CN217401311U

CN217401311U - Gas-liquid supercharging device

Info

Publication number: CN217401311U
Application number: CN202220056954.4U
Authority: CN
Inventors: 柴挺飞
Original assignee: Ningbo Yongbo Machinery Manufacturing Co ltd
Current assignee: Ningbo Yongbo Machinery Manufacturing Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-09-09
Anticipated expiration: 2032-01-11

Abstract

The utility model relates to a gas-liquid pressure boost technical field discloses a gas-liquid pressure boost device, including cylinder and the hydro-cylinder of series connection, the cylinder is including connecting first piston and the first pull rod that sets up, the hydro-cylinder includes cylinder body and second piston, second piston area is less than first piston area, the tip and the second piston fixed connection of first pull rod, the one end of keeping away from the cylinder in the second piston in the cylinder body is hydraulic oil chamber, the hydraulic oil intracavity is filled with hydraulic oil, the one end that the cylinder body kept away from the cylinder is provided with the input/output end of exporting or suction hydraulic oil, be provided with the benefit oil groove that communicates with the outer wall on the second cylinder body inner wall, the one end that the second cylinder body was kept away from in the benefit oil groove is connected with an oil cup, when the second piston moves to block the benefit oil groove, the benefit oil groove is sealed; when the second piston leaves the oil supplementing groove, the oil supplementing groove is opened, and the gas-liquid supercharging device can avoid the problem of insufficient hydraulic pressure output caused by hydraulic oil loss.

Description

Gas-liquid supercharging device

Technical Field

The utility model relates to a gas-liquid pressure boost technical field specifically is a pneumatic pressure booster.

Background

The gas-liquid pressure cylinder is improved and designed by combining the advantages of the cylinder and the oil cylinder. The principle of the method is known according to the Pascal law, the sealed liquid can constantly transfer the applied pressure to all directions, namely the liquid has the transfer capacity to the pressure, and the gas-liquid pressure cylinder utilizes the property of the liquid and has the following principle: the area of the large piston (cylinder piston) is A1, the area of the small piston (cylinder piston) is A2, the input air pressure is p1, the output hydraulic pressure is p2, the air pressure acts on the large piston to push the small piston to move rightwards through the pull rod, and the thrust F on the piston is as follows: F-P1-a 1-P2-a 2; hydraulic pressure P2 is thus derived: the fact that the hydraulic pressure output by the pneumatic and hydraulic pressure boosting cylinder is increased by a multiple of A1/A2 is shown by P2 (A1/A2) and P1, so that the working principle of the pneumatic and hydraulic pressure boosting device is substantially the ratio of the piston areas of the cylinder and the oil cylinder, and the piston area of the cylinder is larger than the piston area of the oil cylinder to realize pressure boosting.

The conventional gas-liquid supercharging device has the problem that hydraulic oil in a hydraulic cylinder is lost due to long-time use, so that insufficient hydraulic output is caused.

SUMMERY OF THE UTILITY MODEL

To conventional gas-liquid supercharging device can lead to the not enough problem of liquid output pressure because of the loss of hydraulic oil in the use, the utility model aims to provide a can ensure the stable atmospheric pressure supercharging device of liquid output pressure.

In order to achieve the above object, the utility model provides a following technical scheme: a gas-liquid supercharging device comprises a cylinder and an oil cylinder which are connected in series, wherein the cylinder comprises a first piston and a first pull rod which are connected, the oil cylinder comprises a cylinder body and a second piston, the area of the second piston is smaller than that of the first piston, the end part of the first pull rod is fixedly connected with the second piston, one end, far away from the cylinder, of the second piston in the cylinder body is a hydraulic oil cavity, hydraulic oil is filled in the hydraulic oil cavity, one end, far away from the cylinder, of the cylinder body is provided with an input and output end for outputting or sucking the hydraulic oil, an oil supplementing groove communicated with the outer wall is formed in the inner wall of the second cylinder body, one end, far away from the second cylinder body, of the oil supplementing groove is connected with an oil cup, and when the second piston runs to a blocking oil supplementing groove, the oil supplementing groove is closed; when the second piston leaves the oil supplementing groove, the oil supplementing groove is opened.

