An online automatic coal cleaning device for a coal feeder

Abstract

This invention discloses an online automatic coal cleaning device for a coal feeder, comprising a coal hopper; a coal accumulation cleaning component, which is disposed inside the coal hopper and contacts the accumulated coal inside the hopper; used for horizontal cleaning of the coal hopper; a drive component, whose top end is disposed above the coal hopper and whose bottom end passes through the top end of the coal hopper and is fixedly connected to the coal accumulation cleaning component; a sealing reversing component, which is fixedly connected to the drive component; used to adjust the swing angle of the drive component, thereby adjusting the swing angle of the coal accumulation cleaning device; and a coal accumulation detection component, which is disposed in the easily accumulated coal area inside the coal hopper, used for real-time monitoring of coal accumulation data in the coal hopper. A PCL controller is electrically connected to the coal accumulation cleaning component, drive component, sealing reversing component, and coal accumulation detection component, used for remote control of the operating parameters of each component and receiving coal accumulation data. This invention addresses coal cleaning under high loads, avoids the dangers and heavy workload of manual cleaning, reduces economic losses during the cleaning process, and saves energy and reduces consumption.

Description

Technical Field

[0001] This invention relates to the field of coal feeder cleaning technology, and more specifically to an online automatic coal cleaning device for a coal feeder. Background Technology

[0002] Coal feeders often experience coal accumulation problems when the coal is sticky or has high moisture content. Aside from coal quality issues, the coal feeder's hopper has a design flaw. The hopper is constructed from two inverted trapezoidal cubes welded together, and the joint between the two stages is not planed or polished, resulting in rough steps. Coal particles on the feeder's conveyor belt fall in a projectile motion under centrifugal force. When the coal is sticky, some coal deposits and adheres to these steps, mainly concentrated on the side steps and the steps at the coal drop pipe opening. These projectile, sticky coal particles impact the steps, forming solid columnar structures. These accumulate and gradually increase in volume, eventually blocking the coal drop pipe opening or collapsing when the inverted trapezoidal slope of the hopper can no longer support the columnar structures, causing coal blockage in the feeder.

[0003] Currently, when coal accumulates in the coal feeder, manual cleaning is performed by opening the rear cover after stopping the feeder. This method is limited by the operating mode of the coal mill, the coal quality, and the load. Under the same load, conditions for cleaning the accumulated coal can be created by switching coal mills. Especially under high load, the accumulated coal can only be cleaned by limiting the load. Regardless of the method used, it is uneconomical, and the workload of operators and maintenance personnel is heavy. In order to reduce economic losses and save energy, an online automatic cleaning device for the coal feeder is designed based on the actual situation of the coal feeder to realize online cleaning of accumulated coal. Summary of the Invention

[0004] In view of this, the present invention provides an online automatic coal cleaning device;

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An online automatic coal cleaning device for a coal feeder, characterized in that it includes a coal hopper:

[0007] A coal cleaning assembly is disposed inside the coal hopper and comes into contact with the coal accumulation inside the coal hopper; it is used to clean the inside of the coal hopper in a horizontal direction.

[0008] A drive assembly, the top of which is positioned above the coal hopper, and the bottom end passes through the top of the coal hopper and is fixedly connected to the coal accumulation cleaning assembly;

[0009] A sealed reversing assembly is fixedly connected to the drive device; it is used to adjust the swing angle of the drive assembly, thereby adjusting the swing angle of the coal cleaning device.

[0010] A coal accumulation detection component is installed in the coal hopper in an area prone to coal accumulation, and is used to monitor the coal accumulation data in the coal hopper in real time.

[0011] The PLC controller is electrically connected to the coal accumulation cleaning component, the drive component, the sealing reversing component, and the coal accumulation detection component, and is used to remotely control the operating parameters of each component and receive coal accumulation data.

[0012] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, the coal accumulation cleaning component includes:

[0013] A coal chute is installed at the bottom of the coal hopper;

[0014] A slide rail is provided on the inner wall of the coal hopper;

[0015] An explosion-proof sweeping motor is slidably connected to the slide rail.

[0016] A wire brush, which is fixedly connected to the output shaft of the explosion-proof sweeping motor.

