Blockage removing device of weighing coal feeder

Abstract

The utility model relates to the technical field of coal conveying, and particularly discloses a blockage clearing device of a weighing coal feeder, which is used for solving the problem of crushed material accumulation in the coal conveying process in the prior art. Comprising a dustproof arc plate arranged in a conveying shell, and the dustproof arc plate is located below a conveying belt set. A horizontally-arranged material collecting flat plate is arranged below the dustproof arc plate, a material scraping mechanism used for pushing the coal to one side is arranged at the upper end of the material collecting flat plate, and a material blowing mechanism used for blowing away the coal on the side wall of the conveying shell is further arranged below the dustproof arc plate. Crushed coal on the inner wall of the conveying shell can be blown away, the crushed coal is discharged through scraping pushing, the situation that normal conveying operation is affected by impurity accumulation is avoided, during overhauling, the interior is clean, internal accumulated dust does not need to be treated independently, the first-aid repair time is saved, the continuous operation fault rate is linearly decreased, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal transportation, in particular to a blockage clearing device for a weighing coal feeder. Background Art

[0002] With the development of major thermal power plant units and coal chemical industry, the use of weighing coal feeders has also increased. This equipment is one of the key equipment for production regulation. It can continuously and evenly feed raw coal into the pulverizer or boiler. Through the control system, it can accurately weigh and display the coal feeding situation during operation. However, in some operations, inaccurate values ​​often occur, belts deviate, and rollers and anti-deflection rollers are often damaged. After disassembly and inspection, it was found that a large amount of coal powder and crushed coal accumulated on both sides of the lower part of the belt, affecting the normal operation of various components. This situation is also a key issue affecting the long-term operation of the equipment.

[0003] Based on this, a weighing coal feeder blockage clearing device is now provided to eliminate the drawbacks of the existing device. Utility Model Content

[0004] The purpose of the utility model is to provide a weighing coal feeder blockage clearing device, which solves the problem of crushed material accumulation in the coal transportation process in the prior art.

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

[0006] The weighing coal feeder blockage clearing device includes a dust-proof arc plate arranged inside the transmission shell, and the dust-proof arc plate is located below the transmission belt group; a horizontally arranged aggregate plate is provided below the dust-proof arc plate, and a scraping mechanism for pushing the coal to one side is provided at the upper end of the aggregate plate, and a blowing mechanism for blowing away the coal on the side wall of the transmission shell is also provided below the dust-proof arc plate.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the dustproof arc plate includes a horizontally arranged dustproof plate body, the dustproof plate body is connected to the clip through a countersunk bolt, the clip is sleeved on the bracket rod inside the transmission shell, and the clip is provided with a fixing bolt for locking the clip position, and there is a flow gap between the protective skirt and the inner wall of the transmission shell.

[0009] In an optional solution: both ends of the dustproof plate body are provided with protective skirts extending toward the inner wall of the transmission shell.

[0010] In an optional solution: skirt belts matching the upper end surfaces of the dust-proof arc plates are symmetrically provided on both sides of the transmission surface of the transmission belt group.

[0011] In an optional solution: the blowing mechanism includes a jet blowpipe arranged below the dust arc plate, the air inlet end of the jet blowpipe is provided with a connecting flange for connecting to a high-pressure air source, and the jet blowpipe is provided with multiple blowing heads along the transmission direction of the conveyor belt group.

[0012] In an optional solution: the blowing cutter head includes a cutter head air source connector connected to the air outlet end of the air jet blowpipe, and a plurality of air knife flow channels are provided at the lower end of the cutter head air source connector, and the lower end of each air knife flow channel is provided with an air knife head matching the inner wall of the transmission shell.

[0013] In an optional solution: the high-pressure air source includes an air cannon, the air cannon is provided with an air inlet for connecting to an air compressor unit, the air cannon is provided with an air outlet for exhaust, and the air cannon is also provided with a solenoid valve and a barometer.

[0014] In the optional solution: the scraping mechanism includes a plurality of horizontal rotating shafts arranged at equal intervals, both ends of the horizontal rotating shafts are rotatably connected to the cleaning bearings inside the transmission shell, and a plurality of cleaning scrapers for scraping the coal on the surface of the aggregate plate are distributed in an array on the outer side of the horizontal rotating shaft, and the rotation radius of the cleaning scraper matches the upper end surface of the aggregate plate, and the horizontal rotating shaft is connected to a drive component for driving its rotation.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model can blow away the coal fragments on the inner wall of the transmission shell and push the coal fragments out by scraping, so as to avoid the accumulation of impurities affecting the normal operation of the transmission. During maintenance, the interior is clean and there is no need to deal with the internal dust separately, which saves emergency repair time, reduces the failure rate of continuous operation, and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the cross section of the utility model.

