CN205714664U - A kind of full-oil-free lubrication sealing type piston structure - Google Patents
A kind of full-oil-free lubrication sealing type piston structure Download PDFInfo
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- CN205714664U CN205714664U CN201620686021.8U CN201620686021U CN205714664U CN 205714664 U CN205714664 U CN 205714664U CN 201620686021 U CN201620686021 U CN 201620686021U CN 205714664 U CN205714664 U CN 205714664U
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- piston
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- annular groove
- piston body
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of full-oil-free lubrication sealing type piston structure, including piston ring, piston body, the centre of described piston body stacks in offering the annular groove in the middle of the annular groove of several ring installations, each piston body and is provided with two piston rings.Annular groove inner bottom part in the middle of each piston body is provided with nonmetal elastic spring, and nonmetal elastic spring gear stacks place at the otch of two piston rings.This utility model has the advantage that the sealing improving piston component compared to existing technology, improve reciprocating-piston compressor efficiency, extend piston component service life, effectively overcome the metal elastic force spring Fast Wearing to piston body, full-oil-free lubrication designs, can be applicable to high, medium and low air cylinder, can be used for minor diameter cylinder and can also be used for major diameter cylinder, can be used for oil-free lubrication cylinder and can also be used for oil lubrication cylinder.Simple in construction, part are few, low cost of manufacture, easy for installation, life-span length, reliability height.
Description
Technical field
This utility model relates to compressor field field, the piston structure of a kind of compressor.
Background technology
In reciprocating-piston compressor, piston ring is essential, whether becket or nonmetallic ring, owing to its structure has
There is the feature of opening, there is leakage.The piston ring made for the PTFE of full-oil-free lubrication, also because of the deficiency of its own resilient
And stretch compensation device must be installed additional to reduce leakage.
Present reciprocating-piston compressor, whether has thin oil lubricant, and most oil-free in cylinder, sealpiston-ring is most
Using filled polytetrafluoroethylene, its structure mostly uses metal steel disc and piston ring is carried out stretch compensation.
Steel leaf-spring can only carry out stretch compensation, it is impossible to improves the sealability of piston ring.
The hardness of steel leaf-spring differs too big with the hardness of piston material, does not has again any lubricant method, so, piston ring groove
Abrasion very fast, have impact on the normal work of piston component, shorten the compressor operating life-span.
The corrective measure that full-oil-free lubrication sealing type piston structure is aiming at the problems referred to above and takes.Full-oil-free lubrication is close
Envelope type piston structure is simple, easy to maintenance, reliable, can be effectively improved compressor operating efficiency, extends compressor service and protects
Support time interval, reduce maintenance workload.
Utility model content
Technical problem to be solved in the utility model there are provided a kind of good airproof performance, simple in construction, reliable,
Full-oil-free lubrication sealing type piston structure easy to maintenance, is used for having oil or oil-free reciprocating-piston compressor, improves compressor fortune
Line efficiency, overcomes metal elastic force spring that piston body is gnawed mill.
This utility model is to solve above-mentioned technical problem by the following technical programs: a kind of full-oil-free lubrication sealing type is lived
Plug structure, including piston ring, piston body, the centre of described piston body offers the annular groove of several ring installations, each work
Stack in annular groove in the middle of cock body and two piston rings are installed.
Optimizing, the annular groove inner bottom part in the middle of each piston body is provided with nonmetal elastic spring, and nonmetal elastic spring gear exists
The otch of two piston rings stacks place.
Optimizing, described full-oil-free lubrication sealing type piston structure also includes two support rings, and described piston body two ends are each
Offering the annular groove of an installation support ring, support ring is arranged in the annular groove at described piston body two ends.
This utility model has the advantage that by arranging support ring compared to existing technology, piston ring and nonmetal elastic force
Spring structure, improves the sealing of piston component, improves reciprocating-piston compressor efficiency, extends piston component service life, effectively
Overcoming the metal elastic force spring Fast Wearing to piston body, full-oil-free lubrication designs, and can be applicable to high, medium and low air cylinder, available
Can also be used for major diameter cylinder in minor diameter cylinder, can be used for oil-free lubrication cylinder and can also be used for oil lubrication cylinder.Structure letter
List, part are few, low cost of manufacture, easy for installation, life-span length, reliability height.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model full-oil-free lubrication sealing type piston structure.
