CN221201805U - Dustproof device and power equipment - Google Patents

Abstract

The utility model provides a dustproof device and power equipment, the dustproof device includes: the dustproof shell is arranged at the air port of the outdoor cabinet and is positioned outside the outdoor cabinet, and the dustproof shell is provided with a dustproof cavity communicated with the air port; the dustproof device comprises a dustproof cavity, a plurality of first dustproof pieces, a plurality of second dustproof pieces and a plurality of third dustproof pieces, wherein the first dustproof pieces are arranged at the opening of the dustproof cavity, which is far away from one end of the tuyere, the second dustproof pieces and the third dustproof pieces are arranged in the dustproof cavity at intervals, the second dustproof pieces and the third dustproof pieces form a labyrinth channel in the dustproof cavity, the first dustproof pieces are used for preventing sand and dust from entering the labyrinth channel, and the labyrinth channel is used for preventing sand and dust from entering the tuyere. By adopting the scheme, the labyrinth type channel can be formed in the dustproof cavity, so that after sand and dust enter the labyrinth type channel, the dust-proof effect of the dustproof device is improved under the resistance of impacting the second dustproof piece or the third dustproof piece and friction. The problem of dust keeper among the prior art dustproof effect poor can effectively be solved.

Description

Dustproof device and power equipment

Technical Field

The utility model relates to the technical field of power equipment, in particular to a dustproof device and power equipment.

Background

At present, as one of the power equipment, under abominable sand and wind environment, sand and dust invade in the outdoor cabinet can influence the performance of inside electrical components, also can accelerate corrosion inner structure to reduce life-span, consequently need consider protection grade and sand prevention structure when outdoor cabinet designs. The dustproof thought of general outdoor cabinet is that directly seal the gap with wind channel air inlet and outlet joint position department, but because wind channel air inlet and outlet can not seal completely, consequently, is dust screen plus baffle structure usually, but this kind of design still can not completely isolate the dust, has the dust screen to block easily, and it is higher to change the dust screen expense, maintains comparatively trouble problem.

Disclosure of utility model

The utility model provides a dustproof device and power equipment, and aims to solve the problem that the dustproof effect of the dustproof device in the prior art is poor.

In order to solve the above-described problems, according to an aspect of the present utility model, there is provided a dust-proof device comprising: the dustproof shell is arranged at the air port of the outdoor cabinet and is positioned outside the outdoor cabinet, and the dustproof shell is provided with a dustproof cavity communicated with the air port; the dustproof device comprises a dustproof cavity, a plurality of first dustproof pieces, a plurality of second dustproof pieces and a plurality of third dustproof pieces, wherein the first dustproof pieces are arranged at the opening of the dustproof cavity, which is far away from one end of the tuyere, the second dustproof pieces and the third dustproof pieces are arranged in the dustproof cavity at intervals, the second dustproof pieces and the third dustproof pieces form a labyrinth channel in the dustproof cavity, the first dustproof pieces are used for preventing sand and dust from entering the labyrinth channel, and the labyrinth channel is used for preventing sand and dust from entering the tuyere.

Further, the dustproof shell comprises an outer side plate, a first side plate, an inner side plate and a second side plate which are connected end to end in sequence, the first dustproof piece comprises a first baffle and a second baffle, the outer side plate, the first side plate and the second side plate are all connected with the first baffle, the inner side plate, the first side plate and the second side plate are all connected with the second baffle, the first baffle and the second baffle are arranged at intervals, and the first baffle and the second baffle are all used for preventing sand and dust from entering into the labyrinth passage.

