Fluid supply cup lid with venting mechanism

Abstract

The application discloses a fluid supply cup cover with a ventilation mechanism, which is characterized in that a first tubular part extending downward is arranged on the surface of the main body facing the bottom of the fluid supply cup, a partition plate is arranged inside the first tubular part, the partition plate divides the first tubular part into a containing cavity and a ventilation cavity, a ventilation opening or a ventilation hole is arranged on the lower part of the partition plate, and the containing cavity and the ventilation cavity are communicated with each other; a second tubular part extending downward is arranged on the surface of the main body corresponding to the ventilation cavity, the length of the second tubular part extending into the ventilation cavity is smaller than the length of the partition plate, a hole is arranged on the bottom of the second tubular part, and the hole is communicated with the ventilation cavity; and the first tubular part is provided with a ventilation pipe. Therefore, paint cannot enter the ventilation cavity, the situation that paint drops from the ventilation hole is avoided, the situation that paint cannot drop in the ventilation pipe is avoided by adopting a mechanical isolation mode, and the ventilation efficiency and stability are improved.

Description

Technical Field

[0001] This invention relates to the field of paint spraying, and more particularly to a fluid supply cup lid with a venting mechanism. Background Technology

[0002] Spray cups and other fluid supply cups are used to store paint. When in use, the spray cup connects to a spray gun, and the spray gun sprays the paint from the cup outwards. The spray cup consists of a lid and a body, which are detachably connected. During transportation and storage, the lid and body are placed separately to save space; when painting is needed, the lid and body are combined into one unit to store the paint. After use, the cup body will be contaminated with paint and must be discarded. When the liquid in the fluid supply cup flows out, gas needs to be introduced into the cup; otherwise, under atmospheric pressure, the fluid flow rate will be very slow and uneven. Existing technologies generally use a venting mechanism at the bottom of the fluid cup or on the lid.

[0003] US Patent No. 10919676B2, entitled "Lid with Ventilation System," discloses a structure that allows air to enter a cup, controlled by a one-way valve. However, after the lid and cup are installed and inverted, paint in the vent tube slowly flows into the paint reservoir in the lid due to gravity. If the paint in the vent tube has not completely flowed into the reservoir, and the spray gun trigger is pulled immediately, external air will be actively drawn into the vent tube, blocking the paint and causing ventilation difficulties or even complete ventilation, affecting normal painting operations. Furthermore, after the cup is painted and refilled with paint, if it is inverted again, the paint in the reservoir does not flow back into the vent tube in time. If this is repeated multiple times, the paint reservoir space will be insufficient, resulting in paint flowing directly from the air passage to the outside of the lid, causing contamination and affecting workers' work. Moreover, the use of a rubber valve or other one-way valve to control air intake means that if the rubber valve is contaminated with paint, it will malfunction.

[0004] Therefore, existing technologies need further improvement and development. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a fluid supply cup lid with a ventilation mechanism, which improves ventilation efficiency and stability by using mechanical ventilation and prevents paint from dripping from the ventilation holes.

[0006] To solve the above-mentioned technical problems, the present invention includes:

[0007] A fluid supply cup lid with a venting mechanism includes a container lid adapted to the fluid supply cup. The main body of the container lid is convex in shape, and a connecting nozzle that allows fluid to pass through is provided in the middle of the main body. A connecting member adapted to a spray gun is provided on the outer periphery of the connecting nozzle. A first tubular portion extending downward is provided on the surface of the main body facing the bottom of the fluid supply cup. A partition plate is provided inside the first tubular portion, dividing the first tubular portion into a receiving cavity and a ventilation cavity. A ventilation structure is provided at the lower part of the partition plate, connecting the receiving cavity and the ventilation cavity. A second tubular portion extending downward is provided on the surface of the main body corresponding to the ventilation cavity. The length of the second tubular portion extending into the ventilation cavity is less than the length of the partition plate. A hole is provided at the bottom of the second tubular portion, which is connected to the ventilation cavity. A vent pipe is provided on the first tubular portion, extending towards the bottom of the fluid supply cup. The vent of the vent pipe is connected to the receiving cavity.

[0008] The fluid supply cup lid, wherein the raised shape is dome-shaped or cone-shaped.

[0009] The fluid supply cup lid, wherein the highest point of the receiving cavity is higher than the highest point of the ventilation cavity.

[0010] The fluid supply cup lid, wherein the arrangement direction of the width of the aforementioned partition plate is consistent with the direction of the circumference of the container lid.

