Belt coal falling transfer point negative pressure injection spraying dust fall and dust-containing airflow dust control device

Abstract

The invention belongs to the technical field of coal mine dust control, and relates to a belt coal falling transfer point negative pressure injection spraying dust falling and dust-containing airflow dust control device which is arranged above a coal conveying belt of a belt bracket, is connected with the bottom of a coal falling opening and comprises coal baffles on the two sides of the coal conveying belt and an arch-shaped sealing cover above the coal baffles. The negative pressure injection spraying device and the dust-containing airflow control air knife are mounted on the arched sealing cover. The designed length of the coal baffle is larger than that of the arch-shaped sealing cover, the coal baffle covers two sides of the bottom outlet of the coal falling opening, and dust is effectively prevented from overflowing. In the working process, the negative pressure injection spraying device sucks air through the negative pressure effect and mixes the air with water, and strong spraying dust falling is formed; meanwhile, the dust-containing airflow controls the air knife to form an air curtain, so that dust diffusion is further reduced. The sealing rubber is arranged at the end of the dust removal channel, coal flow transportation is not hindered, and dust can be effectively prevented from overflowing. Through multiple mechanisms, the dust concentration of the working environment is effectively reduced, and an efficient dust falling solution is provided for coal mines and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust control, and relates to a negative pressure injection spray dust reduction and dust-containing airflow dust control device at a belt coal dropping transfer point. Background Art

[0002] As an important energy resource in the world, the dust problem generated during the mining and transportation of coal has always been the focus of the industry. Dust not only pollutes the environment, but also seriously affects the health of operators and increases the cost of equipment operation and maintenance. Therefore, the development of efficient and economical dust control systems is of great significance to improving the working environment and increasing production efficiency.

[0003] In the process of coal transportation, the transfer point where the coal is dropped by the belt is one of the main links that generate dust pollution. Traditional dust removal methods often have limited effects and cannot effectively control the dust generated at the transfer point, which leads to a deterioration of the working environment, seriously affects the health of the operators, and also pollutes the environment.

[0004] In the existing dust removal technology, although there are some spray dust reduction and airflow control devices, most of these devices have problems such as complex structure, inconvenient installation, and unsatisfactory dust removal effect. Especially in the process of conveyor belt coal transportation, due to the impact of coal flow and the movement of the belt, dust is very easy to escape and difficult to effectively capture and control. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a negative pressure injection spray dust reduction and dust-containing airflow dust control device at a belt coal transfer point to solve the existing problems.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a negative pressure injection spray dust reduction and dust-containing airflow dust control device at the belt coal transfer point is arranged above the coal transport belt of the belt bracket and connected to the bottom of the coal drop port, including coal baffles arranged on both sides of the coal transport belt, and an arched sealing cover arranged above the coal baffles, the arched sealing cover and the coal baffles are connected to form a closed dust removal channel; the rear section of the dust removal channel is also equipped with a negative pressure injection spray device and a dust-containing airflow control wind knife in sequence on the arched sealing cover.

[0007] Optionally, the length of the coal blocking plate is greater than the length of the arched sealing cover, and extends along the coal drop opening and completely covers both sides of the bottom outlet of the coal drop opening.

[0008] Optionally, the coal baffle plate is fixed on the belt bracket by a plurality of coal baffle plate fixing frames.

[0009] Optionally, the negative pressure injection spray device includes a spray rack fixed on the inner side of the top of the arched sealing cover by a plurality of fixing blocks, and a plurality of double-bell-mouth type injectors and nozzles connected to the spray rack; one end of the double-bell-mouth type injector faces the coal drop port, and the other end faces the coal conveyor belt, and the nozzle is installed in the bell-mouth type injector facing the coal conveyor belt.

[0010] Optionally, a water inlet is provided on the spray rack, and the water inlet is provided through the arched sealing cover.

[0011] Optionally, the dust-laden airflow control wind knife includes a wind knife device arranged on the inner side of the top of the arched sealing cover, the wind knife device is provided with an air inlet, and the air inlet passes through the arched sealing cover; a slit is opened at the bottom of the wind knife device, and the air entering through the air inlet forms a wind curtain at the slit to block the dust-laden airflow.

