A dust removal device for a coal conveying system

Abstract

The utility model discloses a dust collector body, centrifugal fan, rapping mechanism and flushing mechanism set up on the dust collector body are provided, and further include linkage mechanism, the linkage mechanism includes physical connecting piece, one end of physical connecting piece is operable to connect to the drive mechanism or start -stop signal generating device of coal conveying belt, and the other end is connected to the control switch of centrifugal fan, makes the start -stop of centrifugal fan, rapping mechanism and flushing mechanism and the running state of coal conveying belt keep synchronous, the utility model realizes the start -stop of dust collector and coal conveying belt completely synchronous, and the invalid energy consumption of traditional 24 hours continuous operation mode is prevented, through laser dust sensor and DCS data feedback, realize the real -time monitoring of dust concentration and the dynamic intelligent adjustment of dust removal intensity, further optimize energy use efficiency, realize remote centralized monitoring, and equipment maintenance time and personnel field operation intensity are reduced greatly.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, specifically, it relates to a dust removal device for a coal conveying system. Background Technology

[0002] In coal-fired power plants, dust pollution generated by the coal conveying system is a key focus of environmental protection efforts. Traditional dust removal devices typically operate continuously for 24 hours, which has the following drawbacks: Energy waste: The dust collector operates independently of the coal conveyor belt and still needs to work at full power even when there is no coal transport, resulting in high plant power consumption.

[0003] High reliance on manual operation: Start-up and shutdown operations require on-site manual control, resulting in delayed response and increased safety risks.

[0004] High equipment wear and tear: Continuous operation exacerbates the wear and tear on mechanical parts, shortening the equipment's lifespan.

[0005] Low control precision: lack of real-time dust concentration monitoring, making it impossible to dynamically adjust dust removal intensity.

[0006] While existing technologies attempt remote control, they have not achieved deep coordination with the operating status of the coal conveyor belt, making it difficult to balance energy saving and dust removal efficiency. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, the purpose of this utility model is to provide a dust removal device for a coal conveying system, comprising a dust collector body, a centrifugal fan mounted on the dust collector body, a rapping mechanism, and a flushing mechanism, and also including a linkage mechanism; The linkage mechanism includes a physical connector, one end of which is operably connected to the drive mechanism or start / stop signal generator of the coal conveyor belt, and the other end is connected to the control switch of the centrifugal fan, so that the start / stop of the centrifugal fan, the rapping mechanism and the flushing mechanism are synchronized with the operating status of the coal conveyor belt.

[0008] As a preferred embodiment, the system also includes a dust detection component, which is mounted above the coal conveyor belt via a bracket.

[0009] As a preferred embodiment, the dust detection component includes a laser dust sensor and a protective cover, with the detection end of the laser dust sensor facing the material surface of the coal conveyor belt.

[0010] As a preferred embodiment, the system also includes a control cabinet located near the dust collector body, with the other end of the physical connector of the linkage mechanism connected to the linkage input interface of the control cabinet.

[0011] As a preferred embodiment, the centrifugal fan is fixed to the top shell of the dust collector body via a mounting bracket; The rapping mechanism includes a rapping motor and a rapping hammer. The rapping motor is fixed to the side housing of the dust collector body by a mounting bracket. The flushing mechanism includes a flushing solenoid valve and a spray pipe, wherein the nozzle of the spray pipe extends above the filter bag area of ​​the dust collector body.

[0012] As a preferred embodiment, the control cabinet is equipped with status indicator lights and an audible and visual alarm on its outer casing.

