CN103657272B - Low-noise modular automotive air dryer - Google Patents
Low-noise modular automotive air dryer Download PDFInfo
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- CN103657272B CN103657272B CN201310408336.7A CN201310408336A CN103657272B CN 103657272 B CN103657272 B CN 103657272B CN 201310408336 A CN201310408336 A CN 201310408336A CN 103657272 B CN103657272 B CN 103657272B
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- 238000001035 drying Methods 0.000 claims abstract description 43
- 239000002808 molecular sieve Substances 0.000 claims description 17
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000030279 gene silencing Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000036541 health Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 230000008929 regeneration Effects 0.000 description 9
- 238000011069 regeneration method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Drying Of Gases (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a low-noise modular automotive air dryer. The low-noise modular automotive air dryer comprises a valve body, a drying tank, a pilot control valve and an unloading valve, wherein the drying tank, the pilot control valve and the unloading valve are respectively mounted on the valve body; a rubber piston-type pilot control valve is adopted for the pilot control valve; a diaphragm unloading valve is adopted for the unloading valve; a cavity A, a cavity B, a cavity C, an annular cavity D, an energy absorbing air channel chamber E and a cavity F are arranged in the valve body respectively; a first opening, a second opening, a third opening and a fourth opening are formed in the sides of the valve body. A throttling and pressure dividing structure is adopted for the pilot control valve, so that the unloading valve is controlled to open at different degrees twice, thus the compressed air is exhausted for two times; the automotive noise and the urban environmental pollution are reduced; the human health and the urban environment are protected; the pilot control valve is controlled to open and close more precisely and reliably; the unloading valve is simple and reliable, and long in service life; the driving safety is effectively improved.
Description
[technical field]
The present invention relates to vehicle key part field, be specifically related to a kind of air oxygen detrition of low noise block, overanxious and automatically cleaning processor, particularly relate to a kind of Low-noise modular automotive air dryer for systems such as car brakeing, car door and suspensions.
[background technology]
The systems such as air dryer for vehicle is automobile brake, car door and suspension provide complete, clean, effective compressed air, on the safety traffic of automobile and the impact in brake system component life-span very large.Air compressor provides source of the gas, first the input port of air dryer is entered, compressed air is through drying chamber molecular sieve, the effect of filter screen and filter membrane, make it to carry out drying, oil removing and filtration treatment, export from delivery outlet afterwards, and to the inflation of regeneration air tank, the compressed air of delivery outlet arrives the air intake valve of pilot valve simultaneously, off-load valve is opened by pilot valve air intake valve, regeneration gas receiver carries out blowback to drying chamber, when drier delivery outlet pressure drop is to recovery supply gas pressure, off-load valve closing, System recover air feed, drying chamber molecular sieve is made to reach the object recycled.
The pilot valve of air dryer for vehicle in the past adopts diaphragm type control structure, there is valve opening and the coarse problem of closing control, and then has influence on the response accuracy of air dryer for vehicle.Off-load valve adopts metallic piston formula control structure in addition, and complex structure, reliability be low, take up room large and service life is short.In addition, drying chamber adopts drying chamber inner bag and cylinder barrel to be encapsulated as entirety, and after molecular sieve lost efficacy, drying chamber inner bag and cylinder barrel needed integral replacing, causes the high and wasting of resources of maintenance cost.
Also there is the large deficiency of exhaust noise in current air dryer for vehicle, though portioned product is equipped with silencer, but still significantly can not reduce noise pollution, directly jeopardizes occupant's health and pollute urban environment
Existing air dryer for vehicle can only realize once being vented; Exhaust passage is without the structure of energy-absorbing.When air dryer carries out blowback, the compressed air of coming from air tank, by the off-load valve opened, directly enters air, causes exhaust sound large and sharp-pointed, serious harm health.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, a kind of Low-noise modular automotive air dryer is proposed, can realize controlling the unlatching in various degree of twice, off-load valve, compressed air be discharged at twice, reduction noise, effective absorption flowed energy, further, the accuracy that pilot valve opens and closes can be improved, simplify unloader structure, improve the reliability of unloader and service life, maintenance cost can be reduced low and economize on resources.
For achieving the above object, the present invention proposes a kind of Low-noise modular automotive air dryer, comprise valve body, drying chamber, pilot-actuated valve and unloader, described drying chamber, pilot-actuated valve and unloader are arranged on valve body respectively, described pilot-actuated valve adopts rubber piston formula pilot-actuated valve, and described unloader adopts diaphragm type unloader, A chamber is respectively equipped with in described valve body, B chamber, C chamber, D annular compartment, E energy-absorbing air flue room and F chamber, valve body side has first, second mouthful, 3rd mouthful and the 4th mouthful, described first is communicated with D annular compartment, D annular compartment is communicated with the outer annular space of drying chamber, the inner annular space of drying chamber and A chamber, A chamber is communicated with the 3rd mouthful, A chamber is by check valve and C chamber, C chamber communicates with second mouthful, C chamber is communicated with pilot-actuated valve by first segment discharge orifice 26, gas outlet and F chamber when pilot-actuated valve is opened, F chamber is the diaphragm chamber of unloader, the left side of unloader is B chamber, when unloader is opened, B chamber communicates with the roundabout air flue room of E, the gas outlet of the roundabout air flue room of E is the 4th mouthful.
As preferably, described drying chamber comprises cylinder barrel, drying chamber inner bag, molecular sieve, filter membrane, described dry drying chamber inner bag and cylinder barrel are Split type structure, dry tank inner bag is arranged in cylinder barrel, molecular sieve is arranged on drying chamber inner bag, the edge of cylinder barrel is fixedly installed on valve body, is provided with filter membrane between molecular sieve and the cavity of valve body.
As preferably, also comprise compacting ring and some bolts, after edge's employing compacting ring compression of described cylinder barrel, adopt some bolts to be fixedly installed on valve body.
As preferably, described rubber piston formula pilot-actuated valve comprises guide valve blocks, adjusting seat, pressure regulating screw, spring base, pressure spring, push rod and rubber piston valve, described guide valve blocks is arranged in valve body, the two ends of pressure spring are provided with spring base, the left end of pressure spring is provided with push rod, the right-hand member of pressure spring is provided with pressure regulating screw, and the adjusting seat that pressure regulating screw and guide valve blocks are installed is threaded connection, and the left end of push rod is provided with rubber piston valve.
As preferably, described diaphragm type unloader comprises off-load valve rod, off-load valve, diaphragm, push-plate, unloading spring and valve seat, and described off-load valve is arranged on valve seat, and off-load valve rod withstands push-plate behind the door through unloader, the outside of push-plate is provided with diaphragm, is provided with unloading spring between push-plate and valve body.
As preferably, described 4th mouthful is provided with silencing net.
As preferably, described pilot-actuated valve is provided with air intake valve and drain tap, is provided with first segment discharge orifice between described C chamber and the air intake valve of pilot-actuated valve, is provided with second section discharge orifice between the air intake valve of pilot-actuated valve and F chamber; The compressed air of C chamber arrives the air intake valve of pilot-actuated valve through first segment discharge orifice, after pressure reaches air intake valve opening pressure, air intake valve is opened, compressed air is after air intake valve and second section discharge orifice, a part enters F chamber, and another part enters the steam vent in drain tap, the 3rd throttle orifice and adjusting seat.
As preferably, described pilot-actuated valve comprises rubber piston, and described air intake valve is located at the left side of rubber piston, and drain tap is located at the right side of rubber piston; When rubber piston is positioned at high order end, air intake valve is closed, and drain tap is opened; When rubber piston is positioned at low order end, air intake valve is opened, and drain tap is closed.
