CN218410797U - Multi-stage dustproof structure for radiator, radiator assembly and operation machine - Google Patents

Abstract

The utility model relates to a dustproof field provides a multistage dustproof construction, radiator subassembly and operation machinery for radiator, including equipment cabin, one-level dust screen and second grade dust screen, the equipment under-deck is used for setting up the radiator, and is provided with the hatch door on the equipment cabin, and one-level dust screen detachably connects on the hatch door, and the second grade dust screen is used for detachably to connect the one side that is close to the hatch door at the radiator. In the heat dissipation process, cooling air firstly passes through the primary dustproof net, most of dust and other impurities are filtered by the primary dustproof net, and the cooling air subjected to dust removal by the primary dustproof net immediately passes through the secondary dustproof net for secondary dust removal and finally reaches the radiator. Because the one-level dust screen sets up on the hatch door, when debris such as dust are more on the one-level dust screen, can open the hatch door and directly exempt from to tear open and wash the one-level dust screen, can not lead to the fact the influence to equipment such as the radiator in the equipment compartment, owing to be provided with the one-level dust screen, also can reduce the cleaning frequency of second grade dust screen moreover.

Description

Multi-stage dustproof structure for radiator, radiator assembly and operation machine

Technical Field

The utility model relates to a dustproof technical field especially relates to a multistage dustproof construction, radiator subassembly and operation machinery for radiator.

Background

In order to ensure that an engine of engineering machinery or a hydraulic oil radiator can work stably, a dustproof net is usually arranged on the air inlet side of the radiator to prevent impurities such as dust, cotton wool and leaves from being accumulated on the surfaces of fins of the radiator, so that the radiating efficiency is reduced. Particularly, when the dust screen works in a severe environment with large dust, such as a mine, thick dust can be accumulated on the dust screen.

At present, single-stage filtration is adopted, the dust screen is usually attached to the surface of a radiator fin, the dust screen needs to be detached and shaken off when being cleaned, and the dust screen needs to be cleaned or replaced when being serious. Frequent dismantlement dust screen can increase operating personnel's maintenance time, and when shaking off the dust more, easily make dirty operator's clothing, the dust is also inhaled the respiratory track by the operator easily, influences operator's healthy.

Therefore, how to solve the problem that the dust screen needs to be frequently disassembled to clean the dust screen in the prior art becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multistage dustproof construction, radiator subassembly and operation machinery for solve and need frequently dismantle the dust screen among the prior art and carry out clear defect to the dust screen, realize reducing the effect that the number of times was dismantled to the dust screen.

The utility model provides a multistage dustproof construction for radiator, include: the equipment cabin is used for placing a radiator and is provided with a cabin door; the primary dustproof net is detachably arranged on the cabin door; and the second-stage dustproof net is detachably arranged on one side, close to the cabin door, of the radiator.

According to the utility model provides a multistage dustproof construction for radiator, the mesh density of one-level dust screen is greater than the mesh density of second grade dust screen.

According to the utility model provides a multistage dustproof construction for radiator, the one-level dust screen with the hatch door and the second grade dust screen with all connect through the fixation clamp between the radiator.

According to the utility model provides a multistage dustproof construction for radiator, the fixation clamp includes mounting panel and splint, the mounting panel with splint rotate the connection through the round pin axle, just the mounting panel with be provided with the elastic component between the splint, the elastic component provides the messenger the mounting panel with the power that the exposed core of splint is close to each other, the mounting panel be used for with the hatch door or the radiator is connected.

According to the utility model provides a multistage dustproof construction for radiator, the exposed core of mounting panel with be provided with locating component between the exposed core of splint, locating component is used for the restriction one-level dust screen or the second grade dust screen with fixation clamp relative slip.

According to the utility model provides a multistage dustproof construction for radiator, locating component includes two first gaskets or first grafting subassembly, wherein: the two first gaskets are respectively arranged on one side, close to the clamping plate, of the clamping end of the mounting plate and one side, close to the mounting plate, of the clamping end of the clamping plate; first grafting subassembly includes first arch and first recess, first arch sets up the exposed core of mounting panel with on one of them of the both sides that the exposed core of splint is close to each other, first recess sets up the exposed core of mounting panel with on another of the both sides that the exposed core of splint is close to each other, first arch is used for passing the one-level dust screen or the second grade dust screen and with first recess is pegged graft.

