Flexible disturbance device and coal feeder capable of preventing outlet from being blocked

Abstract

The utility model discloses a flexible disturbance device and a coal feeder capable of preventing an outlet from being blocked in the technical field of coal feeders, the flexible disturbance device comprises a driving motor and a speed reducer which are arranged above a coal feeder main body, the driving motor is in transmission connection with the speed reducer, and the output end of the speed reducer is connected with a flexible disturbance cable through a connecting ring; the flexible disturbance cable comprises a main steel cable, a plurality of disturbance rings are arranged on the main steel cable at intervals in the length direction of the main steel cable, each disturbance ring is composed of at least two bent auxiliary steel cables, and the upper ends and the lower ends of the auxiliary steel cables are fixed to the main steel cable through fasteners. The striking effect can be formed when the inner wall of the blanking pipeline is scraped, the cleaning effect is improved, and compared with rigid scrapers and other structures, interference to the coal falling speed can be reduced; by using the coal feeder, the blockage fault of the blanking pipeline can be greatly reduced, and the operation and maintenance cost of equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to a flexible disturbance device and a coal feeder capable of preventing an outlet from being blocked, belonging to the technical field of coal feeders. Background Art

[0002] The coal feeding system is a crucial component of thermal power plants, and its operation directly impacts the safety and economic efficiency of boiler operation. Among all the factors that can affect the operation of the coal feeding system, blockage of the feeder's drop pipe is a seemingly simple yet recurring problem. Because coal is sourced from different manufacturers, the quality of each plant varies significantly. Furthermore, due to limited conditions, power plants struggle to use the designed coal type, and may even resort to using inferior coal. This creates numerous disadvantages for the safe and economical operation of the coal feeding system, severely disrupting the normal operation of the units.

[0003] For example, the belt coal feeder disclosed in Chinese patent CN201999503U, a pipeline transportation system that ensures that raw coal is not blocked and falls evenly, is one of the common coal feeders used in power plant pulverizing systems. When the coal feeder transports wet and sticky coal with relatively high moisture content, the coal feeder outlet pipeline is frequently blocked. Once blockage occurs, the equipment needs to be stopped and the coal drop pipe needs to be manually cleaned, affecting the safe operation of the pulverizing system. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a flexible disturbance device and a coal feeder that prevents outlet blockage.

[0005] The technical solution of the utility model is as follows:

[0006] A flexible disturbance device comprises a drive motor and a reducer installed above a coal feeder body, wherein the drive motor is in transmission connection with the reducer, and an output end of the reducer is connected to a flexible disturbance rope via a connecting ring;

[0007] The flexible disturbance rope includes a main steel cable, on which several disturbance rings are arranged at intervals along its length direction. The disturbance rings are composed of at least two bent auxiliary steel cables, and the upper and lower ends of the auxiliary steel cables are fixed to the main steel cable by fasteners.

[0008] As a preferred solution, the auxiliary steel cable is curved in an arc shape or a semicircular shape, and the upper and lower ends of the auxiliary steel cable are located on the same left and right sides of the fastener.

[0009] As a preferred solution, the auxiliary steel cable is arranged in a spiral shape, and the upper and lower ends of the auxiliary steel cable are located on different left and right sides of the fastener.

[0010] As a preferred solution, the spiral rotation direction of the auxiliary steel cable is opposite to the rotation direction of the main steel cable.

[0011] As a preferred solution, the end of the main steel cable is connected with a counterweight.

[0012] As a preferred solution, the middle outer wall of the secondary steel cable is covered with a rubber sleeve.

[0013] A coal feeder for preventing outlet blockage includes a raw coal bin, a belt conveyor chamber and a blanking pipe, wherein the raw coal bin is connected and arranged above the input end of the belt conveyor chamber, and the blanking pipe is connected and arranged below the output end of the belt conveyor chamber; it also includes a flexible disturbance device as described above, wherein the drive motor and the reducer are installed above the output end of the belt conveyor chamber, and the flexible disturbance rope is suspended in the blanking pipe.

[0014] Beneficial effects

[0015] This new flexible disturbance device, which uses a drive motor and a reducer to rotate a flexible disturbance cable, can be used to clean coal adhering to the inner wall of a coal feeder's discharge pipe. The flexible disturbance cable, made of several connected steel cables and flexible in nature, not only creates a striking effect when scraping the inner wall of the discharge pipe, improving the cleaning effect, but also reduces interference with the coal's falling rate compared to structures such as rigid scrapers. Using this new device in a coal feeder can significantly reduce discharge pipe blockages and lower equipment operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the device of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the device of the utility model;

[0018] Figure 3 This is a schematic diagram of the flexible disturbance cable structure of the utility model device Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the flexible disturbance cable structure of the utility model device Figure 2 . DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] See also Figure 2 This embodiment discloses a flexible disturbance device, comprising a drive motor 10 and a reducer 20 installed above a coal feeder body. The drive motor 10 is in transmission connection with the reducer 20. The output end of the reducer 20 is connected to a flexible disturbance rope 40 via a connecting ring 30.