[0011] The fluid supply cup lid is wherein the end of the partition plate and the end of the first tubular portion are located in the same plane; the vent pipe is connected to the first tubular portion through a venting member, and the sealing surface of the venting member forms a sealing surface with the end of the partition plate and the end of the first tubular portion, so that the receiving cavity and the ventilation cavity form a receiving chamber and a ventilation chamber; a through hole is provided in the middle of the sealing surface, and the through hole communicates with the receiving cavity.

[0012] The fluid supply cup lid has an opening portion formed by extending outward from the outer edge of the container lid.

[0013] The fluid supply cup lid has an opening portion shaped like a brim, with several reinforcing ribs arranged between the rear end of the brim and the outer edge of the container lid.

[0014] The fluid supply cup lid has a plurality of strip-shaped grooves evenly arranged on the outer surface of the container lid. The strip-shaped grooves are arc-shaped and the bottom of the strip-shaped grooves protrudes towards the bottom of the fluid supply cup.

[0015] The fluid supply cup lid has symmetrically arranged connecting members on the outer periphery of the connecting nozzle, with gaps between the connecting members.

[0016] The fluid supply cup lid, wherein a spiral wedge element is arranged on the outer periphery of the connecting spout, the spiral wedge element including a groove extending over most of the circumference of the connecting spout.

[0017] This invention provides a fluid supply cup cap with a venting mechanism. The first tubular portion is divided into a receiving cavity for accommodating residual paint and a venting cavity. When the fluid supply cup is finished mixing the paint and the cap is placed on top, the cup body is connected to the spray gun and inverted. A small amount of paint in the venting tube drips down into the receiving cavity, where the paint accumulates at the bottom. Gas can enter the venting cavity through a through-hole, then enter the receiving cavity through the through-hole opening, and finally enter the cup body through the venting tube. This prevents paint from entering the venting cavity, eliminating the possibility of paint dripping from the venting hole. Furthermore, the mechanical isolation method prevents paint from being unable to drip down the venting tube, improving venting efficiency and stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural fluid supply cup in this invention;

[0019] Figure 2 This is a front view of the container lid in this invention;

[0020] Figure 3 This is a schematic diagram of the first tubular portion in this invention from one perspective;

[0021] Figure 4 This is a partial cross-sectional schematic diagram of the first tubular portion in this invention;

[0022] Figure 5 This is a partial cross-sectional schematic diagram of the air guide and the vent pipe in this invention;

[0023] Figure 6 This is a schematic diagram of the sealing surface of the air guide component in this invention;

[0024] Figure 7 This is a schematic diagram of the back of the container lid in this invention;

[0025] Figure 8 This is a schematic diagram of the first tubular portion from another perspective in this invention. Detailed Implementation

[0026] This invention provides a fluid supply cup lid with a venting mechanism. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention is further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] This invention provides a fluid supply cup lid with a venting mechanism, such as... Figure 1 and Figure 2 As shown, it includes a container cap 2 adapted to a fluid supply cup 1. The main body of the container cap 2 is convex in shape, and a connecting nozzle 3 that allows fluid to pass through is provided in the middle of the main body. A connecting member 4 adapted to a spray gun is provided on the outer periphery of the connecting nozzle 3. A first tubular portion 5 extending downwards is provided on the surface of the main body facing the bottom of the fluid supply cup 1, such as... Figure 3 and Figure 4 As shown, the first tubular part 5 is provided with a partition plate 6 inside, which divides the first tubular part 5 into a receiving cavity 7 and a ventilation cavity 8. The lower part of the partition plate 6 is provided with a ventilation structure, which is generally in the form of a vent 9, a vent hole, or a vent pipe. The vent 9 can be a notch provided on the two side walls of the partition plate 6, which forms a vent 9 with the inner wall of the first tubular part 5. Of course, other ventilation methods can also be used to connect the receiving cavity 7 and the ventilation cavity 8. The main body has a downwardly extending second tubular portion 10 on the surface corresponding to the ventilation cavity 8. The length of the second tubular portion 10 extending into the ventilation cavity 8 is less than the length of the partition plate 6. The bottom of the second tubular portion 10 is provided with a hole 11. That is, when the opening of the first tubular portion 5 is placed facing the ground, the height of the hole 11 is always higher than the end of the partition plate 6. The hole 11 is connected to the ventilation cavity 8. Moreover, the height of the vent 9 or vent hole is always less than the height of the hole 11. That is, the vent 9 or vent hole is located between the end of the partition plate 6 and the hole 11. The first tubular portion 5 is provided with a vent pipe 12. The vent pipe 12 extends to the bottom of the fluid supply cup 1. The vent of the vent pipe 12 is connected to the receiving cavity 7. Specifically, when the fluid supply cup 1 is connected to the spray gun for use, the liquid in the fluid supply cup 1 will never be completely full. During the inversion of the fluid supply cup 1, a very small amount of liquid will enter the vent tube 12. This very small amount of liquid will flow into the receiving cavity 7 along the vent tube 12. Since the diameter of the vent tube 12 is generally between 2 mm and 3 mm and the length is between 6 cm and 10 cm, the amount of liquid entering the vent tube 12 is very small. A very small amount of liquid will flow into the receiving cavity 7 along the vent tube 12, and its liquid level will not block the vent 9. The end of the vent tube 12 is at the bottom of the fluid supply cup 1. At this time, the hole 11 introduces the external gas into the ventilation cavity 8, and then into the receiving cavity 7 through the vent 9. Finally, it enters the fluid supply cup 1 from the vent tube 12 through the receiving cavity 7, thereby achieving the balance of the pressure inside and outside the fluid supply cup 1 and ensuring a smoother fluid flow.

