CN209956998U - Micro-fog self-circulation dust removal device of coal conveying system of thermal power plant - Google Patents
Micro-fog self-circulation dust removal device of coal conveying system of thermal power plant Download PDFInfo
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- CN209956998U CN209956998U CN201920676370.5U CN201920676370U CN209956998U CN 209956998 U CN209956998 U CN 209956998U CN 201920676370 U CN201920676370 U CN 201920676370U CN 209956998 U CN209956998 U CN 209956998U
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Abstract
The utility model discloses a little fog self-loopa dust collector of coal conveying system of thermal power factory, including band conveyer, baffle box, blanking self-loopa mechanism and hinder dirt dust removal mechanism, the cross-section of baffle box is the big trapezoidal of end opening down, and the baffle box includes sealing connection's roof and two blocks of curb plates, leaves certain clearance between curb plate lower extreme and band conveyer's the belt, is connected with anti-overflow skirtboard through the holder on the outer wall of curb plate, and the lower extreme of anti-overflow skirtboard supports on the belt. The blanking self-circulation mechanism comprises a coal dropping pipe, a circulation pipe and a gas collecting cover, a draught fan is arranged on the circulation pipe, the dust preventing and removing mechanism comprises a first dust preventing curtain and a second dust preventing curtain, a first micro-mist spray head is arranged between the first dust preventing curtain and the coal dropping pipe and between the second dust preventing curtain and the gas collecting cover, and the first micro-mist spray head is fixed on a top plate in the guide chute. The utility model has the advantages of reasonable design, sealing performance is good, dust removal effect is good, has apparent economic value and social value.
Description
Technical Field
The utility model relates to a dust collecting equipment technical field, concretely relates to coal conveying system's of thermal power factory little fog self-loopa dust collector.
Background
The coal conveying system of the thermal power plant mainly undertakes the task of feeding coal to a raw coal bin of a boiler, a large amount of dust is generated in the process that raw coal is transported to a lower conveyor by a higher conveyor, the dust flies and is accumulated in a trestle, and serious fire hazard is buried in the trestle while the dust is harmful to the health of workers. At present, dust removing equipment used by a coal conveying system of a thermal power plant is mainly divided into a back-flushing bag dust remover, an electrostatic dust remover, a water impact type dust remover, a non-power dust remover and other forms, but the dust removing equipment has own defects and shortcomings according to different characteristics of the dust removing equipment: when the bag-type dust remover is used for removing dust, the fly ash contains moisture, so that dust is easy to adhere to a bag and is difficult to fall down to cause bag blockage, and the bag-type dust remover loses the function; when the electrostatic dust collector is used, the fly ash containing moisture is easy to adhere to a high-voltage insulator of the electrostatic dust collector, and the surface of the high-voltage insulator can be condensed, so that the high-voltage insulator is frequently broken down electrically and cannot work normally; the water impact type dust remover can not work normally due to the easy blockage of a sewage discharge pipeline, so that the dust removing effect is lost; the unpowered dust collector cannot achieve the dust removal effect when the pulverized coal is dry, and in conclusion, various dust collectors have the problems of inconvenience in use and poor dust removal effect. In addition, the existing coal conveying system generally guides coal into a guide chute of a lower conveyor through a coal drop pipe by a higher-level coal conveying device, and the problems of overlarge air pressure, poor sealing and dust external spraying exist in the guide chute. Therefore, it is objectively needed to develop a micro-mist self-circulation dust removal device of a coal conveying system of a thermal power plant, which has reasonable structural design, good sealing performance and good dust removal effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a little fog self-loopa dust collector of coal conveying system of thermal power factory that structural design is reasonable, sealing performance is good, dust removal effect is good.
The utility model aims at realizing like this, including band conveyer, baffle box, blanking self-loopa mechanism with hinder dirt dust removal mechanism, the cross-section of baffle box is the little trapezoidal of the big end opening of a bid, and the baffle box includes sealing connection's roof and two blocks of curb plates, leaves certain clearance between curb plate lower extreme and band conveyer's the belt, is connected with the anti-overflow skirtboard through the holder on the outer wall of curb plate, and the lower extreme of anti-overflow skirtboard supports on the belt.
