CN207093315U - A kind of piston of oil-free air compressor - Google Patents
A kind of piston of oil-free air compressor Download PDFInfo
- Publication number
- CN207093315U CN207093315U CN201720890617.4U CN201720890617U CN207093315U CN 207093315 U CN207093315 U CN 207093315U CN 201720890617 U CN201720890617 U CN 201720890617U CN 207093315 U CN207093315 U CN 207093315U
- Authority
- CN
- China
- Prior art keywords
- piston
- sealing strip
- connection strap
- air compressor
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compressor (AREA)
Abstract
The utility model discloses a kind of piston of oil-free air compressor, including piston seat, piston seat one end is provided with air valve plate, and piston seat the week side of boss is arranged with sealing ring, the week side of boss coaxial line of the piston seat close to air valve plate one end offers annular groove, and the week side of boss outer rim of the piston seat close to air valve plate one end is in inclined-plane；Be provided with annular groove can head and the tail grafting sealing strip, sealing strip side wall offers space groove along its length.Annular groove is caught in after sealing strip head and the tail grafting, and keep being bonded with cylinder minute surface, as the piston moves, Partial shrinkage gas permeation inclined-plane enters in the space groove of sealing strip and crush seal bar, sealing strip is by a downward pressure and outside expansionary force so that sealing strip, which is pushed against and extended out with annular groove sidewall, abuts to cylinder minute surface, plus the toughness of sealing strip itself, entirety air-tightness is improved during piston movement, and the speed of air compressor compressed gas is faster also more stable.
Description
Technical field
Air compressor part field is the utility model is related to, more specifically, it relates to which a kind of oil-free air compresses
The piston of machine.
Background technology
Air compressor is a kind of equipment to compressed gas.Air compressor is similar with water pump structure.Most of skies
Air compressor is reciprocating-piston motion, is moved back and forth by piston in cylinder and plays a part of compressed gas.Patent
Notification number is CN201412300 Chinese patent, it is proposed that a kind of full-oil-free lubrication piston reciprocating air compressor, including gas
Cylinder, piston, connecting rod, piston the week side of boss offer piston ring groove, are piston skirt below piston ring groove, it is recessed that piston skirt is provided with positioning
Groove, is coated with support ring outside piston skirt, and the inwall of support ring, which is provided with, corresponding with the detent of piston skirt to be determined
Position boss, positioning boss are clamped in detent.
In cylinder motion, piston seat side wall can fully contact piston seat with the minute surface of cylinder, gas in above-mentioned patent
Pressure can become big during compression, and gas is easily revealed at the gap of piston and cylinder, when area is excessive at sealing, shadow
The reciprocating motion of piston is rung, when area is too small at sealing, poor air-tightness during piston movement.
Utility model content
During for piston movement the problem of poor air-tightness, when the utility model purpose is to propose a kind of raising piston movement
The piston of the oil-free air compressor of cylinder entirety air-tightness, concrete scheme are as follows：
A kind of piston of oil-free air compressor, including piston seat, described piston seat one end are provided with air valve plate, the work
Obturating plug the week side of boss is arranged with sealing ring, and the week side of boss coaxial line of the piston seat close to described air valve plate one end offers annular groove, institute
It is in inclined-plane to state the week side of boss outer rim of the piston seat close to described air valve plate one end；
Be provided with the annular groove can head and the tail grafting sealing strip, the sealing strip side wall offers along its length
Space groove.
Pass through above-mentioned technical proposal, it is stuck in the annular groove of piston seat after sealing strip head and the tail grafting, and is protected with cylinder minute surface
Fitting is held, as the piston moves, Partial shrinkage gas permeation inclined-plane enters in the space groove of sealing strip and crush seal bar, sealing
Bar is by a downward pressure and outside expansionary force so that sealing strip, which is pushed against and extended out with annular groove sidewall, abuts to cylinder
Minute surface, due to the toughness of sealing strip itself, sealing strip can also extend out in cylinder, improve air-tightness during piston movement, because
This, the speed of air compressor compressed gas is faster also more stable.
Further, the sealing ring material is polytetrafluoroethylene (PTFE).
Pass through above-mentioned technical proposal, polytetrafluoroethylene (PTFE) have good chemical resistance and heat resistance, and service life is grown,
Reduce abrasion caused by piston directly contacts with cylinder.
Further, described sealing strip one end is provided with connection strap, the sealing strip away from the upper connection strap one
End is provided with lower connection strap, and the upper connection strap mutually abuts cooperation with the side wall of the lower connection strap.
