CN112178677A - A fully automatic continuous coal distribution device - Google Patents
A fully automatic continuous coal distribution device Download PDFInfo
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- CN112178677A CN112178677A CN202010948852.9A CN202010948852A CN112178677A CN 112178677 A CN112178677 A CN 112178677A CN 202010948852 A CN202010948852 A CN 202010948852A CN 112178677 A CN112178677 A CN 112178677A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/22—Controlling thickness of fuel bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/004—Feeding devices with reciprocating members
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Abstract
本发明公开了一种全自动连续式布煤装置，包括主动带轮、从动带轮、皮带、减速机、输煤传送带、链条、煤仓、下煤漏斗、从动链轮、犁煤器升降平台、犁煤器、犁煤小车、下煤通道。该装置将原有固定式的犁煤器更换为可移动式犁煤器，并将原有的固定式下煤口改造为和煤仓总宽度一样长的并行两条下煤通道；而且进一步使犁煤器实现往复移动，形成与输煤皮带的相对运动，最终保证将输煤皮带的煤均匀布置到煤仓内，解决煤块和煤面分离的问题。整个系统通过PLC控制电机实现犁煤器的丝杠升降和正反往复运动。整个装置可提高锅炉燃烧效率，实现燃煤均匀混合，解决煤燃烧不充分问题；降低锅炉氧含量，从而减少氮氧化物，硫化物的排放，达到了节能减排的目的。
The invention discloses a fully automatic continuous coal distribution device, comprising a driving pulley, a driven pulley, a belt, a reducer, a coal conveying conveyor belt, a chain, a coal bunker, a coal loading funnel, a driven sprocket, and a coal plow. Lifting platform, coal plow, coal plow trolley, coal lowering channel. The device replaces the original fixed coal plough with a movable coal plough, and transforms the original fixed coal lower port into two parallel coal lower passages with the same length as the total width of the coal bunker; The coal plow realizes reciprocating movement, forming relative motion with the coal conveying belt, and finally ensures that the coal of the coal conveying belt is evenly arranged in the coal bunker, and solves the problem of separation of coal lumps and coal surface. The whole system controls the motor through PLC to realize the lifting and lowering of the lead screw and the reciprocating motion of the coal plow. The whole device can improve the combustion efficiency of the boiler, realize the uniform mixing of coal combustion, and 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
The invention relates to an automatic coal distribution device for coal mine coal conveying, heat supply boiler coal conveying, power plant coal conveying and the like, in particular to a full-automatic continuous coal distribution device applied to a boiler.
Background
With the development of national economy of China, the boiler manufacturing industry makes great progress, the standard of the boiler industry is increasingly standardized, the technical level is gradually improved, the industrial scale is remarkably enlarged, and the product varieties are continuously increased. However, in the development process of the industry, resource waste and environmental destruction phenomena are serious. Compared with developed countries, the coal-fired boiler in China has lower combustion efficiency and large energy consumption. Therefore, the method has important significance for promoting the economic development of China by improving the combustion efficiency of the coal-fired boiler. Energy is an important material basis for supporting and promoting the development of national economy in China, and for a long time, coal-fired boilers face the problems of low combustion efficiency and serious energy consumption, so that the improvement of the combustion efficiency of the existing equipment becomes a technical problem to be solved urgently.
The coal distribution mode has great influence on the combustion efficiency of the boiler, the traditional coal distribution mode, namely a coal bunker adopts a fixed type to discharge coal, two groups of corresponding coal ports are arranged on the common coal bunker, and the coal discharge mode can cause separation of lump coal and surface coal under the action of gravity and a conical coal pile, so that the following three serious problems are caused, and urgent need to be solved: 1. the combustion efficiency is low, which is mainly characterized in that coal blocks and coal surfaces are not uniformly distributed, wind cannot blow through, the coal surface ignition efficiency is low, the combustion is not uniform, and the effect is poor; 2. the coal is not fully combusted, and because a large amount of coal surface is accumulated, the fire cannot be started, the carbon content of fly ash and large slag is increased, and the coal resource waste is caused; 3. insufficient combustion can result in excessive oxygen content in the boiler, which can result in the production of large amounts of Nitrogen Oxides (NO)x) Sulfide (SO)x) And when the air pollutants are removed, the production cost is greatly increased, the cost and the resource waste are indirectly caused, and the dust content is also increased to cause secondary environmental pollution.
