阅读说明：本技术 一种三级高压泵 (Three-stage high-pressure pump ) 是由 高杨清 高雪峰 苏明明 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种三级高压泵,涉及气泵领域,气缸盖、一级活塞和一级气缸管组成体积可变的一级气缸；二级气缸管一端安装在一级活塞开设的孔内,另一端安装在二级活塞上,二级活塞安装在定位座上；所述二级气缸管、单向阀座和二级活塞组成体积可变的二级气缸；气缸盖上安装有三级活塞的一端,三级活塞另一端外侧壁设置有三级气缸管,三级活塞中心孔内设置有高压单向阀；所述三级气缸管安置于一级活塞开设的孔内,三级气缸管下方设置有单向阀座；所述单向阀座、三级气缸管、三级活塞组成体积可变的三级气缸。本发明为三级高压气体泵,三级压缩,耗能低,压力大,可以满足大功率、大排气量要求,另外本发明结构紧凑占空间小。(The invention discloses a three-stage high-pressure pump, which relates to the field of air pumps.A first-stage cylinder with variable volume is formed by a cylinder cover, a first-stage piston and a first-stage cylinder pipe; one end of the secondary cylinder pipe is arranged in a hole formed in the primary piston, the other end of the secondary cylinder pipe is arranged on the secondary piston, and the secondary piston is arranged on the positioning seat; the secondary cylinder pipe, the one-way valve seat and the secondary piston form a secondary cylinder with variable volume; one end of a tertiary piston is mounted on the cylinder cover, a tertiary cylinder pipe is arranged on the outer side wall of the other end of the tertiary piston, and a high-pressure one-way valve is arranged in a central hole of the tertiary piston; the three-stage cylinder pipe is arranged in a hole formed in the first-stage piston, and a one-way valve seat is arranged below the three-stage cylinder pipe; the one-way valve seat, the three-stage cylinder pipe and the three-stage piston form a three-stage cylinder with variable volume. The three-stage high-pressure gas pump has three-stage compression, low energy consumption and high pressure, can meet the requirements of high power and large gas discharge amount, and has a compact structure and small occupied space.)

1. A three-stage high-pressure pump is characterized by comprising a positioning seat (15), a first-stage cylinder pipe (20), a cylinder cover (24), a first-stage piston (4), a connecting rod (16), a second-stage cylinder pipe (18), a second-stage piston (11), a three-stage cylinder pipe (5), a three-stage piston (6), a one-way valve seat (27) and a high-pressure one-way valve (21);

the positioning seat (15) is provided with a mounting hole which is through along the thickness direction of the positioning seat;

the primary cylinder pipe (20) is of a hollow columnar structure, and one end of the primary cylinder pipe (20) is arranged on the positioning seat (15);

the cylinder cover (24) is arranged at the other end of the primary cylinder pipe (20) and seals the primary cylinder pipe (20), and the cylinder cover (24) is provided with an air inlet communicated with the primary cylinder pipe (20);

the primary piston (4) is arranged in the primary cylinder pipe (20), and the primary piston (4) can move along the axial direction of the primary cylinder pipe (20);

one end of the connecting rod (16) penetrates through the mounting hole to be connected with the primary piston (4), and the connecting rod (16) can move to drive the primary piston (4);

the second-stage cylinder pipe (18) is arranged in the first-stage cylinder pipe (20), and the first end of the second-stage cylinder pipe (18) is connected with the first-stage piston (4);

the secondary piston (11) is arranged in the secondary cylinder pipe (18), and the secondary piston (11) is connected with the positioning seat (15);

the three-stage cylinder pipe (5) is arranged in the first-stage piston (4); the three-stage piston (6) is arranged in the three-stage cylinder pipe (5), the three-stage piston (6) is connected with the cylinder cover (24), and the three-stage piston (6) is provided with a central hole which is axially communicated with the three-stage piston;

the one-way valve seat (27) is arranged between the second-stage cylinder pipe (18) and the third-stage cylinder pipe (5);

the high-pressure one-way valve (21) is arranged on the one-way valve seat (27) and is positioned in the central hole.

2. The three-stage high-pressure pump according to claim 1, wherein the primary piston (4) is provided with an intake passage (28) communicating with the intake port, the check valve seat (27) is provided with a pilot hole (29), the three-stage high-pressure pump further comprises a two-stage check valve (19), the two-stage check valve (19) is disposed between the intake passage (28) and the pilot hole (29), and the two-stage check valve (19) can be opened and closed to communicate and disconnect the intake passage (28) and the pilot hole (29).

