CN204851591U - No oil piston that makes an uproar falls - Google Patents
No oil piston that makes an uproar falls Download PDFInfo
- Publication number
- CN204851591U CN204851591U CN201520596578.8U CN201520596578U CN204851591U CN 204851591 U CN204851591 U CN 204851591U CN 201520596578 U CN201520596578 U CN 201520596578U CN 204851591 U CN204851591 U CN 204851591U
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- China
- Prior art keywords
- piston
- main body
- noise reduction
- oily
- positioning plate
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- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a no oil piston aims at providing one kind and has the no oil piston who falls the function of making an uproar, and its technical scheme main points are: include piston main part, piston cup, advance gas valve piece, pinhole, be equipped with the inlet port in the piston main part, advance to be equipped with on the gas valve piece and to dismantle stiff end, the free end of fixed connection in the piston main part, the free end covers in the inlet port surface.
Description
Technical field
The utility model relates to a kind of without oily piston, and more particularly, it relates to a kind of noise reduction without oily piston.
Background technique
Oil-free air compressor is the main body in compressed air source unit, and it is the device mechanical energy of prime mover being converted to gas pressure energy, is compressed-air actuated pressure generator.
And the main parts affecting oil-free air compressor compression efficiency are without oily piston portion, and mainly comprise piston main body without oily piston, leather cup, guide ring, for the pin-and-hole of slotting wrist pin, shape without oily piston is generally cylindrical, in order to promote the working life of air compressor, minority producer can make without oily piston the mode that air inlet is carried out in inside into, namely inlet hole is offered at the top of piston main body, this inlet hole is uniformly distributed along the axial direction without oily piston, then on inlet hole, upper air valve block is covered, the shape of this air-intake valve plate is disc, and this air-intake valve plate is threadedly connected to the end face central position without oily piston by lock screw, but the air-intake valve plate due to this disc passes through centralized positioning, and gas by inlet hole air-intake valve plate jack-up, the gas flow gone out in each inlet hole can not ensure identical, and after after a while, joint between air-intake valve plate and lock screw there will be gap unavoidably, air-intake valve plate is caused to occur wiggly situation in actual use, thus the operating noise increasing whole oilless air compressor can directly be caused, impact is normal to be used.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of noise reduction without oily piston.
For achieving the above object, the utility model provides following technological scheme: a kind of noise reduction is without oily piston, comprise piston main body, piston cup, air-intake valve plate, pin-and-hole, described piston main body is provided with inlet hole, described air-intake valve plate is provided with the fixed end, the free end that are detachably fixedly connected on piston main body, and described free end is covered in inlet hole surface.
Preferably, described piston cup is closed loop configuration, and described piston main body is provided with the positioning plate for clamping piston leather cup, and described positioning plate is detachably fixedly connected on piston main body.
Preferably, the shape of described positioning plate is ring, and described positioning plate is arranged in concentric with piston main body, and described fixed end is connected on positioning plate.
Preferably, described piston main body is provided with the air inlet platform coordinated with positioning plate inner ring near the end of positioning plate, described inlet hole is positioned on air inlet platform.
Preferably, described air-intake valve plate is also provided with linkage section, described linkage section is between fixed end and free end, and described linkage section is provided with noise reduction groove.
Preferably, the circumferential side wall of described piston main body is provided with guide ring.
Preferably, described guide ring is at least provided with 2, and described guide ring is symmetrically distributed in pin-and-hole both sides and axial direction along piston main body arranges.
Preferably, each guide ring is equipped with angular cut.
Preferably, described angular cut and without oily piston central axis between angle be 30 degree-50 and spend.
