Sealing and covering structure adopting pressure self-adaptive sealing structure

Abstract

The invention discloses a sealing cover mounting structure adopting a pressure self-adaptive sealing structure, which is based on a conventional sealing cover structure, takes a rubber ring as a basic structure, optimizes and adds a co-action component, and particularly takes the internal pressure of a container as a power source for cooperatively changing the up-down moving process of a movable ring, so that the pressure self-adaptive sealing structure is formed. The rubber ring is arranged on the inner wall of the container, the lower pressing piece, the upper pressing piece and the multiple externally-expanded jacking blocks are matched to reinforce the rubber ring again, the contact force between the rubber ring and the inner wall of the container is improved, and therefore the sealing effect of the whole structure is improved, and the air bag with the corresponding effect is additionally arranged between the upper pressing piece and the lower pressing piece; on the other hand, the pressure change in the container can be matched in an active air supply mode, and the purpose is to further interfere with the movement mode of the upper pressing piece and the lower pressing piece in cooperation with the pressure change in the container, so that the sealing capacity of the whole sealing structure is in a relatively stable state.

Description

Technical Field

[0001] The invention relates to the technical field of sealing cover installation, and in particular to a sealing cover installation structure adopting a pressure adaptive sealing structure. Background Art

[0002] The essence of the sealing cover is to completely seal the container. For example, reference may be made to the relevant contents mentioned in the publication number CN110966162A. The sealing cover is usually sealed statically by a rubber sealing strip or the like, or dynamically by the pressure inside the container.

[0003] It should be noted that the static sealing method mainly relies on the physical properties (elasticity) of structures such as rubber sealing strips, and its service life is limited. Especially when applied to the sealing requirements of high-pressure containers, it aggravates the damage of structures such as rubber sealing strips and affects the subsequent sealing effect. For the dynamic sealing method, it is optimized on the basis of conventional rubber sealing strips and other structures. It specifically relies on the pressure in the container to expand the rubber sealing structure. The sealing effect is proportional to the pressure in the container. However, it should also be noted that when the pressure in the container fluctuates significantly, it will also indirectly affect the sealing effect. Specifically, at the moment when the pressure in the container fluctuates, the sealing ability is directly destroyed and leakage occurs.

[0004] This application proposes a solution to this problem. Summary of the invention

[0005] The purpose of the present invention is to provide a sealing cover structure adopting a pressure-adaptive sealing structure, which is a sealing structure form of a sealing cover. The static sealing method has a limited service life, while the dynamic sealing method improves the sealing effect based on the pressure inside the container. However, when the pressure inside the container fluctuates significantly, the sealing ability is lost in an instant and leakage occurs.

[0006] The object of the present invention can be achieved by the following technical solution: a sealing cover structure adopting a pressure adaptive sealing structure comprises a cover body and a rubber ring, a mounting plate is fixedly mounted on the upper end of the cover body, and a cooperative component is arranged on the lower side of the cover body corresponding to the mounting plate;

[0007] The cooperative assembly includes an upper pressing plate, a movable ring and a lower pressing plate arranged from top to bottom, a lower pressure air bag is fixedly installed on the lower side of the lower pressing plate, an upper air-replenishing air bag is arranged between the upper pressing plate and the mounting plate, and an intermediate air bag is arranged between the upper pressing plate and the lower pressing plate;

[0008] A directional inclined block is installed on the outer position of the movable ring, a pressure inclined block is arranged on the directional inclined block, and an outward expansion top block corresponding to the rubber ring is installed on the outer position of the pressure inclined block;

[0009] An air supply assembly is installed on the upper side of the installation plate, a connecting column is installed on the upper end of the cover body, and a connecting air column is slidably installed on the lower end of the connecting column.

[0010] It is further configured as follows: the cross sections of the upper pressing plate and the lower pressing plate are both in a curved arch shape, the bending direction of the upper pressing plate is downward, and the bending direction of the lower pressing plate is upward.

[0011] It is further configured that: the upper side position and the lower side position of the inner wall of the movable ring are matched with the curved surfaces of the upper pressing plate and the lower pressing plate respectively.

[0012] It is further configured as follows: the connecting gas column is slidably connected to the mounting plate and the upper pressing plate, and the connecting gas column is fixedly connected to the lower pressing plate.

[0013] It is further configured as follows: the upper and lower ends of the upper air-replenishing airbag are fixedly connected to the mounting plate and the upper pressing plate, and the upper and lower ends of the intermediate airbag are respectively mounted on the upper pressing plate and the lower pressing plate.

