CN215822469U

CN215822469U - Filtering mechanism and oil tank

Info

Publication number: CN215822469U
Application number: CN202122198876.XU
Authority: CN
Inventors: 彭勇; 周丽娟; 孙树奎; 邱佳明
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-15
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to a filtering mechanism and an oil tank. The filtering mechanism includes: the filter is internally provided with a filter cavity, and the filter is provided with a filter outlet which is communicated with the filter cavity and a first opening for inserting a liquid inlet pipe; the sliding piece is connected with the filter in a sliding manner, and a second opening is formed in the sliding piece; the first elastic piece is arranged between the sliding piece and the filter. When the feed liquor pipe is inserted in the first opening and drives the sliding part to slide relative to the filter, the first elastic part elastically deforms, the filter cavity is divided into a first cavity and a second cavity by the sliding part, the first opening, the first cavity, the second opening and the second cavity are sequentially communicated, and the second cavity is communicated with the filter outlet. Above-mentioned filtering mechanism, the slider can fall down along with the feed liquor pipe of different length for the second opening is located standard fluid position, and later the resorption can make the fluid position in the filter chamber be in standard fluid position. The filtering mechanism is convenient for filling operation and sucking oil back.

Description

Filtering mechanism and oil tank

Technical Field

The utility model relates to the technical field of filtration, in particular to a filtering mechanism and an oil tank.

Background

The power steering is a technology for improving the comfort of the automobile, can automatically provide steering force when a driver steers, thereby reducing the steering labor intensity of the driver, and the power steering oil is used as medium oil filled in a steering system to play roles of transmitting the steering force and buffering.

At present, the production line of each large automobile enterprise adopts a vacuum filling mode to fill power steering oil for automobiles, but the lengths and the trends of pipelines of all automobile types are different, so that the required filling amount of a system is inconsistent, excessive power steering oil can be filled normally in order to ensure that oil in the system is sufficient, and excessive oil in an oil tank is recovered after the filling work of the vacuum filling system is finished, so that the oil level in the oil tank is in a standard oil position.

The oil tank that has been furnished with the dipstick has appeared at present, according to the position that the oil trace that the dipstick outside end dipped in on judges fluid, stops when fluid reaches standard fluid position annotating, but this mode need only be observed with the first oil dip rod of proposing for the filling operation is inconvenient, and fluid probably has been annotated excessively during the observation, still needs the resorption fluid.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a filtering mechanism and an oil tank which are convenient for the oil level to be in the standard oil position, aiming at the problem that the oil level is inconvenient to be in the standard oil position in the traditional oil tank.

A filter mechanism comprising:

the filter is internally provided with a filter cavity, and the filter is provided with a filtering outlet and a first opening, wherein the filtering outlet is communicated with the filter cavity, and the first opening is used for being inserted with a liquid inlet pipe;

the sliding piece is connected with the filter in a sliding manner, and a second opening is formed in the sliding piece;

the first elastic piece is arranged between the sliding piece and the filter;

when the liquid inlet pipe inserted into the first opening acts on the sliding piece, the first elastic piece is elastically deformed, the sliding piece slides relative to the filter, the filter cavity is divided into a first cavity and a second cavity by the sliding piece, the first opening, the first cavity, the second opening and the second cavity are sequentially communicated, and the second cavity is communicated with the filter outlet.

In one embodiment, when the liquid inlet pipe inserted into the first opening releases the sliding member, the first elastic member elastically returns to urge the sliding member to close the first opening.

In one embodiment, an accommodating cavity with an accommodating opening is formed in the sliding part, the accommodating opening is opposite to the first opening and used for being plugged with the liquid inlet pipe, and the second opening is communicated with the accommodating cavity.

In one embodiment, the sliding part comprises a sliding part and a covering part which are connected with each other, the sliding part is connected with the filter in a sliding manner, the covering part is positioned in the filter cavity and is connected with the first elastic piece, the sliding part and the covering part define the accommodating cavity, and the second opening and the accommodating opening are arranged on the sliding part;

when the liquid inlet pipe inserted into the first opening releases the sliding piece, the first elastic piece elastically restores to urge the covering part to close the first opening.

In one embodiment, at least a portion of the sliding member is disposed in the first opening and slidably connected to an inner wall of the first opening.

In one embodiment, a bump structure is arranged on one of the sliding part and the inner wall of the first opening, and the sliding part is connected with the inner wall of the first opening in a sliding manner through the bump structure.

In one embodiment, the first elastic element is deformed and abutted between the sliding element and the wall of the filter cavity facing the first opening.

In one embodiment, the filter comprises a body and a joint, wherein an inner cavity is arranged in the body, a plug port communicated with the inner cavity is formed in the body, the joint is partially plugged in the body through the plug port, the joint and the cavity wall of the inner cavity define the filter cavity, and the first opening is formed in the joint;

wherein, the filtering outlet is arranged on the body.

In one embodiment, the connector comprises a first sub-connector and a second sub-connector which are connected with each other, the second sub-connector is connected with the body and is partially inserted into the body through the insertion port, the first sub-connector is connected with a part of the second sub-connector, which extends out of the body, and the first opening is formed in the first sub-connector and the second sub-connector;

the joint further comprises a second elastic piece, and the second elastic piece is elastically abutted between the first sub-joint and the body in the direction of the central axis of the first opening.

An oil tank is characterized by comprising a tank body and any one of the filtering mechanisms, wherein a storage cavity is arranged in the tank body, a tank opening communicated with the storage cavity is formed in the tank body, the filtering mechanism is arranged in the storage cavity, and the first opening is communicated with the tank opening.

Foretell filtering mechanism and oil tank, when liquid is filled to needs, the feed liquor pipe peg graft in first opening and with the slider butt, the slider can remove for the filter along with the feed liquor pipe together for the slider is split into first chamber and second chamber with the filter chamber, first opening, first chamber, second opening and second chamber communicate in proper order, liquid in the feed liquor pipe flows to the second intracavity through the second opening from first chamber, until being full of whole filter chamber at last or roughly being full of whole filter chamber. At the moment, because the second opening is positioned at the standard oil position of the system, when the liquid inlet pipe sucks back redundant oil, the oil in the second cavity can only flow into the first cavity again through the second opening. After the feed liquor pipe accomplished the resorption to unnecessary fluid, promptly for the feed liquor pipe will follow the complete suction of the fluid that the second chamber flows to first chamber, the fluid position and the second opening parallel and level in the second intracavity to the fluid position of having guaranteed to filter the intracavity is in standard fluid position. Meanwhile, when the liquid inlet pipes with different lengths act on the sliding piece, the elastic deformation of the first elastic piece is different, and the moving distance of the sliding piece relative to the filter is different, so that the positions of the second openings are different, namely the corresponding standard oil positions are different, and the requirements of different systems on different filling quantities are met.

Drawings

FIG. 1 is a block diagram of a filter mechanism according to one embodiment of the present invention;

fig. 2 is a schematic view of the filter mechanism of fig. 1 during vacuum priming.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, an embodiment of the present invention provides a filtering mechanism 100, where the filtering mechanism 100 is disposed in an oil tank and is used for filtering oil entering the oil tank. It should be understood that in other embodiments, the filter mechanism 100 may be disposed in other structures that need to have a filtering function, and is not limited herein. Oil tanks are used in power steering systems of automobiles. It should be understood that in other embodiments, the oil tank may be used in other structures, and is not limited thereto.

The oil tank comprises a tank body and a filtering mechanism 100, wherein a storage cavity is arranged in the tank body, and an assembly opening communicated with the storage cavity is also arranged on the tank body. A filter chamber 114 is provided in the filter mechanism 100, and a first opening 115 and a filter outlet 113 both communicated with the filter chamber 114 are provided on the filter mechanism 100. The filter mechanism 100 is arranged in the storage cavity, and the first opening 115 is communicated with the tank opening, so that when oil is filled, the liquid inlet pipe 170 is inserted into the first opening 115 through the tank opening, the oil flows to the filter cavity 114 from the liquid inlet pipe 170, and after being filtered by the filter mechanism 100, the oil flows into the storage cavity from the filter outlet 113, and the cleanliness of the oil in the storage cavity is improved.

The filter mechanism 100 includes a filter 110, a slider 120, and a first elastic member 130. The first opening 115, the filter cavity 114 and the filter outlet 113 are all disposed on the filter 110, the sliding member 120 is disposed with a second opening, the sliding member 120 is slidably connected to the filter 110, and a first elastic member 130 is disposed between the sliding member 120 and the filter 110.

Referring to fig. 2, when the liquid inlet pipe 170 is inserted into the first opening 115 and acts on the sliding member 120, the first elastic member 130 is elastically deformed, the liquid inlet pipe 170 drives the sliding member 120 to slide relative to the filter 110, the filter cavity 114 is divided into a first cavity and a second cavity by the sliding member 120, the first opening 115, the first cavity, the second opening and the second cavity are sequentially communicated, and the second cavity is communicated with the filter outlet 113.

In the filtering mechanism 100, when oil needs to be filled, the liquid inlet pipe 170 is inserted into the first opening 115 and abutted against the sliding member 120, the sliding member 120 can move together with the liquid inlet pipe 170 relative to the filter 110, so that the sliding member 120 divides the filtering chamber 114 into the first chamber and the second chamber, the first opening 115, the first chamber, the second opening and the second chamber are sequentially communicated, and the oil in the liquid inlet pipe 170 flows from the first chamber into the second chamber through the second opening until the whole filtering chamber 114 is filled or the whole filtering chamber 114 is substantially filled. At this time, since the second opening is located at the standard oil position of the system, when the liquid inlet pipe 170 sucks back the excessive oil, the oil in the second chamber can only flow into the first chamber again through the second opening. After the liquid inlet pipe 170 finishes the suck-back of the redundant oil, that is, after the oil flowing from the second chamber to the first chamber is completely sucked by the liquid inlet pipe 170, the oil position in the second chamber is flush with the second opening, so that the oil position in the filter chamber 114 is at the standard oil position. Meanwhile, when the liquid inlet pipes 170 with different lengths act on the sliding member 120, the elastic deformation of the first elastic member 130 is different, and the moving distance of the sliding member 120 relative to the filter 110 is different, so that the positions of the second openings are different, that is, the corresponding standard oil positions are different, and the requirements of different systems on different filling amounts are met.

Further, when the liquid inlet pipe 170 inserted into the first opening 115 is taken out, the sliding member 120 is released, and the sliding member 120 can return to the initial position under the action of the first elastic member 130, so that the first opening 115 is closed, and therefore, the oil in the filter chamber 114 can only flow out from the filter outlet 113, and the oil is prevented from overflowing from the first opening 115 during the driving process.

In some embodiments, the filter 110 includes a body 111 and a connector 112, the filter outlet 113 is disposed on the body 111, an inner cavity is disposed in the body 111, a socket connected to the inner cavity is disposed on the body 111, the connector 112 enables a portion of the connector 112 to be plugged into the body 111 through the socket, the connector 112 and a wall of the inner cavity define a filter cavity 114, and a first opening 115 is formed in the connector 112. When the filter 110 is positioned within the storage cavity of the canister, the connector 112 abuts the wall of the storage cavity surrounding the opening of the canister.

The body 111 includes a cylinder 119 and a filter element 118, one axial end of the cylinder 119 is closed, the insertion port is opened at the other axial end of the cylinder 119, the connector 112 is inserted into the insertion port from the axial direction of the cylinder 119, and the first opening 115 is opened in the connector 112 along the axial direction of the cylinder 119. The filtering outlet 113 is arranged on the side surface of the cylinder 119, the filter element 118 is arranged in the cylinder 119, and oil liquid in the cylinder 119 flows out from the filtering outlet 113 after being filtered by the filter element 118.

Specifically, the joint 112 includes a first sub-joint 116 and a second sub-joint 117 which are connected to each other, the second sub-joint 117 is connected to the body 111, a portion of the second sub-joint 117 is inserted into the barrel 119 through the insertion port, the first sub-joint 116 is connected to a portion of the second sub-joint 117 extending out of the barrel 119, and a first opening 115 is formed in the first sub-joint 116 and the second sub-joint 117.

In some embodiments, the first sub-joint 116 and the second sub-joint 117 are connected by an introduction type quick-insertion installation, the inner side surface of the end portion of the first sub-joint 116 close to the second sub-joint 117 is provided with a protrusion, the outer side surface of the end portion of the second sub-joint 117 close to the first sub-joint 116 is provided with a protrusion, and the first sub-joint 116 and the second sub-joint 117 are mutually buckled by the protrusion, so that the first sub-joint 116 and the second sub-joint 117 are prevented from being separated.

The joint 112 further includes a second elastic member 150, and the second elastic member 150 abuts between the first sub-joint 116 and the cylinder 119 along the central axis direction of the first opening 115 (the axial direction of the cylinder 119). When the filtering mechanism 100 is installed in the oil tank, the first sub-joint 116 is pressed to enable the second elastic piece 150 to generate elastic deformation, and the first sub-joint 116 abuts against the cavity wall at the tank opening, so that after the filtering mechanism 100 is installed in the assembly cavity, under the supporting action of the second elastic piece 150, the first sub-joint 116 is in close contact with the cavity wall at the tank opening, and the filtering mechanism 100 is convenient to install, fix and disassemble. The second elastic member 150 is embodied as a spring.

