Dust-control and moisture-proof equipment and bucket shovel with dust-control and moisture-proof equipment

Abstract

The invention provides dust-control and moisture-proof equipment and a dragline with the dust-control and moisture-proof equipment. The dust control assembly comprises a dust cover, a machine shell, an air inlet barrel and a driving device, the machine shell is provided with an air inlet part, a containing cavity and an air outlet part, the air inlet part is communicated with the air outlet part through the containing cavity, the dust cover is arranged at the air inlet part, the air inlet barrel and the driving device are both arranged in the containing cavity, and the driving device is in driving connection with the air inlet barrel; the air inlet barrel is driven to rotate; the jet flow assembly comprises a plurality of jet flow structures communicated with one another, each jet flow structure comprises an air passing pipe and a jet flow part, the jet flow part is provided with an air inlet and an air outlet which are communicated with one another, the air inlet is communicated with the air passing pipe, and the air passing area of the air outlet is smaller than the cross sectional area of the air passing pipe; the air passing pipe of at least one jet flow structure communicates with the air outlet part, and a first booster fan is arranged in the air passing pipe of at least one jet flow structure. The problem that in the prior art, a natural ventilation mode is poor in dust removal and moisture prevention effect is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation, dust control and moisture prevention for open-pit mine draglines, and in particular to a dust control and moisture prevention device and a dragline having the same. Background Art

[0002] At present, under the production conditions of the dragline heap dumping process in the Shen'ao open-pit mine, the mining site of the Shen'ao open-pit mine will produce a large amount of dust due to the working conditions of the dragline mining, heap dumping and transportation. The dust cloud is affected by the air entrainment and the local environment of the open-pit mine, resulting in extremely serious pollution of the surrounding equipment of the dragline and the surrounding atmosphere. Especially in the low-temperature winter, due to the operation of coal mining and transportation facilities and the poor air flow at the bottom of the mine, dust pollutants gather in the mine for a long time and cannot dissipate. Due to the local small inversion layer, the dust cloud covers the open-pit coal mine like a lid. In addition, the continuity of the working process leads to a continuous increase in dust pollutants, and the dust pollutants floating in the atmosphere have a low dispersion degree and are not easy to settle by gravity, causing serious air pollution inside the mine, which in turn leads to extremely poor visibility in the working area of ​​the mine, bringing great safety hazards to production. In addition, the local climate tide in special seasons aggravates the haze process, and at the same time brings great occupational safety hazards to on-site production safety and the health of on-site workers.

[0003] In the prior art, deep open pit mines usually rely on natural ventilation to improve and protect against dust pollution at the driving position of related equipment. However, the dust removal and moisture prevention effects of natural ventilation are poor and cannot meet the needs of users. Summary of the invention

[0004] The main purpose of the present invention is to provide a dust control and moisture prevention device and a dragline shovel having the same, so as to solve the problem that the dust removal and moisture prevention effects of the natural ventilation method in the prior art are poor.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a dust control and moisture prevention device, comprising: a dust control component, comprising a dust cover, a casing, an air inlet cylinder and a driving device, the casing having an air inlet portion, a accommodating chamber and an air outlet portion, the air inlet portion is connected with the air outlet portion through the accommodating chamber, the dust cover is arranged at the air inlet portion, the air inlet cylinder and the driving device are both arranged in the accommodating chamber, the driving device is drivingly connected with the air inlet cylinder to drive the air inlet cylinder to rotate; a jet component, comprising a plurality of interconnected jet structures, each jet structure comprising an air duct and a jet portion, the jet portion having an air inlet and an air outlet interconnected, the air inlet being connected with the air duct, and the air outlet having an air passing area smaller than the cross-sectional area of ​​the air duct; wherein the air duct of at least one jet structure is connected with the air outlet portion, and a first booster fan is arranged in the air duct of at least one jet structure.

[0006] Furthermore, there are multiple jet assemblies, and the air ducts of two adjacent jet assemblies are connected through a pipeline.

