WO2021213020A1

WO2021213020A1 - Spray gun liquid storage cup and spray gun liquid storage device using same

Info

Publication number: WO2021213020A1
Application number: PCT/CN2021/079436
Authority: WO
Inventors: 肖云
Original assignee: 青岛汉柏塑料科技有限公司
Priority date: 2020-04-22
Filing date: 2021-03-06
Publication date: 2021-10-28
Also published as: CN212732648U

Abstract

Disclosed are a spray gun liquid storage cup and a spray gun liquid storage device using same. The spray gun liquid storage cup comprises a cup body (1); the cup body (1) is provided with a ventilation mechanism (3) which allows gas to pass in a forward direction to enter the cup body (1) and does not allow a liquid in the cup body (1) to pass in a reverse direction; the ventilation mechanism (3) comprises a sealing member (32); the sealing member (32), by means of changing the shape thereof, opens the ventilation mechanism (3); and the sealing member (32), by means of changing the shape thereof, closes the ventilation mechanism (3). According to the spray gun liquid storage cup, elastic deformation can be generated along with paint gravity or air pressure, and the sealing member (32) is thus automatically closed or opened, the member of staff operating same does not need to manually open or close the ventilation mechanism (3), and the problem whereby the member of staff operating same needs to manually open and close a cup cover (2) is thus solved; and the automatic opening type ventilation mechanism (3) solves the problem whereby paint leaks out of same or the cup body (1) is broken due to the fact that the member of staff operating same forgets to operate the ventilation mechanism (3).

Description

Spray gun liquid storage cup and spray gun liquid reservoir

Technical field

The utility model relates to a spray gun liquid storage cup and a spray gun liquid reservoir.

Background technique

At present, the spray gun liquid reservoir on the market, when the spray gun is connected to spray paint, the liquid inside the storage cup will continue to decrease, which will cause the outside air pressure difference inside the spray gun liquid reservoir to continue to increase, which will cause the storage cup to rupture due to force. The paint in the cup flows out.

The existing method for balancing the pressure difference between the inside and the outside of the spray gun liquid reservoir is to provide a vent hole through the bottom or the wall of the storage cup, and the vent hole is detachably connected to the lid. When the storage cup is turned upside down for painting, the lid is opened so that the vent can ventilate and constantly balance the air pressure difference.

However, the above method has the problem of requiring the staff to manually open and close the cover, and the operation is complicated and time-consuming. If the staff forget to close the lid when storing the paint, it will cause the paint to leak and cause losses; if the staff forget to open the lid during painting, the pressure difference between the inside and outside of the cup will be too large, causing the cup to break.

Utility model content

The utility model aims to solve the above problems, provides a spray gun liquid storage cup and a spray gun liquid reservoir, solves the problem of requiring workers to manually open and close the lid, and solves the problem of paint leakage caused by forgetting to close the lid.

The spray gun liquid storage cup includes a cup body, the cup body is provided with a vent mechanism that allows gas to pass into the cup body in the forward direction and does not allow the liquid in the cup body to pass through in the reverse direction, the vent mechanism includes a seal, and the seal The venting mechanism is opened by the change of shape, and the sealing member closes the venting mechanism by the change of shape.

Preferably, the sealing member is made of elastic material, and a plurality of openings that can be changed in size by elastic deformation are formed on the sealing member, the sealing member opens the venting mechanism by opening the opening, and the sealing member passes through the opening To close the ventilation mechanism.

Preferably, the sealing member includes a pointed sealing portion protruding upward, and the opening is formed on the sealing portion.

Preferably, the venting mechanism further includes a hollow housing, the sealing member is in the housing and is fixedly connected to the housing, a shielding portion is formed above the housing, and the shielding portion is located above the opening and shields each opening , The shielding part is formed with a through hole.

Preferably, the sealing part is a hollow cone; the sealing part is a revolving body; and the opening is a cut extending downward from the top end of the sealing part.

Preferably, the openings are cuts along the generatrix of the sealing part, and the openings are evenly distributed along the center axis of the sealing part.

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

Preferably, two sides of the sealing portion are respectively formed with side surfaces extending upward and inward, and an opening is formed at the intersection of the two side surfaces, and the opening is a linear cut.

Preferably, the casing is fixedly connected to the bottom surface of the cup body, the sealing member further includes a fixing portion, the sealing portion and the fixing portion are integrally formed, and the fixing portion is fixedly connected with the casing.

Preferably, the shielding portion is formed with a plurality of through holes that are uniformly distributed along the center axis of the sealing portion, and a plurality of fixing hooks that are uniformly distributed along the center axis of the sealing portion are formed under the housing. The fixing part is formed with a number of fixing holes, and each fixing hook passes through a corresponding fixing hole to fix the fixing part and the housing. The fixing hooks correspond to the fixing holes one by one, and any fixing hook is inserted into any fixing hole. In the holes, the shielding part is located above the opening and shields each opening;

Preferably, there are four through holes, fixing hooks and fixing holes.

The spray gun liquid reservoir using the above spray gun liquid storage cup is characterized in that it further comprises a cup cover which is detachably connected with the cup body, and the cup cover is formed with a liquid channel for fluid to pass through.

Preferably, the fixing part of the sealing element is in the housing and is clamped and fixed with the housing.

Preferably, the venting mechanism further includes a fixing member, which is fixedly connected to the housing and presses and fixes the fixing part of the sealing member in the housing.

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

The utility model has the following advantages: through the seal that can be elastically deformed with the paint gravity or air pressure, and then automatically close or open, there is no need for the staff to manually open or close the ventilation mechanism, which solves the need for the staff to manually open and close the lid The problem; the automatic opening of the ventilation mechanism avoids the problem of paint leakage or broken cup body caused by the staff forgetting to operate the ventilation mechanism. The shell and its shielding part can block the stirring rod, avoiding the contact between the stirring rod and the seal, and force the opening to open; the shielding part plays the role of shielding the opening for the paint, preventing the paint from directly impacting the opening to open the opening and causing the paint to flow out ; Corresponding fixing hooks and fixing holes to ensure that the opening is always under the shielding part when assembling the seal to avoid incorrect assembly.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only an embodiment of the present utility model. For those of ordinary skill in the art, without creative work, other implementations can be derived from the provided drawings. Attached.

Figure 1: A schematic diagram of the three-dimensional structure of the ventilation mechanism in the eighth embodiment of the present utility model;

Figure 2: A schematic diagram of the explosive structure of the ventilation mechanism in the eighth embodiment of the present utility model;

Figure 3: The second embodiment of the exploded structure diagram of the ventilation mechanism in the eighth embodiment of the present utility model;

Figure 4: A schematic sectional view of the structure of the ventilation mechanism in the eighth embodiment of the present utility model;

Figure 5: a schematic sectional view of the venting mechanism in the ninth embodiment of the present utility model;

Figure 6: A three-dimensional schematic diagram of a spray gun liquid reservoir using the spray gun liquid storage cup in the eighth embodiment of the present utility model;

Figure 7: A schematic sectional view of a spray gun liquid reservoir using the spray gun liquid storage cup in the eighth embodiment of the present utility model;

Figure 8: The utility model uses the spray gun liquid storage cup in the ninth embodiment of the spray gun liquid storage schematic sectional view of the structure;

Figure 9: The utility model uses the spray gun liquid storage cup in the fourth embodiment of the spray gun liquid reservoir in a cross-sectional front view of the structure;

Fig. 10: A schematic sectional view of a three-dimensional structure of a spray gun liquid reservoir using the spray gun liquid storage cup in the fourth embodiment of the present invention;

Figure 11: A schematic cross-sectional top view of the liquid storage cup of the spray gun in the fourth embodiment of the present utility model;

Figure 12: A three-dimensional schematic diagram of a spray gun liquid reservoir using the spray gun liquid storage cup in the fourth embodiment of the present invention;

Figure 13: A partial enlarged schematic diagram of the present utility model at A;

Figure 14: A three-dimensional schematic diagram of the sealing element in the fourth embodiment of the present utility model;

Figure 15: a sectional front view structural schematic diagram of the ventilation mechanism in the fifth embodiment of the present utility model;

Figure 16: A schematic top view of the structure of the ventilation mechanism in the fifth embodiment of the present invention.