By adopting the scheme, the oil cup is additionally arranged, the oil supplementing groove is arranged between the oil cup and the hydraulic oil cavity, the oil supplementing groove is opened or closed through the movement of the second piston, the second piston operates towards one end far away from the cylinder to carry out hydraulic output, the second piston is positioned at one end, close to the cylinder, of the oil supplementing groove at first, the oil cup is communicated with the hydraulic oil cavity, the oil supplementing groove is blocked by the second piston along with the movement of the second piston, the second piston continues to operate until the hydraulic output is finished, and in the process, the second piston is always in a state of blocking the oil supplementing groove; when the second piston moves reversely, hydraulic oil is drawn back from the inlet end and the outlet end again, the second piston is in a state of sealing the oil supplementing groove at first, when the second piston moves to the oil supplementing groove again, the oil supplementing groove is opened, when the second piston finally moves to one side, close to the cylinder, of the oil supplementing groove, the oil supplementing groove is completely opened, the oil cup supplements oil according to whether a loss gap exists in the hydraulic oil cavity, it is ensured that sufficient hydraulic oil in the hydraulic oil cavity always guarantees sufficient output pressure, and the problem that the output pressure is insufficient due to loss of the hydraulic oil is avoided.

Preferably, a pressurizing mechanism is arranged at one end, far away from the cylinder, of the second piston, the pressurizing mechanism comprises a second pull rod, the area of the second pull rod, far away from the first pull rod, of the second piston is smaller than that of the second piston, the second pull rod penetrates out of the cylinder body, and a hydraulic oil cavity is formed between the second pull rod and the cylinder body.

By adopting the scheme, after the second pull rod is additionally arranged, the piston area (the second piston area-the second pull rod area) of the hydraulic oil output end is reduced, the piston area is far smaller than the original area of the second piston, the ratio of the piston areas of the first piston and the hydraulic oil output end is increased, and the output pressure is obviously increased.

Preferably, an annular tapered groove is recessed in the joint of the second piston and the second pull rod.

By adopting the scheme, the arrangement of the annular conical groove can increase the capacity of the hydraulic oil cavity and ensure that the hydraulic output force is large enough; on the other hand, the smoothness of the oil in the oil cup entering the hydraulic oil cavity can be improved, and therefore the oil supplementing efficiency is accelerated.

Preferably, a pressure gauge connected to the hydraulic oil chamber is connected to the outside of the cylinder.

By adopting the scheme, the pressure gauge can monitor the pressure gauge in real time to express the content change condition of the hydraulic oil in the hydraulic oil cavity.

Preferably, the oil cylinder and the air cylinder are distributed at intervals, the oil cylinder and the air cylinder are fixedly connected with the connecting columns fixedly connected with the oil cylinder and the air cylinder through two ends, and when the second piston moves to the maximum stroke in the direction of the air cylinder, one end, far away from the second piston, of the second pull rod extends out of the hydraulic oil cavity.

By adopting the scheme, after the oil cylinder and the air cylinder are distributed at intervals, the second piston can be driven to partially extend out of the oil cylinder, the length of the cylinder body of the oil cylinder is shortened, and the manufacturing cost is reduced.

Preferably, one end of the cylinder body, which is far away from the cylinder, is provided with a first sealing element in sealing fit with the second pull rod, and second sealing elements in sealing fit with the second piston are arranged on two sides of the oil supplementing groove in the cylinder body.

By adopting the scheme, the arrangement of the first sealing element and the second sealing element ensures the sealing performance of the matching part of the second piston and the second pull rod and the cylinder body.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: an oil cup is additionally arranged, an oil supplementing groove is arranged between the oil cup and the hydraulic oil cavity, the oil supplementing groove is opened or closed through the movement of a second piston, the second piston moves to one end far away from the cylinder to carry out hydraulic output, the second piston is located at one end, close to the cylinder, of the oil supplementing groove at the beginning, the oil cup is communicated with the hydraulic oil cavity, the oil supplementing groove is blocked by the second piston along with the movement of the second piston, the second piston continues to move until the hydraulic output is finished, and in the process, the second piston is always in a state of blocking the oil supplementing groove; when the second piston reverse movement, hydraulic oil is taken back from the end of cominging in and going out once more, the second piston is in the state of sealing the oil supply groove at first, when it moves to the oil supply groove once more, the oil supply groove is opened, when it finally moves to one side that the oil supply groove is close to the cylinder, the oil supply groove is opened completely, the oil cup is according to whether there is the loss clearance in the hydraulic oil intracavity to carry out the oil supply, guarantee that hydraulic oil chamber has sufficient hydraulic oil to guarantee sufficient output pressure all the time, avoid because the insufficient problem of output pressure that the hydraulic oil loss leads to takes place.

