CN202646681U - Sealing ring and screw compressor with sealing ring - Google Patents
Sealing ring and screw compressor with sealing ring Download PDFInfo
- Publication number
- CN202646681U CN202646681U CN 201220333363 CN201220333363U CN202646681U CN 202646681 U CN202646681 U CN 202646681U CN 201220333363 CN201220333363 CN 201220333363 CN 201220333363 U CN201220333363 U CN 201220333363U CN 202646681 U CN202646681 U CN 202646681U
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- seal ring
- distance
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- face
- sealed lip
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Abstract
The utility model provides a sealing ring and a screw compressor with the sealing ring. The sealing ring comprises a body (10), the body (10) is provided with a first end face (11) and a second end face (12), the first end face (11) and the second end face (12) are oppositely arranged along the axial direction of the sealing ring, and a ring-shaped recessed portion (20) which extends along the circumferential direction of the sealing ring is disposed on the first end face (11) and/or the second end face (12) of the body (10). By means of the sealing ring and the screw compressor with the sealing ring, problems that screw compressors in prior art are unstable during operating and high in failure rate are effectively solved.
Description
Technical field
The utility model relates to the Compressor Technology field, in particular to a kind of seal ring and have the helical-lobe compressor of sealing ring.
Background technique
In the helical-lobe compressor, end at guiding valve is provided with the cylinder body cylinder body, be provided with the piston assembly for pondage in cylinder body, the structure that adopts seal ring to add O type circle at present in the technology is now come the gap between control piston assembly and the cylinder body, thereby reaches predetermined sealing purpose.
Because O type circle self structure is single, if when O type circle is installed in piston assembly, make between the inwall of piston assembly and cylinder body pretension excessive, piston assembly then can occur and move the phenomenons such as not smooth, stuck; O type circle wearing and tearing can occur after long-term the use, the excesssive gap between the inwall of piston assembly and cylinder body occurs, then can cause the problems such as compressor can not load, can not unload.Cause the helical-lobe compressor running unstable, rate of fault is high.
Further, seal ring and O type circle adopt polytetrafluoroethylmaterial material, and the external diameter tolerance of seal ring (probably ± about 0.5mm) is not easy control, and manufacturing efficiency is low.
The model utility content
The utility model aims to provide a kind of seal ring and has the helical-lobe compressor of sealing ring, and is unstable with helical-lobe compressor running in the solution prior art, the problem that rate of fault is high.
To achieve these goals, according to an aspect of the present utility model, a kind of seal ring is provided, comprise body, body has the first end face and the second end face, 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 along the annular reentrant part of the circumferential extension of seal ring.
Further, it is sealed lip along the part outside the seal ring radial direction that body is positioned at annular reentrant part, it is stuffing box gland section along the part of seal ring radial direction inboard that body is positioned at annular reentrant part, and the part of body between sealed lip and stuffing box gland section is joint.
Further, sealed lip is the first distance along the distance of radially extending of seal ring, 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 reentrant part comprises: the first groove, along the circumferential extension of seal ring be arranged on the first end face; The second groove, along extending axially of seal ring be arranged on the second end face; The first groove and the second groove are oppositely arranged, and stuffing box gland section 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, the sealed lip surface that deviates from the axis of seal ring is concave arc shape.
Further, the first distance two ends of being extended to sealed lip along the seal ring axial direction by the middle part of sealed lip reduce gradually.
Further, joint is the 5th distance along the distance of radially extending of seal ring, 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 reentrant part place is provided with diapire and two annular sidewalls that are oppositely arranged, and diapire and annular sidewall form annular reentrant part, have arcwall between annular sidewall and the diapire joint.
Further, the material of seal ring adopts rubber or synthetic resin.
According on the other hand of the present utility model, a kind of helical-lobe compressor is provided, has comprised cylinder body and piston assembly, piston assembly is arranged in the cylinder body, helical-lobe compressor also comprises above-mentioned seal ring, and seal ring is arranged between the inwall of piston assembly and cylinder body and is fixedly connected on the piston assembly.
