of the second roller 4. The bottom end of the second roller 4 is rotatably connected to the top end of the fixed connection cylinder 5. Gear teeth 8 are welded on the outer side walls of the first roller 2 and the second roller 4, and stirring convex blocks 7 are welded on the inner side walls. A gravity sensor 9 is fixedly installed on the inner side wall of the fixed connection cylinder 5;

[0027] The control component includes a monitoring device 10, a driving motor 11 and a transmission mechanism 12. The output end of the gravity sensor 9 is connected to the input end of the monitoring device 10. The output end of the monitoring device 10 is connected to the input end of the driving motor 11. The output end of the driving motor 11 is connected to the transmission mechanism 12. The transmission mechanism 12 is connected with a transmission steel belt 6, and the transmission steel belt 6 is engaged with the gear teeth 8.

[0028] A usage method of an automatic coal chute anti-blocking device is characterized by including the following steps:

[0029] Step 1): Assemble the equipment at the lower part of the coal chute: Install the fixed ends of bolts or cable bolts in the fixing holes 20 of the first sleeve 1, the second sleeve 3 and the fixed connection cylinder 5, and fix the other ends of the bolts or cable bolts on the coal chute wall. Excavate a chamber on the coal chute wall according to the required space and position of the control component, and install the control component in the chamber;

[0030] Step 2): Preset thresholds: Determine the coal storage weight according to the coal bunker volume, and set five thresholds. The first threshold is the warning threshold, and the equipment does not work. The second threshold is the preparation threshold, and the equipment enters the preparation work. The third threshold is the pre-work threshold, and the first roller 2 rotates clockwise. The fourth threshold is the working threshold, and the second roller 4 rotates counterclockwise. The fifth threshold is the gear position threshold, which is used to control the transmission mechanism 12 to change the output power ratio to speed up or slow down the rotation speed of the first roller 2 and the second roller 4.

[0031] In use, the coal chute anti-blocking device of the present invention is installed at the lower part of the coal chute. The outlet formed by the second roller 4 and the fixed connection cylinder 5 is installed corresponding to the coal outlet. The first sleeve 1, the second sleeve 3 and the fixed connection cylinder 5 are fixed to the wall of the coal chute with bolts or cable bolts. Then, a chamber is excavated on the wall of the coal chute, and the control component is installed in the chamber. Five thresholds are set according to the capacity of the coal bunker and the stored coal weight. The gravity sensor 9 can sense the coal quantity. When the first threshold is reached, the gravity sensor 9 transmits the sensing result to the monitoring device 10 but the device does not work. When the second threshold is reached, the device enters the preparation work, and the gravity sensor 9 transmits the sensing result to the monitoring device 10. When the third threshold is reached, the gravity sensor 9 still transmits the sensing result to the monitoring device 10. The monitoring device 10 controls the driving motor 11 to start working and controls the transmission mechanism 12 connected to the first roller 2 to work, driving the transmission steel belt 6 and the gear teeth 8 engaged with it to rotate, and then driving the clockwise rotation of the first roller 2. During the rotation process, the multiple stirring protrusion blocks 7 on the inner wall of the first roller 2 rotate with the first roller 2, so that the blocked pulverized coal is loosened and falls from the bottom outlet. When the fourth threshold is reached, at this time, there is more coal in the fixed connection cylinder 5. The driving motor 11 drives the transmission mechanism 12 that controls the second roller 4 to work and drives the counterclockwise rotation of the second roller 4. Under the combined action of the first roller 2 and the second roller 4, the stirring range is increased, and the stirring effect of the stirring protrusion blocks 7 is enhanced by the cooperation of the clockwise and counterclockwise rotation directions, thereby preventing the blockage of pulverized coal. Moreover, the present invention has a high degree of automation and does not require manual supervision and management, which can greatly avoid the occurrence of serious safety accidents.

[0032] Embodiment 2

[0033] As Figures 1-5 shown, an automated coal chute anti-blocking device includes a control component and an anti-blocking component. The anti-blocking component includes a first sleeve 1, a first roller 2, a second sleeve 3, a second roller 4 and a fixed connection cylinder 5 arranged from top to bottom. The bottom end of the first sleeve 1 is rotatably connected to the top end of the first roller 2. The bottom end of the first roller 2 is rotatably connected to the top end of the second sleeve 3. The bottom end of the second sleeve 3 is rotatably connected to the top end of the second roller 4. The bottom end of the second roller 4 is rotatably connected to the top end of the fixed connection cylinder 5. Gear teeth 8 are welded on the outer side walls of the first roller 2 and the second roller 4, and stirring protrusion blocks 7 are welded on the inner side walls. A gravity sensor 9 is fixedly installed on the inner side wall of the fixed connection cylinder 5;

[0034] The control component includes a monitoring device 10, a driving motor 11, and a transmission mechanism 12. The output end of the gravity sensor 9 is connected to the input end of the monitoring device 10. The output end of the monitoring device 10 is connected to the input end of the driving motor 11. The output end of the driving motor 11 is connected to the transmission mechanism 12. The transmission mechanism 12 is connected to a transmission steel belt 6, and the transmission steel belt 6 meshes with the gear teeth 8.