3. The three-stage high-pressure pump according to claim 2, wherein the check valve seat (27) is further provided with a three-stage air inlet passage (30) communicated with the three-stage cylinder pipe (5), the three-stage high-pressure pump further comprises a three-stage check valve (9), the three-stage check valve (9) is arranged between the air inlet passage (28) and the three-stage air inlet passage (30), and the three-stage check valve (9) can be opened and closed to communicate and disconnect the air inlet passage (28) and the three-stage air inlet passage (30).

4. Three-stage high-pressure pump according to claim 1, characterized in that the primary piston (4) is of T-shaped construction, the tertiary piston (6) being connected to the cylinder head through the primary piston (4) in the axial direction of the primary piston (4).

5. The high pressure pump according to claim 4, characterized in that the primary piston (4) comprises a longitudinal section and a transverse section; the longitudinal section extends along the axial direction of the first-stage cylinder pipe (20), and the third-stage piston (6) is arranged on the longitudinal section; the transverse section is arranged at one end of the longitudinal section, the transverse section and the longitudinal section are vertically connected to form a T shape, and one end of the connecting rod is sleeved on the longitudinal section and is connected with the transverse section through a connecting rod pin (22).

6. Three-stage high-pressure pump according to claim 1, characterized in that the cylinder head (24) is provided with an output connection (25), and the compressed gas enters the output connection (25) through the high-pressure check valve (21) and flows out through the output connection (25).

7. Three-stage high-pressure pump according to claim 1, characterized in that a primary one-way valve (2) is arranged in the inlet port (1), through which primary one-way valve (2) gas enters the primary cylinder pipe (20).

8. Three-stage high-pressure pump according to claim 1, characterized in that a primary piston ring (23) is arranged between the primary cylinder (3) and the primary piston (4); a secondary piston ring (17) is arranged between the secondary piston (11) and the secondary cylinder pipe (18), and a high-pressure piston ring (7) is arranged between the tertiary cylinder pipe (5) and the tertiary piston (6).

9. Three-stage high-pressure pump according to claim 1, characterized in that the one-way valve seat (27) is of inverted T-shaped configuration, the one-way valve seat (27) comprising a raised portion and a platform portion, wherein the raised portion is disposed inside the three-stage cylinder pipe (5) and adjacent to the three-stage piston (6), the outer ring of the platform portion is in threaded connection with the first piston (4), and the first piston (4) is in threaded connection with the second cylinder pipe (18).

10. The three-stage high-pressure pump as claimed in claim 1, wherein the secondary piston (11) and the primary piston (4) are each provided with a saw-tooth structure on part of the outer side wall.

Technical Field

The invention relates to the technical field of high-pressure pumps, in particular to a three-stage high-pressure pump.

Background

High-pressure gas pumps sold in the current market generally output high-pressure gas after multi-stage pressurization, but at most, the high-pressure gas does not exceed three-stage pressurization; secondly, the heat dissipation mode mainly relies on the air natural cooling, and this type of high pressure air pump, its main shortcoming that exists: firstly, the output working pressure is low and generally does not exceed 20 MP; secondly, the heat dissipation effect is poor, and the high-pressure cavity and the high-pressure piston are easy to heat during working and cannot work continuously and rapidly for a long time; thirdly, the motor drive is not suitable to be applied, the boosting speed is slow, and the working efficiency is low.

In addition, in the prior art, the high-pressure air pump has a huge structure, so that the vibration noise is very large, the whole structure is huge, the occupied area of the machine is very large, a very large space and an installation site are required, and meanwhile, a lot of inconvenience is brought to installation and maintenance.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the three-stage high-pressure pump which can meet the design requirements of high power, large air displacement and small volume, can realize three-stage compression, and has low energy consumption and high pressure.

The present invention achieves the above-described object by the following technical means.