Use the technical solution of the utility model, 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 along the annular reentrant part of the circumferential extension of seal ring.In the seal ring using process, seal ring is installed between the piston assembly and cylinder body of helical-lobe compressor, compressor load or uninstall process in, the pressure-acting of oil pressure or air pressure is in annular reentrant part, make seal ring be fitted on the inwall of cylinder body and on the piston assembly by pressure-acting, the seal ring that present embodiment is installed makes the pretension amount that does not need to make between the piston assembly moon of the helical-lobe compressor cylinder body excessive, can realize good sealing to the greatest extent by pressure-acting, simultaneously, after seal wears, the remainder of seal ring is mended the position of wearing and tearing under the effect of pressure, effectively guaranteed sealing, sealing O type circle compared to existing technology, the seal ring of present embodiment makes the compressor operating process more stable, failure rate is low.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the embodiment's of seal ring of the present utility model cross-sectional schematic;
Fig. 2 shows the A place enlarged diagram of the seal ring of Fig. 1; And
Fig. 3 shows the embodiment's of helical-lobe compressor of the present utility model internal structure schematic representation.
Embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figure 1, the utility model provides the embodiment of seal ring, the seal ring of present embodiment comprises body 10, body 10 has the first end face 11 and the second end face 12, the 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 and/or second end face 12 of body 10 are provided with along the annular reentrant part 20 of the circumferential extension of seal ring.
In the seal ring using process, seal ring is installed between the piston assembly and cylinder body of helical-lobe compressor, compressor load or uninstall process in, the pressure-acting of oil pressure or air pressure is in annular reentrant part, make seal ring be fitted on the inwall of cylinder body and on the piston assembly by pressure-acting, the seal ring that present embodiment is installed makes the pretension amount that does not need to make between the piston assembly moon of the helical-lobe compressor cylinder body excessive, can realize good sealing to the greatest extent by pressure-acting, simultaneously, after seal wears, the remainder of seal ring is mended the position of wearing and tearing under the effect of pressure, effectively guaranteed sealing, sealing O type circle compared to existing technology, the seal ring of present embodiment makes the compressor operating process more stable, failure rate is low.
As shown in Figure 2, preferably, it is sealed lip 13 along the part outside the seal ring radial direction that body 10 is positioned at annular reentrant part 20, it is stuffing box gland section 14 along the part of seal ring radial direction inboard that body 10 is positioned at annular reentrant part 20, and the part of body 10 between sealed lip 13 and stuffing box gland section 14 is joint 15.
Preferably, sealed lip 13 is first apart from a along the distance of radially extending of seal ring, and sealed lip 13 is second distance b along the axially extended distance of seal ring, and first is less than or equal to 0.4 times of second distance b apart from a.First is the thickness of sealed lip 13 apart from a, and second distance b is the width of sealed lip 13, sets like this thickness of sealed lip and Width to guarantee seal request.
Preferably, the annular reentrant part 20 of the seal ring in this enforcement comprises the first groove 21 and the second groove 23, the first groove 21 along the circumferential extension of seal ring be arranged on the first end face 11, the second groove 23 along extending axially of seal ring be arranged on the second end face 12, the first groove 21 and the second groove 23 are oppositely arranged, stuffing box gland section 14 is the 3rd distance c along the axially extended distance of seal ring, joint 15 is the 4th apart from d along the axially extended distance of seal ring, and the 4th is greater than or equal to 0.5 times of the 3rd distance c apart from d.The first two ends of being extended to sealed lip 13 along the seal ring axial direction by the middle part of sealed lip 13 apart from a reduce gradually.The surface 16 that sealed lip 13 deviates from the axis of seal ring is concave arc shape.
Wherein, the concave arc shape surface 16 of sealed lip 13 is subjected to the pressure-acting at annular reentrant part place, deforms when the inwall of the cylinder body that fits to compressor, and surface 16 is properly fit onto on the inwall, has increased seal degree, and has been difficult for coming off from inwall.The 3rd distance c is the width dimensions of stuffing box gland section 14, and the 4th is the width dimensions of joint 15 apart from d, and in most preferred a kind of situation, when d 〉=0.5 * c, the intensity of seal ring in movement process is best.Wherein, joint 15 is the 5th apart from e along the distance of radially extending of seal ring, and the 5th is greater than or equal to 0.25 times of second distance b apart from e, and the 5th is less than or equal to second distance b apart from e.The 5th apart from e be joint 15 thickness, the 5th relation formula apart from e and second distance b is: 0.5 * b≤e≤b.Of particular note, the annular reentrant part 20 of 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 for more than 1 or 3, all can solve corresponding technical problem.
