A dynamic seal self-sealing cup structure

Abstract

The application discloses a dynamic sealing self-sealing cup structure, which comprises a shell, a bushing and a top cover. The shell is cup-shaped and has a shell cavity. A suction nozzle communicating with the shell cavity is arranged at a first end of the shell in the length direction. A guide structure coaxially extending is arranged at a second end of the shell in the length direction. A medium flow channel communicating with the shell cavity is arranged in the guide structure. The bushing is fixed to an external component and is sleeved on the guide structure in a sliding fit mode. The bushing and the guide structure are elastically connected in the length direction. The top cover is connected to the guide structure at the other end of the bushing. The top cover is provided with a switching flow channel communicating with the medium flow channel. The opening of the switching flow channel is located on the side surface. The top cover is provided with a sealing structure matched with the bushing outside the opening. When the top cover moves in the direction away from the first end, the medium in the shell cavity can flow out through the switching flow channel, forming a communication state. When the top cover moves in the opposite direction, the switching flow channel can be blocked from communicating with the outside, forming a self-sealing state. The structure is simple and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the technical field of dynamic sealing structural components, and in particular to a dynamic sealing self-sealing cup-shaped structure. Background Technology

[0002] Dynamic seals are core components in industrial equipment to prevent media leakage. Their technological development is showing a diversified trend, but they still face many challenges, including media such as gases and liquids including corrosive media such as electrolytes.

[0003] In the existing technology, a dynamic sealing structure is designed with stepped U-shaped grooves and suspension columns of dynamic and static rings to form three types of bent flow channels: self-impact, centrifugal and labyrinth, to achieve efficient sealing under low pressure difference. However, the overall structure is complex and difficult to maintain in the later stage. Utility Model Content

[0004] This application provides a dynamic sealing self-sealing cup-shaped structure, which not only achieves dynamic sealing self-sealing, but also has a compact and simple overall structure that is easy to disassemble and maintain.

[0005] This application provides a dynamically sealed self-sealing cup-shaped structure, comprising:

[0006] The housing is cup-shaped and has a cavity. The housing has a first end and a second end opposite each other in the length direction. The first end is provided with a suction nozzle communicating with the cavity. The second end is coaxially extended with a guide structure. The guide structure is provided with a medium flow channel communicating with the cavity.

[0007] A bushing is fixed to an external component, the bushing is slidably fitted onto the guide structure, and the bushing and the guide structure are elastically connected in the length direction;

[0008] The top cover is connected to the guide structure at the other end of the bushing. The top cover has a transition channel that communicates with the medium flow channel. The opening of the transition channel is located on the side of the top cover. The top cover has a sealing structure that cooperates with the bushing on the outside of the opening. When the top cover moves away from the first end, the medium in the shell cavity can flow out through the transition channel to form a communication state. When the top cover moves in the opposite direction, it can block the communication between the transition channel and the outside world to form a self-sealing state.

[0009] In one possible implementation, the guide structure is a connecting shaft, the guide structure is detachably connected to the second end, and the top cover and the connecting shaft are detachably connected.

[0010] In one possible implementation, the medium flow channel is tapered at one end near the cavity, and the outer diameter of the tapered shape gradually decreases from one end near the cavity to the other end.

[0011] In one possible implementation, the opening is one or more.

[0012] In one possible implementation, when multiple openings are provided, the openings are radially symmetrically distributed on the top cover.

[0013] In one possible implementation, the sealing structure is a sloping flexible structure, and the end of the bushing away from the housing has an arc-shaped transition structure on its inner side that cooperates with the sealing structure.

[0014] In one possible implementation, a sealing sleeve is embedded in the bushing in a sealed manner, the sealing sleeve is slidably engaged with the guide structure, the guide structure has a limiting step at one end near the housing, the limiting step is directly opposite the bushing, and the bushing is elastically connected to the limiting step on the outside by an elastic element.

[0015] In one possible implementation, the elastic element is a spring.

[0016] In one possible implementation, the first end is detachably connected to a base, and the suction nozzle is located within the base.

[0017] In one possible implementation, the housing has a double-layer structure, including an inner transparent plastic layer and an outer stainless steel layer, the stainless steel layer having a viewing window.