[0035] For better effect, chutes 13 are provided at the bottom end of the first sleeve 1, the top and bottom ends of the second sleeve 3. Pulley 14 are fixedly connected to the top and bottom ends of the first roller 2 and the top end of the second roller 4. The pulley 14 is located within the corresponding chute 13, and the pulley 14 can slide circumferentially within the chute 13, thereby realizing the rotation of the first roller 2 and the second roller 4.

[0036] For better effect, the joint gaps between the first sleeve 1, the first roller 2, the second sleeve 3, and the second roller 4 do not exceed 20 mm, and a brush 15 is provided at the joint to block the entry of coal dust.

[0037] For better effect, grooves 16 are circumferentially provided at the bottom end of the second roller 4 and the top end of the fixed connection cylinder 5. Ball bearings 17 are filled in the grooves 16 to realize the rotational connection between the second roller 4 and the fixed connection cylinder 5.

[0038] For better effect, the cross-section of the second roller 4 is in a funnel shape, and the generatrix forms an angle of 35 - 60° with the axis. The cross-section of the fixed connection cylinder 5 is in a funnel shape. The top end of the fixed connection cylinder 5 matches the bottom end size of the second roller 4, and the fixed connection cylinder 5 and the second roller 4 cooperate to form a funnel-shaped outlet.

[0039] For better effect, there are at least four gravity sensors 9, which are equally spaced and distributed on the inner side wall of the fixed connection cylinder 5, used to sense the amount of coal accumulated on the inner side wall of the second roller 4 and send the sensing result to the monitoring device 10.

[0040] For better effect, a wire outlet reserved hole 18 is provided on the surface of the fixed connection cylinder 5 for installing the connecting wire 19 used for connecting the gravity sensor 9 and the monitoring device 10.

[0041] For better effect, fixing holes 20 are provided on the surfaces of the first sleeve 1, the second sleeve 3, and the fixed connection cylinder 5 for the installation of anchor bolts or anchor cables during use, thereby realizing the fixation of the first sleeve 1, the second sleeve 3, and the fixed connection cylinder 5.

[0042] A method for using an automatic coal chute anti-blocking device is characterized by including the following steps:

[0043] Step 1): Assemble the equipment at the lower part of the coal chute: Install the fixed ends of bolts or cable bolts in the fixing holes 20 of the first sleeve 1, the second sleeve 3 and the fixed connection cylinder 5, and fix the other ends of the bolts or cable bolts on the wall of the coal chute. Excavate a chamber on the wall of the coal chute according to the required space and position of the control component, and install the control component in the chamber;

[0044] Step 2): Preset thresholds: Determine the coal storage weight according to the volume of the coal bunker, and set five thresholds. The first threshold is the warning threshold, and the equipment does not work. The second threshold is the preparation threshold, and the equipment enters the preparation work. The third threshold is the pre-operation threshold, and the first roller 2 rotates clockwise. The fourth threshold is the operation threshold, and the second roller 4 rotates counterclockwise. The fifth threshold is the gear threshold, which is used to control the transmission mechanism 12 to change the output power ratio to speed up or slow down the rotation speed of the first roller 2 and the second roller 4.

[0045] During use, install the coal chute anti-blocking device of the present invention at the lower part of the coal chute. The funnel-shaped outlet formed by the second roller 4 and the fixed connection cylinder 5 is installed corresponding to the coal outlet. Insert one end of a bolt or a cable bolt into the fixing hole 20 of the first sleeve 1, the second sleeve 3 and the fixed connection cylinder 5, and fix the other end on the wall of the coal chute. Then, excavate a chamber on the wall of the coal chute and install the control component in the chamber. According to the capacity of the coal bunker and the coal storage weight, set five thresholds. The gravity sensor 9 can sense the coal quantity. When the first threshold is reached, the gravity sensor 9 transmits the sensing result to the monitoring device 10, but the equipment does not work. When the second threshold is reached, the equipment enters the preparation work, and the gravity sensor 9 transmits the sensing result to the monitoring device 10. When the third threshold is reached, the gravity sensor 9 still transmits the sensing result to the monitoring device 10. The monitoring device 10 controls the driving motor 11 to start working and controls the transmission mechanism 12 connected to the first roller 2 to work, driving the transmission steel belt 6 and the gear teeth 8 engaged with it to rotate, and then driving the first roller 2 to rotate clockwise. During the rotation, the multiple stirring protrusion blocks 7 on the inner wall of the first roller 2 rotate with the first roller 2, so that the blocked pulverized coal is loosened and falls from the bottom outlet. When the fourth threshold is reached, at this time, there is more coal in the fixed connection cylinder 5. The driving motor 11 drives the transmission mechanism 12 that controls the second roller 4 to work and drives the second roller 4 to rotate counterclockwise. Under the combined action of the first roller 2 and the second roller 4, the stirring range is increased, and the two rotation directions of clockwise and counterclockwise cooperate to enhance the stirring effect of the stirring protrusion blocks 7, thereby preventing the blockage of pulverized coal. Moreover, the present invention has a high degree of automation and does not require manual supervision and management, which can greatly avoid the occurrence of serious safety accidents.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A method for using an automatic coal chute anti-blocking device, characterized in that: It includes an automatic coal chute anti-blocking device. The automatic coal chute anti-blocking device includes a control component and an anti-blocking component. The anti-blocking component includes a first sleeve, a first roller, a second sleeve, a second roller, and a fixed connection cylinder arranged from top to bottom. The bottom end of the first sleeve is rotatably connected to the top end of the first roller. The bottom end of the first roller is rotatably connected to the top end of the second sleeve. The bottom end of the second sleeve is rotatably connected to the top end of the second roller. The bottom end of the second roller is rotatably connected to the top end of the fixed connection cylinder. Gear teeth are welded on the outer side walls of the first roller and the second roller, and stirring convex blocks are welded on the inner side walls. A gravity sensor is fixedly installed on the inner side wall of the fixed connection cylinder; The control component includes a monitoring device, a driving motor, and a transmission mechanism. The output end of the gravity sensor is connected to the input end of the monitoring device. The output end of the monitoring device is connected to the input end of the driving motor. The output end of the driving motor is connected to the transmission mechanism. The transmission mechanism is connected with a transmission steel belt, and the transmission steel belt is engaged with the gear teeth; Chute grooves are opened at the bottom end of the first sleeve, the top end and the bottom end of the second sleeve. Pulley wheels are fixedly connected to the top end and the bottom end of the first roller and the top end of the second roller. The pulley wheels are located in the corresponding chute grooves; The joint gaps between the first sleeve, the first roller, the second sleeve, and the second roller do not exceed 20 mm, and brushes are arranged at the joints; Grooves are circumferentially opened at the bottom end of the second roller and the top end of the fixed connection cylinder, and balls are filled in the grooves; The usage method includes the following steps: Step 1): Assemble the equipment at the lower part of the coal chute: Install the fixed ends of bolts or cable bolts in the fixing holes of the first sleeve, the second sleeve, and the fixed connection cylinder, and fix the other ends of the bolts or cable bolts on the coal chute wall. Excavate a chamber on the coal chute wall according to the required space and position of the control component, and install the control component in the chamber; Step 2): Preset thresholds: Determine the coal storage weight according to the coal bunker volume, and set five thresholds. The first threshold is the warning threshold, and the equipment does not work. The second threshold is the preparatory threshold, and the equipment enters the preparatory work. The third threshold is the pre-operation threshold, and the first roller rotates clockwise. The fourth threshold is the working threshold, and the second roller rotates counterclockwise. The fifth threshold is the gear threshold, which is used to control the transmission mechanism to change the output power ratio.

2. The method for using an automatic coal chute anti-blocking device according to claim 1, characterized in that: The cross-section of the second roller is funnel-shaped, and the generatrix forms an angle of 35-60° with the axis. The cross-section of the fixed connection cylinder is funnel-shaped, and the top end of the fixed connection cylinder matches the bottom end size of the second roller.

3. The method for using an automatic coal chute anti-blocking device according to claim 1, characterized in that: There are no less than four gravity sensors, which are equally spaced on the inner side wall of the fixed connection cylinder.

4. The method for using an automatic coal chute anti-blocking device according to claim 1, characterized in that: A wire outlet reserved hole is opened on the surface of the fixed connection cylinder for installing the connecting wire used for connecting the gravity sensor and the monitoring device.

5. The method for using an automatic coal chute anti-blocking device according to claim 1, characterized in that: Fixing holes are opened on the surfaces of the first sleeve, the second sleeve, and the fixed connection cylinder for installing bolts or cable bolts during use.

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