A three-stage high-pressure pump comprises a positioning seat, a first-stage cylinder pipe, a cylinder cover, a first-stage piston, a connecting rod, a second-stage cylinder pipe, a second-stage piston, a third-stage cylinder pipe, a third-stage piston, a one-way valve seat and a high-pressure one-way valve;

the positioning seat is provided with a mounting hole which is communicated along the thickness direction of the positioning seat;

the first-stage cylinder pipe is of a hollow columnar structure, and one end of the first-stage cylinder pipe is arranged on the positioning seat;

the cylinder cover is arranged at the other end of the primary cylinder pipe and seals the primary cylinder pipe, and the cylinder cover is provided with an air inlet communicated with the primary cylinder pipe;

the primary piston is arranged in the primary cylinder pipe and can move along the axial direction of the primary cylinder pipe;

one end of the connecting rod penetrates through the mounting hole to be connected with the primary piston, and the connecting rod can move to drive the primary piston;

the second-stage cylinder pipe is arranged in the first-stage cylinder pipe, and the first end of the second-stage cylinder pipe is connected with the first-stage piston;

the secondary piston is arranged in the secondary cylinder pipe and is connected with the positioning seat;

the third-stage cylinder pipe is arranged in the first-stage piston; the three-stage piston is arranged in the three-stage cylinder pipe, the three-stage piston is connected with the cylinder cover, and the three-stage piston is provided with a central hole which is axially communicated with the three-stage piston;

the one-way valve seat is arranged between the second-stage cylinder pipe and the third-stage cylinder pipe;

the high-pressure one-way valve is arranged on the one-way valve seat and is positioned in the central hole.

Furthermore, an air inlet channel communicated with the air inlet is formed in the first-stage piston, a flow guide hole is formed in the one-way valve seat, the three-stage high-pressure pump further comprises a second-stage one-way valve, the second-stage one-way valve is arranged between the air inlet channel and the flow guide hole, and the second-stage one-way valve can be opened and closed to communicate and disconnect the air inlet channel and the flow guide hole.

Furthermore, the check valve seat is further provided with three sections of air inlet channels communicated with the three-stage air cylinder pipe, the three-stage high pressure pump further comprises three sections of check valves, the three sections of check valves are arranged between the air inlet channels and the three sections of air inlet channels, and the three sections of check valves can be opened and closed to communicate and disconnect the air inlet channels and the three sections of air inlet channels.

Furthermore, the primary piston is of a T-shaped structure, and the tertiary piston penetrates through the primary piston along the axial direction of the primary piston and is connected with the cylinder cover.

Further, the primary piston includes a longitudinal section and a transverse section; the longitudinal section extends along the axial direction of the first-stage cylinder pipe, and the third-stage piston is arranged on the longitudinal section; the transverse section is arranged at one end of the longitudinal section, the transverse section is vertically connected with the longitudinal section to form a T shape, and one end of the connecting rod is sleeved on the longitudinal section and is connected with the transverse section through a connecting rod pin.

Furthermore, an output connector is installed on the cylinder cover, and compressed gas enters the output connector through a high-pressure one-way valve and flows out through the output connector.

Furthermore, a primary one-way valve is arranged in the air inlet, and air enters the primary air cylinder pipe through the primary one-way valve.

Further, a primary piston ring is arranged between the primary cylinder and the primary piston; and a second-stage piston ring is arranged between the second-stage piston and the second-stage cylinder pipe, and a high-pressure piston ring is arranged between the third-stage cylinder pipe and the third-stage piston.

Furthermore, one-way valve seat is the structure of falling T font, one-way valve seat includes bulge and platform part, wherein, bulge arranges in the tertiary cylinder is intraductal and be close to tertiary piston, the outer lane of platform part with first piston threaded connection, first piston and second cylinder pipe threaded connection.

Furthermore, the outer side walls of the secondary piston and the primary piston are respectively provided with a saw-tooth structure.

In the working method of the three-stage high-pressure pump, when the connecting rod drives the first-stage piston to move upwards, gas in the first-stage cylinder and the third-stage cylinder is compressed, and gas enters the second-stage cylinder;

the method specifically comprises the following steps: gas enters the first-stage cylinder through the gas inlet and the first-stage check valve, the connecting rod drives the first-stage piston to move upwards in the first-stage cylinder pipe so that the pressure of the gas in the first-stage cylinder is increased, the gas enters the second-stage cylinder through the gas inlet, at the moment, the second-stage cylinder is in a gas inlet state, and the pressure of the gas in the third-stage cylinder is increased due to the fact that the third-stage cylinder pipe slides relative to the third-stage piston, so that the gas in the third-stage cylinder is in a compressed state;

when the connecting rod drives the first-stage piston to move downwards, the first-stage cylinder and the third-stage cylinder are filled with air, and the air in the second-stage cylinder is compressed;

the method specifically comprises the following steps: the connecting rod drives the first-level piston to move downwards, the size of the first-level cylinder is enlarged and is in an air inlet state, the first-level piston drives the second-level cylinder pipe to move along the second-level piston so that the gas pressure in the second-level cylinder is enlarged, gas enters the third-level cylinder through the three-section check valve, at the moment, the third-level cylinder pipe slides relative to the third-level piston so that the size of the third-level cylinder is enlarged, and at the moment, the third-level cylinder is in an air inlet state.

Has the advantages that:

1. the three-stage high-pressure gas pump has three-stage compression, low energy consumption and high pressure, can meet the requirements of high power and large gas discharge amount, and has a compact structure and small occupied space.

2. The invention can conveniently cool the three-stage high-pressure pump through air cooling, and in addition, the transverse hole is arranged on the first-stage cylinder pipe, the second-stage piston and the zigzag structure is arranged on the first-stage piston, so that the cooling efficiency can be improved.

3. Dynamic sealing can be realized by arranging a second-stage piston ring, a first-stage piston ring, a high-pressure piston ring, a second-stage cylinder pipe, a first-stage cylinder pipe and a third-stage cylinder pipe.

4. The primary piston is designed to be of a T-shaped structure, so that a working part and a non-working part of the primary piston are separated, on one hand, materials can be saved, on the other hand, cooling efficiency can be improved, unnecessary energy consumption is reduced, for example, unnecessary friction between the piston and a cylinder pipe is reduced, a gap between a first cylinder pipe and a first piston is increased, and air cooling efficiency can be improved; in addition, a stepped hole is formed in the center of the primary piston, and the purpose of forming the stepped hole is to facilitate installation and positioning of a structure in the stepped hole.

5. A stepped through hole is formed in the center of the third piston, a high-pressure one-way valve and a limiting rod are arranged in the stepped through hole, the fact that gas after three-stage compression enters the gas transmission joint to drive the actuating part can be achieved, in addition, the limiting rod is arranged to enable gas after three-stage compression to flow out through a gap between the limiting rod and the center hole, the flowing speed of the gas is improved, and meanwhile, a guiding effect is achieved on the gas.

6. The primary piston is provided with a plurality of air inlets, so that air can enter through the plurality of air holes simultaneously, and the air inlet speed is improved.

Drawings

Fig. 1 is a schematic structural diagram of a three-stage high-pressure pump according to an embodiment of the present invention.

Reference numerals:

1-an air inlet; 2-a primary one-way valve; 3-first-stage cylinder; 4-primary piston; 5-three-stage cylinder pipes; 6-three-stage piston; 7-a high-pressure piston ring; 8-three-stage cylinder; 9-three-section one-way valve; 10-a secondary cylinder; 11-a secondary piston; 12-a crankshaft; 13-a motor; 14-a crankcase; 15-positioning seats; 16-a connecting rod; 17-a secondary piston ring; 18-a secondary cylinder pipe; 19-a two-section check valve; 20-a first-stage cylinder pipe; 21-high pressure check valve; 22-link pin; 23-a primary piston ring; 24-a cylinder head; 25-an output connector; 26-a limiting rod; 27-one-way valve seat; 28-air intake; 29-diversion holes; 30-three air inlet holes.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A three-stage high-pressure pump comprises a positioning seat 15, a first-stage cylinder pipe 20, a cylinder cover 24, a first-stage piston 4, a connecting rod 16, a second-stage cylinder pipe 18, a second-stage piston 11, a third-stage cylinder pipe 5, a third-stage piston 6, a one-way valve seat 27 and a high-pressure one-way valve 21;

the positioning seat 15 is provided with a mounting hole which is through along the thickness direction;

the first-stage cylinder pipe 20 is of a hollow columnar structure, and one end of the first-stage cylinder pipe 20 is arranged on the positioning seat 15;

the cylinder cover 24 is arranged at the other end of the primary cylinder pipe 20 and seals the primary cylinder pipe 20, and the cylinder cover 24 is provided with an air inlet communicated with the primary cylinder pipe 20;

the primary piston 4 is arranged in the primary cylinder pipe 20, and the primary piston 4 can move along the axial direction of the primary cylinder pipe 20;

one end of the connecting rod 16 penetrates through the mounting hole to be connected with the primary piston 4, and the connecting rod 16 can move to drive the primary piston 4;

the second-stage cylinder pipe 18 is arranged in the first-stage cylinder pipe 20, and a first end of the second-stage cylinder pipe 18 is connected with the first-stage piston 4;

the secondary piston 11 is arranged in the secondary cylinder pipe 18, and the secondary piston 11 is connected with the positioning seat 15;

the three-stage cylinder pipe 5 is arranged in the primary piston 4; the three-stage piston 6 is arranged in the three-stage cylinder pipe 5, the three-stage piston 6 is connected with the cylinder cover 24, and the three-stage piston 6 is provided with a central hole which is axially communicated;

the one-way valve seat 27 is arranged between the second-stage cylinder pipe 18 and the third-stage cylinder pipe 5;

the high-pressure check valve 21 is arranged on the check valve seat 27 and is positioned in the central hole.