Drawings

FIG. 1 is a partial cross-sectional view of a gas-liquid pressure increasing device of an embodiment;

fig. 2 is an enlarged view of a in fig. 1.

In the figure: 1-a cylinder; 2-pressure regulating filter; 3-an electromagnetic valve; 4-a first pull rod; 5-connecting the column; 6-cylinder body; 7-a second piston; 8-a second pull rod; 9-a hydraulic oil chamber; 10-a first seal; 11-an oil cup; 12-an input/output end; 13-oil supplementing groove; 14-a second seal; 15. a pressure gauge; 16-ring-shaped conical groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Examples

A gas-liquid supercharging device is disclosed, and is shown in fig. 1-2, and comprises a cylinder 1 and an oil cylinder which are connected in series, wherein the oil cylinder and the cylinder 1 are distributed at intervals, the oil cylinder and the cylinder 1 are fixedly connected with a connecting column 5 fixedly connected with the two through two ends, a first piston (not shown) and a first pull rod 4 which is connected with the first piston and penetrates out of the cylinder 1 are arranged in the cylinder 1, a second piston 7 is arranged in the oil cylinder, one end of the first pull rod 4 far away from the first piston is fixedly connected with the second piston 7, the cylinder 1 is connected with a gas source, a pressure regulating filter 2 and an electromagnetic valve 3 are sequentially connected between the gas source and the cylinder 1, the area of the first piston is larger than that of the second piston 7, a hydraulic oil cavity 9 filled with hydraulic oil is arranged at one end of the cylinder 6 far away from the cylinder 1, an inlet and outlet end 12 for outputting or pumping in the hydraulic oil is arranged at one end of the cylinder 6 far away from the cylinder 1, at this time, the hydraulic oil output pressure P (first piston area/second piston 7 area) is greater than the air pressure P, and the supercharging is achieved.

In order to improve the supercharging multiple of the hydraulic oil during output, a supercharging mechanism is arranged at one end, far away from the cylinder 1, of the second piston 7, the supercharging mechanism comprises a second pull rod 8, which is arranged at one end, far away from the first pull rod 4, of the second piston 7, the area of the second pull rod 8 is smaller than that of the second piston 7 and penetrates out of the cylinder body 6, a hydraulic oil chamber 9 is formed between the second pull rod 8 and the cylinder body 6, when the second piston 7 runs to the direction of the cylinder 1 to the maximum stroke, one end, far away from the second piston 7, of the second pull rod 8 extends out of the hydraulic oil chamber 9 to seal the hydraulic oil chamber 9, at the moment, the hydraulic oil output pressure P is equal to (the area of the first piston/(the area of the second piston 7-the area of the second pull rod 8)). the air pressure, and the hydraulic output pressure is further obviously improved.

In the continuous output and suction process of the hydraulic oil, the loss of the hydraulic oil exists, and the hydraulic oil chamber 9 cannot be filled with the hydraulic oil, so that the output pressure is insufficient, therefore, an oil supplementing groove 13 communicated with the outer wall is formed in the inner wall of the second cylinder body 6, one end, far away from the second cylinder body 6, of the oil supplementing groove 13 is connected with an oil cup 11, the oil cup 11 is connected with the oil supplementing groove 13 through an oil pipe, and when the second piston 7 runs to block the oil supplementing groove 13, the oil supplementing groove 13 is closed; when the second piston 7 leaves the oil supplementing groove 13, the oil supplementing groove 13 is opened, and if the hydraulic oil in the hydraulic oil cavity 9 is originally in a full-filling state, the oil cup 11 does not supplement oil; if there is a lack of hydraulic oil in the hydraulic oil chamber 9, the oil in the oil cup 11 will enter the hydraulic oil chamber 9 to fill the hydraulic oil chamber 9, so as to ensure a sufficient output pressure. An annular conical groove 16 is concavely arranged at the joint of the second piston 7 and the second pull rod 8, and the arrangement of the annular conical groove 16 can increase the capacity of the hydraulic oil cavity 9 on one hand and ensure that the hydraulic output force is large enough; on the other hand, the smoothness of the oil in the oil cup 11 entering the hydraulic oil cavity 9 can be improved, and the oil supplementing efficiency is accelerated.