The utility model also provides the embodiment of helical-lobe compressor, specifically referring to Fig. 3, the helical-lobe compressor of 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 is arranged between the inwall of inner chamber of piston assembly 50 and cylinder body 40 and is fixedly connected on the piston assembly 50.The helical-lobe compressor running of present embodiment is stable, failure rate is low.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. seal ring, comprise body (10), described body (10) has the first end face (11) and the second end face (12), described the first end face (11) is oppositely arranged with the axial direction of described the 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 along the annular reentrant part (20) of the circumferential extension of described seal ring.
2. seal ring according to claim 1, it is characterized in that, it is sealed lip (13) along the part outside the described seal ring radial direction that described body (10) is positioned at described annular reentrant part (20), it is stuffing box gland section (14) along the part of described seal ring radial direction inboard that described body (10) is positioned at described annular reentrant part (20), and the part that described body (10) is positioned between described sealed lip (13) and the described stuffing box gland section (14) is joint (15).
3. seal ring according to claim 2, it is characterized in that, described sealed lip (13) is the first distance (a) along the distance of radially extending of described seal ring, described sealed lip (13) is second distance (b) along the axially extended distance of described seal ring, and described the first distance (a) is less than or equal to 0.4 times of described second distance (b).
4. seal ring according to claim 2 is characterized in that, described annular reentrant part (20) comprising:
The first groove (21), along the circumferential extension of described seal ring be arranged on described the first end face (11);
The second groove (23), along extending axially of described seal ring be arranged on described the second end face (12);
Described the first groove (21) and the second groove (23) are oppositely arranged, described stuffing box gland section (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 described the 4th distance (d) is greater than or equal to 0.5 times of described the 3rd distance (c).
5. seal ring according to claim 2 is characterized in that, the surface (16) that described sealed lip (13) deviates from the axis of described seal ring is concave arc shape.
6. seal ring according to claim 3 is characterized in that, described the first distance (a) is reduced along the two ends that described seal ring axial direction extends to described sealed lip (13) gradually by the middle part of described sealed lip (13).
7. seal ring according to claim 3, it is characterized in that, described joint (15) is the 5th distance (e) along the distance of radially extending of described seal ring, described the 5th distance (e) is greater than or equal to 0.25 times of described second distance (b), and described the 5th distance (e) is less than or equal to described second distance (b).
8. seal ring according to claim 1, it is characterized in that, described annular reentrant part (20) locates to be provided with diapire and two annular sidewalls that are oppositely arranged, described diapire and described annular sidewall form described annular reentrant part (20), have arcwall between described annular sidewall and the described diapire joint.
9. seal ring according to claim 1 is characterized in that, the material of described seal ring adopts rubber or synthetic resin.
10. helical-lobe compressor, comprise cylinder body (40) and piston assembly (50), described piston assembly (50) is arranged in the described cylinder body (40), it is characterized in that, described helical-lobe compressor also comprises each described seal ring in the claims 1 to 9, and described seal ring is arranged between the inwall of described piston assembly (50) and described cylinder body (40) and is fixedly connected on the described piston assembly (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333363 CN202646681U (en) | 2012-07-10 | 2012-07-10 | Sealing ring and screw compressor with sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333363 CN202646681U (en) | 2012-07-10 | 2012-07-10 | Sealing ring and screw compressor with sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646681U true CN202646681U (en) | 2013-01-02 |
Family
ID=47415790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220333363 Withdrawn - After Issue CN202646681U (en) | 2012-07-10 | 2012-07-10 | Sealing ring and screw compressor with sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542091A (en) * | 2012-07-10 | 2014-01-29 | 珠海格力电器股份有限公司 | Sealing ring and screw compressor with same |
| CN105442050A (en) * | 2015-12-29 | 2016-03-30 | 湖南顶立科技有限公司 | Material container applicable to ingot furnace |
-
2012
- 2012-07-10 CN CN 201220333363 patent/CN202646681U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542091A (en) * | 2012-07-10 | 2014-01-29 | 珠海格力电器股份有限公司 | Sealing ring and screw compressor with same |
| CN103542091B (en) * | 2012-07-10 | 2016-04-13 | 珠海格力电器股份有限公司 | Seal ring and there is the helical-lobe compressor of sealing ring |
| CN105442050A (en) * | 2015-12-29 | 2016-03-30 | 湖南顶立科技有限公司 | Material container applicable to ingot furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130102 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |