CN214577607U - Bidirectional sealing structure and compressor - Google Patents
Bidirectional sealing structure and compressor Download PDFInfo
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- CN214577607U CN214577607U CN202120061204.1U CN202120061204U CN214577607U CN 214577607 U CN214577607 U CN 214577607U CN 202120061204 U CN202120061204 U CN 202120061204U CN 214577607 U CN214577607 U CN 214577607U
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Abstract
The utility model provides a two-way seal structure and compressor for solve the two-way sealed problem of compressor among the prior art. A bi-directional sealing structure comprising: the middle packing box is provided with a containing counter bore; the sealing ring of the first sealing ring group is provided with a lap opening, and the sealing ring of the first sealing ring group is hooped and arranged on the movable shaft through a tension spring; the sealing rings of the second sealing ring group are of a three-flap structure, and the sealing rings of the second sealing ring group are tightly hooped and arranged on the movable shaft through tension springs; a gland pressing the first seal ring set and the second seal ring set in the accommodating counter bore; the second sealing ring group comprises an axial extrusion structure, and the axial extrusion structure can expand in two axial directions to form the first sealing ring group and the second sealing ring group. Automatic compensation and bidirectional sealing can be realized.
Description
Technical Field
The utility model relates to a compressor field especially relates to a two-way seal structure and compressor.
Background
The traditional compressor middle packing is used for sealing residual process gas leaked from a main packing in a middle connecting cylinder and preventing the process gas from entering a compressor body.
How to realize avoiding the oil gas of fuselage to enter into the cylinder, in the process gas that will avoid the cylinder simultaneously again enters into the fuselage, becomes the technical problem who waits to solve.
Disclosure of Invention
In view of the above shortcomings of the prior art, an object of the present invention is to provide a two-way sealing structure and a compressor, which are used for solving the problem of two-way sealing of the compressor in the prior art.
To achieve the above and other related objects, the present invention provides a two-way sealing structure, including:
the middle packing box is provided with a containing counter bore;
the sealing ring of the first sealing ring group is provided with a lap opening, and the sealing ring of the first sealing ring group is hooped and arranged on the movable shaft through a tension spring;
the sealing rings of the second sealing ring group are of a three-flap structure, and the sealing rings of the second sealing ring group are tightly hooped and arranged on the movable shaft through tension springs;
a gland pressing the first seal ring set and the second seal ring set in the accommodating counter bore;
the second sealing ring group comprises an axial extrusion structure, and the axial extrusion structure can expand in two axial directions to form the first sealing ring group and the second sealing ring group.
Optionally, the first sealing ring set includes at least two first sealing rings, and the second sealing ring set is located between the first sealing rings.
Optionally, the second sealing ring set includes two inner three-segment sealing rings and one outer three-segment sealing ring;
the two inner three-piece sealing rings are axially arranged in parallel and adjacently, the adjacent sides of the two inner three-piece sealing rings close to the periphery are provided with slope structures, the two slope structures form a V-shaped groove, and the V-shaped groove is continuous in the circumferential direction;
the three lamella sealing rings inboard in outside is equipped with V-arrangement arch, V-arrangement arch is continuous in circumference, V-arrangement arch with V-arrangement recess cooperation, three lamella sealing rings in outside by the extension spring cramps.
Optionally, the slope structure outside is equipped with radial plane portion, the protruding outside of V-arrangement is equipped with thickness portion such as axial, thickness portion such as axial with radial plane portion contact cooperation.
Optionally, the inner three-segment sealing ring and the first sealing ring are connected through a positioning pin, and the positioning pin is axially arranged.
Optionally, the nitrogen filling device further comprises a nitrogen filling channel, and the nitrogen filling channel is communicated with the accommodating counter bore.
A compressor comprising said bi-directional sealing structure;
the cylinder component, the connecting cylinder and the machine body are sequentially arranged in the machine body, and the bidirectional sealing structure is arranged between the connecting cylinder and the machine body and used for sealing the central shaft.
Optionally, the cylinder block and the central shaft are sealed by a main packing.
Optionally, the body and the central shaft are sealed by a wiper packing.
Optionally, the connecting cylinder and the machine body are both provided with exhaust valves.
