CN113187771A - Gas-liquid isolated automatic oil-supplementing pressure cylinder - Google Patents
Gas-liquid isolated automatic oil-supplementing pressure cylinder Download PDFInfo
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- CN113187771A CN113187771A CN202110488450.XA CN202110488450A CN113187771A CN 113187771 A CN113187771 A CN 113187771A CN 202110488450 A CN202110488450 A CN 202110488450A CN 113187771 A CN113187771 A CN 113187771A
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- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 230000001502 supplementing effect Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 142
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 230000004313 glare Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to the field of hydraulic control equipment, in particular to a gas-liquid isolated automatic oil supplementing pressure cylinder which is characterized in that one side of the axis of a connecting body is connected with a cylinder barrel, the other side of the axis of the connecting body is connected with an oil cylinder barrel, a conical reset spring is arranged between a cylinder piston and the connecting body, the cylinder piston is connected with an oil cylinder piston through a piston rod, and a composite sealing ring is arranged between the connecting body and the piston rod; the connecting body is provided with a first oil supplementing hole, the oil cylinder piston is provided with a second oil supplementing hole, and the oil storage pot is communicated with the inside of the oil cylinder barrel through the first oil supplementing hole and the second oil supplementing hole; and a check valve is arranged between the piston rod and the oil cylinder piston and is positioned on a channel between the first oil supplementing hole and the second oil supplementing hole. The invention has the beneficial effects that: 1) and the conical return spring is adopted, so that instability can be avoided. 2) The three-layer seal is adopted to realize the effective isolation of two media of gas and liquid. 3) Can be applied to various occasions. 4) The manufacturing cost is saved, and the reliability of equipment operation is improved.
Description
Technical Field
The invention relates to the field of hydraulic control equipment, in particular to a gas-liquid isolated automatic oil supplementing pressure cylinder.
Background
The working principle of the gas-liquid pressure cylinder is that an oil cylinder and a cylinder are integrally combined, air pressure is used as a power source, and the low-pressure air pressure is increased by several times or even dozens of times of oil pressure by utilizing the ratio of the sectional areas of a cylinder piston of the pressure cylinder and a piston of a hydraulic cylinder and the Pascal energy conservation principle, so that the purpose of pressure increase is achieved.
The application number is 201721928373.0's chinese utility model patent discloses a quick type gas-liquid isolation pressurized cylinder, the protecgulum, fast-forward cylinder, high-pressure protecgulum, high-pressure hydro-cylinder, lid, pressurized cylinder and hou gai meet in proper order behind high pressure, set up fast-forward cylinder piston and piston rod in the fast-forward cylinder, set up the pressure boost piston rod among the pressurized cylinder, set up the pressure boost piston of being connected with the pressure boost piston rod between pressurized cylinder and the hou gai, high-pressure hydro-cylinder and oil storage bucket intercommunication. Oil and gas are separated by oil-gas isolation without contacting with each other, so that the defects of the oil-gas mixed gas-liquid pressure cylinder technology in the prior art are overcome.
The utility model discloses an application number is 201820164726.2's chinese utility model patent discloses an oil gas isolated form gas-liquid pressure cylinder, including gas-liquid pressure cylinder and high-pressure oil cylinder, wherein: the gas-liquid pressure cylinder comprises a high-pressure oil cylinder and a pressure cylinder which are axially connected through a pressure middle cover, a pressure shaft hole is formed in the axis of the pressure middle cover, a pressure piston rod penetrates through the pressure middle cover, a pressure oil middle cover is arranged on the high-pressure oil cylinder, the pressure middle cover and the pressure oil middle cover are integrally arranged, a pressure oil way is arranged between the high-pressure oil cylinder and communicated with the pressure shaft hole through the pressure oil middle cover and the pressure middle cover, and the pressure oil way is sealed when the pressure piston rod is in the pressure shaft hole.
The above structure has the following disadvantages: 1) when the cylindrical reset spring is compressed quickly, the piston and the piston rod are easy to vibrate in a severe high frequency mode and collide with the cylinder barrel, and the cylinder barrel is easy to lose. 2) When the piston vibrates violently at high frequency, the piston collides with the cylinder body easily, generates huge noise and causes harm to operators. 3) The oil gas has poor isolation effect, causes hydraulic oil loss and pollutes a gas circuit system, and affects the reliable operation of the pressure cylinder.
Disclosure of Invention
The invention aims to provide a gas-liquid isolated automatic oil-supplementing pressure cylinder, which overcomes the defects of the prior art, adopts a conical reset compression spring, can play a role in buffering, and avoids generating impact noise; the three layers of seals realize effective isolation of two media of gas and oil; the hydraulic oil in the automatic compensation oil way can be realized, the structure is simple, the part processing difficulty is reduced, the manufacturing cost can be saved, and the reliability of the operation of the equipment is improved.
In order to solve the problems, the invention adopts the following technical scheme:
the gas-liquid isolated automatic oil supplementing pressure cylinder is characterized by comprising a connecting body, a cylinder barrel, an oil cylinder barrel, a cylinder piston, an oil storage pot, a piston rod and a return spring, wherein one side of the axis of the connecting body is connected with the cylinder barrel, the other side of the axis of the connecting body is connected with the oil cylinder barrel, the cylinder piston is arranged in the cylinder barrel, the conical return spring is arranged between the cylinder piston and the connecting body, the oil cylinder piston is arranged in the oil cylinder barrel, the cylinder piston and the oil cylinder piston are connected through the piston rod, and a composite sealing ring is arranged between the connecting body and the piston rod; an oil storage pot is connected in the vertical direction of the axis of the connecting body, a first oil supplementing hole is formed in the connecting body, a second oil supplementing hole is formed in the oil cylinder piston, and the oil storage pot is communicated with the interior of the oil cylinder barrel through the first oil supplementing hole and the second oil supplementing hole; a check valve is arranged between the piston rod and the oil cylinder piston, the check valve is positioned on a channel between the oil supplementing hole I and the oil supplementing hole II, and a moving space of 2-3 mm is formed in the check valve relative to the end part of the piston rod; an air inlet is formed in the air cylinder barrel, and an oil outlet is formed in the oil cylinder barrel.
Furthermore, the composite sealing ring comprises any two or three combinations of a rectangular sealing ring, a framework oil seal, an O-shaped ring, a U-shaped oil seal, a V-shaped oil seal, a Y-shaped oil seal, a Glare ring and a Stent seal for the oil cylinder and the air cylinder, wherein the opening directions of any two one-way opening sealing rings are arranged back to back.
Furthermore, the check valve includes valve body, end face seal circle and U-shaped fastener, and the end seal department of valve body is equipped with end face seal circle, and the afterbody of valve body is equipped with U-shaped fastener and piston rod tip draw-in groove accordant connection.
Furthermore, an antifriction ring groove is arranged on the excircle of the oil cylinder piston, and the width of the antifriction ring groove accounts for one third to one half of the sealing length of the oil cylinder piston.
Furthermore, any one of a rectangular sealing ring, a V-shaped ring or a framework oil seal is arranged between the cylinder barrel and the cylinder piston.
Furthermore, any one of a U-shaped oil seal, a V-shaped oil seal, a Y-shaped oil seal, a Glare ring and a Stent seal is arranged between the oil cylinder piston and the oil cylinder barrel.
Furthermore, a deflation valve is arranged on the side wall of the cylinder barrel and/or the oil cylinder barrel.
Further, any one of HL type, HM type, HR type and HG type hydraulic oil is filled in the oil storage pot.
Furthermore, the diameter ratio of the cylinder piston to the oil cylinder piston is 3.0-3.5: 1.
Compared with the prior art, the invention has the beneficial effects that: 1) through adopting toper compression spring that resets, can play the effect of buffering, avoid producing the impulsive noise, the toper structure is more stable, can avoid long-time concertina movement to cause the unstability, makes the structure inefficacy. 2) The three-layer seal is adopted to realize effective isolation of two media, namely gas and liquid, and the pollution of hydraulic oil to a gas circuit is avoided, so that the reliable operation of equipment is influenced. 3) The hydraulic oil in the oil circuit can be automatically compensated, and the hydraulic oil can be applied to various occasions as a simplified hydraulic driver. 4) The structure is reasonable, the processing difficulty of parts is obviously reduced, on one hand, the manufacturing cost can be saved, on the other hand, the running reliability of the equipment can be improved, and the whole service life of the equipment is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
fig. 4 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1-connecting body, 2-cylinder barrel, 3-oil cylinder barrel, 4-cylinder piston, 5-oil cylinder piston, 6-oil storage pot and 7-piston rod; 8-a return spring; 9-composite sealing ring; 10-oil supply hole I; 11-oil supplementing hole II; 12-a check valve; 13-an air intake; 14-oil outlet holes; 15-antifriction ring grooves; 16-rectangular sealing rings; 17-Y type oil seal; 18-a mounting bracket; 19-a purge valve; 20-a breather valve; 121-a valve body; 122-end face seal ring; 123-U-shaped clamping pieces; 124-circlip for hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the application, it is noted that, unless otherwise explicitly specified or limited, relational terms such as first and second, and the like may be used herein only to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any such actual relationship or order between such entities or operations. Moreover, the terms "mounted," "disposed," "connected," and the like, are to be construed broadly and include, for example, "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Fig. 1-4 are schematic structural views of an embodiment of the gas-liquid isolated automatic oil-supplementing pressure cylinder of the present invention, which includes a connector 1, a cylinder barrel 2, an oil cylinder barrel 3, a cylinder piston 4, a cylinder piston 5, an oil storage pot 6, a piston rod 7 and a return spring 8, wherein one side of the axis of the connector 1 is connected with the cylinder barrel 2, the other side of the axis of the connector 1 is connected with the oil cylinder barrel 3, the cylinder barrel 2 is internally provided with the cylinder piston 4, the conical return spring 8 is arranged between the cylinder piston 4 and the connector 1, the cylinder piston 5 is arranged in the oil cylinder barrel 3, the cylinder piston 4 and the cylinder piston 5 are connected through the piston rod 7, and a composite seal ring 9 is arranged between the connector 1 and the piston rod 7; an oil storage pot 6 is connected to the axis of the connecting body 1 in the vertical direction, a first oil supplementing hole 10 is formed in the connecting body 1, a second oil supplementing hole 11 is formed in the oil cylinder piston 5, and the oil storage pot 6 is communicated with the inside of the oil cylinder barrel 3 through the first oil supplementing hole 10 and the second oil supplementing hole 11; a check valve 12 is arranged between the piston rod 7 and the oil cylinder piston 5, and the check valve 12 is positioned on a channel between the first oil supply hole 10 and the second oil supply hole 11; an air inlet 13 is arranged on the cylinder barrel 2, and an oil outlet 14 is arranged on the oil cylinder barrel 3. The connecting body 1 may be provided with a mounting bracket 18 for mounting and fixing with an adjacent device.
In the embodiment, the composite seal ring 9 is a combination of a rectangular seal ring and two Y-shaped oil seals, wherein the opening directions of the two Y-shaped oil seals are arranged back to back, so that good sealing performance can be ensured, the air cavity and the oil cavity are separated, the hydraulic oil is prevented from polluting a compressed air pipeline, and the oil supplementing efficiency of the pressure cylinder is improved.
The check valve 12 comprises a valve body 121, an end face seal ring 122 and a U-shaped clamping piece 123, the end face seal ring 122 is arranged at the end sealing position of the valve body 121, the U-shaped clamping piece 123 is arranged at the tail of the valve body 121 and is connected with a clamping groove at the end of the piston rod 7 in a matched mode, the clamping groove is used for fixing through a hole, the clamping spring 124 is used for connecting the check valve 12 with the oil cylinder piston 5 through the hole, and the check valve 12 has a moving space of 2-3 mm relative to the piston rod and is connected in a hinged mode.
The outer circle of the oil cylinder piston 5 is provided with an antifriction ring groove 15, the width of the antifriction ring groove 15 accounts for one third to one half of the sealing length of the oil cylinder piston 5, the antifriction ring groove 15 can play a role in reducing the friction area of the oil cylinder piston 5, and meanwhile, partial lubricating oil can be stored in the groove, so that the moving resistance of the oil cylinder piston 5 can be further reduced. In order to realize better pressurization, the diameter ratio of the cylinder piston 4 to the oil cylinder piston 5 is 3.0-3.5: 1, preferably 3.2: 1, the supercharging proportion under the ratio is not less than 10, the device has small volume and wide application range.
A rectangular sealing ring 16 is arranged between the cylinder barrel 2 and the cylinder piston 4. And a Y-shaped oil seal 17 is arranged between the oil cylinder piston 5 and the oil cylinder barrel 3, so that the corresponding sealing requirement is ensured. The inner cavity of the cylinder barrel 2 is communicated with the outside through a breather valve 20, and the side wall of the oil cylinder barrel 3 is provided with a release valve 19, so that the pressure can be released when the pressure in the cylinder barrel is too high, and the potential safety hazard is avoided.
Any one of HL type, HM type, HR type and HG type hydraulic oil is filled in the oil storage pot 6.
The working process of the gas-liquid isolated automatic oil supplementing pressure cylinder comprises the following steps: when low-pressure (generally 0.6-0.8 MPa) compressed air enters the cylinder barrel 2 through the air inlet 13, the cylinder piston 4 is pushed to move forwards, the compression force of the conical return spring 8 is gradually increased, the cylinder piston 4 is ensured to work stably, and large impact force cannot be generated. The cylinder piston 4 is connected to one end of the piston rod 7, the other end of the piston rod 7 is connected with the check valve 12, the check valve 12 is installed in a socket groove at one end of the cylinder piston 5, and the check valve 12 is fixed and ensured not to fall off through the elastic retainer ring. The piston rod 3 is pushed by the cylinder piston 4 to prop against the check valve 12, so that the oil cylinder piston 5 and the cylinder piston are pushed to move forwards together, and according to the force balance principle, the force of the cylinder piston 4 acting on the piston rod 3 is equal to the force of the oil cylinder piston 5 acting on the piston rod 3 in magnitude and opposite in direction; according to the Pascal energy conservation principle, the thrust of air pressure to the cylinder piston 4 is equal to the product of the pressure of compressed air and the area of the cylinder piston 4, the thrust of hydraulic pressure to the oil cylinder piston 5 is equal to the product of the pressure of liquid and the area of the oil cylinder piston 5, the area of the cylinder piston 4 is several times or even dozens of times of the area of the oil cylinder piston 5, and the hydraulic pressure of several times or even dozens of times of the pressure in the air cylinder is generated in the hydraulic cylinder, so that the function of pressurization is realized.
In particular, the connecting passage between the cylinder tube 3 of the booster cylinder and the oil storage pot 6 is closed and filled with hydraulic oil. When no compressed air acts on the cylinder piston 4, the cylinder piston 4 returns to the original position under the action of the return spring 8, and the piston rod 7 drives the cylinder piston to return to the original position through the check valve 12. When cylinder piston 4 begins to reset, pulling check valve 12 breaks away from the sealed face of cylinder piston 5, produce 2~3 mm's clearance between, when the oil cylinder 3 is interior when the oil mass is not enough because of leaking or other reasons appear, hydraulic oil in the oil storage kettle 6 will be through mend oilhole one 10, mend two 11 entering into in the oil cylinder 3 of oilhole, when compressed gas promotes cylinder piston antedisplacement, piston rod 7 can promote check valve 12 and tightly press on the sealed face of cylinder piston 5, ensure that the hydraulic oil in the oil cylinder can not flow out through mend oilhole two 11, thereby realize the function of pressure boost.
In particular, the piston rod 7, the check valve 12 and the oil cylinder piston 5 are in a movable connection structure and are not completely fixed, the structure reduces the concentricity requirement of the air cylinder piston and the oil cylinder piston, greatly reduces the processing difficulty, improves the feasibility of the pressure cylinder meeting the use requirement, and further reduces the manufacturing cost. For hydraulic equipment which only needs a small amount of hydraulic oil to drive work, the booster cylinder can completely meet the use requirement without additionally configuring a hydraulic station.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention.
Claims (9)
1. The gas-liquid isolated automatic oil supplementing pressure cylinder is characterized by comprising a connecting body, a cylinder barrel, an oil cylinder barrel, a cylinder piston, an oil storage pot, a piston rod and a return spring, wherein one side of the axis of the connecting body is connected with the cylinder barrel, the other side of the axis of the connecting body is connected with the oil cylinder barrel, the cylinder piston is arranged in the cylinder barrel, the conical return spring is arranged between the cylinder piston and the connecting body, the oil cylinder piston is arranged in the oil cylinder barrel, the cylinder piston and the oil cylinder piston are connected through the piston rod, and a composite sealing ring is arranged between the connecting body and the piston rod; an oil storage pot is connected in the vertical direction of the axis of the connecting body, a first oil supplementing hole is formed in the connecting body, a second oil supplementing hole is formed in the oil cylinder piston, and the oil storage pot is communicated with the interior of the oil cylinder barrel through the first oil supplementing hole and the second oil supplementing hole; a check valve is arranged between the piston rod and the oil cylinder piston, the check valve is positioned on a channel between the oil supplementing hole I and the oil supplementing hole II, and a moving space of 2-3 mm is formed in the check valve relative to the end part of the piston rod; an air inlet is formed in the air cylinder barrel, and an oil outlet is formed in the oil cylinder barrel.
2. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein the composite sealing ring comprises any two or three combinations of a rectangular sealing ring, a framework oil seal, an O-shaped ring, a U-shaped oil seal, a V-shaped oil seal, a Y-shaped oil seal, a Glare ring and a Stent seal for an oil cylinder and a cylinder, wherein the opening directions of any two one-way opening sealing rings are arranged back to back.
3. The gas-liquid isolation automatic oil-supplementing pressure cylinder according to claim 1, wherein the check valve comprises a valve body, an end face seal ring and a U-shaped clamping piece, the end face seal ring is arranged at the end sealing part of the valve body, and the U-shaped clamping piece is arranged at the tail part of the valve body and is in matched connection with the clamping groove at the end part of the piston rod.
4. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein a friction-reducing ring groove is formed on the outer circle of the cylinder piston, and the width of the friction-reducing ring groove accounts for one third to one half of the sealing length of the cylinder piston.
5. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein any one of a rectangular sealing ring, a V-shaped ring or a framework oil seal is arranged between the cylinder barrel and the cylinder piston.
6. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein any one of a U-shaped oil seal, a V-shaped oil seal, a Y-shaped oil seal, a Glare ring and a Stent seal is arranged between the oil cylinder piston and the oil cylinder barrel.
7. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein a gas-release valve is arranged on the side wall of the cylinder barrel and/or the oil cylinder barrel.
8. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein any one of HL type, HM type, HR type and HG type hydraulic oil is filled in the oil storage pot.
9. The gas-liquid isolated automatic oil-supplementing pressure cylinder according to claim 1, wherein the diameter ratio of the cylinder piston to the oil cylinder piston is 3.0-3.5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110488450.XA CN113187771A (en) | 2021-05-06 | 2021-05-06 | Gas-liquid isolated automatic oil-supplementing pressure cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110488450.XA CN113187771A (en) | 2021-05-06 | 2021-05-06 | Gas-liquid isolated automatic oil-supplementing pressure cylinder |
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| CN113187771A true CN113187771A (en) | 2021-07-30 |
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|---|---|---|---|
| CN202110488450.XA Pending CN113187771A (en) | 2021-05-06 | 2021-05-06 | Gas-liquid isolated automatic oil-supplementing pressure cylinder |
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| CN102424042A (en) * | 2011-09-28 | 2012-04-25 | 芜湖市安芜汽车制动元件有限公司 | Air booster pump structure |
| CN102673546A (en) * | 2012-05-16 | 2012-09-19 | 芜湖环球汽车配件有限公司 | Air booster pump |
| CN203702477U (en) * | 2013-12-27 | 2014-07-09 | 芜湖盛力科技股份有限公司 | Air booster pump of engineering mechanical braking system |
| CN203837760U (en) * | 2014-04-15 | 2014-09-17 | 杭州贝特燃气表有限公司 | Gas meter redundancy sealing transmission device |
| CN104477157A (en) * | 2014-12-20 | 2015-04-01 | 芜湖盛力科技股份有限公司 | Air-assisted hydraulic air booster pump for magnetically levitated train |
| CN205524223U (en) * | 2016-04-27 | 2016-08-31 | 吴金千 | Novel air pump for construction machinery |
| CN207830244U (en) * | 2018-01-30 | 2018-09-07 | 东莞市巨力气动液压设备有限公司 | A kind of oil gas isolated form pneumohydraulic pressure-cylinder |
| CN210033740U (en) * | 2019-05-24 | 2020-02-07 | 瑞立集团瑞安汽车零部件有限公司 | Air booster pump |
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