Pot opening sealing structure

Abstract

The utility model discloses a pot opening sealing structure which is arranged on a pot cover and used for sealing a pot opening of a pot body. Comprising a bearing plate connected to a pot cover; the cover plate is detachably connected to the bearing plate; the pot opening sealing ring is arranged on the cover plate in a sleeving manner; wherein a straight arm part extending in the axial direction is formed on the peripheral wall of the cover plate, the pot opening sealing ring is fixed to the peripheral wall of the straight arm part, and after the distance between the straight arm part and the pot opening subtracts the thickness of the pot opening sealing ring, a deformation space allowing the pot opening sealing ring to deform is formed. The deformation space formed between the straight arm part of the cover plate and the pot opening allows the pot opening sealing ring to generate controllable deformation under the action of pressure, so that the sealing effect is improved, and meanwhile, the pot opening sealing ring is prevented from being damaged due to excessive deformation; the sealing ring is supported and positioned through the straight arm part of the cover plate, so that secondary sealing protection of the pot opening sealing ring is realized, and the leakage risk caused by aging and deformation of the pot opening sealing ring is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of pot sealing, and in particular to a pot opening sealing structure. Background Technology

[0002] Existing cookware sealing structures typically use a single sealing ring directly pressed onto the pot rim. However, under high pressure or high temperature conditions, the sealing ring is prone to losing its elasticity due to excessive compression, leading to seal failure. Therefore, there is an urgent need for a pot rim sealing structure that can guarantee a sealing effect. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by this utility model is to provide a pot opening sealing structure. The deformation space formed between the straight arm part of the cover plate and the pot opening allows the pot opening sealing ring to undergo controllable deformation under pressure, thereby improving the sealing effect and preventing damage to the pot opening sealing ring due to excessive deformation. By providing support and positioning for the sealing ring through the straight arm part of the cover plate, secondary sealing protection for the pot opening sealing ring is achieved, reducing the risk of leakage caused by aging and deformation of the pot opening sealing ring.

[0005] (II) Technical Solution

[0006] The solution adopted by this utility model to solve the above-mentioned technical problem is a pot opening sealing structure, which is provided on the pot lid and used to seal the pot opening; including

[0007] A pressure plate, which is connected to the pot lid;

[0008] A cover plate, which is detachably connected to the pressure plate;

[0009] A sealing ring for the pot opening is fitted onto the cover plate;

[0010] The outer peripheral wall of the cover plate has a straight arm portion extending axially. The pot opening sealing ring is fixed on the outer peripheral wall of the straight arm portion, and the distance between the straight arm portion and the pot opening minus the thickness of the pot opening sealing ring forms a deformation space for the pot opening sealing ring to deform.

[0011] Specifically, the pot opening sealing structure can achieve a secondary seal between the pot opening and the pot body; primary seal: the pot opening sealing ring directly contacts the pot opening to form a seal; secondary seal: the straight arm part of the lid plate limits the pot opening sealing ring and controls the deformation range, thereby ensuring that the inward shrinkage deformation of the pot opening sealing ring is controllable, so as not to cause cooking leakage due to the inherent shrinkage characteristics of silicone due to long-term use, which may result in an ineffective seal between it and the pot opening.

[0012] With the above solution, the cover plate is detachably connected to the pressure plate, allowing users to easily disassemble and replace the pot opening sealing ring, extending the overall product lifespan, reducing subsequent usage costs, and enabling users to thoroughly clean the pot opening sealing ring and related components, avoiding hygiene problems and poor sealing caused by food residue accumulation. The pot opening sealing ring is fitted onto the cover plate, forming a fixed structure, avoiding the problems of loosening and displacement of traditional sealing rings. The deformation space formed between the straight arm of the cover plate and the pot opening allows the pot opening sealing ring to undergo controllable deformation under pressure, improving the sealing effect while preventing damage to the pot opening sealing ring due to excessive deformation. By providing support and positioning for the sealing ring through the straight arm of the cover plate, secondary sealing protection of the pot opening sealing ring is achieved, reducing the risk of leakage caused by aging and deformation of the pot opening sealing ring.

[0013] In some embodiments, the deformation space ranges from 0 to 2 mm.

