Ionic liquid seal compression air cylinder with liquid drive buffer structure

Abstract

The utility model relates to the technical field of ionic liquid cylinders, in particular to an ionic liquid seal compression cylinder with a hydraulic drive buffer structure. Comprising a cylinder sleeve, a cylinder head is arranged at the top of the cylinder sleeve, an air inlet one-way valve and an exhaust one-way valve are arranged in the cylinder head, an air piston is movably arranged in the cylinder sleeve, an ionic liquid storage cavity is formed between the side wall of the air piston and the side wall of the cylinder sleeve, and a liquid scraping assembly is installed on the side wall of the air piston on the upper side of the ionic liquid storage cavity; an oil piston is movably arranged in the oil cylinder, hydraulic oil inlets and outlets are formed in the top and the bottom of the side wall of the oil cylinder, a vertically-through communicating hole is formed in the oil piston, and a buffer rod matched with the communicating hole in shape is movably arranged in the communicating hole. A double-sealing structure is formed, and gas is prevented from leaking between the gas piston and the cylinder sleeve; hydraulic driving of the air piston is achieved, stability is good, the buffer rod can open the communicating hole when the oil piston moves to the lower dead center or the upper dead center of the oil cylinder, hydraulic oil enters the oil cylinder in advance to achieve the buffer effect, and the oil piston and the oil cylinder are protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to ion liquid cylinder technical field especially, it relates to a kind of ion liquid seal compression cylinder with liquid drive buffer structure. BACKGROUND

[0002] At present, ion liquid seal compression cylinder is the new-type equipment for the gas pressurization, its structure is as patent application with the publication number CN116044712A, discloses a kind of ion liquid compressor, by injecting ion liquid in the compression cavity of cylinder, realize the cooling lubrication of piston and the sealing effect of promotion between piston and cylinder.But, the ion liquid cylinder of this form in the prior art, first, the ion liquid in the compression cavity is just covered in the top of piston, in actual working process, due to the unstable working environment of ion liquid cylinder, vibration or shaking situation is inevitable, cause the ion liquid in the top of piston to shake, cannot guarantee that ion liquid is sealed between piston and cylinder liner all the time, there is no ion liquid sealing position then there will be sealing failure, sealing failure will lead to gas leakage from between piston and cylinder liner;Second, part of ion liquid will also be attached to cylinder liner inner wall, leak with the reciprocating motion of piston;Third, the driving form of piston uses crankshaft connecting rod structure, stability is poor, will affect the operation accuracy of piston;Fourth, if using liquid drive structure to drive piston, oil piston in liquid drive structure is prone to collision with oil cylinder in reciprocating process, time is long and prone to affect the service life of oil piston and oil cylinder, there is no good solution to the above problems at present.

[0003] In summary, the above problems in ion liquid seal compression cylinder have become a technical problem that needs to be solved in the industry. UTILITY MODEL CONTENTS

[0004] The utility model discloses to make up for the deficiency of prior art, provide a kind of ion liquid seal compression cylinder with liquid drive buffer structure, solve the sealing failure problem caused by shaking in the ion liquid cylinder of the past, solve the problem that part of ion liquid in the ion liquid cylinder of the past is attached to cylinder liner inner wall and leak, solve the problem that the driving structure stability of the past piston is poor, affect the operation accuracy of piston, solve the problem that oil piston is prone to collision with oil cylinder in reciprocating process, affect service life.

[0005] The utility model discloses to make up for the deficiency of prior art, provide a kind of ion liquid seal compression cylinder with liquid drive buffer structure, solve the sealing failure problem caused by shaking in the ion liquid cylinder of the past, solve the problem that part of ion liquid in the ion liquid cylinder of the past is attached to cylinder liner inner wall and leak, solve the problem that the driving structure stability of the past piston is poor, affect the operation accuracy of piston, solve the problem that oil piston is prone to collision with oil cylinder in reciprocating process, affect service life.

[0006] The utility model provides an ion liquid sealed compression cylinder with liquid drive buffer structure, including cylinder sleeve, the top of cylinder sleeve is equipped with cylinder head, is equipped with air inlet check valve and exhaust check valve in cylinder head, cylinder sleeve is equipped with gas piston, and the gas piston is between cylinder head, and the top of gas piston is covered with ion liquid, and the side wall of gas piston is equipped with ion liquid storage cavity with the side wall of cylinder sleeve, and the ion liquid storage cavity is connected with the ion liquid of the top of gas piston through the ion liquid channel in the gas piston, and the ion liquid is used for cooling, lubricating and sealing between gas piston and cylinder sleeve, and the side wall of gas piston on the upside of ion liquid storage cavity is installed with liquid scraping subassembly, and the bottom of cylinder sleeve is installed oil cylinder, and oil cylinder is equipped with oil piston, and oil piston is connected with gas piston through piston rod, and the top and bottom of oil cylinder side wall are equipped with hydraulic oil inlet and outlet, and oil piston is equipped with the through hole of up and down, and the both ends of through hole are set up with the necked part, and the buffer rod of shape cooperation is movably arranged in the through hole, and the gap is formed between the outer wall of buffer rod and the inner wall of through hole.