At present, the fixed coal plough is arranged to current fixed mode of launching coal, and the pressure of coal plough is realized through the lift-shrink of manual adjustment coal plough lead screw. Therefore, the proper pressure of the coal plough is difficult to grasp, the resistance of the coal conveying belt is increased due to the overlarge pressure, the load of the coal conveying speed reducer is increased, the running of the coal conveying belt is also prevented sometimes, and the service life of the belt is shortened seriously due to the belt abrasion. Too little pressure can lead to coal plough and coal conveying belt to have the clearance and lead to scraping the coal unclean, and the coal face has flowed in the coal bunker of last boiler, influences the burning of last boiler. The pressure of the existing coal plough is completely adjusted by the manual experience of the coal supply personnel, and the mode has great defects. Due to the structural design of the existing coal plough, the coal plough supporting frame does circular motion around the shaft, so that the contact surface between the front end of the coal plough rubber plate and the coal conveying belt is seriously abraded, the insufficient pressure at the rear end of the coal plough rubber plate is slightly abraded, and the coal plough rubber plate needs to be adjusted regularly and the contact surface between the coal plough rubber plate and the coal conveying belt needs to be cut. This is another big defect of current coal distribution system.
Aiming at the problems, the invention designs a brand-new full-automatic continuous coal distribution device, which can well solve the existing problems.
Disclosure of Invention
In order to solve the problems of low combustion efficiency, large energy waste, high harmful gas discharge capacity and the like of a boiler caused by the conventional fixed coal distribution mode, the invention provides a full-automatic continuous coal distribution device, which is used for reasonably optimizing a coal distribution structure and ensuring the coal distribution efficiency.
The invention adopts the technical scheme that the full-automatic continuous coal distribution device comprises a driving belt wheel 1, a driven belt wheel 2, a belt 3, a speed reducer 4, a coal conveying belt 5, a chain 6, a coal bin 7, a coal discharging hopper 8, a driven chain wheel 9, a coal plough lifting platform 10, a coal plough 11, a coal plough trolley 12 and a coal discharging channel 13. An output shaft of the speed reducer 4 is coaxially connected with the driving belt wheel 1; the driving belt wheel 1 is connected with the driven belt wheel 2 through a belt 3; the coal conveying belt 5 is arranged in the middle of the top of the coal bunker 7, the driven belt wheel 2 is coaxial with the driving chain wheel, the driven chain wheel 9 and the driving chain wheel are symmetrically arranged at two ends of the coal conveying belt 5, and the driving chain wheel and the driven chain wheel 9 are connected through a chain 6; a coal plough trolley 12 is fixedly arranged on the chain 6, a coal plough lifting platform 10 is arranged on the coal plough trolley 12, a coal plough 11 is arranged at the bottom of the coal plough lifting platform 10, a coal plough lifting shaft 14 is driven and adjusted by a lifting motor, and the coal plough lifting shaft 14 is connected with the coal plough 11; the coal feeding channel 13 is arranged at two sides of the coal bunker 7; the coal plough 11 is opposite to the surface of the coal conveying belt 5, can plough the coal blocks on the coal conveying belt 5, and is uniformly distributed into the coal bin 7 layer by layer through the coal feeding funnel 8 and the coal feeding channel 13.
Further, the driving belt wheel 1, the driven belt wheel 2 and the belt 3 form a set of power transmission structure for realizing power transmission; the driving sprocket, the driven sprocket 9 and the chain 6 form a set of reciprocating mechanism along the coal conveying belt 5.
Furthermore, travel trigger switches are installed at positions, corresponding to the chains 6, on two sides of the coal bunker 7, and the travel trigger switches are connected with the speed reducer 4.
Further, the coal plough trolley 12 is formed by welding channel steel.
Furthermore, the coal feeding funnel 8 is fixed on the coal plough trolley 12 through bolt connection, the coal plough lifting platform 10 is connected on two bearing channel steel of the coal plough trolley 12 through bolts, and the coal plough 11 is connected on a flange at the tail end of a lead screw of the lifting platform 10.