[0014] By adopting the above scheme, the appropriate deformation space ensures that the sealing ring is subjected to uniform force, avoiding local stress concentration and extending the service life of the sealing ring. The deformation space range of 0-2mm is the optimal range after precise calculation and testing. Within this range, the sealing ring of the pot mouth can generate enough deformation to achieve a tight seal, but will not age or be damaged due to excessive deformation. This range adapts to the thermal expansion and contraction of materials caused by temperature changes during cooking, ensuring that a good sealing effect can be maintained under different temperature conditions. The reasonable deformation space design makes the resistance when opening and closing the pot lid moderate, which can ensure the sealing effect without causing operational difficulties.

[0015] In some embodiments, the outer wall of the cover plate extends axially toward the pot lid to form the straight arm portion; and the pot opening sealing ring includes a sealing portion disposed near the outer wall of the straight arm portion, and the deformation space is formed by subtracting the thickness of the sealing portion from the distance between the straight arm portion and the pot opening.

[0016] The above design, with the straight arm extending towards the lid, provides more effective axial support for the pot opening seal ring, enhancing the overall structural stability. The sealing element is located on the outer wall of the straight arm, making the contact between the pot opening seal ring and the pot opening more stable and controllable, thus improving sealing reliability. The sealing element is positioned between the pot opening and the straight arm, with the deformation space formed by subtracting the thickness of the sealing element from the distance between the straight arm and the pot opening. This optimizes the path of pressure and heat action on the pot opening seal ring during cooking, reducing local deformation and extending its service life.

[0017] In some embodiments, the outer peripheral wall of the straight arm portion extends radially outward to form a fixing portion for fixing the pot opening sealing ring; the pot opening sealing ring includes a mating portion that mates with the fixing portion.

[0018] By adopting the above solution, the interlocking structure of the fixing part and the mating part improves the pull-out resistance of the pot mouth sealing ring, prevents the pot mouth sealing ring from falling off or shifting during use, and also effectively prevents the sealing ring from torsional deformation during use, maintaining the stability of the sealing state; the radially extended fixing part design makes the pot mouth sealing ring more evenly stressed, reduces local stress concentration, and extends the service life of the pot mouth sealing ring.

[0019] In some embodiments, the pressure plate is provided with a recess for fixing the pot opening sealing ring, and the pot opening sealing ring includes a protrusion that can fit into the recess.

[0020] By adopting the above scheme, the cooperation between the recessed part and the raised part enables the precise positioning of the pot mouth sealing ring in three-dimensional space, which greatly improves the stability of the sealing structure and enhances the structure's anti-interference ability. Even under external interference such as vibration and impact, it can maintain a good sealing effect. The design of the recessed part provides clear assembly guidance, simplifies the user's operation steps, improves the assembly success rate, and provides a preset space for the deformation of the pot mouth sealing ring, controlling the deformation range and avoiding sealing failure caused by excessive deformation.

[0021] In some embodiments, a plurality of wedge-shaped portions are provided at one end of the protrusion that contacts the bottom wall of the recess; and the wedge-shaped portions are formed by extending from one end of the protrusion near the bottom wall of the recess in a direction close to the bottom wall.

[0022] Using the above solution, the wedge-shaped part generates radial expansion force under pressure, tightly fitting the bottom wall of the recess and enhancing the sealing performance. Simultaneously, the wedge-shaped design enables automatic guidance during installation, allowing for smooth assembly even with minor deviations, improving the user experience. Furthermore, the wedge-shaped part provides a small displacement adjustment space for the pot opening seal ring, accommodating minor manufacturing tolerances between the pot body and lid, and also adapting to dimensional changes caused by thermal expansion and contraction, maintaining a good sealing effect under temperature fluctuations. The multiple wedge-shaped parts distribute the pressure on the pot opening seal ring, avoiding damage caused by single-point force and extending its service life. The design of the wedge-shaped part extending towards the bottom wall enhances the locking effect, forming a mechanical wedge-like function to prevent accidental dislodgement.

[0023] In some embodiments, an annular rib is formed at one end of the protrusion near the sidewall of the recess, extending radially.

[0024] By adopting the above solution, the annular rib enhances the stability of the pot opening sealing ring under lateral force, preventing sealing failure caused by lateral pressure. Furthermore, the annular rib and the side wall of the recess form an additional sealing point, achieving double sealing protection and improving overall sealing reliability. The annular rib restricts the torsional deformation of the pot opening sealing ring, maintaining the flatness of the sealing surface and the sealing effect. It also increases the contact area and friction between the pot opening sealing ring and the pressure plate, improving fixing stability and preventing accidental loosening. In addition, the annular design ensures that stress is evenly distributed within a 360° range, avoiding local stress concentration and extending the product's service life.