[0012] Optionally, a sealing rubber is provided at the end of the dust removal passage. The sealing rubber is processed into a door curtain structure by vertically cutting strips, so as to prevent dust from overflowing without hindering the transportation of coal flow.

[0013] The beneficial effects of the present invention are as follows: the overall beneficial effects of the negative pressure injection spray dust reduction and dust-containing airflow dust control device at the belt coal transfer point of the present invention are mainly reflected in significantly improving the dust reduction effect, optimizing the working environment and enhancing the practicality of the equipment; the device effectively reduces the dust concentration in the working environment through ingenious design, and provides an efficient and practical dust reduction solution for dusty working environments such as coal mines. At the same time, its structural design and material selection also ensure the stability and durability of the equipment, facilitate maintenance and operation, and further improve the overall practicality of the equipment.

[0014] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the interior of the arched closed cover of the present invention;

[0018] Figure 3 A partial perspective view of the arched enclosure of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the negative pressure injection spray device of the present invention.

[0020] Figure numerals: belt bracket 1, coal conveyor belt 2, coal drop port 3, arched sealing cover 4, negative pressure injection spray device 5, water inlet 51, spray rack 52, fixed block 53, double trumpet-shaped injector 54, nozzle 55, dust-laden airflow control wind knife 6, air inlet 61, wind knife device 62, sealing rubber 7, coal baffle plate 8, coal baffle plate fixing frame 9. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] See also Figure 1 to Figure 4, which is a negative pressure injection spray dust reduction and dust-containing airflow dust control device at the belt coal transfer point, is arranged above the coal conveying belt 2 of the belt bracket 1 and connected to the bottom of the coal dropping port 3, including coal blocking plates 8 arranged on both sides of the coal conveying belt 2, and an arched sealing cover 4 arranged above the coal blocking plates 8, and the arched sealing cover 4 is connected with the coal blocking plates 8 to form a closed dust removal channel; the rear section of the dust removal channel is also equipped with a negative pressure injection spray device 5 and a dust-containing airflow control wind knife 6 on the arched sealing cover 4 in sequence, the length of the coal blocking plate 8 is greater than the length of the arched sealing cover 4, extends along the direction of the coal dropping port 3 and completely covers both sides of the bottom outlet of the coal dropping port 3, the coal blocking plate 8 is fixed to the belt bracket 1 by a plurality of coal blocking plate fixing frames 9, the negative pressure injection spray device 5 includes a spray rack 52 fixedly arranged on the inner side of the top of the arched sealing cover 4 by a plurality of fixing blocks 53, and a spray rack 52 connected to the spray rack A plurality of double-bell-mouth ejectors 54 and nozzles 55 are connected and arranged in communication with each other; one end of the double-bell-mouth ejector 54 faces the coal drop port 3, and the other end faces the coal conveying belt 2; the nozzle 55 is installed in the bell-mouth shape facing the coal conveying belt 2; a water inlet 51 is arranged on the spray rack 52, and the water inlet 51 passes through the arched sealing cover 4; a dust-containing airflow control wind knife 6 includes a wind knife device 62 arranged on the inner side of the top of the arched sealing cover 4, and an air inlet 61 is arranged on the wind knife device 62, and the air inlet 61 passes through the arched sealing cover 4; a slit is opened at the bottom of the wind knife device 62, and the air entering through the air inlet 61 forms a wind curtain at the slit to block the dust-containing airflow; a sealing rubber 7 is also arranged at the end of the dust removal channel, and the sealing rubber 7 is processed into a door curtain structure by vertically cutting strips to prevent dust from overflowing without hindering the transportation of coal flow.