[0007] Furthermore, each jet part includes: an enclosure, the enclosure forms a jet cavity, and two openings of the enclosure form an air inlet and an air outlet respectively; or, one opening of the enclosure forms an air outlet, and a part of the jet cavity forms an air inlet; wherein the air inlet is connected to the air outlet through the jet cavity.

[0008] Furthermore, multiple jet structures are connected end to end to surround and form an air passage cavity, and the jet assembly also includes: a dehumidification structure, which is arranged on the cavity wall of the air passage cavity; wherein there is one dehumidification structure; or, there are multiple dehumidification structures, and the multiple dehumidification structures are arranged at intervals along the circumference and / or height direction of the air passage cavity.

[0009] Furthermore, the air outlet is an inclined outlet, and the inclined outlet is inclined toward the air passage cavity.

[0010] Furthermore, the enclosure includes a first plate body, a second plate body and a third plate body connected in sequence, and the first plate body and the third plate body are arranged opposite to each other and are located on the same side of the second plate body; wherein the first plate body and the third plate body form an air outlet on a side away from the second plate body, and a part of the jet cavity forms an air inlet.

[0011] Furthermore, the plate surface of the first plate body away from the third plate body forms a partial cavity wall of the air cavity, the side of the first plate body away from the second plate body is a first inclined surface, and the side of the third plate body away from the second plate body is a second inclined surface, and the second inclined surface is arranged to protrude from the first inclined surface.

[0012] Furthermore, the casing has a dust exhaust port, the air inlet is located between the air outlet and the dust exhaust port, and the dust control component also includes: an air duct, which is movably arranged at the air outlet; a second booster fan, which is arranged in the air duct; and a dust exhaust device, which is connected to the dust exhaust port.

[0013] Furthermore, the dust control and moisture prevention equipment also includes: a generator, used to supply power to the driving device, the first booster fan and the second booster fan; wherein the air duct is a flexible tube.

[0014] According to another aspect of the present invention, a dragline is provided, comprising a body, a boom and a dust control and moisture prevention device, wherein the boom is arranged on the body, and the dust control and moisture prevention device is arranged on the boom; wherein the dust control and moisture prevention device is the above-mentioned dust control and moisture prevention device.

[0015] According to the technical solution of the present invention, the dust control and moisture prevention equipment includes a dust control component and a jet component. The dust control component includes a dust cover, a casing, an air inlet and a driving device. The casing has an air inlet, a receiving chamber and an air outlet. The air inlet is connected to the air outlet through the receiving chamber. The dust cover is arranged at the air inlet. The air inlet and the driving device are both arranged in the receiving chamber. The driving device is connected to the air inlet to drive the air inlet to rotate. The jet component includes a plurality of jet structures that are interconnected. Each jet structure includes an air duct and a jet part. The jet part has an air inlet and an air outlet that are interconnected. The air inlet is connected to the air duct, and the air outlet has an air passing area that is smaller than the cross-sectional area of ​​the air duct. The air duct of at least one jet structure is connected to the air outlet, and a first booster fan is arranged in the air duct of at least one jet structure. In this way, during the process of mining, dumping and transportation of the dragline, the dust control and moisture prevention equipment is started to drive the air inlet tube to rotate through the driving device, thereby sucking the dust at the driving position of the dragline into the casing. After that, the gas generated in the dust control component is transported to the air duct, and then discharged from the air outlet after passing through the jet part to improve the surrounding air field, that is, the dust and moisture in the environment where the dragline is located are improved through the cooperation of the above-mentioned dust control component and the jet component to meet the requirements of safe and efficient production in open-pit mines, and solve the problem of poor dust removal and moisture prevention effects of natural ventilation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A front view of an embodiment of a dragline according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 An enlarged schematic diagram of the dragline at point A;

[0019] Figure 3 Shows Figure 1 A side view of a dragline in FIG.