Beneficial effect of the present invention: pilot-actuated valve of the present invention adopts throttling partial-pressure structure, realize controlling the unlatching in various degree of twice, off-load valve, thus compressed air is discharged at twice, realize small guide vane macro-energy and the large less energy of aperture makes exhaust energy without large fluctuating, reach and reduce peak noise to greatest extent.Roundabout air passage structure, effectively absorbs flowed energy.Present invention reduces internal car noise and city environmental pollution, maintain health and urban environment.In the present invention, pilot valve opens and closes and controls more accurately reliably; Unloader adopts diaphragm type to control, and its structure is more simple and reliable, takes up room little, long service life; And drying chamber adopts drying chamber inner bag and cylinder barrel Split type structure, maintenance cost is low to economize on resources.The present invention significantly improves air dryer for vehicle overall performance and reliability, effectively improves the security of driving.
Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the structural representation of a kind of Low-noise modular automotive air dryer of the present invention.
Wherein: 1-first O-ring seals, 2-off-load valve rod, 3-off-load valve, 4-compacting ring, 5-bolt, 6-filter membrane, 7-cylinder barrel, 8-drying chamber inner bag, 9-molecular sieve, 10-annular core, 11-second O-ring seals, 12-the 3rd O-ring seals, 13-valve body, 14-check valve, 15-the 4th O-ring seals, 16-the 5th O-ring seals, 17-pilot control valve body, 18-adjusting seat, 19-pressure regulating screw, 20-spring base, 21-pressure spring, 22-push rod, 23-the 3rd throttle orifice, 24-rubber piston, 25-second section discharge orifice, 26-first segment discharge orifice, 27-diaphragm, 28-push-plate, 29-unloading spring, 30-the 6th O-ring seals, 31-valve seat, 32-silencing net.A, B, C, D, E, F are respectively six gas flow chamber.A is the air intake valve of pilot-actuated valve, and b is the drain tap of pilot-actuated valve, and f is the steam vent of pilot-actuated valve.
[detailed description of the invention]
Consult Fig. 1, a kind of Low-noise modular automotive air dryer, comprise valve body 13, drying chamber, pilot-actuated valve and unloader, described drying chamber, pilot-actuated valve and unloader are arranged on valve body respectively, described pilot-actuated valve adopts rubber piston formula pilot-actuated valve, and described unloader adopts diaphragm type unloader.Drying chamber is made up of cylinder barrel 7, circular passage D, drying chamber inner bag 8, molecular sieve 9, filter membrane 6, compacting ring 4, is connected with valve body 13, bolt 5 isolating seal by the second O-ring seals 11, the 3rd O-ring seals 12.Pilot-actuated valve is made up of the 4th O-ring seals 15, the 5th O-ring seals 16, pilot control valve body 17, adjusting seat 18, pressure regulating screw 19, spring base 20, pressure spring 21, push rod 22 and rubber piston valve 24.Unloader is made up of the first O-ring seals 1, off-load valve rod 2, off-load valve 3, diaphragm 27, push-plate 28, unloading spring 29, the 6th O-ring seals 30, valve seat 31.
Under first stage working condition, compressed air pressure is less than pressure spring 21 setting, the air intake valve a closed condition now on rubber piston valve 24.Compressed air is entered by K11 mouth, and by circular passage D, after molecular sieve 9 drying of annular core 10, filter membrane 6 and drying chamber inner bag 8 is overanxious, by A chamber, a route K22 mouth, to regeneration air tank air feed, uses for during blowback drying chamber; Check valve 14 is pushed on another road open, by C chamber, to K21 confession gas.
Under second stage working condition, compressed air pressure is greater than pressure spring 21 setting, air intake valve A now on rubber piston valve 24 is in opening, compressed air enters into the F chamber of unloader, act on diaphragm 27, diaphragm 27 is made to promote push-plate 28 and off-load valve rod 2, now off-load valve 3 is opened, the compressed air in B chamber enters air by off-load valve 3 from K3 mouth, unloader doorway sharply declines, regeneration air tank and off-load valve form large pressure reduction, the compressed air of regeneration air tank is by 22 mouthfuls of A chambeies through valve body 13, filter membrane 6, molecular sieve 9, the B chamber of screen pack 10 and valve body, E chamber, off-load valve 3 and silencing net, air is entered to 3 mouthfuls, complete automatically cleaning flush cycle.