Compared with prior art, the beneficial effects of the utility model are: change traditional means of fixation, adopt the one-sided fixed end means of fixation of air-intake valve plate, after going out in inlet hole, free end is owing to being subject to the percussion of gas, and be separated with inlet hole, when going out without gas in inlet hole, free end limit can be covered in inlet hole surface again, even if the air inflow in each inlet hole is different, due to employing is the mode that fixed end is fixed, whole air-intake valve plate also there will not be wiggly situation, through using for a long time, this situation also there will not be.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of a kind of noise reduction of the utility model without oily piston embodiment;
Fig. 2 is the plan structure schematic diagram of a kind of noise reduction of the utility model without oily piston embodiment;
The structural representation of Fig. 3 when to be a kind of noise reduction of the utility model be not installed into air valve plate without oily piston embodiment;
The plan structure schematic diagram of Fig. 4 when to be a kind of noise reduction of the utility model be not installed into air valve plate without oily piston embodiment;
Fig. 5 is the side-looking structural representation of a kind of noise reduction of the utility model without oily piston embodiment;
Fig. 6 is the structural representation of a kind of noise reduction of the utility model without guide ring in oily piston embodiment;
Fig. 7 is the detonation configuration schematic diagram of a kind of noise reduction of the utility model without oily piston embodiment.
Reference character: 1, piston main body; 2, piston cup; 3, air-intake valve plate; 31, fixed end; 32, linkage section; 33, free end; 4, inlet hole; 5, positioning plate; 6, air inlet platform; 7, noise reduction groove; 8, guide ring; 9, angular cut; 10, the first screw; 11, the second screw; 12, pin-and-hole.
Embodiment
For making the object of the utility model embodiment, technological scheme and advantage clearly, below with reference to Fig. 1 to Fig. 7 a kind of noise reduction of the utility model being done without oily piston embodiment and describing clearly and completely further.Obviously, described embodiment is section Example of the present utility model, instead of whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, belongs to the scope of the utility model protection.
Noise reduction comprises piston main body 1 without the structure of oily piston, piston cup 2, air-intake valve plate 3, for the pin-and-hole 12 of slotting wrist pin, this pin-and-hole 12 is positioned on the excircle sidewall of piston main body 1, piston main body 1 is provided with inlet hole 4, air-intake valve plate 3 is provided with the fixed end 31 being detachably fixedly connected on piston main body 1, free end 33, free end 33 is covered in inlet hole 4 surface, this fixed end 31 adopts the first screw 10 to be connected with piston main body 1 usually, change traditional means of fixation, adopt one-sided fixed end 31 means of fixation of air-intake valve plate 3, after going out in inlet hole 4, free end 33 is owing to being subject to the percussion of gas, and be separated with inlet hole 4, when going out without gas in inlet hole 4, free end 33 limit can be covered in inlet hole 4 surface again, even if the air inflow in each inlet hole 4 is different, due to employing is the mode that fixed end 31 is fixed, whole air-intake valve plate 3 also there will not be wiggly situation, through using for a long time, this situation also there will not be.
Piston main body 1 is provided with the positioning plate 5 for clamping piston leather cup 2, positioning plate 5 is detachably fixedly connected on piston main body 1, piston cup 2 have employed the structure of closed loop, during the cooperatively interacting without oily piston and piston cylinder of this structure, can play better seal action relative to the piston cup 2 of hatch frame, its compression efficiency can be promoted further; Positioning plate 5 is connected on piston main body 1 by being detachably fixedly connected with mode, usually be connected by some second screws 11 between positioning plate 5 with piston main body 1, and some second screws 11 are with the medial axis of piston main body 1 circumferentially array distribution, when needs cleaning piston leather cup 2 or with when changing leather cup, only need disassemble positioning plate 5, very convenient, and also can save the more time when installing piston cup 2.
The shape of positioning plate 5 is ring, positioning plate 5 is arranged in concentric with piston main body 1, fixed end 31 is connected on positioning plate 5, piston main body 1 is provided with the air inlet platform 6 coordinated with positioning plate 5 inner ring near the end of positioning plate 5, inlet hole 4 is positioned on air inlet platform 6, transition fit is adopted between this air inlet platform 6 and positioning plate 5 inner ring, first, in use, piston main body 1 meeting constantly slippage up and down, in order to positioning plate 5 can be made to play better positioning action, avoid the radial-play of the positioning plate 5 caused because of the slippage of piston main body 1; Secondly, in installation process, operator only need cooperatively interact the groove on positioning plate 5 and air inlet platform 6, can realize accurate location, convenient installation.
Air-intake valve plate 3 is also provided with linkage section 32, linkage section 32 is between fixed end 31 and free end 33, linkage section 32 is provided with noise reduction groove 7, in actual use, the free end 33 of air-intake valve plate 3 can continually stir up and down, and the outer side wall of linkage section 32 can occur constantly to knock effect with the outer side wall of piston main body 1, noise reduction groove 7 significantly can reduce and knocks area between connecting end and piston main body 1 outer side wall, reaches the effect reducing noise.
