Sealing cup and valve

Abstract

The sealing cup is of a cup-shaped structure which is made of a thin-wall plate body and comprises an annular side plate portion and a bottom plate portion, the top of the side plate portion is turned outwards to form an annular groove capable of being assembled to an opening of a certain container, and a first installation hole is formed in the center of the bottom plate portion. A first type of annular pressing groove surrounding the first mounting hole is formed on the first inner surface of the bottom plate part, and a first type of annular bulge is formed at the corresponding position on the first outer surface of the first wrinkle; one or more second-type annular pressing grooves surrounding the first-type annular pressing grooves are formed in the first inner surface of the bottom plate part, and one or more second-type annular protrusions are formed in the corresponding positions of the first outer surface of the bottom plate part. Compared with the most similar prior art, the valve provided by the utility model has the advantages that materials and cost can be saved on the premise of ensuring the sealing performance; leakage caused by long-time storage can be reduced; and blockage caused by repeated use can be reduced.

Description

Technical Field

[0001] The utility model relates to a sealing cup used for manufacturing a valve and a valve made of the sealing cup and used for sealing and releasing aerosol stored in a container. Background Art

[0002] This valve is mostly used to be installed at the opening of a container. When the valve is closed, it will form a high-pressure seal inside the container, and the aerosol in the container will be well preserved in the container. When the valve is opened, the aerosol will be released under the action of the internal high pressure.

[0003] The existing valves of this type have the following problems:

[0004] First, repeated use can easily cause condensation and blockage;

[0005] Second, the internal pressure is too high, and long-term storage can easily cause the sealing cup to deform, resulting in aerosol leakage due to poor airtightness. Utility Model Content

[0006] The utility model proposes a sealing cup, which is a cup-shaped structure made of a thin-walled plate body and includes an annular side plate portion and a bottom plate portion. The top of the side plate portion is folded outward to form an annular groove that can be assembled to an open portion of a container. The plate body includes a first inner surface that is inside the container and a first outer surface that is outside the container when the sealing cup is assembled to the container. A first mounting hole is opened at the center of the bottom plate portion. A first fold is formed on the bottom plate portion to form a first type of annular groove surrounding the first mounting hole on the first inner surface of the bottom plate portion and a first type of annular protrusion at a corresponding position on the first outer surface. The bottom plate portion is also formed with one or more second type of annular grooves surrounding the first type of annular groove on the first inner surface of the bottom plate portion and one or more second type of annular protrusions at a corresponding position on the first outer surface.

[0007] Further, the thickness of the plate body is between 0.27 mm and 0.41 mm, further preferably, the thickness of the plate body is between 0.27 mm and 0.34 mm, further preferably, the thickness of the plate body is 0.30 mm.

[0008] The utility model also provides a valve, comprising the sealing cup in the first technical solution, and further comprising:

[0009] The sealing plug comprises a first tube body portion having a second mounting hole therein, and an annular flange portion extending from the first tube body portion, wherein the first tube body portion passes through the first mounting hole, an upper surface of the flange portion closely contacts a first inner surface of the bottom plate portion, and a contact area between the first upper surface of the flange portion and the first inner surface of the bottom plate portion has a geometric shape matching so as to form a seal between the sealing cup and the sealing plug, and a contact area between the upper surface of the flange portion and the first inner surface of the bottom plate portion at least covers a first type of annular groove;

[0010] The valve stem includes a second tube body portion with a central hole and a seat body portion connected to the second tube body portion. One end of the central hole is open and the other end is blocked by the seat body portion. The second tube body portion is provided with at least one lateral opening connected to the central hole on one side close to the seat body portion. The second tube body portion is tightly installed in the second mounting hole. When the valve stem is in an unstressed state, the first annular bottom surface of the flange portion is tightly abutted against the second upper surface of the seat body portion.

[0011] Furthermore, a first annular protrusion having a first annular abutment surface extends from the upper edge of the second tube body portion so that the first annular top surface of the first tube body portion is in tight abutment with the first annular abutment surface; a second annular protrusion having a second annular abutment surface extends from the flange portion so that the first mounting hole of the sealing cup is in tight abutment with the second annular protrusion.

[0012] Furthermore, a gap is left between the outer side wall of the second tube body portion adjacent to the opening and the inner side wall of the flange portion.

[0013] Furthermore, in a direction gradually approaching the seat body portion, the gap between the outer side wall of the second tube body portion adjacent to the opening and the inner side wall of the flange portion is uniformly expanded.

[0014] Further, the gap space between the outer side wall of the second tube body portion adjacent to the opening and the inner side wall of the flange portion is coaxially arranged with the cylindrical center hole.

[0015] Furthermore, three lateral openings connected to the central hole are formed on one side of the second tube body portion close to the seat body portion, and the three lateral openings are arranged at equal angles.

[0016] Further, the outer diameter of the annular groove is specifically between 31.20 mm and 31.40 mm, preferably 31.3 mm, and preferably, the inner diameter of the annular groove is specifically between 25.3 mm and 25.5 mm, preferably 25.4 mm; further preferably, the inner surface area of ​​the sealing plug in the gap space is 27.6 mm 2 With 85.6mm 2 Further preferably, the inner wall surface area of ​​the gap space is 27.6mm 2 .

[0017] The utility model has the following beneficial effects:

[0018] Compared with the closest prior art, the valve proposed by the utility model can save materials and costs while ensuring sealing performance; can reduce leakage under long-term storage; and can reduce blockage caused by repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front cross-sectional view of a sealing cup proposed in an embodiment of the utility model is shown;

[0020] Figure 2 A front cross-sectional view of an assembly diagram of a valve proposed in an embodiment of the utility model and a partial enlarged view of the area circled at point A in the front cross-sectional view;

[0021] Figure 3 A front cross-sectional view of an embodiment of a sealing plug, which is one of the components of a valve proposed in an embodiment of the utility model;

[0022] Figure 4 A front cross-sectional view of a second embodiment of a sealing plug, which is one of the components of a valve proposed in an embodiment of the utility model;

[0023] Figure 5 A front cross-sectional view of a valve stem, which is one of the components of a valve according to an embodiment of the utility model;

[0024] Figure 6 is the relationship between the height of the gap space and the surface area of ​​the inner wall;

[0025] Figure 7 This is the corresponding change diagram of the gap space height and the annual liquid leakage; DETAILED DESCRIPTION

[0026] Example 1

[0027] refer to Figure 1A sealing cup is proposed. The sealing cup 1 is a cup-shaped structure made of a thin-walled plate body and includes an annular side plate portion 11 and a bottom plate portion 12. The top of the side plate portion 11 is folded outward to form an annular groove 111 that can be assembled to an open portion of a container. The plate body includes a first inner surface 13 that is located inside the container and a first outer surface 14 that is located outside the container when the sealing cup 1 is assembled into the container. A first mounting hole 121 is opened at the center of the bottom plate portion 12. A first fold is formed on the bottom plate portion 12 to form a first type of annular groove 122 surrounding the first mounting hole 121 on the first inner surface 13-A of the bottom plate portion 12 and a first type of annular protrusion 123 at a corresponding position on the first outer surface 14-A. The bottom plate portion 12 is also formed with one or more second type of annular grooves 124 surrounding the first type of annular groove 122 on the first inner surface 13-A of the bottom plate portion 12 and a second fold is formed on the bottom plate portion 12 to form one or more second type of annular protrusions 125 at a corresponding position on the first outer surface 14-A. Preferably, the first fold and the second fold are coaxially arranged with the first mounting hole 121, and the first fold and the second fold are both smooth structures without sharp edges and corners. The depths of the first type annular groove 122 and the second type annular groove 124 are both between 1.0 mm and 5.0 mm, preferably 1.5 mm. Combined with the connection relationship with the sealing plug 2, the existence of the first fold will inevitably enhance the sealing performance, and the existence of the second fold will not only enhance the pressure resistance of the sealing cup 1, but also because the second fold does not come into contact with the sealing plug 2 as mentioned below, it will save materials to the greatest extent while ensuring the sealing performance and pressure resistance, thereby saving costs. For consumables that are mass-produced and non-reusable, saving a small amount of material will have great market competitiveness.