According to the utility model provides a multistage dustproof construction for radiator, locating component includes two second gaskets and second plug assembly, wherein: the two second gaskets are respectively arranged on one side, close to the clamping plate, of the clamping end of the mounting plate and one side, close to the mounting plate, of the clamping end of the clamping plate; the second plug-in component comprises a second protrusion and a second groove; the second protrusion is arranged on one of two sides of the clamping end of the mounting plate and the clamping end of the clamping plate, which are close to each other, the second groove is arranged on the other of the two sides of the clamping end of the mounting plate and the clamping end of the clamping plate, which are close to each other, and the second protrusion and the second groove respectively penetrate through the corresponding second gasket, or the second protrusion and the second groove are respectively arranged on two opposite side surfaces of the two second gaskets; the second protrusion is used for penetrating the primary dust screen or the secondary dust screen and is connected with the second groove in an inserting mode.

The utility model also provides a radiator module, include the radiator and as above be used for the multistage dustproof construction of radiator.

According to the utility model provides a radiator module, the edge of radiator along perpendicular to air inlet direction with be provided with the heat insulating part between the equipment compartment.

The utility model also provides an operation machine, include as above be used for the multistage dustproof construction of radiator or as above radiator subassembly.

The utility model provides a multistage dustproof construction for radiator, including equipment cabin, one-level dust screen and second grade dust screen, the equipment cabin is used for placing the radiator, and still is provided with the hatch door on the equipment cabin, and one-level dust screen detachably connects on the hatch door, and the second grade dust screen is used for detachably to connect the one side that is close to the hatch door at the radiator. In the heat dissipation process, cooling air firstly passes through the primary dust screen, larger impurities such as leaves carried in the air are blocked outside the primary dust screen, certain dust can be filtered out, and the cooling air subjected to dust removal through the primary dust screen immediately passes through the secondary dust screen for secondary dust removal and finally reaches the radiator. Because the first-level dust screen sets up on the hatch door, when debris such as dust were more on the first-level dust screen, can open the hatch door and directly exempt from to tear open and wash the first-level dust screen, can not cause the influence to equipment such as radiators in the equipment compartment, owing to be provided with the first-level dust screen, also can reduce the cleaning frequency of second grade dust screen moreover.

Further, in the present invention, since the multistage dustproof structure for the radiator is provided as described above, the same advantages as described above can be obtained.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a heat sink assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of a heat sink assembly according to an embodiment of the present invention;

fig. 3 is a side view of a heat sink assembly provided by an embodiment of the present invention;

fig. 4 is a side view of a mounting clip provided with a first positioning assembly according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a mounting clip provided with a second positioning assembly in accordance with an embodiment of the present invention;

fig. 6 is a cross-sectional view of a mounting clip provided with a third positioning assembly in accordance with an embodiment of the present invention;

fig. 7 is a schematic structural view of a fixing clip provided with a fourth positioning assembly according to an embodiment of the present invention;

fig. 8 is an exploded view of a mounting clip provided with a fourth positioning assembly in accordance with an embodiment of the present invention;

reference numerals:

100: a primary dust screen; 200: a secondary dust screen; 300: a fixing clip; 310: mounting a plate; 311: a first connection block; 320: a splint; 321: a second connecting block; 330: a pin shaft; 340: a torsion spring; 350: a first gasket; 361: a first protrusion; 362: a first groove; 370: a second gasket; 381: a second protrusion; 382: a second groove; 400: a heat sink; 500: an equipment compartment; 510: a platform; 520: a side frame; 530: a top cross beam; 540: a cabin door; 550: a hook hinge; 560: a heat insulation sponge.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be described below with reference to fig. 1 to 8, with reference to a multistage dustproof structure for a radiator, a radiator assembly, and a working machine.

