A fully automatic continuous coal distribution device

Abstract

The present invention discloses a fully automatic continuous coal distribution device, including a driving pulley, a driven pulley, a belt, a speed reducer, a coal conveyor belt, a chain, a coal bunker, a coal discharging hopper, a driven sprocket, a coal plow lifting platform, a coal plow, a coal plow trolley, and a coal discharging channel. The device replaces the original fixed coal plow with a movable coal plow, and transforms the original fixed coal discharging port into two parallel coal discharging channels of the same length as the total width of the coal bunker; and further enables the coal plow to achieve reciprocating movement, forming a relative movement with the coal conveying belt, and finally ensuring that the coal on the coal conveying belt is evenly arranged in the coal bunker, solving the problem of separation of coal blocks and coal surfaces. The entire system controls the motor through a PLC to realize the lifting and reciprocating movement of the lead screw of the coal plow and the forward and reverse reciprocating movement. The entire device can improve the combustion efficiency of the boiler, achieve uniform mixing of coal, solve the problem of insufficient coal combustion, reduce the oxygen content of the boiler, thereby reducing the emission of nitrogen oxides and sulfides, and achieve the purpose of energy saving and emission reduction.

Description

Technical Field

[0001] The present invention relates to an automatic coal distribution device for coal transportation in coal mines, heating boilers, power plants, etc., and in particular to a full-automatic continuous coal distribution device for boilers. Background Art

[0002] With the development of my country's national economy, the boiler manufacturing industry has made great progress. The standards of the boiler industry have become increasingly standardized, the technical level has gradually improved, the scale of the industry has also expanded significantly, and the variety of products has also been increasing. However, in the development of this industry, resource waste and environmental damage are also very serious. Compared with developed countries, my country's coal-fired boilers have low combustion efficiency and high energy consumption. Therefore, improving the combustion efficiency of coal-fired boilers is of great significance to promoting the development of my country's economy. Energy is an important material basis for supporting and promoting the development of my country's national economy. For a long time, coal-fired boilers have faced the problems of low combustion efficiency and serious energy consumption. Therefore, improving the combustion efficiency of existing equipment has become a technical problem that needs to be solved urgently.

[0003] The coal distribution method has a significant impact on the combustion efficiency of the boiler. The traditional coal distribution method - the coal bunker adopts a fixed coal discharging method. Generally, there are two sets of corresponding coal ports on the coal bunker. This coal discharging method will cause the separation of lump coal and surface coal under the action of gravity and conical coal pile, resulting in the following three serious problems that need to be solved urgently: 1. Low combustion efficiency, mainly manifested in uneven distribution of coal blocks and coal surface, poor wind blowing, low coal surface ignition efficiency, uneven combustion, and poor effect; 2. Incomplete combustion, due to the large accumulation of coal surface, it cannot ignite, the carbon content of fly ash and large slag increases, resulting in a waste of coal resources; 3. Incomplete combustion will cause excessive oxygen content in the boiler, thereby generating a large amount of nitrogen oxides (NO x ), sulfide (SO x ) and other air pollutants. Removing these harmful substances will greatly increase production costs, indirectly causing excessively high costs and waste of resources. At the same time, the dust content will also increase, causing secondary environmental pollution.

[0004] At present, the existing fixed coal discharging method is arranged with a fixed coal plow, and the pressure of the coal plow is achieved by manually adjusting the rise and fall of the coal plow screw. In this way, it is difficult to grasp the appropriate pressure of the coal plow. Excessive pressure will cause the resistance of the coal conveying belt to increase, increase the load of the coal conveying reducer, and sometimes prevent the operation of the coal conveying belt, causing serious belt wear and shortening the service life of the belt. Too little pressure will cause a gap between the coal plow and the coal conveying belt, resulting in unclean coal scraping, and the coal surface will flow into the coal bunker of the last boiler, affecting the combustion of the last boiler. The pressure of the existing coal plow is completely adjusted by the manual experience of the coal loading personnel, which has great defects. Due to the structural design of the existing coal plow, the coal plow support frame moves in an arc around the axis, resulting in serious wear on the contact surface between the front end of the coal plow rubber plate and the coal conveying belt, and the rear end of the coal plow rubber plate is insufficient and slightly worn, so it is necessary to adjust regularly and cut the contact surface between the coal plow rubber plate and the coal conveying belt. This is another major defect of the existing coal distribution system.

[0005] In view of the above problems, the present invention designs a new, fully automatic continuous coal distribution device, which can well solve the existing problems. Summary of the invention

[0006] In order to overcome the problems of low boiler combustion efficiency, large energy waste, high harmful gas emission, etc. caused by the existing fixed coal distribution method, the present invention provides a fully automatic continuous coal distribution device, through which the coal distribution structure is reasonably optimized to ensure the coal distribution efficiency.

[0007] The technical solution adopted by the present invention is a fully automatic continuous coal distribution device, which includes a driving pulley 1, a driven pulley 2, a belt 3, a reducer 4, a coal conveyor belt 5, a chain 6, a coal bin 7, a coal discharge funnel 8, a driven sprocket 9, a coal plow lifting platform 10, a coal plow 11, a coal plow trolley 12, and a coal discharge channel 13. The output shaft of the reducer 4 is coaxially connected to the driving pulley 1; the driving pulley 1 is connected to the driven pulley 2 by a belt 3; the coal conveyor belt 5 is installed in the middle of the top of the coal bunker 7, the driven pulley 2 is coaxial with the driving sprocket, the driven sprocket 9 and the driving sprocket are symmetrically arranged at both ends of the coal conveyor belt 5, and the driving sprocket and the driven sprocket 9 are connected by a chain 6; a coal plow trolley 12 is fixedly installed on the chain 6, a coal plow lifting platform 10 is installed on the coal plow trolley 12, a coal plow 11 is installed at the bottom of the coal plow lifting platform 10, and a coal plow lifting shaft 14 is driven and adjusted by a lifting motor, and the coal plow lifting shaft 14 is connected to the coal plow 11; a coal lowering channel 13 is opened on both sides of the coal bunker 7; the coal plow 11 is directly opposite to the surface of the coal conveyor belt 5, and can plow the lump coal on the coal conveyor belt 5, and evenly distribute it layer by layer into the coal bunker 7 through the coal lowering funnel 8 and the coal lowering channel 13.

[0008] Furthermore, the driving pulley 1, the driven pulley 2 and the belt 3 constitute a power transmission structure for realizing power transmission; the driving sprocket, the driven sprocket 9 and the chain 6 constitute a mechanism for reciprocating motion along the coal conveyor belt 5.

[0009] Furthermore, travel trigger switches are installed at positions on both sides of the coal bunker 7 corresponding to the chains 6 , and the travel trigger switches are connected to the reducer 4 .

[0010] Furthermore, the coal plow trolley 12 is formed by welding channel steel.

[0011] Furthermore, the coal hopper 8 is bolted and fixed on the coal plow trolley 12, the coal plow lifting platform 10 is bolted to two load-bearing channel steels of the coal plow trolley 12, and the coal plow 11 is connected to the end flange of the screw of the lifting platform 10.

[0012] Furthermore, the cross-section of the upper half of the coal hopper 8 is an inverted trapezoid, and the cross-section of the lower half is a rectangle. The overall structure is a hollow structure with a larger upper portion and equal diameters in the middle and lower portions. This hollow structure saves space on both sides of the coal conveyor belt 5.

[0013] Furthermore, the coal plow lifting platform 10 includes a platform reduction motor, a lead screw, a pressure stabilizing spring 15, a coal plow lifting shaft 14, a coal conveyor belt vertical limit wheel 16 and a coal conveyor belt horizontal limit wheel 17; the platform reduction motor is connected to the lead screw, the lead screw is arranged vertically, the lead screw is connected to the middle of the coal plow 11, and the coal plow lifting shaft 14 is connected to the side of the coal plow 11. The coal conveyor belt vertical limit wheel 16 contacts both sides of the coal conveyor belt 5, and the coal conveyor belt horizontal limit wheel 17 contacts the bottom of the coal conveyor belt 5. A pressure stabilizing spring 15 is provided between the coal plow 11 and the coal plow lifting platform 10, and the pressure stabilizing spring 15 ensures that the coal plow 11 has a certain balance ability, ensures that the pressure between the coal plow 11 and the coal conveyor belt 5 is stable, and prevents the coal plow 11 from getting stuck.