[0025] In some embodiments, the outer edge of the pressure plate near the end of the cover plate is partially recessed inward to form the recess; the pot opening sealing ring includes an abutting portion that can abut against the opening edge of the recess.

[0026] By adopting the above solution, the fit between the abutment part and the opening edge of the recessed part provides a precise positioning reference, ensuring the accuracy of the sealing ring installation position. At the same time, it gives users a clear operating point when installing or removing the sealing ring, improving the convenience of operation.

[0027] In some embodiments, the abutment portion is formed by the outer wall of the pot opening sealing ring extending radially outward.

[0028] By adopting the above solution, the radially extended abutment part forms a mechanical stop, which effectively prevents the axial displacement of the pot opening sealing ring during use, increases the contact area with the pressure plate, disperses the contact pressure, and reduces the risk of local stress concentration. At the same time, the design of the abutment part ensures a tight fit between the pot opening sealing ring and the pressure plate, reducing the risk of leakage due to poor contact.

[0029] In some embodiments, the cover plate is detachably fixed to the pressure plate by means of threads, screws, or spring clips.

[0030] Specifically, the cover plate is positioned on the pressure plate by a fixing post, and the cover plate is connected to a fixing knob. The pot opening sealing ring is fixed to the cover plate, and the fixing knob is rotatably mounted on the fixing post, thereby forming a detachable pot opening sealing structure. Furthermore, by rotating the fixing knob, the cover plate can be pressed tightly, thereby ensuring a full seal with the pressure plate at a relatively small height (between 4-12mm), reducing the active sealing point to only the pot opening portion, and enabling the entire structure to achieve ultra-thinness and high sealing performance.

[0031] (III) Beneficial Effects

[0032] Compared with the prior art, this utility model designs a pot mouth sealing structure.

[0033] (1) The cover plate of this utility model is detachably connected to the pressure plate, which allows users to easily disassemble and replace the pot mouth sealing ring, extend the service life of the entire product, reduce subsequent use costs, and allow users to thoroughly clean the pot mouth sealing ring and related parts, avoiding hygiene problems and poor sealing caused by the accumulation of food residue; the pot mouth sealing ring is fitted on the cover plate to form a fixed structure, avoiding the problem of loosening and displacement of traditional sealing rings; the deformation space formed between the straight arm part of the cover plate and the pot mouth allows the pot mouth sealing ring to undergo controllable deformation under pressure, improving the sealing effect, while preventing excessive deformation from damaging the pot mouth sealing ring; the straight arm part of the cover plate provides support and positioning for the sealing ring, realizing secondary sealing protection for the pot mouth sealing ring, reducing the risk of leakage caused by aging and deformation of the pot mouth sealing ring;

[0034] (2) This utility model makes the sealing ring evenly stressed by an appropriate deformation space, avoids local stress concentration, and extends the service life of the sealing ring; the deformation space range of 0-2mm is the optimal range after precise calculation and testing. Within this range, the sealing ring of the pot mouth can generate enough deformation to achieve a tight seal, and will not accelerate aging or damage due to excessive deformation; this range adapts to the thermal expansion and contraction of materials caused by temperature changes during cooking, ensuring that a good sealing effect can be maintained under different temperature conditions. The reasonable deformation space design makes the resistance when the pot lid is opened and closed moderate, which can ensure the sealing effect without causing operational difficulties.

[0035] (3) This utility model improves the pull-out resistance of the pot mouth sealing ring through the interlocking structure of the fixing part and the mating part, prevents the pot mouth sealing ring from falling off or shifting during use, and also effectively prevents the sealing ring from torsion deformation during use, maintaining the stability of the sealing state; the radially extended fixing part design makes the pot mouth sealing ring more uniformly stressed, reduces local stress concentration, and extends the service life of the pot mouth sealing ring.

[0036] (4) The wedge-shaped part of this utility model generates radial expansion force when under pressure, which fits tightly against the bottom wall of the recess and enhances the sealing performance. At the same time, the design of the wedge-shaped part realizes the automatic guiding function during the installation process. Even with slight deviations, the assembly can be completed smoothly, improving the user experience. Moreover, the wedge-shaped part provides a small displacement adjustment space for the pot mouth sealing ring, which can adapt to the small manufacturing tolerances that may exist between the pot body and the pot lid. It can also adapt to the size changes caused by thermal expansion and contraction, and can still maintain a good sealing effect under temperature fluctuation conditions. The setting of multiple wedge-shaped parts disperses the pressure on the pot mouth sealing ring, avoids damage to the pot mouth sealing ring caused by single-point force, and extends the service life. The design of the wedge-shaped part extending towards the bottom wall enhances the locking effect, forming a mechanical wedge-like function to prevent accidental dislodgement. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of a pot opening sealing structure according to the present invention;