[0017] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, the drive assembly includes an axial drive device and a circumferential drive device;

[0018] The axial drive device comprises a second stepper servo motor, a reducer, a hollow sphere, and a hollow screw; the output end of the second stepper servo motor is connected to the input end of the reducer, and the output end of the reducer passes through the hollow sphere and is fixedly connected to the hollow screw; the connection between the second stepper servo motor and the reducer is enclosed by a connecting cylinder.

[0019] The hollow sphere is partially embedded in the center of the top of the coal hopper and is rotatably connected to the center of the top of the coal hopper.

[0020] The circumferential drive device includes a stepping reciprocating cylinder and a drive shaft; the air inlet of the stepping reciprocating cylinder is fixedly connected to the hollow screw, and its output end is connected to the drive shaft; the drive shaft is fixedly connected to the explosion-proof sweeping motor.

[0021] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, the sealing reversing assembly includes:

[0022] A support rod, which is vertically installed at the top of the coal hopper;

[0023] The third stepper servo motor is enclosed by a motor housing, and its sidewall is fixedly connected to the top of the support rod; the output shaft of the third stepper servo motor is perpendicular to the connecting cylinder.

[0024] The second threaded rod is fixedly connected to the output shaft of the third stepper servo motor.

[0025] The slide rail plate has one end fixedly connected to the motor housing and the other end extending along the threaded rod in two directions; the slide rail plate has a slide rail.

[0026] The sleeve has an internal thread that matches the threaded rod, and a protrusion on the outside; the protrusion is slidably connected to the slide rail plate.

[0027] The steering rod has one end rotatably connected to the threaded rod II and the other end rotatably connected to the connecting cylinder;

[0028] There are two limiting rods, both of which are fixedly connected to both sides of the connection between the steering rod and the connecting cylinder; the limiting rods are at an angle to the connecting cylinder.

[0029] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, the coal accumulation detection component includes:

[0030] A pressure sensor is installed at the bottom of the coal-accumulating area to detect the pressure data in the coal-accumulating area in real time.

[0031] A coal accumulation sensor has one end fixedly connected to the side wall of the coal hopper and the other end extending into the coal accumulation area; it is used to detect the amount of coal accumulated in the coal accumulation area in real time.

[0032] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, the PLC controller includes hardware equipment and software system;

[0033] The hardware device includes: a cable, an air inlet pipe, and an air outlet pipe; the cable connects the explosion-proof cleaning motor one, the stepper servo motor two, the stepper servo motor three, and the stepper reciprocating cylinder; the air inlet pipe and the air outlet pipe are connected to the connecting cylinder, and the gas flowing through them passes sequentially through the connecting cylinder, the reducer, the vacuum sphere, and the hollow screw, and enters the air inlet of the stepper reciprocating cylinder;

[0034] The software system includes a database, an analysis unit, and a processor. The database is signal-connected to the pressure sensor and the coal pile sensor, and is used to receive the pressure data and the amount of coal piled. The database contains a preset pressure matrix and a preset amount of coal piled. The analysis unit compares the pressure data with the preset pressure matrix and the amount of coal piled with the preset amount of coal piled, and generates processing instructions based on the comparison results. The processor is signal-connected to the analysis unit and electrically connected to the hardware device.

[0035] Based on a comparison between the preset pressure matrix in the database and the pressure data, a corresponding processing instruction is generated, including:

[0036] The pressure data A received by the database is used to determine whether a blockage has occurred in the coal feeder's easily clogged coal area. The preset pressure matrix A0 is set as A0(A1, A2, A3, A4), where A1 is the first preset pressure value, A2 is the second preset pressure value, A3 is the third preset pressure value, and A4 is the fourth preset pressure value, and A1... <A2<A3<A4;

[0037] The processing instruction E is used to trigger an alarm when a blockage occurs in the easily coal-accumulating area (2). A preset processing instruction matrix E0 is used, with E0(E1, E2, E3, E4) set, where E1 is the first-level processing instruction, E2 is the second-level processing instruction, E3 is the third-level processing instruction, and E4 is the fourth-level processing instruction. E1 is compared with E2 in order of importance. <E2<E3<E4;

[0038] The data analysis module generates the processing instructions based on the relationship between the pressure data A and the processing instructions E at each level;

[0039] When A < A1, the coal feeder's coal accumulation zone (2) is in a normal state;

[0040] When A1≤A<A2, the processing instruction generated is the first-level processing instruction E1;

[0041] When A2≤A<A3, the processing instruction generated is the secondary processing instruction E2;

[0042] When A3≤A<A4, the processing instruction generated is the third-level processing instruction E3;

[0043] When A4≤A, the processing instruction generated is the fourth-level processing instruction E4.

