CN213967228U

CN213967228U - Leak protection ventilation mechanism and container

Info

Publication number: CN213967228U
Application number: CN202021857449.7U
Authority: CN
Inventors: 肖云
Original assignee: Qingdao Hanbai Plastic Technology Co ltd
Current assignee: Qingdao Hanbai Plastic Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-08-17
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a leak protection ventilation mechanism and container. A leak-proof vent mechanism comprising: the sealing piece made of elastic materials comprises a sealing part, a cavity is formed inside the sealing part, the upper part of the cavity is shielded by the sealing part, a plurality of openings are formed in the side face of the sealing part, the openings are communicated with the cavity, the openings are opened through the change of the shape, and the openings are closed through the change of the shape. The opening is formed on the side surface of the sealing element, so that paint can be prevented from directly impacting the opening, and the problem of liquid leakage caused by easy opening of the ventilating mechanism when liquid in the container impacts the ventilating mechanism is solved; the paint above the sealing part can give downward pressure to the sealing part due to the gravity of the paint, the opening is tightly pressed and closed, if the paint wants to enter the cavity through the opening, the paint needs to overcome the gravity and move upwards along the opening, and the problem that when the liquid in the container is contacted with the air vent mechanism for a long time, the liquid is easy to leak from the gap of the air vent mechanism is solved.

Description

Leak protection ventilation mechanism and container

Technical Field

The application relates to a leak-proof ventilation mechanism and a container.

Background

When the spray gun liquid storage device is connected with a spray gun to spray paint outwards, liquid in the storage cup is continuously reduced, the external air pressure difference in the spray gun liquid storage device is continuously increased, and further the storage cup is stressed and broken to cause the paint in the storage cup to flow out. The existing method for balancing the internal and external air pressure difference of the spray gun liquid storage device is to arrange an air vent on the cup bottom or the cup wall of a storage cup, and the air vent is detachably connected with a cover. When the storage cup is inverted for painting, the cover is opened to allow the air holes to continuously balance the air pressure difference.

Opening or closing the airing hole through the cover requires manual operation of a user, is very inconvenient, and is easy to forget to open or close the cover. Therefore, the ventilation mechanism which is automatically opened and closed according to the air pressure difference inside and outside the container is provided, the ventilation mechanism does not need to be operated by hands, and great convenience is brought to users. However, the above-described ventilation mechanism has the following problems:

1. when liquid in the container impacts the ventilation mechanism, the ventilation mechanism is easy to open to cause liquid leakage;

2. when the liquid in the reservoir is in contact with the vent mechanism for a long time, the liquid is easy to leak from the gap of the vent mechanism.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application proposes a leak-proof vent mechanism that solves the problem of liquid leakage caused by the vent mechanism being easily opened when liquid in a reservoir impacts the vent mechanism; the problem that liquid in a storage tank is easy to leak from a gap of the ventilation mechanism when the liquid is in contact with the ventilation mechanism for a long time is solved.

A leak-proof vent mechanism comprising: the sealing piece is made of elastic materials and comprises a sealing part, a cavity is formed in the sealing part, the upper portion of the cavity is shielded by the sealing part, a plurality of openings are formed in the side face of the sealing part and communicated with the cavity, the openings are opened through the change of the shape, and the openings are closed through the change of the shape.

Preferably, the position of the end of the opening communicated with the cavity is higher than that of the end of the opening communicated with the outside.

Preferably, the seal portion is a body of revolution.

Preferably, the sealing portion is a circular truncated cone.

Preferably, the side surface of the sealing part is formed with a plurality of openings which are circumferentially and uniformly distributed along the axis of the sealing part.

Preferably, still include the casing, the sealing member still includes the fixed part, fixed part and sealing part integrated into one piece, the inside through-hole that is formed with of fixed part, the through-hole is linked together with the cavity, fixed part and casing position are fixed.

Preferably, a flange part is formed below the fixing part, and the flange part and the sealing part clamp the shell; the housing is formed with a fixing groove into which the flange portion is inserted.

A reservoir using a leak-proof venting mechanism, comprising: the cup comprises a cup body and a cup cover, wherein the cup cover is detachably connected with the cup body, a liquid channel for fluid to pass through is formed in the cup cover, and the sealing element is fixedly connected with the cup body and/or the cup cover.

Preferably, the shell is integrally formed with the cup body and/or the cup lid, and the sealing member is fixedly connected with the shell.

