CN201062573Y - Cylinder cap device of brake air compressor - Google Patents
Cylinder cap device of brake air compressor Download PDFInfo
- Publication number
- CN201062573Y CN201062573Y CNU2007201478478U CN200720147847U CN201062573Y CN 201062573 Y CN201062573 Y CN 201062573Y CN U2007201478478 U CNU2007201478478 U CN U2007201478478U CN 200720147847 U CN200720147847 U CN 200720147847U CN 201062573 Y CN201062573 Y CN 201062573Y
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- air
- air inlet
- cylinder cap
- valve plate
- valve
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Abstract
The utility model discloses a braking air compressor cylinder cover, in particular to an air compressor cylinder cover used for the air braking systems of motor vehicles, tractors and other vehicles. The utility model comprises an air inlet part and an air exhaust part, wherein, the air discharge part adopts a plate shaped valve plate structure, and a wave shaped elastic washer (6) and an air exhaust valve seat (8), an air exhaust valve spring (7), an air exhaust plate shaped valve plate (9) and an air exhaust valve (10) are installed at the lower part of an air outlet (4) in sequence; the air inlet part adopts a tongue spring valve plate structure, an air inlet through hole (17) is arranged at the lower part of an air inlet cavity (18), an air inlet tongue spring valve plate (14) is fixedly arranged on the lower surface of a valve body and the movable end of the air inlet tongue spring valve plate (14) is stuck with the end face of the air inlet through hole (17) (namely the bottom face of the cylinder cover), and a water channel (19) used for cooling water is arranged on the periphery of the air discharge part structure of the cylinder cover. The design has the advantages that the structure is simple, the air tightness is strong, the aeration coefficient is high, the cooling effect is good, and the service life is long.
Description
Technical field
The utility model relates to a kind of braking air compressor cylinder cap device, especially is applied to the air compressor cylinder cap device of vehicle pneumatic brake braking system such as automobile, tractor.
Background technique
The braking air compressor is the source of the gas of automobile, tractor pneumatic brake braking system.State's inside brake air compressor has about 300 kinds of products, millions of of Annual output at present.Use wider a kind of braking air compressor cylinder cap on the market, its inlet and exhaust system all adopts tabular valve structure.The braking air compressor cylinder cap structural type that uses on Jiefang brand automobile and east wind 140 automobiles belongs to promptly that this is a kind of, the inlet and exhaust system of its cylinder cap structure all adopts tabular valve block, the advantage that adopts tabular valve block is a good seal performance, but adopt the cylinder cap part of this structure many, the inlet and exhaust system volume is big, the air compressor of only suitable rotating speed about 1500 rev/mins; When if the air compressor rotating speed reaches 2000-3000 rev/min, it is very low that the volumetric efficiency of air compressor can become, and approximately has only thirties percent.Cause the low reason of tabular valve block volumetric efficiency to be: tabular air-intake valve plate is the sealing valve against latch bracket, negative pressure and atm difference that descent of piston in the cylinder sleeve produces, act on the air-intake valve plate, air-intake valve plate recompression spring is opened the valve air inlet, barometric pressure official post valve block is passed to spring again to power, opening valve will have individual Delay Process, thus rotating speed fast may cause intake valve air inlet sufficiently, cause its volumetric efficiency to reduce; And the usefulness of the tabular valve block of exhaust is not influenced by high rotating speed, so long as enter gas in the cylinder sleeve from suction port, exhaust valve plate can both be discharged to it in the gas holder; Another deficiency of two tabular valve structures is to be difficult to realize the cylinder cap water-cooled.
Another kind of more common braking air compressor on the market, its cylinder cap inlet and exhaust system all adopts the reed valve plate structure, and the cylinder cap apparatus structure pattern of Dao Yici air compressor and comings air compressor belongs to promptly that this is a kind of.This pair of reed valve plate structure at present in the existing development widely of China, and is applied on the homemade motor.The inlet and exhaust system of comparing all adopts the air compressor of tabular valve structure, reed valve plate is more suitable for rev-happy engine, because of there is not the problem of tabular valve block spring period of intake hysteresis in it, itself has elasticity again the air inlet reed valve plate, therefore its volumetric efficiency is higher, can reach more than 50 percent; But with respect to tabular valve block, the air-tightness of two reed valve plate air compressors is relatively poor.