Pass through above-mentioned technical proposal, the upper connection strap of sealing strip head and the tail and lower connection strap overlap to form one up and down
Ring-type, it is easily installed in the annular groove of piston seat.
Further, the upper connection strap is provided with card article close to the side of the lower connection strap, and the lower connection strap leans on
The side of the nearly upper connection strap offers the neck being adapted to the card article.
Pass through above-mentioned technical proposal, after piston is arranged in cylinder, sealing strip the week side of boss is limited, and passes through upper connection strap
The neck of card article and lower connection strap coordinate, both will not Relative sliding, it is more firm.
Further, the piston seat offers dovetail groove, the dovetail groove close to the side coaxial line of the air valve plate
Bottom land offers screw, and the air valve stop screw for fixing the air valve plate position is provided with the screw.
Air valve plate is pressed in dovetail groove by Pass through above-mentioned technical proposal, air valve stop screw after passing through air valve plate so that
Air valve plate will not rock.
Further, it is characterised in that the dovetail groove bottom land is provided with multiple sealing rings, and the dovetail groove bottom land opens up
There are multiple through holes.
Pass through above-mentioned technical proposal, multiple sealing rings are brought into close contact with air valve plate side, serve an effective sealing
Effect, and the sliding of air valve plate can be prevented.
Further, connecting hole is offered in the piston seat side wall.
Pass through above-mentioned technical proposal, connecting hole provide the fixed position of connecting rod.
Further, space groove side section is right angled triangle.
Pass through above-mentioned technical proposal, Partial shrinkage gas permeation inclined-plane enters in the space groove of sealing strip and crush seal
Bar, the cell wall of space groove can be under pressure, the space groove of right angled triangle cause sealing strip by a downward pressure and to
Outer expansionary force.
Compared with prior art, the beneficial effects of the utility model are as follows：
Because the toughness of itself can work as piston to extending out and keeping being bonded with cylinder minute surface after sealing strip head and the tail grafting installation
During motion, Partial shrinkage gas permeation inclined-plane enter sealing strip space groove in and crush seal bar, sealing strip by one to
Under pressure and outside expansionary force so that sealing strip and annular groove sidewall, which are pushed against and extended out, abuts to cylinder minute surface, improves
Air-tightness, due to being oil-free air compressor, protection cylinder minute surface and piston are played by being arranged sealing ring on the outside of piston seat
Effect, it is final cause air compressor compressed gas speed it is faster also more stable.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of the piston of oil-free air compressor；
Fig. 2 is a kind of exploded perspective view of the piston of oil-free air compressor；
Fig. 3 is A portions partial enlarged drawing in Fig. 2；
Fig. 4 is B portions partial enlarged drawing in Fig. 2.
Reference：1st, piston seat；2nd, air valve plate；3rd, sealing ring；4th, annular groove；5th, sealing strip；6th, inclined-plane；7th, upper connection
Bar；8th, lower connection strap；9th, card article；10th, neck；11st, dovetail groove；12nd, screw；13rd, air valve stop screw；14th, sealing ring；15、
Through hole；16th, connecting hole；17th, space groove.
Embodiment
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, with reference to embodiment and attached
The utility model is described in further detail for figure, but embodiment of the present utility model is not limited only to this.
A kind of piston of oil-free air compressor, as depicted in figs. 1 and 2, including piston seat 1, piston seat 1 are in one end open
The cylinder of structure, connecting hole 16 is offered in the side wall of piston seat 1.Connecting hole 16 provides the fixed position of connecting rod.Piston seat 1
The week side of boss is arranged with sealing ring 3, and the material of sealing ring 3 is polytetrafluoroethylene (PTFE).Polytetrafluoroethylene (PTFE) have good chemical resistance and
Heat resistance, service life length, abrasion caused by piston directly contacts with cylinder can be reduced.
As shown in Figures 2 and 3, piston is fixed with air valve plate 2 in one end away from opening, and piston seat 1 is close to air valve plate 2
Side coaxial line offer dovetail groove 11, the cell wall of dovetail groove 11 sets in predetermined angle with bottom land and forms inclined plane, trapezoidal
The bottom land of groove 11 offers screw 12 with the coaxial line of piston seat 1, and the internal thread of screw 12 is fixedly connected with air valve stop screw 13,
Air valve stop screw 13 is fixedly connected through air valve plate 2 with piston seat 1.Air valve stop screw 13 can be by gas after passing through air valve plate 2
Valve block 2 is pressed in dovetail groove 11, so that air valve plate 2 will not rock after inclined cell wall abuts with the week side of boss of air valve plate 2.Dovetail groove
11 bottom land coaxial lines are fixed with the sealing ring 14 that multiple diameters differ, and the bottom of dovetail groove 11 offers multiple through holes 15.Multiple sealings
Ring 14 is brought into close contact with the side of air valve plate 2, plays significantly more efficient sealing function, while can prevent the sliding of air valve plate 2.
As shown in figure 3, the week side of boss coaxial line of the piston seat 1 close to the one end of air valve plate 2 offers annular groove 4, piston seat 1 is close
All lateral edges of the side of air valve plate 2 are in inclined-plane 6, and the annular of inclined-plane 6 is arranged on the one end of piston seat 1.Inclined-plane 6 can be compressed with leader
Gas enters in annular groove 4.
As shown in Figure 2 and Figure 4, be provided with annular groove 4 can head and the tail grafting sealing strip 5, the one end of sealing strip 5 is along its length
Direction, which stretches out, is fixed with connection strap 7, and the one end of sealing strip 5 away from upper connection strap 7 stretches out solid along its length
Surely there is lower connection strap 8, upper connection strap 7 and lower connection strap 8 are staggered, and upper connection strap 7 mutually abuts with the side wall of lower connection strap 8
A ring-type is cooperatively formed, strip is easily installed in the annular groove 4 of piston seat 1.Upper connection strap 7 close to lower connection strap 8 one
Side is fixed with card article 9 along its length, and lower connection strap 8 offers the neck being adapted to card article 9 close to the side of upper connection strap 7
10.Coordinated by the neck 10 of the card article 9 and lower connection strap 8 of upper connection strap 7, both upper connection strap 7 and lower connection strap 8 will not phases
It is more firm to sliding.The side wall of sealing strip 5 offers space groove 17 along its length, and the side section of space groove 17 is right angle three
Angular, space groove 17 is towards inclined-plane 6.Partial shrinkage gas permeation inclined-plane 6 enters in the space groove 17 of sealing strip 5 and crush seal
Bar 5, the cell wall of space groove 17 can be under pressure, and the space groove 17 of right angled triangle causes sealing strip 5 by a downward pressure
Power and outside expansionary force, finally cause sealing strip 5 is pushed against and extended out with the side wall of annular groove 4 to abut to cylinder minute surface, air-tightness
More preferably.
Working principle and beneficial effect of the present utility model is as follows：
Operating personnel's sealing ring 3 on the outer sheath of piston seat 1, after head and the tail grafting sealing strip 5 and it is stuck in piston seat 1
In annular groove 4, it is fixed in by air valve stop screw 13 through air valve plate 2 in the dovetail groove 11 of piston seat 1, connecting rod and work
After obturating plug 1 connects, then piston seat 1 loaded into cylinder.
Because the toughness of itself can work as work to extending out and keeping being bonded with cylinder minute surface after the head and the tail grafting of sealing strip 5 installation
Plug motion when, Partial shrinkage gas permeation inclined-plane 6 enter sealing strip 5 space groove 17 in and crush seal bar 5, sealing strip 5 by
To a downward pressure and outside expansionary force so that sealing strip 5, which is pushed against and extended out with the side wall of annular groove 4, abuts to cylinder mirror
Face, air-tightness is improved, due to being oil-free air compressor, protection cylinder is played by being arranged sealing ring 3 in the outside of piston seat 1
The effect of minute surface and piston, the final speed for causing air compressor compressed gas are faster also more stablized.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (8)
1. a kind of piston of oil-free air compressor, it is characterised in that including piston seat (1), described piston seat (1) one end is set
There is air valve plate (2), piston seat (1) the week side of boss is arranged with sealing ring (3), and the piston seat (1) is close to the air valve plate (2) one
The week side of boss coaxial line at end offers annular groove (4), and the week side of boss outer rim of the piston seat (1) close to the air valve plate (2) one end is in
Inclined-plane (6)；
Be provided with the annular groove (4) can head and the tail grafting sealing strip (5), sealing strip (5) side wall is along its length
Offer space groove (17).
2. the piston of oil-free air compressor according to claim 1, it is characterised in that sealing ring (3) material is
Polytetrafluoroethylene (PTFE).
3. the piston of oil-free air compressor according to claim 2, it is characterised in that described sealing strip (5) one end is set
Connection strap (7) is equipped with, the one end of the sealing strip (5) away from the upper connection strap (7) is provided with lower connection strap (8), described
Upper connection strap (7) mutually abuts cooperation with the side wall of the lower connection strap (8).