[0020] Figure 4 A front view of a dust control assembly according to an embodiment of a dust control and moisture prevention device according to the present invention is shown;

[0021] Figure 5 Shows Figure 4 BB section view of the dust control component;

[0022] Figure 6 A front view of a jet assembly according to an embodiment of a dust control and moisture prevention device according to the present invention is shown;

[0023] Figure 7 Shows Figure 6 A bottom view of the jet assembly in FIG.

[0024] Figure 8 Shows Figure 6 A side view of the jet assembly in FIG.

[0025] Fig. 9 Shows Figure 8 CC section view of the jet assembly.

[0026] The above drawings include the following reference numerals:

[0027] 10. Dust control assembly; 11. Dust cover; 12. Casing; 13. Air inlet; 14. Air duct; 15. Second booster fan; 16. Dust exhaust device; 20. Jet assembly; 21. Jet structure; 211. Air duct; 212. Jet part; 2121. Air outlet; 2122. Enclosure; 2123. Jet cavity; 2124. First plate; 2125. Second plate; 2126. Third plate; 2127. First inclined surface; 2128. Second inclined surface; 22. Air cavity; 23. Dehumidification structure; 100. Machine body; 110. Upper arm; 120. Dust control and moisture prevention equipment. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0031] In order to solve the problem of poor dust removal and moisture prevention effects of natural ventilation in the prior art, the present application provides a dust control and moisture prevention device and a dragline shovel having the same.

[0032] like Figures 1 to 9As shown, the dust control and moisture prevention equipment includes a dust control component 10 and a jet component 20. The dust control component 10 includes a dust cover 11, a housing 12, an air inlet 13 and a driving device. The housing 12 has an air inlet, a receiving chamber and an air outlet. The air inlet is connected to the air outlet through the receiving chamber. The dust cover 11 is arranged at the air inlet. The air inlet 13 and the driving device are both arranged in the receiving chamber. The driving device is connected to the air inlet 13 to drive the air inlet 13 to rotate. The jet component 20 includes a plurality of jet structures 21 that are interconnected. Each jet structure 21 includes an air duct 211 and a jet part 212. The jet part 212 has an air inlet and an air outlet 2121 that are interconnected. The air inlet is connected to the air duct 211. The air outlet 2121 has an air passing area that is smaller than the cross-sectional area of ​​the air duct 211. The air duct 211 of at least one jet structure 21 is connected to the air outlet, and a first booster fan is disposed in the air duct 211 of at least one jet structure 21 .

[0033] By applying the technical solution of this embodiment, the dust control and moisture prevention equipment is started during the process of the dragline shovel for excavation, dumping and transportation, so as to drive the air inlet 13 to rotate through the driving device, and then the dust at the driving position of the dragline shovel is sucked into the casing. After that, the gas generated in the dust control component 10 is transported to the air duct 211, and then passes through the jet part 212 and is discharged from the air outlet 2121 to improve the surrounding air field, that is, the dust and moisture in the environment where the dragline shovel is located are improved through the cooperation of the above-mentioned dust control component and the jet component, so as to meet the requirements of safe and efficient production in open-pit mines, and solve the problem of poor dust removal and moisture prevention effect of natural ventilation in the prior art.

[0034] In this embodiment, by utilizing the principle of strong positive pressure jet, the casing 12 and the dust cover 11 form a closed-loop dust removal area to capture dust pollutants generated in deep open-pit mines, thereby reducing the amount of dust in the production area of ​​the bucket shovel heap dumping process and improving the visibility of the working area.

[0035] In this embodiment, the driving device is a motor, which is drivingly connected to the air inlet cylinder and is provided with a reduction gear, and the reduction gear can be adjusted according to the dehumidification efficiency and the required air volume.

[0036] Optionally, the motor is an explosion-proof motor for mining.

[0037] Optionally, there are multiple jet assemblies 20, and the air ducts 211 of two adjacent jet assemblies 20 are connected through a pipeline. In this way, the above arrangement enables the jet assembly 20 to form a continuous jet, which not only enhances the dust control effect, but also covers a larger area.