The utility model provides a multistage dustproof construction for radiator, including equipment cabin 500, one-level dust screen 100 and second grade dust screen 200. The equipment compartment 500 is used for placing the heat sink 400, a compartment door 540 is arranged on the equipment compartment 500, the primary dustproof net 100 is detachably arranged on the compartment door 540, and the secondary dustproof net 200 is detachably arranged on one side, close to the compartment door 540, of the heat sink 400 and close to the heat dissipation fins. In the heat dissipation process, the cooling air enters the cabin through the cabin door 540 from the outside of the equipment cabin 500, firstly, the first-level dust removal is carried out through the first-level dust screen 100 after entering the cabin, and when passing through the first-level dust screen 100, the larger impurities such as leaves mixed with the cooling air are blocked at the outside of the first-level dust screen 100, and meanwhile, the first-level dust screen 100 can also filter out a part of dust. Then the cooling air further passes through second grade dust screen 200, and second grade dust screen 200 carries out the secondary filter to the cooling air, and second grade dust screen 200 further filters the dust.

Most of impurities and dust have been filtered to one-level dust screen 100, because one-level dust screen 100 has set up on hatch door 540, when impurity such as the dust of collecting on one-level dust screen 100 was more, can open hatch door 540, directly exempts from to tear open to one-level dust screen 100 and washes, can not lead to the fact the influence to the equipment of equipment compartment 500 internally mounted. Compared with the prior art, the time for disassembling the dustproof net is saved, and the cleaning efficiency of the dustproof net is greatly improved. Because second grade dust screen 200 laminating radiator 400 installation, consequently need pull down it when clean, nevertheless because first-level dust screen 100 has filtered most impurity such as dust, greatly reduced second grade dust screen 200 go up the accumulation speed of impurity such as dust, and then reduced second grade dust screen 200's clean frequency.

The utility model provides a multistage dustproof construction for radiator has realized the effect that reduces the dismantlement frequency of dust screen, has improved the clean efficiency of dust screen.

In an embodiment of the present invention, the mesh density of the first-stage dust-proof net 100 is greater than the mesh density of the second-stage dust-proof net 200, so that most of the impurities such as dust can be filtered out by the first-stage dust-proof net 100, the dust-removing pressure of the second-stage dust-proof net 200 is greatly reduced, and the accumulation speed of the dust on the second-stage dust-proof net 200 is reduced. As the primary dustproof net 100 can be cleaned without being disassembled, the disassembly frequency of the dustproof net is greatly reduced, and the cleaning efficiency of the dustproof net is improved.

In addition, the first-stage dust screen 100 and the second-stage dust screen 200 are connected in a detachable connection mode, when the accumulated amount of impurities such as dust on the first-stage dust screen 100 is large and the direct washing cannot be thorough, the first-stage dust screen and the second-stage dust screen can be detached for cleaning, and the second-stage dust screen 200 can also be detached for cleaning.

In an embodiment of the present invention, the detachable connection between the first-stage dust-proof net 100 and the door 540 and between the second-stage dust-proof net 200 and the heat sink 400 can be achieved by using the fixing clip 300. The dismounting mode of the fixing clamp 300 is simple and quick, dismounting and mounting of the first-stage dust screen 100 or the second-stage dust screen 200 can be achieved only by operating the opening and closing of the clamping end of the fixing clamp 300, and the dismounting efficiency of the first-stage dust screen 100 and the second-stage dust screen 200 can be greatly improved.

Further, the fixing clip 300 may include a mounting plate 310 and a clamping plate 320, two first connecting blocks 311 protruding toward the clamping plate 320 may be disposed in a middle portion of the mounting plate 310 on a side close to the clamping plate 320, the two first connecting blocks 311 are distributed along a width direction of the mounting plate 310, and a shaft hole penetrating through the first connecting blocks 311 along the width direction of the mounting plate 310 is disposed in the first connecting blocks 311. The middle position that is close to mounting panel 310 one side at splint 320 is provided with two convex second connecting blocks 321 to mounting panel 310 direction, and two second connecting blocks 321 distribute along the width direction of splint 320, and the distance between the one side that two second connecting blocks 321 are close to each other equals the distance between the both sides that two first connecting blocks 311 on the mounting panel 310 kept away from each other, is provided with the blind hole in the one side that two second connecting blocks 321 are close to each other.