Further, a plurality of second dust keeper include third baffle, fourth baffle and the fifth baffle that the interval set up, a plurality of third dust keeper include sixth baffle and the seventh baffle that the interval set up, first curb plate, the second curb plate all is connected with the third baffle, interior curb plate, first curb plate, the second curb plate all is connected with the fourth baffle, interior curb plate, first curb plate, the second curb plate all is connected with the fifth baffle, the exterior plate, first curb plate, the second curb plate all is connected with the sixth baffle, the exterior plate, first curb plate, the second curb plate all is connected with the seventh baffle, the third baffle, sixth baffle, the fourth baffle, seventh baffle, the fifth baffle sets gradually at dustproof intracavity and forms labyrinth passageway.

Further, the opening of dustproof shell is towards ground, and at least one second dust keeper includes first plate body, second plate body and third plate body, and first plate body, third plate body are connected with the both sides of second plate body respectively, and first plate body is located the tip of second plate body, and first plate body, third plate body all are mutually perpendicular with the second plate body, form the quicksand passageway between second plate body and the second baffle, and quicksand passageway and dustproof intracavity's opening intercommunication, quicksand passageway are used for discharging the sand and dust that get into in the labyrinth passageway.

Further, the at least one third dustproof piece comprises a fourth plate body, a fifth plate body and a sixth plate body, wherein the fifth plate body and the sixth plate body are arranged on one side, facing the first baffle, of the fourth plate body, the sixth plate body and the fourth plate body are mutually perpendicular, the fifth plate body is positioned at the end part of the fourth plate body, an included angle A facing one side of the first baffle is formed between the fifth plate body and the fourth plate body, and the included angle A is more than or equal to 90 degrees and less than or equal to 180 degrees.

Further, the dust-proof device further comprises a storage Sha Ke, the sand storage shell is arranged below the dust-proof shell in an openable and closable manner and is communicated with the labyrinth passage, and the storage Sha Ke is used for storing sand falling from the labyrinth passage.

Further, a plurality of quicksand openings are formed in the bottom of the dustproof shell at intervals, and the cavity of the storage Sha Ke is communicated with the labyrinth passage through the quicksand openings.

Further, the bottom of the sand storage shell is provided with a sealing door which can be opened and closed.

Further, the dustproof device further comprises a first dustproof net and a second dustproof net, the first dustproof net is arranged at the opening of the dustproof cavity, the second dustproof net is arranged at the air opening, the first dustproof net is used for preventing sand and dust from entering the dustproof cavity, and the second dustproof net is used for preventing sand and dust in the dustproof cavity from entering the air opening.

According to another aspect of the present utility model there is provided an electrical apparatus comprising an outdoor cabinet and the dust guard described above.

By applying the technical scheme of the utility model, the utility model provides a dustproof device, which comprises the following components: the dustproof shell is arranged at the air port of the outdoor cabinet and is positioned outside the outdoor cabinet, and the dustproof shell is provided with a dustproof cavity communicated with the air port; the dustproof device comprises a dustproof cavity, a plurality of first dustproof pieces, a plurality of second dustproof pieces and a plurality of third dustproof pieces, wherein the first dustproof pieces are arranged at the opening of the dustproof cavity, which is far away from one end of the tuyere, the second dustproof pieces and the third dustproof pieces are arranged in the dustproof cavity at intervals, the second dustproof pieces and the third dustproof pieces form a labyrinth channel in the dustproof cavity, the first dustproof pieces are used for preventing sand and dust from entering the labyrinth channel, and the labyrinth channel is used for preventing sand and dust from entering the tuyere. By adopting the scheme, the first dust-proof piece is arranged at the opening of the dust-proof cavity far away from one end of the air port, so that sand and dust can be prevented from entering the labyrinth passage; simultaneously, a plurality of second dustproof pieces and a plurality of third dustproof pieces are arranged, a labyrinth type channel can be formed in the dustproof cavity, so that after sand and dust enter the labyrinth type channel, the purpose of preventing the sand and dust from entering the air port is realized under the resistance of impacting the second dustproof pieces or the third dustproof pieces and friction, and the sand and dust are further prevented from entering the air port, so that the dustproof effect of the dustproof device is improved. By utilizing the dustproof device of the scheme, the problem that the dustproof effect of the dustproof device in the prior art is poor can be effectively solved. Wherein, the flowing direction of the labyrinth channel in the dustproof cavity is continuously changed, and the channel of the labyrinth channel presents a continuous S shape.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic view of a dust-proof device according to an embodiment of the present utility model;

FIG. 2 shows a side view of the dust guard of FIG. 1;

Fig. 3 is a schematic view showing a structure of a dust-proof device provided by an embodiment of the present utility model in which a first dust-proof net and a second dust-proof net are installed.