The air compressor cylinder cap of two reed valve plate structures greatly can water-cooled, but its cooling water is just at the top of cylinder cap, and because of can not well pressing close to thermal source, so cooling effect is undesirable.Simultaneously this pair of reed valve plate structure also must have a seat board, and the inlet and outlet valve block is attached to above the seat board, therefore all requires very high to the planeness of seat board, roughness, parallelism etc.; Inlet and outlet hole on the seat board has a plurality ofly again, so the processing technology complexity, manufacture difficulty is big, the cost height.
The model utility content:
The technical problems to be solved in the utility model is, provide a kind of simple in structure, tightness good, volumetric efficiency is high, the braking air compressor cylinder cap device of long service life.
For solving the problems of the technologies described above, the designer, designs air inlet and adopts reed valve plate, exhaust to adopt the braking air compressor cylinder cap device of tabular valve structure on the basis of two tabular valves and two Reed Valve cylinder cap structures through research and test of many times modification for a long time.
It comprises induction part and discharge portion, described discharge portion is tabular valve structure, promptly below described relief opening 4, wave mode elastic washer 6 is installed with delivery valve seat 8, exhaust valve spring 7, the tabular valve block 9 of exhaust, outlet valve 10 orders, described induction part is the reed valve plate structure, described cylinder cap body is provided with the air-inlet cavity 18 that is communicated with suction port 2 and the below of described air-inlet cavity 18 has air inlet through hole 17, and the lower surface of valve body (being the following of cylinder cap) is installed with the movable end of an air inlet reed valve plate 14 and air inlet reed valve plate 14 and the end face of air inlet through hole 17 is fitted.
As improvement of the present utility model, have water intake 3 and water outlet 1 on the cylinder cap 5, be arranged as the water channel 19 that is used for water-cooled around the discharge portion structure of described cylinder cap body, described water channel 19 is communicated with respectively with water intake 3 and water outlet 1.
Delivery temperature just is the very important performance index of air compressor.Air compressor the time needs oil lubricating, delivery temperature height can cause on the cylinder cap inner chamber part in work to produce carbon deposit, thereby causes valve block poorly sealed, and the air compressor gas production descends, and then causes vehicle brake tolerance deficiency, and this moment, air compressor just needed the long-term load running.Otherwise air compressor long-term load running can cause the air compressor temperature further to raise again, and then carbon deposit can be on the increase finally can cause air compressor to be scrapped in advance.As seen the height of delivery temperature directly has influence on the working life of air compressor.
The utility model adopts the design of whole-water-cooling cylinder cap, promptly is designed to water channel around outlet valve, two reed valve plate structure air compressor cylinder caps of comparing, and circulating water is more pressed close to thermal source, and cooling-down effect is very obvious.Present domestic industry standard regulation delivery temperature can not be above 200 ℃, prove through designer's long-term experiment, the design is under the condition of 0.8MPa in 3000r/min, exhaust pressure, delivery temperature only is 130.9 ℃, well below national sector standard, compared with prior art, improved the working life of air compressor greatly.
The utility model adopts reed valve plate and tabular valve structure combining pattern.Air inlet adopts reed valve plate, the retardation phenomenon when having solved air inlet and be tabular valve block, and the volumetric efficiency of cylinder cap can reach 51.9%; Tabular valve block is adopted in exhaust, has improved the sealability of cylinder cap, with respect to two tabular valve block air compressor cylinder cap structures, has saved a seat board, has reduced cost again.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Figure 1 shows that the plan view of braking air compressor cylinder cap;
Figure 2 shows that the plan view of braking air compressor cylinder cap;
Figure 3 shows that braking air compressor cylinder cap and the B-B after cylinder body 15 cooperates to sectional view;
Figure 4 shows that the tabular valve block schematic representation of exhaust;
Figure 5 shows that air inlet reed valve plate schematic representation;
The A-A that Figure 6 shows that braking air compressor cylinder cap is to sectional drawing;
Figure 7 shows that the relative position relation schematic representation of braking air compressor cylinder cap air inlet reed valve plate and cylinder cap end face.
Embodiment
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 7, the design comprises induction part and discharge portion, described discharge portion is tabular valve structure, and below described relief opening 4, wave mode elastic washer 6 is installed with delivery valve seat 8, exhaust valve spring 7, the tabular valve block 9 of exhaust, outlet valve 10 orders; Described induction part is the reed valve plate structure, described cylinder cap body is provided with the air-inlet cavity 18 that is communicated with suction port 2 and the below of described air-inlet cavity 18 has air inlet through hole 17, the lower surface of valve body is installed with an end of an air inlet reed valve plate 14 and air inlet reed valve plate 14 and fixes by the attachment hole 16 and the lower surface of valve body, the end face of movable end and air inlet through hole 17 is fitted, the quantity of inlet hole 17 is not limited in 3, can cover into all vent holes 17 fully but all will satisfy installation back air inlet reed valve plate 14 for a plurality of as required; The shape of the tabular valve block 9 of exhaust as shown in Figure 4, air inlet reed valve plate 14 shapes are as shown in Figure 5.
