CN212550094U

CN212550094U - Spray gun liquid reservoir cover and spray gun liquid reservoir

Info

Publication number: CN212550094U
Application number: CN202020609945.4U
Authority: CN
Inventors: 肖云
Original assignee: Qingdao Hanbai Plastic Technology Co ltd
Current assignee: Qingdao Hanbai Plastic Technology Co ltd
Priority date: 2019-12-23
Filing date: 2020-04-22
Publication date: 2021-02-19
Anticipated expiration: 2030-04-22
Also published as: CN111389609A; CN212856241U; CN111389608A

Abstract

The utility model relates to a spray gun liquid container closing cap and spray gun liquid container, including the bowl cover, be formed with liquid channel on the bowl cover, be provided with the air passage that allows gas forward to pass through into the container and not allow the liquid in the container to reverse the passing through on the bowl cover. The utility model discloses have multiple using-way, can switch the using-way wantonly according to the condition, save material and paint. The utility model discloses a soft storage cup and stereoplasm storage cup can be connected simultaneously to the closing cap to can select the soft storage cup of installation and/or stereoplasm storage cup according to the user mode more than, convenient to use is nimble, can adapt to multiple different demands in the use.

Description

Spray gun liquid reservoir cover and spray gun liquid reservoir

Technical Field

The utility model relates to a spray gun liquid container closing cap and spray gun liquid container.

Background

The paint containers (spray cups) on the market today are mainly divided into two types.

The first mode is as follows: the spray cup comprises a soft, flexible reservoir cup 3. The advantages are that: the soft storage cup 3 is soft and can be contracted, and the spraying cup can rotate at any angle and can spray paint. Since the flexible storage cup 3 is thin and low in cost, waste of plastic resources can be reduced. The disadvantages are as follows: however, since the air is discharged first and only paint remains, the soft storage cup 3 is slowly contracted, and the reaction force causes the suction force of the spray gun to be lost, resulting in uneven paint discharge. Meanwhile, the paint is more remained after the soft storage cup 3 is shrunk, so that the paint is wasted.

The second mode is as follows: the spout cup does not contain a soft reservoir cup 3. The advantages are that: not of the collapsible type. Through the air inlet, the atmospheric pressure can automatically balance the pressure inside and outside the cup to achieve consistency. The paint is evenly discharged, and the residual paint is little. The disadvantages are as follows: paint spraying at any angle of 360 degrees cannot be realized. Compared with the soft storage cup 3, the outer cup needs to be thrown away, the thickness of the outer cover is more than that of the soft storage cup 3, resource waste is caused, the cost is high, and the environment pollution is more.

Both of the above prior paint reservoirs (spray cups) have inherent disadvantages.

Also, the prior art closure requires the use of a retaining ring 7 (shown in FIG. 13) for attachment securement when attaching the rigid reservoir cup 2.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, provide spray gun liquid container closing cap and spray gun liquid container, solved the inhomogeneous and many problems of remaining paint of going out that the cup that spouts that contains soft storage cup exists, solved the unable arbitrary angle of the degree that the cup that spouts that contains soft storage cup exists and spray paint and throw away the problem of outer cup extravagant resource, solved the problem that needs the connecting piece when current closing cap installation stereoplasm storage cup.

A seal cover of a spray gun liquid storage device comprises a cup cover, wherein a liquid channel is formed on the cup cover, and an air vent mechanism which allows gas to pass into the storage device in the forward direction and does not allow liquid in the storage device to pass in the reverse direction is arranged on the cup cover.

Further, the vent mechanism includes an intake valve including a vent plate and a seal; the vent plate is formed with a vent opening, and the sealing member moves relative to the vent plate to block or open the vent opening;

preferably, the cup cover and the vent plate are integrally formed.

Further, the sealing element comprises a limiting part, a fixed connecting part and a sealing part; the ventilation plate is provided with a connecting hole, the fixed connecting part penetrates through the connecting hole, and the limiting part and the sealing part are respectively positioned on two sides of the ventilation plate; the seal moves relative to the vent plate to block or unblock the vent.

Further, the sealing element is made of elastic materials;

preferably, the elastic material is: TPU, TPE, TPR, TPV, CPE, plastic and rubber;

more preferably, the stopper portion, the fixing connection portion, and the sealing portion are integrally formed.

Further, the venting mechanism further comprises a blocking member for controlling the on and off of gas being passed through the venting mechanism into the reservoir;

preferably, the on and off of the gas entering the reservoir through the ventilation mechanism is controlled by the relative position change of the barrier and the ventilation plate;

more preferably, the air inlet valve further comprises a shell, and the cup cover, the shell and the vent plate are integrally formed; controlling the on and off of gas entering the reservoir through the venting mechanism in a forward direction by the relative position change of the blocking member and the shell;

more preferably, the barrier is of the plug type or cap type;

more preferably, the blocking piece is connected with the cup cover through a connecting piece;

more preferably, the barrier, the connecting piece and the cup cover are integrally formed.

Furthermore, the cup cover is provided with a plane, one side surface of the vent plate and one side surface of the plane are positioned on the same plane, and the sealing part is simultaneously contacted with the vent plate and the plane to shield the vent hole.

Furthermore, the outer circumference of the cup cover extends outwards and transversely to form a first horizontal ring; the outer edge of the first horizontal ring vertically extends upwards to form a first vertical ring; the upper edge of the first vertical ring extends outwards and transversely to form a second horizontal ring; the outer edge of the second horizontal ring extends vertically downwards to form a second vertical ring for locking the reservoir.

Further, the outer edge of the first horizontal ring extends upwards vertically and downwards simultaneously to form a first vertical ring together; one side of the first vertical ring, which is close to the second vertical ring, forms a flange surrounding the first vertical ring; preferably, the cup cover, the first horizontal ring, the second horizontal ring, the first vertical ring and the second vertical ring are integrally formed through injection molding.

The spray gun liquid container is characterized by further comprising a hard storage cup, wherein the hard storage cup is detachably connected with the sealing cover; preferably, the rigid storage cup is connected to the closure by a second vertical ring.

Furthermore, the container also comprises a soft storage cup which is sleeved in the hard storage cup and used for containing paint; preferably, the hard storage cup has an open or closed cup body.

The utility model has the advantages of as follows:

1. the multifunctional paint box has multiple using modes, and the using modes can be switched freely according to conditions, so that materials and paints are saved.