[0014] It is further configured as follows: the interior of the connecting air column is hollow, and the lower end of the connecting air column is connected to the interior of the lower pressure airbag, and an air port is opened at an external position of the connecting air column corresponding to the interior of the upper air-replenishing airbag.

[0015] It is further configured that: the air replenishment assembly includes an air pump and an air pressure sensor, and the output end of the air pump passes through the mounting plate and is communicated with the interior of the upper air replenishment airbag.

[0016] It is further configured as follows: a movable groove corresponding to the directional inclined block is opened at the lower end of the cover body, the directional inclined blocks are arranged in a ring array along the center point of the cover body, and a directional guide rod corresponding to the directional inclined block is installed in the movable groove along the vertical direction.

[0017] It is further configured that: the compressed inclined block is in an upward moving state along the setting position of the directional inclined block.

[0018] The present invention has the following beneficial effects:

[0019] 1. The overall structure is based on the conventional sealing cover structure. Its essence is to achieve a sealing effect based on the rubber ring. However, the key lies in the cooperation component added by the rubber ring, and the lower pressure air bag is used as the key structure to withstand the pressure change inside the container. Specifically, the movement mode of the upper and lower pressing plates relative to the movable ring is changed, and based on the movement principle of the inclined wedge, each outward expansion top block presents a movement mode of expanding outward, which is mainly used to increase the pressing force between the rubber ring and the inner wall of the container, thereby improving the sealing effect of the overall structure;

[0020] 2. Based on the above content, it is necessary to explain again that the middle airbag only serves as a buffer protection structure between the upper pressure plate and the lower pressure plate. The key lies in the movement form of the upper air-inflating airbag. When the lower pressure airbag is deformed under pressure, it indirectly affects the upper air-inflating airbag, so that the air pressure change in the upper air-inflating airbag can be directly measured. In this way, the pressure change in the container can be directly measured, and on this basis, the upper air-inflating airbag can be further inflated or deflated, and the movement mode of the upper and lower pressure plates relative to the movable ring can be changed indirectly. On the basis of maintaining a stable sealing effect, the rubber ring can be prevented from being damaged by multiple deformations and reducing the sealing ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a structural schematic diagram of a sealing cover structure using a pressure adaptive sealing structure proposed by the present invention;

[0023] Figure 2 The pressure adaptive sealing structure proposed by the present invention Figure 1 A cross-sectional view of

[0024] Figure 3 A cross-sectional view of a cover body in a sealing cover assembly structure using a pressure-adaptive sealing structure proposed by the present invention;

[0025] Figure 4 This is a structural schematic diagram of a cover body in a sealing cover assembly structure adopting a pressure-adaptive sealing structure proposed by the present invention;

[0026] Figure 5 This is a schematic structural diagram of a movable ring in a sealing cover assembly structure using a pressure adaptive sealing structure proposed by the present invention;

[0027] Figure 6 It is a cross-sectional view of the cooperative component in the sealing cover structure adopting the pressure adaptive sealing structure proposed by the present invention.

[0028] In the figure: 1, cover body; 2, rubber ring; 3, movable ring; 4, lower pressure airbag; 5, connecting air column; 6, middle airbag; 7, lower pressure plate; 8, upper pressure plate; 9, fixing plate; 10, upper air-inflation airbag; 11, connecting column; 12, air-inflation assembly; 13, outward expansion top block; 14, directional inclined block; 15, pressure-bearing inclined block; 16, directional guide rod; 17, movable groove. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: With respect to the sealing structure of the sealing cover, the static sealing method has a limited service life, while the dynamic sealing method improves the sealing effect based on the pressure inside the container. However, when the pressure inside the container fluctuates significantly, the sealing ability is lost in an instant and leakage occurs. The following technical solution is proposed:

[0031] Reference Figures 1 to 6 The sealing cover structure adopting the pressure adaptive sealing structure in this embodiment includes a cover body 1 and a rubber ring 2. A mounting plate 9 is fixedly mounted on the upper end of the cover body 1, and a cooperative component is arranged on the lower side of the cover body 1 corresponding to the mounting plate 9;

[0032] The cooperative assembly includes an upper pressing plate 8, a movable ring 3 and a lower pressing plate 7 arranged from top to bottom, a lower pressure air bag 4 is fixedly installed on the lower side of the lower pressing plate 7, an upper air-replenishing air bag 10 is arranged between the upper pressing plate 8 and the mounting plate 9, and an intermediate air bag 6 is arranged between the upper pressing plate 8 and the lower pressing plate 7;