Further, the upper half section of the coal feeding funnel 8 is inverted trapezoid, the lower half section is rectangular, the whole body is of a hollow structure with large upper part and equal calibers in the middle and lower parts, and the space on two sides of the coal conveying belt 5 is saved by the hollow structure.
Further, the coal plough lifting platform 10 comprises a platform speed reduction motor, a screw rod, a pressure stabilizing spring 15, a coal plough lifting shaft 14, a coal conveying belt vertical limiting wheel 16 and a coal conveying belt horizontal limiting wheel 17; the platform speed reducing motor is connected with a lead screw, the lead screw is vertically arranged, the lead screw is connected with the middle of the coal plough 11, and the coal plough lifting shaft 14 is connected with the side part of the coal plough 11. The vertical coal conveying belt limiting wheel 16 is in contact with two sides of the coal conveying belt 5, and the horizontal coal conveying belt limiting wheel 17 is in contact with the bottom of the coal conveying belt 5. A pressure stabilizing spring 15 is arranged between the coal plough 11 and the coal plough lifting platform 10, the pressure stabilizing spring 15 ensures that the coal plough 11 has certain balance capacity, ensures the pressure between the coal plough 11 and the coal conveying belt 5 to be stable, and prevents the coal plough 11 from being blocked.
Further, the coal plough 11 comprises a plough head, a plough head bracket and a metal pressing strip. The cross section of the plowshare is triangular, the plowshare is arranged on a plowshare bracket through a metal pressing strip, and the plowshare bracket is connected with a coal plough lifting shaft 14 and a lead screw of the coal plough lifting platform 10.
Further, the plowshare is made of a polymer wear-resistant material.
During operation, the driving belt wheel 1, the driven belt wheel 2 and the belt 3 are driven to move through the speed reducer 4, and then the reciprocating mechanism consisting of the driving chain wheel, the driven chain wheel 9 and the chain 6 is driven to reciprocate along the coal conveying belt 5 at the top of the coal bunker 7 (the movement speed of the reciprocating mechanism is far smaller than that of the coal conveying belt 5), so that the coal plough trolley 12 fixed on the chain 6 is driven to reciprocate, and the coal plough trolley 11 reciprocates along the coal conveying belt 5 to complete uniform coal screening and discharging of lump coal on the coal conveying belt 5. In addition, the coal plough lifting platform 10 is properly adjusted according to the coal seam height of lump coal on the coal conveying belt 5, so that the coal plough 11 is at a proper height.
The speed reducer 4 and the lifting platform 10 are controlled by the PLC to rotate positively and negatively, and the corresponding travel switches complete the reciprocating motion of the coal plough 11 along the coal conveying belt 5 through the PLC, and the whole operation process is continuous operation without interruption.
The traditional coal distribution system is a fixed and stationary coal plough, cannot realize uniform distribution of coal, needs manual control, and needs to continuously stop operation for adjustment when the coal distribution is very uneven; the system can realize continuous and dynamic reciprocating motion of the coal plough, uniform coal distribution is realized, adjustment does not need to be stopped, and automatic control is realized through a PLC (programmable logic controller), so that automatic and continuous coal distribution can be realized.
The device changes the original fixed coal plough into a movable coal plough, and transforms the original fixed coal discharge port into two parallel coal discharge channels with the same length as the total width of a coal bunker; and further, the coal plough realizes reciprocating movement to form relative movement with the coal conveying belt, finally, the coal of the coal conveying belt is uniformly distributed in the coal bunker, and the problem of separation of coal blocks and coal surfaces is solved.
The whole system realizes the lifting and the positive and negative reciprocating motion of a lead screw of the coal plough through a PLC control motor. The lifting platform of the coal plough realizes the automatic lifting of the coal plough through the motor of the lifting platform, and the pressure stabilizing spring is arranged at the lower end of the lifting platform, so that the pressure between the coal plough and the coal conveying belt is automatically stabilized, and the condition of overlarge pressure or undersize pressure cannot occur, thereby prolonging the service life of the coal conveying belt. The whole device can improve the combustion efficiency of the boiler, realize the uniform mixing of the coal and solve the problem of insufficient combustion of the coal; the oxygen content of the boiler is reduced, thereby reducing the emission of nitrogen oxides and sulfides and achieving the aims of energy conservation and emission reduction.
