CN219262843U - Efficient tertiary pneumatic cylinder - Google Patents
Efficient tertiary pneumatic cylinder Download PDFInfo
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- CN219262843U CN219262843U CN202320142549.9U CN202320142549U CN219262843U CN 219262843 U CN219262843 U CN 219262843U CN 202320142549 U CN202320142549 U CN 202320142549U CN 219262843 U CN219262843 U CN 219262843U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The utility model discloses a high-efficiency three-stage air compressing oil cylinder, and relates to the technical field of oil cylinders. The two sides of the hydraulic cylinder are respectively provided with a left cylinder and a right cylinder, the end part of the left cylinder is provided with a left end cover, a left micro piston is arranged in the left end cover and the left cylinder body, a left reset spring is arranged between the left micro piston and the left end cover, a left gap is formed between the left micro piston and the bottom of the left cylinder, and a left sliding cavity is formed between the left micro piston and the left cylinder piston; the left cylinder piston is connected with a right cylinder piston in the right cylinder through a piston rod, a right end cover is arranged at the end part of the right cylinder, a right micro piston is arranged in the right end cover and the right cylinder body, a right reset spring is arranged between the right micro piston and the right end cover, a right gap is formed between the right micro piston and the cylinder bottom of the right cylinder, and a right sliding cavity is formed between the right micro piston and the right cylinder piston. The utility model simplifies the pipeline arrangement, eradicates the clearance, improves the working efficiency of the air compressing oil cylinder and has wide application prospect.
Description
Technical Field
The utility model relates to the technical field of oil cylinders, in particular to a high-efficiency three-stage air compressing oil cylinder.
Background
At present, a pneumatic cylinder adopted by the existing hydraulic piston type compressor does not run to the bottom of a cylinder every time according to the running working principle of the pneumatic cylinder, namely the compressed gas of the cylinder piston cannot be completely discharged every time, and a certain clearance exists.
The prior air compressing cylinder structure shown in fig. 1 consists of a left first-stage exhaust valve 1, a left cylinder 2, a left connecting body 3, a left second-stage intake valve 4, a hydraulic cylinder 5, a right second-stage intake valve 6, a right cylinder 7, a right first-stage exhaust valve 8, a right first-stage intake valve 9, a right cylinder piston 10, a right second-stage exhaust valve 11, a right connecting body 12, a cylinder piston 13, a piston rod 14, a left second-stage exhaust valve 15, a left cylinder piston 16 and a left first-stage intake valve 17, wherein an oil port A and an oil port B are control oil ports on the hydraulic cylinder 5. The left cylinder 2 and the hydraulic cylinder 5 are separated and sealed by the separation cavity between the cylinder and the left connecting body 3, and the right cylinder 12 and the hydraulic cylinder 5 are separated and sealed by the separation cavity between the right connecting body 12 and the cylinder. When hydraulic oil enters the left cavity of the hydraulic oil cylinder 5 from the oil port A, the right cavity of the hydraulic oil cylinder 5 returns oil from the oil port B, the oil cylinder piston 13 moves right under the pushing of the hydraulic oil, the rodless cavity of the left air cylinder 2 sucks air, the right air cylinder piston 10 connected through the piston rod 14 moves right correspondingly, the gas in the rodless cavity of the right air cylinder 7 is subjected to primary compression, and the compressed gas enters the rod cavity of the right air cylinder 7 through the right primary exhaust valve 8 and the right secondary air inlet valve 6; on the other hand, the left cylinder piston 16 moves to the right to compress the compressed gas in the rod cavity of the left cylinder 2 for two-stage compression, and then the compressed gas is discharged through the left two-stage exhaust valve 15, and meanwhile, the left cylinder piston 16 moves to the right to increase the volume of the rodless cavity of the left cylinder 2, and the gas enters the left cylinder 2 through the left one-stage intake valve 17.
When the oil cylinder piston 13 moves to the reversing position, the electric control equipment sends a reversing signal, and the hydraulic oil flows in the oil port A and the oil port B reversely. When hydraulic oil enters the right cavity of the hydraulic oil cylinder 5 from the oil port B, the left cavity of the hydraulic oil cylinder 5 returns oil from the oil port A, the oil cylinder piston 13 moves left under the pushing of the hydraulic oil, the left cylinder piston 16 is connected through the piston rod 14 to move left correspondingly, the gas in the rodless cavity of the left cylinder 2 is subjected to primary compression, and the compressed gas enters the rod cavity of the left cylinder 2 through the left primary exhaust valve 1 and the left secondary intake valve 4; on the other hand, the right cylinder piston 10 moves left to compress the compressed gas in the rod cavity of the right cylinder 7 for two-stage compression, and then the compressed gas is discharged through the right two-stage exhaust valve 11, and meanwhile, the right cylinder piston 10 moves left to increase the volume of the rod-free cavity of the right cylinder 7, and the gas enters the rod-free cavity of the right cylinder 7 for air suction through the right one-stage air inlet valve 9. And the gas is continuously compressed by reciprocating in this way.
The left cylinder piston 16 of the pneumatic cylinder moves in the left cylinder 2 at a position C and a position D (figure 2), the movement distance from the position C to the position D of the left cylinder piston 16 is S, and the distance from the position D to the end of the left cylinder 2 of the left cylinder piston 16 is H. When the left cylinder piston 16 moves to the set change direction B, the position signal is transmitted to the electronic control device, and the electronic control device sends a change instruction to the change mechanism, so that the change mechanism starts to act. Because the reversing mechanism is in the reversing process, the hydraulic pump is unloaded, the oil port A and the oil port B of the hydraulic oil cylinder 5 are communicated with the hydraulic oil tank, and the oil pressure acting on the oil cylinder piston 13 disappears. When the left cylinder piston 16 inertly moves to the position a, the reversing action of the reversing mechanism is completed, the pressure oil starts to be injected into the hydraulic cylinder, the left cylinder piston 16 is rapidly braked under the action of the pressure oil, the left cylinder piston 16 starts to reversely move from the position a, and the whole reversing process is finished. A. The displacement S between the two points B is the inertial stroke of the reversing process of the left cylinder piston 16, and the clearance is the distance H from the point A to the bottom of the left cylinder 2. Because of the existence of the clearance H, high-pressure gas exists in the accommodating cavity of the clearance H, after the compressed air is changed, the left cylinder piston 16 retreats, the volume of the high-pressure gas in the accommodating cavity of the clearance H expands outwards, at the moment, the compressed air cylinder is not sucked, and when the pressure of the gas in the cylinder is lower than the external pressure, the cylinder starts sucking. Therefore, due to the existence of the clearance, a large amount of gas exists in the cylinder, and the working efficiency of the pneumatic cylinder is greatly reduced.
In order to solve the problem that the working efficiency of the air compressing oil cylinder is low due to the clearance of the existing air compressing oil cylinder, it is especially necessary to design a novel efficient three-stage air compressing oil cylinder.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide the efficient three-stage air compressing oil cylinder which is reasonable in structural design, simplifies the pipeline arrangement, eradicates the clearance, improves the working efficiency of the air compressing oil cylinder, is high in practicability and is easy to popularize and use.
In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a high-efficient tertiary pneumatic cylinder, including the left end cover, left reset spring, left inlet port, left discharge valve, left inlet valve, left micro-motion piston, left sliding chamber, left clearance, right end cover, right reset spring, right inlet port, right discharge valve, right inlet valve, right micro-motion piston, right sliding chamber, right clearance, left cylinder, hydraulic cylinder, right cylinder, the piston rod, left cylinder piston and right cylinder piston, the both sides of hydraulic cylinder are provided with left cylinder, right cylinder respectively, the left end cover is installed to the tip of left cylinder, install left micro-motion piston in left end cover and the left cylinder body, install left reset spring between left micro-motion piston and the left end cover, be provided with left discharge valve on the left micro-motion piston, be provided with left inlet port in the jar of left cylinder, left inlet valve is installed to left inlet port department, be formed with left clearance between left micro-motion piston and the left cylinder bottom, be formed with left sliding chamber between left micro-motion piston and the left cylinder piston; the left cylinder piston is connected with a right cylinder piston in the right cylinder through a piston rod, a right end cover is arranged at the end part of the right cylinder, a right micro piston is arranged in the right end cover and the right cylinder body, a right return spring is arranged between the right micro piston and the right end cover, a right exhaust valve is arranged on the right micro piston, a right air inlet hole is arranged in the cylinder of the right cylinder, a right air inlet valve is arranged at the right air inlet hole, a right gap is formed between the right micro piston and the cylinder bottom of the right cylinder, and a right sliding cavity is formed between the right micro piston and the right cylinder piston.
Preferably, the left end cover is connected with the left cylinder through a stop buckle, and the right end cover is connected with the right cylinder through a stop buckle.
Preferably, the left micro piston and the right micro piston can slide relatively with the inner holes of the left end cover and the right end cover respectively, one ends of the left micro piston and the right micro piston are provided with round tables, and the left micro piston and the right micro piston are arranged in the inner holes of the left cylinder and the right cylinder in a sliding way and limited by using a baffle plate.
Preferably, blind holes are formed in the centers of the left micro piston and the right micro piston, the left reset spring and the right reset spring are installed in the corresponding blind holes, the left reset spring and the right reset spring are respectively pressed by the left end cover and the right end cover under the pre-pressure, and the left micro piston and the right micro piston are pressed by the pre-pressure of the reset spring.
The utility model has the beneficial effects that: the device adopts the micro-piston to realize the zero-clearance design, eradicates the clearance, solves the problem of low efficiency of the compressed air oil in a low air inlet pressure section through reasonable pressure ratio distribution, simplifies the pipeline arrangement, improves the working efficiency of the compressed air oil cylinder, and has wide application prospect.
Drawings
The utility model is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic diagram of a conventional pneumatic cylinder in the prior art;
FIG. 2 is a schematic illustration of the configuration of the cylinder clearance of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the present utility model;
fig. 4 is a schematic structural view of the present utility model.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
Referring to fig. 3-4, the present embodiment adopts the following technical scheme: the two sides of the hydraulic cylinder 5 are respectively provided with a left cylinder 2 and a right cylinder 7, a piston rod 14, a left cylinder piston 16 and a right cylinder piston 10, the end part of the left cylinder 2 is provided with the left end cover 18, the left end cover 18 is connected with the left cylinder 2 through a locking buckle, the left end cover 18 is internally provided with the left micro piston 23, the left return spring 19 is arranged between the left micro piston 23 and the left end cover 18, the left exhaust valve 21 is arranged on the left micro piston 23, the left cylinder 2 is internally provided with the left air inlet valve 20, the left air inlet valve 22 is arranged at the position of the left air inlet 20, the left gap 25 is formed between the left micro piston 23 and the bottom of the left cylinder 2, and the left micro piston 23 and the left cylinder 2 form a sliding cavity 24; the left cylinder piston 16 is connected with the right cylinder piston 10 in the right cylinder 7 through a piston rod 14, a right end cover 26 is installed at the end part of the right cylinder 7, the right end cover 26 is connected with the right cylinder 7 through a stop buckle, a right micro piston 31 is installed in the right end cover 26 and the right cylinder 7, a right return spring 27 is installed between the right micro piston 31 and the right end cover 26, a right exhaust valve 29 is arranged on the right micro piston 31, a right air inlet hole 28 is arranged in the cylinder of the right cylinder 7, a right air inlet valve 30 is installed at the right air inlet hole 28, a right gap 33 is formed between the right micro piston 31 and the cylinder bottom of the right cylinder 7, and a right sliding cavity 32 is formed between the right micro piston 31 and the right cylinder piston 10.
It is noted that the left micro piston 23 and the right micro piston 31 can slide relatively with the inner holes of the left end cover 18 and the right end cover 26 respectively, one ends of the left micro piston 23 and the right micro piston 31 are provided with round tables, and the left micro piston 23 and the right micro piston 31 are arranged in the inner holes of the left cylinder 2 and the right cylinder 7 respectively in a sliding way and limited by using a baffle plate.
In addition, blind holes are formed in the centers of the left micro piston 23 and the right micro piston 31, the left return spring 19 and the right return spring 27 are installed in the corresponding blind holes, the left return spring 19 and the right return spring 27 are respectively pressed by the left end cover 18 and the right end cover 26 under the pre-pressure, and the left micro piston 23 and the right micro piston 31 are pressed by the pre-pressure of the return springs.
The working principle of the specific embodiment is as follows: the piston rod 14 drives the left cylinder piston 16 to move leftwards in the left cylinder 2, and compresses gas in a rodless cavity of the left cylinder 2. The left cylinder piston 16 is contacted with the end face of the left micro piston 23, so that left instantaneous impact force is generated on the left micro piston 23, and buffer is formed by the left return spring 19 and the air cavity in the left end cover 18, so that the contact vibration of the left cylinder piston 16 and the end face of the left micro piston 23 is reduced. The high-pressure gas enters the gap between the right micro piston 31 and the bottom of the right cylinder 7 through the one-way valve, the left gap 25 is approximately equal to the high-pressure gas in the right sliding cavity 32, the left micro piston 23 continues to move leftwards, the compressed volume of the gas in the left sliding cavity 24 and the left cylinder cavity is gradually reduced, and the hydraulic cylinder finishes reversing.
The piston rod 14 drives the right cylinder piston 10 to move rightwards in the right cylinder 7, and at the moment of reversing, the piston rod 14 drives the left cylinder piston 16 to be free from hydraulic pressure in the left cylinder 2, and the left cylinder piston 16 is subjected to high-pressure gas in a left micro-motion piston 23 and a left gap 25 between the bottom of the cylinder and the thrust of the left return spring 19 rightwards. The left micro piston 23 continues to move rightwards, when the end face of the left micro piston 23 is attached to the cylinder bottom, the left micro piston 23 is limited to move rightwards, at the moment, the left air inlet valve 22 is opened, and the piston rod 14 drives the right cylinder piston 10 to move rightwards in the cylinder, so that the suction of the cylinder without a rod cavity is realized.
