Coal blockage preventing device for raw coal bunker

Abstract

The utility model discloses a raw coal bunker coal blocking prevention device which comprises a coal hopper, the outer wall of the coal hopper is fixedly sleeved with two circular rings, the outer walls of the two circular rings are both fixedly connected with two U-shaped blocks, the inner walls of the four U-shaped blocks are all rotationally connected with pulleys, and the four pulleys are each sleeved with a steel wire rope in a sliding mode in pairs. A coal scraping ring is connected into the coal bucket in a sliding mode, the two ends of each steel wire rope are fixedly connected with the outer wall of the coal scraping ring, and a transmission mechanism is arranged on the outer wall of the coal bucket. According to the coal hopper, the circular ring, the U-shaped block, the pulley, the steel wire ropes, the coal scraping ring, the rhombic column, the conical guide sleeve, the equipment frame, the motor, the winding roller and the disc are arranged, the two steel wire ropes drive the coal scraping ring to move, coal in the coal hopper is dredged, the balance during coal arching is broken, and the coal is forced to flow integrally, so that the coal blockage phenomenon is prevented, and manual knocking is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of raw coal bunkers, in particular to a raw coal bunker anti-coal blocking device. Background Art

[0002] Coal bunker blockage is a common problem in coal-fired power plants. Major blockages include coal arching, sticking to the walls, and agglomeration. These blockages prevent the natural flow of coal from the bunker under the influence of gravity, leading to interrupted coal flow and a coal shortage. In mild cases, a bunker blockage can cause the effective volume within the bunker to decrease, creating a "rathole" and causing a coal feeder to shut down. In severe cases, multiple feeders can shut down simultaneously, causing unplanned boiler output reduction and even boiler fires to extinguish.

[0003] In the existing technology, the location where coal blockage occurs in the raw coal bin is mainly at the lower coal hopper. The main coal blockage phenomena include raw coal bridging, sticking to the wall, and compaction. After the blockage at the lower coal hopper occurs, it is necessary to manually knock on the outer wall of the lower coal hopper to create vibration to solve the coal blockage problem. This is easy to damage the pipe wall and is time-consuming and labor-intensive for the staff. Therefore, we propose a raw coal bin anti-blocking device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a device for preventing coal blocking in a raw coal bunker.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for preventing coal blockage in a raw coal bin comprises a coal hopper, the outer wall of the coal hopper being fixedly sleeved with two circular rings, the outer walls of the two circular rings being fixedly connected to two U-shaped blocks, the inner walls of the four U-shaped blocks being rotatably connected to pulleys, the four pulleys being slidably sleeved with steel wire ropes in groups of two, a coal scraping ring being slidably connected inside the coal hopper, both ends of the two steel wire ropes being fixedly connected to the outer wall of the coal scraping ring, and a transmission mechanism being provided on the outer wall of the coal hopper.

[0007] Preferably, the transmission mechanism includes two equipment frames, the outer walls of the two equipment frames are fixedly connected to the outer wall of the coal hopper, the interiors of the two equipment frames are fixedly connected to motors, one end of the output shafts of the two motors are fixedly connected to winding rollers, the outer walls of the two winding rollers are fixedly sleeved with discs, and the wire rope is driven to move by setting a transmission mechanism, which is similar to the existing circular conveying method.

[0008] Preferably, a docking flange is fixedly connected to the top of the coal hopper, and a plurality of mounting holes are evenly opened on the outer wall of the docking flange.

[0009] Preferably, a plurality of diamond-shaped columns are fixedly connected to the inner wall of the coal scraping ring, and the flow of the coal is increased by providing the plurality of diamond-shaped columns.

[0010] Preferably, the outer wall of the coal hopper is fixed with four conical guide sleeves, and the inner walls of the four conical guide sleeves are respectively slidably connected to the outer walls of both ends of the two steel ropes. The conical guide sleeves are provided to assist the steel ropes in moving to prevent coal from flowing out.

[0011] Preferably, a bearing is fixedly sleeved on one end of the winding roller, and the outer ring of the bearing is fixedly connected to the inner wall of the equipment frame, and the bearing is provided to assist the winding roller in rotating.

[0012] Preferably, the outer walls of the two steel wire ropes are respectively wound on two winding rollers.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution includes a circular ring, U-shaped block, pulley, wire rope, coal scraper ring, diamond column, tapered guide sleeve, equipment frame, motor, winding roller and disc. Two wire ropes drive the coal scraper ring to move, dredge the coal in the coal hopper, break the balance of coal arch, and force the coal to flow as a whole, thereby preventing coal blockage without manual knocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for preventing coal blockage in a raw coal bunker proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a device for preventing coal blockage in a raw coal bunker proposed by the present invention;

[0018] Figure 3 This utility model proposes a device for preventing coal from blocking raw coal bunker Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 This is a schematic diagram of the steel wire rope, motor, winding roller and disc structure of a raw coal bunker anti-blocking device proposed by the utility model.

[0020] In the figure: 1. Coal hopper; 2. Docking flange; 3. Mounting hole; 4. Ring; 5. U-shaped block; 6. Pulley; 7. Wire rope; 8. Coal scraper ring; 9. Diamond column; 10. Conical guide sleeve; 11. Equipment frame; 12. Motor; 13. Winding roller; 14. Disc. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Depend on Figures 1-4 As shown, it relates to a device for preventing coal blockage in a raw coal bin, comprising a coal hopper 1, a docking flange 2 being fixedly connected to the top of the coal hopper 1, a plurality of mounting holes 3 being evenly opened on the outer wall of the docking flange 2, and a flange being provided on the coal feeder at the bottom of the raw coal bin, which cooperates with the docking flange 2.