Detailed description of the invention
Elaborating embodiment of the present utility model below, the present embodiment is being front with technical solutions of the utility model
Put and implement, give detailed embodiment and concrete operating process, but protection domain of the present utility model does not limits
In following embodiment.
As it is shown in figure 1, the present embodiment full-oil-free lubrication sealing type piston structure includes two support rings 1, piston ring 2, non-
Metal elastic force spring 3, piston body 4.
The annular groove of an installation support ring 1 is respectively offered at described piston body 4 two ends, and support ring 1 is arranged on described piston body 4 two ends
Annular groove in.
The centre of piston body 4 is folded in offering the annular groove in the middle of the annular groove of several ring installations 2, each piston body 4
Put and two piston rings 2 are installed.Annular groove inner bottom part in the middle of each piston body 4 is provided with nonmetal elastic spring 3, nonmetal elastic force
The otch that spring 3 keeps off at two piston rings 2 stacks place.Piston ring 2 and nonmetal elastic spring 3 collectively constitute sealing unit, depending on cylinder
Operating pressure selects the number of sealing unit.
Said two support ring 1 has throttling action concurrently, reduces and seals load, extends the service life of sealing unit.
Operation principle of the present utility model is:
The piston ring 2 of nonmetallic materials is not enough due to the elastic force of self, pastes between periphery and the cylinder inner wall of piston ring 2
Tight not enough, gas compressed produces leakage, and from the point of view of for nonmetal piston ring, elastic spring is indispensable.
This utility model uses nonmetallic materials elastic spring 3, along with the motion of piston, the change of stress, also will not scraping
The annular groove internal groove side wall of piston body 4, will not hinder the operation of compressor.
This utility model full-oil-free lubrication sealing type piston structure, can be attributed to three ring combinative structurees.Two piston rings 2
Otch is stacked together, and when two otch stagger, gas just can not directly leak, then it is nonmetal to set one in the inner side of two-piston ring 2
Material forces spring 3, as grommet, blocks the path that gas is radially leaked by otch, therefore improves sealing.
This utility model, full-oil-free lubrication sealing type piston structure, three ring combinative structurees can be attributed to.This structure can carry
The principle of high leakproofness is: the otch of two piston rings is stacked together, and when two otch stagger, gas just can not directly leak,
Inner side at two rings sets a grommet again, blocks the path that gas is radially leaked by otch, therefore improves sealing.Actual
The way it goes for service condition.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (3)
1. a full-oil-free lubrication sealing type piston structure, including piston ring, piston body, it is characterised in that described piston body
Centre stacks in offering the annular groove in the middle of the annular groove of several ring installations, each piston body and is provided with two piston rings.
A kind of full-oil-free lubrication sealing type piston structure the most according to claim 1, it is characterised in that: in each piston body
Between annular groove inner bottom part nonmetal elastic spring is installed, nonmetal elastic spring gear stacks place at the otch of two piston rings.
A kind of full-oil-free lubrication sealing type piston structure the most according to claim 1, it is characterised in that: also include two
Carrier ring, described piston body two ends respectively offer the annular groove of an installation support ring, and support ring is arranged on the annular groove at described piston body two ends
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620686021.8U CN205714664U (en) | 2016-07-01 | 2016-07-01 | A kind of full-oil-free lubrication sealing type piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620686021.8U CN205714664U (en) | 2016-07-01 | 2016-07-01 | A kind of full-oil-free lubrication sealing type piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714664U true CN205714664U (en) | 2016-11-23 |
Family
ID=57327370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620686021.8U Active CN205714664U (en) | 2016-07-01 | 2016-07-01 | A kind of full-oil-free lubrication sealing type piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714664U (en) |
-
2016
- 2016-07-01 CN CN201620686021.8U patent/CN205714664U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |