Dust suppression system for coal loading of coal bunker

Abstract

The utility model relates to the technical field of boiler equipment, and provides a dust suppression system for coal loading of coal bunkers, which comprises a plurality of coal bunkers and bag-type dust removers arranged above the coal bunkers, a dust suction pipe is arranged between the coal bunker and the bag-type dust collector, one end of the dust suction pipe is connected to the coal bunker, and the other end of the dust suction pipe is connected into a box chamber of the bag-type dust collector. The dust suction pipes are communicated through connecting pipes; and a coal falling pipe for conveying pulverized coal collected by the bag-type dust collector into the coal bunker is arranged at the bottom of the bag-type dust collector. According to the dust suppression system for coal feeding of the coal bunkers, the dust collection pipes from the coal bunkers to the bag-type dust removers are connected together, the pneumatic baffle doors of the dust collection pipes, the pneumatic flashboard doors of the coal falling openings of the coal bunkers, the coal plough and the two pneumatic doors are additionally arranged, existing equipment pipelines are utilized, the bag-type dust removers are fully utilized, and the dust suppression efficiency is improved. The negative pressure dust suppression effect of the coal bunker is improved, the dust suppression efficiency of the coal bunker is improved, flying dust of the coal bunker during coal feeding is effectively reduced, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a dust suppression system for coal loading in a coal bunker. Background Art

[0002] At present, when domestic coal-fired boilers are loaded with coal, in order to control dust pollution during the coal bunker loading process, the industry has adopted some dust suppression measures, such as installing bag dust collectors.

[0003] Traditional bag dust collectors are often configured separately for each coal bunker. Each coal bunker dust collector works independently, resulting in serious dust in the coal bunker. The coal loading system has little correlation with the dust suppression system, and the dust suppression effect cannot be effectively achieved, resulting in serious coal dust pollution in the coal conveyor belt layer, which not only pollutes the environment, but also damages the health of on-site personnel.

[0004] Therefore, developing a new type of coal dust suppression system for coal bunkers that can make full use of existing equipment, improve dust suppression efficiency, and enhance dust suppression effects has become an urgent problem to be solved. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a dust suppression system for loading coal into a coal bunker, including a dust suction pipe and a connecting pipe thereon, a first pneumatic baffle door, a second pneumatic baffle door, a coal drop pipe and an air lock thereon, a bag dust collector, a coal plow, and the dust suction pipe is used to convey the coal powder airflow. The connecting pipe connects the dust suction pipes together. After the dust is removed by the bag dust collectors at the same time, the coal powder falls into the coal bunker through the coal drop pipe. When loading coal, the coal plow and the first pneumatic baffle door and the second pneumatic baffle door are controlled by a unified program.

[0006] The dust suction pipe is provided with a first pneumatic baffle door, and the coal drop pipe is provided with an air locker, which is responsible for stabilizing the airflow and preventing the air in the coal bin from flowing to the bag dust collector, so as to facilitate the coal powder to fall back from the bag dust collector into the coal bin.

[0007] The connecting pipe connects each coal bunker with each bag dust collector. When coal is loaded, all bag dust collectors work at the same time to increase the negative pressure in the coal bunker and reduce dust.

[0008] The coal bunker is provided with a coal bunker coal drop opening, the coal bunker coal drop opening is equipped with a second pneumatic baffle door, and a coal conveyor belt is provided between each coal bunker coal drop opening. The coal conveyor belt is responsible for conveying raw coal, and the coal plow is responsible for guiding the raw coal on the belt to the coal drop opening and falling into the coal bunker.

[0009] The second pneumatic damper door can be opened and closed remotely. When closed, the coal bunker is completely closed, and only the dust suction pipe is connected to the coal drop pipe and the bag dust collector. When loading coal into a coal bunker, the coal plow of the coal bunker falls, the second pneumatic damper door is opened, the coal plows of the other coal bunkers remain in the lifted state, and the other second pneumatic damper doors remain in the closed state. The first pneumatic damper door on the dust suction pipe of the coal bunker is opened, and the first pneumatic damper doors on the other dust suction pipes remain in the closed state.

[0010] When replacing the upper coal bunker, the coal plow corresponding to the upper coal bunker needs to be lowered, the second pneumatic baffle door is opened, the first pneumatic baffle door on the dust suction pipe is opened, the coal plow corresponding to the upper coal bunker is lifted, the second pneumatic baffle door is closed, and the first pneumatic baffle door on the dust suction pipe is closed.

[0011] The beneficial effects achieved by the utility model are:

[0012] The utility model relates to a dust suppression system for loading coal into a coal bunker, which connects the dust suction pipes from each coal bunker to the bag dust collector, adds pneumatic baffle doors to each dust suction pipe, adds pneumatic plug-in doors to the coal dropping openings of each coal bunker, adds a coal plow and the two pneumatic doors, utilizes existing equipment and pipelines, fully utilizes each bag dust collector, increases the negative pressure dust suppression effect of the coal bunker, improves the dust suppression efficiency of the coal bunker, effectively reduces the dust in the coal bunker when loading coal, and reduces environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall system diagram of the utility model;

[0014] Figure 2 This is a diagram of the dust suppression system for loading coal into a coal bunker according to the utility model;

[0015] Figure 3 The utility model is a coal loading system diagram for loading coal into a coal bunker.