[0014] Furthermore, the coal plow 11 includes a plowshare, a plowshare bracket and a metal strip. The plowshare has a triangular cross section, and the plowshare is mounted on the plowshare bracket through the metal strip. The plowshare bracket is connected to the coal plow lifting shaft 14 and the lead screw of the coal plow lifting platform 10.

[0015] Further, the plowshare is made of a polymer wear-resistant material.

[0016] During operation, the driving pulley 1, the driven pulley 2 and the belt 3 are driven by the reducer 4 to move, and then the reciprocating mechanism composed of the driving sprocket, the driven sprocket 9 and the chain 6 is driven to reciprocate along the coal conveyor belt 5 at the top of the coal bunker 7 (the movement speed of the reciprocating mechanism is much lower than the movement speed of the coal conveyor belt 5), thereby driving the coal plow trolley 12 fixed on the chain 6 to reciprocate, and the coal plow 11 reciprocates along the coal conveyor belt 5 to complete the uniform screening of the lump coal on the coal conveyor belt 5. In addition, the coal plow lifting platform 10 is appropriately adjusted according to the coal seam height of the lump coal on the coal conveyor belt 5, so that the coal plow 11 is at a suitable height.

[0017] The forward and reverse rotation of the reducer 4 and the lifting platform 10 motor are controlled by PLC, and the corresponding travel switch completes the reciprocating motion of the coal plow 11 along the coal conveyor belt 5 through PLC, and the entire operation process is uninterrupted and continuous.

[0018] The traditional coal distribution system is a fixed, stationary coal plow, which cannot achieve uniform distribution of coal and requires manual control. When the coal distribution is very uneven, it is necessary to constantly stop the operation and make adjustments. The system of the present invention can realize the continuous dynamic reciprocating motion of the coal plow, achieve uniform distribution of coal, and does not need to stop for adjustment. It realizes automatic control through PLC, so it can realize automatic and continuous coal distribution.

[0019] The device replaces the original fixed coal plow with a movable coal plow, and transforms the original fixed coal discharge port into two parallel coal discharge channels with the same length as the total width of the coal bunker; and further enables the coal plow to achieve reciprocating movement, forming a relative movement with the coal conveyor belt, ultimately ensuring that the coal on the coal conveyor belt is evenly distributed in the coal bunker, solving the problem of separation of coal blocks and coal surface.

[0020] The whole system realizes the lifting and reciprocating motion of the lead screw of the coal plow through the PLC control motor. The lifting platform of the coal plow realizes the automatic lifting of the coal plow through the lifting platform motor. A pressure stabilizing spring is installed at the lower end of the lifting platform to realize the automatic pressure stabilization between the coal plow and the coal conveyor belt, so that there will be no excessive or insufficient pressure, thereby extending the service life of the coal conveyor belt. The whole device can improve the combustion efficiency of the boiler, realize uniform mixing of coal, solve the problem of insufficient coal combustion, reduce the oxygen content of the boiler, thereby reducing the emission of nitrogen oxides and sulfides, and achieve the purpose of energy saving and emission reduction.

[0021] Compared with the prior art, the present invention has the following beneficial effects.

[0022] 1. The existing coal bunker adopts fixed coal discharging. Generally, there are two sets of corresponding coal openings on the coal bunker. This coal discharging method will cause the lump coal and surface coal to separate under the action of gravity and conical coal pile. There are fewer gaps in the surface coal, which will lead to incomplete combustion and energy waste. The continuous coal distribution device is adopted, and the original fixed coal discharging opening is converted into two parallel coal discharging channels with the same length as the total width of the coal bunker. The reciprocating movement of the coal plow can be realized, and the coal on the coal conveyor belt can be evenly arranged in the coal bunker. In this way, the lump coal and surface coal are evenly distributed, the combustion will be more complete, and energy conservation and utilization can be achieved.