Detailed ways

Hereinafter, the utility model will be further explained in conjunction with the drawings and examples:

The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present utility model, and cannot be understood as a limitation to the present utility model.

In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or an option. Disassembly connection, or integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood under specific circumstances.

Example one:

As shown in Figures 1 to 8, this embodiment provides a spray gun liquid storage cup, which includes a cup body 1 on which is provided to allow gas to pass through into the cup body 1 and not allow liquid in the cup body 1 The venting mechanism 3 passing in the reverse direction includes a sealing member 32 that opens the venting mechanism through a change in shape, and the sealing member 32 closes the venting mechanism through a change in shape.

Preferably, the sealing member 32 is made of an elastic material, and a plurality of openings 321a that can be changed in size by elastic deformation are formed on the sealing member 32, and the sealing member 32 opens the venting mechanism by opening the opening 321a, The sealing member 32 closes the ventilation mechanism by closing the opening 321a.

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

Preferably, the sealing member 32 includes a pointed sealing portion 321 protruding upward, and the opening 321 a is formed on the sealing portion 321. The pointed shape means that the top end of the sealing portion 321 is gathered into a point or a line.

Preferably, the sealing part 321 is a hollow cone; the sealing part 321 is a pyramid; the opening 321a is an incision extending downward from the top end of the sealing part 321, and the opening 321a is a part of the sealing part 321 of the sealing part 321 Incision on the side edge.

Preferably, the side surface of the pyramid is curved toward the central axis of the sealing portion 321, and the side surface of the pyramid is a curved surface or a flat surface.

Preferably, the sealing portion 321 is a hollow cone; the sealing portion 321 is a revolving body; the opening 321 a is a cut extending downward from the top end of the sealing portion 321.

Preferably, the openings 321a are cuts along the generatrix of the sealing portion 321, and the openings 321a are evenly distributed along the center axis of the sealing portion 321.

Preferably, the generatrix of the sealing portion 321 is a curve or a straight line that is bent in the direction of the central axis of the sealing portion 321.

working principle:

When in use, the interior of the cup body 1 is filled with paint. At this time, the paint presses on the side surface of the sealing member 32 due to its own gravity, causing the sealing portion 321 to deform, and the bus bar (side) of the sealing portion 321 is further bent toward the central axis (inside) of the sealing portion 321, thereby causing All the openings 321a are closed (that is, the sealing parts 321 on both sides of the opening 321a are squeezed together to close the opening 321a) to prevent the paint from flowing out of the cup 1 through the sealing part 321 downward.

Turn the cup 1 upside down. At this time, the paint in the cup 1 moves downward by gravity to leave the ventilation mechanism. When the pressure difference between the inside of the cup body 1 and the outside becomes larger and larger, and the outside air pressure is high, the opening 321a is pushed open (that is, the sealing portion 321 is elastically deformed by the force to make the opening 321a larger), so that the outside air can pass through the opening 321a .

Outside air enters the cup body 1 from the cavity 321b inside the sealing portion 321 through the opening 321a. In this way, the pressure difference between the inside and outside of the cup body 1 can be balanced, and the pressure inside the cup body 1 is prevented from being too low to cause the pressure difference with the outside to be too large, causing the cup body 1 to be damaged by force.

After use is completed or when the remaining part of the cup 1 is painted, the cup 1 is turned upright, and the sealing portion 321 will be automatically closed by the gravity of the paint. The principle is the same as when the cup 1 is filled with paint.

Embodiment two:

As shown in Figures 9 to 14, this embodiment provides a spray gun liquid storage cup, which includes a cup body 1 on which is provided to allow gas to pass through into the cup body 1 and not allow liquid in the cup body 1 The venting mechanism 3 passing in the reverse direction includes a sealing member 32 that opens the venting mechanism through a change in shape, and the sealing member 32 closes the venting mechanism through a change in shape.

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

Preferably, two sides of the sealing portion 321 are respectively formed with upward and inwardly extending side surfaces, and an opening 321a is formed at the intersection of the two side surfaces, and the opening 321a is a linear cut.

Preferably, both side surfaces are flat surfaces or curved surfaces curved in the direction of the central axis of the sealing portion 321.

Preferably, an upwardly extending vertical surface is formed above the two side surfaces, and the two vertical surfaces are in contact with each other, such as a duckbill valve shape, which increases the contact area of the sealing portions 321 on both sides of the opening 321a and enhances the sealing effect.

working principle:

When in use, the interior of the cup body 1 is filled with paint. At this time, the paint presses on the two side surfaces of the sealing member 32 due to its own gravity, causing the sealing portion 321 to deform, and the two side surfaces of the sealing portion 321 are further bent toward the central axis (inside) of the sealing portion 321, thereby The opening 321a at the top end is closed (that is, the side surfaces on both sides of the opening 321a contact and squeeze together to close the opening 321a) to prevent the paint from flowing out of the cup 1 through the sealing portion 321 downward.

Turn the cup 1 upside down. At this time, the paint in the cup 1 moves downward by gravity to leave the ventilation mechanism. When the air pressure difference between the inside of the cup body 1 and the outside becomes larger and larger, and the outside air pressure is high, the opening 321a is pushed open (that is, the sealing part 321 is elastically deformed by the force to separate the two sides and the opening 321a becomes larger), so that the outside Gas can pass through the opening 321a.

Example three:

As shown in FIG. 9 to FIG. 16, this embodiment is a further solution of the first embodiment or the second embodiment.

The ventilation mechanism 3 further includes a hollow housing 31, the sealing member 32 is in the housing 31 and is fixedly connected to the housing 31, and a shielding portion 312 is formed above the housing 31, and the shielding portion 312 is located at the opening. Each opening 321a is shielded above the 321a, and the shielding portion 312 is formed with a through hole 31a.

Preferably, the housing 31 is fixedly connected to the bottom surface 10 of the cup body 1, and the sealing member 32 is fixedly connected to the housing 31.

Working principle: When the paint moves in the direction of the sealing member 32 until it comes into contact with the sealing portion 321, if the paint directly impacts the opening 321a and its surrounding area, the external force will elastically deform the opening 321a, causing the opening 321a to open, and the paint will The cup body 1 flows downward from the inside of the cup body 1. The shielding portion 312 plays a role of shielding the paint for the opening 321a, that is, the paint first impacts and contacts the shielding portion 312, and then flows downward from the through hole 31a on the side of the shielding portion 312. Since there is no opening 321a under the through hole 31a, the paint will first contact the side surface of the sealing portion 321, bend the side surface inward, and close both sides of the opening 321a close to the opening 321a. Without the paint directly impacting the opening 321a, the opening 321a will not be opened by the impact, and the paint inside the cup body 1 will not flow out of the cup body 1 downward.

At the same time, before spraying, it is often necessary to extend the stirring rod into the cup 1 to stir the paint. The shell 31 and its shielding portion 312 can block the stirring rod, avoid contact between the stirring rod and the sealing member 32, and force the opening 321a to open.

Embodiment four:

As shown in Figs. 9 to 14, this embodiment is a further solution of the third embodiment.

The venting mechanism 3 further includes a hollow housing 31, the sealing member 32 is inside the housing 31, and the sealing member 32 further includes a fixing portion 322. The sealing portion 321 and the fixing portion 322 are integrally formed. The portion 322 is fixedly connected to the housing 31.

Preferably, the shielding portion 312 is formed with a plurality of through holes 31a uniformly distributed along the center axis of the sealing portion 321, and a plurality of through holes 31a uniformly distributed along the center axis of the sealing portion 321 are formed under the housing 31. A fixing hook 313, a flange is formed under the fixing portion 322, a number of fixing holes 322b are formed on the flange of the fixing portion 322, and each fixing hook 313 passes through a fixing hole 322b corresponding to the fixing portion 322 is fixedly connected to the housing 31, the fixing hook 313 corresponds to the fixing hole 322b one-to-one, and any fixing hook 313 is inserted into any fixing hole 322b so that the shielding portion 312 is located above the opening 321a and shields each opening 321a;

Preferably, there are four through holes 31a, fixing hooks 313 and fixing holes 322b.

working principle:

Take four through holes 31a, fixing hooks 313, and fixing holes 322b as an example. As shown in FIG. 10 and FIG. 13, the line between the two pairs of opposed through holes 31 a is two vertical lines, and the shielding portion 312 is cross-shaped. The line between the two pairs of opposite fixing hooks 313 is two vertical lines.