Wherein the above figures include the following reference numerals:

10. A dust-proof case; 11. a dust-proof cavity; 12. an outer panel; 13. a first side plate; 14. an inner side plate; 16. a sand flow port; 17. a quicksand passage;

20. A first dust-proof member; 21. a first baffle; 22. a second baffle;

30. A second dust-proof member; 31. a third baffle; 311. a first plate body; 312. a second plate body; 313. a third plate body; 32. a fourth baffle; 33. a fifth baffle;

40. A third dust-proof member; 41. a sixth baffle; 411. a fourth plate body; 412. a fifth plate body; 413. a sixth plate body; 42. a seventh baffle;

50. a reservoir Sha Ke; 51. sealing the door;

61. a first dust screen; 62. a second dust screen;

70. an outdoor cabinet.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a dust-proof device including: a dust-proof case 10 installed at a tuyere of the outdoor cabinet 70 and located outside the outdoor cabinet 70, the dust-proof case 10 having a dust-proof chamber 11 communicating with the tuyere; the first dust-proof piece 20, a plurality of second dust-proof pieces 30 and a plurality of third dust-proof pieces 40, the first dust-proof piece 20 sets up the opening part of keeping away from wind gap one end at dustproof chamber 11, a plurality of second dust-proof pieces 30, a plurality of third dust-proof pieces 40 all interval sets up in dustproof chamber 11, a plurality of second dust-proof pieces 30 and a plurality of third dust-proof pieces 40 form labyrinth passageway in dustproof chamber 11, first dust-proof piece 20 is used for preventing the dust from entering labyrinth passageway, labyrinth passageway is used for preventing the dust from entering the wind gap.

With the adoption of the scheme, the first dust-proof piece 20 is arranged at the opening of the dust-proof cavity 11 at the end far away from the air port, so that sand and dust can be prevented from entering the labyrinth passage; the second dust-proof pieces 30 and the third dust-proof pieces 40 are arranged simultaneously, so that a labyrinth channel can be formed in the dust-proof cavity 11, and after sand and dust enter the labyrinth channel, the purpose of preventing the sand and dust from entering the air port is realized under the resistance of impacting the second dust-proof pieces 30 or the third dust-proof pieces 40 and friction, and the sand and dust are further prevented from entering the air port, so that the dust-proof effect of the dust-proof device is improved. By utilizing the dustproof device of the scheme, the problem that the dustproof effect of the dustproof device in the prior art is poor can be effectively solved. Wherein, the flowing direction of the labyrinth channel in the dustproof cavity is continuously changed, and the channel of the labyrinth channel presents a continuous S shape.

The dustproof shell 10 comprises an outer side plate 12, a first side plate 13, an inner side plate 14 and a second side plate which are connected end to end in sequence, the first dustproof piece 20 comprises a first baffle 21 and a second baffle 22, the outer side plate 12, the first side plate 13 and the second side plate are all connected with the first baffle 21, the inner side plate 14, the first side plate 13 and the second side plate are all connected with the second baffle 22, the first baffle 21 and the second baffle 22 are arranged at intervals, and the first baffle 21 and the second baffle 22 are all used for preventing sand and dust from entering the labyrinth passage.

The setting like this can be connected first baffle 21 and second baffle 22, and first baffle 21 and second baffle 22 interval set up, can effectively prevent sand and dust to enter into the labyrinth passageway like this, has improved dust keeper dustproof effect.