[0023] 2. The existing coal plow adjusts the pressure by adjusting the lifting and contraction distance of the coal plow screw. In this way, it is difficult to control the pressure of the coal plow. If the pressure is too much, the resistance of the coal conveyor belt will increase, the load of the coal conveyor reducer will increase, and sometimes the operation of the coal conveyor belt will be blocked, causing serious belt wear and shortening the belt service life. If the pressure is too little, there will be a gap between the coal plow and the coal conveyor belt, resulting in unclean coal scraping, and the coal surface will flow into the coal bunker of the last boiler, affecting the combustion efficiency of the last boiler. The pressure of the coal plow is completed by the experience of the coal loading personnel, and the accuracy is not high. In addition, the existing coal plow support frame makes an arc motion around the axis, resulting in serious wear of the contact surface between the front end of the coal plow rubber plate and the coal conveyor belt, and the rear end of the coal plow rubber plate has insufficient pressure and slight wear, so it is necessary to regularly adjust and cut the contact surface between the coal plow rubber plate and the coal conveyor belt. To this end, the present invention uses a motor and a sensor to realize automatic control of the lifting platform, and a pressure-stabilizing spring is installed at the lower end of the lifting platform, so as to realize automatic adjustment of the pressure between the automatic pressure-stabilizing coal plow and the coal conveyor belt, avoid excessive or insufficient pressure, ensure the safe and stable operation of the coal plow, reduce various hidden dangers that affect the safe operation of the equipment, and further extend the service life of the coal conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The front view of the overall device of the present invention;

[0025] Figure 2 A top view of the present invention Figure 1 ;

[0026] Figure 3 A top view of the present invention Figure 2 ;

[0027] Figure 4 A side view of the present invention;

[0028] Figure 5 Coal bunker layout plan of the present invention;

[0029] Figure 6 Figure 1. Coal plow lifting platform of the present invention. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figure 1-6 As shown, the technical solution adopted by the present invention is a fully automatic continuous coal distribution device, which includes a driving pulley 1, a driven pulley 2, a belt 3, a reducer 4, a coal conveyor belt 5, a chain 6, a coal bin 7, a coal discharge hopper 8, a driven sprocket 9, a coal plow lifting platform 10, a coal plow 11, a coal plow trolley 12, and a coal discharge channel 13. The output shaft of the reducer 4 is coaxially connected to the driving pulley 1; the driving pulley 1 is connected to the driven pulley 2 by a belt 3; the coal conveyor belt 5 is installed at the top middle position of the coal bunker 7, the driven pulley 2 is coaxial with the driving sprocket (not shown in the figure), the driven sprocket 9 and the driving sprocket are symmetrically arranged at both ends of the coal conveyor belt 5, and the driving sprocket and the driven sprocket 9 are connected by a chain 6; a coal plowing trolley 12 is fixedly installed on the chain 6, and a coal plowing device lifting platform 10 is installed on the coal plowing trolley 12, and a coal plowing device 11 is installed at the bottom of the coal plowing device lifting platform 10, and the coal plowing device lifting shaft 14 is driven and adjusted by the lifting motor, and the coal plowing device lifting shaft 14 is connected to the coal plowing device 11; the coal discharging channel 13 is opened on both sides of the coal bunker 7; the coal plowing device 11 is directly opposite to the surface of the coal conveyor belt 5, and can plow the lump coal on the coal conveyor belt 5, and evenly distribute it into the coal bunker 7 layer by layer through the coal discharging funnel 8 and the coal discharging channel 13.

[0032] Furthermore, the driving pulley 1, the driven pulley 2 and the belt 3 constitute a power transmission structure for realizing power transmission; the driving sprocket, the driven sprocket 9 and the chain 6 constitute a mechanism for reciprocating motion along the coal conveyor belt 5.