When the sealing portion is the cone in the first embodiment, the number of the openings 321a is 4, forming a cross shape.

As shown in FIG. 13, the shielding portion 312 shields the opening 321a. Since there are four fixing hooks 313 and fixing holes 322b and they are matched, the sealing member 32 has only four installation positions relative to the housing 31. Since the cross-shaped shielding portion 312 shields the sides of the sealing portion 321 in four directions, as long as the sealing member 32 is installed in one installation position relative to the housing 31 so that all openings 321a are all covered by the shielding portion 312, then in any other installation position At this time, all the openings 321a are blocked by the blocking portion 312. In this way, it can be installed directly without considering the position of the sealing member 32 relative to the housing 31, which saves installation time and avoids that the opening 321a caused by an incorrect angle is not blocked by the blocking portion 312.

When the seal 32 is installed, the fixing hole 322b will first elastically deform and increase the area of the fixing hole 322b so as to pass through the enlarged part under the fixing hook 313. After passing through the enlarged part, the fixing hole 322b will shrink and rebound, and the area of the fixing hole 322b is smaller than that of the fixing hook. The area of the enlarged portion of 313 restricts the downward movement of the sealing member 32.

In this embodiment, the radius of the circle enclosed by the outer edge of the opening 321a of the sealing member 32 in the first embodiment and the length of the opening 321a of the sealing member 32 in the second embodiment may be greater than or equal to a pair of two opposed through holes The length of the connecting line between 31a, at this time, the shielding portion 312 still shields the opening 321a. This solution can make the length of the opening 321a the longest in the limited cross-sectional area of the housing 1, and increase the air intake volume of the opening 321a per unit time.

Embodiment five:

As shown in FIG. 15 and FIG. 16, this embodiment is a further solution of the third embodiment.

The radius of the circle enclosed by the outer edge of the opening 321a of the sealing member 32 in the first embodiment and the length of the opening 321a of the sealing member 32 in the second embodiment are smaller than the distance from any through hole 31a to the central axis of the sealing member 32. The sealing member 32 rotates at any angle in the housing 32, and the shielding portion 312 will shield the opening 321a. This solution does not need to consider the position of the sealing member 32 relative to the housing 31, and can be installed directly, which saves installation time and avoids that the opening 321a caused by the wrong angle is not blocked by the blocking portion 312. This solution does not need to limit the seal 32 relative to the housing 31 in the circumferential direction, and the structure is simple.

Embodiment 6:

This embodiment is a further solution of the first embodiment or the second embodiment.

The sealing portion 321 of the sealing member 32 is directly fixed to the cup body 1, for example, the sealing portion 321 is bonded and fixed to the cup body 1.

Embodiment Seven:

The sealing member 32 further includes a fixing portion 322, and the sealing portion 321 and the fixing portion 322 are integrally formed.

The fixing part 322 of the sealing member 32 is directly fixed to the cup body 1, for example, the fixing part 322 is bonded to the cup body 1 or fixed by heat welding.

Embodiment 8:

As shown in FIGS. 1 to 4, 6 and 7, this embodiment is a further solution of any one of Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 5.

The venting mechanism 3 further includes a housing 31 and a fixing member 33. The fixing member 33 is formed with a second through hole 33a. The fixing member 33 is fixedly connected to the housing 31 and compresses the fixing portion 322 of the sealing member 32. It is fixed in the housing 31.

Preferably, the housing 31 and the cup body 1 are integrally formed.

The fixing portion 322 is a protruding portion of the sealing member 32. Preferably, the fixing portion 322 is formed with a flange. The housing 31 is a hollow cylinder with an inner boss formed at one end.

During installation, insert the sealing member 32 into the housing 31 until the fixing part 322 is in contact with the inner boss, and then insert the fixing part 33 into the housing 31 and fix it with the housing 31, so that the fixing part 322 is pressed against the upper part of the fixing part 33 On the inner boss.

Preferably, the fixing member 33 is formed with a third connecting portion 331, and the housing 31 is formed with a first connecting portion 311. The third connecting portion 331 is clamped and fixed to the first connecting portion 311. Preferably, the third connecting portion 331 and the first connecting portion 311 are protrusions and grooves.