The paint can be stored using flexible and/or rigid storage cups in such a way that the paint can be stored for a long period of time.

The paint can be sprayed at any angle by using the soft storage cup, and the paint can be sprayed at any angle only by discarding the soft storage cup, so that the material is saved, but more paint is wasted.

The paint is sprayed downwards by using the soft storage cup, the soft storage cup does not shrink in this way, the paint is not wasted, and the soft storage cup only needs to be discarded, so that the material is saved.

Paint was applied down using a rigid storage cup. This approach does not use a soft storage cup, wastes no paint, and requires the hard storage cup to be discarded or cleaned for reuse.

2. The sealing cover can be simultaneously connected with the soft storage cup and the hard storage cup, and the soft storage cup and/or the hard storage cup can be selectively installed according to the using modes, so that the use is convenient and flexible, and the soft storage cup and the hard storage cup can meet various different requirements in use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawing in the following description is only an embodiment of the invention, and that for a person skilled in the art, other embodiments can be derived from the drawing provided without inventive effort.

FIG. 1: the utility model discloses a schematic diagram of one of the ventilation mechanisms;

FIG. 2: the second schematic diagram of the ventilation mechanism of the utility model;

FIG. 3: the third schematic diagram of the ventilation mechanism of the utility model;

FIG. 4: the fourth real schematic diagram of the ventilation mechanism of the utility model;

FIG. 5: the utility model discloses a three-dimensional structure schematic diagram (overlooking view angle) of one of the spray gun liquid storage devices;

FIG. 6: the utility model discloses a three-dimensional structure schematic diagram (upward view angle) of one of the spray gun liquid storage devices;

FIG. 7: the utility model discloses a top view structure schematic diagram of one of the spray gun liquid storage devices;

FIG. 8: the utility model is a schematic sectional structure diagram cut along the C position;

FIG. 9: the utility model has a partial enlarged structure diagram at the position D;

FIG. 10: the second explosion structure of the spray gun liquid storage device of the utility model is a schematic diagram;

FIG. 11: the utility model discloses a schematic three-dimensional structure of a second spray gun liquid container;

FIG. 12: the second top view structure of the spray gun liquid storage device of the utility model is a schematic diagram;

FIG. 13: the second liquid storage device of the spray gun of the utility model is a schematic view of the upward structure;

FIG. 14: the utility model is a schematic sectional structure view cut along the A part;

FIG. 15: the second cross-sectional structure of the spray gun liquid storage device of the utility model is a schematic drawing (with a blocking piece and without a vent cover);

FIG. 16: the second cross-sectional structure of the spray gun liquid storage device of the utility model (without the baffle and with the vent cover);

FIG. 17: the second cross-sectional structure of the spray gun liquid storage device of the utility model is a schematic drawing (without a soft storage cup);

FIG. 18: the utility model is a partial enlarged structure diagram at B;

FIG. 19: the connection structure of the sealing cover and the hard storage cup is shown schematically;

FIG. 20: the utility model has a five-dimensional schematic view of the ventilation mechanism;

FIG. 21: the cross-sectional view of the fifth ventilation mechanism of the utility model (the fourth fixing mode);

FIG. 22: the cross-sectional view of the fifth ventilation mechanism of the utility model (the third fixing mode);

FIG. 23: the utility model has a three-dimensional schematic diagram of the sixth ventilating mechanism;

FIG. 24: the sectional front view of the sixth ventilation mechanism of the utility model is a schematic diagram (open state);

FIG. 25: the sectional view of the sixth ventilation mechanism of the utility model is a schematic view (closed state);

FIG. 26: one of the six schematic sectional side views of the ventilation mechanism of the present invention;

FIG. 27 is a schematic view showing: the second schematic side view of the cross-sectional view of the sixth venting mechanism of the present invention.

Detailed Description

The invention will be further described with reference to the following figures and examples:

reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

embodiment 1: as shown in fig. 1, the present embodiment provides a ventilation mechanism including: an inlet valve 4, said inlet valve 4 allowing gas to pass forward into the reservoir and not allowing liquid in the reservoir to pass backward through the inlet valve 4.

Preferably, the intake valve 4 comprises a breather plate 42 and a seal 43; the vent plate 42 is formed with a vent hole 422, and the sealing member 43 moves relative to the vent plate 42 to block or block the vent hole 422;

this embodiment does not include the housing 41 and the barrier 5 of fig. 1.

When the seal 43 blocks the vent 422, the vent 422 is closed by the seal 43 and gas cannot pass through the gas inlet valve 4 in the forward direction. At this time, the gas inlet valve 4 may be gas at the lower side and liquid at the upper side, and the liquid above the sealing member 43 applies a downward force to the sealing member 43 due to its own weight, so that the sealing member 43 is in close contact with the vent plate 42 to seal the vent 422.

When the sealing member 43 does not shield the vent 422, the air pressure in the space above the sealing member 43 is low, the air pressure in the space below the sealing member 43 is high, the gas below pushes the sealing member 43 upwards at the vent 422 to separate the sealing member 43 from the state of shielding the vent 422, and the gas enters the liquid above the sealing member 43 after passing through the vent 422 and the gap between the vent 422 and the sealing member 43 in sequence.

Embodiment 2: as shown in fig. 1, the present embodiment is a further embodiment based on embodiment 1, and does not include components such as the housing 41 and the barrier 5 in fig. 1.

The seal 43 of the present embodiment includes a stopper portion 431, a fixed connection portion 432, and a seal portion 433; the vent plate 42 is formed with a connection hole 421, the fixed connection part 432 penetrates the connection hole 421, and the stopper part 431 and the sealing part 433 are respectively located at two sides of the vent plate 42; the sealing portion 433 moves relative to the vent plate 42 to block or unblock the vent 422.

Preferably, the fixed connection portion 432 is fixedly connected to the stopper portion 431, and the fixed connection portion 432 is fixedly connected to the sealing portion 433.

When the gas passes through the vent hole 422 to push up the packing 43, the expanded stopper 431 cannot pass through the connection hole 421 and restricts the packing 43 from moving upward away from the vent plate 42. The gas passes through the gap between the vent plate 42 and the seal 43 and then enters the liquid above the intake valve 4 through the gap between the seal 433 and the housing 41.