[0007] The liquid scraping subassembly includes a liquid scraping plate configured to scrape the ion liquid adhered to the inner wall of the cylinder sleeve into the ion liquid storage cavity.

[0008] The top of the liquid scraping plate is fixedly connected to the top of the gas piston by a fixing ring.

[0009] The edge of the liquid scraping plate is in sliding contact with the inner wall of the cylinder sleeve.

[0010] The liquid scraping subassembly includes a double guide ring structure configured to guide the reciprocating movement of the gas piston and scrape the ion liquid adhered to the inner wall of the cylinder sleeve into the ion liquid storage cavity.

[0011] The double guide ring structure includes two guide rings mounted on the side wall of the gas piston.

[0012] The outer side of the guide ring is in sliding contact with the inner wall of the cylinder sleeve.

[0013] The gas piston on the lower side of the ion liquid storage cavity is provided between the cylinder sleeve with a plurality of sealing rings and guide rings.

[0014] The oil piston is provided between the oil cylinder with a plurality of sealing rings and guide rings.

[0015] The two ends of the buffer rod are shaped to match the necked shape of the two ends of the through hole to block the necked part, and the side wall of the buffer rod is provided with a flat surface forming a gap with the inner wall of the through hole.

[0016] The utility model has the following advantages:

[0017] An ionic liquid storage chamber is provided between the side wall of the piston and the side wall of the cylinder liner. This chamber is connected to the ionic liquid at the top of the piston via an ionic liquid channel within the piston, forming a double-sealed structure. Even if the ionic liquid at the top of the piston cannot maintain a constant seal between the piston and cylinder liner due to movement, the ionic liquid in the storage chamber ensures a consistent seal, preventing leaks and avoiding sealing failure. Simultaneously, a scraper or double guide ring structure on the upper side of the storage chamber scrapes ionic liquid adhering to the inner wall of the cylinder liner into the storage chamber, preventing further leakage. The ionic liquid adhering to the inner wall of the cylinder liner leaks as the piston reciprocates. Additionally, hydraulic oil enters and exits the cylinder through the hydraulic oil inlet and outlet, driving the oil piston up and down. The oil piston, via the piston rod, drives the air piston to reciprocate within the cylinder liner, achieving hydraulic drive of the air piston. This provides good stability and ensures the air piston's operational accuracy. A buffer rod, movably installed in the connecting hole of the oil piston, opens the connecting hole when the oil piston reaches the bottom or top dead center of the cylinder, allowing hydraulic oil to enter in advance between the oil piston and the bottom or top of the cylinder, providing a buffer and preventing hard collisions between the oil piston and the bottom or top of the cylinder. This protects the oil piston and cylinder, extending their service life. Attached image description:

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the gas piston.

[0020] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the buffer rod of this utility model.

[0022] In the diagram, 1. Cylinder liner, 2. Cylinder head, 3. Intake check valve, 4. Exhaust check valve, 5. Piston, 6. Ionic liquid, 7. Ionic liquid storage chamber, 8. Ionic liquid channel, 9. Scraper, 10. Fixed ring, 11. Sealing ring, 12. Guide ring, 13. Oil cylinder, 14. Oil piston, 15. Piston rod, 16. Hydraulic oil inlet and outlet, 17. Double guide ring structure, 18. Buffer rod, 19. Plane. Detailed implementation method:

[0023] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0024] Example 1:

[0025] likeFigure 1 , 2 As shown in Figure 4, an ion-liquid sealed compression cylinder with a liquid-driven buffer structure includes a cylinder liner 1. A cylinder head 2 is located at the top of the cylinder liner 1. An inlet check valve 3 and an exhaust check valve 4 are located inside the cylinder head 2. A piston 5 is movably mounted inside the cylinder liner 1. A gas compression chamber is formed between the piston 5 and the cylinder head 2. The top of the piston 5 is covered with an ion-liquid 6. An ion-liquid storage chamber 7 is located between the side wall of the piston 5 and the side wall of the cylinder liner 1. The ion-liquid storage chamber 7 is connected to the ion-liquid 6 at the top of the piston 5 via an ion-liquid channel 8 within the piston 5. The ion-liquid is used to circulate the gas. Cooling, lubrication and sealing are performed between the plug 5 and the cylinder liner 1. A scraping assembly is installed on the side wall of the gas piston on the upper side of the ion liquid storage chamber. A hydraulic cylinder 13 is installed at the bottom of the cylinder liner 1. An oil piston 14 is movably installed in the hydraulic cylinder 13. The oil piston 14 is connected to the gas piston 5 through the piston rod 15. The top and bottom of the side wall of the hydraulic cylinder 13 are provided with hydraulic oil inlet and outlet 16. The oil piston 14 is provided with a through hole running vertically. The two ends of the through hole are narrowed. A buffer rod 18 with a matching shape is movably installed in the through hole. There is a gap between the outer wall of the buffer rod 18 and the inner wall of the through hole.