Compared with the prior art, the invention has the following beneficial effects.
1. The existing coal bunker adopts fixed coal feeding, two groups of corresponding coal ports are arranged on the common coal bunker, and the coal feeding mode can cause separation of lump coal and surface coal under the action of gravity and a conical coal pile. The gaps in the surface coal are less, so that insufficient combustion can be caused, and energy waste is caused. The continuous coal distributing device is adopted, and the original fixed coal feeding port is changed into two parallel coal feeding channels which are as long as the total width of the coal bunker, so that the coal plough can move back and forth, and the coal of the coal conveying belt is uniformly distributed in the coal bunker. Therefore, the lump coal and the surface coal are uniformly distributed, the combustion is more sufficient, and the energy is saved and utilized.
2. The existing coal plough adjusts the pressure by adjusting the lifting distance of a screw rod of the coal plough, so that the pressure of the coal plough is difficult to control, the resistance of a coal conveying belt is increased when the pressure is too much, the load of a coal conveying speed reducer is increased, the running of the coal conveying belt is stopped sometimes, the belt is abraded, and the service life of the belt is shortened seriously. The pressure gives and lacks the clearance that coal plough and coal conveying belt exist and leads to scraping the coal unclean, and the coal face has flowed in the coal bunker of last boiler, influences the combustion efficiency of last boiler, and the pressure of coal plough is accomplished by the experience of the personnel of getting into the coal, and the precision is not high. And the prior coal plough supporting frame does circular motion around the shaft, which causes serious abrasion of the contact surface of the front end of the coal plough rubber plate and the coal conveying belt and slight insufficient abrasion of the rear end of the coal plough rubber plate, thereby needing to regularly adjust and cut the contact surface of the coal plough rubber plate and the coal conveying belt. Therefore, the invention realizes the automatic control of the lifting platform by adopting the matching of the motor and the sensor, and the pressure stabilizing spring is arranged at the lower end of the lifting platform, thereby realizing the automatic pressure adjustment between the automatic pressure stabilizing coal plough and the coal conveying belt, avoiding the condition of overlarge or undersize pressure, ensuring the safe and stable operation of the coal plough, reducing various hidden dangers influencing the safe operation of the equipment, and further prolonging the service life of the coal conveying belt.
Drawings
FIG. 1 is a front view of the overall apparatus of the present invention;
FIG. 2 is a top view 1 of the present invention;
FIG. 3 is a top view 2 of the present invention;
FIG. 4 is a side view of the present invention;
FIG. 5 is a plan view of a coal bunker layout of the present invention;
FIG. 6 is a diagram of the coal plough elevation platform of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1-6, the technical scheme adopted by the invention is a full-automatic continuous coal distribution device, which comprises a driving belt wheel 1, a driven belt wheel 2, a belt 3, a speed reducer 4, a coal conveying belt 5, a chain 6, a coal bunker 7, a coal feeding funnel 8, a driven chain wheel 9, a coal plough lifting platform 10, a coal plough 11, a coal plough trolley 12 and a coal feeding channel 13. An output shaft of the speed reducer 4 is coaxially connected with the driving belt wheel 1; the driving belt wheel 1 is connected with the driven belt wheel 2 through a belt 3; the coal conveying belt 5 is arranged in the middle of the top of the coal bunker 7, the driven belt wheel 2 is coaxial with a driving chain wheel (not marked in the figure), the driven chain wheel 9 and the driving chain wheel are symmetrically arranged at two ends of the coal conveying belt 5, and the driving chain wheel and the driven chain wheel 9 are connected through a chain 6; a coal plough trolley 12 is fixedly arranged on the chain 6, a coal plough lifting platform 10 is arranged on the coal plough trolley 12, a coal plough 11 is arranged at the bottom of the coal plough lifting platform 10, a coal plough lifting shaft 14 is driven and adjusted by a lifting motor, and the coal plough lifting shaft 14 is connected with the coal plough 11; the coal feeding channel 13 is arranged at two sides of the coal bunker 7; the coal plough 11 is opposite to the surface of the coal conveying belt 5, can plough the coal blocks on the coal conveying belt 5, and is uniformly distributed into the coal bin 7 layer by layer through the coal feeding funnel 8 and the coal feeding channel 13.