[0028] Furthermore, the aforementioned bulges are dome-shaped or cone-shaped, such as... Figure 1As shown, this embodiment employs a conical shape. Furthermore, the highest point of the receiving cavity 7 is higher than the highest point of the ventilation cavity 8. That is, when the first tubular portion 5 is arranged towards the ground, the receiving cavity 7 is located on the upper slope of the conical ridge, while the ventilation cavity 8 is located on the lower slope of the conical ridge. However, when the first tubular portion 5 is arranged towards the sky, the receiving cavity 7 is located on the lower slope of the conical ridge, while the ventilation cavity 8 is located on the upper slope of the conical ridge. This ensures that the very small amount of liquid always flows into the receiving cavity 7 and not into the ventilation cavity 8. After the fluid supply cup 1 is used up, the liquid in the receiving cavity 7 returns to its normal state through the vent pipe 12 and flows back into the fluid supply cup 1.

[0029] More preferably, such as Figure 1 , Figure 3 and Figure 4 The arrangement direction of the width of the aforementioned partition plate 6 is basically consistent with the circumferential direction of the container lid 2. That is to say, when the first tubular part 5 is arranged towards the ground, the height of the ventilation cavity 8 is lower than the height of the receiving cavity 7, ensuring that liquid will not flow into the ventilation cavity 8. Moreover, the container lid 2 is provided with a strip 18 at the corresponding position of the second tubular part 10. The end of the strip 18 is provided with a plug 19, which is adapted to the air inlet end of the second tubular part 10. When not in use, it can close the second tubular part 10 to prevent dust and other debris from falling into the cup.

[0030] Furthermore, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the end of the partition plate 6 and the end of the first tubular portion 5 are located in the same plane; as Figure 3 , Figure 4 and Figure 8As shown, the vent pipe 12 is connected to the first tubular portion 5 via an air guide 13. The sealing surface 14 of the air guide 13 forms a sealing surface with the end of the partition plate 6 and the end of the first tubular portion 5, making the receiving cavity 7 and the ventilation cavity 8 form a receiving chamber and a ventilation chamber, respectively. Furthermore, a through hole 23 is provided in the middle of the sealing surface 14, which communicates with the receiving cavity 7. The inner contour of the air guide 13 is adapted to the outer contour of the first tubular portion 5, and the sealing surface 14 is a circular plate surface adapted to the cross-section of the first tubular portion 5. The ends of the partition plate 6 and the first tubular portion 5 are directly engaged with the sealing surface 14. Moreover, the second tubular portion 10 extends into the ventilation cavity 8, and the outer wall of the second tubular portion 10 and the inner wall of the ventilation cavity 8 form a recess 15. Even if a small amount of liquid enters the ventilation cavity 8, it will remain in the recess 15, further ensuring smooth ventilation. Furthermore, the plug head 19, the strip 18 and the air guide 13 can be integrally molded to simplify the manufacturing process. When in use, the air guide 13 can be directly peeled off from the container cap 2 and snapped onto the first tubular part 5.

[0031] In another preferred embodiment of the present invention, an opening portion is formed by extending outward from the corresponding outer edge of the container lid 2. The opening portion is shaped like a brim 16, and several reinforcing ribs 17 are arranged between the rear end of the brim 16 and the outer edge of the container lid 2. Unlike existing opening mechanisms that typically use a triangular strip and can be opened by pulling with a finger, fluid supply cups are generally thin-walled plastic products. During the pulling process, the cup body and lid are prone to deformation, potentially spilling liquid and polluting the environment. However, using the method of the present invention, the user can hold the cup body with both hands and use their thumbs to push against the opening portion of the brim 16 to slowly open the container lid 2, avoiding liquid spillage during opening. Furthermore, this brim 16 design facilitates demolding.

