A bidirectional sealing gasket structure

Abstract

The utility model relates to the field of piston assembly discloses a bidirectional sealed intermediate packing structure, including first gland piston assembly, first gland piston assembly outer wall one side is provided with flange piston assembly, first gland piston assembly includes second gland piston assembly, first gland piston assembly and second gland piston assembly and flange piston assembly between all are through first bolt piston assembly fixed connection, first gland piston assembly and second gland piston assembly inner wall one side all are connected with tangential ring piston assembly, tangential ring piston assembly upper end is provided with second spring piston assembly, two tangential ring piston assembly outer wall one side all are connected with spring pad piston assembly. In the utility model, the forced compression is carried out to the compression spring added between two groups of sealing rings, and the main function of nitrogen is to isolate and replace dangerous gas source, and the sealing compression is assisted, and the reliability of intermediate packing work is guaranteed by the structure optimization.

Description

Technical Field

[0001] This utility model relates to the field of piston assemblies, and more particularly to a bidirectional sealing intermediate packing structure. Background Technology

[0002] Traditional intermediate packing seals typically use two sets of tangential rings for sealing. During the sealing process, nitrogen gas with a slight positive pressure needs to be introduced into the two sets of sealing ring assemblies to press the sealing rings together on both sides, thereby achieving bidirectional sealing and gas isolation.

[0003] Therefore, those skilled in the art have provided a bidirectional sealing intermediate packing structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a bidirectional sealing intermediate packing structure. A compression spring is added between the two sets of sealing rings for forced compression. The role of nitrogen is mainly to isolate and replace hazardous gas sources and assist in sealing and compression. This structural optimization ensures the reliability of the intermediate packing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A bidirectional sealing intermediate packing structure includes a first gland piston assembly, wherein a flange piston assembly is provided on one side of the outer wall of the first gland piston assembly. The first cap piston assembly includes a second cap piston assembly. The first cap piston assembly, the second cap piston assembly, and the flange piston assembly are all fixedly connected by a first bolt piston assembly. A tangential ring piston assembly is connected to one side of the inner wall of the first cap piston assembly and the second cap piston assembly. A second spring piston assembly is provided at the upper end of the tangential ring piston assembly. The above technical solution achieves bidirectional sealing and gas isolation through the use of tangential ring assemblies for sealing.

[0006] Furthermore, a spring-pad piston assembly is connected to one side of the outer wall of each of the two tangential ring piston assemblies, and a first spring-pad piston assembly is connected between the two spring-pad piston assemblies. The above technical solution adds a compression spring between the two sets of sealing rings for forced compression. The role of nitrogen is mainly to isolate and replace dangerous gas sources and assist in sealing and compression. This structural optimization ensures the reliability of the intermediate packing.

[0007] Furthermore, a second cylindrical pin piston assembly is connected between the other ends of the two spring pad piston assemblies; The above technical solutions improve the stability of the spring-pad piston assembly connection.

[0008] Furthermore, a first cylindrical pin piston assembly is provided inside the other end of each of the two tangential ring piston assemblies; The above technical solutions improve the stability of the tangential ring piston assembly connection.

[0009] Furthermore, one side of the outer wall of the flange piston assembly is fixed by a second bolt piston assembly, a second gasket piston assembly is provided at the connection between the second bolt piston assembly and the flange piston assembly, and a first gasket piston assembly is provided at the other end of the second bolt piston assembly. The above technical solution ensures that the structure is securely fixed to the piston assembly.

[0010] Furthermore, an O-ring piston assembly is provided between the flange piston assembly and the first gland piston assembly and the second gland piston assembly; The above technical solutions improve the sealing performance of the joints.

[0011] Furthermore, a screw plug piston assembly is provided on one side of the outer wall of the second gland piston assembly; The above technical solution is used to seal and plug the gas injection port.

[0012] Furthermore, the O-ring piston assembly is made of nitrile rubber; The above technical solutions improve the service life of the O-ring piston assembly and enhance the sealing performance at the connection points.