As described above, the utility model discloses a two-way seal structure and compressor has following beneficial effect at least:
through the setting of first sealing washer group and second sealing washer group, set up axial extrusion structure at second sealing washer group simultaneously for second sealing washer group can the axial produce the tight seal that expands, makes gaseous difficult follow the terminal surface contact surface and leaks, and it can realize the two-way sealed of compressor.
Drawings
Fig. 1 is a schematic view of the two-way sealing structure of the present invention.
Fig. 2 is a schematic view of the compressor of the present invention.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1-2. It should be understood that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that can be achieved. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.
Referring to fig. 1, the present invention provides an embodiment of a two-way sealing structure, including: the packing structure comprises a middle packing box 1, a first sealing ring group, a second sealing ring group 3 and a gland 4, wherein a containing counter bore 11 is arranged on the middle packing box 1; the sealing ring of the first sealing ring group is provided with a lap opening, and the sealing ring of the first sealing ring group is hooped and arranged on the movable shaft through a tension spring 5; the sealing ring of the second sealing ring group 3 is of a three-flap structure, and the sealing ring of the second sealing ring group 3 is hooped and arranged on the movable shaft through a tension spring 5; the gland 4 presses the first sealing ring group and the second sealing ring group 3 in the accommodating counter bore 11; the second sealing ring group 3 comprises an axial extrusion structure, and the axial extrusion structure can expand tightly in two axial directions, namely the first sealing ring group and the second sealing ring group 3. Through the setting of first sealing washer group and second sealing washer group 3, set up axial extrusion structure at second sealing washer group 3 simultaneously for second sealing washer group 3 can the axial produce the tight seal that expands, makes gaseous difficult follow the terminal surface contact surface and leaks, and it can realize the two-way sealed of compressor.
In this embodiment, referring to fig. 1, the first sealing ring set includes at least two first sealing rings 21, and the second sealing ring set 3 is located between the first sealing rings 21. Optionally, the second sealing ring set 3 includes two inner three-piece sealing rings 31 and one outer three-piece sealing ring 32; the two inner three-piece sealing rings 31 are axially arranged in parallel and adjacently, the adjacent sides of the two inner three-piece sealing rings 31 close to the outer periphery are provided with slope structures, the two slope structures form a V-shaped groove 310, and the V-shaped groove 310 is continuous in the circumferential direction; the inboard three lamella sealing rings 32 in outside is equipped with V-arrangement and protrudingly 320, V-arrangement is protruding 320 and is continuous in circumference, V-arrangement is protruding 320 with V-arrangement recess 310 cooperates, three lamella sealing rings 32 in outside are cramped by extension spring 5. When the seal rings are worn, the seal rings are 5, and meanwhile, the seal rings are of a three-lobe structure, so that wear compensation can be performed within a certain range, the compensation is radial supplement on one hand, and axial compensation can be realized due to the matching of the V-shaped grooves 310 and the V-shaped protrusions 320 on the other hand, and omnibearing sealing is guaranteed.
In this embodiment, referring to fig. 1, a radial plane portion 311 is disposed outside the slope structure, an axial equal-thickness portion is disposed outside the V-shaped protrusion 320, and the axial equal-thickness portion is in contact fit with the radial plane portion 311. It can increase the structural strength of the outer three-piece sealing ring 32 and can also ensure the compensation effect.
In this embodiment, referring to fig. 1, the inner three-piece sealing ring 31 and the first sealing ring 21 are connected by a positioning pin 6, and the positioning pin 6 is axially disposed. The positioning pin 6 arranged in the axial direction can prevent the first seal ring 21 and the inner three-piece seal ring 31 from being displaced.
In this embodiment, please refer to fig. 1, further comprising a nitrogen charging channel 7, wherein the nitrogen charging channel 7 is communicated with the accommodating counterbore 11. The nitrogen charging channel 7 is arranged, when the two-way sealing structure leaks, leaked gas can be diluted by nitrogen and then exhausted together through the exhaust valve.