[0033] A directional inclined block 14 is installed at the outer position of the movable ring 3, a pressure inclined block 15 is arranged on the directional inclined block 14, and an outward expansion top block 13 corresponding to the rubber ring 2 is installed at the outer position of the pressure inclined block 15;

[0034] An air replenishing assembly 12 is installed on the upper side of the mounting plate 12, a connecting column 11 is installed on the upper end of the cover body 1, and a connecting air column 5 is slidably installed on the lower end of the connecting column 11. The cross-sections of the upper pressing plate 8 and the lower pressing plate 7 are both in the shape of a curved arch, and the bending direction of the upper pressing plate 8 is downward, and the bending direction of the lower pressing plate 7 is upward, and the upper side and lower side of the inner wall of the movable ring 3 match the curved surfaces of the upper pressing plate 8 and the lower pressing plate 7 respectively.

[0035] Working principle: Combination Figure 2 To illustrate, the overall structure is basically similar to the conventional sealing cover structure. When the cover body 1 is installed on the container, the elasticity of the rubber ring 2 is used to completely "fill" the gap between the container and the cover body 1 to achieve sealing. However, in this embodiment, a cooperative component is specially added, and it is also necessary to explain that the sealing cover structure proposed by the present invention is mainly used for high-pressure containers. The operation process of this embodiment is as follows:

[0036] S1: After the overall structure is installed on the container, the rubber ring 2 is used to achieve sealing. However, due to the high pressure inside the container, the lower pressing plate 7 will first provide upward pressure, thereby lifting the movable ring 3 from the lower side of the movable ring 3. However, the key is that the lower pressure airbag 4 is deformed under pressure, because the connecting air column 5 is hollow inside, so the pressure change in the upper airbag 10 can be directly measured by the air replenishment assembly 12, which is mainly an indirect feedback of the pressure change inside the container;

[0037] S2: Based on S1, when the internal pressure of the container fluctuates from high to low, first the pressure on the lower pressing plate 7 is reduced, and the pressure in the upper air-replenishing airbag 10 also shows a downward trend. In this state, active air replenishment is performed through the air pump in the air replenishing assembly 12, and then the movement of the upper pressing plate 8 and the lower pressing plate 7 is further maintained.

[0038] Embodiment 2: Supplementary explanation on the movement form of the movable ring:

[0039] The connecting air column 5 is slidably connected to the mounting plate 9 and the upper pressing plate 8, and the connecting air column 5 is fixedly connected to the lower pressing plate 7. The upper and lower ends of the upper air-inflating airbag 10 are fixedly connected to the mounting plate 9 and the upper pressing plate 8. The upper and lower ends of the intermediate airbag 6 are respectively installed on the upper pressing plate 8 and the lower pressing plate 7. The interior of the connecting air column 5 is hollow, and the lower end of the connecting air column 5 is communicated with the interior of the lower pressure airbag 4. An air port is opened at the external position of the connecting air column 5 corresponding to the interior of the upper air-inflating airbag 10. The interior of the connecting air column 5 is hollow, and the lower end of the connecting air column 5 is communicated with the interior of the lower pressure airbag 4. An air port is opened at the external position of the connecting air column 5 corresponding to the interior of the upper air-inflating airbag 10.

[0040] The air replenishment assembly 12 includes an air pump and an air pressure sensor. The output end of the air pump passes through the mounting plate 9 and is connected to the interior of the upper air replenishment airbag 10. An active groove 17 corresponding to the directional inclined block 14 is provided at the lower end of the cover body 1. The directional inclined block 14 is arranged in a circular array along the center point of the cover body 1. A directional guide rod 16 corresponding to the directional inclined block 14 is installed in the active groove 17 along the vertical direction. The pressure inclined block 15 is in an upward moving state along the setting position of the directional inclined block 14.

[0041] Solution Description: Combined Figure 2 To illustrate, the connecting gas column 5 and the lower pressing plate 7 are in a fixed connection state. When the lower pressing plate 7 is subjected to pressure and moves upward, the intermediate air bag 6 between the upper pressing plate 8 and the lower pressing plate 7 is compressed. However, the upper pressing plate 8 and the connecting gas column 5 are further provided with a sliding connection, so the upper pressing plate 8 also tends to move upward, thereby further directly causing the upper air bag 10 to be compressed. This part is the key part of the movement of the cooperative component in the present invention.