The circumferential side wall of piston main body 1 is provided with guide ring 8, and guide ring 8 at utmost can ensure the linarity that piston main body 1 moves along piston cylinder, plays the better object guiding piston main body 1 axial motion.
Because pin-and-hole 12 is positioned at the medium position of piston main body 1, and the link position of connecting rod and piston main body 1 is positioned at bearing pin position too, and now at least 2 guide rings 8 are symmetrically distributed in pin-and-hole 12 both sides and along in the axial direction arrangement of piston main body 1, effectively can ensure the linarity of whole piston main body 1 when moving along piston cylinder.
Each guide ring 8 is equipped with angular cut 9, direction due to piston movement is axial motion, be subject to the frictional force effect of piston cylinder casing wall, guide ring 8 can by the frictional force effect along piston axial direction, and make the adjacent sidewall of angular cut 9 that direct conflict can occur, now the oral area of angular cut 9 can close substantially, thus the sealing of this piston can be increased, promote the compression efficiency of air compressing, as shown in Figure 5, angular cut 9 and without oily piston central axis between angle be a, wherein a is 30 degree of-50 degree, learn through long time test, the angular cut 9 of this angle, the requirement of installing convenience and piston seal performance can be taken into account.
The above is only exemplary embodiment of the present utility model, but not for limiting protection domain of the present utility model, protection domain of the present utility model is determined by appended claim.
Claims (9)
1. a noise reduction is without oily piston, comprise piston main body, piston cup, air-intake valve plate, pin-and-hole, described piston main body is provided with inlet hole, it is characterized in that: described air-intake valve plate is provided with the fixed end, the free end that are detachably fixedly connected on piston main body, and described free end is covered in inlet hole surface.
2. a kind of noise reduction according to claim 1 is without oily piston, it is characterized in that: described piston cup is closed loop configuration, and described piston main body is provided with the positioning plate for clamping piston leather cup, and described positioning plate is detachably fixedly connected on piston main body.
3. a kind of noise reduction according to claim 2 is without oily piston, it is characterized in that: the shape of described positioning plate is ring, and described positioning plate is arranged in concentric with piston main body, and described fixed end is connected on positioning plate.
4. a kind of noise reduction according to claim 3 is without oily piston, it is characterized in that: described piston main body is provided with the air inlet platform coordinated with positioning plate inner ring near the end of positioning plate, described inlet hole is positioned on air inlet platform.
5. a kind of noise reduction according to claim 1 is without oily piston, it is characterized in that: described air-intake valve plate is also provided with linkage section, and described linkage section is between fixed end and free end, and described linkage section is provided with noise reduction groove.
6. a kind of noise reduction according to claim 1 is without oily piston, it is characterized in that: the circumferential side wall of described piston main body is provided with guide ring.
7. a kind of noise reduction according to claim 6 is without oily piston, it is characterized in that: described guide ring is at least provided with 2, and described guide ring is symmetrically distributed in pin-and-hole both sides and axial direction along piston main body arranges.
8. a kind of noise reduction according to claim 7 is without oily piston, it is characterized in that: each guide ring is equipped with angular cut.
9. a kind of noise reduction according to claim 8 is without oily piston, it is characterized in that: described angular cut and without oily piston central axis between angle be 30 degree-50 and spend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520596578.8U CN204851591U (en) | 2015-08-10 | 2015-08-10 | No oil piston that makes an uproar falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520596578.8U CN204851591U (en) | 2015-08-10 | 2015-08-10 | No oil piston that makes an uproar falls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851591U true CN204851591U (en) | 2015-12-09 |
Family
ID=54742145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520596578.8U Expired - Fee Related CN204851591U (en) | 2015-08-10 | 2015-08-10 | No oil piston that makes an uproar falls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI784492B (en) * | 2021-04-21 | 2022-11-21 | 周文三 | Piston of cylinder of air compressor |
-
2015
- 2015-08-10 CN CN201520596578.8U patent/CN204851591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI784492B (en) * | 2021-04-21 | 2022-11-21 | 周文三 | Piston of cylinder of air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160810 |