The concrete implementation mode is formed by three stages, a cooling flow passage is arranged outside the air compressing cylinder body and is provided with a water jacket, so that the cooling area of the air compressing cylinder is greatly increased, the cooling efficiency is improved, the compression of gas is more similar to constant-temperature compression, the energy consumption is reduced, the gas compression efficiency is improved, meanwhile, a special isolation cavity is arranged in the three stages of air compressing cylinder to completely isolate the gas from the hydraulic cylinder, a gas radiator is arranged between each stage, the compression temperature of the gas is greatly reduced,
the micro-motion piston design structure is adopted in the specific embodiment, the clearance-free design is achieved, the clearance is thoroughly eradicated, meanwhile, reasonable pressure ratio distribution is adopted, the effect of reasonable pressure ratio is achieved through combination of different cylinder diameters and rod diameters, the problem that the efficiency of compressed air oil in a low air inlet pressure section is low is solved, the device is arranged through a reasonable compressed air cylinder body, the air suction efficiency of the compressed air cylinder is improved on the premise that the compressed air function is met, the pipeline arrangement is simplified, the application range of the hydraulic compressed air cylinder is widened, and the micro-motion piston type hydraulic compression device can be applied to the field of compressed air such as CNG and H2 and has wide market application prospects.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a high-efficient tertiary pneumatic cylinder, a serial communication port, including left end cover (18), left reset spring (19), left inlet port (20), left discharge valve (21), left intake valve (22), left micro-motion piston (23), left sliding chamber (24), left clearance (25), right side end cover (26), right reset spring (27), right inlet port (28), right discharge valve (29), right intake valve (30), right micro-motion piston (31), right sliding chamber (32), right clearance (33), left cylinder (2), hydraulic cylinder (5), right cylinder (7), piston rod (14), left cylinder piston (16) and right cylinder piston (10), the both sides of hydraulic cylinder (5) are provided with left cylinder (2), right cylinder (7) respectively, left end cover (18) are installed to the tip of left cylinder (2), install left micro-motion piston (23) in left end cover (18) and the left cylinder (2), install left reset spring (19) between left micro-motion piston (23) and the left end cover (18), be provided with left discharge valve (21) on left micro-motion piston (23), be provided with left inlet port (20) in left cylinder (2), a left gap (25) is formed between the left micro piston (23) and the cylinder bottom of the left cylinder (2), and a left sliding cavity (24) is formed between the left micro piston (23) and the left cylinder piston (16); the left cylinder piston (16) is connected with a right cylinder piston (10) in a right cylinder (7) through a piston rod (14), a right end cover (26) is arranged at the end part of the right cylinder (7), a right micro piston (31) is arranged in the right end cover (26) and the right cylinder (7), a right return spring (27) is arranged between the right micro piston (31) and the right end cover (26), a right exhaust valve (29) is arranged on the right micro piston (31), a right air inlet hole (28) is arranged in the cylinder of the right cylinder (7), a right air inlet valve (30) is arranged at the right air inlet hole (28), a right gap (33) is formed between the right micro piston (31) and the cylinder bottom of the right cylinder (7), and a right sliding cavity (32) is formed between the right micro piston (31) and the right cylinder piston (10).
2. The efficient three-stage pneumatic cylinder as claimed in claim 1, wherein the left end cover (18) is connected with the left cylinder (2) through a stop buckle, and the right end cover (26) is connected with the right cylinder (7) through a stop buckle.
3. The efficient three-stage air cylinder according to claim 1, wherein one end of the left micro piston (23) and one end of the right micro piston (31) are respectively provided with a round table, and the left micro piston (23) and the right micro piston (31) are respectively arranged in the inner holes of the left cylinder (2) and the right cylinder (7) in a sliding manner.
4. The efficient three-stage air cylinder according to claim 1, wherein blind holes are formed in the centers of the left micro piston (23) and the right micro piston (31), and the left return spring (19) and the right return spring (27) are installed in the corresponding blind holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320142549.9U CN219262843U (en) | 2023-01-20 | 2023-01-20 | Efficient tertiary pneumatic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320142549.9U CN219262843U (en) | 2023-01-20 | 2023-01-20 | Efficient tertiary pneumatic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219262843U true CN219262843U (en) | 2023-06-27 |
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ID=86866139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320142549.9U Active CN219262843U (en) | 2023-01-20 | 2023-01-20 | Efficient tertiary pneumatic cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN219262843U (en) |
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2023
- 2023-01-20 CN CN202320142549.9U patent/CN219262843U/en active Active
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