As shown in Figure 6, have water intake 3 and water outlet 1 on the cylinder cap 5, be arranged as the water channel 19 that is used for water-cooled around the discharge portion structure of described cylinder cap body, described water channel 19 is communicated with respectively with water intake 3 and water outlet 1.
More than one of relief opening of the present utility model also comprises suction port 20, for guaranteeing the sealing of cylinder cap system, also has a cylinder cover cushion 12 between cylinder cap device and the cylinder body 15.
A sealing gasket 11 is arranged between outlet valve 10 and the cylinder cap 5, be used for the sealing of surface of contact.
The utility model working principle is as follows: when piston 13 down moved, the top of piston produced negative pressure.Along with piston 13 moves down, the top negative pressure increases, and cylinder cap suction port 2 is to be in atmospheric pressure state, at this moment piston head negative pressure and suction port place barometric pressure produce pressure reduction, this pressure reduction will overcome the resistance of air inlet reed valve plate 14, open air inlet reed valve plate 14, make air enter piston head, when lower dead center was arrived in piston motion, piston head reached the full admission amount.Begin up to move to piston after bottom dead center, along with moving on the piston, piston head pressure increases, and when reaching barometric pressure, relends the elastic force that helps air inlet reed valve plate 14, make air inlet reed valve plate 14 suction port that just has been attached on the intake valve port shutoff, piston continues up to move again, and the pressure of piston head just constantly increases, when pressure increases to the elastic force that can overcome exhaust cavity air pressure and exhaust valve spring 7, just open the tabular valve block 9 of exhaust, pressurized gas just can enter exhaust cavity by exhaust valve plate.When piston reached top dead center, the pressurized air that enters exhaust cavity also reached at most, has so far finished a work cycle.
Main innovate point of the present utility model is: adopt reed valve plate and tabular valve structure combining pattern, promptly induction part adopts the reed valve plate structure, and discharge portion adopts tabular valve structure; Adopt whole-water-cooling at the discharge portion structure periphery.Structural type of the present utility model includes but not limited to given structure among specification and the width of cloth figure, and all adopt reed valve plate to combine with tabular valve or adopt the structural type of whole-water-cooling all to drop in the middle of the protection domain of the present utility model simultaneously around the discharge portion structure.
Claims (2)
1. brake air compressor cylinder cap device for one kind, it comprises induction part and discharge portion, described discharge portion is tabular valve structure, in described relief opening (4) below, wave mode elastic washer (6) and delivery valve seat (8), exhaust valve spring (7), the tabular valve block of exhaust (9), outlet valve (10) order is installed, it is characterized in that: described induction part is the reed valve plate structure, described cylinder cap body is provided with the air-inlet cavity (18) that is communicated with suction port (2) and the below of described air-inlet cavity (18) has air inlet through hole (17), and the lower surface of valve body is installed with the movable end of an air inlet reed valve plate (14) and air inlet reed valve plate (14) and the end face of air inlet through hole (17) is fitted.
2. according to claim 1 described braking air compressor cylinder cap device, it is characterized in that: have water intake (3) and water outlet (1) on the described cylinder cap (5), be arranged as the water channel (19) that is used for water-cooled around the discharge portion structure of described cylinder cap body, described water channel (19) is communicated with respectively with water intake (3) and water outlet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201478478U CN201062573Y (en) | 2007-06-01 | 2007-06-01 | Cylinder cap device of brake air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201478478U CN201062573Y (en) | 2007-06-01 | 2007-06-01 | Cylinder cap device of brake air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062573Y true CN201062573Y (en) | 2008-05-21 |
Family
ID=39450948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201478478U Expired - Fee Related CN201062573Y (en) | 2007-06-01 | 2007-06-01 | Cylinder cap device of brake air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062573Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884320A (en) * | 2010-04-08 | 2013-01-16 | 贺尔碧格压缩机技术控股有限公司 | Hollow valve plate |
-
2007
- 2007-06-01 CN CNU2007201478478U patent/CN201062573Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884320A (en) * | 2010-04-08 | 2013-01-16 | 贺尔碧格压缩机技术控股有限公司 | Hollow valve plate |
| CN102884320B (en) * | 2010-04-08 | 2015-09-23 | 贺尔碧格压缩机技术控股有限公司 | Hollow valve plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20140601 |