The primary piston 4 is provided with an air inlet channel 28 communicated with the air inlet, the one-way valve seat 27 is provided with a flow guide hole 29, the three-stage high-pressure pump further comprises a second-stage one-way valve 19, the second-stage one-way valve 19 is arranged between the air inlet channel 28 and the flow guide hole 29, and the second-stage one-way valve 19 can be opened and closed to communicate and disconnect the air inlet channel 28 and the flow guide hole 29.

The check valve seat 27 is further provided with three sections of air inlet passages 30 communicated with the three-stage cylinder pipe 5, the three-stage high-pressure pump further comprises three sections of check valves 9, the three sections of check valves 9 are arranged between the air inlet passage 28 and the three sections of air inlet passages 30, and the three sections of check valves 9 can be opened and closed to communicate and disconnect the air inlet passage 28 and the three sections of air inlet passages 30.

The primary piston 4 is of a T-shaped structure, and the tertiary piston 6 penetrates through the primary piston 4 along the axial direction of the primary piston 4 to be connected with the cylinder cover.

Wherein the primary piston 4 comprises a longitudinal section and a transverse section; the longitudinal section extends along the axial direction of the primary cylinder pipe 20, and the tertiary piston 6 is arranged on the longitudinal section; the transverse section is arranged at one end of the longitudinal section, the transverse section and the longitudinal section are vertically connected to form a T shape, and one end of the connecting rod is sleeved on the longitudinal section and is connected with the transverse section through a connecting rod pin 22.

Wherein, the cylinder head 24 is provided with an output joint 25, and the compressed gas enters the output joint 25 through the high-pressure one-way valve 21 and flows out through the output joint 25.

Wherein, be provided with one-level check valve 2 in the air inlet 1, gas is in through one-level check valve 2 gets into in one-level cylinder pipe 20.

Wherein, a primary piston ring 23 is arranged between the primary cylinder 3 and the primary piston 4; a secondary piston ring 17 is arranged between the secondary piston 11 and a secondary cylinder pipe 18, and a high-pressure piston ring 7 is arranged between the tertiary cylinder pipe 5 and the tertiary piston 6.

The one-way valve seat 27 is of an inverted T-shaped structure, the one-way valve seat 27 comprises a convex part and a platform part, the convex part is arranged in the three-stage cylinder pipe 5 and is close to the three-stage piston 6, the outer ring of the platform part is in threaded connection with the first piston 4, and the first piston 4 is in threaded connection with the second cylinder pipe 18. The outer side walls of the secondary piston 11 and the primary piston 4 are both provided with sawtooth structures.

The working process is as follows:

gas enters the first-stage cylinder 3 through the gas inlet 1 and the first-stage check valve 2, the connecting rod 16 drives the first-stage piston 4 to move upwards in the first-stage cylinder pipe 20, so that the gas pressure in the first-stage cylinder 3 is increased, the gas enters the second-stage cylinder 10 through the gas inlet hole 28, at the moment, the second-stage cylinder 10 is in a gas inlet state, and the gas pressure in the third-stage cylinder 8 is increased due to the fact that the third-stage cylinder pipe 6 slides relative to the third-stage piston 6, so that the gas in the third-stage cylinder 8 is in a compressed state;

connecting rod 16 drives one-level piston 4 and descends, and 3 volume grow of one-level cylinder are in the state of admitting air, thereby one-level piston 4 drives second grade cylinder pipe 18 and makes the gaseous pressure grow in the second grade cylinder 10 along the activity of second grade piston 11, and is gaseous in three-stage cylinder 8 through three-section check valve 9 entering, and at this moment, tertiary cylinder pipe 6 slides and makes 8 volume grow of tertiary cylinder 6 relatively tertiary piston, and at this moment, tertiary cylinder 8 is in the state of admitting air.