Preferably, the fixing member 33 is fixed to the housing 31 by bonding or welding.

Example 9:

As shown in FIG. 5, FIG. 8, FIG. 15 and FIG. 16, this embodiment is a further solution of any one of the first embodiment, the second embodiment, the third embodiment, or the fifth embodiment.

The venting mechanism 3 further includes a housing 31, the housing 31 is fixedly connected to the bottom surface 10 of the cup body 1, and the fixing portion 322 of the sealing member 32 is in the housing 31 and is clamped and fixed to the housing 31.

Preferably, the housing 31 and the cup body 1 are integrally formed.

The fixing portion 322 is formed with a second connecting portion 3221, and the housing 31 is formed with a first connecting portion 311. During installation, the fixing portion 322 is squeezed to reduce the volume of the first through hole 322a, the fixing portion 322 is inserted into the housing 31, and the first connecting portion 311 is inserted into the second connecting portion 3221. After the fixing portion 322 is loosened, the fixing portion 322 returns to its original shape, and the first connecting portion 311 is inserted into the second connecting portion 3221 to fix the sealing member 32 and the housing 31.

Preferably, the first connecting portion 311 and the second connecting portion 3221 are protrusions and grooves.

Embodiment ten:

As shown in FIG. 1 to FIG. 16, this embodiment is a further solution of any one of Embodiment 1 to Embodiment 9.

The spray gun liquid reservoir using the spray gun liquid storage cup of the above embodiment further includes a cup cover 2 which is detachably connected to the cup body 1, and the cup cover 2 is formed with a liquid channel 21 for fluid to pass through.

Preferably, a supporting portion 11 is formed under the cup body 1 for making space for the housing 31.

Preferably, the cup body 1 is a hard cup body, and the cup body 1 may be provided with a soft cup body, and the soft cup body and the cup cover 2 are detachably connected and sealed, and the venting mechanism plays a role of ventilating and does not contact the paint.

working principle:

When in use, the cup body 1 is filled with paint, and the cup cover 2 is fixed with the cup body 1 (it can be fixed by screw connection). The spray gun is fixed on the liquid channel 21 of the cup cover 2 (it can be fixed by screw connection). At this time, the paint presses on the side surface of the sealing member 32 due to its own gravity, causing the sealing portion 321 to deform, and the bus bar (side surface) of the sealing portion 321 is further bent toward the central axis of the sealing portion 321, thereby making all openings 321a is closed (that is, the sealing parts 321 on both sides of the opening 321a are squeezed together to close the sealing part 321) to prevent the paint from flowing out of the cup 1 through the sealing part 321 downward.

Turn the spray gun liquid reservoir upside down. At this time, the paint in the cup body 1 moves downward by gravity, and the paint moves to the lid 2 of the cup. The spray gun is working to spray paint. As the paint in the spray cup 1 becomes less and less, the air pressure difference between the inside of the cup 1 and the outside becomes larger and larger. The elastic deformation makes the sealing portion 321 larger), so that outside air can pass through the opening 321a.

Outside air enters the cup 1 from the cavity 321b through the opening 321a. In this way, the pressure difference between the inside and outside of the cup body 1 can be balanced, and the pressure inside the cup body 1 can be prevented from being too low to cause the pressure difference with the outside to be too large, causing the cup body 1 to be damaged by force.

After the use is completed or the remaining part of the paint in the cup 1 is turned, the liquid reservoir of the spray gun is turned upright, and the sealing part 321 will be automatically closed by the gravity of the paint. The principle is the same as when the cup 1 is filled with paint.

Figures 7 to 9 show that the spray gun liquid reservoir is upright, and the spray gun liquid reservoir at the position of Figures 7 to 9 is rotated 180 degrees so that the liquid channel 21 is below and the cup 1 is above.

The shielding portion 312 has the following effects

1. Before spraying, it is often necessary to extend the stirring rod into the cup 1 to stir the paint. The shell 31 and its shielding portion 312 can block the stirring rod, avoid contact between the stirring rod and the sealing member 32, and force the opening 321a to open.