During the installation, two first connecting blocks 311 set up between two second connecting blocks 321, and use round pin axle 330 to pass the shaft hole in two first connecting blocks 311, and in the blind hole of two second connecting blocks 321 was inserted at the both ends of round pin axle 330, so, realized that mounting panel 310 and splint 320's rotation is connected.

An elastic member is further disposed between the mounting plate 310 and the clamping plate 320, and the elastic member is used to provide an elastic force for the mounting plate 310 and the clamping plate 320 to enable clamping ends of the two to approach each other.

For example, the elastic member may be a torsion spring 340, a spring portion of the torsion spring 340 is sleeved on a portion of the pin 330 between the two first connecting blocks 311, and two extending arms of the torsion spring 340 are respectively in contact with two sides of the mounting plate 310 and the clamping plate 320 that are close to each other.

When the dustproof net is used, an operator controls the operating ends of the mounting plate 310 and the clamping plate 320 to enable the operating ends to be close to each other, the clamping ends of the mounting plate 310 and the clamping plate 320 are far away from each other, the fixing clamp 300 is opened at the moment, the torsion spring 340 is twisted and deformed to store force, and the primary dustproof net 100 or the secondary dustproof net 200 can be detached or mounted at the moment. When the operating ends of the mounting plate 310 and the clamping plate 320 are loosened, the torsion spring 340 recovers deformation to release elasticity, the operating ends of the mounting plate 310 and the clamping plate 320 are pushed to be away from each other, the clamping ends of the mounting plate 310 and the clamping plate 320 are close to each other, and the clamping ends of the mounting plate 310 and the clamping plate 320 can clamp the primary dust screen 100 or the secondary dust screen 200 under the action of the elasticity of the torsion spring 340.

A through hole may be formed at the operation end of the mounting plate 310, and a screw hole may be formed in the pod door 540 or the heat sink 400, so that the through hole of the mounting plate 310 may be aligned with the screw hole of the pod door 540 or the heat sink 400 during mounting, and a bolt may pass through the through hole and the screw hole in sequence to complete fastening of the fixing clip 300.

When the primary dust-proof net 100 and the secondary dust-proof net 200 are clamped between the clamping ends of the mounting plate 310 and the clamping plate 320, and the primary dust-proof net 100 or the secondary dust-proof net 200 is impacted or pulled, the primary dust-proof net 100 or the secondary dust-proof net 200 may slide relative to the clamping ends of the fixing clamp 300, so that the primary dust-proof net 100 or the secondary dust-proof net 200 is separated from the fixing clamp 300. Therefore, in order to solve the above problem, in an embodiment of the present invention, a positioning assembly is disposed between the clamping end of the mounting plate 310 and the clamping end of the clamping plate 320, and the positioning assembly can limit the relative sliding between the first-stage dust screen 100 or the second-stage dust screen 200 and the fixing clip 300.

Specifically, the positioning assembly may have the following four structures.

First, the positioning assembly may include two first spacers 350, and the two first spacers 350 may be respectively disposed on a side of the clamping end of the mounting plate 310 adjacent to the clamping plate 320 and a side of the clamping end of the clamping plate 320 adjacent to the mounting plate 310. The first gasket 350 may be made of a soft material, such as a rubber material. Adopt soft material can prevent that fixation clamp 300 from haring one-level dust screen 100 or second grade dust screen 200, and soft material's coefficient of friction is higher simultaneously, can effectively prevent that one-level dust screen 100 or second grade dust screen 200 from separating with fixation clamp 300.

Second, the positioning assembly may include a first plug assembly including a first protrusion 361 and a first groove 362, the first protrusion 361 may be disposed on a side of the clamping end of the mounting plate 310 close to the clamping plate 320 and protrude toward the clamping plate 320, and the first groove 362 may be disposed on a side of the clamping end of the clamping plate 320 close to the mounting plate 310 and recess toward a direction away from the mounting plate 310. The positions of the first-stage dust screen 100 and the second-stage dust screen 200, which are connected with the fixing clip 300, are provided with connecting holes, and when the first protrusion 361 penetrates through the connecting holes and then is inserted into the first groove 362. The first protrusion 361 and the first groove 362 can prevent the first-stage dust screen 100 or the second-stage dust screen 200 from being separated from the fixing clip 300 after being inserted.

