CN103542091B - Seal ring and there is the helical-lobe compressor of sealing ring - Google Patents
Seal ring and there is the helical-lobe compressor of sealing ring Download PDFInfo
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- CN103542091B CN103542091B CN201210238140.3A CN201210238140A CN103542091B CN 103542091 B CN103542091 B CN 103542091B CN 201210238140 A CN201210238140 A CN 201210238140A CN 103542091 B CN103542091 B CN 103542091B
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Abstract
The invention provides a kind of seal ring and there is the helical-lobe compressor of sealing ring, wherein, seal ring comprises body (10), body (10) has the first end face (11) and the second end face (12), first end face (11) and the second end face (12) are oppositely arranged along the axial direction of seal ring, and first end face (11) of body (10) and/or the second end face (12) are provided with the annular recess (20) that the circumference along seal ring extends.Present invention efficiently solves helical-lobe compressor running in prior art unstable, the problem that rate of fault is high.
Description
Technical field
The present invention relates to Compressor Technology field, in particular to a kind of seal ring and the helical-lobe compressor with sealing ring.
Background technique
In helical-lobe compressor, one end of guiding valve is provided with cylinder body cylinder body, in cylinder body, be provided with the piston assembly for pondage, the existing structure adopting seal ring to add O type circle at present in the art comes the gap between control piston assembly and cylinder body, thus reaches predetermined sealing purpose.
Because O type circle self structure is single, if when O type circle is arranged on piston assembly, make pretension between piston assembly and the inwall of cylinder body excessive, then there will be piston assembly and run the phenomenons such as not smooth, stuck; O type circle there will be wearing and tearing after long-term use, occurs the excesssive gap between piston assembly and the inwall of cylinder body, then the problem such as compressor can be caused not load, can not unload.Cause helical-lobe compressor running unstable, rate of fault is high.
Further, seal ring and O type circle adopt polytetrafluoroethylmaterial material, and the outer diameter tolerance of seal ring (probably ± about 0.5mm) is not easy to control, and manufacturing efficiency is low.
Summary of the invention
The present invention aims to provide a kind of seal ring and has the helical-lobe compressor of sealing ring, unstable to solve helical-lobe compressor running in prior art, the problem that rate of fault is high.
To achieve these goals, according to an aspect of the present invention, provide a kind of seal ring, comprise body, body has the first end face and the second end face, first end face and the second end face are oppositely arranged along the axial direction of seal ring, and the first end face of body and/or the second end face are provided with the annular recess that the circumference along seal ring extends.
Further, it is sealed lip that body is positioned at annular recess along the part outside seal ring radial direction, it is stuffing box gland portion that body is positioned at annular recess along the part inside seal ring radial direction, and the part of body between sealed lip and stuffing box gland portion is joint.
Further, the distance that sealed lip extends along the radial direction of seal ring is the first distance, and sealed lip is second distance along the axially extended distance of seal ring, and the first distance is less than or equal to 0.4 times of second distance.
Further, annular recess comprises: the first groove, and the circumference along seal ring is arranged on the first end face with extending; Second groove, the axis along seal ring is arranged on the second end face with extending; First groove and the second groove are oppositely arranged, and stuffing box gland portion is the 3rd distance along the axially extended distance of seal ring, and joint is the 4th distance along the axially extended distance of seal ring, and the 4th distance is greater than or equal to 0.5 times of the 3rd distance.
Further, sealed lip deviates from the surface of the axis of seal ring is concave arc shape.
Further, the two ends that the first distance is extended to sealed lip along seal ring axial direction by the middle part of sealed lip reduce gradually.
Further, the distance that joint extends along the radial direction of seal ring is the 5th distance, and the 5th distance is greater than or equal to 0.25 times of second distance, and the 5th distance is less than or equal to second distance.
Further, annular recess place is provided with diapire and two annular sidewalls be oppositely arranged, and diapire and annular sidewall form annular recess, have arcwall between annular sidewall and diapire joint.
Further, the material of seal ring adopts rubber or synthetic resin.
According to a further aspect in the invention, provide a kind of helical-lobe compressor, comprise cylinder body and piston assembly, piston assembly is arranged in cylinder body, helical-lobe compressor also comprises above-mentioned seal ring, and seal ring to be arranged between piston assembly and the inwall of cylinder body and to be fixedly connected on piston assembly.
Apply technological scheme of the present invention, seal ring comprises body, body has the first end face and the second end face, and the first end face and the second end face are oppositely arranged along the axial direction of seal ring, and the first end face of body and/or the second end face are provided with the annular recess that the circumference along seal ring extends.In seal ring using process, seal ring is arranged between the piston assembly of helical-lobe compressor and cylinder body, carry out loading or in uninstall process at compressor, the pressure of oil pressure or air pressure acts on annular recess, on the inwall making seal ring be fitted in cylinder body by pressure effect and on piston assembly, installing the seal ring of the present embodiment makes not need to make the pretension amount of the piston assembly moon of helical-lobe compressor between cylinder body excessive, used up by pressure and can realize good sealing, simultaneously, after seal wears, the remainder of seal ring mends the position of wearing and tearing under the effect of the pressure, effectively ensure that sealing, sealing O type circle compared to existing technology, the seal ring of the present embodiment makes compressor operating process more stable, failure rate is low.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the cross-sectional schematic of the embodiment of seal ring of the present invention;
Fig. 2 shows the A place enlarged diagram of the seal ring of Fig. 1; And
Fig. 3 shows the internal structure schematic diagram of the embodiment of helical-lobe compressor of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the invention provides the embodiment of seal ring, the seal ring of the present embodiment comprises body 10, body 10 has the first end face 11 and the second end face 12, first end face 11 and the second end face 12 are oppositely arranged along the axial direction of seal ring, and the first end face 11 of body 10 and/or the second end face 12 are provided with the annular recess 20 that the circumference along seal ring extends.
In seal ring using process, seal ring is arranged between the piston assembly of helical-lobe compressor and cylinder body, carry out loading or in uninstall process at compressor, the pressure of oil pressure or air pressure acts on annular recess, on the inwall making seal ring be fitted in cylinder body by pressure effect and on piston assembly, installing the seal ring of the present embodiment makes not need to make the pretension amount of the piston assembly moon of helical-lobe compressor between cylinder body excessive, used up by pressure and can realize good sealing, simultaneously, after seal wears, the remainder of seal ring mends the position of wearing and tearing under the effect of the pressure, effectively ensure that sealing, sealing O type circle compared to existing technology, the seal ring of the present embodiment makes compressor operating process more stable, failure rate is low.
As shown in Figure 2, preferably, it is sealed lip 13 that body 10 is positioned at annular recess 20 along the part outside seal ring radial direction, it is stuffing box gland portion 14 that body 10 is positioned at annular recess 20 along the part inside seal ring radial direction, and the part of body 10 between sealed lip 13 and stuffing box gland portion 14 is joint 15.
Preferably, the distance that sealed lip 13 extends along the radial direction of seal ring is the first distance a, and sealed lip 13 is second distance b along the axially extended distance of seal ring, and the first distance a is less than or equal to 0.4 times of second distance b.The thickness of the first distance a and sealed lip 13, the width of second distance b and sealed lip 13, the thickness setting sealed lip like this compares with width to ensure seal request.
Annular recess 20 place is provided with diapire and two annular sidewalls be oppositely arranged, and diapire and annular sidewall form annular recess 20, have arcwall between annular sidewall and diapire joint.The material of seal ring adopts rubber or synthetic resin.Wherein, the arcwall between annular sidewall and diapire joint makes the pressure dissipation at annular recess 20 place, avoids stress to concentrate.The material of seal ring makes seal ring outer diameter tolerance easily control, and manufacturing efficiency is high.