[0019] Figure 3 This is a schematic diagram of the air cannon structure of the present utility model.

[0020] Figure 4 This is a schematic diagram of the dust-proof arc plate structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the air knife flow channel structure of the utility model.

[0022] Figure 6 It is a side view of the blowing cutter head of the utility model.

[0023] Reference numerals: blowing cutter head 1, air outlet 11, solenoid valve 12, air inlet 14, air cannon 13, cutter head air source connector 15, air knife flow channel 16, air knife head 17;

[0024] Dustproof arc plate 2, protective skirt 21, countersunk bolts 22, fixing bolts 23, dustproof plate body 24, clip 25;

[0025] Air jet blowpipe 3, connecting flange 31;

[0026] Cleaning scraper 4, skirt belt 5, cleaning bearing 6, transmission shell 7, transmission belt group 8, collection plate 9. DETAILED DESCRIPTION

[0027] The following will be combined with the 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 creative work are within the scope of protection of the present invention.

[0028] like Figures 1-6 As shown, the embodiment of the present invention provides a weighing coal feeder blockage clearing device, including a dust-proof arc plate 2 arranged inside the transmission housing 7, the dust-proof arc plate 2 is located below the transmission belt group 8, the dust-proof arc plate 2 includes a horizontally arranged dust-proof plate body 24, and protective skirts 21 extending toward the inner wall of the transmission housing 7 are provided at both ends of the dust-proof plate body 24. The dust-proof plate body 24 is connected to the clamp 25 through a countersunk bolt 22, and the clamp 25 is sleeved on the bracket rod inside the transmission housing 7. The clamp 25 is provided with a fixing bolt 23 for locking the position of the clamp 25, so that the position of the dust-proof plate body 24 can be supported, and there is a flow gap between the protective skirt 21 and the inner wall of the transmission housing 7 to guide the coal scattered from the transmission belt group 8;

[0029] The transmission surface of the conveyor belt group 8 is symmetrically provided with skirt belts 5 that match the upper end surface of the dust-proof arc plate 2. The skirt belts 5 can prevent the coal from moving toward the middle position of the upper end of the dust-proof arc plate 2.

[0030] A horizontally arranged collecting plate 9 is provided below the dust-proof arc plate 2. A scraping mechanism for pushing the coal to one side is provided at the upper end of the collecting plate 9. A blowing mechanism for blowing away the coal on the side wall of the transmission shell 7 is also provided below the dust-proof arc plate 2. The coal is blown onto the collecting plate 9 by the blowing mechanism so that the scraping mechanism can scrape the coal smoothly.

[0031] The blowing mechanism includes an air jet blowpipe 3 arranged below the dust arc plate 2, the air inlet end of the air jet blowpipe 3 is provided with a pipe flange 31 for connecting to a high-pressure air source, the air jet blowpipe 3 is provided with a plurality of air jet cutter heads 1 along the transmission direction of the conveyor belt group 8, the air jet cutter head 1 includes a cutter head air source connector 15 connected to the air outlet end of the air jet blowpipe 3, a plurality of air knife flow channels 16 are provided at the lower end of the cutter head air source connector 15, and an air knife head 17 matching the inner wall of the transmission shell 7 is provided at the lower end of each air knife flow channel 16, so that the air flow enters the air jet cutter head 17 along the air jet blowpipe 3, and then ejects multiple air flows along the air knife flow channels 16, thereby removing the coal adhered to the inner wall of the transmission shell 7;

[0032] The air jet blowpipe 3 is fixedly arranged at the bottom of the dustproof arc plate 2, and the dustproof arc plate 2 can also be used to protect the air jet blowpipe 3;

[0033] The high-pressure air source includes an air cannon 13, which is provided with an air inlet 14 for connecting to an air compressor unit, an exhaust outlet 11, and a solenoid valve 12. The air cannon 13 is provided with air to the air cannon 13 through the air compressor unit to obtain sufficient air pressure.

