Scraper conveyer with dust removal function

Abstract

The invention relates to a scraper conveyer with a dust removal function, and belongs to the technical field of coal mine dust treatment. Comprising a base, a chute baffle, a machine head transmission part, a machine tail transmission part, a scraper chain, a machine head pushing part and a machine tail pushing part, a hollow interlayer is arranged on the chute baffle, a linear dust remover is arranged in the hollow interlayer, an entrainment effect is formed to suck dust generated by coal cutting of a roller of the coal mining machine, and the dust is sucked into the dust remover to be purified. And meanwhile, a barrier is formed between the coal mining machine and the pedestrian side in manners of forming an air curtain, a water curtain, a fog gun (mixing air and water) and the like at the air outlet of the dust remover, so that untreated dust is prevented from diffusing towards the pedestrian side secondarily and is guided to diffuse towards the coal wall side (far away from the pedestrian side). And dust which is not sucked and purified can be settled in time in water-containing forms such as a water curtain and a fog gun. The device is simple in structure and convenient to mount, solves the problem of serious dust pollution of the fully-mechanized coal mining surface, and realizes source treatment of dust while preventing dust diffusion.

Description

Technical Field

[0001] This invention belongs to the field of coal mine dust control technology and relates to a scraper conveyor with dust removal function. Background Technology

[0002] High concentrations of dust can easily cause coal dust explosions and participate in gas explosions, affect visibility in workplaces, and induce related safety accidents. Therefore, dust control in coal mines is crucial for protecting miners' health and ensuring safe production in mines.

[0003] The fully mechanized mining face is the most polluted area in underground coal mines. Its dust primarily originates from dust generated by the coal cutting drum of the coal shearing machine, the lowering and shifting of hydraulic supports, and roof collapses. Dust generated by the coal cutting machine accounts for approximately 75% of the pollution. The main causes of this pollution are: the coal cutting drum continuously crushes the coal body, generating dust; the airflow in the intake roadway encounters the coal cutting machine body at the working face, and due to the reduced cross-sectional area, the wind speed on the windward side of the machine body increases sharply. Part of the obstructed airflow diffuses downwind along the machine body, and part diffuses over the chute baffles towards the personnel side. Due to the high wind speed, a large amount of dust generated by the upper drum coal cutting is carried, polluting the working environment on the personnel side and increasing the safety hazard of coal dust explosions.

[0004] Based on the above, there is an urgent need to design a new solution to address dust pollution-related issues. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a scraper conveyor with dust removal function to solve the problem of serious dust pollution in fully mechanized mining face, which pollutes the working environment on the pedestrian side and increases the safety hazard of coal dust explosion.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A scraper conveyor with dust removal function includes a chute baffle vertically arranged on the side of the base. The chute baffle is provided with a hollow interlayer, and a dust collector is vertically arranged in the hollow interlayer. The suction port of the dust collector is located at the bottom and the exhaust port is located at the top. The dust generated by the coal cutting machine is purified and discharged by using the suction effect.

[0007] Optionally, it also includes a head drive unit and a tail drive unit disposed at both ends of the base along the axial direction, and a scraper chain disposed along the base along the axial direction; the two ends of the scraper chain are respectively provided with a head push unit and a tail push unit.

[0008] Optionally, the dust collector is in a straight line shape, and includes an air inlet, a dust removal section, a power section and an air outlet in sequence, wherein the dust removal section and the power section are located in the hollow interlayer.

[0009] Optionally, the power section is equipped with a power unit, and the dust removal section is equipped with a cyclone dust collector, wherein the power unit provides power for the operation of the cyclone dust collector.

[0010] Optionally, the power section also includes nozzles to wash the inhaled dust-laden gas; a dehydration section is also provided between the air outlet and the dust removal section, and a dehydration device is provided in the dehydration section to separate the washed gas from the water, and the separated clean gas is discharged from the air outlet; the dehydration device is driven by the power device.

[0011] Optionally, the dewatering device includes swirl vanes and baffles.

[0012] Optionally, it may also include a powertrain that transmits and distributes power to the power unit.

[0013] Optionally, the power unit can be an electric device, a hydraulic device, or an electro-hydraulic device.

[0014] The beneficial effects of this invention are as follows: This invention proposes a scraper conveyor with dust removal function. It primarily involves arranging a hollow interlayer on the outside of the chute baffle, and then installing an integrated dust removal device (electric dust collector, hydraulic dust collector, etc.) within the hollow interlayer. This device uses a suction effect to draw in dust generated by the coal cutting drum of the coal mining machine, especially dust that tends to diffuse towards the walkway due to obstruction by the machine body. The dust is then drawn into the dust collector for purification. Simultaneously, the integrated device's outlet forms a barrier between the coal mining machine and the walkway side through air curtains, water curtains, and mist cannons (a combination of air and water), preventing untreated dust from diffusing further towards the walkway and guiding it towards the coal face (away from the walkway side). If water curtains or mist cannons are used, unpurified dust can also be promptly settled, and dust on the coal face side can also be settled.