[0025] When the present invention is working, it includes the following steps: during the coal transportation process, when the coal blocks fall from the coal drop port 3, a large amount of dust will be generated. The dust is effectively controlled in the closed dust removal channel composed of the coal baffle plate 8 and the arched sealing cover 4. The design length of the coal baffle plate 8 is greater than the arched sealing cover 4, ensuring that both sides of the bottom outlet of the coal drop port 3 are completely covered, thereby preventing dust from overflowing; then, the negative pressure injection spray device 5 starts to work, and water enters through the water inlet 51 on the spray rack 52, and is distributed to a plurality of double-bell-shaped injectors 54 and nozzles 55 through the spray rack 52. One end of the double-bell-shaped injector 54 faces the coal drop port 3, and uses the negative pressure effect to inhale air and mix it with water to form a strong spray effect; the other end faces the coal conveying belt 2, and the nozzle 55 sprays the mixed water mist to effectively moisten and settle the dust; the induced airflow forms a negative pressure through the double-bell-shaped injector 54, and the dust is inhaled from the bell mouth on one side, and mixed with the spray of the bell mouth with the nozzle 55 on the other side to reduce dust. At the same time, the dusty airflow control wind knife 6 also starts to work; air enters through the air inlet 61 on the wind knife device 62, and forms a wind curtain at the slit at the bottom of the wind knife device 62, which blocks the dusty airflow and further reduces the diffusion of dust; finally, the coal flow that has been treated with dust reduction passes through the sealing rubber 7 at the end of the dust removal channel. The sealing rubber 7 is processed into a door curtain structure by vertically cutting strips, which does not hinder the normal transportation of the coal flow and can effectively prevent the overflow of dust.

[0026] In summary, the device of the present invention effectively reduces the dust concentration in the working environment through multiple mechanisms such as closed dust removal channels, negative pressure spray dust reduction and dust-containing airflow control wind knife 6, providing an efficient dust reduction solution for dusty working environments such as coal mines.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. The negative pressure injection spray dust reduction and dust-containing airflow dust control device at the belt coal transfer point is installed above the coal conveying belt of the belt bracket and connected to the bottom of the coal drop port. Features: It includes coal baffles arranged on both sides of the coal conveyor belt, and an arched sealing cover arranged above the coal baffles. The arched sealing cover is connected with the coal baffles to form a closed dust removal channel. A negative pressure injection spray device and a dust-containing airflow control wind knife are also installed in sequence on the arched sealing cover at the rear section of the dust removal channel.

2. According to the negative pressure injection spray dust reduction and dust-containing airflow dust control device at the belt coal transfer point according to claim 1, Features: The length of the coal blocking plate is greater than that of the arched sealing cover, and it extends along the direction of the coal drop opening and completely covers both sides of the bottom outlet of the coal drop opening.

3. The dust control device for negative pressure spraying and dust-laden airflow at the belt coal transfer point according to claim 2, Features: The coal baffle plate is fixed on the belt bracket through a plurality of coal baffle plate fixing frames.

4. The dust control device for negative pressure spraying and dust-containing airflow at the belt coal transfer point according to claim 1, Features: The negative pressure injection spray device includes a spray rack fixed on the inner side of the top of the arched sealing cover by a plurality of fixing blocks, and a plurality of double-bell-mouth type injectors and nozzles connected to the spray rack; one end of the double-bell-mouth type injector faces the coal drop port, and the other end faces the coal conveyor belt, and the nozzle is installed in the bell-mouth type injector facing the coal conveyor belt.

5. The dust control device for negative pressure spraying and dust-laden airflow at the belt coal transfer point according to claim 4, Features: The spray rack is provided with a water inlet, which passes through the arched sealing cover.

6. The negative pressure spray dust reduction and dust-containing airflow dust control device for the belt coal transfer point according to claim 1, Features: The dust-laden airflow control wind knife comprises a wind knife device arranged on the inner side of the top of the arched sealing cover, the wind knife device is provided with an air inlet, and the air inlet passes through the arched sealing cover; a slit is opened at the bottom of the wind knife device, and the air entering through the air inlet forms a wind curtain at the slit to block the dust-laden airflow.

7. The negative pressure spray dust reduction and dust-containing airflow dust control device for the belt coal transfer point according to claim 1, Features: A sealing rubber is also provided at the end of the dust removal channel. The sealing rubber is processed into a door curtain structure by vertically cutting strips, which prevents dust from overflowing without hindering the transportation of coal flow.

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