In this scheme, the length of the first baffle 21 is greater than the length of the second baffle 22, and the first baffle 21 and the second baffle 22 are both disposed obliquely.

Further, the second dust-proof pieces 30 include third, fourth and fifth baffles 31, 32 and 33 arranged at intervals, the third dust-proof pieces 40 include sixth and seventh baffles 41, 42 arranged at intervals, the first and second side plates 13, 13 are all connected with the third baffle 31, the inner side plate 14, 13 and 33 are all connected with the fourth baffle 32, the outer side plate 12, 13 and 33 are all connected with the sixth baffle 41, the outer side plate 12, 13 and 42 are all connected with the seventh baffle 42, and the third, sixth, fourth and seventh baffles 31, 32, 42 and 33 are sequentially arranged in the dust-proof chamber 11 to form a labyrinth passage.

By adopting the connection mode, the third baffle 31, the sixth baffle 41, the fourth baffle 32, the seventh baffle 42 and the fifth baffle 33 are sequentially arranged in the dustproof cavity 11, so that a labyrinth passage is formed, and sand and dust can be effectively prevented from entering the air port by the labyrinth passage.

In this embodiment, the opening of the dust-proof housing 10 faces the ground, the at least one second dust-proof member 30 includes a first plate 311, a second plate 312 and a third plate 313, the first plate 311 and the third plate 313 are respectively connected to two sides of the second plate 312, the first plate 311 is located at an end of the second plate 312, the first plate 311 and the third plate 313 are perpendicular to the second plate 312, a quicksand channel 17 is formed between the second plate 312 and the second baffle 22, the quicksand channel 17 is communicated with the opening of the dust-proof cavity 11, and the quicksand channel 17 is used for discharging sand and dust entering the labyrinth channel.

By arranging the opening of the dust-proof housing 10 to face the ground, as can be seen from fig. 1, the dust-proof housing opening faces the ground, so that sand can be further prevented from directly entering the dust-proof cavity 11; meanwhile, a quicksand passage 17 is formed between the second plate body 312 and the second baffle 22, so that the sand and dust blocked by the first plate body 311, the second plate body 312, and the third plate body 313 can flow out of the opening of the dust chamber 11 through the quicksand passage 17.

It should be noted that: the dust-proof shell 10 may be shaped as a circular arc with the opening facing the ground, wherein the opening of the dust-proof shell 10 may be perpendicular to the ground or may be at a certain angle.

Specifically, the at least one third dust-proof member 40 includes a fourth plate 411, a fifth plate 412 and a sixth plate 413, where the fifth plate 412 and the sixth plate 413 are disposed on a side of the fourth plate 411 facing the first baffle 21, the sixth plate 413 and the fourth plate 411 are perpendicular to each other, the fifth plate 412 is located at an end of the fourth plate 411, and an included angle a between the fifth plate 412 and the fourth plate 411 facing the side of the first baffle 21 is equal to or greater than 90 ° and equal to or less than 180 °.

Through the above connection manner, the included angle between the fifth plate 412 and the fourth plate 411 is set within the above angle range, so that sand and dust can be ensured to flow out from the opening of the dust-proof cavity 11 after hitting the fifth plate 412 and the fourth plate 411.

In this embodiment, the dust-proof device further includes a storage Sha Ke, the sand-storing shell 50 is openably and closably disposed below the dust-proof shell 10 and is in communication with the labyrinth passage, and the sand-storing shell 50 is used for storing the sand falling from the labyrinth passage.

So set up, can open and store up Sha Ke when maintaining dust keeper 50, empty the inside fine sand of storing up the sand shell 50, again close and store up Sha Ke 50, it is comparatively convenient and pleasing to the eye to maintain.

Meanwhile, the joint between the sand storage shell 50 and the dust-proof shell 10 may be sealed with a sealing rubber strip.