[0038] In this embodiment, in an open-pit mining environment, through the connection and coordinated operation of multiple jet assemblies 20, a comprehensive protection can be formed, which not only reduces the impact of dust and moisture on construction operations, but also ensures the continuity and efficiency of mining operations.

[0039] like Figure 7 and Fig. 9 As shown, each jet part 212 includes a panel 2122. The panel 2122 surrounds and forms a jet cavity 2123, and the two openings of the panel 2122 form an air inlet and an air outlet 2121 respectively; or, one opening of the panel 2122 forms an air outlet 2121, and a part of the jet cavity 2123 forms an air inlet; wherein the air inlet is connected to the air outlet 2121 through the jet cavity 2123. In this way, the above arrangement, on the one hand, makes the formation of the air inlet more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff; on the other hand, the above arrangement ensures the high efficiency and directionality of the jet, and effectively prevents the intrusion of dust and moisture.

[0040] In this embodiment, an opening of the enclosing plate 2122 forms an air outlet 2121, and a portion of the jet cavity 2123 forms an air inlet. In this way, the direction of the jet can be directional controlled by the above arrangement of the enclosing plate 2122, effectively dispersing dust and moisture from around the device.

[0041] like Figure 7 As shown, a plurality of jet structures 21 are connected end to end to surround and form a wind passage cavity 22. The jet assembly 20 further includes a dehumidification structure 23, which is arranged on the cavity wall of the wind passage cavity 22. In this way, by arranging the dehumidification structure 23 in the wind passage cavity 22, moisture in the air can be effectively removed.

[0042] Optionally, there is one dehumidification structure 23; or, there are multiple dehumidification structures 23, and the multiple dehumidification structures 23 are arranged at intervals along the circumferential direction and / or the height direction of the air cavity 22. In this way, the above arrangement makes the number selection and arrangement of the dehumidification structures 23 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0043] In this embodiment, the dehumidification structure 23 is strip-shaped, and the strip-shaped dehumidification structure 23 extends along the height direction of the air cavity 22 . A plurality of dehumidification structures 23 are arranged at intervals along the circumference of the air cavity 22 .

[0044] In this embodiment, the air outlet 2121 is an inclined outlet, which is inclined toward the air passage cavity 22. In this way, the above-mentioned setting of the inclined outlet can make the jet flow cover the driving position more effectively to prevent dust and moisture from being deposited at the driving position.

[0045] In this embodiment, the inclined design of the air outlet 2121 can ensure that the jet accurately covers the driving position, which not only effectively prevents the invasion of dust and moisture, but also can adapt to the protection needs of the driving position when operating at different angles through dynamic adjustment of the jet, providing a safer and more comfortable working environment for the operator.

[0046] like Fig. 9 As shown, the enclosure 2122 includes a first plate 2124, a second plate 2125, and a third plate 2126 connected in sequence, and the first plate 2124 and the third plate 2126 are arranged opposite to each other and are located on the same side of the second plate 2125; wherein the first plate 2124 and the third plate 2126 form an air outlet 2121 on a side away from the second plate 2125, and a part of the jet cavity 2123 forms an air inlet. In this way, the above arrangement can not only form a high-speed jet, but also adjust the direction and range of the jet through the layout of multiple plates, which is suitable for scenes where the jet direction needs to be flexibly adjusted.

[0047] In this embodiment, through the ingenious layout of the first plate 2124, the second plate 2125 and the third plate 2126, a directional high-speed jet can be formed, thereby improving the safety and efficiency of the cleaning operation.

[0048] like Fig. 9 As shown, the plate surface of the first plate 2124 away from the third plate 2126 forms a part of the cavity wall of the air cavity 22, the side of the first plate 2124 away from the second plate 2125 is a first inclined surface 2127, and the side of the third plate 2126 away from the second plate 2125 is a second inclined surface 2128, and the second inclined surface 2128 is protruding from the first inclined surface 2127. In this way, the above arrangement can further optimize the distribution of the jet and improve the efficiency of dust control and moisture prevention.