[0034] The scraping mechanism includes a plurality of horizontal rotating shafts arranged at equal intervals, and both ends of the horizontal rotating shafts are rotatably connected to the cleaning bearings 6 inside the transmission shell 7. A plurality of cleaning scrapers 4 for scraping the coal on the surface of the aggregate plate 9 are distributed in an array on the outer side of the horizontal rotating shaft. The rotation radius of the cleaning scraper 4 matches the upper end surface of the aggregate plate 9. The horizontal rotating shaft is connected to a driving component for driving its rotation. The driving component here is a motor or a belt component or a sprocket component. In short, it can drive multiple horizontal rotating shafts to rotate. Driven by the driving component, the horizontal rotating shaft drives multiple cleaning scrapers 4 to rotate. When the multiple cleaning scrapers 4 rotate to the bottom, they will push the coal on the surface of the aggregate plate 9 to one side, thereby pushing the scattered coal to one side.

[0035] Working principle: Coal fragments fall along both sides of the conveyor belt group 8. Under the guidance of the dust-proof arc plate 2, the coal fragments slide along the inner wall of the conveyor shell 7. By delivering high-pressure gas to the inside of the jet blowpipe 3, the gas is ejected along the jet cutter head 1, thereby blowing away the waste on the inner wall of the conveyor shell 7. The blown-away waste slides along the conveyor shell 7 to the surface of the aggregate plate 9. Driven by the driving component, the horizontal rotating shaft drives multiple cleaning scrapers 4 to rotate. When the multiple cleaning scrapers 4 rotate to the bottom, they will push the coal on the surface of the aggregate plate 9 to one side, thereby pushing the scattered coal to one side.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for clearing blockage of a weighing coal feeder, comprising a dust arc plate (2) arranged inside a transmission housing (7), characterized in that: The dust-proof arc plate (2) is located below the conveyor belt group (8); a horizontally arranged material collecting plate (9) is provided below the dust-proof arc plate (2); a scraping mechanism for pushing the coal to one side is provided at the upper end of the material collecting plate (9); and a blowing mechanism for blowing away the coal on the side wall of the conveyor shell (7) is also provided below the dust-proof arc plate (2).

2. The weighing coal feeder blockage clearing device according to claim 1, characterized in that: The dustproof arc plate (2) includes a horizontally arranged dustproof plate body (24), the dustproof plate body (24) is connected to a clamp (25) via a countersunk bolt (22), the clamp (25) is sleeved on a bracket rod inside the transmission housing (7), and the clamp (25) is provided with a fixing bolt (23) for locking the position of the clamp (25).

3. The weighing coal feeder blockage clearing device according to claim 2, characterized in that: Both ends of the dustproof plate body (24) are provided with protective skirts (21) extending toward the inner wall of the transmission shell (7), and a flow gap exists between the transmission shell (7) and the inner wall of the protective skirt (21).

4. The weighing coal feeder blockage clearing device according to claim 2, characterized in that: Skirt belts (5) matching the upper end surfaces of the dustproof arc plates (2) are symmetrically provided on both sides of the transmission surface of the transmission belt group (8).

5. The weighing coal feeder blockage clearing device according to claim 1, characterized in that: The blowing mechanism comprises an air jet blowing pipe (3) arranged below the dust arc plate (2); an air inlet end of the air jet blowing pipe (3) is provided with a connecting flange (31) for connecting to a high-pressure air source; and a plurality of air jet cutting heads (1) are arranged on the air jet blowing pipe (3) along the transmission direction of the conveyor belt group (8).

6. The device for clearing blockage of a weighing coal feeder according to claim 5, characterized in that: The jet cutter head (1) comprises a cutter head air source connector (15) connected to the air outlet end of the jet blowpipe (3); a plurality of air knife flow channels (16) are provided at the lower end of the cutter head air source connector (15); and an air knife head (17) matching the inner wall of the transmission housing (7) is provided at the lower end of each air knife flow channel (16).

7. The device for clearing blockage of a weighing coal feeder according to claim 5, characterized in that: The high-pressure air source comprises an air cannon (13), the air cannon (13) is provided with an air inlet (14) for connecting to an air compressor unit, the air cannon (13) is provided with an air outlet (11) for exhaust, and the air cannon (13) is also provided with a solenoid valve (12) and a barometer.

8. The device for clearing blockage of a weighing coal feeder according to claim 1, characterized in that: The scraping mechanism includes a plurality of horizontal rotating shafts arranged at equal intervals, and both ends of the horizontal rotating shafts are rotatably connected to the cleaning bearings (6) inside the transmission shell (7). A plurality of cleaning scrapers (4) for scraping the coal on the surface of the aggregate plate (9) are distributed in an array outside the horizontal rotating shaft. The rotation radius of the cleaning scraper (4) matches the upper end surface of the aggregate plate (9), and the horizontal rotating shaft is connected to a driving component for driving its rotation.

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