Valve sealing structure

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a valve sealing structure which comprises two communicating pipes which are symmetrically arranged, one side of each communicating pipe is fixedly connected with a connecting seat, a mounting groove is formed in each connecting seat, a first-stage sealing air bag is fixedly connected in each mounting groove, and a second-stage sealing air bag is fixedly connected in each first-stage sealing air bag. One side of the first-stage sealing air bag is located on the outer side of the connecting base, a second-stage filling air bag is fixedly connected into the first-stage sealing air bag, and the outer side of the second-stage filling air bag is embedded into the side, located outside, of the first-stage sealing air bag; according to the sealing piece, the gap between the connecting positions of the two connecting bases can be fully wrapped and filled, the connecting position between the two connecting bases is in a tight wrapping state, the connecting position between the two connecting bases is sealed in a filling mode, the sealing and wrapping effect can not be affected by the abrasion condition of the sealing piece, and the sealing piece is not prone to deformation. And the wrapping tightness of the joint between the two connecting seats can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a valve sealing structure. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. When installed between valves and pipelines, they are mostly connected through flanges. During the connection through flanges, the joints are mostly sealed with gaskets. However, during long-term use, the gaskets will age or wear, resulting in a decrease in the sealing effect of the joints, leading to leakage at the joints. Utility Model Content

[0003] The utility model provides a valve sealing structure, which has the characteristic of sealing the connection between two connecting seats by filling, so that the sealing wrapping effect is not affected by the wear or cracking of the seal itself, and helps to improve the wrapping tightness of the connection between the two connecting seats.

[0004] The utility model provides the following technical solutions: a valve sealing structure, comprising two symmetrically arranged connecting tubes, one side of the connecting tubes is fixedly connected to a connecting seat, an installation groove is opened inside the connecting seat, a primary sealing airbag is fixedly connected inside the installation groove, and one side of the primary sealing airbag is located on the outside of the connecting seat, a secondary filling airbag is fixedly connected inside the primary sealing airbag, and the outer side of the secondary filling airbag is embedded in the inside of one side of the primary sealing airbag located on the outside, the secondary filling airbag is filled with sealing filling glue, a conical elastic support plate is provided on one side of the secondary filling airbag, and the conical elastic support plate is located inside the primary sealing airbag, and a limiting ring plate is fixedly connected to the inner side of one of the connecting seats.

[0005] The outer sides of the two symmetrically arranged connection seats are fixedly connected with outer sealing rings by bolts, and the inner sides of the outer sealing rings are fixedly connected with sealing gaskets.

[0006] Wherein, a plurality of reserved installation grooves are provided inside the connecting seat.

[0007] Among them, a plurality of hole-breaking cones are fixedly connected to the edge of the outer side of the connecting seat, and the vertical projection of the hole-breaking cone is located on the inner side of the vertical projection of the connecting seat.

[0008] Wherein, both ends of the conical elastic support plate are fixedly connected with mounting seats, and the conical elastic support plate is fixedly connected to the inner cavity of the primary sealing airbag through the mounting seats.

[0009] The beneficial effect of the utility model is that with the mutual cooperation of the primary sealing airbag and the secondary filling airbag, the sealing filling glue and the piercing cone, a double-layer seal can be provided for the connection between the two connecting seats, wherein the primary sealing airbag is the primary sealing workpiece in the entire sealing structure, and the secondary filling airbag located in the primary sealing airbag forms a secondary seal in the entire sealing structure with the cooperation of the sealing filling glue. By filling the connection between the two connecting seats with the sealing filling glue, the gap between the connection between the two connecting seats can be more fully wrapped and filled, so that the connection between the two connecting seats is in a tightly wrapped state, and the connection between the two connecting seats is sealed by filling, so that the sealing wrapping effect is not affected by the wear or cracking of the seal itself, which helps to improve the wrapping tightness of the connection between the two connecting seats.

[0010] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the utility model when installed in the main view;

[0013] Figure 3 It is a side view structural schematic diagram of the utility model;

[0014] Figure 4 For this utility model Figure 1 A magnified diagram of the details of part A in the middle.

[0015] In the figure: 1. connecting pipe; 11. connecting seat; 111. reserved installation groove; 12. installation groove; 2. primary sealing airbag; 21. secondary filling airbag; 211. sealing filling glue; 22. conical elastic support plate; 221. installation seat; 23. piercing cone; 3. outer sealing ring; 31. sealing pad; 4. limiting ring plate. DETAILED DESCRIPTION

[0016] See also Figure 1-Figure 4The utility model provides the following technical solutions: a valve sealing structure, including two symmetrically arranged connecting pipes 1, one side of the connecting pipe 1 is fixedly connected with a connecting seat 11, the interior of the connecting seat 11 is provided with a mounting groove 12, the interior of the mounting groove 12 is fixedly connected with a primary sealing airbag 2, and one side of the primary sealing airbag 2 is located on the outside of the connecting seat 11, the interior of the primary sealing airbag 2 is fixedly connected with a secondary filling airbag 21, and the outer side of the secondary filling airbag 21 is embedded in the interior of one side of the primary sealing airbag 2 located on the outside, the secondary filling airbag 21 is filled with a sealing filling glue 211, one side of the secondary filling airbag 21 is provided with a conical elastic support plate 22, and the conical elastic support plate 22 is located inside the primary sealing airbag 2, and the inner side of one of the connecting seats 11 is fixedly connected with a limiting ring plate 4.

[0017] In the present embodiment: the connecting pipe 1 forms a connecting component for installation with the valve in cooperation with the connecting seat 11, and the installation groove 12 located in the connecting seat 11 is used to provide installation space for the primary sealing airbag 2, and the primary sealing airbag 2 located in the installation groove 12 is the primary sealing workpiece in the entire sealing structure, which is used to provide an inner seal for the connecting surface in the seal, and at the same time, the primary sealing airbag 2 is used to provide a connecting carrier and installation space for the secondary filling airbag 21, and the secondary filling airbag 21 located in the primary sealing airbag 2 forms a secondary sealing member in the entire sealing structure in cooperation with the sealing filling glue 211, which is used to provide external sealing for the connection in the seal after connection, wherein the secondary filling airbag 21 is used to provide a filling space for the sealing filling glue 211, and the sealing filling glue 211 is used to perform filling-type sealing on the connection of the two connecting seats 11. Moreover, by filling the connection between the two connecting seats 11 with the sealing filling glue 211, the gap between the connection between the two connecting seats 11 can be more fully wrapped and filled, so that the connection between the two connecting seats 11 is in a tightly wrapped state, and the connection between the two connecting seats 11 is sealed by filling, so that the sealing wrapping effect is not affected by the wear or cracking of the seal itself, which helps to improve the wrapping tightness of the connection between the two connecting seats 11, and the conical elastic support plate 22 located on one side of the secondary filling airbag 21 is used to provide support for the side of the primary sealing airbag 2 located on the outside, and the limiting ring plate 4 located on the inner side of one of the connecting seats 11 is used to intercept the sealing filling glue 211 extruded outward when connecting the two connecting seats 11, so as to prevent the sealing filling glue 211 from flowing into the inner cavity of the connecting seat 11.

[0018] The outer sides of two symmetrically arranged connecting seats 11 are fixedly connected with outer sealing rings 3 by bolts, and the inner sides of the outer sealing rings 3 are fixedly connected with sealing gaskets 31; wherein the outer sealing rings 3 and the sealing gaskets 31 form a reinforcement for the connection between the two connecting pipes 1 after the connection and fixation, and at the same time provide external protection for the sealing filling glue 211 wrapped between the connection parts of the two connecting seats 11, thereby reducing the impact of the external environment on the sealing filling glue 211 during long-term use.

[0019] A plurality of reserved installation grooves 111 are provided inside the connecting seat 11 ; the reserved installation grooves 111 are used to provide a connection space between two connecting seats 11 . When the two connecting seats 11 need to be connected, the two connecting seats 11 can be fixed by installing fixing bolts in the reserved installation grooves 111 .

