CN208221244U - A kind of unpowered recharging oil device of enclosed - Google Patents
A kind of unpowered recharging oil device of enclosed Download PDFInfo
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- CN208221244U CN208221244U CN201820368285.8U CN201820368285U CN208221244U CN 208221244 U CN208221244 U CN 208221244U CN 201820368285 U CN201820368285 U CN 201820368285U CN 208221244 U CN208221244 U CN 208221244U
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- check valve
- pressure
- oil
- cylinder body
- working bladder
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- 239000003921 oil Substances 0.000 claims abstract description 77
- 230000007704 transition Effects 0.000 claims abstract description 24
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 229910001060 Gray iron Inorganic materials 0.000 claims abstract description 3
- 239000010729 system oil Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 description 8
- 238000005336 cracking Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The utility model provides a kind of unpowered recharging oil device of enclosed, including gray iron, working bladder, sealing ring, transition piece, breather check valve, exhaust check valve, air bag；Cylinder cap is equipped with oil inlet and outlet, and cylinder cap is fixedly connected with cylinder body；Working bladder is arranged in cylinder body, and cylinder body is equipped with inflating port, and transition piece is arranged outside cylinder body, and working bladder is connected by inflating port with excessive connector；Breather check valve one end is mounted at the air inlet of transition piece, and the other end is connected with air bag；Exhaust check valve one end is mounted on the exhaust ports of transition piece, and the other end is communicated with air；Sealing ring is arranged at inflating port to seal, prevents hydraulic oil from leaking by inflating port.The recharging oil device of the utility model automatically controls work gas intraluminal pressure by check valve, to control the oil liquid pressure in seal-off pressure oil tank, oil liquid is avoided with air phenomena such as directly contacting caused air pocket, structure is simple, it is easy to operate, it can be achieved that degree is high.
Description
Technical field
The utility model relates to a kind of hydraulic system recharging oil device, in particular to a kind of unpowered repairing of closed type hydraulic system
Device.
Background technique
Closed type hydraulic system is compact-sized, and the pressure loss is small, has a wide range of applications in engineering truck, ship.But
There are slow oil liquid leakages for closed type hydraulic system, generally require additional oil-supplementing system to supplement these leakages, commonly
Oil-supplementing system mostly uses small-sized open type oil tank and slippage pump, in this way complicates the hydraulic and electrical control of hydraulic system, at
This raising.Another method is that seal-off pressure oil tank for hydraulic system provides a kind of unpowered repairing scheme, seal-off pressure oil tank
There are mainly two types of ways of realization, first is that installing pre-compressed air cleaner on seal-off pressure oil tank, pass through air in control oil tank
Fixing fabric structure oil pressure inside the tank, but such method oil liquid is directly contacted with air, air when hydraulic system works in oil liquid
It is easily separated to come out, bubble is generated, so that hydraulic pump oil absorption capacity be caused to decline, hydraulic system generation is caused to be creeped and noise；Two
It is seal-off pressure oil tank internal airbag, air is pre-charged in air bag, guarantees there is certain operating pressure in oil tank, but this
The volume of air bag changes by a small margin according to the oil liquid variable quantity in oil tank in kind method, small to operating pressure adjusting in oil tank, when
When oil tank inner fluid variable quantity is big, function and effect are unobvious.
For hydraulic system recharging oil device or system, the prior art is as follows:
By taking Chinese patent 201510062282.2 as an example, oil liquid, valve body shapes are supplemented to serial-parallel motor by Fill valve
Complexity controls the conducting of different valve ports by the different location of spool, high to the surface finish requirements of spool, and manufacture difficulty is big.
By taking Chinese patent 201510108780.6 as an example, the repairing to hydraulic system is realized by hydraulic cylinder, due to gas
The air chamber and fluid chamber of cylinder are realized by cylinder piston and are sealed, and require height to the cylinder piston accuracy of manufacture, furthermore hydraulic cylinder
The oil liquid amount of fluid chamber realize that therefore oil-supplementing system needs to add additional air supply system by regulating gas cylinder gas source, operation
It is complicated.
By taking Chinese patent 21410603787.0 as an example, the repairing to operating oil tank, the oil liquid of fuel tank are realized by slippage pump
It is also easy to produce air pocket, therefore not applicable when the absolute pressure of hydraulic system somewhere oil liquid is less than air separation pressure at this time with air
In closed type hydraulic system.
Utility model content
In view of the deficiency of the prior art, the utility model lies in that providing a kind of unpowered recharging oil device of enclosed,
Repairing for hydraulic system.
The utility model solves technical solution used by above-mentioned technical problem:
A kind of unpowered recharging oil device of enclosed, including gray iron, working bladder, sealing ring, transition piece, air inlet
Check valve, exhaust check valve, air bag；Cylinder cap is equipped with oil inlet and outlet, and cylinder cap is fixedly connected with cylinder body；Working bladder setting
In cylinder body, cylinder body be equipped with inflating port, transition piece be arranged outside cylinder body, working bladder by inflating port with excessively connect
Part is connected；Breather check valve one end is mounted at the air inlet of transition piece, and the other end is connected with air bag；Exhaust is unidirectional
Valve one end is mounted on the exhaust ports of transition piece, and the other end is communicated with air；Sealing ring is arranged at inflating port to seal, prevents
Hydraulic oil is leaked by inflating port.
Further, when work gas intraluminal pressure is lower than breather check valve setting pressure, breather check valve is opened；Work as work
When making intracapsular pressure higher than exhaust check valve setting pressure, exhaust check valve is opened.
Further, transition piece is cylindrical, and a side end face of transition piece is equipped with connector, and connector protrudes into
The inflating port of cylinder body is simultaneously connected with working bladder, and an air inlet and an exhaust is arranged in another side end face of transition piece
Mouthful.
Further, when hydraulic oil is very few in cylinder body, working bladder volume becomes larger, and guarantees that the intracorporal pressure of cylinder will not mistake
It is low, enable cylinder body effectively to hydraulic system repairing；When hydraulic oil is excessive in cylinder body, working bladder volume becomes smaller, and protects
It is not too high to demonstrate,prove cylinder interior pressure, in safe handling range.
Further, when the volume of working bladder becomes larger, interior pressure becomes smaller, when reaching breather check valve setting pressure,
Breather check valve is opened, and air bag is inflated to working bladder, sets pressure when work gas intraluminal pressure is higher than breather check valve
When, breather check valve is closed；When working bladder volume becomes smaller, interior pressure becomes larger, when reaching exhaust check valve setting pressure,
Exhaust check valve is opened, and gas in working bladder is discharged in air, when work gas intraluminal pressure is set lower than exhaust check valve
When constant-pressure, exhaust check valve is closed.
The beneficial effects of the utility model are:
(1) the closed type hydraulic system recharging oil device that the utility model is made up of seal-off pressure oil tank, working bladder, effectively
Contact of the hydraulic oil with air is avoided, is reduced in hydraulic system when absolute pressure is less than air separation pressure, the sky in oil liquid
Air elutriation goes out, caused by air pocket, noise phenomena such as.
(2) the utility model controls the operating pressure in working bladder by breather check valve and exhaust check valve, can be with
Be effectively ensured in seal-off pressure oil tank oil liquid amount fluctuation it is larger when, hydraulic system high efficiency oil absorbency, and working bladder
Operating pressure can be automatically adjusted by breather check valve and exhaust check valve, do not needed additional gas source and manually controlled work gas
Intracapsular pressure, it is easy to operate.
(3) the unpowered recharging oil device that the utility model is made up of seal-off pressure oil tank and air bag, does not need external
Power source saves cost, compact-sized.
(4) recharging oil device of the utility model can carry out repairing for Hydraulic Elements such as asymmetric cylinder, motor, pumps, fit
It is strong with property.
Detailed description of the invention
Fig. 1 is the unpowered recharging oil device schematic diagram of closed type hydraulic system of the utility model.
Specific embodiment
The technical solution of the utility model is described specifically with reference to embodiments, embodiment is only used for further illustrating
The utility model, and the restriction not to the utility model.
Referring to attached drawing 1, the utility model provides a kind of unpowered recharging oil device of closed type hydraulic system, including cylinder body 2, cylinder cap
1, working bladder 3, sealing ring 4, transition piece 5, breather check valve 6, exhaust check valve 8, air bag 7；Cylinder cap 1 is equipped with
Oil inlet and outlet, cylinder cap 1 are bolted with cylinder body 2, and the two collectively constitutes seal-off pressure oil tank, and working bladder 3 passes through cylinder body 2
On inflating port be connected with transition piece 5,6 one end of breather check valve is mounted at 5 air inlet of transition piece, the other end with
Air bag 7 is connected, and 8 one end of exhaust check valve is mounted on 5 exhaust ports of transition piece, and the other end is communicated with air, cylinder body 2
Inflating port is sealed with transition piece 5,3 contact site of working bladder by sealing ring 4, prevents hydraulic oil from passing through on cylinder body 2
Inflating port leakage.
Seal-off pressure oil tank is steel construction, and cylinder body 2 is bolted with cylinder cap 1, to prevent hydraulic fluid leak herein,
It can be in the place of being bolted plus elastomeric pad.Cylinder cap 1 is equipped with an oil inlet and outlet, the hydraulic oil in seal-off pressure oil tank by into
Oil outlet is closed type hydraulic system repairing.Cylinder body 2 is equipped with an inflating port, completes the inflation to working bladder 3.Seal-off pressure oil
Tank can be connected by hydraulic control one-way valve with hydraulic system, and interior hydraulic oil keeps certain pressure, guarantees have to hydraulic system
Repairing is imitated,.
Nitrile rubber can be used in working bladder 3, and volume can change according to the The hydraulic oil in oil tank, and when use puts
It sets inside seal-off pressure oil tank.When 3 volume change of working bladder, air pressure inside changes, and can pass through breather check valve 6, exhaust
Check valve 8 adjusts air pressure in air bag, remains at operating pressure in safe and stable range, guarantees this recharging oil device
High efficiency repairing.
Transition piece 5 is steel construction, and shape is a cylindrical body, and a side end face of cylinder is a circular inflatable mouth, another
Side end face is provided with an air inlet and an exhaust outlet, mainly passes through the unfixed working bladder 3 of shape with air bag 7
Valve body connects together.
Breather check valve 6, exhaust check valve 8 can automatically turn on valve, realize air bag internal pressure by setting initial pressure
The automatic adjustment of power.When pressure sets pressure lower than breather check valve 6 in working bladder 3, breather check valve 6 is opened；Work as work
When making in air bag 3 pressure and being higher than 8 pressure of exhaust check valve, exhaust check valve 8 is opened.
Nitrile rubber can be used in air bag 7, before use, being pre-charged with a certain amount of gas in air bag 7, makes to inflate
Pressure is greater than pressure in working bladder 3 in air bag 7, and when guaranteeing that breather check valve 6 is opened, air bag 7 can effectively be work
Make the inflation of air bag 3.
Embodiment 1, the first working condition.
When hydraulic system needs big flow repairing, Hydraulic System Oil hydraulic coupling is low, seal-off pressure oil tank inner fluid pressure
Greater than fluid-control one-way valve opening pressure, hydraulic control one-way valve is opened, and seal-off pressure oil tank is to a large amount of repairings of hydraulic system.When closed pressure
When the outflow of power oil tank inner fluid is more, pressure inside the tank reduces, and pressure is greater than pressure inside the tank, 3 volume of working bladder in working bladder 3
Becoming larger, pressure inside the tank increases, and work gas intraluminal pressure reduces at this time, when pressure is reduced to 6 cracking pressure of breather check valve, into
Gas check valve 6 is opened, and air bag 7 is inflated to working bladder 3, when pressure is greater than the unlatching pressure of breather check valve 6 in working bladder 3
When power, breather check valve 7 is closed.At this point, also not reaching equilibrium-like with pressure in working bladder 3 if oily pressure inside the tank is relatively low
When state, 3 volume of working bladder becomes larger, and pressure inside the tank is further enlarged, and breather check valve 6 is opened, then carries out an inflation cycle,
Until pressure inside the tank and gasbag pressure reach equilibrium state.Due to the inflation of working bladder 3, seal-off pressure oil pressure inside the tank is improved
Pressure state before flowing out to oil liquid is ready for next repairing.
Embodiment 2, second of working condition.
When hydraulic system needs big flow oil return, Hydraulic System Oil hydraulic coupling is high, is greater than fluid-control one-way valve opening pressure,
Hydraulic control one-way valve is opened, the oil return into seal-off pressure oil tank, and pressure inside the tank increases, when being greater than pressure in working bladder 3, work
Air bag volume becomes smaller, and intracapsular pressure increases, and when being greater than 8 cracking pressure of exhaust check valve, exhaust check valve 8 is opened, work
Air bag 3 starts to be vented, until pressure is lower than 8 cracking pressure of exhaust check valve, exhaust check valve 8 is closed.At this time pressure inside the tank with
3 pressure of working bladder reaches balance.The timely exhaust of working bladder 3 avoids its interior pressure excessive, guarantees the peace of working bladder 3
Full reliably working.
Embodiment 3, the third working condition.
When hydraulic system needs small flow repairing, Hydraulic System Oil hydraulic coupling is low, seal-off pressure oil tank inner fluid pressure
Greater than fluid-control one-way valve opening pressure, hydraulic control one-way valve is opened, and seal-off pressure oil tank is to a large amount of repairings of hydraulic system.It is closed at this time
The outflow of pressure oil tank inner fluid is few, and oily pressure inside the tank variation will not cause a wide range of increase of 3 volume of working bladder, work gas
When pressure increases also not up to 6 cracking pressure of breather check valve in capsule 3, seal-off pressure oil pressure inside the tank and 3 pressure of working bladder
Equilibrium state can be reached by the volume change of working bladder 3, guarantee that seal-off pressure oil pressure inside the tank can be efficiently next time
Repairing is ready.
Embodiment 4, the 4th kind of working condition.
When hydraulic system needs small flow oil extraction, Hydraulic System Oil hydraulic coupling is high, is greater than fluid-control one-way valve opening pressure,
Hydraulic control one-way valve is opened, and to seal-off pressure oil tank oil return, pressure inside the tank increases, and 3 volume of working bladder becomes smaller, but is not up to vented
When 8 cracking pressure of check valve, seal-off pressure oil pressure inside the tank and 3 pressure of working bladder can be become by the volume of working bladder 3
Change reaches equilibrium state, and working bladder 3 works in safe range.
Claims (5)
1. a kind of unpowered recharging oil device of enclosed, it is characterized in that: including gray iron, working bladder, sealing ring, transition connection
Part, breather check valve, exhaust check valve, air bag；Cylinder cap is equipped with oil inlet and outlet, and cylinder cap is fixedly connected with cylinder body；Work
Air bag be arranged in cylinder body, cylinder body be equipped with inflating port, transition piece be arranged outside cylinder body, working bladder by inflating port with
Excessive connector is connected；Breather check valve one end is mounted at the air inlet of transition piece, and the other end is connected with air bag；
Exhaust check valve one end is mounted on the exhaust ports of transition piece, and the other end is communicated with air；Sealing ring is set at inflating port
Sealing prevents hydraulic oil from leaking by inflating port.
2. the unpowered recharging oil device of a kind of enclosed according to claim 1, characterized in that when work gas intraluminal pressure is lower than
When breather check valve sets pressure, breather check valve is opened；When work gas intraluminal pressure is higher than exhaust check valve setting pressure,
Exhaust check valve is opened.
3. the unpowered recharging oil device of a kind of enclosed according to claim 1, characterized in that transition piece is cylindrical,
One side end face of transition piece is equipped with connector, and connector protrudes into the inflating port of cylinder body and is connected with working bladder, and transition connects
An air inlet and an exhaust outlet is arranged in another side end face of fitting.
4. the unpowered recharging oil device of a kind of enclosed according to claim 1, characterized in that when hydraulic oil is very few in cylinder body
When, working bladder volume becomes larger, and guarantees that the intracorporal pressure of cylinder will not be too low, cylinder body is effectively mended to hydraulic system
Oil；When hydraulic oil is excessive in cylinder body, working bladder volume becomes smaller, and guarantees that cylinder interior pressure is not too high, in safe handling model
In enclosing.
5. the unpowered recharging oil device of a kind of enclosed according to claim 1, characterized in that the volume of working bladder becomes larger
When, interior pressure becomes smaller, and when reaching breather check valve setting pressure, breather check valve is opened, and air bag is filled to working bladder
Gas, when work gas intraluminal pressure is higher than breather check valve setting pressure, breather check valve is closed；When working bladder volume becomes smaller
When, interior pressure becomes larger, and when reaching exhaust check valve setting pressure, exhaust check valve is opened, and gas in working bladder is discharged
Into air, when work gas intraluminal pressure is lower than exhaust check valve setting pressure, exhaust check valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368285.8U CN208221244U (en) | 2018-03-19 | 2018-03-19 | A kind of unpowered recharging oil device of enclosed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368285.8U CN208221244U (en) | 2018-03-19 | 2018-03-19 | A kind of unpowered recharging oil device of enclosed |
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| Publication Number | Publication Date |
|---|---|
| CN208221244U true CN208221244U (en) | 2018-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457936A (en) * | 2018-03-19 | 2018-08-28 | 浙江大学 | A kind of unpowered recharging oil device of enclosed |
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2018
- 2018-03-19 CN CN201820368285.8U patent/CN208221244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457936A (en) * | 2018-03-19 | 2018-08-28 | 浙江大学 | A kind of unpowered recharging oil device of enclosed |
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