[0016] Numbers in the figure:

[0017] 1. Bag dust collector; 2. Dust suction pipe; 3. Air lock; 4. Coal drop pipe; 5. First pneumatic damper door; 6. Coal bunker; 7. Connecting pipe; 8. Coal conveyor belt; 9. Coal drop port of coal bunker; 10. Second pneumatic damper door; 11. Coal plow. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the utility model is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0019] Reference Figure 1-Figure 3 The utility model discloses a dust suppression system for loading coal into a coal bunker, comprising a dust suction pipe 2 and a connecting pipe 7 connected thereto, wherein one end of the dust suction pipe 2 is connected to the coal bunker 6, and the other end is connected to the box chamber of the bag-type dust collector 1, the connecting pipe 7 connects the dust suction pipes 2 together, and a coal dropping pipe 4 is provided at the bottom of the bag-type dust collector 1, the coal dropping pipe 4 is responsible for conveying the coal powder collected by the bag-type dust collector 1 into the coal bunker 6; a first pneumatic baffle door 5 is provided on the dust suction pipe 2, and an air lock 3 is provided on the coal dropping pipe 4, the air lock 3 is responsible for stabilizing the airflow, preventing the air from the coal bunker 6 from flowing into the bag-type dust collector 1, and facilitating the coal powder to fall back into the coal bunker 6 from the bag-type dust collector 1; the connecting pipe 7 connects the coal bunkers 6 with the bag-type dust collectors 1 together, and when loading coal, all the bag-type dust collectors 1 work at the same time, increasing the negative pressure in the coal bunker 6 and reducing dust.

[0020] The utility model is also provided with a coal conveyor belt 8 responsible for conveying raw coal, and a coal plow 11 responsible for guiding the raw coal on the belt to a coal drop port 9 and dropping it into a coal bunker 6; a second pneumatic baffle door 10 at the coal drop port can be remotely opened and closed, and when closed, the coal bunker 6 is completely closed, and only the dust suction pipe 2 is connected to the coal drop pipe 4 and the bag dust collector 1.

[0021] The program control logic including the coal plow 11, the first pneumatic damper door 5 of the dust suction pipe, and the second pneumatic damper door 10 of the coal drop port of the coal bunker is as follows: when loading coal into a coal bunker 6, the coal plow 11 drops down, the second pneumatic damper door 10 of the coal drop port opens, the coal plows 11 of the other coal bunkers remain in the lifted state, the second pneumatic damper doors 10 of the other coal drop ports remain in the closed state, the first pneumatic damper door 5 on the dust suction pipe of the coal bunker opens, and the first pneumatic damper doors 5 on the other dust suction pipes remain in the closed state.

[0022] When replacing the upper coal bunker, the coal plow 11 corresponding to the upper coal bunker needs to be lowered, the second pneumatic baffle door 10 of the coal drop port is opened, and the first pneumatic baffle door 5 on the dust suction pipe is opened. After the coal is loaded, the coal plow 11 corresponding to the coal bunker is lifted, the second pneumatic baffle door 10 of the coal drop port is closed, and the first pneumatic baffle door 5 on the dust suction pipe is closed.

[0023] When the utility model is working, coal is loaded into one of the coal bunkers 6, its coal plow 11 falls down, and the second pneumatic damper door 10 of the coal drop port is opened, the coal plows 11 of the other coal bunkers remain in a lifted state, the second pneumatic damper doors 10 of the other coal drop ports remain in a closed state, the first pneumatic damper door 5 on the dust suction pipe of the coal bunker is opened, and the first pneumatic damper doors 5 on the other dust suction pipes remain in a closed state; when the coal bunker for loading coal is replaced, the coal plow 11 corresponding to the coal bunker for loading coal needs to be dropped, the second pneumatic damper door 10 of the coal drop port is opened, and the first pneumatic damper door 5 on the dust suction pipe is opened, and after loading coal, the coal plow 11 corresponding to the coal bunker is lifted up, the second pneumatic damper door 10 of the coal drop port is closed, and the first pneumatic damper door 5 on the dust suction pipe is closed.

[0024] The working process of the dust suppression system is as follows: after the connecting pipe 7 connects the dust suction pipes 2 together, the suction force generated by all the bag dust collectors 1 can be used to increase the negative pressure of a single coal bunker 6, and the coal bunker 6 can be closed by the pneumatic baffle door 10 to change the air flow channel of the wind and powder. In addition, by relying on the program logic control between the coal plow 11 and the first pneumatic baffle door 5 and the second pneumatic baffle door 10, the operation process of the coal loading and dust suppression system can be simplified, the dust in the coal bunker during coal loading is effectively reduced, environmental pollution is reduced, and the degree of automation of the coal loading system and the dust suppression system is improved.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust suppression system for coal loading in coal bunker, It is characterized in that include: A plurality of coal bunkers (6) and a bag filter (1) installed above the coal bunkers (6); A dust suction pipe (2) is provided between the coal bunker (6) and the bag dust collector (1), one end of the dust suction pipe (2) is connected to the coal bunker (6), and the other end is connected to the chamber of the bag dust collector (1); The dust suction pipes (2) are connected to each other via a connecting pipe (7); A coal drop pipe (4) for conveying coal powder collected by the bag dust collector (1) to a coal bunker (6) is provided at the bottom of the bag dust collector (1).

2. The dust suppression system for coal loading in coal bunker according to claim 1, Features The dust suction pipe (2) is provided with a first pneumatic baffle door (5).

3. The dust suppression system for coal loading in coal bunker according to claim 1, Features: The coal drop pipe (4) is provided with an air lock (3) for stabilizing the air flow and preventing the air in the coal bin (6) from flowing to the bag filter (1).

4. The dust suppression system for coal loading in coal bunker according to claim 1, Features: The coal bunker (6) is provided with a coal bunker coal dropping opening (9), and the coal bunker coal dropping opening (9) is installed with a second pneumatic damper door (10).

5. The dust suppression system for coal loading in coal bunker according to claim 4, Features: A coal conveying belt (8) is arranged between the coal dropping openings (9) of each coal bunker.

6. The dust suppression system for coal loading in coal bunker according to claim 5, Features: A coal plow (11) is provided on the coal conveying belt (8).

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