[0044] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, a corresponding processing instruction is generated by comparing the preset coal pile quantity B in the database with the coal pile quantity B0, including:

[0045] When B < B0, the coal feeder's coal accumulation zone is in a normal state;

[0046] When B≥B0, the processing instruction generated is the fourth-level processing instruction E4.

[0047] Preferably, in the above-mentioned online automatic coal cleaning device for a coal feeder, when the processor does not receive any instructions and receives a first-level processing instruction E1, it brakes the explosion-proof cleaning motor one, the stepper servo motor two, the stepper servo motor three, and the stepper servo cylinder; when the processor receives a second-level processing instruction E2, a third-level processing instruction E3, and a fourth-level processing instruction E4, it drives the explosion-proof cleaning motor one, the stepper servo motor two, the stepper servo motor three, and the stepper servo cylinder to work.

[0048] The workflow of this invention is as follows: First, the pressure sensor and the coal pile sensor send the pressure data and coal pile amount data to the database. The analysis unit compares the pressure matrix and pressure data in the database with the preset coal pile amount and compares the preset coal pile amount with the preset coal pile amount. Based on the comparison results, a processing instruction is generated and sent to the processor. When the controller receives different instructions, it controls the power supply status of the PLC controller hardware to each motor and cylinder.

[0049] When the controller receives Level 2, Level 3, and Level 4 commands: the explosion-proof cleaning motor is driven to rotate, causing the wire brush to rotate; the stepper reciprocating cylinder is driven to extend and retract, causing the wire brush to move; the second stepper servo motor is driven to rotate, and after being reduced in speed by a reducer, the wire brush rotates within the coal hopper; the third stepper servo motor is driven to push the connecting cylinder laterally through the combined movement of the threaded rod and the sleeve, and the tilt angle of the drive assembly is controlled by a limit rod; thus enabling the wire brush to clean the easily accumulated coal areas within the coal hopper; when the controller does not receive a command or receives a Level 1 command: the various motors within the device are braked.

[0050] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an online automatic coal cleaning device for a coal feeder. This device uses PLC programming to control a coal cleaning device, a sealing reversing device, an axial drive device, and a circumferential drive device. Following the shape of the coal hopper of the coal feeder, the device's cleaning trajectory is edited, and the device's stepping speed and rotation speed are controlled to achieve online automatic cleaning of coal accumulated in the coal feeder. This addresses the challenges of coal cleaning under high loads, avoiding the dangers and heavy workload associated with manual cleaning, reducing economic losses during the cleaning process, and saving energy and reducing consumption. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0052] Figure 1This is a schematic diagram of the structure of the present invention.

[0053] In the diagram: 1. Coal hopper; 2. Area prone to coal accumulation; 3. Coal chute; 4. Explosion-proof cleaning motor one; 5. Wire brush; 6. Stepper servo motor two; 7. Reducer; 8. Hollow sphere; 9. Hollow screw; 10. Connecting cylinder; 11. Stepper reciprocating cylinder; 12. Support rod; 13. Stepper servo motor three; 14. Threaded rod two; 15. Slide rail plate; 16. Sleeve; 17. Steering rod; 18. Limit rod; 19. Pressure sensor; 20. Coal pile sensor; 21. PLC controller. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Please see Figure 1 The present invention discloses an online automatic coal cleaning device for a coal feeder, specifically comprising:

[0059] In one embodiment,

[0060] An online automatic coal cleaning device for a coal feeder includes a coal hopper 1:

[0061] A coal cleaning assembly is installed inside the coal hopper 1 and comes into contact with the coal inside the coal hopper 1; it is used to clean the coal hopper 1 horizontally.

[0062] The drive assembly has its top end positioned above the coal hopper 1 and its bottom end passing through the top end of the coal hopper 1 and being fixedly connected to the coal accumulation cleaning assembly.

[0063] A sealed reversing assembly is fixedly connected to the drive unit; it is used to adjust the swing angle of the drive assembly, thereby adjusting the swing angle of the coal cleaning device.

[0064] A coal accumulation detection component is installed in the coal hopper 1 in the easily accumulated coal area 2, and is used to monitor the coal accumulation data in the coal hopper 1 in real time.

[0065] The PLC controller 21 is electrically connected to the coal accumulation cleaning component, the drive component, the sealing reversing component, and the coal accumulation detection component, and is used to remotely control the operating parameters of each component and receive coal accumulation data.

[0066] The coal cleaning component uses an explosion-proof motor with adjustable speed to drive a flexible wire brush. The wire brush makes multi-area contact with the solid coal deposits through loose steel wires. Multiple grooves are formed where the wires sweep, separating the coal and causing it to fall into the coal chute. The adjustable speed rotation method, with multiple sweeps and step-by-step segmentation, avoids excessive speed and over-sweeping, which could cause excessive vibration, motor stalling, or overcurrent damage to the equipment.

[0067] The sealing reversing assembly consists of an axially hollow internally threaded ball and a fixed outer shell assembly. It has a maximum tilt angle of 45 degrees and can rotate within an axial range of ±45°. The coal feeder has a positive pressure system of approximately 9 kPa; a spherical sealing assembly is used to prevent external leakage and to enable axial rotation.

[0068] The axial drive assembly consists of a stepper servo motor, a reducer, and a hollow screw. It drives the cleaning assembly and the cylinder in axial reciprocating motion. The servo motor drives the reducer and screw to control the stepping displacement, while the hollow screw provides air and power supply channels for the cylinder and the cleaning motor.

[0069] The radial cylinder is designed to enable the cleaning assembly to clean accumulated coal in the coal hopper and coal pipe. The size of the cleaning assembly is the same as the smallest diameter of the coal hopper, while the upper part of the coal hopper is larger. The radial displacement provided by the cylinder, combined with the ±45° angular movement range of the sealing assembly, allows for the cleaning of accumulated coal in the larger diameter section of the upper part of the coal hopper. The working environment inside the coal feeder is harsh. If a motor and gear rack are used to move the cleaning assembly, the gear rack is prone to accumulating dust and jamming. The cylinder provides better sealing and is easier to maintain.

[0070] The circumferential drive assembly consists of a stepper servo motor, a screw, a nut, and a circumferential guide groove. The stepper servo motor drives the nut on the screw to rotate, causing the screw to reciprocate. The top of the screw has a spherical end that slides in contact with the guide groove. The extension and retraction of the screw changes the axial rotation of the drive assembly within an angle of ±45°. (A stepper cylinder can be used instead of a servo motor).

[0071] The PLC controller, through PLC programming, processes position nodes, alarms, current, speed, communication parameters, etc., edits motion trajectories, and controls the near and far operating modes of the components. It controls the action parameters of the stepper servo motors and radial cylinder start solenoid valves of the coal cleaning component, axial drive component, circumferential drive component, and the coal dust removal component to control the movement distance and motion mode of the stepper servo motors and cylinders.

[0072] The beneficial effect of the above embodiments is that by organically interconnecting the dispersed components through drive, steering, adjustment and control components, a device is formed that can monitor and clean the coal feeder online and automatically.

[0073] In one embodiment,

[0074] An online automatic coal cleaning device for a coal feeder includes a coal cleaning assembly comprising: a coal drop pipe 3, which is disposed at the bottom of a coal hopper 1; a slide rail, which is disposed on the inner wall of the coal hopper 1; an explosion-proof cleaning motor 4, which is slidably connected to the slide rail; and a wire brush 5, which is fixedly connected to the output shaft of the explosion-proof cleaning motor.

[0075] The drive assembly includes an axial drive device and a circumferential drive device; the axial drive device consists of a stepper servo motor 6, a reducer 7, a hollow ball 8, and a hollow screw 9; the output end of the stepper servo motor 6 is connected to the input end of the reducer 7, and the output end of the reducer 7 passes through the hollow ball 8 and is fixedly connected to the hollow screw 9; the connection between the stepper servo motor 6 and the reducer 7 is wrapped by a connecting cylinder 10; the hollow ball 8 is partially embedded in the center of the top of the coal hopper 1 and is rotatably connected to the center of the top of the coal hopper 1.

[0076] The circumferential drive device includes a stepping reciprocating cylinder 11 and a drive shaft; the air inlet of the stepping reciprocating cylinder 11 is fixedly connected to the hollow screw 9, and its output end is connected to the drive shaft; the drive shaft is fixedly connected to the explosion-proof sweeping motor.

[0077] The sealing reversing assembly includes: a support rod 12, which is vertically installed at the top of the coal hopper 1; a stepper servo motor 13, which is enclosed by a motor housing, and the side wall of the stepper servo motor 13 is fixedly connected to the top of the support rod 12; the output shaft of the stepper servo motor 13 is perpendicular to the connecting cylinder 10; a threaded rod 14, which is fixedly connected to the output shaft of the stepper servo motor 13; a slide rail plate 15, one end of which is fixedly connected to the motor housing, and the other end extends along the direction of the threaded rod 14; a slide rail is provided on the slide rail plate 15; a sleeve 16, which has an internal thread that matches the threaded rod 14, and a protrusion on the outside; the protrusion is slidably connected to the slide rail plate 15; a steering rod 17, one end of which is rotatably connected to the threaded rod 14, and the other end of which is rotatably connected to the connecting cylinder 10; and two limiting rods 18, both of which are fixedly connected to both sides of the connection between the steering rod 17 and the connecting cylinder 10; the angle between the limiting rod 18 and the connecting cylinder 10 is 45 degrees.

[0078] The coal accumulation detection component includes: a pressure sensor 19, which is installed at the bottom of the coal accumulation area 2 to detect the pressure data at the coal accumulation area 2 in real time; and a coal pile sensor 20, one end of which is fixedly connected to the side wall of the coal hopper 1 and the other end extends into the coal accumulation area 2; used to detect the amount of coal piled up at the coal accumulation area 2 in real time.

[0079] The PLC controller 21 includes hardware devices and software systems;

[0080] The hardware includes: a cable, an air inlet pipe, and an air outlet pipe; the cable connects the explosion-proof cleaning motor 4, the stepper servo motor 6, the stepper servo motor 13, and the stepper reciprocating cylinder 11; the air inlet pipe and the air outlet pipe are connected to the connecting cylinder 10, through which the gas flows sequentially through the connecting cylinder 10, the reducer 7, the vacuum sphere, and the hollow screw 9, and enters the air inlet of the stepper reciprocating cylinder 11;

[0081] The software system includes a database, an analysis unit, and a processor. The database is connected to the pressure sensor 19 and the coal pile sensor 20 to receive pressure data and coal pile quantity. The database contains a preset pressure matrix and a preset coal pile quantity. The analysis unit compares the pressure data with the preset pressure matrix and the coal pile quantity with the preset coal pile quantity, and generates processing instructions based on the comparison results. The processor is connected to the analysis unit and electrically connected to the hardware device.

[0082] The beneficial effect of this embodiment is that the hardware device of the PLC controller supplies power to each motor, and the software device of the PLC controller controls the power supply; thereby achieving the purpose of automatic cleaning.

[0083] In one embodiment,

[0084] An online automatic coal cleaning device for a coal feeder compares and judges pressure data with a preset pressure matrix in a database, and generates corresponding processing instructions, including:

[0085] The pressure data A received by the database is used to determine whether the coal-accumulation zone 2 of the coal feeder is blocked. A preset pressure matrix A0 is defined, with A0(A1, A2, A3, A4), where A1 is the first preset pressure value, A2 is the second preset pressure value, A3 is the third preset pressure value, and A4 is the fourth preset pressure value. Furthermore, A1... <A2<A3<A4;

[0086] Processing instruction E is used to trigger an alarm when blockage occurs in the easily accumulating coal area 2. A preset processing instruction matrix E0 is used, with E0 consisting of (E1, E2, E3, E4), where E1 is the first-level processing instruction, E2 is the second-level, E3 is the third-level, and E4 is the fourth-level. The instructions are ranked according to their importance. <E2<E3<E4;

[0087] The data analysis module generates processing instructions based on the relationship between pressure data A and processing instructions E at each level;

[0088] When A < A1, the coal feeder's coal accumulation zone 2 is in normal condition;

[0089] When A1≤A<A2, the generated processing instruction is the first-level processing instruction E1;

[0090] When A2≤A<A3, the generated processing instruction is the second-level processing instruction E2;

[0091] When A3≤A<A4, the generated processing instruction is the third-level processing instruction E3;

[0092] When A4≤A, the generated processing instruction is the fourth-level processing instruction E4;

[0093] Based on a comparison between the preset coal stockpile quantity B and the coal stockpile quantity B0 in the database, corresponding processing instructions are generated, including:

[0094] When B < B0, the coal feeder's coal accumulation zone 2 is in normal condition;

[0095] When B≥B0, the generated processing instruction is the fourth-level processing instruction E4;

[0096] When the processor does not receive any instructions or receives the first-level processing instruction E1, it brakes the explosion-proof sweeping motor 4, the stepper servo motor 6, the stepper servo motor 13, and the stepper servo cylinder. When the processor receives the second-level processing instruction E2, the third-level processing instruction E3, and the fourth-level processing instruction E4, it drives the explosion-proof sweeping motor 4, the stepper servo motor 6, the stepper servo motor 13, and the stepper servo cylinder to work.

[0097] The beneficial effects of the above embodiments are: the processing command level is based on different cleaning schemes according to the coal accumulation situation, and it is also used to prioritize the maintenance of equipment with higher command levels when coal accumulation occurs simultaneously; for example: Level 1 alarm information E1 is mild, which does not affect the normal operation of the equipment, and can be maintained on the scheduled maintenance date; Level 2 alarm information E2 is normal coal accumulation, which requires cleaning of the device; Level 3 alarm information E3 is emergency blockage, where coal accumulation has affected the normal operation of the device and requires timely cleaning; Level 4 alarm information E4 is severe blockage, where the device may be seriously damaged, and maintenance personnel must wear protective equipment during maintenance to ensure personal safety; the corresponding working mode of the command is set to achieve the effect of braking and driving the device.

[0098] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0099] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An online automatic coal cleaning device for a coal feeder, characterized in that, Including coal hopper (1): A coal cleaning assembly is disposed inside the coal hopper (1) and in contact with the coal sludge inside the coal hopper (1); it is used to clean the coal hopper (1) in a horizontal direction. The drive assembly has its top end positioned above the coal hopper (1) and its bottom end passing through the top end of the coal hopper (1) and fixedly connected to the coal cleaning assembly. A sealed reversing assembly is fixedly connected to the drive assembly; it is used to adjust the swing angle of the drive assembly, thereby adjusting the swing angle of the coal cleaning assembly. A coal accumulation detection component is installed in the coal hopper (1) in the easily accumulated coal area (2) for real-time monitoring of coal accumulation data in the coal hopper (1); The PLC controller (21) is electrically connected to the coal cleaning component, the drive component, the sealing reversing component and the coal detection component, and is used to remotely control the operating parameters of each component and receive coal accumulation data. The coal accumulation cleaning assembly includes: A coal drop pipe (3) is installed at the bottom of the coal hopper (1); The slide rail is provided on the inner wall of the coal hopper (1); An explosion-proof sweeping motor (4) is slidably connected to the slide rail; A wire brush (5) is fixedly connected to the output shaft of the explosion-proof cleaning motor; The drive assembly includes an axial drive device and a circumferential drive device; The axial drive device comprises a second stepper servo motor (6), a reducer (7), a hollow sphere (8), and a hollow screw (9); the output end of the second stepper servo motor (6) is connected to the input end of the reducer (7), and the output end of the reducer (7) passes through the hollow sphere (8) and is fixedly connected to the hollow screw (9); the connection between the second stepper servo motor (6) and the reducer (7) is wrapped by a connecting cylinder (10); The hollow sphere (8) is partially embedded at the center of the top of the coal hopper (1) and is rotatably connected to the center of the top of the coal hopper (1); The circumferential drive device includes a stepping reciprocating cylinder (11) and a drive shaft; the air inlet of the stepping reciprocating cylinder (11) is fixedly connected to the hollow screw (9), and its output end is connected to the drive shaft; the drive shaft is fixedly connected to the explosion-proof cleaning motor. The sealed reversing assembly includes: A support rod (12) is vertically installed at the top of the coal hopper (1); A stepper servo motor three (13) is enclosed by a motor housing, and the side wall of the stepper servo motor three (13) is fixedly connected to the top of the support rod (12); the output shaft of the stepper servo motor three (13) is perpendicular to the connecting cylinder (10); Threaded rod two (14) is fixedly connected to the output shaft of the stepper servo motor three (13); The slide rail plate (15) has one end fixedly connected to the motor housing and the other end extending along the direction of the threaded rod (14); The slide rail plate (15) has a slide rail; The sleeve (16) has an internal thread that matches the threaded rod (14) inside and a protrusion on the outside; the protrusion is slidably connected to the slide rail plate (15); The steering rod (17) has one end rotatably connected to the threaded rod (14) and the other end rotatably connected to the connecting cylinder (10); There are two limiting rods (18), both of which are fixedly connected to both sides of the connection between the steering rod (17) and the connecting cylinder (10); the angle between the limiting rod (18) and the connecting cylinder (10) is 45 degrees.