The blanking self-circulation mechanism comprises a coal dropping pipe, a circulation pipe and a gas collecting hood, the coal dropping pipe and the gas collecting hood are arranged at intervals along the material conveying direction, the lower ends of the coal dropping pipe and the gas collecting hood are communicated with a top plate, the upper end of the circulation pipe is communicated with the side wall of the coal dropping pipe, the lower end of the circulation pipe is communicated with the upper end of the gas collecting hood, and a draught fan is arranged on the circulation pipe.
The dust-blocking and dust-removing mechanism comprises a first dust-blocking curtain and a second dust-blocking curtain, the first dust-blocking curtain is arranged in a guide chute at the rear side of the coal dropping pipe, the second dust-blocking curtain is arranged in a guide chute at the front side of the gas collecting hood, first micro-mist spray heads are arranged between the first dust-blocking curtain and the coal dropping pipe and between the second dust-blocking curtain and the gas collecting hood, and the first micro-mist spray heads are fixed on a top plate in the guide chute.
Furthermore, the top plate and the side plates are connected by flanges.
Furthermore, the number of blanking self-circulation mechanisms is 2, and the blanking self-circulation mechanisms are arranged at intervals along the conveying direction of the materials.
Furthermore, second micro-fog nozzles are arranged on the outlet end of the guide chute and the top plate at the tail end of the guide chute.
Furthermore, the number of the first micro-fog nozzles and the second micro-fog nozzles arranged on the longitudinal section of each guide chute is 2-3.
The anti-overflow apron plate of the utility model can effectively prevent the dust from overflowing by enhancing the sealing performance between the guide chute and the belt; secondly, a blanking self-circulation mechanism is arranged at the coal dropping pipe, so that a circulation channel is formed between the coal dropping pipe and the gas collecting cover, the airflow generated by the coal flow falling from the coal dropping pipe is collected by the gas collecting cover and then returns to the coal dropping pipe through the circulation pipe, the airflow in the guide chute can consume internal energy after continuous circulation, thereby achieving the effect of reducing the air pressure, and further ensuring that the dust in the guide chute does not overflow and fly outwards; in addition, dust generated when the coal flow falls is sealed in a space between the two dust blocking curtains, and the micro mist sprayed by the first micro mist spray head catches the dust and then falls onto a coal bed below the dust to be transported away, so that the concentration of the dust can be effectively reduced. The utility model has the advantages of reasonable design, sealing performance is good, dust removal effect is good, has apparent economic value and social value.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is a left side view structure diagram of the present invention;
in the figure: 1-top plate, 2-side plate, 3-belt, 4-clamp holder, 5-overflow prevention apron plate, 6-coal dropping pipe, 7-circulating pipe, 8-gas collecting hood, 9-induced draft fan, 10-first dust-proof curtain, 11-second dust-proof curtain, 12-first micro-mist spray head, 13-flange, 14-belt conveyer, 15-guide chute, 16-second micro-mist spray head, 17-motor and 18-high pressure plunger pump.
Detailed Description
The following further describes the present invention with reference to the attached drawings, but the present invention is not limited in any way, and any changes or improvements based on the teaching of the present invention all belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model discloses a band conveyer 14, baffle box 15, blanking self-loopa mechanism and dust removal mechanism hinder, the cross-section of baffle box 15 is the trapezoidal of a big end opening of suitable for reading, roof 1 and two blocks of curb plates 2 including sealing connection, leave certain clearance between 2 lower extremes of curb plate and band conveyer 14's the belt 3, be connected with anti-overflow skirtboard 5 through holder 4 on the outer wall of curb plate 2, the lower extreme of anti-overflow skirtboard 5 supports on belt 3, the lower extreme of anti-overflow skirtboard 5 is located the contact and slightly receives the state of power with belt 3, guarantee that the flying dust in the baffle box 15 is not excessive from here on can, in order to strengthen rigidity and the stability of baffle box 15, curb plate 2 can use the preparation of the manganese steel sheet of thickening, prevent to warp.
The blanking self-circulation mechanism comprises a coal dropping pipe 6, a circulation pipe 7 and a gas collecting hood 8, wherein the coal dropping pipe 6 and the gas collecting hood 8 are arranged at intervals along the material conveying direction, the lower ends of the coal dropping pipe 6 and the gas collecting hood 8 are communicated with a top plate 1, the upper end of the circulation pipe 7 is communicated with the side wall of the coal dropping pipe 6, the lower end of the circulation pipe is communicated with the upper end of the gas collecting hood 8, and a draught fan 9 is arranged on the circulation pipe 7.
The dust-resistant and dust-removing mechanism comprises a first dust-resistant curtain 10 and a second dust-resistant curtain 11, the first dust-resistant curtain 10 is arranged in a material guide groove 15 at the rear side of the coal dropping pipe 6, the second dust-resistant curtain 11 is arranged in a material guide groove 15 at the front side of the gas collecting hood 8, a first micro-mist spray head 12 is arranged between the first dust-resistant curtain 10 and the coal dropping pipe 6 and between the second dust-resistant curtain 11 and the gas collecting hood 8, and the first micro-mist spray head 12 is fixed on a top plate 1 in the material guide groove 15. The first micro-mist sprayer 12 can be a high-pressure micro-mist sprayer, the diameter of the sprayed mist particles is only 3-10 microns, 50 hundred million mist drops can be generated per second, and therefore it is guaranteed that dust particles smaller than 10 microns can be captured by the mist particles.
The anti-overflow apron board 5 of the utility model can effectively prevent the dust from overflowing by enhancing the sealing performance between the guide chute 15 and the belt 3; secondly, a blanking self-circulation mechanism is arranged at the coal dropping pipe 6, so that a circulation channel is formed between the coal dropping pipe 6 and the gas collecting hood 8, thus, the airflow generated by the coal flow dropped from the coal dropping pipe 6 is collected by the gas collecting hood 8 and then returns to the coal dropping pipe 6 through the circulation pipe 7, the airflow in the material guide groove 15 can consume internal energy after continuous circulation, thereby achieving the effect of reducing the air pressure, and further ensuring that the dust in the material guide groove 15 does not overflow and fly outwards; in addition, dust generated when the coal flow falls is sealed in a space between the first dust blocking curtain 10 and the second dust blocking curtain 11, and the micro mist sprayed by the first micro mist spray head 12 catches the dust and then falls onto a coal bed below to be transported away, so that the concentration of the dust can be effectively reduced. The utility model discloses simple structure, sealing performance are good, dust removal effect is good, have apparent economic value and social value.
The utility model discloses a dust removal effect is good, can prevent in the guiding gutter 15 coal ash to spill over and fly upward, effectively improves on-the-spot operation environment, ensures staff's physical and mental health, compares in the dust collecting equipment of other types, and maintenance work load is less, has reduced maintenance personal's maintenance work load, secondly, when carrying out the equipment maintenance, and maintenance cost is less, and annual operation maintenance cost is 6.8 ten thousand yuan when for example every blowback formula sack cleaner normally is put into operation, and the utility model discloses every annual operation maintenance cost is only 1.5 ten thousand yuan, in long-term past, but the operation maintenance cost of greatly reduced equipment has better economic nature.
For the convenience of installation and maintenance, the top plate 1 and the side plate 2 are connected by a flange 13.
The quantity of blanking self-loopa mechanism is 2, sets up along the direction of delivery interval of material, and a plurality of blanking self-loopa mechanisms can effectively reduce baffle box 15 internal gas pressure to improve the dust removal effect in the baffle box 15.
Be provided with the little fog shower nozzle 16 of second on the roof 1 at baffle box 15 both ends, set up the little fog shower nozzle 16 of second promptly at the head end and the tail end of baffle box 15, the head end of baffle box 15 is coal stream outlet end promptly, and the little fog shower nozzle 16 of second here catches a small amount of dust that flows along with the coal stream once more, and the little fog shower nozzle 16 of second of tail end can catch a small amount of dust that flows 15 afterbody of baffle box once more, and such setting can improve the utility model discloses holistic dust collection efficiency.
The number of the first micro-mist spray heads 12 and the second micro-mist spray heads 16 arranged on the longitudinal section of each guide chute 15 is 2-3, so that the spray of the first micro-mist spray heads 12 and the second micro-mist spray heads 16 can cover the space in the guide chute 15 to the maximum extent, and dust in the air flow can be removed to the maximum extent.
The first micro-fog spray head 12 and the second micro-fog spray head 16 in the utility model are driven by a driving device, the driving device can be composed of a motor 17 and a high-pressure plunger pump 18, when in use, water from a water tank is pressurized to form high-pressure atomized water, thus ensuring the atomization effect of the water; secondly, a flow guide plate can be arranged at a coal dropping point below the coal dropping pipe 6 to guide the direction of the coal dropping flow and ensure that the center of the coal dropping does not deviate; in addition, a group of deviation adjusting devices can be installed at the outlet of the material guide groove 15 to adjust the deviation of the belt 3, so that the problems of coal scattering and powder spraying caused by the deviation of the belt 3 are avoided.
Claims (5)
1. The utility model provides a little fog self-loopa dust collector of coal conveying system of thermal power factory which characterized in that: the automatic dust collection device comprises a belt conveyor (14), a guide chute (15), a blanking self-circulation mechanism and a dust prevention and removal mechanism, wherein the section of the guide chute (15) is a trapezoid with a large upper opening and a small lower opening, and comprises a top plate (1) and two side plates (2) which are hermetically connected, a certain gap is reserved between the lower ends of the side plates (2) and a belt (3) of the belt conveyor (14), an anti-overflow apron plate (5) is connected to the outer wall of each side plate (2) through a clamp holder (4), and the lower end of the anti-overflow apron plate (5) is abutted to the belt (3);
the blanking self-circulation mechanism comprises a coal dropping pipe (6), a circulation pipe (7) and a gas collecting hood (8), the coal dropping pipe (6) and the gas collecting hood (8) are arranged at intervals along the material conveying direction, the lower ends of the coal dropping pipe (6) and the gas collecting hood (8) are communicated with the top plate (1), the upper end of the circulation pipe (7) is communicated with the side wall of the coal dropping pipe (6), the lower end of the circulation pipe is communicated with the upper end of the gas collecting hood (8), and a draught fan (9) is arranged on the circulation pipe (7);
hinder dirt dust removal mechanism and include first hinder dirt curtain (10) and second and hinder dirt curtain (11), first hinder dirt curtain (10) and set up in baffle box (15) of coal breakage pipe (6) rear side, and second hinders dirt curtain (11) and sets up in baffle box (15) of gas collecting channel (8) front side, be provided with first little fog shower nozzle (12) between first hinder dirt curtain (10) and coal breakage pipe (6), second hinder between dirt curtain (11) and the gas collecting channel (8), first little fog shower nozzle (12) are fixed on roof (1) in baffle box (15).
2. The fine fog self-circulation dust removal device of the coal conveying system of the thermal power plant as claimed in claim 1, wherein the top plate (1) and the side plate (2) are connected by a flange (13).
3. The fine mist self-circulation dust removal device of the coal conveying system of the thermal power plant as claimed in claim 1, wherein the number of the blanking self-circulation mechanisms is 2, and the blanking self-circulation mechanisms are arranged at intervals along the conveying direction of the materials.
4. The fine mist self-circulation dust removing device of the coal conveying system of the thermal power plant as claimed in claim 1, wherein the top plates (1) at both ends of the material guide chute (15) are provided with second fine mist nozzles (16).
5. The fine mist self-circulation dust removing device of the coal conveying system of the thermal power plant as claimed in claim 4, wherein the number of the first fine mist spray heads (12) and the second fine mist spray heads (16) arranged on the longitudinal section of each guide chute (15) is 2-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920676370.5U CN209956998U (en) | 2019-05-13 | 2019-05-13 | Micro-fog self-circulation dust removal device of coal conveying system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920676370.5U CN209956998U (en) | 2019-05-13 | 2019-05-13 | Micro-fog self-circulation dust removal device of coal conveying system of thermal power plant |
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| CN209956998U true CN209956998U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920676370.5U Active CN209956998U (en) | 2019-05-13 | 2019-05-13 | Micro-fog self-circulation dust removal device of coal conveying system of thermal power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744618A (en) * | 2021-01-15 | 2021-05-04 | 国能信控互联技术有限公司 | Thermal power plant coal conveying belt dust fall leakage prevention intelligent system and method |
| CN114056969A (en) * | 2021-11-08 | 2022-02-18 | 北京华能新锐控制技术有限公司 | Closed dust suppression mechanism for coal conveying belt |
-
2019
- 2019-05-13 CN CN201920676370.5U patent/CN209956998U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744618A (en) * | 2021-01-15 | 2021-05-04 | 国能信控互联技术有限公司 | Thermal power plant coal conveying belt dust fall leakage prevention intelligent system and method |
| CN114056969A (en) * | 2021-11-08 | 2022-02-18 | 北京华能新锐控制技术有限公司 | Closed dust suppression mechanism for coal conveying belt |
| CN114056969B (en) * | 2021-11-08 | 2023-11-07 | 北京华能新锐控制技术有限公司 | Closed dust suppression mechanism for coal conveying belt |
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