Preferably, the annular recess 20 of the seal ring in this enforcement comprises the first groove 21 and the second groove 23, first groove 21 is arranged on the first end face 11 along the circumference of seal ring with extending, second groove 23 is arranged on the second end face 12 along the axis of seal ring with extending, first groove 21 and the second groove 23 are oppositely arranged, stuffing box gland portion 14 is the 3rd distance c along the axially extended distance of seal ring, joint 15 is the 4th distance d along the axially extended distance of seal ring, and the 4th distance d is greater than or equal to 0.5 times of the 3rd distance c.The two ends that first distance a is extended to sealed lip 13 along seal ring axial direction by the middle part of sealed lip 13 reduce gradually.Sealed lip 13 deviates from the surface 16 of the axis of seal ring in concave arc shape.
Wherein, the concave arc shape of sealed lip 13 surface 16, by the pressure effect at annular recess place, deforms when fitting to the inwall of cylinder body of compressor, and makes surface 16 be properly fit onto on inwall, add seal degree, and not easily come off from inwall.The width dimensions in the 3rd distance c and stuffing box gland portion 14, the width dimensions of the 4th distance d and joint 15, in most preferred a kind of situation, as d >=0.5 × c, the intensity of seal ring in movement process is best.Wherein, the distance that joint 15 extends along the radial direction of seal ring is the 5th distance e, and the 5th distance e is greater than or equal to 0.25 times of second distance b, and the 5th distance e is less than or equal to second distance b.The thickness of the 5th distance e and joint 15, preferably, the relation formula of the 5th distance e and second distance b is: 0.5 × b≤e≤b.It should be noted that, the annular recess 20 of the present embodiment comprises two grooves, is specially the first groove 21 and the second groove 23, but as the case may be, the quantity of groove also can be more than 1 or 3, all can solve corresponding technical problem.
Present invention also offers the embodiment of helical-lobe compressor, specifically see Fig. 3, the helical-lobe compressor of the present embodiment, comprise cylinder body 40 and piston assembly 50, piston assembly 50 is arranged in the inner chamber of cylinder body 40, helical-lobe compressor also comprises the seal ring of above-described embodiment, and seal ring to be arranged between piston assembly 50 and the inwall of the inner chamber of cylinder body 40 and to be fixedly connected with on the piston assembly 50.The helical-lobe compressor running of the present embodiment is stablized, failure rate is low.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a seal ring, comprise body (10), described body (10) has the first end face (11) and the second end face (12), described first end face (11) is oppositely arranged with the axial direction of described second end face (12) along described seal ring, it is characterized in that, first end face (11) of described body (10) and/or the second end face (12) are provided with the annular recess (20) that the circumference along described seal ring extends, it is sealed lip (13) that described body (10) is positioned at described annular recess (20) along the part outside described seal ring radial direction, it is stuffing box gland portion (14) that described body (10) is positioned at described annular recess (20) along the part inside described seal ring radial direction, described body (10) part be positioned between described sealed lip (13) and described stuffing box gland portion (14) is joint (15), the distance that described sealed lip (13) extends along the radial direction of described seal ring is the first distance a, described sealed lip (13) is second distance b along the axially extended distance of described seal ring, relation between described first distance a and described second distance b meets following formula: a≤0.4b.
2. seal ring according to claim 1, is characterized in that, described annular recess (20) comprising:
First groove (21), the circumference along described seal ring is arranged on described first end face (11) with extending;
Second groove (23), the axis along described seal ring is arranged on described second end face (12) with extending;
Described first groove (21) and the second groove (23) are oppositely arranged, described stuffing box gland portion (14) is the 3rd distance c along the axially extended distance of described seal ring, described joint (15) is the 4th distance d along the axially extended distance of described seal ring, and the relation between described 4th distance d and described 3rd distance c meets following formula: d >=0.5c.
3. seal ring according to claim 1, is characterized in that, described sealed lip (13) deviates from the surface (16) of the axis of described seal ring in concave arc shape.
4. seal ring according to claim 1, is characterized in that, the two ends that described first distance a is extended along described seal ring axial direction to described sealed lip (13) by the middle part of described sealed lip (13) reduce gradually.