[0042] It should also be noted that: because the downward movement of the lower pressing plate 7 causes the movable ring 3 to move upward, in this process, the operating principle of the inclined wedge is coordinated, and the specific reference is made to Figure 5 When the directional inclined block 14 moves vertically upward, the pressure inclined block 15 is affected by the inclined surface, causing the pressure inclined block 15 to expand outward, the purpose of which is to further pressurize the rubber ring 2 therein, so as to increase the pressing force between the rubber ring 2 and the container and improve the sealing effect;

[0043] On the contrary, when the pressure of the container content shows a decreasing trend, the range of its upward movement is reduced because the pressure on the movable ring 3 is reduced, so that the pressing force of the outer expansion pressure block 13 on the rubber ring 2 is reduced. However, in this process, it is necessary to further expand the upper air-inflation airbag 10 by inflating it. The purpose of this method is to increase the distance between the mounting plate 9 and the upper pressing plate 8, so that the upper pressing plate 8 cooperates with the intermediate airbag 6 to further drive the lower pressing plate 7 to move downward, but the key is:

[0044] The upper pressing plate 8 cooperates with the movable ring 3 to provide downward pressure, thereby causing the movable ring 3 to move downward. However, it should be noted that the upper pressing plate and the lower pressing plate 8 only change the movement mode of the movable ring 3 by a small amplitude, and again refer to the movement form of the directional inclined block 14 and the pressure inclined block 15. The directional inclined block 14 is in a follow-up state with the movable ring 3, so that when the internal pressure of the container is relatively high, the pressure inclined block 15 is moved to the corresponding position through the directional inclined block 14. On the contrary, when the internal pressure of the container is reduced, the movable ring 3 shows a downward movement trend, but the pressure inclined block 15 and the outward expansion top block 13 keep squeezing the rubber ring 2.

[0045] Therefore, it can be understood that the key content of the present invention is that the above-mentioned air-inflation airbag 10 actively bears the pressure change inside the container.

[0046] Embodiment 3: The following supplementary explanation is provided in combination with Embodiment 1 and Embodiment 2:

[0047] Explanation for the state of continuous high pressure: the lower pressure airbag 4 is deformed and reduced in volume under pressure, and the key is that the lower pressure sheet 7 moves upward and completely contacts the movable ring 3, but it should be noted that there is an upper limit to the movement process of the outward expansion top block 13, and its essence is that when the outward expansion top block 13 moves to the maximum distance, it cannot continue to move upward, so in this state, the key is to increase the clamping force on the rubber ring 2;

[0048] The key point of the present invention is that when the pressure inside the container is reduced, it is necessary to replenish air into the upper air replenishment airbag 10 through the air pump in the air replenishment assembly 12, and the pressure on the lower pressure airbag 4 is reduced. In this regard, air can be replenished in the upper air replenishment assembly 10, specifically to ensure that the upper pressing plate 8 is completely in contact with the upper curved surface position of the movable ring 3, specifically to maintain the relative position of the movable ring 3. In this state, the lower pressing plate 7 is also moved downward by the expansion process of the upper air replenishment airbag 10, which can be understood as follows:

[0049] It can ensure that the lower pressing piece 7 continues to contact the lower curved surface of the movable ring 3, and it can also ensure that the lower pressing piece 7 is separated from the movable ring 3. The essence of the overall movement process is that when the internal pressure of the container is too high, it is necessary to continuously increase the pressing force on the rubber ring 2 by the outer expansion top block 13 to improve the sealing effect. However, when the pressure of the container is reduced, in order to avoid over-pressing the rubber ring 2, the movement mode of the movable ring 3 can be appropriately adjusted in accordance with the internal pressure of the container, and only the sealing effect of the rubber ring 2 on the container itself is maintained;

[0050] To be more specific, it is mainly aimed at the state of pressure fluctuation, specifically to avoid the workload of the rubber ring 2 when the pressure fluctuation is large. The specific process is: by actively replenishing or deflating the upper air-inflating airbag 10, the relative movement of the upper pressing plate 8 and the lower pressing plate 7 is changed, and the upper pressing plate 8 and the lower pressing plate 7 are appropriately moved by the change of the internal pressure of the container, and because the intermediate airbag 6 is a completely closed structure, the internal gas thereof is used as a buffer protection structure when the upper pressing plate 8 and the lower pressing plate 7 move relative to each other. Because the intermediate airbag 6 does not participate in the sealing process, the degree of wear and tear thereof will not affect the sealing ability, and when the internal pressure of the container is reduced, the pressurized inclined block 15 cooperates with the outward-expanding top block 13 to continue to squeeze the rubber ring 2, so as to avoid the problem that the sealing ability of the rubber ring 2 is reduced or even lost in a short time at the moment of pressure fluctuation.