[0018] Beneficial effects: Compared with the prior art, the dynamic sealing self-sealing cup structure provided in this application forms a self-sealing medium channel through the cooperation of the shell, bushing and top cover. When an external force pushes the shell to move the top cover away from the first end, the sealing structure on the top cover disengages from the bushing, the self-sealing cup opens, and the medium can flow sequentially through the nozzle, shell cavity, medium flow channel, and transfer flow channel, and finally be discharged to the outside through the outlet. When the external force is removed, the top cover and shell are reset under the rebound action, and the sealing structure can cooperate with the bushing to form a self-sealing again. The overall structure is ingenious, simple and easy to disassemble, repair and maintain.

[0019] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0020] Figure 1 The diagram shows a front view of the dynamic sealing self-sealing cup-shaped structure of this application.

[0021] Figure 2The diagram shows a front sectional view of the dynamic sealing self-sealing cup-shaped structure of this application.

[0022] Figure 3 This application shows Figure 2 A magnified structural diagram of part A in the middle.

[0023] Figure 4 This application shows Figure 2 A magnified structural diagram of part A in a sealed state. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0026] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0027] refer to Figures 1 to 4This application provides a dynamically sealed self-sealing cup-shaped structure, including a housing 10, a bushing 20, and a top cover 30. The housing 10 is cup-shaped and has a cavity 101. The housing 10 has a first end and a second end opposite each other in the length direction. The first end is provided with a suction nozzle 11 communicating with the cavity 101, allowing a medium to enter the cavity 101 through the suction nozzle 11. The second end is coaxially extended with a guide structure 12, and the guide structure 12 has a medium flow channel 102 communicating with the cavity 101. The bushing 20 is fixed to an external member 40. For example, the outer side of the bushing 20 is provided with an external thread for connecting to the external member 40, and the external member 40 is screwed in by the external thread. The bushing 20 is slidably fitted onto the guide structure 12, so that when the bushing 20 is fixed to the external member 40, the guide structure 12 can move directionally within the bushing 20. Furthermore, in the length direction, the bushing 20 and the guide structure 12 are elastically connected. The top cover 30 is connected to the guide structure 12 at the other end of the bushing 20. The top cover 30 is provided with a transition channel 301 that connects to the medium flow channel 102. The opening 302 of the transition channel 301 is located on the side of the top cover 30, and the top cover 30 is provided with a sealing structure 31 that cooperates with the bushing 20 on the outside of the opening 302. When the top cover 30 moves away from the first end, the medium in the cavity 101 can flow out through the transition channel 301 to form a connected state. When the top cover 30 moves in the opposite direction, it can block the connection between the transition channel 301 and the outside, forming a self-sealing state.

[0028] In simple terms, when an external force is applied to the first end of the housing 10, pushing the housing 10 and the top cover 30 away from the first end, the self-sealing cup opens, and the medium can flow sequentially through the suction nozzle 11, the cavity 101, the medium flow channel 102, and the transfer flow channel 301, and finally exit the self-sealing cup-shaped structure through the opening 302 on the transfer flow channel 301, forming a connected state. When the external force is removed, due to the elastic connection between the bushing 20 and the guide structure 12 in the length direction, under the rebound action, the top cover 30 and the housing 10 move in the opposite direction to reset, and the sealing structure 31 and the bushing 20 cooperate to form a self-sealing state again, blocking the connection between the cavity 101 and the outside. Therefore, the dynamic sealing self-sealing cup-shaped structure provided in this application can not only form a dynamic self-sealing, but also has a compact and simple overall structure, making it easy to disassemble, repair, and maintain.

[0029] In one embodiment, the guide structure 12 is a connecting shaft, and the guide structure 12 is detachably connected to the second end. The top cover 30 is also detachably connected to the connecting shaft, thereby facilitating installation, disassembly, and maintenance.

[0030] In one embodiment, the medium flow channel 102 is tapered at one end near the cavity 101, and the outer diameter of the tapered shape gradually decreases from one end near the cavity to the other end. The tapered structure can limit the flow of the medium from the cavity 101 to the medium flow channel 102.

[0031] In one embodiment, there is one or more openings 302. When there are multiple openings 302, the openings 302 are radially symmetrically distributed on the top cover 30. For example, two openings 302 are opened in opposite straight directions, or three to six openings 302 are evenly started in the radial plane. It can be flexibly processed according to actual needs.

[0032] In one embodiment, the sealing structure 31 is a sloping flexible structure, and the end of the bushing 20 away from the housing 10 has an arc-shaped transition structure on its inner side that cooperates with the sealing structure 31, resulting in a good sealing effect.