Wherein, a plurality of quicksand openings 16 are arranged at intervals at the bottom of the dustproof shell 10, and the cavity of the sand storage shell 50 is communicated with the labyrinth passage through the quicksand openings 16.

So set up, with the cavity that stores up the sand shell 50 through quicksand mouth 16 and labyrinth passageway intercommunication, utilize quicksand mouth 16, can be smoothly with the sand dust inflow that stores in dustproof chamber 11 store in storing the sand shell 50.

In this embodiment, as shown in fig. 3, the bottom of the sand storage shell 50 has a sealing door 51 that is provided to be openable and closable. Thus, the fine sand in the sand storage shell 50 is conveniently emptied, the storage Sha Ke is closed again, and the maintenance is convenient and attractive.

Specifically, the dust-proof device further includes a first dust-proof net 61 and a second dust-proof net 62, the first dust-proof net 61 is disposed at the opening of the dust-proof cavity 11, the second dust-proof net 62 is disposed at the tuyere, the first dust-proof net 61 is used for preventing sand and dust from entering the dust-proof cavity 11, and the second dust-proof net 62 is used for preventing sand and dust in the dust-proof cavity 11 from entering the tuyere.

The first dust screen 61 and the second dust screen 62 are arranged, the first dust screen 61 is arranged at the opening of the dust cavity 11, and the second dust screen 62 is arranged at the air opening, so that sand and dust can be effectively prevented; and at the time of maintenance, the dust-proof housing 10 can be removed together, and the first dust-proof screen 61 and the second dust-proof screen 62 are on both sides of the dust-proof housing 10, so that the first dust-proof screen 61 and the second dust-proof screen 62 can be replaced and maintained conveniently.

In another embodiment, not shown in the figures, a power plant is provided, comprising an outdoor cabinet 70 and the dust protection device described above.

With the adoption of the scheme, the first dust-proof piece 20 is arranged at the opening of the dust-proof cavity 11 at the end far away from the air port, so that sand and dust can be prevented from entering the labyrinth passage; the second dust-proof pieces 30 and the third dust-proof pieces 40 are arranged simultaneously, so that a labyrinth channel can be formed in the dust-proof cavity 11, and after sand and dust enter the labyrinth channel, the purpose of preventing the sand and dust from entering the air port is realized under the resistance of impacting the second dust-proof pieces 30 or the third dust-proof pieces 40 and friction, and the sand and dust are further prevented from entering the air port, so that the dust-proof effect of the power equipment is improved. By utilizing the power equipment of the scheme, the problem of poor dustproof effect of the power equipment in the prior art can be effectively solved.

The outdoor cabinet 70 may be preferably a household energy storage system, so that when the air inlet and outlet of the household energy storage system are in a severe sand and wind environment, sand and dust can be effectively prevented from invading into the household energy storage system, thereby prolonging the service life of the household energy storage system.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A dust-proof device, comprising:

The dustproof shell (10) is arranged at a wind gap of the outdoor cabinet (70) and is positioned outside the outdoor cabinet (70), and the dustproof shell (10) is provided with a dustproof cavity (11) communicated with the wind gap;

First dust guard (20), a plurality of second dust guard (30) and a plurality of third dust guard (40), first dust guard (20) set up dust proof chamber (11) are kept away from the opening part of wind gap one end, a plurality of second dust guard (30), a plurality of third dust guard (40) all the interval sets up in dust proof chamber (11), a plurality of second dust guard (30) and a plurality of third dust guard (40) are in form labyrinth passageway in dust proof chamber (11), first dust guard (20) are used for preventing the dust and sand from entering into labyrinth passageway, labyrinth passageway is used for preventing the dust and sand from entering into the wind gap.