[0013] As a preferred embodiment, the physical connecting member is a mechanical linkage or a rigid connecting rod, one end of which is fixed to the linkage shaft of the coal conveyor belt drive motor through a first connecting member, and the other end of which acts on the operating handle of the control switch through a second connecting member.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention achieves complete synchronization between the dust removal device and the coal conveyor belt drive signal through a mechanical linkage mechanism, eliminating the ineffective energy consumption of the traditional 24-hour continuous operation mode and significantly reducing plant power consumption. Through laser dust sensors and DCS data feedback, it enables real-time monitoring of dust concentration and dynamic intelligent adjustment of dust removal intensity, further optimizing energy efficiency. The modular structure design and centralized control cabinet enable rapid disassembly and maintenance of key components and remote centralized monitoring of operating status, significantly reducing equipment maintenance time and on-site personnel workload, and improving system availability and safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the specific structure of this utility model; Figure 2 This is a schematic diagram of the individual structure of the coal conveyor belt of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] A dust removal device for a coal conveying system includes a dust collector body 1, a centrifugal fan 2 mounted on the dust collector body 1, a rapping mechanism 3 and a flushing mechanism 5, and also includes a linkage mechanism 8. The linkage mechanism 8 includes a physical connector 11. One end of the physical connector 11 is operably connected to the drive mechanism or start / stop signal generator of the coal conveyor belt, and the other end is connected to the control switch of the centrifugal fan 2, so that the start / stop of the centrifugal fan 2, the rapping mechanism 3, the dust removal mechanism 4 and the flushing mechanism 5 are synchronized with the operating status of the coal conveyor belt 10.

[0018] When the coal conveyor belt starts, the physical connector 11 pulls the switch handle of the centrifugal fan 2, so that the centrifugal fan 2, the rapping mechanism 3 and the flushing mechanism 5 can start and run synchronously, thereby performing dust removal operation during coal conveying, realizing the function of "dust removal while conveying coal", which can effectively avoid the problem of no-load power consumption and save a lot of energy.

[0019] In a preferred embodiment, the physical connector 11 is a mechanical link or a rigid link. One end of the link is fixed to the linkage shaft of the coal conveyor belt drive motor through the first connector 151, and the other end acts on the operating handle of the control switch through the second connector 152. The rigid link acts as a mechanical handle, which can resist electromagnetic interference and thus ensure the reliability of synchronization.

[0020] It should be noted that since the coal conveying system is usually composed of multiple belts, each section needs to be dusted independently, that is, each belt section needs this device. Therefore, the distance between the drive mechanism or start / stop signal generator of each coal conveying belt and the control switch of the centrifugal fan 2 is not too long. Therefore, it is feasible to use a mechanical linkage or rigid connecting rod as a mechanical handle. As a preferred option, the physical connection 11 can also be a wire rope or an electromechanical hybrid signal conversion device.

[0021] In a preferred embodiment, a dust detection component 6 is also included, which is mounted above the coal conveyor belt 10 via a bracket 9.

[0022] In a preferred embodiment, the dust detection component 6 includes a laser dust sensor 13 and a protective cover 14, with the detection end of the laser dust sensor 13 facing the material surface of the coal conveyor belt 10.

[0023] The laser dust sensor 13 is suspended 1.5m above the belt via bracket 9 to detect dust concentration in real time and transmit the data to the DCS system. When the concentration exceeds the standard, an alarm is triggered and the dust removal intensity is increased. Combined with fuzzy control strategy, the dust removal power is dynamically adjusted to further reduce energy consumption under the premise of meeting emission standards.

[0024] In a preferred embodiment, a control cabinet 7 is also included. The control cabinet 7 is located near the dust collector body 1. The other end of the physical connector 11 of the linkage mechanism 8 is connected to the linkage input interface 16 of the control cabinet 7. In a preferred embodiment, the outer shell of the control cabinet 7 is equipped with a status indicator light 18 and an audible and visual alarm 19. The linkage input interface 16 receives belt start and stop signals, controls the dust removal process through a PLC program, visualizes the operating status through the indicator light 18, and activates the audible and visual alarm 19 in case of a fault, reducing on-site personnel operation, lowering personnel safety risks and labor intensity.