Further, the driving belt wheel 1, the driven belt wheel 2 and the belt 3 form a set of power transmission structure for realizing power transmission; the driving sprocket, the driven sprocket 9 and the chain 6 form a set of reciprocating mechanism along the coal conveying belt 5.
Furthermore, travel trigger switches are installed at positions, corresponding to the chains 6, on two sides of the coal bunker 7, and are connected with the speed reducer 4 to control forward and reverse rotation of the speed reducer 4 and reciprocating motion of the reciprocating mechanism.
Further, the coal plough trolley 12 is formed by welding channel steel.
The coal feeding funnel 8 is fixed on the coal plough trolley 12 through bolt connection, the coal plough lifting platform 10 is connected on two bearing channel steel of the coal plough trolley 12 through bolts, and the coal plough 11 is connected on a flange at the tail end of a screw rod of the lifting platform 10.
The upper half section of the coal feeding funnel 8 is inverted trapezoid, the lower half section is rectangular, the whole structure is a hollow structure with equal calibers of the upper large middle part and the lower part, and the two side spaces of the coal conveying belt 5 are saved by the structure.
The coal plough lifting platform 10 comprises a platform speed reducing motor, a screw rod, a pressure stabilizing spring 15, a coal plough lifting shaft 14, a coal conveying belt vertical limiting wheel 16 and a coal conveying belt horizontal limiting wheel 17; the platform speed reducing motor is connected with a lead screw, the lead screw is vertically arranged, the lead screw is connected with the middle of the coal plough 11, and the coal plough lifting shaft 14 is connected with the side part of the coal plough 11. The vertical coal conveying belt limiting wheel 16 is in contact with two sides of the coal conveying belt 5, and the horizontal coal conveying belt limiting wheel 17 is in contact with the bottom of the coal conveying belt 5. A pressure stabilizing spring 15 is arranged between the coal plough 11 and the coal plough lifting platform 10, and the pressure stabilizing spring 15 is used for ensuring that the coal plough 11 has certain balance capacity, ensuring the pressure between the coal plough 11 and the coal conveying belt 5 to be stable and preventing the coal plough 11 from being blocked.
The coal plough 11 comprises a plough head, a plough head bracket and a metal pressing bar. The cross section of the plowshare is triangular, the plowshare is arranged on a plowshare bracket through a metal pressing strip, and the plowshare bracket is connected with a coal plough lifting shaft 14 and a lead screw of the coal plough lifting platform 10.
The plowshare is made of a polymer wear-resistant material.
During operation, the driving belt wheel 1, the driven belt wheel 2 and the belt 3 are driven to move through the speed reducer 4, and then the reciprocating mechanism consisting of the driving chain wheel, the driven chain wheel 9 and the chain 6 is driven to reciprocate along the coal conveying belt 5 at the top of the coal bunker 7 (the movement speed of the reciprocating mechanism is far smaller than that of the coal conveying belt 5), so that the coal plough trolley 12 fixed on the chain 6 is driven to reciprocate, and the coal plough trolley 11 reciprocates along the coal conveying belt 5 to complete uniform coal screening and discharging of lump coal on the coal conveying belt 5. In addition, the coal plough lifting platform 10 is properly adjusted according to the coal seam height of lump coal on the coal conveying belt 5, so that the coal plough 11 is at a proper height.
The coal distribution system controls the positive and negative rotation of the motors of the speed reducer 4 and the lifting platform 10 through the PLC, and the corresponding stroke sensors complete the reciprocating motion of the coal plough 11 along the coal conveying conveyor belt 5 according to a certain program, and the coal distribution system continuously operates in the whole operation process.
The traditional coal distribution system is a fixed and stationary coal plough, cannot realize uniform distribution of coal, needs manual control, and needs to continuously stop operation for adjustment when the coal distribution is very uneven; the system can realize continuous and dynamic reciprocating motion of the coal plough, uniform coal distribution is realized, adjustment does not need to be stopped, and automatic control is realized through a PLC (programmable logic controller), so that automatic and continuous coal distribution can be realized.
In the traditional fixed coal plough, the concrete working principle is that a small block at the front upper end of the coal plough is connected through a lead screw, the lower end of the coal plough is connected with a coal conveying and conveying belt bracket shaft, the lead screw is connected with a lifting handle of the coal plough, and at the moment, the coal plough, the coal conveying and conveying belt bracket and the lead screw form a triangle. During operation, the lifting handle of the coal plough is manually rotated to adjust the stroke of the screw rod, so that the lifting adjustment of the coal plough is manually realized.
The full-automatic continuous coal distribution device provided by the invention is divided into a mechanical device and an electrical control part: the electric control part mainly comprises three modules: programmable logic controller PLC, converter and motor. The coal conveying belt running motor directly utilizes the output of the PLC to realize the running. Under the condition that the lifting motor of the coal plough is limited by the upper end station limit sensor and the lower end station limit sensor, the forward and reverse rotation of the motor is realized by an interlocking method. Because the function that the coal plough operation motor needs the speed governing realizes efficiency maximize, consequently this design adopts the converter to realize, at first inputs PLC through setting up the setting, through PLC control frequency converter again, comes the control motor via the converter, thereby feeds back PLC with the rotational speed of motor to, thereby output after the comparison and realize no static difference speed governing for the converter.
The specific working process of the invention is as follows: when coal on the coal conveying belt 5 enters the coal bunker, the coal plough 11 starts to descend under the operation of the coal plough lifting motor 12, the pressure stabilizing spring 15 is installed at the lower end of the coal plough lifting platform 10, the pressure between the coal plough 11 and the coal conveying belt 5 is automatically stabilized, the situation that the pressure is too high or too low is prevented from occurring, the coal plough 11 is closely contacted with the coal conveying belt 5 and then starts to move reversely with the coal conveying belt 5 at a constant speed, the current adjusting speed is 0.08m/s (the speed can be corrected according to the actual coal conveying situation), the speed of the coal conveying belt 5 is usually set to 1m/s, the coal is pushed to fall into the coal bunker 8, and then the coal uniformly falls into the coal bunker from the coal bunker 8 along with the constant speed movement of the coal plough 11; when the coal plough 11 moves to the other end of the coal bunker and touches the travel switch, the coal plough realizes the opposite movement to the ground and starts to move in the same direction with the coal conveying belt 5, and because the movement speed of the coal plough 11 is far less than the movement speed of the belt, the coal can still be pushed, and the circulation is carried out, so that the coal in the coal feeding funnel 8 can uniformly fall into the coal bunker 7 in the moving process.
Claims (10)
1. The utility model provides a full-automatic continuous type coal distributing device which characterized in that: comprises a driving belt wheel (1), a driven belt wheel (2), a belt (3), a speed reducer (4), a coal conveying belt (5), a chain (6), a coal bunker (7), a coal discharge hopper (8), a driven chain wheel (9), a coal plough lifting platform (10), a coal plough (11), a coal plough trolley (12) and a coal discharge channel (13); an output shaft of the speed reducer (4) is coaxially connected with the driving belt wheel (1); the driving belt wheel (1) is connected with the driven belt wheel (2) through a belt (3); the coal conveying conveyor belt (5) is arranged in the middle of the top of the coal bunker (7), the driven belt wheel (2) is coaxial with the driving chain wheel, the driven chain wheel (9) and the driving chain wheel are symmetrically arranged at two ends of the coal conveying conveyor belt (5), and the driving chain wheel and the driven chain wheel (9) are connected through a chain (6); a coal plough trolley (12) is fixedly arranged on the chain (6), a coal plough lifting platform (10) is arranged on the coal plough trolley (12), a coal plough (11) is arranged at the bottom of the coal plough lifting platform (10), a coal plough lifting shaft (14) is driven by a lifting motor to be adjusted, and the coal plough lifting shaft (14) is connected with the coal plough (11); the coal feeding channel (13) is arranged at two sides of the coal bunker (7); the coal plough (11) is just opposite to the surface of the coal conveying belt (5), can plough the coal blocks on the coal conveying belt (5) downwards, and is uniformly distributed into the coal bunker (7) layer by layer through the coal discharge hopper (8) and the coal discharge channel (13).
2. The full-automatic continuous coal distribution device according to claim 1, characterized in that: the driving belt wheel (1), the driven belt wheel (2) and the belt (3) form a set of power transmission structure for realizing power transmission; the driving chain wheel, the driven chain wheel (9) and the chain (6) form a set of mechanism which reciprocates along the coal conveying belt (5).
3. The full-automatic continuous coal distribution device according to claim 1 or 2, characterized in that: travel trigger switches are installed at positions, corresponding to the chains (6), of two sides of the coal bunker (7), and the travel trigger switches are connected with the speed reducer (4).
4. The full-automatic continuous coal distribution device according to claim 1, characterized in that: the coal plough trolley (12) is formed by welding channel steel.
5. The full-automatic continuous coal distribution device according to claim 1, characterized in that: the coal feeding funnel (8) is fixed on a coal plough trolley (12) through bolt connection, a coal plough lifting platform (10) is connected on two bearing channel steel of the coal plough trolley (12) through bolts, and a coal plough (11) is connected on a screw rod tail end flange of the coal plough lifting platform (10).
6. The full-automatic continuous coal distribution device according to claim 1 or 5, characterized in that: the section of the upper half part of the coal feeding funnel (8) is inverted trapezoid, the section of the lower half part of the coal feeding funnel is rectangular, the whole coal feeding funnel is large in upper part, and the middle part and the lower part of the coal feeding funnel are of hollow structures with equal calibers, and the spaces on two sides of the coal conveying belt (5) are saved by the hollow structures.
7. The full-automatic continuous coal distribution device according to claim 1, characterized in that: the coal plough lifting platform (10) comprises a platform speed reducing motor, a screw rod, a pressure stabilizing spring (15), a coal plough lifting shaft (14), a coal conveying belt vertical limiting wheel (16) and a coal conveying belt horizontal limiting wheel (17); the platform speed reducing motor is connected with a lead screw, the lead screw is vertically arranged, the lead screw is connected with the middle of the coal plough (11), and a coal plough lifting shaft (14) is connected with the side part of the coal plough (11); the vertical coal conveying belt limiting wheel (16) is contacted with two sides of the coal conveying belt (5), and the horizontal coal conveying belt limiting wheel (17) is contacted with the bottom of the coal conveying belt (5); a pressure stabilizing spring (15) is arranged between the coal plough (11) and the coal plough lifting platform (10), the pressure stabilizing spring (15) ensures that the coal plough (11) has certain balance capacity, ensures the pressure between the coal plough (11) and the coal conveying belt (5) to be stable, and prevents the coal plough (11) from being blocked.
8. The full-automatic continuous coal distribution device according to claim 1 or 7, characterized in that: the coal plough (11) comprises a plough head, a plough head bracket and a metal pressing bar; the cross section of the plowshare is triangular, the plowshare is arranged on a plowshare bracket through a metal pressing strip, and the plowshare bracket is connected with a coal plough lifting shaft (14) and a lead screw of a coal plough lifting platform (10).
9. The full-automatic continuous coal distribution device according to claim 1, characterized in that: the plowshare is made of a polymer wear-resistant material.
10. The full-automatic continuous coal distribution device according to claim 1, characterized in that: when the coal screening machine works, the driving belt wheel (1), the driven belt wheel (2) and the belt (3) are driven to move through the speed reducer (4), and then the reciprocating mechanism consisting of the driving chain wheel, the driven chain wheel (9) and the chain (6) is driven to reciprocate along the coal conveying belt (5) at the top of the coal bunker (7) (the movement speed of the reciprocating mechanism is far smaller than that of the coal conveying belt (5)), so that the coal plough trolley (12) fixed on the chain (6) is driven to reciprocate, and the coal plough (11) reciprocates along the coal conveying belt (5) to complete uniform screening and coal discharging of lump coal on the coal conveying belt (5); the coal plough lifting platform (10) is properly adjusted according to the height of the coal seam of lump coal on the coal conveying conveyor belt (5), so that the coal plough (11) is at a proper height;
the positive and negative rotation of the motors of the speed reducer (4) and the coal plough lifting platform (10) are controlled by a PLC, and the corresponding travel switches complete the reciprocating motion of the coal plough (11) along the coal conveying conveyor belt (5) through the PLC and continuously operate in the whole operation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948852.9A CN112178677B (en) | 2020-09-10 | A fully automatic continuous coal distribution device |
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| CN202010948852.9A CN112178677B (en) | 2020-09-10 | A fully automatic continuous coal distribution device |
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