[0033] In one embodiment, a sealing sleeve 21 is embedded within the bushing 20 in a sealed manner, and the sealing sleeve 21 slides in conjunction with the guide structure 12. This improves the sealing reliability between the bushing 20 and the guide structure 12, and allows for flexible replacement of the sealing sleeve 21 when necessary. The guide structure 12 has a limiting step 13 at one end near the housing 10, wherein the limiting step 13 is directly opposite the bushing 20, and the bushing 20 is elastically connected to the limiting step 13 on its outer side by an elastic element 22, wherein the elastic element 22 is preferably a spring, and the self-sealing of the self-sealing cup-shaped structure is achieved by the rebound of the elastic element 22.

[0034] The limiting step 13 can also be a double-step structure, in which the small step faces the bushing 20, and the outer diameter of the large step is larger than that of the small step. At the same time, one end of the elastic element 22 abuts against the large step, and the other end of the elastic element 22 abuts against the outer ear ring on the outside of the bushing 20. This not only serves as an elastic connection, but also provides a limit limiting function when the housing 10 is moved by external force through the cooperation between the small step and the bushing 20, thus preventing the guide structure 12 from excessively compressing the elastic element 22 and shortening its service life.

[0035] In one embodiment, the first end is detachably connected to the base 14, and the suction nozzle 11 is located inside the base 14 to facilitate the disassembly, assembly, and maintenance of the suction nozzle 11.

[0036] In one embodiment, the housing 10 has a double-layer structure, including a transparent plastic layer 110 on the inner layer and a stainless steel layer 120 on the outer layer. The stainless steel layer 120 has a viewing window (not shown in the figure), which allows for easy viewing of the medium inside the housing cavity 101.

[0037] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A dynamically sealed self-sealing cup-shaped structure, characterized in that, include: The housing is cup-shaped and has a cavity. The housing has a first end and a second end opposite each other in the length direction. The first end is provided with a suction nozzle communicating with the cavity. The second end is coaxially extended with a guide structure. The guide structure is provided with a medium flow channel communicating with the cavity. A bushing is fixed to an external component, the bushing is slidably fitted onto the guide structure, and the bushing and the guide structure are elastically connected in the length direction; The top cover is connected to the guide structure at the other end of the bushing. The top cover has a transition channel that communicates with the medium flow channel. The opening of the transition channel is located on the side of the top cover. The top cover has a sealing structure that cooperates with the bushing on the outside of the opening. When the top cover moves away from the first end, the medium in the shell cavity can flow out through the transition channel to form a communication state. When the top cover moves in the opposite direction, it can block the communication between the transition channel and the outside world to form a self-sealing state.

2. The dynamic sealing self-sealing cup-shaped structure as described in claim 1, characterized in that, The guide structure is a connecting shaft, and the guide structure is detachably connected to the second end. The top cover and the connecting shaft are detachably connected.

3. The dynamic sealing self-sealing cup-shaped structure as described in claim 2, characterized in that, The medium flow channel is tapered at one end near the shell cavity, and the outer diameter of the tapered shape gradually decreases from one end near the shell cavity to the other end.

4. The dynamic sealing self-sealing cup-shaped structure as described in claim 2, characterized in that, The opening is one or more.

5. The dynamic sealing self-sealing cup-shaped structure as described in claim 4, characterized in that, When multiple openings are provided, the openings are radially symmetrically distributed on the top cover.

6. The dynamic sealing self-sealing cup-shaped structure as described in claim 2, characterized in that, The sealing structure is a sloping flexible structure, and the end of the bushing away from the housing has an arc-shaped transition structure on its inner side that matches the sealing structure.

7. The dynamic sealing self-sealing cup-shaped structure as described in claim 2, characterized in that, The bushing is fitted with a sealing sleeve in a sealed manner. The sealing sleeve is slidably engaged with the guide structure. The guide structure has a limiting step at one end near the housing. The limiting step is directly opposite the bushing. The bushing is elastically connected to the limiting step on the outside by an elastic element.

8. The dynamically sealed self-sealing cup-shaped structure as described in claim 7, characterized in that, The elastic element is a spring.

9. The dynamic sealing self-sealing cup-shaped structure as described in claim 1, characterized in that, The first end is detachably connected to a base, and the suction nozzle is located inside the base.

10. The dynamic sealing self-sealing cup-shaped structure as described in claim 1, characterized in that, The shell has a double-layer structure, including an inner transparent plastic layer and an outer stainless steel layer, with a viewing window in the stainless steel layer.

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