An inflatable positive pressure seal cover plate

Abstract

The utility model relates to sealing cover plate technical field discloses a kind of inflatable positive pressure sealing cover plate, including cover plate, air inlet pipe and sealing ring, cover plate is used to cover the opening of storage tank, annular groove is opened in cover plate outer wall, sealing ring is located in annular groove, and one end of sealing ring is set as C type, to complete the sealing of storage tank, cover plate is opened with the through hole being communicated with annular groove, one end of air inlet pipe is communicated with sealing ring by through hole, the other end of air inlet pipe is extended cover plate by through hole, one end of air inlet pipe extended cover plate is connected with inflation port, and one end of air inlet pipe close to inflation port is equipped with valve;When inflation is carried out to sealing ring by inflation port, sealing ring expands in annular groove, until the inner wall of opening of storage tank is abutted, to complete the sealing of storage tank, not only operation difficulty is reduced, and dismounting time is also greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of sealing cover technology, specifically to an inflatable positive pressure sealing cover. Background Technology

[0002] In the field of storage tank containers, the cover sealing structure is a key component to ensure the system's airtightness and prevent media leakage. Traditional sealing methods generally adopt a bolt-fastening structure, which involves setting a sealing gasket between the cover and the base, and applying pressure through multiple circumferentially distributed bolts to make the cover and the sealing gasket fit tightly together to achieve a seal.

[0003] However, each time the cover is installed or removed, the staff needs to tighten or loosen a large number of bolts one by one. The operation is cumbersome and time-consuming. Especially when installing the cover, the staff needs to accurately align the bolt holes. Not only is the operation cumbersome and time-consuming, but it is also difficult to operate. To address this, we have proposed an inflatable positive pressure sealing cover to solve the above problems. Utility Model Content

[0004] The present invention aims to provide an inflatable positive pressure sealing cover to solve the problems of existing cover installation and removal being not only cumbersome and time-consuming, but also difficult to operate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an inflatable positive pressure sealing cover, comprising a cover plate, an air inlet pipe, and a sealing ring. The cover plate is used to cover the opening of the storage tank. An annular groove is provided on the outer wall of the cover plate, and the sealing ring is located in the annular groove. The end of the sealing ring near the inner wall of the opening of the storage tank is C-shaped. After the sealing ring is inflated, it can abut against the inner wall of the opening of the storage tank, thereby completing the sealing of the storage tank. The cover plate has a through hole that communicates with the annular groove. One end of the air inlet pipe is connected to the sealing ring through the through hole, and the other end of the air inlet pipe extends out of the cover plate through the through hole. The end of the air inlet pipe extending out of the cover plate is connected to an inflation port, and a valve is provided at the end of the air inlet pipe near the inflation port.

[0006] The beneficial effects of this solution are as follows: When air is injected into the sealing ring through the air inlet, the sealing ring expands in the annular groove until it abuts against the inner wall of the opening of the storage tank, thereby completing the sealing of the storage tank. The whole process only requires covering the opening of the storage tank with the cover plate and then inflating the sealing ring to complete the sealing. When removing the cover plate, simply open the valve to release the air, and the cover plate can be easily removed. This not only reduces the difficulty of operation, but also greatly shortens the disassembly and assembly time.

[0007] Simultaneously, when the sealing ring expands as a whole, the C-shaped side of the sealing ring will generate an outward expansion force due to the internal air pressure. This causes the two edges of the C-shaped sealing ring to preferentially contact the inner wall of the storage tank opening and undergo elastic deformation. As the inflation pressure continues to increase, the cross-section of the C-shaped sealing ring gradually expands, and the contact area between the sealing ring and the storage tank opening gradually increases from the edge to the center. It also automatically compensates for minor unevenness of the inner wall of the storage tank opening, such as wear after long-term use, avoiding the problem of local sealing failure caused by uneven bolt pressure of traditional gaskets, and significantly improving sealing reliability.

[0008] Preferably, as an improvement, a limiting ring is provided on the upper outer wall of the cover plate, and the limiting ring can abut against the upper end of the opening of the storage tank.