The utility model has the advantages of as follows: the opening is formed in the side face of the sealing element, so that paint moving from top to bottom is prevented from directly impacting the opening, and the problem of liquid leakage caused by the fact that the ventilating mechanism is easy to open when liquid in the storage container impacts the ventilating mechanism is solved; the paint vehicle above the sealing part can give the sealing part a downward pressure due to self gravity, the opening is compressed and closed, meanwhile, the position of one end of the opening communicated with the cavity is higher than that of one end of the opening communicated with the outside, if the paint vehicle wants to enter the cavity through the opening, the paint vehicle has to overcome the gravity and move upwards along the opening, and the problem that when liquid in the container is contacted with the ventilating mechanism for a long time, the liquid is easy to leak from a gap of the ventilating mechanism is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1: the cross-sectional structure of the container of the utility model is schematically shown;

FIG. 2: the utility model is a schematic sectional structure along A;

FIG. 3: the utility model is a partial enlarged structure diagram at B;

FIG. 4: the utility model is a partial enlarged structure schematic diagram at the position C;

FIG. 5: the utility model discloses a main view structure schematic diagram of a sealing element;

FIG. 6: the utility model is a schematic sectional structure diagram cut along D;

FIG. 7: the utility model discloses the spatial structure schematic diagram of sealing member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The first embodiment is as follows:

as shown in fig. 3 and 7, the present embodiment provides a leak-proof vent mechanism including: the sealing member 3 is made of an elastic material, the sealing member 3 includes a sealing portion 31, a cavity is formed inside the sealing portion 31, the upper portion of the cavity is shielded by the sealing portion 31, a plurality of openings 311 are formed on the side surface of the sealing portion 31, the openings 311 are communicated with the cavity, the openings 311 are opened by changing the shape, and the openings 311 are closed by changing the shape.

Preferably, the position of the end of the opening 311 communicated with the cavity is higher than the position of the end of the opening 311 communicated with the outside.

Preferably, the seal portion 31 is a rotator.

Preferably, the sealing portion 31 is a circular truncated cone.

Preferably, a plurality of openings 311 are formed on the side surface of the sealing portion 31, and the openings 311 are circumferentially and uniformly distributed along the axis of the sealing portion 31.

Preferably, the sealing element further comprises a housing 4, the sealing element 3 further comprises a fixing portion 32, the fixing portion 32 and the sealing portion 31 are integrally formed, a through hole is formed in the fixing portion 32, the through hole is communicated with the cavity, and the fixing portion 32 and the housing 4 are fixed in position.

Preferably, a flange portion 322 is formed below the fixing portion 32, and the flange portion 322 and the sealing portion 31 clamp the housing 4; the case 4 is formed with a fixing groove 41, and the flange portion 322 is inserted into the fixing groove 41. During installation, the sealing part 31 of the sealing member 3 is elastically deformed to reduce the cross section of the sealing part 31, so that the sealing part 31 can pass through the hole in the shell 4, then the flange part 322 is elastically deformed to reduce the cross section of the flange part to enable the flange part to enter the fixing groove 41, the sealing member 3 is pushed upwards until the sealing part 31 leaves the hole in the shell 4 and the flange part 322 enters the fixing groove 41

The working principle is as follows:

when the air pressure difference above and below the sealing member 3 is equal or not much, the opening 311 is in a closed state, i.e. the upper and lower walls of the opening 311 are in close contact with each other, so as to prevent liquid from entering the opening 311.

When the gas pressure above the sealing element 3 is lower than the gas pressure below, gas enters from the through hole, passes through the cavity and is discharged from the opening 311 due to the gas pressure difference, and the gas pressure difference above and below the sealing element 3 is balanced.

When the liquid moves from top to bottom until it hits the seal member 3, the liquid hits the seal portion 31 and then flows downward from the outer surface of the seal portion 31. Since the opening 311 is a side opening, the liquid does not directly collide with the opening 311, causing the opening 311 to elastically deform and open, so that the liquid flows out through the opening 311.

Example two:

as shown in fig. 1-7, the embodiment provides a reservoir using the leak-proof vent mechanism of the first embodiment, comprising: cup 1 and bowl cover 2, bowl cover 2 can dismantle with cup 1 and be connected, bowl cover 2 is formed with the liquid channel 21 that supplies the fluid to pass through, sealing member 3 and cup 1 and/or bowl cover 2 fixed connection.

Preferably, the shell 4 is integrally formed with the cup body 1 and/or the cup lid 2, and the sealing member 3 is fixedly connected with the shell 4.

The working principle is as follows:

the ventilation mechanism is arranged on the cup body 1: when in use, the cup body 1 is internally provided with paint vehicle, and the cup cover 2 is fixed with the cup body 1 (can be fixed by screw thread connection). The spray gun is fixed on the liquid channel 21 of the cup cover 2 (can be fixed by screw thread connection). At this time, paint is pressed by its own weight above the side surface of the sealing portion 31, and the sealing portion 31 is deformed to bring the upper and lower walls of the opening 311 into close contact with each other, thereby closing the opening 311 and preventing the paint from flowing out of the cup body 1 through the opening 311. The position of the end of the opening 311 communicating with the cavity is higher than the position of the end of the opening 311 communicating with the outside, so that paint is prevented from flowing out of the opening 311 by gravity, and if the paint wants to enter the cavity through the opening 311, the paint must move upwards along the opening 311 against the gravity, which increases the difficulty of the upward movement of the paint and prevents the paint from flowing out of the cup body 1 through the opening 311.