[0033] Furthermore, travel trigger switches are installed at positions corresponding to the chains 6 on both sides of the coal bunker 7, and the travel trigger switches are connected to the reducer 4 to control the forward and reverse rotation of the reducer 4 and the reciprocating motion of the reciprocating motion mechanism.

[0034] Furthermore, the coal plow trolley 12 is formed by welding channel steel.

[0035] The lower coal hopper 8 is bolted and fixed on the coal plow trolley 12, the coal plow lifting platform 10 is bolted to two load-bearing channel steels of the coal plow trolley 12, and the coal plow 11 is connected to the flange at the end of the lead screw of the lifting platform 10.

[0036] The cross section of the upper part of the coal lowering funnel 8 is an inverted trapezoid, and the cross section of the lower part is a rectangle. The whole structure is a hollow structure with a large upper part, a middle part and a lower part of equal diameter. This structure saves space on both sides of the coal conveyor belt 5.

[0037] The coal plow lifting platform 10 includes a platform reduction motor, a lead screw, a pressure stabilizing spring 15, a coal plow lifting shaft 14, a coal conveyor belt vertical limit wheel 16 and a coal conveyor belt horizontal limit wheel 17; the platform reduction motor is connected to the lead screw, the lead screw is arranged vertically, the lead screw is connected to the middle of the coal plow 11, and the coal plow lifting shaft 14 is connected to the side of the coal plow 11. The coal conveyor belt vertical limit wheel 16 contacts both sides of the coal conveyor belt 5, and the coal conveyor belt horizontal limit wheel 17 contacts the bottom of the coal conveyor belt 5. A pressure stabilizing spring 15 is provided between the coal plow 11 and the coal plow lifting platform 10. The function of the pressure stabilizing spring 15 is to ensure that the coal plow 11 has a certain balance ability, to ensure the pressure between the coal plow 11 and the coal conveyor belt 5 is stable, and to prevent the coal plow 11 from getting stuck.

[0038] The coal plow 11 comprises a plowshare, a plowshare bracket and a metal pressure strip. The plowshare has a triangular cross section, and the plowshare is mounted on the plowshare bracket through the metal pressure strip. The plowshare bracket is connected to the coal plow lifting shaft 14 and the lead screw of the coal plow lifting platform 10.

[0039] The plowshare is made of polymer wear-resistant material.

[0040] During operation, the driving pulley 1, the driven pulley 2 and the belt 3 are driven by the reducer 4 to move, and then the reciprocating mechanism composed of the driving sprocket, the driven sprocket 9 and the chain 6 is driven to reciprocate along the coal conveyor belt 5 at the top of the coal bunker 7 (the movement speed of the reciprocating mechanism is much lower than the movement speed of the coal conveyor belt 5), thereby driving the coal plow trolley 12 fixed on the chain 6 to reciprocate, and the coal plow 11 reciprocates along the coal conveyor belt 5 to complete the uniform screening of the lump coal on the coal conveyor belt 5. In addition, the coal plow lifting platform 10 is appropriately adjusted according to the coal seam height of the lump coal on the coal conveyor belt 5, so that the coal plow 11 is at a suitable height.

[0041] The coal distribution system controls the forward and reverse rotation of the reducer 4 and the lifting platform 10 motor through PLC, and the corresponding stroke sensor completes the reciprocating motion of the coal plow 11 along the coal conveyor belt 5 according to a certain program, and the entire operation process is uninterrupted and continuous.

[0042] The traditional coal distribution system is a fixed, stationary coal plow, which cannot achieve uniform distribution of coal and requires manual control. When the coal distribution is very uneven, it is necessary to constantly stop the operation and make adjustments. The system of the present invention can realize the continuous dynamic reciprocating motion of the coal plow, achieve uniform distribution of coal, and does not need to stop for adjustment. It realizes automatic control through PLC, so it can realize automatic and continuous coal distribution.

[0043] In the traditional fixed coal plow, the specific working principle is to connect the small block at the upper front end of the coal plow through a screw, and the lower end is connected to the shaft of the coal conveyor belt support, and the screw is connected to the coal plow lifting handle. At this time, the coal plow, the coal conveyor belt support and the screw form a triangle. When working, the screw stroke is adjusted by manually turning the coal plow lifting handle to realize manual coal plow lifting adjustment.

[0044] The fully automatic continuous coal distribution device proposed in the present invention is divided into two parts: a mechanical device and an electrical control part. The electrical control part is mainly composed of three modules: a programmable logic controller PLC, a frequency converter and a motor. The coal conveyor belt running motor directly uses the output of the PLC to realize operation. When the lifting motor of the coal plow is limited by the upper end station limit sensor and the lower end station limit sensor, the motor is reversed by interlocking. Since the running motor of the coal plow needs the function of speed regulation to maximize efficiency, this design adopts a frequency converter to realize it. First, the given input is set to the PLC, and then the frequency converter is controlled by the PLC. The motor is controlled by the frequency converter, and then the motor speed is fed back to the PLC, and after comparison, it is output to the frequency converter to realize zero-static speed regulation.

[0045] The specific working process of the present invention is as follows: when the coal on the coal conveyor belt 5 enters the top of the coal bunker, the coal plow 11 starts to descend under the operation of the coal plow lifting motor 12, and a pressure stabilizing spring 15 is installed at the lower end of the coal plow lifting platform 10 to realize automatic pressure stabilization between the coal plow 11 and the coal conveyor belt 5 to prevent the situation of excessive pressure or insufficient pressure, until the coal plow 11 is in close contact with the coal conveyor belt 5, and then starts to move in the opposite direction with the coal conveyor belt 5 at a uniform speed. The current adjustment speed is 0.08m / s (which can be adjusted according to the actual pressure). The speed of the coal conveyor belt 5 is usually set to 1m / s, which pushes the coal into the coal hopper 8, and then the coal falls evenly into the coal bunker from the coal hopper 8 along with the uniform movement of the coal plow 11; when the coal plow 11 moves to the other end of the coal bunker and touches the travel switch, it realizes the reverse movement to the ground and starts to move in the same direction as the coal conveyor belt 5. Since the movement speed of the coal plow 11 is much lower than the movement speed of the belt, the coal can still be pushed, and this cycle is repeated to realize that the coal in the coal hopper 8 falls evenly into the coal bunker 7 during movement.

Claims

1. A fully automatic continuous coal distribution device, characterized in that: The invention comprises a driving pulley (1), a driven pulley (2), a belt (3), a speed reducer (4), a coal conveyor belt (5), a chain (6), a coal bunker (7), a coal discharging hopper (8), a driven sprocket (9), a coal plow lifting platform (10), a coal plow (11), a coal plow trolley (12), and a coal discharging channel (13); the output shaft of the speed reducer (4) is coaxially connected to the driving pulley (1); the driving pulley (1) and the driven pulley (2) are connected via a belt (3); the coal conveyor belt (5) is installed at the top middle position of the coal bunker (7); the driven pulley (11) is connected to the driven pulley (2) ... connected to the driven pulley (2) via a belt (3); the coal The pulley (2) is coaxial with the driving sprocket, the driven sprocket (9) and the driving sprocket are symmetrically arranged at both ends of the coal conveyor belt (5), and the driving sprocket and the driven sprocket (9) are connected by a chain (6); a coal plowing trolley (12) is fixedly mounted on the chain (6), a coal plowing device lifting platform (10) is mounted on the coal plowing trolley (12), a coal plowing device (11) is mounted at the bottom of the coal plowing device lifting platform (10), a coal plowing device lifting shaft (14) is driven and adjusted by a lifting motor, and the coal plowing device lifting shaft (14) is connected to the coal plowing device (11); a coal lowering channel (13) is provided. ) are provided on both sides of the coal bunker (7); the coal plow (11) is directly opposite to the surface of the coal conveyor belt (5), and can plow down the lump coal on the coal conveyor belt (5), and evenly distribute the lump coal layer by layer into the coal bunker (7) through the coal discharge funnel (8) and the coal discharge channel (13); the coal plow lifting platform (10) includes a platform reduction motor, a lead screw, a pressure stabilizing spring (15), a coal plow lifting shaft (14), a coal conveyor belt vertical limit wheel (16) and a coal conveyor belt horizontal limit wheel (17); the platform reduction motor is connected to the lead screw, the lead screw is arranged vertically, and the lead screw is connected to the coal plow (11 ), the coal plow lifting shaft (14) is connected to the side of the coal plow (11); the coal conveyor belt vertical limit wheels (16) are in contact with both sides of the coal conveyor belt (5), and the coal conveyor belt horizontal limit wheels (17) are in contact with the bottom of the coal conveyor belt (5); a pressure stabilizing spring (15) is provided between the coal plow (11) and the coal plow lifting platform (10), and the pressure stabilizing spring (15) ensures that the coal plow (11) has a certain balance ability, ensures that the pressure between the coal plow (11) and the coal conveyor belt (5) is stable, and prevents the coal plow (11) from getting stuck; The driving pulley (1), the driven pulley (2) and the belt (3) form a power transmission structure for realizing power transmission; the driving sprocket, the driven sprocket (9) and the chain (6) form a mechanism for reciprocating along the coal conveyor belt (5); Travel trigger switches are installed at positions corresponding to the chains (6) on both sides of the coal bunker (7), and the travel trigger switches are connected to the reducer (4).

2. A fully automatic continuous coal distribution device according to claim 1, characterized in that: The coal plow trolley (12) is formed by welding channel steel.

3. The fully automatic continuous coal distribution device according to claim 1, characterized in that: The coal lowering funnel (8) is bolted and fixed on the coal plowing trolley (12), the coal plowing device lifting platform (10) is bolted to two load-bearing channel steels of the coal plowing trolley (12), and the coal plowing device (11) is connected to the end flange of the lead screw of the coal plowing device lifting platform (10).

4. A fully automatic continuous coal distribution device according to claim 1 or 3, characterized in that: The cross section of the upper part of the coal lowering funnel (8) is an inverted trapezoid, and the cross section of the lower part is a rectangle. The overall structure is a hollow structure with a large upper part and equal diameters in the middle and lower parts. This hollow structure saves space on both sides of the coal conveyor belt (5).

5. The fully automatic continuous coal distribution device according to claim 1, characterized in that: The coal plow (11) comprises a plowshare, a plowshare bracket and a metal pressure strip; the plowshare has a triangular cross section, the plowshare is mounted on the plowshare bracket via the metal pressure strip, and the plowshare bracket is connected to a coal plowshare lifting shaft (14) and a lead screw of the coal plowshare lifting platform (10).

6. The fully automatic continuous coal distribution device according to claim 1, characterized in that: The plowshare is made of polymer wear-resistant material.

7. The fully automatic continuous coal distribution device according to claim 1, characterized in that: During operation, the reducer (4) drives the driving pulley (1), the driven pulley (2) and the belt (3) to move, and then drives the reciprocating mechanism composed of the driving sprocket, the driven sprocket (9) and the chain (6) to reciprocate along the coal conveyor belt (5) at the top of the coal bunker (7). The movement speed of the reciprocating mechanism is much lower than the movement speed of the coal conveyor belt (5), thereby driving the coal plowing trolley (12) fixed on the chain (6) to reciprocate, and the coal plowing device (11) reciprocates along the coal conveyor belt (5), thereby completing the uniform screening of the lump coal on the coal conveyor belt (5); the coal plowing device lifting platform (10) is appropriately adjusted according to the coal seam height of the lump coal on the coal conveyor belt (5), so that the coal plowing device (11) is at a suitable height; The forward and reverse rotation of the reducer (4) and the motor of the coal plow lifting platform (10) are controlled by the PLC, and the corresponding stroke trigger switch completes the reciprocating motion of the coal plow (11) along the coal conveyor belt (5) through the PLC, and the entire operation process is uninterrupted and continuous.

Images