The second elastic element 150 is abutted with the cylinder 119 through the gasket 160, and the gasket 160 is abutted with the outer surface of the second sub-joint 117, so that the sealing performance of the filter mechanism 100 is improved, and the oil in the filter cavity 114 is prevented from leaking from the position where the joint 112 is connected with the body 111.

Specifically, the sliding member 120 is provided therein with a receiving cavity 126, the receiving cavity 126 is communicated with the second opening and has a receiving opening, and the receiving opening is opposite to the first opening 115 of the filter 110, so that the liquid inlet pipe 170 can be inserted into the receiving cavity 126 of the sliding member 120 from the first opening 115 through the receiving opening, thereby facilitating the movement of the sliding member 120 by the liquid inlet pipe 170.

In some embodiments, the sliding member 120 further includes a sliding portion 124 and a covering portion 122 connected to each other, the sliding member 120 is slidably connected to the filter 110 through the sliding portion 124, the sliding portion 124 and the covering portion 122 define a receiving cavity 126, the second opening and the receiving opening are both disposed on the sliding portion 124, and the covering portion 122 is disposed in the filter cavity 114 and connected to the first elastic member 130.

When the liquid inlet pipe 170 is inserted into the first opening 115 and acts on the sliding member 120, the liquid inlet pipe 170 abuts against the covering portion 122 to drive the sliding member 120 to slide relative to the filter 110, the first elastic member 130 is elastically deformed, the filter cavity 114 is divided into a first cavity and a second cavity by the sliding member 120, the portion of the accommodating cavity 126 located in the filter cavity 114 is the first cavity, the first opening 115, the first cavity, the second opening and the second cavity are sequentially communicated, and the second cavity is communicated with the filtering outlet 113. When the second opening is slid to the standard oil position by the liquid inlet pipe 170, oil can be filled into the filter cavity 114 through the liquid inlet pipe 170, the accommodating cavity 126 and the second opening. After the suck-back is completed, the liquid inlet pipe 170 inserted into the first opening 115 is taken out, and after the sliding member 120 is released, the sliding member 120 can return to the initial position under the action of the first elastic member 130, so that the covering portion 122 closes the first opening 115.

Further, the sliding portion 124 is disposed in the first opening 115, and the sliding portion 124 is slidably connected to an inner wall of the first opening 115.

Optionally, one of the sliding portion 124 and the inner wall of the first opening 115 is provided with a bump structure 128, and the sliding portion 124 and the inner wall of the first opening 115 are slidably connected by the bump structure 128, so that the two are in point contact through a bump, thereby reducing the friction force when the sliding portion 124 slides relative to the first opening 115.

In some embodiments, the bump structures 128 are dot-shaped protrusions and are disposed on the sliding portion 124. The sliding portion 124 is in point contact with the inner wall of the second sub-joint 117 through the bump structure 128 and can relatively slide within the second sub-joint 117.

Optionally, the first elastic member 130 is embodied as a spring and elastically abuts between the covering portion 122 and a cavity wall of the filter cavity 114 facing the first opening 115, and when the filling operation is not performed, the covering portion 122 abuts against the second sub-joint 117 under the pressing action of the first elastic member 130 so as to close the first opening 115. When oil needs to be filled, the liquid inlet pipe 170 can drive the sliding part 120 to extrude the first elastic part 130 so as to move, and after the liquid inlet pipe 170 is taken out and the sliding part 120 is released, the sliding part 120 returns to the initial position under the pushing action of the first elastic part 130, so that the first opening 115 is closed by the cover-arranging part 122, and the oil is prevented from overflowing.

In other embodiments, the first elastic element 130 is embodied as a tension spring and is disposed between the covering portion 122 and a wall of the filter chamber 114 in which the first opening 115 is disposed, and the sliding element 120 closes the first opening 115 under a pulling force of the first elastic element 130 when the filling operation is not performed. When oil needs to be filled, the liquid inlet pipe 170 can drive the sliding part 120 to stretch the first elastic part 130 so as to move, and after the liquid inlet pipe 170 is taken out, the sliding part 120 returns to the initial position under the action of the tensile force of the first elastic part 130 so as to close the first opening 115, so that the oil is prevented from overflowing.

In the filter mechanism 100 of the present embodiment, when the filling operation is not performed, under the action of the first elastic member 130, the covering portion 122 abuts against the second sub-joint 117 to close the first opening 115, and at this time, the sliding portion 124 is located in the first opening 115. When oil needs to be filled, the liquid inlet pipe 170 is inserted into the first opening 115, and abuts against the covering portion 122 through the accommodating cavity 126, so that the sliding member 120 is driven to slide relative to the filter 110, the first elastic member 130 is elastically deformed, the filter cavity 114 is divided into a first cavity and a second cavity by the sliding member 120, the part of the accommodating cavity 126, which is located in the filter cavity 114, is the first cavity, the first opening 115, the first cavity, the second opening and the second cavity are sequentially communicated, and the second cavity is communicated with the filter outlet 113. When the second opening is slid to the standard oil position by the liquid inlet pipe 170, oil can be filled into the filter cavity 114 through the liquid inlet pipe 170, the accommodating cavity 126 and the second opening. After the suck-back is completed, the liquid inlet pipe 170 inserted into the first opening 115 is taken out, and the sliding member 120 is released, the sliding member 120 can return to the initial position under the action of the first elastic member 130, so that the covering portion 122 closes the first opening 115, the oil in the filter chamber 114 is ensured to flow into the assembly chamber from the filter outlet 113 after being filtered by the filter element 118, and the cleanliness of the oil is improved.

Therefore, this filtering mechanism 100 has adapted to the diversified configuration of whole car motorcycle type and has leaded to turning to the demand of fluid filling volume diverse, has promoted vacuum filling efficiency, has simplified operating personnel's filling operation, and the excessive fluid of resorption of being convenient for reduces fluid extravagant and avoids oil tank fluid too much to spill over, promotes user's use and experiences.

Based on the filtering mechanism 100, another embodiment of the present invention further provides an oil tank, where the oil tank includes a tank body and the filtering mechanism 100 in the above embodiment, a storage cavity is disposed in the tank body, a tank opening communicating with the storage cavity is disposed on the tank body, the filtering mechanism 100 is disposed in the storage cavity, and the first opening 115 is communicated with the tank opening. The specific application and connection of the filtering mechanism 100 are described in the above embodiments, and therefore, the detailed description is omitted.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A filter mechanism, comprising:

the first elastic piece is arranged between the sliding piece and the filter;

2. The filter mechanism of claim 1, wherein when the liquid inlet pipe inserted into the first opening releases the sliding member, the first elastic member elastically returns to urge the sliding member to close the first opening.

3. The filter mechanism according to claim 1 or 2, wherein the sliding member has a receiving cavity therein with a receiving opening, the receiving opening is opposite to the first opening for inserting the liquid inlet pipe, and the second opening is communicated with the receiving cavity.

4. The filter mechanism according to claim 3, wherein the sliding member comprises a sliding portion and a covering portion connected to each other, the sliding portion is slidably connected to the filter, the covering portion is located in the filter cavity and connected to the first elastic member, the sliding portion and the covering portion define the accommodating cavity, and the second opening and the accommodating opening are both provided on the sliding portion;

5. The filter mechanism of claim 1, wherein at least a portion of the slider is disposed within the first opening and is slidably coupled to an inner wall of the first opening.

6. The filter mechanism of claim 5, wherein a bump structure is disposed on one of the sliding member and the inner wall of the first opening, and the sliding member and the inner wall of the first opening are slidably connected via the bump structure.

7. A filter mechanism according to claim 1, wherein the first resilient element is arranged to deform against the sliding element and against a wall of the filter chamber facing the first opening.

8. The filter mechanism of claim 1, wherein the filter comprises a body and a connector, wherein an inner cavity is formed in the body, a socket communicated with the inner cavity is formed in the body, the connector is partially plugged in the body through the socket, the connector and a cavity wall of the inner cavity define the filter cavity, and the first opening is formed in the connector;

wherein, the filtering outlet is arranged on the body.

9. The filter mechanism of claim 8, wherein the connector comprises a first sub-connector and a second sub-connector connected to each other, the second sub-connector being connected to the body and partially inserted into the body through the insertion port, the first sub-connector being connected to a portion of the second sub-connector extending out of the body, the first opening being formed in the first sub-connector and the second sub-connector;

10. An oil tank, characterized in that, it comprises a tank body and a filtering mechanism according to any one of claims 1 to 9, wherein a storage cavity is arranged in the tank body, a tank opening communicated with the storage cavity is arranged on the tank body, the filtering mechanism is arranged in the storage cavity, and the first opening is communicated with the tank opening.