CN220227357U - Pneumatic booster cylinder - Google Patents
Pneumatic booster cylinder Download PDFInfo
- Publication number
- CN220227357U CN220227357U CN202321480954.8U CN202321480954U CN220227357U CN 220227357 U CN220227357 U CN 220227357U CN 202321480954 U CN202321480954 U CN 202321480954U CN 220227357 U CN220227357 U CN 220227357U
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- cylinder
- end cover
- piston
- oil
- oil cylinder
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- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 5
- 230000030279 gene silencing Effects 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 72
- 230000003584 silencer Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The utility model discloses a pneumatic booster cylinder which comprises a cylinder and a cylinder arranged above the cylinder, wherein the cylinder comprises a cylinder lower end cover, a cylinder upper end cover, a cylinder body, a piston and a piston rod, the piston rod stretches into the cylinder when the piston moves upwards, the cylinder comprises a cylinder body, a cylinder piston and a cylinder end cover, and two sealing assemblies are arranged between the cylinder upper end cover and the piston rod. The utility model adopts the starting control valve embedded in the lower end cover of the air cylinder, thereby avoiding the problem that the side surface of the device occupies the external space, reducing the space occupation ratio of the whole body as much as possible, and adapting to the installation of the starting booster pump with small space. In addition, two sealing assemblies are arranged between the upper end cover of the cylinder and the piston rod along the axial direction of the piston rod, so that the problem that gas in the cylinder is extruded into the cylinder under a high pressure state is solved by utilizing the two sealing assemblies, and the risk that hydraulic oil in the cylinder is emulsified is reduced.
Description
Technical Field
The utility model relates to a pneumatic booster cylinder, in particular to a pneumatic booster cylinder which is compact in structure, does not mutually move gas and liquid and is reliable in operation.
Background
At present, most of hydraulic systems used in industry use electric energy as a power source, hydraulic oil with required pressure and flow is output by a motor driving a hydraulic pump body, the hydraulic pump has to always operate to output larger flow to achieve the purpose of pressure maintaining, and the excessive flow flows back to an oil tank through an overflow valve and a cooling device; in practical application, the execution structure is in a state of no energy consumption for most of the time, or in a static pressure maintaining state, no high-pressure oil is needed to generate flow, so that the energy consumption of the whole hydraulic system is very large, the consumed energy mainly enters hydraulic oil, the hydraulic oil is heated, the temperature of the hydraulic oil is increased, a cooling device is increased, the tightness of an integral oil way is damaged, and the service life of equipment is greatly reduced.
Chinese patent CN 218266309U discloses and a pneumatic energy-saving booster oil pump, comprising a cylinder body, a cylinder end cover, a cylinder piston, a piston rod, a first check valve, a second check valve, a pneumatic control valve, a reversing control valve and a pump body connecting seat; the cylinder body is connected with the oil cylinder body through a pump body connecting seat, a piston rod is arranged in the pump body connecting seat, one end of the piston rod is arranged in the cylinder body and connected with the cylinder piston, and the other end of the piston rod is arranged in the oil cylinder body and sequentially connected with a first one-way valve and the oil cylinder piston; the cylinder end cover is connected to the cylinder body; the oil cylinder end cover is connected to the oil cylinder body, and the second one-way control valve is arranged on the oil cylinder end cover; the pump body connecting seat is provided with an oil delivery hole communicated with a rod cavity of the oil cylinder; the piston reversing control valve is arranged in the cylinder end cover, and the pneumatic control valve is arranged outside the cylinder body. The sealing condition between the cylinder and the piston rod connected with the cylinder and the pump body connecting seat of the device can lead the gas in the cylinder to permeate into the cylinder due to the high-frequency reciprocating motion of the piston rod, thereby leading the hydraulic oil in the cylinder to be emulsified and influencing the working stability and the working precision of the cylinder.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a pneumatic booster cylinder which has the characteristics of compact structure, no mutual movement of gas and liquid and reliable operation.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a pneumatic booster cylinder has the innovation points that: the pneumatic booster cylinder comprises a cylinder and an oil cylinder arranged above the cylinder, the cylinder comprises a cylinder lower end cover, a cylinder upper end cover, a cylinder body arranged between the cylinder lower end cover and the cylinder upper end cover, a piston arranged in the cylinder body and positioned between the cylinder lower end cover and the cylinder upper end cover, and a piston rod arranged on one side of the piston close to the cylinder, wherein the piston rod stretches into the cylinder when the piston moves upwards, a cylinder rod cavity is arranged between the cylinder upper end cover and the piston, a cylinder rod-free cavity is arranged between the cylinder lower end cover and the piston, a reversing control valve and a pneumatic control valve which is communicated with the reversing control valve are arranged in the cylinder lower end cover, an air outlet which is connected with the pneumatic control valve is arranged on the cylinder lower end cover, and a hollow pipe which is communicated with the cylinder rod cavity and the cylinder rod-free cavity is arranged between the cylinder upper end cover and the cylinder lower end cover;
the oil cylinder comprises an oil cylinder body, an oil cylinder piston arranged in the oil cylinder body and an oil cylinder end cover arranged above the oil cylinder body, wherein the oil cylinder piston is positioned in an oil cylinder cavity formed by the oil cylinder end cover, the oil cylinder body and the oil cylinder upper end cover, the oil cylinder piston is arranged on the end part of a piston rod on the air cylinder, an oil cylinder rodless cavity is arranged between the oil cylinder end cover and the oil cylinder piston, an air cylinder rod cavity is arranged between the piston and the oil cylinder upper end cover, a first one-way valve which is communicated with the outside and the oil cylinder rodless cavity is arranged on the oil cylinder end cover, and a second one-way valve which is communicated with the oil cylinder rodless cavity and the oil cylinder rod cavity is arranged on the oil cylinder piston;
two kinds of seal assemblies are arranged between the upper end cover of the cylinder and the piston rod along the axial direction of the piston rod, the seal assembly comprises an upper oil seal and a lower oil seal, and the seal assembly is positioned between the upper oil seal and the lower oil seal.
Preferably, the upper oil seal and the lower oil seal are sealing elements, and the sealing component is one of a sealing ring or a stoneley seal.
Preferably, the cross section of the sealing assembly is rectangular or circular when the sealing assembly is a sealing ring.
Preferably, when the sealing component is a stoneley seal, the sealing component comprises a first component and a second component, wherein the first component is arranged on the outer side and has a circular cross section, and the second component is arranged on the inner side of the first component and has a rectangular cross section.
Preferably, the cylinder piston is provided with 3 second check valves which are communicated with the rodless cavity of the cylinder and the rod cavity of the cylinder, and the 3 second check valves are uniformly distributed in the circumferential direction.
Preferably, a dust cover covering the exhaust port is arranged at the position of the exhaust port on the lower end cover of the cylinder.
Preferably, a silencing device for covering the air outlet is arranged at the position of the air outlet on the lower end cover of the air cylinder.
The utility model has the advantages that: compared with the existing structure, the starting control valve is embedded in the lower end cover of the air cylinder, so that the problem that the side surface of the existing external device occupies an external space is avoided, the occupied space of the whole body is reduced as much as possible, and the starting control valve is suitable for installation of a small-space starting booster pump. In addition, two sealing assemblies are arranged between the upper end cover of the cylinder and the piston rod along the axial direction of the piston rod, so that the problem that gas in the cylinder is extruded into the cylinder under a high pressure state is solved by utilizing the two sealing assemblies, and the risk that hydraulic oil in the cylinder is emulsified is reduced.
Drawings
The utility model is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 is a perspective view of a pneumatic booster cylinder of the present utility model.
Fig. 2 is an exploded perspective view of a pneumatic booster cylinder of the present utility model.
Fig. 3 is an exploded perspective view of a cylinder portion of a pneumatic booster cylinder of the present utility model.
Fig. 4 is an exploded perspective view of a cylinder portion of a pneumatic booster cylinder of the present utility model.
Fig. 5 is a front view of a pneumatic booster cylinder of the present utility model.
Fig. 6 is a front view of a cylinder portion of a pneumatic booster cylinder of the present utility model.
Fig. 7 is a schematic structural view of a pneumatic control valve and a reversing control valve portion in a pneumatic booster cylinder according to the present utility model.
Fig. 8 is a front view of a cylinder portion of a pneumatic booster cylinder of the present utility model.
Fig. 9 is a left side view of a pneumatic booster cylinder of the present utility model.
FIG. 10 is a schematic view of the structure of the pneumatic booster cylinder of the present utility model with its cut surface passing through the pneumatic control valve.
FIG. 11 is a schematic cross-sectional view of a pneumatic booster cylinder of the present utility model with a seal assembly in the form of a Style seal.
