Coal bunker anti-blocking device

Abstract

An anti-blocking device for a coal bunker belongs to the technical field of coal storage equipment, solves the technical problem that the coal bunker is blocked due to many factors, and adopts the technical scheme that the upper part of the coal bunker is provided with a straight-barrel coal bunker, and the lower part of the coal bunker is provided with a conical-barrel coal bunker, on one hand, a universal flexible shaft, a stirring rod, a spiral stirring blade and cutting teeth are arranged in an inner cavity of the straight-barrel coal bunker; the blocked coal body is stirred; on the other hand, a vibration motor set and a vibration cover plate are arranged on the inner wall of the conical barrel coal bunker, and wave vibration is conducted on the coal body in the inner cavity of the conical barrel coal bunker. The coal bunker blocking device can effectively solve the problems of shed arching, wall sticking, bunker blocking and foreign matter blocking which are prone to occurring in coal bunker blocking, manual blocking clearing is not needed, and guarantee is provided for efficient operation and safe and uninterrupted production in the coal mining process.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal storage equipment, and particularly relates to a coal bunker anti-blocking device. Background Art

[0002] The coal bunker in a coal mine is a node in the coal mining system, and the coal bunker has the following important functions: 1) To solve the phenomenon of unbalanced transportation volumes in different transportation links during the coal production process, that is, to achieve transportation volume buffering through storage; 2) To be used for the adjustment during the switching of different transportation modes, such as the matching between intermittent transportation (mine car transportation) and continuous transportation (belt transportation); 3) To solve the transfer between high and low height differences. Thus, it can be seen that the coal bunker is an important part of the coal mining system, playing the roles of storage, buffering, adjustment, and continuous and stable operation, and is an important guarantee for realizing normal production transportation and safe and uninterrupted production.

[0003] According to the actual situation on site, coal blocks, gangue, as well as pit props, wires, rubber sheets, sundries, etc. during the production process fall into the coal bunker during transportation; underground water-containing coal, water leakage seeps in, and the coal mud caking enters the coal bunker; in addition, during the use of the coal bunker, due to dealing with accidents or the caking of pressed coal after a long-term interruption of transportation, it accumulates in the coal bunker. Summarizing the above actual situations, the main reasons for the formation of a blocked bunker in the coal bunker are as follows:

[0004] 1. The coal mud and coal water stick to the inner wall of the coal bunker, reducing the cross-section of the coal bunker;

[0005] 2. Spraying water during production operations causes water to flow into the coal bunker, and the muddy water cakes;

[0006] 3. The fall of foreign objects causes obstacles to the coal flow transportation with coal and coal blocks;

[0007] 4. The damage of the fence at the upper bunker opening of the coal bunker causes large coal rocks to fall into the coal bunker and block it;

[0008] 5. The reduction of the cross-section of the conical part at the lower bunker opening of the coal bunker causes extrusion and adhesion blockage;

[0009] 6. A natural arch shed of coal block fluid is formed in the coal bunker body, and it does not fall and blocks;

[0010] That is, arch shed (a stable structure formed during the coal stacking process, generally appearing in coal bunkers with a long storage time), wall sticking (coal and coal slime water adhere to the bunker wall and do not fall off, and the adhesion increases, resulting in a reduced coal flow space and poor flow), bunker blockage (commonly called rat holes, that is, only a very small space like a rat hole remains for coal flow, and the coal flow is very difficult), foreign object blockage (formed when pit props, wires, large stone materials or coal blocks (more than 30 cm) fall into the bunker during its use, hindering the normal downward flow of coal in the bunker). After encountering the above bunker blockage situations, the bunker function fails and cannot play its due role. Therefore, it is usually necessary to detonate or manually remove the blockage. The blasting risk is relatively high, so manual blockage removal is more common. However, when a large-area blockage is released instantaneously, it is like a "mudslide", and if the operator cannot dodge in time, they may be buried by the coal body, posing a hidden danger to the personal safety of the operator. Summary of the Invention

[0011] The main purpose of the present invention is to overcome the deficiencies in the prior art and solve the technical problem of coal bunker blockage caused by many factors. The present invention provides a coal bunker anti-blocking device.

[0012] The present invention is realized through the following technical solutions: A coal bunker anti-blocking device, which includes a coal bunker, a motor, a universal flexible shaft, a stirring rod and a vibration motor. The upper part of the coal bunker is set as a straight barrel coal bunker, and the lower part of the coal bunker is set as a conical barrel coal bunker. The stirring rod includes a primary stirring rod and a secondary stirring rod, wherein:

[0013] An air cylinder slide is arranged across the opening position at the top of the straight barrel coal bunker. A base is installed on the air cylinder slide. The motor is vertically and fixedly installed on the base. The rotating shaft of the motor is fixedly connected to the upper end of the universal flexible shaft. The lower end of the universal flexible shaft is hinged to the upper end of the primary stirring rod. The lower end of the primary stirring rod is hinged to the upper end of the secondary stirring rod. Spiral stirring blades are respectively arranged on the side walls of the primary stirring rod and the secondary stirring rod, and cutting teeth are arranged at the outer edge positions of the spiral stirring blades; A slide bar is arranged horizontally at the connection position between the straight barrel coal bunker and the conical barrel coal bunker inside the coal bunker. The slide bar is parallel to the air cylinder slide. A slide ring is sleeved on the slide bar. An ear seat is arranged on the side wall of the slide ring. The lower end of the secondary stirring rod is hinged to the ear seat;

[0014] At least two sets of vibration motor groups are arranged on the outer wall of the conical barrel coal bunker along the height direction of the conical barrel coal bunker. Each set of vibration motor groups includes several vibration motors evenly distributed along the circumferential direction. The vibration rods of the vibration motors penetrate the outer wall of the conical barrel coal bunker and extend into the coal bunker. A vibrating head is arranged at the end of the vibration rod. The cross section of the vibration cover plate is L-shaped. The vibration cover plate is buckled and covered above the vibrating head. The upper end edge of the vibration cover plate is hinged to the inner wall of the conical barrel coal bunker. The free end of the vibration cover plate corresponding to the upper vibration motor group overlaps the vibration cover plate corresponding to the lower vibration motor group.

[0015] Furthermore, an inverter is provided on the base, and the inverter is electrically connected to the motor.

[0016] Furthermore, the lower end of the universal flexible shaft is hinged to the upper end of the first-stage stirring rod, the lower end of the first-stage stirring rod is hinged to the upper end of the second-stage stirring rod, and the lower end of the second-stage stirring rod is hinged to the ear seat through a universal coupling.

[0017] Furthermore, at least two circles of vibration motor sets are spirally arranged along the outer wall of the conical coal bunker.

[0018] Furthermore, at least two circles of vibration motor sets vibrate successively from bottom to top, and the vibration motors in the same vibration motor set vibrate successively in the counterclockwise or clockwise direction, so that the vibration cover plate forms a vibration wave motion of shaftless rotation from bottom to top, clockwise or counterclockwise.

[0019] Furthermore, the opening at the top of the straight coal bunker is set to be circular, and the opening at the bottom of the conical coal bunker is set to be rectangular.

[0020] The beneficial effects of the present utility model are as follows:

[0021] By analyzing the reasons for the easy occurrence of blockage in the coal bunker and its prone positions, on the one hand, the present utility model stirs the blocked coal body by arranging a universal flexible shaft, a stirring rod, a spiral stirring blade and picks in the inner cavity of the straight coal bunker; on the other hand, vibration motor sets and vibration cover plates are arranged on the inner wall of the conical coal bunker to perform wave vibration on the coal body in the inner cavity of the conical coal bunker, effectively solving the phenomena of arching, wall sticking, bin obstruction and foreign object jamming prone to occur in coal bunker blockage, eliminating the need for manual blockage removal, and providing guarantee for the efficient operation and safe continuous production of the coal mining process. Description of the Drawings

[0022] Figure 1 It is a schematic front sectional structure view of the present utility model.