[0025] In a preferred embodiment, the centrifugal fan 2 is fixed to the top shell of the dust collector body 1 by the mounting base 201 to ensure negative pressure dust collection efficiency; The rapping mechanism 3 includes a rapping motor 31 and a rapping hammer 32. The rapping motor 31 is fixed to the side shell of the dust collector body 1 by a mounting base 201. The rapping hammer 32 is driven by the rapping motor 31 and periodically removes the dust accumulated on the filter bag by rapping. The filter bag is connected to the fan through a closed pipeline. The rinsing mechanism 5 includes a rinsing solenoid valve 51 and a spray pipe 52. The nozzle 53 of the spray pipe 52 extends above the filter bag area of ​​the dust collector body 1 and can spray towards the filter bag area through the nozzle 53 to perform dust suppression operation.

[0026] The complete workflow of this device is as follows: 1. Start-up phase: The coal conveyor belt drive motor starts, and the linkage shaft drives the physical connecting part 11 to move.

[0027] When the control switch is closed, centrifugal fan 2 and rapping mechanism 3 start synchronously.

[0028] The DCS system receives the belt running signal and activates the dust collection monitoring screen.

[0029] 2. Operational Phase: The laser dust sensor 13 monitors dust concentration in real time and uploads the data to the DCS.

[0030] When the concentration exceeds the preset value, such as 20 mg / m³, the PLC automatically increases the cleaning frequency and starts the flushing mechanism 5.

[0031] The equipment status is displayed via indicator light 18, and control cabinet 7 supports remote emergency stop operation.

[0032] 3. Shutdown phase: When the belt stops, the physical connector 11 resets and disconnects the control switch, and the dust removal device stops after a 5-minute delay (to complete the cleaning of residual dust).

[0033] If the dust concentration continues to exceed the standard, the audible and visual alarm 19 will be activated and an alarm will be sent to the central control room.

[0034] 4. Maintenance Mode: Switching to control cabinet 7 allows for manual testing of the rapping and flushing functions.

[0035] The 53 spray nozzles support quick disassembly and replacement.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art, and their specifications and models can be selected according to actual conditions.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical embodiments described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust removal device for a coal conveying system, characterized in that, It includes a dust collector body (1), a centrifugal fan (2) installed on the dust collector body (1), a rapping mechanism (3) and a flushing mechanism (5), and also includes a linkage mechanism (8); The linkage mechanism (8) includes a physical connector (11), one end of which is operably connected to the drive mechanism or start / stop signal generator of the coal conveyor belt, and the other end is connected to the control switch of the centrifugal fan (2), so that the start / stop of the centrifugal fan (2), the rapping mechanism (3) and the flushing mechanism (5) are synchronized with the operating status of the coal conveyor belt.

2. A dust removal device for a coal conveying system according to claim 1, characterized in that, It also includes a dust detection component (6), which is mounted above the coal conveyor belt (10) via a bracket (9).

3. A dust removal device for a coal conveying system according to claim 2, characterized in that, The dust detection component (6) includes a laser dust sensor (13) and a protective cover (14), with the detection end of the laser dust sensor (13) facing the material surface of the coal conveyor belt (10).

4. A dust removal device for a coal conveying system according to claim 1, characterized in that, It also includes a control cabinet (7), which is located near the dust collector body (1), and the other end of the physical connector (11) of the linkage mechanism (8) is connected to the linkage input interface (16) of the control cabinet (7).

5. A dust removal device for a coal conveying system according to claim 1, characterized in that, The centrifugal fan (2) is fixed to the top shell of the dust collector body (1) by a mounting base (201); The vibrating mechanism (3) includes a vibrating motor (31) and a vibrating hammer (32). The vibrating motor (31) is fixed to the side housing of the dust collector body (1) by a mounting base (201). The flushing mechanism (5) includes a flushing solenoid valve (51) and a spray pipe (52), the nozzle (53) of which extends above the filter bag area of ​​the dust collector body (1).

6. A dust removal device for a coal conveying system according to claim 4, characterized in that, The control cabinet (7) is equipped with a status indicator light (18) and an audible and visual alarm (19) on its outer casing.

7. A dust removal device for a coal conveying system according to claim 1, characterized in that, The physical connector (11) is a mechanical link or a rigid link. One end of the link is fixed to the linkage shaft of the coal conveyor belt drive motor through the first connector (151), and the other end acts on the operating handle of the control switch through the second connector (152).

Images