[0026] The scraping assembly includes a scraper 9, which is used to scrape the ionic liquid adhering to the inner wall of the cylinder liner 1 into the ionic liquid storage chamber 7.

[0027] The top of the scraper blade 9 is pressed and fixed by a retaining ring 10 for easy installation. The retaining ring 10 is fixedly connected to the top of the air piston 5 by several screws.

[0028] The edge of the scraper 9 slides in contact with the inner wall of the cylinder liner 1, which helps to cleanly scrape away the ionic liquid adhering to the inner wall of the cylinder liner 1.

[0029] Several sealing rings 11 and guide rings 12 are provided between the gas piston 5 and the cylinder liner 1 on the lower side of the ionic liquid storage chamber 7, which serve to seal and guide.

[0030] The oil piston 14 and the oil cylinder 13 are provided with a number of sealing rings 11 and guide rings 12, which serve to seal and guide.

[0031] The shapes of the two ends of the buffer rod 18 are matched with the shapes of the constricted ends of the connecting hole to seal the constricted ends. The side wall of the buffer rod 18 is provided with a flat surface 19, which forms a gap with the inner wall of the connecting hole. To facilitate the installation of the buffer rod 18, the oil piston 14 is assembled from two parts. The bottom of the oil piston 14 is provided with a bottom cover. After the buffer rod 18 is inserted into the connecting hole, the bottom cover is then fixedly connected to the oil piston 14 with bolts.

[0032] Example 2:

[0033] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that:

[0034] The liquid scraping assembly comprises a double guide ring structure 17 for guiding the reciprocating movement of the air piston 5 and scraping the ionic liquid adhered to the inner wall of the cylinder sleeve 1 into the ionic liquid storage cavity 7.

[0035] The double guide ring structure 17 comprises two guide rings mounted on the side wall of the air piston 5.

[0036] The outer side of the guide ring is in sliding contact with the inner wall of the cylinder sleeve 1, which not only guides the reciprocating movement of the air piston 5, but also facilitates the scraping of the ionic liquid adhered to the inner wall of the cylinder sleeve 1.

[0037] Working principle:

[0038] In operation, hydraulic oil enters and exits the oil cylinder 13 through the hydraulic oil inlet and outlet 16, which drives the oil piston 14 to move up and down. When the oil piston 14 moves to the lower dead point, the buffer rod 18 first contacts the bottom of the oil cylinder, the buffer rod 18 is pushed open upward, the communication hole is opened, and at this time the hydraulic oil above the oil piston 14 will enter between the oil piston 14 and the bottom of the oil cylinder through the communication hole, which plays a buffering role and avoids hard collision between the oil piston 14 and the bottom of the oil cylinder. Similarly, when the oil piston 14 moves to the upper dead point, the buffer rod 18 first contacts the top of the oil cylinder, the buffer rod 18 is pushed open downward, the communication hole is opened, and at this time the hydraulic oil below the oil piston 14 will enter between the oil piston 14 and the top of the oil cylinder through the communication hole, which plays a buffering role and avoids hard collision between the oil piston 14 and the top of the oil cylinder. The oil piston 14 drives the air piston 5 to reciprocate in the cylinder sleeve 1 through the piston rod 15. When the air piston 5 moves downward, the gas enters the gas compression cavity through the gas inlet one-way valve 3. When the air piston 5 moves upward, the gas in the gas compression cavity is compressed and pressurized, and then discharged outward through the gas outlet one-way valve 4, thereby realizing the pressurization of the gas. During the pressurization of the gas in the gas compression cavity, in addition to the sealing of the multiple sealing rings 11 between the air piston 5 and the cylinder sleeve 1, on the one hand, the top of the air piston 5 is covered with ionic liquid 6, and on the other hand, the ionic liquid storage cavity 7 also stores ionic liquid 6, forming a double sealing structure. Even if the ionic liquid on the top of the air piston 5 cannot guarantee sealing between the air piston 5 and the cylinder sleeve 1 due to shaking, the ionic liquid in the ionic liquid storage cavity 7 can always seal between the air piston 5 and the cylinder sleeve 1, and the two cooperate to ensure the sealing effect and avoid sealing failure, effectively preventing gas leakage between the air piston 5 and the cylinder sleeve 1 and improving the compression efficiency of the gas cylinder. At the same time, the liquid scraping plate 9 or the double guide ring structure 17 on the upper side of the ionic liquid storage cavity 7 can scrape the ionic liquid adhered to the inner wall of the cylinder sleeve 1 into the ionic liquid storage cavity 7, avoiding leakage of the ionic liquid adhered to the inner wall of the cylinder sleeve 1 with the reciprocating movement of the air piston 5.