2. The dustproof device according to claim 1, characterized in that the dustproof shell (10) comprises an outer side plate (12), a first side plate (13), an inner side plate (14) and a second side plate which are connected end to end in sequence, the first dustproof piece (20) comprises a first baffle plate (21) and a second baffle plate (22), the outer side plate (12), the first side plate (13), the second side plate are all connected with the first baffle plate (21), the inner side plate (14), the first side plate (13), the second side plate are all connected with the second baffle plate (22), the first baffle plate (21) and the second baffle plate (22) are arranged at intervals, and the first baffle plate (21) and the second baffle plate (22) are all used for preventing sand and dust from entering into the labyrinth passage.

3. The dustproof device according to claim 2, characterized in that a plurality of the second dustproof pieces (30) comprise a third baffle (31), a fourth baffle (32) and a fifth baffle (33) which are arranged at intervals, a plurality of the third dustproof pieces (40) comprise a sixth baffle (41) and a seventh baffle (42) which are arranged at intervals, the first side plate (13), the second side plate are all connected with the third baffle (31), the inner side plate (14), the first side plate (13), the second side plate are all connected with the fourth baffle (32), the inner side plate (14), the first side plate (13), the second side plate are all connected with the fifth baffle (33), the outer side plate (12), the first side plate (13), the second side plate are all connected with the sixth baffle (41), the outer side plate (12), the first side plate (13), the second side plate are all connected with the seventh baffle (42), and the third side plate (14), the first side plate (13), the second side plate (41) and the fifth baffle (33) are sequentially arranged in the labyrinth (32).

4. The dustproof device according to claim 2, characterized in that the opening of the dustproof shell (10) faces the ground, at least one second dustproof piece (30) comprises a first plate body (311), a second plate body (312) and a third plate body (313), the first plate body (311) and the third plate body (313) are respectively connected with two sides of the second plate body (312), the first plate body (311) is positioned at the end part of the second plate body (312), the first plate body (311), the third plate body (313) and the second plate body (312) are perpendicular to each other, a quicksand channel (17) is formed between the second plate body (312) and the second baffle plate (22), the quicksand channel (17) is communicated with the opening of the dustproof cavity (11), and the quicksand channel (17) is used for discharging sand and dust entering the labyrinth channel.

5. The dustproof device according to claim 2, characterized in that at least one third dustproof piece (40) comprises a fourth plate body (411), a fifth plate body (412) and a sixth plate body (413), wherein the fifth plate body (412) and the sixth plate body (413) are arranged on one side of the fourth plate body (411) facing the first baffle plate (21), the sixth plate body (413) and the fourth plate body (411) are perpendicular to each other, the fifth plate body (412) is positioned at the end part of the fourth plate body (411), and an included angle A which is more than or equal to 90 degrees and less than or equal to 180 degrees is formed between the fifth plate body (412) and the fourth plate body (411) and faces one side of the first baffle plate (21).

6. The dust-proof device of claim 1, further comprising a reservoir Sha Ke (50), the reservoir Sha Ke (50) being openably and closably disposed below the dust-proof housing (10) and in communication with the labyrinth passage, the reservoir Sha Ke (50) being for storing sand and dust falling from within the labyrinth passage.

7. The dustproof device according to claim 6, characterized in that a plurality of quicksand openings (16) are formed in the bottom of the dustproof shell (10) at intervals, and the cavity of the storage Sha Ke (50) is communicated with the labyrinth passage through the quicksand openings (16).

8. The dust-proof device according to claim 6, characterized in that the bottom of the reservoir Sha Ke (50) has a sealing door (51) which can be opened and closed.

9. The dust-proof device according to claim 1, further comprising a first dust-proof net (61) and a second dust-proof net (62), wherein the first dust-proof net (61) is arranged at the opening of the dust-proof cavity (11), the second dust-proof net (62) is arranged at the tuyere, the first dust-proof net (61) is used for preventing sand and dust from entering the dust-proof cavity (11), and the second dust-proof net (62) is used for preventing sand and dust in the dust-proof cavity (11) from entering the tuyere.

10. An electrical power plant, characterized in that it comprises an outdoor cabinet (70) and a dust protection device according to any one of claims 1 to 9.