Sealing ring of pulsation vacuum sterilizer and sealing structure of sealing ring
By designing an annular elastic sealing ring with a specific structure, the problem of poor sealing performance of existing sealing rings under high and negative pressure environments is solved, effective sealing in different environments is achieved, and sterilization efficiency is improved and security.
Patent Information
- Application Number
- CN202420254867.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-01
AI Technical Summary
The existing sterilizer sealing ring cannot maintain good sealing performance under high pressure and negative pressure environments, resulting in air leakage or air dissipation.
A uniform annular elastic sealing ring is designed, with its outer side walls equipped with upper and lower grooves and transverse convex edges, the bottom wall is obtusely angled, and the inner extension part is an elastic sheet, which can be closely fit under high pressure and negative pressure. The flip edge of the sterilizer.
It achieves a good sealing effect in high-temperature and high-pressure and low-temperature vacuum environments, avoids air leakage and air dissipation problems, and improves sterilization efficiency and safety.
Smart Images
Figure CN222502644U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sterilization and disinfection, in particular to a sealing ring of a pulsating vacuum sterilizer and a sealing structure thereof. Background Art
[0002] Usually, the sterilizer uses electric heating of liquid (water) to generate high-temperature and high-pressure steam for sterilization. In order to reduce the boiling point of the liquid (water) and evaporate it in advance, the sterilizer will add a pulsating vacuum pumping function to accelerate the boiling and evaporation of the liquid. Therefore, it is necessary to develop a sealing ring that can have good sealing performance under high-pressure conditions and good sealing performance under negative pressure conditions. However, the existing products on the market often have imperfect structures. They are either prone to leaking and deflation under vacuum conditions, or prone to leaking and deflation under high temperature and high pressure. They cannot meet the requirements of the above two working conditions for a long time through a simple sealing structure. Utility Model Content
[0003] The main purpose of the utility model is to provide a sealing ring with reasonable structure and good sealing effect in two directions;
[0004] The second purpose of the utility model is to provide a pulsating vacuum sterilizer sealing structure, which is convenient for achieving a better sealing effect both in low-temperature vacuum and high-temperature and high-pressure environments.
[0005] To achieve the above-mentioned purpose, the utility model provides a sealing ring for a pulsating vacuum sterilizer, wherein the sealing ring is a uniform annular elastic profile, and its outer side wall is provided with at least two circles of grooves, namely an upper groove and a lower groove, the upper part of the upper groove is in an arc shape, and extends from the inside to the outside while gradually decreasing in thickness, and its front end is in a thin sheet shape; its inner side wall is surrounded by two lateral inner convex edges to form a circle of through grooves, and the two lateral inner convex edges are called upper convex edges and lower convex edges.
[0006] Furthermore, the bottom end surface of the sealing ring is defined as a bottom wall, and the cross section along the vertical direction forms an obtuse angle α.
[0007] Wherein, the angle range of the bottom wall angle α is 150 degrees to 175 degrees.
[0008] Furthermore, the inwardly extending portion of the bottom wall extends obliquely downward and forms an angle β with the horizontal direction, and the angle β is 5°<β≤30°.
[0009] Furthermore, the groove of the outer side wall is a groove with an arc-shaped cross section.
[0010] Furthermore, the inwardly extending portion of the bottom wall is the same component as the lower convex edge, and the outwardly extending portion thereof is the same component as the lower portion of the lower groove of the outer peripheral side wall of the sealing ring.
[0011] Furthermore, the bottom wall, the portion extending inwardly and the portion extending outwardly are both gradually thinning.
[0012] Furthermore, the groove of the outer side wall is a groove with an arc-shaped cross section.
[0013] A sealing structure of a pulsating vacuum sterilizer: at least comprising a gland and a sterilizer body, the gland cover is provided with a circle of ribs on its cover edge to form a circle of accommodating grooves on the cover edge, the sealing ring described in any of the above items is inserted into the accommodating groove, the two grooves on the outer side wall of the sealing ring are against the ribs on the cover edge, the upper end face of the sealing ring is against the cover body of the gland, and there are two supporting ribs, one of which is against the upper convex edge of the sealing ring and is in close contact with the cover body of the gland, and the other is installed in the through groove of the sealing ring and its outer side is against the inner wall of the through groove; the upper end of the sterilizer body is provided with a flanged outer edge, the sealing ring has a thickness of H, and the thickness H of the sealing ring is slightly higher than the distance between the gland cover and the outer edge of the upper end of the sterilizer for assembly sealing, the sealing ring is interference fitted between the gland cover and the outer edge, and the bottom wall of the sealing ring is in close contact with the outer edge of the upper end of the sterilizer body to achieve the sealing cover of the gland cover.
[0014] This patent utilizes an ingenious structural design so that the sealing ring can produce a tight sealing effect on the outer edge of the flange of the sterilization chamber container (sterilizer body) when high pressure or negative pressure is applied in both directions. In particular, the inner extension portion of the bottom wall of the sealing ring and the outward extension portion of the bottom wall are intentionally designed to have an elastic sheet effect, so that the sealing ring and the outer edge of the flange can be tightly fitted in both directions, thereby achieving a good sealing effect.
[0015] This patent has a simple structure, low cost and outstanding effect, and has positive and broad application prospects in the industry. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;
[0017] Figure 2 for Figure 1 BB cross-section diagram;
[0018] Figure 3 It is a three-dimensional cross-sectional schematic diagram of an embodiment of the utility model;
[0019] Figure 4 It is a schematic diagram of the application of an embodiment of the utility model;
[0020] Figure 5 It is a high voltage schematic diagram of an embodiment of the utility model;
[0021] Figure 6It is a normal pressure schematic diagram of an embodiment of the utility model;
[0022] Figure 7 It is a schematic diagram of vacuuming according to an embodiment of the utility model.
[0023] Reference Numbers
[0024] 1. Sealing ring; 12. Upper groove; 121. Upper structure; 13. Lower groove; 131. Lower structure; 14. Upper convex edge; 15. Lower convex edge; 16. Through groove; 17. Bottom wall; 171. Inner extension part; 18. Gap; 2. Pressure cover; 22. Retaining edge; 23. Accommodating groove; 24. Cover body; 25. First supporting retaining ring; 26. Second supporting retaining ring; 3. Sterilizer body; 31. Outer edge; 311. Inner part. DETAILED DESCRIPTION
[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention. Example
[0026] like Figure 1-7 As shown, a sealing ring 1 of a pulsating vacuum sterilizer is provided. The sealing ring 1 is a uniform annular elastic profile, and its outer side wall is provided with at least two circles of grooves, namely an upper groove 12 and a lower groove 13. In this embodiment, the cross-sections of the two grooves are arc-shaped, and the upper part structure 121 of the upper groove 12 is in a curved arc shape, and the thickness gradually decreases from the inside to the outside, and the front end thereof is in a thin sheet shape; the inner peripheral side wall of the sealing ring 1 is surrounded by two transverse inner convex edges to form a through groove 16, which are called the upper convex edge 14 and the lower convex edge 15;
[0027] The lower end surface of the sealing ring 1 is a circle with a bottom wall 17 having an angled or arc-shaped cross section. Figure 3 As shown, in this embodiment, the bottom wall 17 is a plane with a cross-sectional angle of an obtuse angle α, and the angle α is 150 degrees to 175 degrees. In this embodiment, the bottom wall 17, its inwardly extending portion 171 and the lower convex edge 15 are the same component, and the inwardly extending portion 171 of the bottom wall 17 extends obliquely downward, presenting an angle β with the horizontal, as shown in FIG. Figure 3 The middle transverse dotted line is a horizontal line, the β is 5°<β≤30°, and the inner extension portion 171 is gradually thinned, and its outer end portion exhibits an elastic sheet effect.
[0028] The lower structure 131 of the lower groove 13 of the outer side wall of the sealing ring 1 is simultaneously formed as the outward extension of the bottom wall 17 of the sealing ring 1. Furthermore, the lower structure 131 (the outward extension of the bottom wall 17 of the sealing ring 1) is gradually thinned from the inside to the outside, and its outer end portion exhibits an elastic sheet effect.
[0029] A sealing structure of a pulsating vacuum sterilizer, comprising at least a gland 2 and a sterilizer body 3, wherein the cover edge of the gland 2 is provided with a circle of retaining edges 22 to form a circle of receiving grooves 23 on the cover edge, wherein the sealing ring 1 is inserted into the receiving groove 23, and the two grooves 12 and 13 on the outer side wall of the sealing ring 1 are gap-matched with the retaining edges 22 of the cover edge (such as Figure 6 The gap K indicated by the mark), the upper end face of the sealing ring 1 is against the cover body 24 of the gland 2, and there are two supporting retaining rings, namely the first supporting retaining ring 25 and the second supporting retaining ring 26, wherein the first supporting retaining ring 25 is arranged in the cover body 24 of the gland 2, and the outer side of the first supporting retaining ring 25 is against the upper convex edge 14 of the sealing ring 1, and the second supporting retaining ring 26 is installed in the through groove 16 of the sealing ring 1, and the outer side of the second supporting retaining ring 26 is against the inner wall of the through groove 16; the upper end of the sterilizer body 3 is provided with a flanged outer edge 31, the sealing ring 1 has a thickness of H, and the height H of the sealing ring 1 is slightly higher than the distance between the gland 2 required for assembly and the outer edge 31 of the upper end of the sterilizer, and the sealing ring 1 is interference fitted between the gland and the outer edge, as shown in FIG. Figure 5-7 As shown, the bottom wall 17 of the sealing ring 1 is in close contact with the outer edge 31 of the upper end of the sterilizer body 3 to achieve the sealing of the pressure cover 2.
[0030] The sealing ring 1 of the patent is installed on the sterilizer gland 2 and supported by two support rings of different diameters. The sealing ring 1 moves as the lid is opened and closed. When the sterilizer needs to be sterilized, the gland 2 completely covers and locks the sterilization chamber container (sterilizer body 3). At this time, the sealing ring 1 completely contacts the outer edge 31 of the flange of the sterilization chamber container (sterilizer body 3), playing a sealing role between the gland 2 and the container.
[0031] When the sterilization chamber is at high temperature and high pressure, the force direction of the sealing ring 1 is as follows Figure 5 As shown by the middle arrow, at this time, the internal pressure is higher than the external pressure, and the internal pressure applies force to the sealing ring 1, wherein the three walls of the through groove 16 are all under pressure, the upper convex edge 14 of the sealing ring 1 is close to the cover body 24, and the inner extension part 171 of the bottom wall 17 of the sealing ring 1 is close to the outer edge 31 of the flange of the sterilization chamber container (sterilizer body 3). In particular, the inner extension part 171 of the bottom wall 17 is a sheet-like design, which further ensures the tight fit effect and strengthens the tight fit effect. When the internal pressure is higher, the inner extension part 171 of the bottom wall 17 can better fit the inner part 311 of the outer edge 31 of the flange due to its thin sheet shape, thereby achieving better sealing.
[0032] like Figure 6 The figure shows a state where the pressure inside and outside the sterilization chamber is the same, and the sealing ring 1 achieves a sealing effect due to its own structure.
[0033] like Figure 7 As shown, when the sterilization chamber is evacuated, the pressure outside the sealing ring 1 is greater than the pressure inside, and the external air enters through the gap 18 between the sealing ring 1 and the cover edge 22, so that there are arc-shaped grooves 12 and 13 on the outside. The force direction is as follows Figure 7 As shown by the middle arrow, there are two support rings 25 and 26 on the inside. At this time, the sealing ring body between the two grooves on the outside of the sealing ring 1 is deformed inward by air pressure, and the upper part structure 121 of the upper groove 12 is pressed tightly against the inside of the rib 22 of the gland 2 by air pressure. Due to the thin sheet shape, the fitting effect is tight, which ensures the sealing effect very well.
[0034] At the same time, the outwardly extending portion of the bottom wall 17 (the lower portion structure 131 of the lower groove 13) is in close contact with the outer edge 31 of the flange of the sterilization chamber container (sterilizer body 3), such as Figure 7 As shown, the outwardly extending portion of the bottom wall 17 presents an elastic sheet effect, further ensuring the area where the sealing ring 1 is in close contact with the outer edge 31 of the flange, thereby ensuring the sealing effect.
[0035] The bottom wall 17 of the sealing ring 1 is two angled planes or arc-shaped planes. When the sealing ring 1 is pre-tightened, the angled planes or arc-shaped planes will be naturally tightened to generate a better pre-tightening force, making the seal more reliable.
[0036] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A sealing ring (1) for a pulsating vacuum sterilizer, characterized in that: The sealing ring (1) is a uniform annular elastic profile, and its outer side wall is provided with at least two circles of grooves, namely an upper groove (12) and a lower groove (13). The upper part structure (121) of the upper groove (12) is in an arc shape, and gradually becomes thinner as it extends from the inside to the outside, and its front end is in a thin sheet shape; its inner side wall is surrounded by two transverse inner convex edges to form a circle of through grooves (16), and the two transverse inner convex edges are called upper convex edges (14) and lower convex edges (15).
2. A sealing ring (1) for a pulsating vacuum sterilizer according to claim 1, characterized in that: The bottom end surface of the sealing ring (1) is defined as a bottom wall, and the cross section along the vertical direction forms an obtuse angle α.
3. A sealing ring (1) for a pulsating vacuum sterilizer as claimed in claim 2, characterized in that: The angle α of the bottom wall (17) ranges from 150 degrees to 175 degrees.
4. A sealing ring (1) for a pulsating vacuum sterilizer as claimed in claim 2, characterized in that: The inwardly extending portion (171) of the bottom wall (17) extends obliquely downward and forms an angle β with the horizontal direction, wherein the angle β is 5°<β≤30°.
5. A sealing ring (1) for a pulsating vacuum sterilizer as claimed in claim 2, characterized in that: The bottom wall (17), its inwardly extending portion (171) and its outwardly extending portion both appear to be gradually thinning.
6. A sealing ring (1) for a pulsating vacuum sterilizer as claimed in claim 2, characterized in that: The inwardly extending portion (171) of the bottom wall (17) is the same component as the lower convex edge (15), and the outwardly extending portion (131) is the same component as the lower portion structure of the lower groove (13) of the outer side wall of the sealing ring (1).
7. A sealing ring (1) for a pulsating vacuum sterilizer according to claim 1, characterized in that: The groove of the outer side wall is a groove with an arc-shaped cross section.
8. A sealing structure of a pulsating vacuum sterilizer, characterized in that: The invention comprises at least one gland (2) and one sterilizer body (3), wherein the cover edge of the gland (2) is provided with a circle of retaining edges (22) to form a circle of receiving grooves (23) on the cover edge, wherein the sealing ring (1) according to any one of claims 1 to 7 is inserted into the receiving groove (23), wherein two grooves on the outer side wall of the sealing ring (1) are pressed against the retaining edges (22) on the cover edge, and the upper end surface of the sealing ring (1) is pressed against the cover body (24) of the gland (2), and two supporting retaining rings (25, 26) are further provided, wherein the outer side of one of the supporting retaining rings (25) is pressed against the upper convex edge (14) of the sealing ring (1) and is in close contact with the gland (2). The cover body (24) is provided with a cover body (24), and another supporting retaining ring is installed in the through groove (16) of the sealing ring (1) and the outer side thereof abuts against the inner wall of the through groove (16); the upper end of the sterilizer body (3) is provided with a flanged outer edge (31); the sealing ring (1) has a thickness H, and the thickness H of the sealing ring (1) is slightly greater than the distance between the gland (2) required for sealing and the outer edge (31) of the upper end of the sterilizer; the sealing ring (1) is interference fitted between the gland (2) and the outer edge (31); the bottom wall (17) of the sealing ring (1) is in close contact with the outer edge (31) of the upper end of the sterilizer body (3), so as to achieve the sealing of the gland (2).