4. the piston of oil-free air compressor according to claim 3, it is characterised in that the upper connection strap (7) is close
The side of the lower connection strap (8) is provided with card article (9), and the lower connection strap (8) is opened close to the side of the upper connection strap (7)
Provided with the neck (10) being adapted to the card article (9).
5. the piston of oil-free air compressor according to claim 2, it is characterised in that the piston seat (1) is close to institute
The side coaxial line for stating air valve plate (2) offers dovetail groove (11), and dovetail groove (11) bottom land offers screw (12), described
The air valve stop screw (13) for fixing the air valve plate (2) position is provided with screw (12).
6. the piston of oil-free air compressor according to claim 5, it is characterised in that dovetail groove (11) bottom land is set
Multiple sealing rings (14) are equipped with, dovetail groove (11) bottom land offers multiple through holes (15).
7. the piston of oil-free air compressor according to claim 2, it is characterised in that in piston seat (1) side wall
Offer connecting hole (16).
8. the piston of oil-free air compressor according to claim 1, it is characterised in that space groove (17) side section
For right angled triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890617.4U CN207093315U (en) | 2017-07-21 | 2017-07-21 | A kind of piston of oil-free air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890617.4U CN207093315U (en) | 2017-07-21 | 2017-07-21 | A kind of piston of oil-free air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093315U true CN207093315U (en) | 2018-03-13 |
Family
ID=61545981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720890617.4U Active CN207093315U (en) | 2017-07-21 | 2017-07-21 | A kind of piston of oil-free air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093315U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878358A (en) * | 2020-07-08 | 2020-11-03 | 河北华本机械有限公司 | Oil-free air compressor piston |
| CN112032016A (en) * | 2020-07-08 | 2020-12-04 | 河北华本机械有限公司 | Full-oilless air compressor for new energy vehicle |
-
2017
- 2017-07-21 CN CN201720890617.4U patent/CN207093315U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878358A (en) * | 2020-07-08 | 2020-11-03 | 河北华本机械有限公司 | Oil-free air compressor piston |
| CN112032016A (en) * | 2020-07-08 | 2020-12-04 | 河北华本机械有限公司 | Full-oilless air compressor for new energy vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207093315U (en) | A kind of piston of oil-free air compressor | |
| CN208169667U (en) | A kind of natural gas valve of anti-leak | |
| CN204729260U (en) | A kind of air compression plant be installed on air compressor | |
| CN215213407U (en) | Eccentric polished rod sealing device | |
| CN203297727U (en) | Stop valve | |
| CN206988466U (en) | A kind of self sealss floating ball valve | |
| CN213064838U (en) | Novel straight-through full-covered ball valve | |
| CN205225147U (en) | Well head cable sealing device | |
| CN210240570U (en) | Throttle stop valve | |
| CN201145049Y (en) | Needle valve sealing structure | |
| CN212616318U (en) | Wear-resistant and long-service-life corrugated pipe stop valve | |
| CN2547866Y (en) | Long-life energy-saving pumping-well head polish rod sealing apparatus | |
| CN202991263U (en) | Cylinder head cover seat ring groove | |
| CN202790593U (en) | High temperature balanced type stop valve | |
| CN206636782U (en) | Compressor and its main shaft | |
| CN205780024U (en) | A kind of network pulls out the pneumatic cylinder of line machine automatically | |
| CN205908766U (en) | Non -maintaining high pressure resistant triple offset butterfly valve | |
| CN203717950U (en) | Low-temperature high-pressure stop valve | |
| CN201165859Y (en) | Energy-saving self-sealing packing box of oil pumping machine well head | |
| CN209990977U (en) | Plunger valve | |
| CN216812071U (en) | Pull rod structure for air cylinder to compress air | |
| CN211113766U (en) | Sealed well cover of inspection well | |
| CN210290728U (en) | Piston ring and cylinder thereof | |
| CN218267279U (en) | Automatic regulating structure for butterfly valve shaft seal | |
| CN220435558U (en) | High-pressure valve packing gland |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201100 No. 100, Lane 2868, Sanlu Road, Pujiang Town, Minhang District, Shanghai Patentee after: Shanghai Yusheng Compression Machinery Co.,Ltd. Address before: 201100 No. 100, Lane 2868, Sanlu Road, Pujiang Town, Minhang District, Shanghai Patentee before: SHANGHAI YUSHENG COMPRESSION MACHINERY CO.,LTD. |