A chamber is respectively equipped with in valve body 13, B chamber, C chamber, D annular compartment, E energy-absorbing air flue room and F chamber, the side of valve body 12 has first K1, second mouthful of K21, 3rd mouthful of K22 and the 4th mouthful K3, described first K1 is communicated with D annular compartment, D annular compartment is communicated with the outer annular space of drying chamber, the inner annular space of drying chamber and A chamber, A chamber is communicated with the 3rd mouthful of K22, A chamber is by check valve 14 and C chamber, C chamber communicates with second mouthful of K21, C chamber is communicated with pilot-actuated valve by first segment discharge orifice 26, gas outlet and F chamber when pilot-actuated valve is opened, F chamber is the diaphragm chamber of unloader, the left side of unloader is B chamber, when unloader is opened, B chamber communicates with E energy-absorbing air flue room, the gas outlet of E energy-absorbing air flue room is the 4th mouthful of K3.Pilot-actuated valve is provided with air intake valve a and drain tap b, is provided with first segment discharge orifice 26 between described C chamber and the air intake valve a of pilot-actuated valve, is provided with second section discharge orifice 25 between the air intake valve a of pilot-actuated valve and F chamber; The compressed air of C chamber arrives the air intake valve a of pilot-actuated valve through first segment discharge orifice 26, after pressure reaches the opening pressure of air intake valve a, air intake valve a opens, compressed air is after air intake valve a and second section discharge orifice 25, a part enters F chamber, and another part enters the steam vent f in drain tap b, the 3rd throttle orifice 23 and adjusting seat 18.Described pilot-actuated valve comprises rubber piston 24, and described air intake valve a is located at the left side of rubber piston 24, and drain tap b is located at the right side of rubber piston 24; When rubber piston 24 is positioned at high order end, air intake valve a closes, and drain tap b opens; When rubber piston 24 is positioned at low order end, air intake valve a opens, and drain tap b closes.
Air compressor provides source of the gas, first the first K1 of air dryer is entered, compressed air is through the molecular sieve 9 of drying chamber 8, the effect of annular core 10 and filter membrane 6, compressed air is made to carry out drying, oil removing and filtration treatment, compressed air after process exports from second mouthful of K21 of air dryer, and by the 3rd mouthful of K22 to the inflation of regeneration air tank, the compressed air of second mouthful of K21 arrives the air intake valve a of pilot-actuated valve by the first segment discharge orifice 26 of valve body 13 simultaneously, when compressed air pressure reaches unlatching pilot-actuated valve air intake valve a, air intake valve a opens, compressed air is by pilot-actuated valve air intake valve a, after second section discharge orifice 25, a part enters the diaphragm cavity F of unloader.Because now pilot-actuated valve drain tap b does not close, another part compressed air is by pilot-actuated valve the 3rd throttle orifice 23 and steam vent f, because the pressure of diaphragm chamber F is lower, but diaphragm 27 still promotes off-load valve 3 by push-plate 28, and off-load valve 3 is partially opened; The compressed air of regeneration air tank carries out blowback (regeneration) to the molecular sieve 9 in drying chamber 8, the off-load valve 3 then by partially opening, and enters air through roundabout air flue E and silencing net 32, Jiang Shui, oil and impurity, forms first time exhaust.
When pilot-actuated valve air intake valve a place pressure continues to rise, the drain tap b of pilot-actuated valve closes (the 3rd throttle orifice 23 pressure release passage is closed) gradually, diaphragm chamber F pressure now on valve body 13 sharply rises, diaphragm 27 promotes off-load valve 3 by push-plate 28, off-load valve 3 is opened completely, regeneration gas receiver carries out blowback to drying chamber 8 molecular sieve 9 again, forms second time exhaust.