In order to ensure the sealing performance of the cylinder body 6, a first sealing element 10 which is in sealing fit with the second pull rod 8 is arranged at one end, away from the cylinder 1, of the cylinder body 6, second sealing elements 14 which are in sealing fit with the second piston 7 are arranged at two sides of an oil supplementing groove 13 in the cylinder body 6, and the first sealing element 10 and the second sealing elements 14 are sealing rings which are elastically embedded in the cylinder body 6.

The oil cup 11 is additionally arranged, and the second piston 7 is moved to realize communication or sealing of the oil supplementing groove 13 between the oil cup 11 and the cylinder body 6, so that the hydraulic oil cavity 9 is always in the initial oil amount state, and the problem of insufficient hydraulic pressure output caused by hydraulic oil loss is avoided.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a gas-liquid supercharging device, including cylinder (1) and the hydro-cylinder of establishing ties, cylinder (1) is including connecting first piston and first pull rod (4) that set up, the hydro-cylinder includes cylinder body (6) and second piston (7), second piston (7) area is less than first piston area, the tip and the second piston (7) fixed connection of first pull rod (4), the one end of keeping away from cylinder (1) in second piston (7) in cylinder body (6) is hydraulic pressure oil pocket (9), hydraulic pressure oil pocket (9) intussuseption is filled with hydraulic oil, the one end that cylinder (1) was kept away from in cylinder body (6) is provided with the play income end (12) of exporting or the suction, its characterized in that: an oil supplementing groove (13) communicated with the outer wall is formed in the inner wall of the second cylinder body (6), one end, far away from the second cylinder body (6), of the oil supplementing groove (13) is connected with an oil cup (11), and when the second piston (7) runs to block the oil supplementing groove (13), the oil supplementing groove (13) is closed; when the second piston (7) leaves the oil supplementing groove (13), the oil supplementing groove (13) is opened.

2. A gas-liquid pressure increasing device according to claim 1, characterized in that: one end of the second piston (7) far away from the cylinder (1) is provided with a supercharging mechanism, the supercharging mechanism comprises a second pull rod (8) which is arranged at one end of the second piston (7) far away from the first pull rod (4) and has an area smaller than that of the second piston (7) and penetrates out of the cylinder body (6), and a hydraulic oil cavity (9) is formed between the second pull rod (8) and the cylinder body (6).

3. A gas-liquid pressure increasing device according to claim 2, characterized in that: an annular conical groove (16) is concavely arranged at the joint of the second piston (7) and the second pull rod (8).

4. A gas-liquid pressure increasing device according to claim 1, characterized in that: a pressure gauge (15) connected with the hydraulic oil cavity (9) is connected outside the cylinder body (6).

5. A gas-liquid pressure increasing device according to claim 1, characterized in that: the oil cylinder and the air cylinder (1) are distributed at intervals, the oil cylinder and the air cylinder (1) are fixedly connected with the connecting column (5) fixedly connected with the two ends, and when the second piston (7) moves to the maximum stroke in the direction of the air cylinder (1), one end, far away from the second piston (7), of the second pull rod (8) extends out of the hydraulic oil cavity (9).

6. A gas-liquid pressure increasing device according to claim 5, characterized in that: one end of the cylinder body (6) far away from the cylinder (1) is provided with a first sealing piece (10) which is in sealing fit with the second pull rod (8), and second sealing pieces (14) which are in sealing fit with the second piston (7) are arranged on two sides of the oil supplementing groove (13) in the cylinder body (6).