[0049] In this embodiment, the above-mentioned arrangement of the first inclined surface 2127 and the second inclined surface 2128 can form a uniformly distributed jet to improve the efficiency of dust control and moisture prevention.

[0050] like Figure 4 and Figure 5 As shown, the housing 12 has a dust exhaust port, the air inlet is located between the air outlet and the dust exhaust port, and the dust control component 10 also includes an air duct 14, a second booster fan 15 and a dust exhaust device 16. Among them, the air duct 14 is movably arranged at the air outlet, the second booster fan 15 is arranged in the air duct 14, and the dust exhaust device 16 is connected to the dust exhaust port. In this way, the above-mentioned arrangement can improve the dust suction efficiency of the dust control component 10, so as to quickly suck the dust at the driving position of the bucket shovel. At the same time, by providing the dust exhaust port and the dust exhaust device 16, the dust inside the dust control component 10 can be removed in time to keep the dust control component 10 in a clean state, thereby reducing the difficulty and frequency of equipment maintenance.

[0051] In this embodiment, the high-pressure wind flow discharged by the second booster fan 15 can provide energy for the jet assembly 20 .

[0052] Optionally, the dust control and moisture prevention equipment further includes a generator, which is used to supply power to the driving device, the first booster fan and the second booster fan 15.

[0053] Optionally, the air duct 14 is a flexible duct. Thus, the above-mentioned setting of the flexible air duct enables the air duct 14 to adapt to different working environments and equipment layouts, thereby improving the adaptability and flexibility of the air duct 14.

[0054] like Figures 1 to 3 As shown, the present application also provides a dragline, including a body 100, a boom 110, and a dust control and moisture prevention device 120, wherein the boom 110 is disposed on the body 100, and the dust control and moisture prevention device 120 is disposed on the boom 110. The dust control and moisture prevention device 120 is the above-mentioned dust control and moisture prevention device.

[0055] In this embodiment, the dust control assembly 10 of the dust control and moisture prevention equipment 120 is installed on the upper arm 110 .

[0056] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0057] The dust control and moisture prevention equipment includes a dust control component and a jet component. The dust control component includes a dust cover, a housing, an air inlet and a driving device. The housing has an air inlet, a receiving chamber and an air outlet. The air inlet is connected to the air outlet through the receiving chamber. The dust cover is arranged at the air inlet. The air inlet and the driving device are arranged in the receiving chamber. The driving device is connected to the air inlet to drive the air inlet to rotate. The jet component includes a plurality of jet structures connected to each other. Each jet structure includes an air duct and a jet part. The jet part has an air inlet and an air outlet connected to each other. The air inlet is connected to the air duct, and the air outlet has an air passing area smaller than the cross-sectional area of ​​the air duct. Among them, the air duct of at least one jet structure is connected to the air outlet, and a first booster fan is arranged in the air duct of at least one jet structure. In this way, during the process of mining, dumping and transportation of the dragline, the dust control and moisture prevention equipment is started to drive the air inlet to rotate through the driving device, so as to suck the dust at the driving position of the dragline into the housing. Afterwards, the gas generated in the dust control component is transported to the air duct, and then discharged from the air outlet after passing through the jet part to improve the surrounding air field. That is, the dust and moisture in the environment where the bucket shovel is located are improved through the cooperation of the above-mentioned dust control component and the jet component to meet the requirements of safe and efficient production in open-pit mines, which solves the problem of poor dust removal and moisture prevention effects of natural ventilation methods in the prior art.

[0058] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust control and moisture prevention device, characterized in that: include: A dust control assembly (10) comprises a dust cover (11), a housing (12), an air inlet cylinder (13) and a driving device, wherein the housing (12) comprises an air inlet portion, a receiving chamber and an air outlet portion, the air inlet portion is connected to the air outlet portion through the receiving chamber, the dust cover (11) is arranged at the air inlet portion, the air inlet cylinder (13) and the driving device are both arranged in the receiving chamber, and the driving device is drivingly connected to the air inlet cylinder (13) so as to drive the air inlet cylinder (13) to rotate; A jet assembly (20) comprising a plurality of jet structures (21) interconnected with each other, each of the jet structures (21) comprising an air duct (211) and a jet portion (212), the jet portion (212) having an air inlet and an air outlet (2121) interconnected with each other, the air inlet being connected to the air duct (211), and the air outlet (2121) having an air passing area smaller than a cross-sectional area of ​​the air duct (211); Wherein, the air passage duct (211) of at least one of the jet structures (21) is connected to the air outlet portion, and a first booster fan is arranged in the air passage duct (211) of at least one of the jet structures (21).

2. The dust control and moisture prevention equipment according to claim 1, characterized in that: There are a plurality of jet assemblies (20), and the air ducts (211) of two adjacent jet assemblies (20) are connected via a pipeline.

3. The dust control and moisture prevention equipment according to claim 1, characterized in that: Each of the jet parts (212) comprises: A surrounding plate (2122), wherein the surrounding plate (2122) surrounds and forms a jet cavity (2123), and the two openings of the surrounding plate (2122) respectively form the air inlet and the air outlet (2121); or, one opening of the surrounding plate (2122) forms the air outlet (2121), and a portion of the jet cavity (2123) forms the air inlet; wherein the air inlet is connected to the air outlet (2121) through the jet cavity (2123).

4. The dust control and moisture prevention equipment according to claim 3, characterized in that: A plurality of the jet structures (21) are connected end to end to surround and form an air passage cavity (22), and the jet assembly (20) further comprises: A dehumidification structure (23) is arranged on the cavity wall of the air passage cavity (22); There is one dehumidification structure (23); or, there are multiple dehumidification structures (23), and the multiple dehumidification structures (23) are arranged at intervals along the circumferential direction and / or the height direction of the air passage cavity (22).

5. The dust control and moisture prevention equipment according to claim 4, characterized in that: The air outlet (2121) is an inclined outlet, and the inclined outlet is inclined toward the air passage cavity (22).

6. The dust control and moisture prevention equipment according to claim 4, characterized in that: The enclosure (2122) includes a first plate body (2124), a second plate body (2125) and a third plate body (2126) which are connected in sequence, and the first plate body (2124) and the third plate body (2126) are arranged opposite to each other and are located on the same side of the second plate body (2125); wherein the first plate body (2124) and the third plate body (2126) form the air outlet (2121) on a side away from the second plate body (2125), and a portion of the jet cavity (2123) forms the air inlet.

7. The dust control and moisture prevention equipment according to claim 6, characterized in that: The plate surface of the first plate body (2124) facing away from the third plate body (2126) forms a partial cavity wall of the air passage cavity (22); the side of the first plate body (2124) facing away from the second plate body (2125) is a first inclined surface (2127); the side of the third plate body (2126) facing away from the second plate body (2125) is a second inclined surface (2128); and the second inclined surface (2128) is arranged to protrude from the first inclined surface (2127).

8. The dust control and moisture prevention equipment according to claim 1, characterized in that: The housing (12) has a dust exhaust port, the air inlet portion is located between the air outlet portion and the dust exhaust port, and the dust control component (10) further comprises: An air duct (14) is movably arranged at the air outlet; A second booster fan (15) is arranged in the air duct (14); A dust exhaust device (16) is communicated with the dust exhaust port.

9. The dust control and moisture prevention equipment according to claim 8, characterized in that: The dust control and moisture prevention equipment also includes: a generator, used to supply power to the driving device, the first booster fan and the second booster fan (15); Wherein, the air duct (14) is a flexible tube.

10. A dragline, characterized in that: It comprises a machine body (100), a big arm (110) and a dust control and moisture prevention device (120), wherein the big arm (110) is arranged on the machine body (100), and the dust control and moisture prevention device (120) is arranged on the big arm (110); wherein the dust control and moisture prevention device (120) is the dust control and moisture prevention device according to any one of claims 1 to 9.

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