[0023] The flexible disturbance rope 40 includes a main steel cable 41, and several disturbance rings are arranged at intervals along the length direction of the main steel cable 41. The disturbance ring is composed of at least two bent auxiliary steel cables 42. The upper and lower ends of the auxiliary steel cables 42 are fixed to the main steel cable 41 by fasteners 43. The flexible disturbance rope 40 rotates, and the flexible disturbance rope 40 is suspended. In the rotating state, the disturbance rings on the main steel cable 41 rotate accordingly. When the flexible disturbance rope 40 is set in the inner cavity of the pipeline, the disturbance rings can hit and scrape the materials attached to the inner cavity wall of the pipeline when working, thereby cleaning the inner wall of the pipeline.

[0024] Furthermore, as an optional solution, Figure 3 As shown, the auxiliary steel cable 42 is curved in an arc or semicircle, and the upper and lower ends of the auxiliary steel cable 42 are located on the same left and right sides of the fastener 43. The auxiliary steel cables 42 on both sides are in the same plane. The main feature of the structural design of the flexible disturbance rope 40 is that the structure is simple and easy to assemble and disassemble; the auxiliary steel cable 42 is easy to bend and deform under stress, and is more suitable for application scenarios with less material attachment or weak adhesion.

[0025] As a second option, Figure 4 As shown, the auxiliary steel cable 42 is arranged in a spiral shape, and the upper and lower ends of the auxiliary steel cable 42 are located on different left and right sides of the fastener 43. The spiral rotation direction of the auxiliary steel cable 42 is opposite to the rotation direction of the main steel cable 41. The end of the main steel cable 41 is connected to a counterweight block 44, and the middle outer wall of the auxiliary steel cable 42 is covered with a rubber sleeve 45; compared with the flexible disturbance rope 40 in the first scheme, the flexible disturbance rope 40 in this scheme is arranged in a spiral twist, and is not easy to bend and deform under force, and the spiral auxiliary steel cable 42 has a certain inclination such as a cutting angle when contacting the inner wall of the pipe, and the scraping resistance is small, and the spiral steel cable can also play a downward guiding role for the hanging material, the counterweight block 44 can improve the hanging posture of the auxiliary steel cable 42 to avoid entanglement caused by increased speed, and the rubber sleeve 45 can prevent the steel cable from directly colliding with the inner wall of the pipe, thereby reducing wear and noise; therefore, the flexible disturbance rope 40 structure of this scheme is more suitable for application scenarios with more attachments or strong material adhesion.

[0026] Example 2

[0027] like Figure 1 As shown, this embodiment discloses a coal feeder for preventing outlet blockage, comprising a raw coal bin 50, a belt conveyor chamber 60, and a material discharge pipe 70. The raw coal bin 50 is arranged above the input end of the belt conveyor chamber 60, and the material discharge pipe 70 is arranged below the output end of the belt conveyor chamber 60. The drive motor 10 and the reducer 20 are installed above the output end of the belt conveyor chamber 60, and the flexible disturbance rope 40 is suspended in the material discharge pipe 70.

[0028] During actual operation, the drive motor 10 is started in conjunction with the coal feeder. When the coal feeder is started, the device automatically runs and cleans the coal material attached to the inner wall of the drop pipe 70 through the flexible disturbance rope 40 to avoid blockage in the drop pipe 70. When the coal feeder stops, the device can automatically stop.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flexible disturbance device, characterized in that: The invention comprises a driving motor (10) and a reducer (20) installed above a coal feeder body, wherein the driving motor (10) is transmission-connected to the reducer (20), and an output end of the reducer (20) is connected to a flexible disturbance rope (40) via a connecting ring (30); The flexible disturbance rope (40) includes a main steel cable (41), and a plurality of disturbance rings are arranged on the main steel cable (41) at intervals along its length direction. The disturbance rings are composed of at least two bent auxiliary steel cables (42), and the upper and lower ends of the auxiliary steel cables (42) are fixed to the main steel cable (41) by fasteners (43).

2. A flexible disturbance device according to claim 1, characterized in that: The auxiliary steel cable (42) is curved in an arc or semicircular shape, and the upper and lower ends of the auxiliary steel cable (42) are located on the same left and right sides of the fastener (43).

3. A flexible disturbance device according to claim 1, characterized in that: The auxiliary steel cable (42) is arranged in a spiral shape, and the upper and lower ends of the auxiliary steel cable (42) are located on different left and right sides of the fastener (43).

4. A flexible disturbance device according to claim 3, characterized in that: The spiral rotation direction of the auxiliary steel cable (42) is opposite to the rotation direction of the main steel cable (41).

5. A flexible disturbance device according to claim 3, characterized in that: The end of the main steel cable (41) is connected with a counterweight (44).

6. A flexible disturbance device according to claim 3, characterized in that: The middle outer wall of the auxiliary steel cable (42) is covered with a rubber sleeve (45).

7. A coal feeder for preventing outlet blockage, characterized in that: It includes a raw coal bin (50), a belt conveyor cavity (60) and a blanking pipe (70), wherein the raw coal bin (50) is connected and arranged above the input end of the belt conveyor cavity (60), and the blanking pipe (70) is connected and arranged below the output end of the belt conveyor cavity (60); it also includes a flexible disturbance device as described in any one of claims 1 to 6, the drive motor (10) and the reducer (20) are installed above the output end of the belt conveyor cavity (60), and the flexible disturbance rope (40) is suspended in the blanking pipe (70).

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