Or the first protrusion 361 may be disposed on a side of the clamping end of the clamping plate 320 adjacent to the mounting plate 310, and the first recess 362 may be disposed on a side of the clamping end of the mounting plate 310 adjacent to the clamping plate 320.

Third, the positioning assembly may include two second spacers 370 and a second plug assembly. The second plug assembly comprises a second projection 381 and a second recess 382.

Two second spacers 370 are respectively disposed on a side of the clamping end of the mounting plate 310 close to the clamping plate 320 and a side of the clamping end of the clamping plate 320 close to the mounting plate 310.

The second protrusion 381 may be disposed on a side of the clamping end of the mounting plate 310 adjacent to the clamping plate 320, and the second recess 382 may be disposed on a side of the clamping end of the clamping plate 320 adjacent to the mounting plate 310. Or the second recess 382 may be provided at a side of the clamping end of the mounting plate 310 adjacent to the clamping plate 320, and the second protrusion 381 may be provided at a side of the clamping end of the clamping plate 320 adjacent to the mounting plate 310. The second protrusion 381 and the second groove 382 penetrate the corresponding second gasket 370. Connecting holes are formed in the positions, connected with the fixing clamps 300, of the first-stage dust-proof net 100 and the second-stage dust-proof net 200, and when the first-stage dust-proof net and the second-stage dust-proof net are connected, the second protrusions 381 penetrate through the connecting holes and then are inserted into the second grooves 382. The second protrusion 381 and the second groove 382 may be inserted to prevent the first dust-proof screen 100 or the second dust-proof screen 200 from being separated from the fixing clip 300.

Fourth, the second protrusion 381 and the second groove 382 of the third embodiment may be respectively disposed at both sides of the two second gaskets 370 that are close to each other. Connecting holes are formed in the positions, connected with the fixing clamps 300, of the first-stage dust-proof net 100 and the second-stage dust-proof net 200, and when the first-stage dust-proof net and the second-stage dust-proof net are connected, the second protrusions 381 penetrate through the connecting holes and then are inserted into the second grooves 382. The second protrusion 381 and the second groove 382 may be inserted to prevent the first dust-proof screen 100 or the second dust-proof screen 200 from being separated from the fixing clip 300.

In one embodiment of the present invention, the equipment pod 500 includes a platform 510, a side frame 520, a top cross member 530, and a door 540.

The platform 510 is used as a mounting carrier, the heat sink 400 and the side frames 520 are both disposed on the top of the platform 510, the side frames 520 can be disposed in two numbers, the heat sink 400 is located in the middle of the platform 510, the two side frames 520 can be disposed on the edge of the platform 510 on both sides of the heat sink 400, and the two ends of the top cross beam 530 are connected to the tops of the two side frames 520, so as to fix the tops of the two side frames 520.

A hook hinge 550 may be provided at a front side of one of the side frames 520, one side of the door 540 may be rotatably coupled to the side frames 520 by the hook hinge 550, and the other side of the door 540 may be rotated to a position contacting a front side of the other side frame 520 to open and close the door 540.

Further, the utility model provides a radiator module, radiator module include radiator 400 and as above be used for the multistage dustproof construction of radiator, owing to be provided with as above be used for the multistage dustproof construction of radiator, consequently have with as above the same advantage, no longer describe here.

The mounting plate 310 of the fixing clip 300 may be mounted on the inner edge of the hatch 540 or on the side of the heat sink 400 adjacent to the hatch 540. When the device is installed, the fixing clip 300 is opened, the primary dust screen 100 is fixed to the hatch 540, and the secondary dust screen 200 is fixed to the heat sink 400. When the dust screen needs to be disassembled and cleaned, the fixing clamp 300 is opened, and the primary dust screen 100 or the secondary dust screen 200 is disassembled. When the primary dust screen 100 needs to be cleaned, the primary dust screen 100 can be cleaned by directly opening the hatch 540 without detaching the primary dust screen 100.