[0039] The specific embodiments above cannot be used as a limitation to the protection scope of the utility model, and any alternative improvement or transformation made by the skilled in the art to the utility model embodiments falls within the protection scope of the utility model.

[0040] The utility model is not detailed, and is the known technology of the skilled in the art.

Claims

1. An ion liquid sealed compression cylinder with liquid drive buffer structure, characterized in that: The application relates to a cylinder sleeve, the top of the cylinder sleeve is provided with a cylinder head, the cylinder head is provided with an air inlet one-way valve and an air outlet one-way valve, a gas piston is movably arranged in the cylinder sleeve, a gas compression cavity is formed between the gas piston and the cylinder head, the top of the gas piston is covered with ionic liquid, an ionic liquid storage cavity is arranged between the side wall of the gas piston and the side wall of the cylinder sleeve, the ionic liquid storage cavity is connected with the ionic liquid on the top of the gas piston through an ionic liquid channel in the gas piston, the ionic liquid is used for cooling, lubricating and sealing between the gas piston and the cylinder sleeve, a liquid scraping assembly is arranged on the side wall of the gas piston on the upper side of the ionic liquid storage cavity, an oil cylinder is arranged at the bottom of the cylinder sleeve, an oil piston is movably arranged in the oil cylinder, the oil piston is connected with the gas piston through a piston rod, the top and the bottom of the side wall of the oil cylinder are provided with hydraulic oil inlets and outlets, a through hole is arranged in the oil piston and penetrates the oil piston from top to bottom, the two ends of the through hole are provided with necked portions, a buffering rod in shape cooperation is movably arranged in the through hole, and a gap is formed between the outer wall of the buffering rod and the inner wall of the through hole.

2. The ion liquid sealed compressed gas cylinder with liquid driven buffer structure according to claim 1, characterized in that: The liquid scraping assembly comprises a liquid scraping plate, and the liquid scraping plate is used for scraping the ionic liquid adhered to the inner wall of the cylinder sleeve into the ionic liquid storage cavity.

3. The ion liquid sealed compressed gas cylinder with liquid driven buffer structure according to claim 2, characterized in that: The top of the liquid scraping plate is fixedly pressed by a fixing ring, and the fixing ring is fixedly connected with the top of the gas piston through a plurality of screws.

4. The ion liquid sealed compressed gas cylinder with liquid driven buffer structure of claim 2, wherein: The edge of the liquid scraping plate is in sliding contact with the inner wall of the cylinder sleeve.

5. The ionic liquid sealed compressed gas cylinder with liquid driven buffer structure of claim 1, wherein: The liquid scraping assembly comprises a double-guide-ring structure, the double-guide-ring structure is used for guiding the reciprocating movement of the gas piston and scraping the ionic liquid adhered to the inner wall of the cylinder sleeve into the ionic liquid storage cavity.

6. The ion liquid sealed compressed gas cylinder with liquid driven buffer structure of claim 5, wherein: The double-guide-ring structure comprises two guide rings arranged on the side wall of the gas piston.

7. The ion liquid seal compressed gas cylinder with liquid drive buffer structure of claim 5, wherein: The outer side of the guide ring is in sliding contact with the inner wall of the cylinder sleeve.

8. The ion liquid sealed compressed gas cylinder with liquid driven buffer structure of claim 1, wherein: A plurality of sealing rings and guide rings are arranged between the gas piston and the cylinder sleeve on the lower side of the ionic liquid storage cavity.

9. The ion liquid sealed compressed gas cylinder with liquid driven buffer structure of claim 1, wherein: A plurality of sealing rings and guide rings are arranged between the oil piston and the oil cylinder.

10. The ion-liquid sealed compressed gas cylinder with liquid- driven buffer structure of claim 1, wherein: The shapes of the two ends of the buffering rod are matched with the shapes of the necked portions of the two ends of the through hole, the necked portions are blocked, and the side wall of the buffering rod is provided with a flat surface, and the flat surface forms a gap with the inner wall of the through hole.

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