2. The online automatic coal cleaning device for a coal feeder according to claim 1, characterized in that, The coal accumulation detection component includes: A pressure sensor (19) is installed at the bottom of the coal-accumulating area (2) to detect the pressure data at the coal-accumulating area (2) in real time. A coal accumulation sensor (20) is fixedly connected at one end to the side wall of the coal hopper (1) and extends at the other end into the coal accumulation area (2); it is used to detect the amount of coal piled up in the coal accumulation area (2) in real time.

3. The online automatic coal cleaning device for a coal feeder according to claim 2, characterized in that, The PLC controller (21) includes hardware devices and software systems; The hardware device includes: a cable, an air inlet pipe, and an air outlet pipe; the cable connects the explosion-proof cleaning motor one (4), the stepper servo motor two (6), the stepper servo motor three (13), and the stepper reciprocating cylinder (11); the air inlet pipe and the air outlet pipe are connected to the connecting cylinder (10), and the gas flowing through them passes through the connecting cylinder (10), the reducer (7), the hollow sphere (8), and the hollow screw (9) in sequence, and enters the air inlet of the stepper reciprocating cylinder (11); The software system includes a database, an analysis unit, and a processor; the database is signal-connected to the pressure sensor (19) and the coal pile sensor (20) to receive the pressure data and the amount of coal piled; the database contains a preset pressure matrix and a preset amount of coal piled; the analysis unit compares the pressure data with the preset pressure matrix and the amount of coal piled with the preset amount of coal piled, and generates processing instructions based on the comparison results; the processor is signal-connected to the analysis unit and electrically connected to the hardware device. Based on a comparison between the preset pressure matrix in the database and the pressure data, a corresponding processing instruction is generated, including: The pressure data A received by the database is used to determine whether the coal-accumulation area (2) of the coal feeder is blocked. The preset pressure matrix A0 is set as A0(A1,A2,A3,A4), where A1 is the first preset pressure value, A2 is the second preset pressure value, A3 is the third preset pressure value, and A4 is the fourth preset pressure value, and A1 is the fourth preset pressure value. <A2<A3<A4; The processing instruction E is used to trigger an alarm when a blockage occurs in the easily coal-accumulating area (2). A preset processing instruction matrix E0 is used, with E0(E1,E2,E3,E4) set, where E1 is the first-level processing instruction, E2 is the second-level processing instruction, E3 is the third-level processing instruction, and E4 is the fourth-level processing instruction. E1 is compared with E2 in order of importance. <E2<E3<E4; The analysis unit generates the processing instructions based on the relationship between the pressure data A and the processing instructions E at each level; When A < A1, the coal feeder's coal accumulation zone (2) is in a normal state; When A1≤A<A2, the processing instruction generated is the first-level processing instruction E1; When A2≤A<A3, the processing instruction generated is the secondary processing instruction E2; When A3≤A<A4, the processing instruction generated is the third-level processing instruction E3; When A4≤A, the processing instruction generated is the fourth-level processing instruction E4.

4. The online automatic coal cleaning device for a coal feeder according to claim 3, characterized in that, Based on the comparison between the preset coal stockpile quantity B in the database and the coal stockpile quantity B0, a corresponding processing instruction is generated, including: When B < B0, the coal feeder's coal accumulation zone (2) is in a normal state; When B≥B0, the processing instruction generated is the fourth-level processing instruction E4.

5. The online automatic coal cleaning device for a coal feeder according to claim 4, characterized in that, When the processor does not receive any instructions and receives the first-level processing instruction E1, it brakes the explosion-proof cleaning motor 1 (4), the stepper servo motor 2 (6), the stepper servo motor 3 (13), and the stepper servo cylinder; when the processor receives the second-level processing instruction E2, the third-level processing instruction E3, and the fourth-level processing instruction E4, it drives the explosion-proof cleaning motor 1 (4), the stepper servo motor 2 (6), the stepper servo motor 3 (13), and the stepper servo cylinder to work.

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