Embodiment 3: as shown in fig. 1, the present embodiment is a further embodiment based on

embodiment

1 or 2, and does not include the components of the case 41 and the barrier 5 in fig. 1.

The seal 43 is an elastomeric material. The sealing member 43 made of an elastic material can be more closely attached to the air-channeled panel 42, thereby preventing air leakage or liquid leakage from the gap between the air-channeled panel 42 and the sealing member 43.

Preferably, the elastic material is: TPU, TPE, TPR, TPV, CPE, plastic or rubber.

Embodiment 4: as shown in fig. 1, the present embodiment is a further embodiment based on embodiment 3, and does not include components such as the housing 41 and the barrier 5 in fig. 1.

The stopper 431, the fixing connector 432, and the sealing member 433 are integrally formed.

When the fixing device is installed, the tapered and elastic limiting portion 431 can be extruded and deformed to pass through the connecting hole 421, and after passing through the connecting hole 421, the shape is restored, and the limiting portion 431 is limited to leave the connecting hole 421 by the tapered bottom surface.

Embodiment 5: as shown in fig. 1, this embodiment is a further embodiment based on any one of embodiments 1 to 4, which includes barrier 5 in fig. 1.

The venting mechanism further comprises a barrier 5, the barrier 5 being used to control the on and off of gas that is being passed through the venting mechanism into the reservoir;

preferably, the on/off of the gas entering the reservoir through the venting mechanism is controlled by the relative position change of the blocking member 5 and the vent plate 42; the blocking member 5 blocks the passage of gas through the vent 422 of the vent plate 42 by changing the position or stops blocking the passage of gas through the vent 422 of the vent plate 42.

Preferably, the barrier 5 is made of an elastic material.

Embodiment 6: as shown in fig. 1, the present embodiment is a further embodiment based on embodiment 5. The present embodiment does not include the housing 41 and the like in fig. 1.

The blocking member 5 may be a face with an adhesive, and the blocking member 5 blocks the vent 422 by adhering the face of the blocking member 5 with the adhesive to the vent plate 42, so that the gas cannot pass through the vent 422 of the vent plate 42.

The vent 422 can be opened by removing the blocking member 5 from the vent plate 42, and gas can pass through the vent 422.

Preferably, the adhesive on the barrier 5 can be applied repeatedly several times.

Embodiment 7: as shown in fig. 1 to 4, the present embodiment is a further embodiment based on embodiment 5.

The intake valve 4 further includes a housing 41, the vent plate 42 is inside the housing 41, and the housing 41 and the vent plate 42 are integrally formed; controlling the on and off of gas entering the reservoir through the venting mechanism by the relative position change of the barrier 5 and the housing 41;

the barrier 5 is axially translated and/or rotated relative to the housing 41 to block or unblock the vent 422.

Embodiment 8: as shown in fig. 1, the present embodiment is a further embodiment based on embodiment 7. This embodiment includes housing 41 and barrier 5 of fig. 1.

Barrier 5 translates axially relative to housing 41.

The blocking member 5 is inserted into the intake port of the intake valve 4 and/or fitted outside the intake port of the intake valve 4.

Preferably, the blocking member 5 is made of an elastic material, and the blocking member 5 can be in close contact with the housing 41 to prevent air leakage from a gap between the blocking member 5 and the housing 41.

The blocking member 5 is pulled out, and the air inlet of the air inlet valve 4 is contacted with the outside air. The blocking member 5 is inserted or inserted into the housing 41 to block the air inlet of the air inlet valve 4, i.e. the air inlet 422 is not in contact with the air outside the air inlet valve 4.

Embodiment 9: as shown in fig. 4, the present embodiment is a further embodiment based on embodiment 8.

The blocking member 5 includes a blocking member limiting portion 59, a blocking member fixing connection portion 58 and a blocking member sealing portion 57, and two ends of the blocking member fixing connection portion 58 are respectively fixedly connected with the blocking member limiting portion 59 and the blocking member sealing portion 57. Preferably, the barrier stopper 59, the barrier fixing connection 58 and the barrier sealing 57 are integrally formed.

The barrier vent plate 56 is fixedly connected to the housing 41 inside the housing 41, the barrier vent plate 56 is formed with a barrier vent 561, the barrier vent plate 56 is formed with a barrier connection hole 562, and the barrier vent plate 56 is closer to the intake port of the intake valve 4 than the vent plate 42. The barrier securing connection 58 moves within the barrier connection aperture 562 and within the barrier connection aperture 562. When the device is installed, the conical and elastic blocking member limiting part 59 can be extruded and deformed to pass through the blocking member connecting hole 562, and the blocking member limiting part 59 is limited to move downwards by the conical bottom surface after the blocking member connecting hole 562 returns to the original shape. Thereby preventing barrier 5 from completely disengaging housing 41 causing barrier 5 to be lost.

Preferably, the blocking member sealing portion 57 is fixedly connected to the pulling member 50.

In use, the inlet of the inlet valve 4 is down, the outlet is up, the barrier 5 is down and the inlet valve 4 is up.

At this time, liquid is present above the air intake valve 4 (at the air outlet) and gas is present below the air intake valve 4 (at the air outlet). The liquid presses the sealing member 43 against the vent plate 42 by its own weight to close the vent 422, so that the liquid does not flow downward through the intake valve 4.

In the sealed state, the blocking member sealing portion 57 is inserted into or fitted over the intake port of the intake valve 4 to isolate the intake port of the intake valve 4 from the outside air. When the air inlet blocking device is used, the pulling piece 50 is pulled to drive the blocking piece 5 to move downwards, a gap is formed between the blocking piece sealing part 57 and the air inlet of the air inlet valve 4, and the air inlet of the air inlet valve 4 is in contact with the outside air. The pulled-out blocking member 5 continues to move downward due to gravity, and the blocking member stopper 59 limits the downward movement stroke of the blocking member 5. There is a pressure difference above and below the air intake valve 4, the gas enters the air vent 422 through the gap between the blocking member sealing part 57 and the air inlet of the air intake valve 4 and the air inlet of the air valve 4 in sequence, the gas pushes up the sealing member 43 through the air vent 422, and the expanded limiting part 431 cannot pass through the connecting hole 421 and moves upward from the limiting sealing member 43 to leave the vent plate 42. After passing through the gap between the ventilation plate 42 and the sealing member 43, the gas enters the gas outlet of the intake valve 4 through the gap between the sealing member 43 and the housing 41, and enters the liquid above the intake valve 4 from the gas outlet, so that the gas pressure difference above and below the intake valve 4 is balanced.

Embodiment 10: as shown in fig. 3, the present embodiment is a further embodiment based on embodiment 7.

The blocking member 5 rotates relative to the housing 41.

Preferably, a cover plate is formed at the air inlet of the intake valve 4, the cover plate is formed with an air inlet opening 411, and the air inlet of the intake valve 4 is fed from the air inlet opening 411. The second opening 53 is formed at the end face of the blocking member 5, and the inner side of the end face of the blocking member 5 is in contact with the outer side of the cover plate.

Preferably, the blocking member 5 is made of an elastic material to seal the air inlet opening 411.

In the sealed state, the air inlet opening 411 and the second opening 53 do not overlap, and the blocking member 5 completely blocks the air inlet opening 411. The rotation blocking member 5, the intake opening 411 and the second opening 53 overlap, so that the intake opening 411 is in contact with the external gas, and the intake port of the intake valve 4 is in contact with the external gas.

Embodiment 11: as shown in fig. 2, the present embodiment is a further embodiment based on embodiment 7. The threads of barrier 5 and housing 41 are not shown in fig. 2. The barrier 5 does not include the first opening 52 in fig. 2.

Blocking member 5 is axially translated and rotated relative to housing 41, i.e. blocking member 5 simultaneously performs both axial and circumferential movements relative to housing 41.

The blocking piece 5 is inserted into the air inlet of the air inlet valve 4 and is in threaded connection or is sleeved outside the air inlet of the air inlet valve 4 and is in threaded connection.

Preferably, the blocking member 5 or the inlet valve 4 is fitted with a sealing ring 55, said sealing ring 55 being arranged between the blocking member 5 and the inlet valve 4 for sealing the gap of the blocking member 5 or the inlet valve 4.

The blocking member 5 is completely unscrewed from the intake valve 4 and the intake port of the intake valve 4 is in contact with the outside air. After the blocking piece 5 is in threaded connection with the air inlet valve 4, the air inlet of the air inlet valve 4 is isolated from outside air.

Embodiment 12: as shown in fig. 2, the present embodiment is a further embodiment based on embodiment 11. The threads of barrier 5 and housing 41 are not shown in fig. 2.

The blocking member 5 defines a first opening 52.

The blocking member 5 is rotated to move the blocking member 5 downward such that the first opening 52 is beyond the intake port of the intake valve 4 and the intake port of the intake valve 4 is in contact with the outside air. After gas enters the inlet of the inlet valve 4 from the first opening 52, the gas pushes up the seal 43 through the vent 422. Rotating the first opening 52 upward so that the first opening 52 comes above the intake port of the intake valve 4; preferably, the gasket 55 contacts the housing 41 to seal the inlet of the intake valve 4.

Embodiment 13:

as shown in fig. 23 to 27, the present embodiment is a further embodiment based on embodiment 7. The venting mechanism comprises an inlet valve 4 and a blocking member 5, the inlet valve 4 comprising a seal 43, the inlet valve 4 being movable within the inlet valve 4 relative to the inlet valve 4 to open or close a vent 422 of the inlet valve 4, the blocking member 5 being adapted to control the opening and closing of gas that is being passed through the venting mechanism into the closure of the liquid reservoir of the spray gun.

Preferably, said blocking member 5 opens or closes the inlet valve 4 in connection with the rotation of the inlet valve 4.

Preferably, the intake valve 4 comprises an air vent plate 42 and an outer housing 44, the air vent plate 42 is formed with an air vent 422, and the sealing member 43 moves relative to the air vent plate 42 to open or close the air vent 422; the blocking member 5 is arranged in the outer shell 44 and is connected with the outer shell 44 in a rotating way;

preferably, the axis of rotation of said barrier 5 is not parallel to the direction of movement of the seal 43;

more preferably, the rotation axis of the blocking member 5 is perpendicular to the moving direction of the sealing member 43.

Preferably, the sealing member 43 includes a stopper portion 431, a fixed connection portion 432, and a sealing portion 433; the vent plate 42 is formed with a connection hole 421, the fixed connection part 432 penetrates the connection hole 421, and the stopper part 431 and the sealing part 433 are respectively located at two sides of the vent plate 42; the sealing part 433 moves relative to the vent plate 42 to open or close the vent 422;

preferably, the stopper 431, the fixed connection part 432 and the sealing part 433 are integrally formed and made of an elastic material;

more preferably, the elastic material is: TPU, TPE, TPR, TPV, CPE, plastic or rubber.

Preferably, the barrier 5 further comprises an outer fixing portion 5c, the outer fixing portion 5c being outside the inner sealing portion 5a and the outer sealing portion 5 b; the outer fixing part 5c is rotatably connected with the outer shell 44, and the outer fixing part 5c is fixed with the outer shell 44 through interference fit.

Preferably, the outer housing 44 is formed with a first hinge portion 442, the outer fixing portion 5c is formed with a second hinge portion 532, and the first hinge portion 442 and the second hinge portion 532 are connected to hinge the outer housing 44 and the outer fixing portion 5 c;

preferably, the outer fixing portion 5c is formed with a second vent 431, and the second vent 431 is communicated with the gas outside the intake valve 4 when the barrier 5 is opened.

When the liquid is above the sealing portion 433 and the gas is below the sealing portion 433, the sealing portion 433 is pressed against the vent plate 42 by the gravity of the paint to shield and close the vent 422, thereby preventing the paint from flowing out downward from the vent 422.

The intake valve 4 further includes a housing 41, the vent 422 is communicated with the inside of the housing 41, the barrier 5 includes an inner sealing portion 5a penetrating the inside of the housing 41 to seal the opening of the housing 41 and/or an outer sealing portion 5b sleeved outside the housing 41 to seal the opening of the housing 41, and both the inner sealing portion 5a and the outer sealing portion 5b are in interference fit or transition fit with the housing 41.

Preferably, the interference of the inner sealing portion 5a is greater than that of the outer sealing portion 5b, and the height of the inner sealing portion 5a is smaller than that of the outer sealing portion 5 b.

Preferably, the outer sealing part 5b is formed with a first vent 421 for gas to pass through, and the first vent 421 is communicated with the gas outside the gas inlet valve 4 when the barrier 5 is opened; the outer fixing portion 43 is formed with a second vent 431, the second vent 431 communicating with the atmosphere outside the intake valve 4 when the barrier 5 is opened; the first vent 421 and the second vent 431 are communicated.

Preferably, the barrier 5 is formed with a depressed pressing portion 501.

More preferably, the outer housing 44 is formed with a pressing groove 231, and the pressing groove 231 and the pressing portion 501 are on the same side of the first hinge portion 442 and the second hinge portion 532;

preferably, the housing 41, the vent plate 42 and the outer housing 44 are integrally formed and made of an elastic material; preferably, the inner sealing portion 5a, the outer sealing portion 5b and the outer fixing portion 43 are integrally formed and made of an elastic material; the elastic material is PE, PP, PC, PVC, PPR, abs plastic, PS plastic, PMMA plastic, POM plastic, PA plastic, PPO plastic, PSU plastic, PTFE plastic, ASA plastic, PPS plastic, ETFE plastic, epoxy resin, organic silicon plastic or rubber.

The housing 41 is provided to further seal the intake valve 4, and external air must first be sealed by the interference fit between the outer fixing portion 43 and the outer housing 44 and then be sealed by the interference fit between the inner sealing portion 5a and the housing 41 to enter the vent 22. The outer seal 5b functions to fix the barrier 5 to the housing 1 and to maintain the movement locus of the barrier 5 when it rotates.

The inner seal portion 5a, the outer seal portion 5b, and the outer fixing portion 43 are deformed by being pressed against the housing 41 and the outer housing 44 when the barrier 5 is opened or closed.

Embodiment 14

As shown in fig. 20 to 22, the vent mechanism includes a seal member 43, and the vent mechanism includes the seal member 43, and the seal member 43 opens and closes the vent mechanism by changing the shape.

Preferably, the sealing member 43 is made of an elastic material, a plurality of openings 433a that can change in size by elastic deformation are formed in the sealing member 43, and the sealing member 43 opens or closes the ventilation mechanism by opening and closing the openings 433 a.

Preferably, the sealing member 43 includes a sealing portion 433, the opening 433a is formed on the sealing portion 433, the sealing portion 433 is a hollow cone, and the sealing portion 433 is a rotator.

Preferably, the generatrix of the sealing portion 433 is curved in the direction of the central axis of the sealing portion 433.

Preferably, the openings 433a are circumferentially arranged along a central axis of the sealing part 433. Preferably, the openings 433a are arranged along the central axis of the sealing part 433 in a uniform circumferential arrangement

Preferably, the sealing member 43 further includes a stopper portion 431, and the sealing portion 433 is integrally formed with the stopper portion 431.

The working principle is as follows:

when the paint is above the ventilation mechanism, the paint is pressed above the side surface of the sealing member 43 by its own weight, so that the sealing portion 433 is deformed, and the generatrix of the sealing portion 433 is further bent toward the central axis direction of the sealing portion 433, so that all the openings 433a are closed (that is, the sealing portions 433 on both sides of the openings 433a are pressed together to close the sealing portions 433), and the paint is prevented from flowing out downward through the sealing portions 433.

When the air pressure outside the tip of the sealing part 433 is low and the air pressure at the bottom end of the sealing part 433 is high, the opening 433a is pushed open by the air (i.e., the sealing part 433 is elastically deformed by force applied to make the sealing part 433 larger), so that the external air can pass through the opening 433 a.

First fixing mode of the seal 43:

the seal portion 433 of the seal 43 is directly bonded and fixed.

Fixing manner of the seal 43:

the stopper 431 of the packing 43 is directly bonded and fixed.

Fixing manner of the seal 43 is three:

the ventilation mechanism further comprises a shell 41, the shell 41 is fixedly connected with the bottom of the cup body 1, and the limiting part 431 of the sealing element 43 is arranged in the shell 41 and is clamped and fixed with the shell 41.

Fixing manner of the seal 43 is four:

the ventilation mechanism further comprises a shell 41 and a fixing piece 8, wherein the fixing piece 8 is provided with a through hole, and the fixing piece 8 is fixedly connected with the shell 41 and used for pressing and fixing the limiting part 431 of the sealing piece 43 in the shell 41.

The stopper 431 is a projection of the seal 43. Preferably, the stopper 431 is a flange. The case 41 is a hollow cylinder having an inner boss formed at one end thereof.

Preferably, the fixing member 8 is fixed to the housing 41 by clipping, bonding or welding.

Example two:

embodiment 15:

as shown in fig. 5 to 12 and 14 to 19, the present embodiment provides a spray gun liquid reservoir cover, which comprises a cup cover 1, wherein a liquid channel 11 is formed on the cup cover 1, and a ventilation mechanism which allows gas to pass into the reservoir in a forward direction and does not allow liquid in the reservoir to pass in a reverse direction is arranged on the cup cover 1.

The vent mechanism of this embodiment can be used with the vent mechanisms of all of the embodiments of example one.

Preferably, the cup cover 1 is funnel-shaped, and the liquid channel 11 is arranged at the narrow opening end of the funnel-shaped.

When the embodiment adopts the embodiment without the housing 41 in the first embodiment, the vent plate 42 is integrally formed with the cup lid 1.

When the embodiment adopts the embodiment that the housing 41 is arranged in the first embodiment, the housing 41 is integrally formed with the cup lid 1.

Embodiment 16:

as shown in fig. 8 to fig. 10, the present embodiment is a further embodiment based on embodiment 15.

The cup cover 1 is formed with a plane 10, one side surface of the vent plate 42 and one side surface of the plane 10 are located on the same plane, and the sealing part 433 is simultaneously contacted with the vent plate 42 and the plane 10 to shield the vent hole 422.

As shown in fig. 9, the liquid flows out in a direction in which the liquid flows into the vent 422 after passing through the gap between the seal portion 433 and the flat surface 10, and finally flows out of the vent 422. Since the sealing portion 433 is outside the housing 41, the area of the sealing portion 433 may be larger than the cross-sectional area of the inner cavity of the housing 41, so that the area where the sealing portion 433 is attached is increased, and the gap between the sealing portion 433 and the plane 10 may be set to be long, thereby increasing the flowing distance of the liquid before flowing into the vent 422, preventing the liquid from flowing out, and increasing the sealing performance of the intake valve 4.

As shown in fig. 1 to 4 and 18, the vent plate 42 and the sealing portion 433 are located inside the housing 41. The area of the sealing portion 433 is only equal to the sectional area of the inner cavity of the housing 41 to the maximum, the area of the sealing portion 433 attached to the vent plate 42 is small, and the gap between the sealing portion 433 and the vent plate 42 is limited and cannot be lengthened, so that the flow distance of the liquid before flowing into the vent 422 is short, the liquid flows out more easily, and the sealing performance of the intake valve 4 is poor.

The vent 422 of fig. 9 is located at the edge of the vent plate 42, and the vent 422 is composed of the vent plate 42 and the housing 41 or the plane 10. Therefore, in fig. 9, when the intake valve 4 is closed, the part of the seal 433 between the outer edge of the seal 433 and the vent 422 is adhered only to the surface of the flat surface 10. When the vent plate 42 of fig. 9 is the vent plate 42 in which the vent holes 422 are completely located in the vent plate 42 as shown in fig. 1 to 4 and 18, a portion of the sealing portion 433 between the outer edge of the sealing portion 433 and the vent hole 422 can be attached to the surface of the plane 10 and the vent plate 42 at the same time, thereby further increasing the attachment area of the sealing portion 433, increasing the distance of the liquid before flowing into the vent hole 422, and increasing the sealing performance of the intake valve 4.

Embodiment 17:

as shown in fig. 5 to 12 and fig. 14 to 19, the present embodiment is a further embodiment based on embodiment 15 or embodiment 16.

The blocking piece 5 is connected with the cup cover 1 through a connecting piece 51;

preferably, one end of the connecting piece 51 is fixedly or rotatably connected with the barrier piece 5, and the other end is fixedly or rotatably connected with the cup cover 1

More preferably, the connecting member 51 is made of an elastic material.

More preferably, the barrier piece 5, the connecting piece 51 and the cup cover 1 are integrally formed;

the connector 51 is used for limiting the displacement distance of the blocking piece 5 and the cup cover 1, and the blocking piece 5 is prevented from being completely separated from the cup cover 1 to cause the blocking piece 5 to be lost.

Embodiment 18:

as shown in fig. 14 to fig. 18, the present embodiment is a further embodiment based on any one of embodiment 15 to embodiment 17.

The liquid passage 11 is connected to a liquid passage seal 6, and the liquid passage seal 6 opens or closes the liquid passage 11.

Preferably, the liquid passage seal 6 is made of an elastic material.

Preferably, the liquid passage seal 6 is connected to the lid 1 by a liquid passage seal connection 61.

Preferably, the liquid channel sealing element connecting piece 61 is made of a bendable material or structure, one end of the liquid channel sealing element connecting piece 61 is fixedly connected with the liquid channel sealing element 6, and the other end of the liquid channel sealing element connecting piece 61 is fixedly connected with the cup cover 1.

The liquid channel seal connecting piece 61 is used for limiting the displacement distance of the liquid channel seal 6 and the cup cover 1, and the liquid channel seal connecting piece 61 is prevented from being completely separated from the cup cover 1 to cause the loss of the liquid channel seal 6.

Embodiment 19:

as shown in fig. 5 to 10, the present embodiment is a further aspect based on any one of embodiment 15 to embodiment 18.

The outer circumference of the cup cover 1 extends outwards and transversely to form a first horizontal ring 15; the outer edge of the first horizontal ring 15 extends upwards vertically to form a first vertical ring 12; the upper edge of the first vertical ring 12 extends outwards and transversely to form a second horizontal ring 14; the outer edge of the second horizontal ring 14 extends vertically downwards to form a second vertical ring 13 for locking the reservoir.

The first vertical ring 12 and the first horizontal ring 15 extending vertically upwards serve to sink the funnel-shaped lid 1, so as to reduce the volume occupied by the closure for transportation and storage.

Embodiment 20:

as shown in fig. 5 to fig. 10, the present embodiment is a further embodiment based on embodiment 19.

Preferably, the outer edge of the first horizontal ring 15 extends vertically upwards and simultaneously extends downwards to form a first vertical ring 12; a flange 121 surrounding the first vertical ring 12 is formed on one side of the first vertical ring 12 close to the second vertical ring 13, and the flange 121 is used for clamping and fixing the soft storage cup 3; preferably, the cup cover 1, the first horizontal ring 15, the second horizontal ring 14, the first vertical ring 12 and the second vertical ring 13 are formed in an injection molding and integral mode.

In use, the second vertical ring 13, which is formed with an internal thread, is screwed to the rigid storage cup 2, which is formed with an external thread. The flange 121 of the first vertical ring 12 is snap-fitted to the flexible storage cup 3.

Embodiment 21:

as shown in fig. 11 to fig. 18, the present embodiment is a further aspect based on any one of embodiment 15 to embodiment 18.

A first vertical ring 12 is formed at the inner side below the cup cover 1; a second vertical ring 13 for locking the container is formed on the outer side below the cup cover 1.

Preferably, a flange is formed on the outer side of the first vertical ring 12, and the flange is clamped and fixed with the soft storage cup 3; preferably, the cup cover 1, the first vertical ring 12 and the second vertical ring 13 are integrally formed by injection molding.

Preferably, the container comprises a hard storage cup 2, and the hard storage cup 2 is detachably connected with the cover; preferably, the rigid reservoir cup 2 is connected to the closure by a second vertical ring 13.

Embodiment 22:

as shown in fig. 19, the present embodiment is a further embodiment based on any one of embodiments 15 to 18.

A first vertical ring 12 is formed on the inner side below the cup cover 1.

Preferably, a flange is formed outside the first vertical ring 12, and the flange is clamped and fixed with the soft storage cup 3.

Example three:

embodiment 23:

as shown in fig. 5 to 19, the present embodiment provides a spray gun liquid reservoir, which comprises a cover and a reservoir, wherein the cover comprises a cup cover 1, a liquid channel 11 is formed on the cup cover 1, and the spray gun liquid reservoir is characterized in that a ventilation mechanism which allows gas to pass into the reservoir in a forward direction and does not allow liquid in the reservoir to pass in a reverse direction is arranged on the cup cover 1.

The closure of this embodiment can be used with the closures of all of the embodiments of example two.

Embodiment 24:

as shown in fig. 5 to fig. 19, the present embodiment is a further embodiment based on embodiment 23.

The container comprises a hard storage cup 2, and the hard storage cup 2 is detachably connected with a cover. The hard storage cup 2 is closed, namely, the bottom surface and the side surface of the hard storage cup 2 are not provided with openings, and only the joint of the upper part of the hard storage cup 2 and the sealing cover is provided with an opening.

In a closure with a second vertical ring 13: the rigid reservoir cup 2 is connected to the closure by means of a second vertical ring 13.

Preferably, the second vertical ring 13 is formed with an internal thread, the hard reservoir cup 2 is formed with an external thread, and the hard reservoir cup 2 is screw-coupled to the second vertical ring 13.

In closures without the second vertical ring 13: the cup cover further comprises a retaining ring 7, the retaining ring 7 is in threaded connection with the hard storage cup 2, the retaining ring 7 is in contact with the upper portion of the cup cover 1, and the retaining ring 7 and the hard storage cup 2 respectively limit the axial movement of the cup cover 1 in two directions.

The first use mode is as follows: paint storage Using rigid storage cups 2

When the hard reservoir cup 2 is used to store paint, the hard reservoir cup 2 is of a closed type in which the hard reservoir cup 2 is closed.

The hard storage cup 2 is detachably connected with the cup cover 1 through threads or other forms. When the hard storage cup 2 is closed, the cup cover 1 and the hard storage cup 2 form a closed cavity which is isolated from the outside air.

The second use mode: spray paint using rigid storage cup 2

As shown in FIG. 17, in this method of use, the rigid storage cup 2 is closed at the bottom and does not include the vent cap 21 shown in FIG. 17. The blocking member 5 is adjusted so that the blocking member 5 no longer seals the intake valve 4, and the intake port of the intake valve 4 communicates with the outside. The interior of the closed type rigid storage cup 2 is sealed from the outside air, and the spray gun is connected to the liquid passage 11. The soft storage cup 3 is not installed. The container is rotated until the lid 1 is facing downwards and the rigid storage cup 2 is facing upwards.

At this time, as the paint is ejected from the spray gun, a vacuum is generated in the hard cup 2 above the air intake valve 4, the gas enters the air vent 422 through the air intake port of the air intake valve 4, the gas pushes up the packing 43 through the air vent 422, and the expanded stopper 431 cannot pass through the connection hole 421 and moves upward from the packing 43 to be separated from the vent plate 42. The gas passes through the gap between the ventilation plate 42 and the sealing member 43, then enters the gas outlet of the intake valve 4 through the gap between the sealing member 43 and the housing 41, and enters the rigid storage cup 2 above the intake valve 4 from the gas outlet, thereby balancing the pressure above and below the intake valve 4. At this time, although the air intake valve 4 is open, paint does not flow downward from the air intake valve due to the air flow from the bottom up.

Embodiment 25:

The container comprises a hard storage cup 2, and the hard storage cup 2 is detachably connected with the sealing cover; preferably, the rigid reservoir cup 2 is connected to the closure by a second vertical ring 13.

The container also comprises a soft storage cup 3, and the soft storage cup 3 is sleeved in the hard storage cup 2 and is used for containing paint.

Preferably, the body of the rigid storage cup 2 is open or closed. The hard storage cup 2 is of a closed type, namely, the bottom surface and the side surface of the hard storage cup 2 are not provided with openings, and only the joint of the upper part of the hard storage cup 2 and the sealing cover is provided with an opening. The hard storage cup 2 is open, that is, the bottom and/or the side of the hard storage cup 2 is/are provided with an opening to balance the air pressure inside and outside the hard storage cup 2 and reduce the material and weight of the hard storage cup 2.

Preferably, the bottom surface of the open type hard storage cup 2 is provided with a ventilation opening 20; preferably, the side of the open rigid storage cup 2 is provided with a side vent opening 23.

The use method is as follows: flexible storage cup 3 for storing paint

The hard storage cup 2 has an open or closed cup body.

As shown in fig. 14, 15 and 18, the flexible storage cup 3 contains paint. The liquid passage seal 6 closes the liquid passage 11 so that gas does not enter the soft reservoir cup 3 inside through the liquid passage 11. While closing the inlet valve 4 with the barrier 5.

The soft storage cup 3 is connected with the cup cover 1 in a detachable connection mode such as clamping connection, and the cup cover 1 and the soft storage cup 3 are hermetically sealed. So that the paint can be stored and preserved in the flexible storage cup 3. The rigid storage cup 2 serves as a grip and support.

The use method is as follows: spray paint with fixed angle by using soft storage cup 3

The hard storage cup 2 has an open or closed cup body.

As shown in fig. 8 and 16, the blocking member 5 is adjusted so that the blocking member 5 no longer closes the intake valve 4, and the intake port of the intake valve 4 communicates with the outside. The rigid storage cup 2 is not used. The spray gun is connected to the liquid passage 11. The container is rotated until the cover 1 faces downwards and the soft storage cup 3 faces upwards. The soft storage cup 3 is fixed on the cup cover 1, and the soft storage cup 3 and the cup cover 1 are sealed in an airtight mode.

At this time, as the paint is ejected from the spray gun, a vacuum is generated in the soft storage cup 3 above the air intake valve 4, the gas enters the air vent 422 through the air intake port of the air intake valve 4, the gas pushes up the packing 43 through the air vent 422, and the expanded stopper 431 cannot pass through the connection hole 421 and moves upward from the packing 43 to be separated from the vent plate 42. The gas passes through the gap between the ventilation plate 42 and the seal 43, then enters the gas outlet of the intake valve 4 through the gap between the seal 43 and the housing 41, and enters the soft storage cup 3 above the intake valve 4 from the gas outlet, thereby balancing the pressure above and below the intake valve 4. At this time, although the air intake valve 4 is open, paint does not flow downward from the air intake valve due to the air flow from the bottom up. The rigid storage cup 2 serves as a grip and support.

The using mode is as follows: spray paint at any angle by using a soft storage cup 3

The hard storage cup 2 is an open type or the hard storage cup 2 is not installed.

As shown in fig. 15, the vent opening 20 is opened to allow the interior of the rigid storage cup 2 to communicate with the outside air. The blocking member 5 closes the inlet valve 4. The spray gun is connected to the liquid passage 11. The soft storage cup 3 is fixed on the cup cover 1, and the soft storage cup 3 and the cup cover 1 are sealed in an airtight mode.

At this time, as the paint is ejected from the spray gun, the soft storage cup 3 made of soft plastic is continuously contracted toward the liquid passage 11. In this way, the reservoir can be rotated at any angle and paint can be sprayed from the spray gun. The soft storage cup 3 can be discarded after use.

When the body of the rigid storage cup 2 is of the closed type, the lid may be attached only to the rigid storage cup 2, and used in the manner of embodiment 21 in the manner of the second embodiment.

Embodiment 26:

as shown in fig. 13 to fig. 18, the present embodiment is a further embodiment based on embodiment 25.

The hard storage cup 2 is of an open type, and the hard storage cup 2 is provided with a ventilation opening 20 only on the bottom surface, and the ventilation opening 20 is detachably connected with a ventilation cover 21.

When the vent cap 21 is attached to the vent opening 20, the vent cap 21 closes the bottom of the rigid storage cup 2, corresponding to a closed type rigid storage cup 2. This time, any of the methods from one to four can be used.

When the vent cover 21 is removed from the vent opening 20, the bottom of the rigid storage cup 2 is open, corresponding to the open type rigid storage cup 2. At this time, any one of the three to five methods may be used.

Embodiment 27:

as shown in fig. 8 to fig. 10, the present embodiment is a further embodiment based on embodiment 25 or 26.

The open top edge of the soft cup 3 forms a support rim 31.

A supporting edge 31 is formed at the periphery of the upper port of the soft storage cup 3, and a pressing edge ring 22 is formed at the upper port of the hard storage cup 2. When the soft storage cup 3 is fixed, the support edge 31 is arranged between the second horizontal ring 14 and the binder 22 of the hard storage cup 2, and the second horizontal ring 14 and the binder 22 hold the support edge 31 of the soft storage cup 3 in a pressed manner. The soft storage cup 3 can be more reliable than just being fixed by clamping by compressing and fixing, and is not easy to drop.

The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.

Claims

1. Spray gun liquid storage ware closing cap, including bowl cover (1), be formed with liquid channel (11) on bowl cover (1), characterized by be provided with on bowl cover (1) and allow the gas forward to pass through into the reservoir and not allow the liquid backward pass through of the interior of reservoir aeration mechanism.

2. A spray gun liquid reservoir cover according to claim 1, characterized in that the air venting mechanism comprises an air inlet valve (4), the air inlet valve (4) comprising an air vent plate (42) and a seal (43); the vent plate (42) is formed with a vent opening (422), and the seal (43) moves relative to the vent plate (42) to block or unblock the vent opening (422).

3. A spray gun liquid reservoir cover according to claim 2, characterized in that the seal (43) comprises a stopper portion (431), a fixed connection portion (432) and a sealing portion (433); the ventilation plate (42) is provided with a connecting hole (421), the fixed connecting part (432) penetrates through the connecting hole (421), and the limiting part (431) and the sealing part (433) are respectively positioned at two sides of the ventilation plate (42); the seal (433) moves relative to the vent plate (42) to block or unblock the vent (422).

4. A spray gun liquid reservoir cover according to claim 2, characterized in that the seal (43) is an elastomeric material.

5. A spray gun liquid reservoir closure as claimed in claim 2, characterized in that the cup lid (1) and vent plate (42) are integrally formed.

6. The spray gun liquid reservoir cover of claim 4, wherein the resilient material is: TPU, TPE, TPR, TPV, CPE, plastic or rubber.

7. A spray gun liquid reservoir cover according to claim 3, characterized in that the stopper portion (431), the fixed connection portion (432) and the sealing portion (433) are integrally formed.

8. A spray gun liquid reservoir cover according to claim 3, characterized in that the cup cover (1) is formed with a flat surface (10), a side surface of the vent plate (42) is located on the same plane as a side surface of the flat surface (10), and the sealing portion (433) is in contact with both the vent plate (42) and the flat surface (10) to shield the vent port (422).

9. A spray gun liquid reservoir closure as claimed in any one of claims 1 to 8, characterized in that the outer circumference of the cup lid (1) extends laterally outwardly to form a first horizontal ring (15); the outer edge of the first horizontal ring (15) extends upwards vertically to form a first vertical ring (12); the upper edge of the first vertical ring (12) extends outwards and transversely to form a second horizontal ring (14); the outer edge of the second horizontal ring (14) extends vertically downwards to form a second vertical ring (13) used for locking the reservoir.

10. A spray gun liquid reservoir cover according to claim 9, characterized in that the outer edge of the first horizontal ring (15) extends vertically upwards while extending downwards, together forming a first vertical ring (12); the side of the first vertical ring (12) close to the second vertical ring (13) forms a flange (121) surrounding the first vertical ring (12).

11. A spray gun liquid reservoir closure as claimed in claim 10, characterized in that the cup lid (1) is injection moulded in one piece with a first horizontal ring (15), a second horizontal ring (14), a first vertical ring (12) and a second vertical ring (13).

12. A spray gun liquid reservoir closure according to any one of claims 2 to 8, characterized in that the venting means further comprises a barrier (5), said barrier (5) being adapted to control the on and off of gas entering the reservoir through the venting means in a forward direction.

13. A spray gun liquid reservoir cover according to claim 12, characterized in that the on/off of gas entering the reservoir positively through the venting mechanism is controlled by a change in the relative position of the baffle (5) and the vent plate (42).

14. A spray gun liquid reservoir closure according to claim 12, characterized in that the air inlet valve (4) further comprises a housing (41), the lid (1), housing (41) and vent plate (42) being integrally formed; the on and off of the gas entering the reservoir through the venting mechanism is controlled by the relative position change of the blocking member (5) and the shell (41).

15. Spray gun liquid reservoir cover according to claim 12, characterized in that the barrier (5) is of the plug type or of the cap type.

16. A spray gun liquid reservoir closure as claimed in claim 12, characterized in that the barrier (5) is connected to the lid (1) by a connection (51).

17. A spray gun liquid reservoir closure as claimed in claim 16, characterized in that the barrier (5), the connecting member (51) and the lid (1) are integrally formed.