[0015] The scraper conveyor of this invention can prevent dust from spreading while achieving dust source control. The cyclone dust collector is mainly used to filter dust. The air at the outlet is obliquely sprayed towards the coal wall to form an air curtain, which plays the role of entraining and blocking the dust that escapes from the coal mining machine and spreads to the pedestrian side. In addition, by setting a spray at the air outlet, it achieves the effect of air-driven spraying, and the spray can directly suppress dust.

[0016] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 For scraper conveyors that are not equipped with dust collectors; Figure 2 Scraper conveyors equipped with dust collectors; Figure 3 This is a front view of a scraper conveyor. Figure 4 This is a top view of a scraper conveyor. Figure 5 This is a schematic cross-sectional view of a scraper conveyor. Figure 6 This is a front view of the dust collector; Figure 7 This is an isometric drawing of the dust collector. Figure 8 This is a schematic diagram of the internal components of a dust collector.

[0018] Figure label: 1. Chute baffle, 2. Air inlet, 3. Air outlet, 4. Power section, 5. Nozzle, 6. Dust removal section, 7. Dehydration section, 8. Power assembly, 9. Base, 10. Hollow sandwich layer, 11. Head drive unit, 12. Tail drive unit, 13. Scraper chain, 14. Head push unit, 15. Tail push unit. Detailed Implementation

[0019] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed 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 are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0021] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] Please see Figures 2-8 This is a scraper conveyor with dust removal function, including a chute baffle 1 vertically arranged on the side of the base 9. A hollow interlayer 10 is provided on the chute baffle 1, and a dust collector is vertically arranged within the hollow interlayer 10. The dust collector's suction port 2 is located at the lower part, and the exhaust port 3 is located at the upper part. It utilizes the suction effect to purify and discharge the dust generated by the coal cutting machine. The exhaust port 3 is equipped with a spray device to suppress dust. The scraper conveyor also includes a head drive unit 11 and a tail drive unit 12 arranged at both axial ends of the base 9, and a scraper chain 13 arranged along the axial direction of the base 9. The scraper chain 13 has a head push unit 14 and a tail push unit 15 at both ends.

[0023] The head drive unit 11 is the "heart" of the entire equipment, providing the original power to drive the scraper chain 13 in cyclical motion.

[0024] The tail drive unit 12 has a similar structure to the head drive unit 11, both including a sprocket structure. One of its core functions is to support and guide the scraper chain 13 from the head back to the tail, forming an endless loop. In some large conveyors, the tail is often equipped with a drive device of the same specifications as the head, realizing dual drive at both ends to provide greater total traction.

[0025] The scraper chain 13 is the "traction and load-bearing body" of the equipment, which includes scrapers and chains. The scrapers are fixed to the chains through connecting rings. When the chains move in the chute, the scrapers directly push or pull the material forward.

[0026] The head push unit 14 and the tail push unit 15 are mainly used to tension the scraper chain 13, move the machine as a whole, and cope with the bending of the machine body to adapt to the advancement and undulation of the working face.

[0027] The core working principle is as follows: the open chute serves as the bearing structure for coal, gangue, or other materials, while the scraper chain 13 acts as the traction component. After the motor is started, it drives the sprocket on the head shaft to rotate, causing the scraper chain 13 to circulate and move the material along the chute until it is unloaded at the head of the machine. The scraper chain 13 operates in a stepless closed loop around the sprocket, thus completing the continuous conveying of materials.

[0028] As a comparative example of the scraper conveyor of the present invention, such as Figure 1 For scraper conveyors that are not equipped with dust collectors, and such Figure 2 For scraper conveyors equipped with dust collectors, it is possible to... Figure 2 It can be seen that the scraper conveyor's chute baffle 1 is provided with a hollow interlayer 10 for installing a dust collector.

[0029] Example 1 The integrated blow-suction dust collector, installed on the baffle of the scraper conveyor chute, is in a straight line shape and includes an air intake 2, a dust removal section 6, a power section 4, and an air outlet 3. The dust removal section 6 and the power section 4 are located within a hollow interlayer. The air intake 2 is located at the bottom, and the air outlet 3 is located at the top. Utilizing the suction effect, it effectively controls the dust generated by the coal cutting machine within the chute's internal space for efficient purification. The purified gas is discharged from the air outlet 3, preventing dust diffusion and achieving dust source control. Typically, in practical applications at fully mechanized mining faces, the scraper conveyor is used in conjunction with the hydraulic support 9. The dust collector installed on the scraper conveyor chute baffle 1 purifies the working environment on the personnel side, protecting the health of miners.

[0030] Furthermore, a power unit is installed in the power section 4, and a cyclone dust collector is installed in the dust removal section 6. The power unit provides power for the operation of the cyclone dust collector. The power unit can be an electric device, a hydraulic device, or an electro-hydraulic device.

[0031] Example 2 In this embodiment, a nozzle 5 is installed in the power section 4 to wash the inhaled dust-laden gas. Most of the dust is thoroughly mixed with water after washing, forming a "dust-water mixture". After the "dust-water mixture" enters the dust removal section 6, the cyclone dust collector rotates at high speed, generating a strong centrifugal force. Under the action of centrifugal force, the dust-water mixture and water droplets, which are much denser than the gas, are violently thrown against the cylinder wall of the dust collector. The gas purified by the cyclone dust collector still carries a large number of fine water droplets. Therefore, this invention also provides a dehydration section 7 before the air outlet 3 and after the dust removal section 6. The dehydration section 7 is equipped with a dehydration device to separate the washed gas from the water. The separated clean gas is discharged from the air outlet 3. The dehydration device is driven by a power unit.

[0032] The dust collector in this embodiment also includes a power assembly 8 for transmitting and distributing power to the power unit. The power unit regulates the start and stop of the cyclone dust collector and the dewatering device.

[0033] The dehydration device includes swirl vanes and baffles. When liquid-containing gas passes through the gaps between the swirl vanes, the airflow changes from linear motion to high-speed rotation due to the specific tilt angle and arrangement of the vanes; and since the density of small liquid droplets is much greater than that of gas, the small droplets are violently thrown forward onto the baffles under inertia, thus achieving gas-liquid separation.

[0034] Example 3 Based on Embodiment 1 or 2 above, this embodiment further specifies that the air outlet 3 is equipped with a spray device, which can form water mist or mist cannon at the air outlet 3. The dust collector uses water jet to create negative pressure, that is, it uses the arranged spray device to form a water jet to create negative pressure, so as to suck up the dust generated by the coal mining machine cutting coal. At the same time, the spray at the air outlet 3 forms a dense water mist that is sprayed towards the coal wall, thus forming a water curtain dust barrier on the side of the coal mining machine and the personnel walkway, preventing the dust escaping from the coal mining machine from spreading to the personnel walkway side. At the same time, the dust on the side of the coal wall settles.

[0035] In some embodiments, several dust collectors of the present invention are sequentially arranged along the extension direction of the chute baffle 1. Each dust collector can be independently controlled and its start and stop can be controlled according to actual on-site needs (such as changes in dust concentration, the position of the coal mining machine, etc.). This achieves the control of dust around the coal mining machine during coal cutting, as well as the control of dust generated when irregular sidewall collapses.

[0036] The dust collector of this invention is mainly used to filter dust and clean gas. The air outlet 3 is obliquely sprayed towards the coal wall, which can play the role of ejection and air curtain blocking, preventing the dust escaped by the coal mining machine from spreading to the pedestrian side.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A scraper conveyor with dust removal function, characterized in that: It includes a chute baffle vertically arranged on the side of the base (9), the chute baffle is provided with a hollow interlayer (10), and a dust collector is vertically arranged in the hollow interlayer (10); wherein the air inlet (2) of the dust collector is located at the bottom and the air outlet (3) is located at the top, and the dust generated by the coal cutting machine is purified and discharged by using the suction effect.

2. The scraper conveyor with dust removal function according to claim 1, characterized in that: It also includes a head drive unit (11) and a tail drive unit (12) disposed at both ends of the axial direction of the base (9), and a scraper chain (13) disposed along the axial direction of the base (9); the two ends of the scraper chain (13) are respectively provided with a head push unit (14) and a tail push unit (15).

3. The scraper conveyor with dust removal function according to claim 1, characterized in that: The dust collector is in a straight line shape and includes an air inlet (2), a dust removal section (6), a power section (4) and an air outlet (3) in sequence. The dust removal section (6) and the power section (4) are located in the hollow interlayer.

4. The scraper conveyor with dust removal function according to claim 3, characterized in that: The power section (4) is equipped with a power unit, and the dust removal section (6) is equipped with a cyclone dust collector. The power unit provides power for the operation of the cyclone dust collector.

5. The scraper conveyor with dust removal function according to claim 4, characterized in that: The power section (4) also includes a nozzle (5) for washing the inhaled dust-laden gas; a dehydration section (7) is provided between the air outlet (3) and the dust removal section (6), and a dehydration device is provided in the dehydration section (7) to separate the washed gas from the water, and the separated clean gas is discharged from the air outlet (3); the dehydration device is driven by the power device.

6. The scraper conveyor with dust removal function according to claim 5, characterized in that: The dehydration device includes swirl vanes and baffles.

7. The scraper conveyor with dust removal function according to claim 4, characterized in that: It also includes a powertrain (8) that transmits and distributes power to the power unit.

8. The scraper conveyor with dust removal function according to claim 4, characterized in that: The power unit is an electric device, a hydraulic device, or an electro-hydraulic device.

Images