The spray gun liquid reservoir was turned upside down. At the moment, the paint in the cup body 1 moves downwards under the action of gravity, and the paint moves to the cup cover 2. Spray gun work sprays paint, along with the paint vehicle in spouting cup 1 less and less, cup 1 inside and external atmospheric pressure difference are bigger and bigger, and external atmospheric pressure is high, backs down opening 311 (atress elastic deformation opening grow promptly), thereby makes external gas can get into the interior atmospheric pressure difference of 1 inside balanced cup of cup 1 through opening 311, prevents that 1 inside atmospheric pressure of cup from crossing excessively to cause with external atmospheric pressure difference too big, causes cup 1 atress to damage.

When the use is complete or when the remainder of the paint is in cup 1, the gun liquid reservoir is rotated upright and the paint will move from top to bottom until it hits seal 3. At this time, the paint may collide with the sealing portion 31, and then the outer surface of the sealing portion 31 flows downward, preventing the paint from flowing out through the opening 311. Since the opening 311 is a side opening, paint does not directly collide with the opening 311, causing the opening 311 to elastically deform and open, allowing liquid to flow downward out of the cup body 1 through the opening 311.

Opening 311 will automatically close by the weight of the paint, as in the same principle as when the inside of cup 1 is filled with paint.

Fig. 1 shows the spray gun liquid reservoir upright and inverted in the fig. 1 position with the spray gun liquid reservoir rotated 180 degrees with the liquid passage 21 below and the cup 1 above.

Preferably, the shell 4 can be mounted on a bottom 10 of the cup body 1, and a support 11 is formed below the bottom 10 to allow a space for mounting the shell 4.

The ventilation mechanism is arranged on the cup cover 2:

the paint does not come into contact with the seal 3 when the paint is stored. During operation, paint is pressed against the sealing element 3, and outside air passes through the opening 311 and moves upwards through the paint.

The principle of operation of the seal 3 is the same as when the vent mechanism is mounted on the cup 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill 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 necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A leak-proof vent mechanism, comprising: the sealing piece (3) is made of elastic materials, the sealing piece (3) comprises a sealing portion (31), a cavity is formed inside the sealing portion (31), the upper portion of the cavity is shielded by the sealing portion (31), a plurality of openings (311) are formed in the side face of the sealing portion (31), the openings (311) are communicated with the cavity, the openings (311) are opened through shape change, and the openings (311) are closed through shape change.

2. The leak-proof vent mechanism of claim 1, wherein: the position of one end of the opening (311) communicated with the cavity is higher than that of one end of the opening (311) communicated with the outside.

3. The leak-proof vent mechanism of claim 1, wherein: the sealing part (31) is a revolving body.

4. A leak-proof vent mechanism as set forth in claim 3 wherein: the sealing part (31) is a circular truncated cone.

5. A leak-proof vent mechanism as set forth in claim 3 wherein: a plurality of openings (311) are formed in the side face of the sealing portion (31), and the openings (311) are uniformly distributed along the axis of the sealing portion (31) in a circumferential mode.

6. The leak-proof vent mechanism of claim 1, wherein: still include casing (4), sealing member (3) still include fixed part (32), fixed part (32) and sealing part (31) integrated into one piece, the inside through-hole that is formed with of fixed part (32), the through-hole is linked together with the cavity, fixed part (32) and casing (4) rigidity.

7. The leak-proof vent mechanism of claim 6, wherein: a flange part (322) is formed below the fixing part (32), and the flange part (322) and the sealing part (31) clamp the shell (4); the housing (4) is formed with a fixing groove (41), and the flange portion (322) is inserted into the fixing groove (41).

8. A reservoir using the leak resistant vent mechanism of claim 6 or 7, comprising: cup (1) and bowl cover (2), bowl cover (2) can be dismantled with cup (1) and be connected, bowl cover (2) are formed with liquid channel (21) that supply fluid to pass through, sealing member (3) and cup (1) and/or bowl cover (2) fixed connection.

9. A reservoir according to claim 8, wherein: the cup is characterized in that the shell (4) is integrally formed with the cup body (1) and/or the cup cover (2), and the sealing element (3) is fixedly connected with the shell (4).

10. A reservoir using the leak resistant vent mechanism of any of claims 1 to 5, comprising: cup (1) and bowl cover (2), bowl cover (2) can be dismantled with cup (1) and be connected, bowl cover (2) are formed with liquid channel (21) that supply fluid to pass through, sealing member (3) and cup (1) and/or bowl cover (2) fixed connection.