2. The shielding portion 312 plays a role of shielding the paint for the opening 321a, that is, the paint first impacts and contacts the shielding portion 312, and then flows downward from the through hole 31a on the side of the shielding portion 312. Since there is no opening 321a under the through hole 31a, the paint will first contact the side surface of the sealing portion 321, bend the side surface inward, and close both sides of the opening 321a close to the opening 321a. Without the paint directly impacting the opening 321a, the opening 321a will not be opened by the impact, and the paint inside the cup body 1 will not flow out of the cup body 1 downward.

The present utility model is described above by way of examples, but the present utility model is not limited to the above-mentioned specific embodiments, and any changes or modifications made based on the utility model belong to the scope of protection claimed by the present utility model.

Claims

The spray gun liquid storage cup, including a cup body (1), is characterized in that: the cup body (1) is provided to allow gas to pass into the cup body (1) in the forward direction and not allow the liquid in the cup body (1) to be reversed The passing venting mechanism (3), the venting mechanism includes a sealing member (32), the sealing member (32) opens the venting mechanism through a change in shape, and the sealing member (32) closes the venting mechanism through a change in shape .
The spray gun liquid storage cup according to claim 1, characterized in that: the sealing member (32) is made of elastic material, and a plurality of openings ( 321a), the sealing member (32) opens the ventilation mechanism by opening the opening (321a), and the sealing member (32) closes the ventilation mechanism by closing the opening (321a).
The spray gun liquid storage cup according to claim 2, characterized in that: the sealing member (32) includes a pointed sealing portion (321) protruding upward, and the opening (321a) is formed on the sealing portion (321) .
The spray gun liquid storage cup according to claim 3, characterized in that: the venting mechanism (3) further comprises a hollow housing (31), and the sealing member (32) is in the housing (31) and is connected to the housing (31). The body (31) is fixedly connected, and a shielding portion (312) is formed above the housing (31). The shielding portion (312) is located above the opening (321a) and shields each opening (321a). The shielding portion ( 312) A through hole (31a) is formed.
The spray gun liquid storage cup according to claim 4, characterized in that: the sealing part (321) is a hollow cone; the sealing part (321) is a revolving body; the opening (321a) is a slave sealing part ( 321) Incision extending downward at the top.
The spray gun liquid storage cup according to claim 5, wherein the opening (321a) is an incision along the bus bar of the sealing portion (321), and the opening (321a) is made along the central axis of the sealing portion (321). The circumference is evenly distributed.
The spray gun liquid storage cup according to claim 6, characterized in that the generatrix of the sealing portion (321) is a curve curved in the direction of the central axis of the sealing portion (321).
The spray gun liquid storage cup according to claim 4, characterized in that: both sides of the sealing portion (321) are respectively formed with upward and inwardly extending side surfaces, and an opening (321a) is formed at the intersection of the two side surfaces, The opening (321a) is a linear incision.
The spray gun liquid storage cup according to claim 4, characterized in that: the housing (31) is fixedly connected to the bottom surface (10) of the cup body (1), and the sealing member (32) further comprises a fixing portion (322) ), the sealing portion (321) and the fixing portion (322) are integrally formed, and the fixing portion (322) is fixedly connected to the housing (31).
The spray gun liquid storage cup according to claim 9, characterized in that: the shielding portion (312) is formed with a plurality of through holes (31a) evenly distributed along the center axis of the sealing portion (321), and the shell A number of fixing hooks (313) evenly distributed along the center axis of the sealing portion (321) are formed under the body (31). The fixing portion (322) is formed with a number of fixing holes (322b), and each fixing hook (313) pass through a corresponding fixing hole (322b) to fix the fixing portion (322) with the housing (31). The fixing hooks (313) correspond to the fixing holes (322b) one by one, and any one is fixed. The hook (313) is inserted into any fixing hole (322b) so that the shielding portion (312) is located above the opening (321a) and shields each opening (321a).
The spray gun liquid storage cup according to claim 10, characterized in that there are four through holes (31a), fixing hooks (313) and fixing holes (322b).
The spray gun liquid storage device using the spray gun liquid storage cup according to claim 1, characterized in that it further comprises a cup cover (2), the cup cover (2) is detachably connected to the cup body (1), and the cup The cover (2) is formed with a liquid channel (21) for the passage of fluid.