[0020] A plurality of piercing cones 23 are fixedly connected to the edge of the outer side of the connecting seat 11, and the vertical projection of the piercing cone 23 is located on the inner side of the vertical projection of the connecting seat 11; wherein the piercing cone 23 is used to pierce the outside of the secondary filling airbag 21, so that the sealing filling glue 211 in the secondary filling airbag 21 can flow out to the outside, and when installing between the two connecting seats 11, the two connecting seats 11 are docked at this time, and then the fixing bolts are passed through the inside of the installation reserved groove 111, and then the outer sealing ring 3 is sleeved at the connection between the two connecting seats 11, and after the outer sealing ring 3 is sleeved, the fixing bolts in the installation reserved groove 111 are tightened, and finally, after the fixing bolts in the installation reserved groove 111 are tightened, the outer sealing ring 3 can be fixed.

[0021] Both ends of the conical elastic support plate 22 are fixedly connected with mounting seats 221, and the conical elastic support plate 22 is fixedly connected to the inner cavity of the primary sealing airbag 2 through the mounting seats 221; wherein the mounting seats 221 are used to provide a carrier for connecting the conical elastic support plate 22 inside the primary sealing airbag 2.

[0022] The working principle and use process of the utility model are as follows: when installing the valve, first install the two connecting pipes 1 at the ends of the valve and the ends of the pipe respectively, and then fix the two connecting seats 11. When fixing the two connecting seats 11, first connect the two connecting seats 11, and then pass the fixing bolts through the inside of the reserved installation groove 111, and then sleeve the outer sealing ring 3 at the connection of the two connecting seats 11. After the sleeve of the outer sealing ring 3 is completed, tighten the fixing bolts in the reserved installation groove 111. When tightening the reserved installation groove 111, the distance between the two connecting seats 11 is compressed, and in the process of compressing the distance between the two connecting seats 11, the primary sealing airbag 2 located on the outside of the connecting seat 11 is squeezed. At this time, the squeezed primary sealing airbag 2 It is extruded outward and forms a package between the connection parts of the two connecting seats 11. During the process of the primary sealing airbag 2 being extruded outward, the secondary filling airbag 21 is extruded outward synchronously. When the secondary filling airbag 21 is extruded outward to the outer edge of the connecting seat 11, during the continuous extrusion of the secondary filling airbag 21, the piercing cone 23 can pierce the secondary filling airbag 21. At this time, the sealing filling glue 211 in the secondary filling airbag 21 can flow out through the hole. The sealing filling glue 211 after flowing out can fill the gap at the connection part of the two connecting seats 11. After the sealing filling glue 211 is dried, the connection part between the two connecting seats 11 can be sealed. Finally, after the fixing bolts in the installation reserved groove 111 are tightened, the external sealing ring 3 can be fixed.

Claims

1. A valve sealing structure, comprising two symmetrically arranged connecting pipes (1), characterized in that: A connecting seat (11) is fixedly connected to one side of the connecting tube (1), a mounting groove (12) is provided inside the connecting seat (11), a primary sealing airbag (2) is fixedly connected to the inside of the mounting groove (12), and one side of the primary sealing airbag (2) is located outside the connecting seat (11), a secondary filling airbag (21) is fixedly connected to the inside of the primary sealing airbag (2), and the outer side of the secondary filling airbag (21) is embedded inside the side of the primary sealing airbag (2) located outside, the secondary filling airbag (21) is filled with sealing filling glue (211), a conical elastic support plate (22) is provided on one side of the secondary filling airbag (21), and the conical elastic support plate (22) is located inside the primary sealing airbag (2), and a limiting ring plate (4) is fixedly connected to the inner side of one of the connecting seats (11).

2. A valve sealing structure according to claim 1, characterized in that: The outer sides of the two symmetrically arranged connection seats (11) are fixedly connected to outer sealing rings (3) via bolts, and the inner sides of the outer sealing rings (3) are fixedly connected to sealing pads (31).

3. A valve sealing structure according to claim 1, characterized in that: A plurality of reserved installation grooves (111) are provided inside the connection seat (11).

4. A valve sealing structure according to claim 1, characterized in that: A plurality of hole-breaking cones (23) are fixedly connected to the outer edge of the connection seat (11), and the vertical projection of the hole-breaking cones (23) is located on the inner side of the vertical projection of the connection seat (11).

5. A valve sealing structure according to claim 1, characterized in that: Both ends of the conical elastic support plate (22) are fixedly connected to mounting seats (221), and the conical elastic support plate (22) is fixedly connected to the inner cavity of the primary sealing airbag (2) via the mounting seats (221).

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