[0023] The outer wall of the coal hopper 1 is fixed with two circular rings 4, and the outer walls of the two circular rings 4 are fixedly connected to two U-shaped blocks 5. The circular rings 4 support the U-shaped blocks 5. The inner walls of the four U-shaped blocks 5 are rotatably connected to pulleys 6 through existing bearings. The four pulleys 6 are grouped in pairs and are respectively provided with steel wire ropes 7. The four pulleys 6 assist the steel wire ropes 7 in moving.

[0024] The coal hopper 1 is internally slidably connected to a coal scraping ring 8, the outer ring of which is slidably connected to the inner wall of the coal hopper 1, and the inner wall of the coal scraping ring 8 is fixedly connected to a plurality of diamond columns 9, which are quadrangular columns. Both ends of the two steel wire ropes 7 are fixedly connected to the outer wall of the coal scraping ring 8, and the steel wire ropes 7 drive the coal scraping ring 8 to move up and down.

[0025] Four conical guide sleeves 10 are fixedly connected to the outer wall of the coal hopper 1 , and the inner walls of the four conical guide sleeves 10 are slidably connected to the outer walls of both ends of the two steel ropes 7 respectively.

[0026] A transmission mechanism is provided on the outer wall of the coal hopper 1, and the transmission mechanism includes two equipment frames 11. The outer walls of the two equipment frames 11 are fixedly connected to the outer wall of the coal hopper 1. The interiors of the two equipment frames 11 are fixedly connected with motors 12. The two motors 12 are synchronously operated through an existing synchronous controller. The voltage and current of the two motors 12 can be adjusted to keep the speed and phase of the two motors 12 consistent, so that the synchronous operation of the two motors 12 can be achieved. The equipment frames 11 protect the motors 12.

[0027] One end of the output shaft of the two motors 12 is fixedly connected to a winding roller 13, and one end of the winding roller 13 is fixedly sleeved with a bearing. The outer ring of the bearing is fixedly connected to the inner wall of the equipment frame 11. The outer walls of the two winding rollers 13 are fixedly sleeved with a disc 14, and the outer walls of the two steel ropes 7 are respectively wound on the two winding rollers 13.

[0028] Working principle: When in use, the coal hopper 1 is fixed to the coal feeder at the bottom of the raw coal bin through the docking flange 2 and multiple mounting holes 3 on the top and the existing bolts. When unloading, the coal feeder discharges the material and the coal is discharged through the coal hopper 1. When the coal forms an arch and is blocked during discharge, the two motors 12 are turned to drive the two winding rollers 13 to rotate. Since the two steel ropes 7 are wound on the winding rollers 13, the two ends of the steel ropes 7 move up and down after the winding rollers 13 rotate, thereby driving the coal scraper ring 8 to move, and the movement of the coal scraper ring 8 drives the multiple diamond columns 9 to move, thereby dredging the coal in the coal hopper 1, breaking the balance of the coal arch, and forcing the coal to flow as a whole, thereby preventing coal blockage.

[0029] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here. The components, structures and principles known to technical personnel in this field can be known by technical personnel through technical manuals or through conventional experimental methods.

[0030] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for preventing coal blockage in a raw coal bunker, comprising a coal hopper (1), characterized in that: The outer wall of the coal hopper (1) is fixedly sleeved with two circular rings (4), the outer walls of the two circular rings (4) are fixedly connected to two U-shaped blocks (5), the inner walls of the four U-shaped blocks (5) are rotatably connected to pulleys (6), and the four pulleys (6) are respectively slidably sleeved with steel wire ropes (7) in pairs. The interior of the coal hopper (1) is slidably connected to a coal scraping ring (8), and both ends of the two steel wire ropes (7) are fixedly connected to the outer wall of the coal scraping ring (8). The outer wall of the coal hopper (1) is provided with a transmission mechanism.

2. The device for preventing coal blockage in raw coal bunker according to claim 1, characterized in that: The transmission mechanism comprises two equipment frames (11), the outer walls of the two equipment frames (11) are fixedly connected to the outer wall of the coal hopper (1), the interiors of the two equipment frames (11) are fixedly connected to motors (12), one end of the output shafts of the two motors (12) are fixedly connected to winding rollers (13), and the outer walls of the two winding rollers (13) are fixedly sleeved with discs (14).

3. The device for preventing coal blockage in raw coal bunker according to claim 1, characterized in that: A docking flange (2) is fixedly connected to the top of the coal hopper (1), and a plurality of mounting holes (3) are evenly formed on the outer wall of the docking flange (2).

4. The device for preventing coal blockage in raw coal bunker according to claim 1, characterized in that: A plurality of rhombus-shaped columns (9) are fixedly connected to the inner wall of the coal scraping ring (8).

5. The device for preventing coal blockage in raw coal bunker according to claim 1, characterized in that: Four conical guide sleeves (10) are fixedly connected to the outer wall of the coal hopper (1), and the inner walls of the four conical guide sleeves (10) are respectively slidably connected to the outer walls of both ends of the two steel ropes (7).

6. The device for preventing coal blockage in raw coal bunker according to claim 2, characterized in that: A bearing is fixedly sleeved on one end of the winding roller (13), and the outer ring of the bearing is fixedly connected to the inner wall of the equipment frame (11).

7. The device for preventing coal blockage in raw coal bunker according to claim 2, characterized in that: The outer walls of the two steel wire ropes (7) are respectively wound on two winding rollers (13).

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