In the figure: 1-cylinder, 11-cylinder lower end cover, 12-cylinder upper end cover, 13-cylinder body, 14-piston, 15-piston rod, 16-cylinder rod cavity, 17-cylinder rod-free cavity, 2-cylinder, 21-cylinder body, 22-cylinder piston, 23-cylinder end cover, 24-cylinder rod-free cavity, 25-cylinder rod cavity, 26-first check valve, 27-second check valve, 3-reversing control valve, 31-exhaust port, 4-pneumatic control valve, 41-air inlet, 42-air outlet, 5-hollow tube, 6-upper oil seal, 7-lower oil seal, 8-sealing component, 81-first component, 82-second component, 9-dust cover and 10-silencing device.
Detailed Description
The pneumatic booster cylinder comprises a cylinder 1 and a cylinder 2 arranged above the cylinder 1, wherein the cylinder 1 comprises a cylinder lower end cover 11, a cylinder upper end cover 12, a cylinder body 13 arranged between the cylinder lower end cover 11 and the cylinder upper end cover 12, a piston 14 positioned in the cylinder body 13 and positioned between the cylinder lower end cover 11 and the cylinder upper end cover 12, a piston rod 15 arranged on one side of the piston 14 close to the cylinder 2, the piston rod 15 stretches into the cylinder 2 when the piston 14 moves upwards, a cylinder rod cavity 16 is arranged between the cylinder upper end cover 12 and the piston 14, a cylinder rod-free cavity 17 is arranged between the cylinder lower end cover 11 and the piston 14, a reversing control valve 3 and a pneumatic control valve 4 communicated with the reversing control valve 3 are arranged in the cylinder lower end cover 11, an air inlet 41 and an air outlet 42 connected with the pneumatic control valve 4 are arranged on the cylinder lower end cover 11, and a hollow pipe 5 communicated with the cylinder rod cavity 16 and the cylinder rod-free cavity 17 is arranged between the cylinder upper end cover 12 and the cylinder lower end cover 11.
The oil cylinder 2 comprises an oil cylinder body 21, an oil cylinder piston 22 arranged in the oil cylinder body 21, and an oil cylinder end cover 23 arranged above the oil cylinder body 21, wherein the oil cylinder piston 22 is positioned in a cavity of the oil cylinder 2 formed by the oil cylinder end cover 23, the oil cylinder body 21 and an oil cylinder upper end cover 12, the oil cylinder piston 22 is arranged on the end part of a piston rod 15 on the air cylinder 1, an oil cylinder rodless cavity 24 is arranged between the oil cylinder end cover 23 and the oil cylinder piston 22, an oil cylinder rod cavity 25 is arranged between the piston 14 and the oil cylinder upper end cover 12, a first one-way valve 26 which is communicated with the outside and the oil cylinder rod cavity 24 is arranged on the oil cylinder end cover 23, and a second one-way valve 27 which is communicated with the oil cylinder rod cavity 24 and the oil cylinder rod cavity 25 is arranged on the oil cylinder piston 22.
Two kinds of seal assemblies are arranged between the upper end cover 12 of the cylinder and the piston rod 15 along the axial direction of the piston rod 15, and comprise an oil seal assembly and a seal assembly, wherein the oil seal assembly comprises an upper oil seal 6 and a lower oil seal 7, and the seal assembly 8 is positioned between the upper oil seal 6 and the lower oil seal 7.
The utility model adopts the starting control valve embedded in the lower end cover 11 of the air cylinder, thereby avoiding the problem that the side surface of the device occupies the external space, reducing the space occupation ratio of the whole body as much as possible, and adapting to the installation of the starting booster pump with small space. In addition, two sealing assemblies are arranged between the upper end cover 12 of the cylinder and the piston rod 15 along the axial direction of the piston rod 15, and the problem that the gas in the cylinder 1 is extruded into the cylinder 2 in a high-pressure state is well prevented by utilizing the two sealing assemblies, so that the risk of emulsification of hydraulic oil in the cylinder 2 is reduced.
In order to achieve a good sealing effect, the upper oil seal 6 and the lower oil seal 7 are sealing elements, and the sealing component is one of a sealing ring or a Style seal. When the sealing component is a sealing ring, the section is rectangular or circular; when the seal member 8 is a stirling seal, it includes a first member 81 having a circular cross section and disposed outside, and a second member 82 having a rectangular cross section and disposed inside the first member 81.
In order to increase the hydraulic oil flow area while ensuring the strength of the cylinder piston, the cylinder piston 22 is provided with 3 second check valves 27,3 which are communicated with the cylinder rodless chamber 17 and the cylinder rod chamber 16 and are uniformly distributed in the circumferential direction.
In order to prevent dust from entering the exhaust port, a dust cap 9 covering the exhaust port 31 is provided at the position of the exhaust port 31 on the cylinder lower cover 11. In order to reduce noise caused by disturbance gas when the control valve is started, a silencer 10 covering the air outlet is arranged at the position of the air outlet 42 on the lower end cover 11 of the air cylinder, and the silencer is conventional silencer equipment and is not repeated here.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the inventors regard such subject matter as not be considered to be part of the disclosed subject matter.
Claims (7)
1. The utility model provides a pneumatic booster cylinder which characterized in that: the pneumatic booster cylinder comprises a cylinder and an oil cylinder arranged above the cylinder, the cylinder comprises a cylinder lower end cover, a cylinder upper end cover, a cylinder body arranged between the cylinder lower end cover and the cylinder upper end cover, a piston arranged in the cylinder body and positioned between the cylinder lower end cover and the cylinder upper end cover, and a piston rod arranged on one side of the piston close to the cylinder, wherein the piston rod stretches into the cylinder when the piston moves upwards, a cylinder rod cavity is arranged between the cylinder upper end cover and the piston, a cylinder rod-free cavity is arranged between the cylinder lower end cover and the piston, a reversing control valve and a pneumatic control valve which is communicated with the reversing control valve are arranged in the cylinder lower end cover, an air outlet which is connected with the pneumatic control valve is arranged on the cylinder lower end cover, and a hollow pipe which is communicated with the cylinder rod cavity and the cylinder rod-free cavity is arranged between the cylinder upper end cover and the cylinder lower end cover;
the oil cylinder comprises an oil cylinder body, an oil cylinder piston arranged in the oil cylinder body and an oil cylinder end cover arranged above the oil cylinder body, wherein the oil cylinder piston is positioned in an oil cylinder cavity formed by the oil cylinder end cover, the oil cylinder body and the oil cylinder upper end cover, the oil cylinder piston is arranged on the end part of a piston rod on the air cylinder, an oil cylinder rodless cavity is arranged between the oil cylinder end cover and the oil cylinder piston, an oil cylinder rod cavity is arranged between the piston and the oil cylinder upper end cover, a first one-way valve which is communicated with the outside and the oil cylinder rodless cavity is arranged on the oil cylinder end cover, and a second one-way valve which is communicated with the oil cylinder rodless cavity and the oil cylinder rod cavity is arranged on the oil cylinder piston;
two kinds of seal assemblies are arranged between the upper end cover of the cylinder and the piston rod along the axial direction of the piston rod, the seal assembly comprises an upper oil seal and a lower oil seal, and the seal assembly is positioned between the upper oil seal and the lower oil seal.
2. A pneumatic booster cylinder as defined in claim 1, wherein: the upper oil seal and the lower oil seal are sealing elements, and the sealing component is one of a sealing ring or a Style seal.
3. A pneumatic booster cylinder as defined in claim 2, wherein: the section is rectangular or circular when the sealing component is a sealing ring.
4. A pneumatic booster cylinder as defined in claim 2, wherein: when the sealing component is a Style seal, the sealing component comprises a first component and a second component, wherein the first component is arranged on the outer side, the cross section of the first component is circular, and the second component is arranged on the inner side of the first component, and the cross section of the second component is rectangular.
5. A pneumatic booster cylinder as defined in claim 1, wherein: the cylinder piston is provided with 3 second check valves which are communicated with the rodless cavity of the cylinder and the rod cavity of the cylinder, and the 3 second check valves are uniformly distributed in the circumferential direction.
6. A pneumatic booster cylinder as defined in claim 1, wherein: and a dust cover for covering the exhaust port is arranged at the position of the exhaust port on the lower end cover of the cylinder.
7. A pneumatic booster cylinder as defined in claim 1, wherein: and a silencing device for covering the air outlet is arranged at the position of the air outlet on the lower end cover of the air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321480954.8U CN220227357U (en) | 2023-06-12 | 2023-06-12 | Pneumatic booster cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321480954.8U CN220227357U (en) | 2023-06-12 | 2023-06-12 | Pneumatic booster cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227357U true CN220227357U (en) | 2023-12-22 |
Family
ID=89199107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321480954.8U Active CN220227357U (en) | 2023-06-12 | 2023-06-12 | Pneumatic booster cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227357U (en) |
-
2023
- 2023-06-12 CN CN202321480954.8U patent/CN220227357U/en active Active
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