Further, since the cooling air is changed into hot air after passing through the hatch 540, the primary dust screen 100, the secondary dust screen 200, and the heat sink 400, in order to prevent the hot air from flowing back, a heat insulating member may be provided between both sides of the heat sink 400 in the width direction and the side frames 520, and the heat insulating member may be a heat insulating sponge 560.

The utility model provides a still provide an operation machinery, operation machinery can be for excavator, hoist etc. are provided with the machinery of radiator 400, owing to be provided with as above be used for the multistage dustproof construction of radiator or as above the radiator subassembly, consequently have with as above the same advantage, no longer describe here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A multistage dustproof structure for a radiator, comprising:

the equipment compartment (500) is used for placing the radiator (400), and the equipment compartment (500) is provided with a compartment door (540);

the primary dust screen (100), the primary dust screen (100) is detachably arranged on the cabin door (540);

the secondary dust screen (200) is used for being detachably arranged on one side, close to the cabin door (540), of the radiator (400).

2. The multistage dustproof structure for a heat sink according to claim 1, wherein a mesh density of the primary dustproof mesh (100) is larger than a mesh density of the secondary dustproof mesh (200).

3. The multistage dustproof structure for heat sink according to claim 1 or 2, wherein the primary dustproof net (100) and the hatch (540) and the secondary dustproof net (200) and the heat sink (400) are connected by a fixing clip (300).

4. The multistage dustproof structure for heat sink according to claim 3, wherein the fixing clip (300) comprises a mounting plate (310) and a clamping plate (320), the mounting plate (310) and the clamping plate (320) are rotatably connected by a pin (330), and an elastic member is disposed between the mounting plate (310) and the clamping plate (320), the elastic member provides a force to make the clamping ends of the mounting plate (310) and the clamping plate (320) close to each other, and the mounting plate (310) is used for connecting with the cabin door (540) or the heat sink (400).

5. The multistage dustproof structure for a heat sink according to claim 4, wherein a positioning component is provided between the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320), and the positioning component is used for limiting the relative sliding between the first-stage dustproof net (100) or the second-stage dustproof net (200) and the fixing clip (300).

6. The multi-stage dustproof structure for a heat sink according to claim 5, wherein the positioning assembly comprises two first gaskets (350) or a first plug assembly, wherein:

the two first gaskets (350) are respectively arranged at two sides where the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320) are close to each other;

the first plug-in component comprises a first protrusion (361) and a first groove (362), the first protrusion (361) is arranged on one of two sides of the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320) close to each other, the first groove (362) is arranged on the other of two sides of the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320) close to each other, and the first protrusion (361) is used for penetrating through the primary dust screen (100) or the secondary dust screen (200) and is plugged into the first groove (362).

7. The multi-stage dustproof structure for a heat sink according to claim 5, wherein the positioning assembly comprises two second gaskets (370) and a second plug assembly, wherein:

the two second gaskets (370) are respectively arranged at two sides of the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320) which are close to each other;

the second plug assembly comprises a second projection (381) and a second recess (382);

the second protrusion (381) is arranged on one of two sides of the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320) which are close to each other, the second groove (382) is arranged on the other of two sides of the clamping end of the mounting plate (310) and the clamping end of the clamping plate (320) which are close to each other, and the second protrusion (381) and the second groove (382) respectively penetrate through the corresponding second gasket (370), or the second protrusion (381) and the second groove (382) are respectively arranged on two opposite side faces of the two second gaskets (370);

the second protrusion (381) is used for penetrating through the primary dust screen (100) or the secondary dust screen (200) and is plugged with the second groove (382).

8. A heat sink assembly comprising a heat sink (400) and a multi-stage dust-proof structure for a heat sink according to any one of claims 1 to 7.

9. A radiator assembly according to claim 8, wherein thermal insulation is provided between the edge of the radiator (400) perpendicular to the direction of the incoming air and the equipment compartment (500).

10. A working machine comprising a multistage dust-proofing structure for a heat sink according to any one of claims 1 to 7 or a heat sink assembly according to claim 8 or 9.

Images