[0009] The beneficial effect is that by setting a limit ring, the cover plate is prevented from going too deep into the storage tank when it is connected to the opening of the storage tank, which would make it inconvenient for workers to disassemble the cover plate.

[0010] Preferably, as an improvement, the upper center of the cover plate is provided with a venting valve that communicates with the storage tank.

[0011] The beneficial effects are as follows: During storage or reaction, the internal medium of the storage tank may experience pressure fluctuations due to factors such as temperature changes and chemical reactions. By setting a vent valve that is directly connected to the inside of the storage tank, when the pressure inside the storage tank exceeds the preset safety value, the staff can release some gas by opening the vent valve, thereby controlling the pressure within a reasonable range and avoiding leakage of the medium inside the storage tank, equipment damage, or even safety accidents caused by excessive pressure.

[0012] Preferably, as an improvement, the annular groove is U-shaped, and the sealing ring is embedded in the annular groove.

[0013] The beneficial effects are as follows: The U-shaped annular groove has three contact surfaces. When the sealing ring is inflated, it will generate an outward expansion force. The two opposite side walls of the U-shaped groove can provide reverse support, which restricts the sealing ring from moving in the axial direction of the cover. At the same time, the inner bottom of the annular groove can support the sealing ring, ensuring that the sealing ring can expand smoothly in the radial direction of the cover.

[0014] Preferably, as an improvement, the upper end of the cover plate is provided with a storage groove, in which the air inlet pipe, air inlet and valve can be stored.

[0015] The beneficial effects are: by opening a storage slot and storing the air inlet pipe, air inlet and valve inside the storage slot, the air inlet pipe, air inlet and valve are prevented from being accidentally touched or collided during the transportation of the storage tank, thus reducing the safety hazards during the transportation of the storage tank.

[0016] Preferably, as an improvement, the cover is made of nylon. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional view of the cover plate and storage tank according to an embodiment of the present utility model. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method:

[0019] The reference numerals in the accompanying drawings of the instruction manual include: cover plate 1, storage tank 2, limit ring 3, venting valve 4, annular groove 5, sealing ring 6, air inlet pipe 7, air filling port 8, valve 9, and collection slot 10.

[0020] Example

[0021] The basic implementation examples are as follows: Figure 1 As shown, Figure 1The illustrated inflatable positive pressure sealing cover includes a cover plate 1, an air inlet pipe 7, and a sealing ring 6. The cover plate 1 is a nylon cover plate used to cover the opening of the storage tank 2. A limiting ring 3 is integrally formed on the upper outer wall of the cover plate 1, which can abut against the upper end of the opening of the storage tank 2. An air release valve 4 connected to the storage tank 2 is fixedly installed in the middle of the upper end of the cover plate 1. An annular groove 5 is formed on the outer wall of the cover plate 1. The annular groove 5 is U-shaped, and the sealing ring 6 is embedded in the annular groove 5. The sealing ring 6 is made of rubber material. The U-shaped annular groove 5 has three contact surfaces. When the sealing ring 6 is inflated, it generates air. The outward expansion force, while the two opposite sidewalls of the U-shaped groove provide reverse support, restricts the movement of the sealing ring 6 in the axial direction of the cover. At the same time, the inner bottom of the annular groove 5 can support the sealing ring 6, ensuring that the sealing ring 6 can expand smoothly in the radial direction of the cover. The end of the sealing ring 6 near the inner wall of the opening of the storage tank 2 is set as C-shaped. When the sealing ring 6 is in its natural state, the C-shaped surface of the sealing ring 6 is concave inward. When pressure is applied to the sealing ring 6, the concave C-shaped surface of the sealing ring 6 will expand outward. When the pressure is released from the sealing ring 6, the C-shaped surface of the sealing ring 6 will contract under the action of elasticity. Upon returning to its natural state, when the sealing ring 6 expands as a whole, the C-shaped side of the sealing ring 6 will experience outward expansion due to internal air pressure. This causes the two edges of the C-shaped sealing ring 6 to preferentially contact the inner wall of the opening of the storage tank 2 and undergo elastic deformation. As the inflation pressure continues to increase, the cross-section of the C-shaped sealing ring 6 gradually expands, and the contact area between the sealing ring 6 and the opening of the storage tank 2 gradually increases from the edge to the center. Furthermore, it automatically compensates for minor unevenness in the inner wall of the opening of the storage tank 2, such as wear after long-term use, avoiding the local sealing failure problem caused by uneven bolt pressure in traditional gaskets. This significantly improves sealing reliability. After the sealing ring 6 is inflated, it can abut against the inner wall of the opening of the storage tank 2, thereby completing the sealing of the storage tank 2. The cover plate 1 has a through hole that communicates with the annular groove 5. One end of the air inlet pipe 7 is connected to the sealing ring 6 through the through hole, and the other end of the air inlet pipe 7 extends out of the cover plate 1 through the through hole. The end of the air inlet pipe 7 extending out of the cover plate 1 is fixedly connected to the inflation port 8. The inflation port 8 can be connected to the pressurizing device. A valve 9 is installed at the end of the air inlet pipe 7 near the inflation port 8. When the valve 9 is open, it can pressurize or depressurize the sealing ring 6. When the valve 9 is closed, the sealing ring 6 is in a closed state.