[0039] Figure 2 This is an exploded view of a pot opening sealing structure according to the present invention;

[0040] Figure 3 This is an assembly cross-sectional view of a pot mouth sealing structure and a pot body according to the present invention;

[0041] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0042] The component names corresponding to the various reference numerals in the figure are as follows: 10, pot lid; 20, pot body; 100, pressure plate; 101, recessed part; 200, cover plate; 201, straight arm part; 2011, fixing part; 300, pot mouth sealing ring; 301, sealing part; 302, mating part; 303, protrusion; 3031, wedge-shaped part; 3032, annular rib; 304, abutment part; 400, deformation space; 500, fixing column; 600, fixing knob. Detailed Implementation

[0043] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] It should be noted that the following description covers various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0047] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0048] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0049] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0050] like Figures 1-4As shown, this utility model provides a pot opening sealing structure, which is disposed on a pot lid 10 and used to seal the pot opening of a pot body 20; it includes a pressure plate 100 connected to the pot lid 10; a cover plate 200 detachably connected to the pressure plate 100; and a pot opening sealing ring 300 sleeved on the cover plate 200; wherein, the outer peripheral wall of the cover plate 200 forms a straight arm portion 201 extending axially, the pot opening sealing ring 300 is fixed on the outer peripheral wall of the straight arm portion 201, and the distance between the straight arm portion 201 and the pot opening minus the thickness of the pot opening sealing ring 300 forms a deformation space 400 for the deformation of the pot opening sealing ring 300. Specifically, the pot opening sealing structure can achieve a secondary seal between the pot opening and the pot body 20; primary seal: the pot opening sealing ring 300 directly contacts the pot opening to form a seal; secondary seal: the straight arm portion 201 of the cover plate 200 limits the pot opening sealing ring 300 and controls the deformation range, thereby ensuring that the inward shrinkage deformation of the pot opening sealing ring 300 is controllable, so that cooking leakage will not occur due to the inherent shrinkage characteristics of silicone due to long-term use, which may prevent it from effectively sealing with the pot opening. With the above solution, the cover plate 200 is detachably connected to the pressure plate 100, allowing users to easily disassemble and replace the pot opening sealing ring 300, extending the service life of the entire product, reducing subsequent usage costs, and enabling users to thoroughly clean the pot opening sealing ring 300 and related components, avoiding hygiene problems and poor sealing caused by food residue accumulation. The pot opening sealing ring 300 is fitted onto the cover plate 200, forming a fixed structure, avoiding the problems of loosening and displacement of traditional sealing rings. The deformation space 400 formed between the straight arm portion 201 of the cover plate 200 and the pot opening allows the pot opening sealing ring 300 to undergo controllable deformation under pressure, improving the sealing effect while preventing damage to the pot opening sealing ring 300 due to excessive deformation. The straight arm portion 201 of the cover plate 200 provides support and positioning for the sealing ring, achieving secondary sealing protection for the pot opening sealing ring 300 and reducing the risk of leakage caused by aging and deformation of the pot opening sealing ring 300. In some embodiments, the deformation space 400 ranges from 0 to 2 mm. By adopting the above scheme, the appropriate deformation space 400 ensures that the sealing ring is subjected to uniform force, avoids local stress concentration, and extends the service life of the sealing ring. The deformation space range of 0-2mm 400 is the optimal range after precise calculation and testing. Within this range, the sealing ring 300 of the pot mouth can generate enough deformation to achieve a tight seal without being accelerated by excessive deformation or damage. This range adapts to the thermal expansion and contraction of materials caused by temperature changes during cooking, ensuring that a good sealing effect can be maintained under different temperature conditions. The reasonable deformation space 400 design makes the resistance when the pot lid 10 is opened and closed moderate, which can ensure the sealing effect without causing operational difficulties.In some embodiments, the outer wall of the cover plate 200 extends axially toward the pot lid 10 to form the straight arm portion 201; and the pot opening sealing ring 300 includes a sealing portion 301 disposed near the outer wall of the straight arm portion 201, and the deformation space 400 is formed by subtracting the thickness of the sealing portion 301 from the distance between the straight arm portion 201 and the pot opening. By adopting the above scheme, the design of the straight arm portion 201 extending towards the pot lid 10 provides more effective axial support for the pot mouth sealing ring 300, enhancing the stability of the overall structure. The sealing part 301 is set on the outer wall of the straight arm portion 201, making the contact between the pot mouth sealing ring 300 and the pot mouth more stable and controllable, thus improving the sealing reliability. The sealing part 301 is designed to be between the pot mouth and the straight arm portion 201, and the deformation space 400 is formed by subtracting the thickness of the sealing part 301 from the distance between the straight arm portion 201 and the pot mouth. This optimizes the action path of pressure and heat on the pot mouth sealing ring 300 during cooking, reduces the local deformation of the pot mouth sealing ring 300, and extends its service life.

[0051] In some embodiments, the outer peripheral wall of the straight arm portion 201 extends radially outward to form a fixing portion 2011 for fixing the pot opening sealing ring 300; the pot opening sealing ring 300 includes a mating portion 302 that cooperates with the fixing portion 2011. By adopting the above solution, the interlocking structure of the fixing portion 2011 and the mating portion 302 improves the pull-out resistance of the pot opening sealing ring 300, prevents the pot opening sealing ring 300 from falling off or shifting during use, and effectively prevents torsional deformation of the sealing ring during use, maintaining the stability of the sealing state; the radially extending fixing portion 2011 design makes the pot opening sealing ring 300 more evenly stressed, reduces local stress concentration, and extends the service life of the pot opening sealing ring 300. In some embodiments, the pressure plate 100 is provided with a recessed portion 101 for fixing the pot opening sealing ring 300, and the pot opening sealing ring 300 includes a protrusion 303 that can fit into the recessed portion 101. By adopting the above scheme, the cooperation between the recessed portion 101 and the protrusion 303 achieves precise positioning of the pot opening sealing ring 300 in three-dimensional space, greatly improving the stability of the sealing structure and enhancing its anti-interference ability. Even under external interference such as vibration and impact, it can maintain a good sealing effect. The design of the recessed portion 101 provides clear assembly guidance, simplifies the user's operation steps, and improves the assembly success rate. Furthermore, the recessed portion 101 provides a preset space for the deformation of the pot opening sealing ring 300, controlling the deformation range and avoiding sealing failure caused by excessive deformation. In some embodiments, two wedge-shaped portions 3031 are provided at the end of the protrusion 303 that contacts the bottom wall of the recessed portion 101; and the wedge-shaped portions 3031 are formed by extending from the end of the protrusion 303 near the bottom wall of the recessed portion 101 towards that bottom wall. Using the above solution, the wedge-shaped portion 3031 generates radial expansion force under pressure, tightly fitting the bottom wall of the recessed portion 101 and enhancing the sealing performance. Simultaneously, the design of the wedge-shaped portion 3031 enables automatic guidance during installation, allowing for smooth assembly even with minor deviations, thus improving the user experience. Furthermore, the wedge-shaped portion 3031 provides a small displacement adjustment space for the pot-mouth sealing ring 300, accommodating minor manufacturing tolerances that may exist between the pot body 20 and the pot lid 10, and also adapting to dimensional changes caused by thermal expansion and contraction, maintaining a good sealing effect even under temperature fluctuations. The arrangement of multiple wedge-shaped portions 3031 disperses the pressure on the pot-mouth sealing ring 300, avoiding damage to the pot-mouth sealing ring 300 caused by single-point force, and extending its service life. The design of the wedge-shaped portion 3031 extending towards the bottom wall enhances the locking effect, forming a mechanical wedge-like function to prevent accidental dislodgement. In some embodiments, the end of the protrusion 303 near the side wall of the recessed portion 101 extends radially to form an annular rib 3032.By adopting the above solution, the annular rib 3032 enhances the stability of the pot opening sealing ring 300 under lateral force, preventing sealing failure caused by lateral pressure. In addition, the annular rib 3032 and the side wall of the recessed part 101 form an additional sealing point, achieving double sealing protection and improving the overall sealing reliability. The annular rib 3032 restricts the torsional deformation of the pot opening sealing ring 300, maintains the flatness of the sealing surface and the sealing effect, increases the contact area and friction between the pot opening sealing ring 300 and the pressure plate 100, improves the fixing stability, prevents accidental loosening, and the annular design makes the stress evenly distributed within a 360° range, avoiding local stress concentration and extending the product service life.