5. seal ring according to claim 1, it is characterized in that, the distance that described joint (15) extends along the radial direction of described seal ring is the 5th distance e, and the relation between described 5th distance e and described second distance b meets following formula: 0.25b≤e≤b.
6. seal ring according to claim 1, it is characterized in that, described annular recess (20) place is provided with diapire and two annular sidewalls be oppositely arranged, described diapire and described annular sidewall form described annular recess (20), have arcwall between described annular sidewall and described diapire joint.
7. seal ring according to claim 1, is characterized in that, the material of described seal ring adopts rubber or synthetic resin.
8. a helical-lobe compressor, comprise cylinder body (40) and piston assembly (50), described piston assembly (50) is arranged in described cylinder body (40), it is characterized in that, described helical-lobe compressor also comprises the seal ring according to any one of the claims 1 to 7, is fixedly connected on described piston assembly (50) between the inwall that described seal ring is arranged on described piston assembly (50) and described cylinder body (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238140.3A CN103542091B (en) | 2012-07-10 | 2012-07-10 | Seal ring and there is the helical-lobe compressor of sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238140.3A CN103542091B (en) | 2012-07-10 | 2012-07-10 | Seal ring and there is the helical-lobe compressor of sealing ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542091A CN103542091A (en) | 2014-01-29 |
| CN103542091B true CN103542091B (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210238140.3A Active CN103542091B (en) | 2012-07-10 | 2012-07-10 | Seal ring and there is the helical-lobe compressor of sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103542091B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909797A (en) * | 2016-06-22 | 2016-08-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil seal, sealing structure and motor |
| CN111946826B (en) * | 2020-08-25 | 2022-05-24 | 珠海格力电器股份有限公司 | Oil seal device and transmission |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806137A (en) * | 1970-03-04 | 1974-04-23 | Ramsey Corp | Resilient plastic piston ring |
| GB1356703A (en) * | 1972-01-06 | 1974-06-12 | Girling Ltd | Pistons |
| AT354204B (en) * | 1976-03-13 | 1979-12-27 | Freudenberg Carl Fa | SELF-LOCKING SEAL |
| CN2436720Y (en) * | 2000-08-23 | 2001-06-27 | 杨彬 | X type oil seal for piston |
| CN101680546A (en) * | 2007-07-26 | 2010-03-24 | 威伯科有限公司 | Pneumatic component |
| CN201851304U (en) * | 2010-10-21 | 2011-06-01 | 珠海格力电器股份有限公司 | Piston assembly used in screw compressor and compressor using same |
| CN202646681U (en) * | 2012-07-10 | 2013-01-02 | 珠海格力电器股份有限公司 | Sealing ring and screw compressor with sealing ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0512844U (en) * | 1991-07-30 | 1993-02-19 | 日東工器株式会社 | Seal ring |
-
2012
- 2012-07-10 CN CN201210238140.3A patent/CN103542091B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806137A (en) * | 1970-03-04 | 1974-04-23 | Ramsey Corp | Resilient plastic piston ring |
| GB1356703A (en) * | 1972-01-06 | 1974-06-12 | Girling Ltd | Pistons |
| AT354204B (en) * | 1976-03-13 | 1979-12-27 | Freudenberg Carl Fa | SELF-LOCKING SEAL |
| CN2436720Y (en) * | 2000-08-23 | 2001-06-27 | 杨彬 | X type oil seal for piston |
| CN101680546A (en) * | 2007-07-26 | 2010-03-24 | 威伯科有限公司 | Pneumatic component |
| CN201851304U (en) * | 2010-10-21 | 2011-06-01 | 珠海格力电器股份有限公司 | Piston assembly used in screw compressor and compressor using same |
| CN202646681U (en) * | 2012-07-10 | 2013-01-02 | 珠海格力电器股份有限公司 | Sealing ring and screw compressor with sealing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103542091A (en) | 2014-01-29 |
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