[0032] Furthermore, such as Figure 2 and Figure 7 As shown, a plurality of strip-shaped grooves 17 are evenly arranged on the outer surface of the container lid 2. The strip-shaped grooves 17 are arc-shaped, and the bottom of the strip-shaped grooves 22 protrudes towards the bottom of the fluid supply cup 1. That is to say, several arc-shaped protrusions 20 will be formed on the side of the container lid 2 facing the fluid supply cup 1, which can make the fluid flow more smoothly when the fluid supply cup 1 is inverted.

[0033] Furthermore, symmetrically arranged connecting parts 4 are provided on the outer periphery of the aforementioned connecting mouth part 3, such as... Figure 1As shown, there is a gap 21 between the connecting parts 4. Specifically, the method disclosed in Chinese Invention Patent No. 202120757691.5, entitled "Reservoir Cap, Spray Gun Reservoir Connecting Mechanism, and Reservoir," can be adopted. Of course, other methods can also be selected as needed. Furthermore, a spiral wedge element is arranged on the outer periphery of the connecting nozzle 3. The spiral wedge element includes a groove that extends over most of the circumference of the connecting nozzle. Specifically, the method disclosed in Chinese Invention Patent No. 02802949.6, entitled "Paint Spray Gun, Connector for It, and Paint Container Including the Connector," can also be adopted. Only two examples are given in this invention. There are many other ways to connect the container cap 2 and the spray gun; for example, a filter screen or other components can be installed inside the container cap 2. These will not be elaborated upon here.

[0034] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A fluid supply cup lid with a venting mechanism, comprising a container lid adapted to a fluid supply cup, the container lid having a raised body, a connecting nozzle allowing fluid to pass through located at the center of the body, and a connecting member adapted to a spray gun located around the outer periphery of the connecting nozzle, characterized in that, The main body has a downward-extending first tubular portion on the surface facing the bottom of the fluid supply cup. A partition plate is installed inside the first tubular portion, dividing it into a receiving cavity and a ventilation cavity. A ventilation structure is provided at the lower part of the partition plate, connecting the receiving cavity and the ventilation cavity. A downward-extending second tubular portion is provided on the surface of the main body corresponding to the ventilation cavity. The length of the second tubular portion extending into the ventilation cavity is less than the length of the partition plate. A hole is provided at the bottom of the second tubular portion, which is connected to the ventilation cavity. A vent pipe is provided on the first tubular portion, extending towards the bottom of the fluid supply cup, and the vent of the vent pipe is connected to the receiving cavity.

2. The fluid supply cup lid according to claim 1, characterized in that, The aforementioned bulges are dome-shaped or cone-shaped.

3. The fluid supply cup lid according to claim 2, characterized in that, The highest point of the aforementioned receiving cavity is higher than the highest point of the ventilation cavity. When the first tubular part is arranged towards the ground, the receiving cavity is located on the upper slope of the conical ridge, while the ventilation cavity is located on the lower slope of the conical ridge.

4. The fluid supply cup lid according to claim 2, characterized in that, The direction of the width of the aforementioned partition plate is consistent with the direction of the circumference of the container lid.

5. The fluid supply cup lid according to claim 1, characterized in that, The end of the partition plate and the end of the first tubular part are located in the same plane; the vent pipe is connected to the first tubular part through an air guide, and the sealing surface of the air guide forms a sealing surface with the end of the partition plate and the end of the first tubular part, so that the receiving cavity and the ventilation cavity form a receiving chamber and a ventilation chamber; a through hole is provided in the middle of the sealing surface, and the through hole communicates with the receiving cavity.

6. The fluid supply cup lid according to claim 1, characterized in that, The outer edge of the container lid extends outward to form an opening.

7. The fluid supply cup lid according to claim 6, characterized in that, The opening part is shaped like a brim, and several reinforcing ribs are arranged between the rear end of the brim and the outer edge of the container lid.

8. The fluid supply cup lid according to claim 1, characterized in that, The outer surface of the container lid is uniformly provided with a plurality of strip-shaped grooves, which are arc-shaped and whose bottom protrudes toward the bottom of the fluid supply cup.

9. The fluid supply cup lid according to claim 1, characterized in that, The outer periphery of the aforementioned connecting mouth is provided with symmetrically arranged connecting parts, and there are gaps between the connecting parts.

10. The fluid supply cup lid according to claim 1, characterized in that, A spiral wedge element is arranged on the outer periphery of the aforementioned connecting mouth part. The spiral wedge element includes a groove that extends over most of the circumference of the connecting mouth part.

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