[0052] In some embodiments, the outer edge of the pressure plate 100 near the end of the cover plate 200 is partially recessed inward to form the recess 101; the pot opening sealing ring 300 includes an abutment portion 304 that can abut against the opening edge of the recess 101. With this solution, the engagement of the abutment portion 304 with the opening edge of the recess 101 provides a precise positioning reference, ensuring the accuracy of the sealing ring's installation position. Simultaneously, it provides the user with a clear operating point when installing or removing the sealing ring, improving operational convenience. In some embodiments, the abutment portion 304 is formed by the outer wall of the pot opening sealing ring 300 extending radially outward. By adopting the above solution, the radially extended abutment part 304 forms a mechanical stop, which effectively prevents the axial displacement of the pot opening sealing ring 300 during use, increases the contact area with the pressure plate 100, disperses the contact pressure, and reduces the risk of local stress concentration. At the same time, the design of the abutment part 304 ensures a tight fit between the pot opening sealing ring 300 and the pressure plate 100, reducing the risk of leakage due to poor contact.

[0053] In some embodiments, the cover plate 200 is positioned on the pressure plate 100 by a fixing post 500. The cover plate 200 is connected to a fixing knob 600, and the pot opening sealing ring 300 is fixed on the cover plate 200. The fixing knob 600 is rotatably mounted on the fixing post 500, thereby forming a detachable pot opening sealing structure. Furthermore, by rotating the fixing knob 600, the cover plate 200 can be pressed tightly, thereby ensuring a full seal with the pressure plate 100 at a relatively small height (between 4-12mm), reducing the active sealing point to only the pot opening portion, and enabling the entire structure to achieve ultra-thinness and high sealing performance.

[0054] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0055] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pot opening sealing structure, disposed on a pot lid (10), for sealing the pot opening of a pot body (20); characterized in that: include A pressure plate (100) is attached to the pot lid (10); A cover plate (200) is detachably connected to the pressure plate (100); A pot opening sealing ring (300) is fitted onto the cover plate (200); The outer peripheral wall of the cover plate (200) is formed with a straight arm portion (201) extending along the axial direction. The pot opening sealing ring (300) is fixed on the outer peripheral wall of the straight arm portion (201). The distance between the straight arm portion (201) and the pot opening minus the thickness of the pot opening sealing ring (300) forms a deformation space (400) for the deformation of the pot opening sealing ring (300).

2. The pot opening sealing structure according to claim 1, characterized in that: The range of the deformation space (400) is 0-2mm.

3. The pot opening sealing structure according to claim 1, characterized in that: The outer wall of the cover plate (200) extends axially toward the pot lid (10) to form the straight arm portion (201); and the pot opening sealing ring (300) includes a sealing part (301) disposed near the outer wall of the straight arm portion (201), and the deformation space (400) is formed by subtracting the thickness of the sealing part (301) from the distance between the straight arm portion (201) and the pot opening.

4. The pot opening sealing structure according to claim 1, characterized in that: The outer peripheral wall of the straight arm portion (201) extends radially outward to form a fixing portion (2011) for fixing the pot opening sealing ring (300); the pot opening sealing ring (300) includes a mating portion (302) that mates with the fixing portion (2011).

5. The pot opening sealing structure according to claim 1, characterized in that: The pressure plate (100) is provided with a recess (101) for fixing the pot opening sealing ring (300), and the pot opening sealing ring (300) includes a protrusion (303) that can fit into the recess (101).

6. The pot opening sealing structure according to claim 5, characterized in that: The protrusion (303) is provided with a plurality of wedge-shaped portions (3031) at the end that contacts the bottom wall of the recess (101); and the wedge-shaped portions (3031) are formed by the protrusion (303) extending from the end of the protrusion (303) near the bottom wall of the recess (101) in a direction close to the bottom wall.

7. The pot opening sealing structure according to claim 5, characterized in that: The protrusion (303) has an annular rib (3032) extending radially from one end of the sidewall near the recess (101).

8. The pot opening sealing structure according to claim 5, characterized in that: The pressure plate (100) has a recessed portion (101) formed by the inward recess at one end of the outer edge near the cover plate (200); the pot opening sealing ring (300) includes an abutment portion (304) that can abut against the opening edge of the recessed portion (101).

9. The pot opening sealing structure according to claim 8, characterized in that: The abutment portion (304) is formed by the outer wall of the pot opening sealing ring (300) extending radially outward.

10. The pot opening sealing structure according to claim 1, characterized in that: The cover plate (200) is detachably fixed to the pressure plate (100) by means of threads, screws, or springs.

Images