A compressor, please refer to fig. 2, comprising the bidirectional sealing structure according to any of the above embodiments; still include center pin 8, cylinder part 9, connecting cylinder 10 and fuselage 12, center pin 8 wears in proper order in cylinder part 9, connecting cylinder 10 and the fuselage 12, connecting cylinder 10 with be equipped with between the fuselage 12 through two-way seal structure 81 is right center pin 8 seals. Optionally, the cylinder block 9 and the central shaft 8 are sealed by a main packing 82. Optionally, the body 12 and the central shaft 8 are sealed by a wiper seal 83. The main packing 82 seal and the oil scraping packing 83 seal can be selected from conventional structures and are not described herein.
In this embodiment, referring to fig. 2, the connecting cylinder 10 and the body 12 are both provided with an exhaust valve 84. The exhaust valve 84 is capable of exhausting the gas in the chamber as required.
To sum up, the utility model discloses a first sealing washer 21 group 2 and second sealing washer group 3's setting sets up axial extrusion structure at second sealing washer group 3 simultaneously for second sealing washer group 3 can the axial produce expand tightly sealed, makes gaseous difficult follow terminal surface contact face to leak, and it can realize the two-way sealed of compressor. The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A bi-directional sealing structure, comprising:
the middle packing box is provided with a containing counter bore;
the sealing ring of the first sealing ring group is provided with a lap opening, and the sealing ring of the first sealing ring group is hooped and arranged on the movable shaft through a tension spring;
the sealing rings of the second sealing ring group are of a three-flap structure, and the sealing rings of the second sealing ring group are tightly hooped and arranged on the movable shaft through tension springs;
a gland pressing the first seal ring set and the second seal ring set in the accommodating counter bore;
the second sealing ring group comprises an axial extrusion structure, and the axial extrusion structure can expand in two axial directions to form the first sealing ring group and the second sealing ring group.
2. The bi-directional sealing structure of claim 1, wherein: the first sealing ring group comprises at least two first sealing rings, and the second sealing ring group is located between the first sealing rings.
3. The bi-directional sealing structure of claim 2, wherein: the second sealing ring group comprises two inner three-flap sealing rings and one outer three-flap sealing ring;
the two inner three-piece sealing rings are axially arranged in parallel and adjacently, the adjacent sides of the two inner three-piece sealing rings close to the periphery are provided with slope structures, the two slope structures form a V-shaped groove, and the V-shaped groove is continuous in the circumferential direction;
the three lamella sealing rings inboard in outside is equipped with V-arrangement arch, V-arrangement arch is continuous in circumference, V-arrangement arch with V-arrangement recess cooperation, three lamella sealing rings in outside by the extension spring cramps.
4. The bi-directional sealing structure of claim 3, wherein: the slope structure outside is equipped with radial plane portion, the protruding outside of V-arrangement is equipped with thickness portion such as axial, thickness portion such as axial with radial plane portion contact cooperation.
5. The bi-directional sealing structure of claim 3, wherein: the inner three-piece sealing ring is connected with the first sealing ring through a positioning pin, and the positioning pin is axially arranged.
6. The bi-directional sealing structure of claim 1, wherein: the nitrogen filling device also comprises a nitrogen filling channel, and the nitrogen filling channel is communicated with the accommodating counter bore.
7. A compressor, characterized by: comprising a bi-directional sealing structure according to any of claims 1-6;
the cylinder component, the connecting cylinder and the machine body are sequentially arranged in the machine body, and the bidirectional sealing structure is arranged between the connecting cylinder and the machine body and used for sealing the central shaft.
8. The compressor of claim 7, wherein: the cylinder block and the center shaft are sealed by a main packing.
9. The compressor of claim 7, wherein: the machine body and the central shaft are sealed through oil scraping packing.
10. A compressor according to any one of claims 7 to 9, wherein: the connecting cylinder and the machine body are both provided with exhaust valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120061204.1U CN214577607U (en) | 2021-01-11 | 2021-01-11 | Bidirectional sealing structure and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120061204.1U CN214577607U (en) | 2021-01-11 | 2021-01-11 | Bidirectional sealing structure and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214577607U true CN214577607U (en) | 2021-11-02 |
Family
ID=78368164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120061204.1U Active CN214577607U (en) | 2021-01-11 | 2021-01-11 | Bidirectional sealing structure and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214577607U (en) |
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2021
- 2021-01-11 CN CN202120061204.1U patent/CN214577607U/en active Active
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