[0028] When the thickness of the sealing cup 1 is 0.30 mm and the pressure environment is 1.2 MPa, a pressure deformation test is performed on the valve made of the sealing cup 1. Figure 7 As shown, when the number of first type folds and second type folds are both zero, the maximum deformation is 0.6791mm; when the number of first type folds is one and the number of second type folds is zero, the maximum deformation is 0.3885mm; when the number of first type folds is one and the number of second type folds is one, the maximum deformation is 0.2910mm; when the number of first type folds is one and the number of second type folds is two, the maximum deformation is 0.2142mm.

[0029] It can be seen that adding the first type of folds and the second type of folds will greatly increase the strength of the manufactured valve, thereby ensuring the sealing performance and the practical life of the valve.

[0030] Example 2

[0031] refer to Figure 1-7, a valve is proposed, comprising: a sealing cup 1, the sealing cup 1 is a cup-shaped structure made of a thin-walled plate body and includes an annular side plate portion 11 and a bottom plate portion 12, the top of the side plate portion 11 is folded outward to form an annular groove 111 that can be assembled to an open portion of a container, the plate body includes a first inner surface 13 that is located inside the container when the sealing cup 1 is assembled into the container and a first outer surface 14 that is located outside the container, a first mounting hole 121 is opened at the center of the bottom plate portion 12, a first fold is formed on the bottom plate portion 12 to form a first type of annular groove 122 surrounding the first mounting hole 121 on the first inner surface 13-A of the bottom plate portion 12 and a first type of annular protrusion 123 at a corresponding position on the first outer surface 14-A, and one or more second type of annular grooves 124 surrounding the first type of annular groove 122 are formed on the first inner surface 13-A of the bottom plate portion 12 and one or more second type of annular protrusions 125 are formed at a corresponding position on the first outer surface 14-A. Preferably, the first fold and the second fold are coaxially arranged with the first mounting hole 121, and the first fold and the second fold are both smooth structures without sharp edges and corners. The depths of the first type annular groove 122 and the second type annular groove 124 are both between 1.0 mm and 5.0 mm, preferably 1.5 mm. Combined with the connection relationship with the sealing plug 2, the existence of the first fold will inevitably enhance the sealing performance, and the existence of the second fold will not only enhance the pressure resistance of the sealing cup 1, but also because the second fold does not come into contact with the sealing plug 2 as mentioned below, it will save materials to the greatest extent while ensuring the sealing performance and pressure resistance, thereby saving costs. For consumables that are mass-produced and non-reusable, saving a small amount of material will have great market competitiveness.

[0032] The sealing plug 2 also includes a sealing plug 2, which includes a first tube body 21 with a second mounting hole 2-A therein, and an annular flange 22 extending from the first tube body 21. The first tube body 21 passes through the first mounting hole 121, and the upper surface of the flange 22 is in close contact with the first inner surface 13-A of the bottom plate 12, and the geometric shape of the contact area between the first upper surface 221 of the flange 22 and the first inner surface 13-A of the bottom plate 12 matches so that a seal is formed between the sealing cup 1 and the sealing plug 2, and the upper surface of the flange 22 is in close contact with the first inner surface 13-A of the bottom plate 12. The contact area between the inner surface 13-A at least covers the first type of annular groove 122. Preferably, the contact area between the upper surface of the flange portion 22 and the first inner surface 13-A at the bottom plate portion 12 only covers the first type of annular groove 122. It should be pointed out that the sealing cup 1 and the sealing plug 2 need to be sealed on the first inner surface 13-A. The existence of the first type of annular groove 122 is equivalent to increasing the area of ​​the contact area between the upper surface of the flange portion 22 and the first inner surface 13-A at the bottom plate portion 12, thereby effectively enhancing the sealing performance.

[0033] It also includes a valve stem 3, which includes a second tube body portion 31 with a central hole 3-A and a seat body portion 32 connected to the second tube body portion 31, wherein one end of the central hole 3-A is open and the other end is blocked by the seat body portion 32, and the second tube body portion 31 is provided with at least one lateral opening 3-B connected to the central hole 3-A on one side close to the seat body portion 32, and the second tube body portion 31 is tightly mounted in the second mounting hole 2-A. When the valve stem 3 is in an unstressed state, the first annular bottom surface 222 of the flange portion 22 is tightly abutted against the second upper surface 321 of the seat body portion 32.

[0034] Preferably, a first annular protrusion 311 having a first annular abutment surface 3111 extends from the upper edge of the second tube body portion 31 so that the first annular top surface 211 of the first tube body portion 21 forms a tight abutment with the first annular abutment surface 3111; a second annular protrusion 223 having a second annular abutment surface 2231 extends from the flange portion 22 so that the first mounting hole 121 of the sealing cup 1 forms a tight abutment with the second annular protrusion 223.

[0035] Preferably, a gap is left between the outer wall of the second tube body portion 31 adjacent to the opening 3-B and the inner wall of the flange portion 22. When the valve is closed after use, a certain amount of liquid will remain and flow back through the hole 3-A in the valve stem 3 by its own weight, and stay at the lateral opening 3-B. Since the lateral opening 3-B is connected to the outside, the residual liquid contacts the outside, the solvent evaporates, and the solute is oxidized, which will condense at the lateral opening 3-B and cause partial blockage of the lateral opening 3-B or even complete blockage of multiple lateral openings 3-B, making it impossible to use it later or the use effect is poor. This valve leaves a gap between the outer wall of the second tube body portion 31 adjacent to the opening 3-B and the inner wall of the flange portion 22, so that the residual liquid can further flow back into the gap, thereby preventing the lateral opening 3-B from being blocked.

[0036] refer to Figure 1 or Figure 3 Preferably, in the direction gradually approaching the seat body portion 32, the gap between the outer wall of the second tube body portion 31 adjacent to the opening 3-B and the inner wall of the flange portion 22 is uniformly expanded.

[0037] Preferably, when the above structure is adopted, the portion where the flange portion 22 contacts the seat portion 32 to form a seal can naturally form a rib structure, similar to an annular protrusion, and the contact surface between the two is not a surface contact in the prior art. The rib structure or the annular protrusion is more easily compressed and deformed, so that the sealing portion where the flange portion 22 contacts the seat portion 32 has a larger deformation, thereby achieving better sealing.

[0038] Preferably, the gap space 4 between the outer wall of the second tube portion 31 adjacent to the opening 3 -B and the inner wall of the flange portion 22 is coaxially arranged with the cylindrical center hole 3 -A.

[0039] Preferably, three lateral openings 3 -B connected to the central hole 3 -A are provided on one side of the second tube body portion 31 close to the seat body portion 32 , and the three lateral openings 3 -B are arranged at equal angles.

[0040] Preferably, when the outer diameter of the annular groove 111 is 31.3 mm (with a tolerance of 0.1 mm) and / or the inner diameter is 25.4 mm (with a tolerance of 0.1 mm), the height of the gap space 4 is 1.5 mm to 4 mm, and the height of the gap space 4 is further preferably 1.5 mm; correspondingly, the inner wall surface area of ​​the gap space 4 is preferably 27.6 mm 2 Up to 85.6mm 2 The inner wall surface area of ​​the gap space 4 is further preferably 27.6 mm 2 .

[0041] In Example 1, the following comparative test was carried out:

[0042] The outer diameter of the annular groove 111 is set to 31.30 mm, and the inner diameter is set to 25.4 mm, corresponding to the outer diameter of the container mouth being 31.30 mm, and the inner diameter of the container mouth being 25.4 mm; when the height of the gap space 4 changes, the surface area of ​​the inner wall of the gap space 4 changes accordingly, and the annual leakage amount of the liquid in the container changes accordingly.

[0043] Figure 5 When the height of the gap space 4 changes, the change in the surface area of ​​the inner wall of the gap space 4 occurs. The horizontal axis is the height value, in mm, and the vertical axis is the surface area of ​​the inner wall, in mm 2 .

[0044] Figure 6 When the height of the gap space 4 changes, the annual leakage of the liquid changes accordingly. The horizontal axis is the height value, the unit is mm, and the vertical axis is the annual leakage, the unit is g / year.

[0045] refer to Figure 5 as well as Figure 6 It can be concluded that when the height of the gap space 4 is equal to 4 mm, there is an inflection point. At this point, the leakage begins to decrease unexpectedly, and when the height of the gap space 4 is reduced to 1.5 mm, it reaches the lowest value.

[0046] The main reason is that, based on the principle of like tolerates like, the small molecular organic matter in the container will slowly seep out through the molecular gap of the rubber sealing plug 2 and then through the gap space 4. At the same time, the external water molecules will also slowly penetrate into the container, affecting the solution in the container whose solvent is not water. The speed of leakage is related to the inner surface area of ​​the sealing plug 2 in the gap space 4. The inner surface is the leakage surface connected to the outside world. Due to the requirements on the liquid discharge rate of the valve when in use, the height of the lateral opening 3-B can only be reduced to 1.5mm to 4mm, and blockage must be prevented, so the height of the lateral opening 3-B is forcibly related to the height of the gap space 4, and the height of the gap space 4 cannot be reduced indefinitely.

[0047] When the height of the gap space 4 is reduced to 1.5 mm to 4 mm, the surface area of ​​the inner wall of the sealing plug 2 in the gap space 4 is reduced to 27.6 mm. 2 Up to 85.6mm 2 Later, see Figure 5 The experimental results show that when the valve is sealed, the leakage of the liquid sealed in the container by the valve will be disproportionately reduced beyond expectations.

[0048] In the selection of 27.6mm 2 Up to 85.6mm 2 After reaching the lowest value, not only the annual leakage is the lowest, but also the material is saved the most. For consumables that are mass-produced and not reused, saving a small amount of material will generate great market competitiveness.

[0049] Based on this, due to various aspects of strengthening, such as the strengthening of the compressive strength of the folds, the setting of the gap, and the minimization of the height of the gap space, in this embodiment, the material and thickness of the plate can be optimized. Preferably, the plate is made of tinplate with a hardness grade of T2, a hardness HR30T of 52, an elongation of 35%, a tensile strength of 340MPa, and a yield strength of 245MPa. The thickness of the plate is between 0.27mm and 0.41mm, more preferably between 0.27mm and 0.41mm, more preferably, the thickness of the plate is between 0.27mm and 0.34mm, and more preferably, the thickness of the plate is 0.30mm. In other words, the thickness of the sealing cup 1 is also the thinnest, which can save materials while still ensuring quality. The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and the utility model concept of the utility model, shall be equivalently replaced or changed, and shall be covered within the protection scope of the utility model.

Claims

1. A sealing cup, characterized in that: The sealing cup (1) is a cup-shaped structure made of a thin-walled plate body and includes an annular side plate portion (11) and a bottom plate portion (12). The top of the side plate portion (11) is folded outward to form an annular groove (111) that can be assembled to an open portion of a container. The plate body includes a first inner surface (13) located inside the container and a first outer surface (14) located outside the container when the sealing cup (1) is assembled to the container. A first mounting hole (121) is opened at the center of the bottom plate portion (12). The bottom plate portion (12) is formed with a first inner surface (13-A) on the bottom plate portion (12). ) is formed with a first type of annular groove (122) surrounding the first mounting hole (121) and a first fold forming a first type of annular protrusion (123) at a corresponding position on the first outer surface (14-A), and the bottom plate portion (12) is also formed with one or more second type of annular grooves (124) surrounding the first type of annular groove (122) formed on the first inner surface (13-A) of the bottom plate portion (12) and a second fold forming one or more second type of annular protrusions (125) at a corresponding position on the first outer surface (14-A).

2. The sealing cup according to claim 1, characterized in that: The thickness of the board is between 0.27mm and 0.41mm.

3. The sealing cup according to claim 1, characterized in that: The thickness of the board is between 0.27mm and 0.34mm.

4. The sealing cup according to claim 1, characterized in that: The thickness of the plate is 0.30 mm.

5. A valve comprising the sealing cup according to claim 1, characterized in that: Also includes: A sealing plug (2) comprising a first tube body (21) having a second mounting hole (2-A) therein, and an annular flange (22) extending from the first tube body (21), wherein the first tube body (21) passes through the first mounting hole (121), the upper surface of the flange (22) closely contacts the first inner surface (13-A) of the bottom plate (12), and the geometric shapes of the contact area between the first upper surface (221) of the flange (22) and the first inner surface (13-A) of the bottom plate (12) match so as to form a seal between the sealing cup (1) and the sealing plug (2), and the contact area between the upper surface of the flange (22) and the first inner surface (13-A) of the bottom plate (12) at least covers the first type of annular groove (122); The valve stem (3) comprises a second tube body portion (31) having a central hole (3-A) and a seat body portion (32) connected to the second tube body portion (31); one end of the central hole (3-A) is open and the other end is blocked by the seat body portion (32); at least one lateral opening (3-B) connected to the central hole (3-A) is provided on a side of the second tube body portion (31) close to the seat body portion (32); the second tube body portion (31) is tightly mounted in the second mounting hole (2-A); when the valve stem (3) is in an unstressed state, the first annular bottom surface (222) of the flange portion (22) and the second upper surface (321) of the seat body portion (32) are tightly abutted against each other.

6. The valve according to claim 5, characterized in that A first annular protrusion (311) having a first annular abutting surface (3111) extends from the upper edge of the second tube body portion (31) so that the first annular top surface (211) of the first tube body portion (21) and the first annular abutting surface (3111) are in tight abutment with each other; and a second annular protrusion (223) having a second annular abutting surface (2231) extends from the flange portion (22) so that the first mounting hole (121) of the sealing cup (1) and the second annular protrusion (223) are in tight abutment with each other.

7. The valve according to claim 5, characterized in that A gap is left between the outer wall of the second tube body portion (31) adjacent to the opening (3-B) and the inner wall of the flange portion (22).

8. The valve according to claim 7, characterized in that In a direction gradually approaching the seat body portion (32), the gap between the outer wall of the second tube body portion (31) adjacent to the opening (3-B) and the inner wall of the flange portion (22) is uniformly expanded.

9. The valve according to claim 8, characterized in that The gap space (4) between the outer wall of the second tube body portion (31) adjacent to the opening (3-B) and the inner wall of the flange portion (22) is coaxially arranged with the cylindrical center hole (3-A).

10. The valve according to claim 9, characterized in that The second tube body (31) is provided with three lateral openings (3-B) connected to the central hole (3-A) on one side close to the seat body (32), and the three lateral openings (3-B) are arranged at equal angles.

11. The valve according to claim 6, characterized in that The outer diameter of the annular groove (111) is specifically between 31.20 mm and 31.40 mm, and the inner diameter of the annular groove (111) is specifically between 25.3 mm and 25.5 mm.

12. The valve according to claim 6, characterized in that The outer diameter of the annular groove (111) is 31.3 mm, and the inner diameter of the annular groove (111) is 25.4 mm.

13. The valve according to claim 6, characterized in that The inner surface area of ​​the sealing plug (2) in the gap space (4) is 27.6 mm 2 With 85.6mm 2 between.

14. The valve according to claim 6, characterized in that The inner surface area of ​​the gap space (4) is 27.6 mm 2 .

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