[0023] In the figure, 1 is a straight coal bunker, 2 is a conical coal bunker, 3 is a pneumatic slide table, 4 is a slide rod, 5 is a motor, 6 is a base, 7 is a universal flexible shaft, 8 is a first-stage stirring rod, 9 is a spiral stirring blade, 10 is a pick, 11 is a second-stage stirring rod, 12 is a slip ring, 13 is a vibration cover plate, 14 is a vibration motor, and 15 is a vibrating head. Specific Embodiments

[0024] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0025] As Figure 1A coal bunker anti-blocking device shown in the figure includes a coal bunker, a motor 5, a universal flexible shaft 7, a stirring rod, and a vibration motor 14. The upper part of the coal bunker is set as a straight barrel coal bunker 1, and the lower part of the coal bunker is set as a conical barrel coal bunker 2. The stirring rod includes a primary stirring rod 8 and a secondary stirring rod 11, where:

[0026] An air-powered slide 3 is arranged across the opening position at the top of the straight barrel coal bunker 1. A base 6 is installed on the air-powered slide 3. The motor 5 is vertically and downwardly fixedly installed on the base 6. The rotating shaft of the motor 5 is fixedly connected to the upper end of the universal flexible shaft 7. The lower end of the universal flexible shaft 7 is hinged to the upper end of the primary stirring rod 8. The lower end of the primary stirring rod 8 is hinged to the upper end of the secondary stirring rod 11. Spiral stirring blades 9 are respectively arranged on the side walls of the primary stirring rod 8 and the secondary stirring rod 11. Cutting teeth 10 are arranged at the outer edge position of the spiral stirring blades 9. A slide bar 4 is horizontally arranged at the connection position between the straight barrel coal bunker 1 and the conical barrel coal bunker 2 inside the coal bunker. The slide bar 4 is parallel to the air-powered slide 3. A slide ring 12 is sleeved on the slide bar 4. An ear seat is arranged on the side wall of the slide ring 12. The lower end of the secondary stirring rod 11 is hinged to the ear seat.

[0027] At least two circles of vibration motor groups are arranged along the height direction of the outer wall of the conical barrel coal bunker 2. Each group of vibration motor groups contains several vibration motors 14 evenly distributed along the circumferential direction. The vibration rods of the vibration motors 14 penetrate through the outer wall of the conical barrel coal bunker 2 and extend into the coal bunker. A vibrating head 15 is arranged at the end of the vibration rod. The cross-section of the vibration cover plate 13 is set as an L shape. The vibration cover plate 13 is buckled and covered above the vibrating head 15. The upper end edge of the vibration cover plate 13 is hinged to the inner wall of the conical barrel coal bunker 2. The free end of the vibration cover plate 13 corresponding to the upper vibration motor group overlaps on the vibration cover plate 13 corresponding to the lower vibration motor group.

[0028] Further, an inverter is arranged on the base 6, and the inverter is electrically connected to the motor 5.

[0029] Further, the lower end of the universal flexible shaft 7 and the upper end of the primary stirring rod 8, the lower end of the primary stirring rod 8 and the upper end of the secondary stirring rod 11, and the lower end of the secondary stirring rod 11 and the ear seat are all hinged through universal couplings.

[0030] Further, at least two circles of vibration motor groups are spirally arranged along the outer wall of the conical barrel coal bunker 2.

[0031] Further, at least two circles of vibration motor groups vibrate in sequence from bottom to top, and the vibration motors 14 in the same vibration motor group vibrate in sequence in the counterclockwise direction or the clockwise direction.

[0032] Further, the opening at the top of the straight barrel coal bunker 1 is set as a circle, and the opening at the bottom of the conical barrel coal bunker 2 is set as a rectangle.

[0033] The usage process of the present utility model is as follows:

[0034] The pneumatic slide table 3 reciprocates horizontally, and the slip ring 12 reciprocates along the slide bar 4 accordingly, increasing the stirring and cutting areas of the spiral stirring blade 9 and the pick 10. At the same time, the motor 5 is started. The motor 5 drives the primary stirring rod 8 and the secondary stirring rod 11 to rotate through the universal flexible shaft 7, and then drives the spiral stirring blade 9 and the pick 10 to perform stirring and cutting movements on the coal body in the straight coal bunker 1. When the universal coupling at the hinged positions of the universal flexible shaft 7, the primary stirring rod 8 and the secondary stirring rod 11 encounters a hard object, it can flexibly change the movement direction;

[0035] On this basis, the vibration motors 14 are started sequentially from bottom to top, clockwise or counterclockwise. The vibration motors 14 drive the vibration cover plate 13 to periodically open and close and vibrate around the hinged position through the vibrating heads 15. The device stirs and vibrates the coal body in multiple dimensions from bottom to top to make the coal body unstable and fall, solving problems such as arching, sticking to the wall, bin obstruction, and foreign object jamming that are prone to occur in coal bunker blockages;

[0036] After the blockage removal is completed, the pneumatic slide table 3 moves to a position close to the inner wall of the straight coal bunker 1, and the motor 5 and the vibration motors 14 stop working.

[0037] As a further improvement, sensors can be installed on each universal coupling respectively to monitor in real time the spatial positions and size ranges of phenomena such as arching, sticking to the wall, bin obstruction, and foreign object jamming in the coal bunker. Thus, the position of the pneumatic slide table 3, the rotation speed of the motor 5, and the vibration frequency of the vibration motors 14 can be remotely controlled through data transmission, the operating state can be adjusted in a timely manner, potential hazards can be investigated, and faults can be handled.

[0038] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A coal bunker anti-blocking device, comprising a coal bunker, a motor (5), a universal flexible shaft (7), a stirring rod and a vibration motor (14), wherein the upper part of the coal bunker is configured as a straight coal bunker (1), the lower part of the coal bunker is configured as a conical coal bunker (2), the stirring rod comprises a primary stirring rod (8) and a secondary stirring rod (11), and is characterized in that: A pneumatic slide (3) is arranged at an opening position across the top of the straight coal bunker (1), a base (6) is installed on the pneumatic slide (3), a motor (5) is fixedly installed on the base (6) vertically downward, a rotating shaft of the motor (5) is fixedly connected to the upper end of a universal flexible shaft (7), a lower end of the universal flexible shaft (7) is hinged to the upper end of a primary stirring rod (8), a lower end of the primary stirring rod (8) is hinged to the upper end of a secondary stirring rod (11), and a first stirring rod (8) and a second stirring rod (11) are hinged to each other. Spiral stirring blades (9) are respectively arranged on the side walls of the stirring rod (11), and pick teeth (10) are arranged at the outer edge positions of the spiral stirring blades (9); a sliding rod (4) is arranged in the horizontal direction at the connection position between the straight coal bunker (1) and the conical coal bunker (2) inside the coal bunker, the sliding rod (4) and the pneumatic slide table (3) are parallel to each other, a sliding ring (12) is mounted on the sliding rod (4), an ear seat is arranged on the side wall of the sliding ring (12), and the lower end of the secondary stirring rod (11) is hinged to the ear seat; At least two circles of vibration motor groups are arranged on the outer wall of the conical coal bunker (2) along the height direction of the conical coal bunker (2), each vibration motor group comprises a plurality of vibration motors (14) evenly distributed along the circumferential direction, a vibration rod of the vibration motor (14) penetrates the outer wall of the conical coal bunker (2) and extends into the coal bunker, a vibrating head (15) is arranged at the end of the vibration rod, the cross section of the vibration cover plate (13) is arranged in an L shape, the vibration cover plate (13) is invertedly arranged above the vibrating head (15), the upper edge of the vibration cover plate (13) is hinged on the inner wall of the conical coal bunker (2), and the free end of the vibration cover plate (13) corresponding to the vibration motor group located above is overlapped on the vibration cover plate (13) corresponding to the vibration motor group located below.

2. A coal bunker anti-blocking device according to claim 1, characterized in that: A frequency converter is arranged on the base (6), and the frequency converter is electrically connected to the motor (5).

3. A coal bunker anti-blocking device according to claim 1, characterized in that: The lower end of the universal flexible shaft (7) and the upper end of the primary stirring rod (8), the lower end of the primary stirring rod (8) and the upper end of the secondary stirring rod (11), and the lower end of the secondary stirring rod (11) and the ear seat are all hingedly connected through a universal coupling.

4. A coal bunker anti-blocking device according to claim 1, characterized in that: At least two circles of vibration motor groups are spirally arranged along the outer wall of the conical coal bin (2).

5. A coal bunker anti-blocking device according to claim 1 or 4, characterized in that: At least two circles of vibration motor groups vibrate sequentially from bottom to top, and the vibration motors (14) in the same vibration motor group vibrate sequentially in a counterclockwise direction or a clockwise direction.

6. A coal bunker anti-blocking device according to claim 1, characterized in that: The opening at the top of the straight coal bunker (1) is arranged in a circular shape, and the opening at the bottom of the conical coal bunker (2) is arranged in a rectangular shape.

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