When delivery outlet pressure drop is to recovery supply gas pressure, off-load valve 3 is closed, System recover air feed, makes drying chamber 8 molecular sieve 9 reach the object recycled.The compressed air that drying tank 8 processes, by the 3rd mouthful of K22 of air dryer, enters into corresponding executing agency.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (6)
1. a Low-noise modular automotive air dryer, comprise valve body, drying chamber, pilot-actuated valve and unloader, described drying chamber, pilot-actuated valve and unloader are arranged on valve body respectively, it is characterized in that: described pilot-actuated valve adopts rubber piston formula pilot-actuated valve, and described unloader adopts diaphragm type unloader, A chamber is respectively equipped with in described valve body, B chamber, C chamber, D annular compartment, E energy-absorbing air flue room and F chamber, valve body side has first, second mouthful, 3rd mouthful and the 4th mouthful, described first is communicated with D annular compartment, D annular compartment is communicated with the outer annular space of drying chamber, the inner annular space of drying chamber and A chamber, A chamber is communicated with the 3rd mouthful, A chamber is by check valve and C chamber, C chamber communicates with second mouthful, C chamber is communicated with pilot-actuated valve by first segment discharge orifice 26, gas outlet and F chamber when pilot-actuated valve is opened, F chamber is the diaphragm chamber of unloader, the left side of unloader is B chamber, when unloader is opened, B chamber communicates with E energy-absorbing air flue room, the gas outlet of E energy-absorbing air flue room is the 4th mouthful, described drying chamber comprises cylinder barrel, drying chamber inner bag, molecular sieve, filter membrane, described dry drying chamber inner bag and cylinder barrel are Split type structure, dry tank inner bag is arranged in cylinder barrel, molecular sieve is arranged on drying chamber inner bag, the edge of cylinder barrel is fixedly installed on valve body, is provided with filter membrane between molecular sieve and the cavity of valve body, described rubber piston formula pilot-actuated valve comprises guide valve blocks, adjusting seat, pressure regulating screw, spring base, pressure spring, push rod and rubber piston valve, described guide valve blocks is arranged in valve body, the two ends of pressure spring are provided with spring base, the left end of pressure spring is provided with push rod, the right-hand member of pressure spring is provided with pressure regulating screw, the adjusting seat that pressure regulating screw and guide valve blocks are installed is threaded connection, and the left end of push rod is provided with rubber piston valve.
2. a kind of Low-noise modular automotive air dryer as claimed in claim 1, is characterized in that: also comprise compacting ring and some bolts, after edge's employing compacting ring compression of described cylinder barrel, adopts some bolts to be fixedly installed on valve body.
3. a kind of Low-noise modular automotive air dryer as claimed in claim 1, it is characterized in that: described diaphragm type unloader comprises off-load valve rod, off-load valve, diaphragm, push-plate, unloading spring and valve seat, described off-load valve is arranged on valve seat, off-load valve rod withstands push-plate behind the door through unloader, the outside of push-plate is provided with diaphragm, is provided with unloading spring between push-plate and valve body.
4. a kind of Low-noise modular automotive air dryer as claimed in claim 1, is characterized in that: described 4th mouthful is provided with silencing net.
5. a kind of Low-noise modular automotive air dryer according to any one of Claims 1-4, it is characterized in that: described pilot-actuated valve is provided with air intake valve and drain tap, be provided with first segment discharge orifice between described C chamber and the air intake valve of pilot-actuated valve, between the air intake valve of pilot-actuated valve and F chamber, be provided with second section discharge orifice; The compressed air of C chamber arrives the air intake valve of pilot-actuated valve through first segment discharge orifice, after pressure reaches air intake valve opening pressure, air intake valve is opened, compressed air is after air intake valve and second section discharge orifice, a part enters F chamber, and another part enters the steam vent in drain tap, the 3rd throttle orifice and adjusting seat.
6. a kind of Low-noise modular automotive air dryer as claimed in claim 5, it is characterized in that: described pilot-actuated valve comprises rubber piston, described air intake valve is located at the left side of rubber piston, and drain tap is located at the right side of rubber piston; When rubber piston is positioned at high order end, air intake valve is closed, and drain tap is opened; When rubber piston is positioned at low order end, air intake valve is opened, and drain tap is closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310408336.7A CN103657272B (en) | 2013-09-09 | 2013-09-09 | Low-noise modular automotive air dryer |
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| CN201310408336.7A CN103657272B (en) | 2013-09-09 | 2013-09-09 | Low-noise modular automotive air dryer |
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| CN103657272A CN103657272A (en) | 2014-03-26 |
| CN103657272B true CN103657272B (en) | 2014-12-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998521B (en) * | 2015-07-10 | 2017-03-22 | 浙江诸暨东港液压机械有限公司 | Three-position three-way type pilot control valve of air dryer of commercial vehicle |
| CN105169898B (en) * | 2015-07-10 | 2017-09-29 | 浙江诸暨东港液压机械有限公司 | A kind of commercial car air dryer vibrates regenerative drying chamber |
| EP3175905A1 (en) * | 2015-12-04 | 2017-06-07 | Haldex Brake Products Aktiebolag | Air drying cartridge, air dryer and commercial vehicle with an air drying cartridge |
| CN107485984B (en) * | 2017-09-19 | 2023-09-26 | 珠海市思卡净化技术有限公司 | Bilateral interlocking end face sealing adsorption type dryer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2620949A3 (en) * | 1987-09-29 | 1989-03-31 | Magneti Marelli Spa | Device for monitoring the regeneration of the filter element of a purifier for a pneumatic braking system for self-propelled vehicles |
| CN201055747Y (en) * | 2007-04-23 | 2008-05-07 | 刘景道 | Air dryer for vehicle environment protection brake |
| CN102728191A (en) * | 2012-07-26 | 2012-10-17 | 瑞立集团瑞安汽车零部件有限公司 | Double-cylinder air drier, compressed air brake system and vehicle |
| CN203329586U (en) * | 2013-05-13 | 2013-12-11 | 浙江诸暨东港液压机械有限公司 | Low-noise automotive air drier |
| CN203564942U (en) * | 2013-09-09 | 2014-04-30 | 浙江诸暨东港液压机械有限公司 | Low-noise energy-saving automotive air dryer |
-
2013
- 2013-09-09 CN CN201310408336.7A patent/CN103657272B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2620949A3 (en) * | 1987-09-29 | 1989-03-31 | Magneti Marelli Spa | Device for monitoring the regeneration of the filter element of a purifier for a pneumatic braking system for self-propelled vehicles |
| CN201055747Y (en) * | 2007-04-23 | 2008-05-07 | 刘景道 | Air dryer for vehicle environment protection brake |
| CN102728191A (en) * | 2012-07-26 | 2012-10-17 | 瑞立集团瑞安汽车零部件有限公司 | Double-cylinder air drier, compressed air brake system and vehicle |
| CN203329586U (en) * | 2013-05-13 | 2013-12-11 | 浙江诸暨东港液压机械有限公司 | Low-noise automotive air drier |
| CN203564942U (en) * | 2013-09-09 | 2014-04-30 | 浙江诸暨东港液压机械有限公司 | Low-noise energy-saving automotive air dryer |
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Denomination of invention: Low-noise modular automotive air dryer Effective date of registration: 20171108 Granted publication date: 20141224 Pledgee: China Co. truction Bank Corp Zhuji branch Pledgor: ZHEJIANG ZHUJI DONGGANG HYDRAULIC PRESSURE MACHINERY Co.,Ltd. Registration number: 2017330000162 |
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Date of cancellation: 20180323 Granted publication date: 20141224 Pledgee: China Co. truction Bank Corp Zhuji branch Pledgor: ZHEJIANG ZHUJI DONGGANG HYDRAULIC PRESSURE MACHINERY Co.,Ltd. Registration number: 2017330000162 |
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Denomination of invention: Low-noise modular automotive air dryer Effective date of registration: 20191029 Granted publication date: 20141224 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Fengqiao sub branch Pledgor: ZHEJIANG BAILI MACHINERY Co.,Ltd. Registration number: Y2019330000151 |
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