[0022] The upper end of the cover plate 1 is provided with a storage groove 10, in which the air inlet pipe 7, the air inlet 8 and the valve 9 can be stored. This prevents the air inlet pipe 7, the air inlet 8 and the valve 9 from being accidentally touched or collided during the transportation of the storage tank 2, thereby reducing the safety hazards during the transportation of the storage tank 2.

[0023] The specific implementation process is as follows:

[0024] In use, the operator first places the cover plate 1 into the opening of the storage tank 2, and makes the limiting ring 3 on the outer wall of the cover plate 1 abut against the upper end of the opening of the storage tank 2. Then, the air inlet 8 is connected to the pressurizing device, and the valve 9 is opened to pressurize the sealing ring 6. When the pressure reaches the predetermined value, the valve 9 is closed. During this process, the sealing ring 6 expands after being inflated and pressurized, and fits tightly against the inner wall of the opening of the storage tank 2, thereby completing the sealing of the storage tank 2. When it is necessary to remove the cover plate 1, the pressure in the sealing ring 6 is released to the flat pressure by opening the valve 9, so that the sealing ring 6 shrinks into the annular groove 5 and separates from the inner wall of the opening of the storage tank 2. At this time, the operator can easily separate the cover plate 1 from the storage tank 2. In this process, not only is the operation difficulty reduced, but the disassembly and assembly time is also greatly shortened.

[0025] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An inflatable positive pressure sealing cover, characterized in that: The device includes a cover plate, an air inlet pipe, and a sealing ring. The cover plate covers the opening of the storage tank. An annular groove is formed on the outer wall of the cover plate, and the sealing ring is placed in the annular groove. The end of the sealing ring near the inner wall of the storage tank opening is C-shaped. After the sealing ring is inflated, it can abut against the inner wall of the storage tank opening, thereby sealing the storage tank. The cover plate has a through hole that communicates with the annular groove. One end of the air inlet pipe is connected to the sealing ring through the through hole, and the other end of the air inlet pipe extends out of the cover plate through the through hole. The end of the air inlet pipe extending out of the cover plate is connected to an inflation port, and a valve is provided at the end of the air inlet pipe near the inflation port.

2. The inflatable positive pressure sealing cover plate according to claim 1, characterized in that: A limiting ring is provided on the upper outer wall of the cover plate, which can abut against the upper end of the opening of the storage tank.

3. The inflatable positive pressure sealing cover plate according to claim 2, characterized in that: The top center of the cover plate is equipped with a vent valve that is connected to the storage tank.

4. The inflatable positive pressure sealing cover plate according to claim 3, characterized in that: The annular groove is U-shaped, and the sealing ring is embedded in the annular groove.

5. An inflatable positive pressure sealing cover plate according to claim 4, characterized in that: The upper part of the cover plate has a storage slot, in which the air inlet pipe, air inlet and valve can be stored.

6. The inflatable positive pressure sealing cover plate according to claim 5, characterized in that: The cover is made of nylon.

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