[0051] In summary: based on the conventional sealing cover structure, the rubber ring is used as the basic structure and the cooperative component is added in an optimized manner. Specifically, the internal pressure of the container is used as the "power source" to cooperate with changing the up and down movement process of the movable ring, and cooperate with the lower pressure plate, the upper pressure plate and multiple outward expansion top blocks to reinforce the rubber ring, thereby improving the contact force between the rubber ring and the inner wall of the container, thereby improving the sealing effect of the overall structure. An air bag with a corresponding effect is added between the upper pressure plate and the lower pressure plate. On the one hand, it serves as a key structure to withstand the internal pressure of the container. On the other hand, it can cooperate with the changes in the internal pressure of the container by actively replenishing air. The purpose is to cooperate with the changes in the internal pressure of the container, further interfere with the movement of the upper pressure plate and the lower pressure plate, and make the sealing ability of the overall sealing structure in a relatively stable state.

[0052] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing cover structure adopting a pressure adaptive sealing structure, comprising a cover body (1) and a rubber ring (2), characterized in that: A mounting plate (9) is fixedly mounted on the upper end of the cover body (1), and a cooperating component is arranged on the lower side of the cover body (1) corresponding to the mounting plate (9); The cooperative assembly comprises an upper pressing plate (8), a movable ring (3) and a lower pressing plate (7) arranged from top to bottom, a lower pressure air bag (4) is fixedly installed on the lower side of the lower pressing plate (7), an upper air replenishing air bag (10) is arranged between the upper pressing plate (8) and the mounting plate (9), and an intermediate air bag (6) is arranged between the upper pressing plate (8) and the lower pressing plate (7); A directional inclined block (14) is installed at an outer position of the movable ring (3), a pressure inclined block (15) is arranged on the directional inclined block (14), and an outward expansion top block (13) corresponding to the rubber ring (2) is installed at an outer position of the pressure inclined block (15); An air supply assembly (12) is installed on the upper side of the installation plate (12), a connecting column (11) is installed on the upper end of the cover body (1), and a connecting air column (5) is slidably installed on the lower end of the connecting column (11).

2. The sealing cover structure using a pressure adaptive sealing structure according to claim 1, characterized in that: The cross sections of the upper pressing plate (8) and the lower pressing plate (7) are both in the shape of a curved arch, and the bending direction of the upper pressing plate (8) is downward, while the bending direction of the lower pressing plate (7) is upward.

3. The sealing cover structure using a pressure adaptive sealing structure according to claim 1, characterized in that: The upper side position and the lower side position of the inner wall of the movable ring (3) are matched with the curved surfaces of the upper pressing plate (8) and the lower pressing plate (7) respectively.

4. The sealing cover assembly structure using a pressure adaptive sealing structure according to claim 1, characterized in that: The connecting gas column (5) is slidably connected to the mounting plate (9) and the upper pressing plate (8), and the connecting gas column (5) is fixedly connected to the lower pressing plate (7).

5. The sealing cover assembly structure using a pressure adaptive sealing structure according to claim 1, characterized in that: The upper and lower ends of the upper air-replenishing airbag (10) are fixedly connected to the mounting plate (9) and the upper pressing plate (8), and the upper and lower ends of the intermediate airbag (6) are respectively mounted on the upper pressing plate (8) and the lower pressing plate (7).

6. The sealing cover assembly structure using a pressure adaptive sealing structure according to claim 4, characterized in that: The interior of the connecting air column (5) is hollow, and the lower end of the connecting air column (5) is connected to the interior of the lower pressure air bag (4). The connecting air column (5) is provided with an air port at an external position corresponding to the interior of the upper air replenishment air bag (10).

7. The sealing cover assembly structure using a pressure adaptive sealing structure according to claim 1, characterized in that: The air replenishment assembly (12) comprises an air pump and an air pressure sensor, and the output end of the air pump passes through the mounting plate (9) and is in communication with the interior of the upper air replenishment airbag (10).

8. The sealing cover assembly structure using a pressure adaptive sealing structure according to claim 1, characterized in that: A movable groove (17) corresponding to the directional inclined block (14) is provided at the lower end of the cover body (1); the directional inclined blocks (14) are arranged in a ring array along the center point of the cover body (1); and a directional guide rod (16) corresponding to the directional inclined block (14) is installed in the movable groove (17) along the vertical direction.

9. The sealing cover assembly structure using a pressure adaptive sealing structure according to claim 1, characterized in that: The pressure-bearing inclined block (15) is in an upwardly moving state along the setting position of the directional inclined block (14).

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