[0013] This utility model has the following beneficial effects: 1. This utility model proposes a bidirectional sealing intermediate packing structure. By setting this structure, a compression spring is added between the two sets of sealing rings for forced compression, so that it can be used for the receiving cylinder component without adding nitrogen. For the receiving cylinder component with adding nitrogen, the role of nitrogen is mainly to isolate and replace the dangerous gas source and assist in sealing and compression. This structural optimization ensures the reliability of the intermediate packing, thereby improving the flexibility of the structure and the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a side sectional view of a bidirectional sealing intermediate packing structure proposed in this utility model; Figure 2 This is a front view of a bidirectional sealing intermediate packing structure proposed in this utility model; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0015] Explanation of reference numerals in the attached figures: 1. First gland; 2. Flange; 3. Spring washer; 4. First spring; 5. Second gland; 6. First bolt; 7. Second spring; 8. Tangential ring; 9. First cylindrical pin; 10. Second cylindrical pin; 11. O-ring; 12. Plug; 13. First gasket; 14. Second gasket; 15. Second bolt. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Reference Figure 1 - Figure 4 This utility model provides a specific implementation method: A bidirectional sealing intermediate packing structure includes a first gland 1, and a flange 2 is provided on one side of the outer wall of the first gland 1; The first gland 1 includes a second gland 5. Both the first gland 1 and the second gland 5 are fixedly connected to the flange 2 by first bolts 6. A tangential ring 8 is connected to one side of the inner wall of both the first gland 1 and the second gland 5. A second spring 7 is installed at the upper end of the tangential ring 8. Sealing is achieved through the tangential ring 8 group, realizing bidirectional sealing and gas isolation. A spring pad 3 is connected to one side of the outer wall of each of the two tangential rings 8. A first spring 4 is connected between the two spring pads 3. A compression spring is added between the two sets of sealing rings for forced compression. The role of nitrogen is mainly to isolate and replace hazardous gas sources and assist in sealing and compression. This structural optimization ensures the reliability of the intermediate packing. A second cylinder is connected between the other ends of the two spring pads 3. Pin 10 improves the stability of the spring washer 3 connection. The other end of the two tangential rings 8 is provided with a first cylindrical pin 9 to improve the stability of the tangential ring 8 connection. The outer wall of the flange 2 is fixed by a second bolt 15. A second gasket 14 is provided at the connection between the second bolt 15 and the flange 2. The other end of the second bolt 15 is provided with a first gasket 13, so that the structure is firmly fixed on the piston assembly. An O-ring 11 is provided between the flange 2 and the first pressure cap 1 and the second pressure cap 5 to improve the sealing of the connection. A screw plug 12 is provided on one side of the outer wall of the second pressure cap 5 to seal the air injection port. The O-ring 11 is made of nitrile rubber to improve the service life of the O-ring 11 and improve the sealing of the connection.

[0018] Working principle: This structure is mainly suitable for double-compartment connecting cylinder components with a piston rod diameter of 85mm and a nitrogen filling pressure of 0.5bar. When using this structure, multiple tangential rings 8 are fixed by the first pressure cap 1 and the second pressure cap 5 with multiple different bolts, and a spring washer 3 is set between the two sets of tangential rings 8, thereby forcibly pressing the multiple tangential rings 8 on both sides. This structure can be used for connecting cylinder components where the intermediate packing is not filled with nitrogen. When nitrogen filling is required, the screw plug 12 is removed and nitrogen is filled into the device to isolate and replace the dangerous gas source and assist in sealing and tightening.

[0019] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0020] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bidirectional sealing intermediate packing structure, comprising a first gland (1), characterized in that: A flange (2) is provided on one side of the outer wall of the first pressure cap (1); The first pressure cover (1) includes a second pressure cover (5). The first pressure cover (1), the second pressure cover (5), and the flange (2) are all fixedly connected by a first bolt (6). A tangential ring (8) is connected to one side of the inner wall of the first pressure cover (1) and the second pressure cover (5). A second spring (7) is provided at the upper end of the tangential ring (8).

2. The bidirectional sealing intermediate packing structure according to claim 1, characterized in that: A spring pad (3) is connected to one side of the outer wall of each of the two tangential rings (8), and a first spring (4) is connected between the two spring pads (3).

3. The bidirectional sealing intermediate packing structure according to claim 2, characterized in that: A second cylindrical pin (10) is connected between the other ends of the two spring pads (3).

4. The bidirectional sealing intermediate packing structure according to claim 1, characterized in that: The other end of each of the two tangential rings (8) is provided with a first cylindrical pin (9).

5. The bidirectional sealing intermediate packing structure according to claim 1, characterized in that: The flange (2) is fixed on one side of its outer wall by a second bolt (15). A second gasket (14) is provided at the connection between the second bolt (15) and the flange (2). A first gasket (13) is provided at the other end of the second bolt (15).

6. The bidirectional sealing intermediate packing structure according to claim 1, characterized in that: An O-ring (11) is provided between the flange (2) and the first gland (1) and the second gland (5).

7. The bidirectional sealing intermediate packing structure according to claim 1, characterized in that: A screw plug (12) is provided on one side of the outer wall of the second pressure cap (5).

8. The bidirectional sealing intermediate packing structure according to claim 6, characterized in that: The O-ring (11) is made of nitrile rubber.

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