Referring to fig. 1, a motor 13 is mounted on one side of a crankcase 14 through a bolt, the motor 13 drives a crankshaft 12 to rotate, inner rings of two bearings are mounted on the crankshaft 12, connecting rods 16 are respectively mounted on outer rings of the bearings, a primary piston 4 on the connecting rod 12 can be driven to slide up and down in a reciprocating manner along the inner wall of a primary cylinder tube 20 through the rotation of the crankshaft 12, and the crankshaft 12, the connecting rods 16 and the primary piston form a four-bar mechanism.

The air purification device comprises a first-stage cylinder pipe 20, a cylinder cover 24, a sealing element, an air inlet 1, a first-stage check valve 2, an L-shaped air inlet 1, a valve plate baffle, a valve plate, a first-stage air inlet pipe 20, a second-stage check valve 2, a second-stage air inlet pipe 20, a second-stage air inlet pipe 20, a first-stage air inlet pipe, a second-stage air inlet pipe and a second-stage air inlet pipe, wherein the first-stage air cylinder pipe 20 is provided with the cylinder cover 24, the cylinder cover 24 is sealed with the cylinder cover 24 through the sealing element between the cylinder cover 24 and the first-stage cylinder pipe 20, the cylinder cover 24 is provided with the air inlet 1, the first-stage air inlet pipe 2 is provided with the cylinder cover 24, the first-stage air inlet 1, the first-stage air inlet 2, the first-stage air inlet 1 is provided with the first-stage air inlet, the first-stage check valve plate baffle, one end and the first-stage check valve plate baffle is provided with the valve plate and the one end is installed below the valve plate and the valve plate baffle, one end is installed below the cylinder cover, one end is installed by screws, one side of the cylinder cover, the valve plate, one end is covered by the second-plate, one side cover, the second-plate is covered by the second-plate, the second-stage air inlet pipe, and the second-plate, and the second-stage air inlet pipe, and the second-plate, and the second-stage air inlet pipe, the second-valve, and the second-plate, one-valve, one-plate, the second-plate, one-plate, the second-; the two-stage check valve 19 is similar in structure to the one-stage check valve 2.

The primary piston 4 is of a T-shaped structure and is connected with the connecting rod 16 through a connecting rod pin 22, a stepped hole is formed in the center of the primary piston 4, the stepped hole is formed to facilitate installation and positioning of various components, a sawtooth-shaped structure is formed in one end of the outer side wall of the primary piston 4 to increase a gap and improve the cooling effect, a tertiary cylinder pipe 5 is placed in the stepped hole in an installing and positioning mode, one part of a tertiary piston 6 is arranged in the tertiary cylinder pipe 5, the other part of the tertiary piston 6 is arranged in a cylinder cover 24, the tertiary piston 6 is fixed relative to the cylinder cover 24, a high-pressure piston ring 7 is arranged between the tertiary piston 6 and the tertiary cylinder pipe 5, and the high-pressure piston ring 7 can be in dynamic connection with the tertiary piston pipe; the one-way valve seat 27 is further installed in the stepped hole, the one-way valve seat 27 is arranged at the position below the three-stage cylinder pipe 5 and is in threaded connection with an internal thread in the stepped hole in a matched mode through an external thread of the one-way valve seat 27, the one-way valve seat 27 is of a convex structure, a boss structure is arranged above the boss structure, the boss structure above the boss structure is arranged in the three-stage cylinder pipe 5 and is close to the position below the three-stage piston 6, the outer side wall of the part of the platform structure below the boss structure is connected with the first-stage piston 4 and the second-stage cylinder pipe 18 through sealing parts, an air guide hole 29 which can be communicated with the air inlet hole 28 is formed in the one-way valve seat 27, the air guide hole 29 is opened and closed through the second-stage one-way valve 19, a three-section air inlet hole 30 is formed in the center of the one-way valve seat 27, the outlet end of the three-section air inlet hole 30 is provided with a three-section one-way valve 9, and the three-section one-way valve 9 is a ball valve and comprises a spherical body and a spring.

Secondary piston 11 passes through the bolt mounting on positioning seat 15, has seted up the zigzag structure on the secondary piston 11 for increase clearance improves the radiating efficiency, is provided with secondary piston ring 17 between secondary piston 11 and the secondary piston ring 17, and secondary piston ring 17 is used for realizing the dynamic seal between the two.

When the primary piston 4 moves downwards, the primary check valve 2 is opened, gas enters the primary cylinder 3 through the gas inlet 1 through the gas inlet end, when the primary piston 4 moves upwards, the primary check valve 2 is closed, and the gas in the primary cylinder 3 is in a compressed state; compressed gas enters the secondary cylinder 10 through the two-section check valve 19, and when the primary piston 4 moves downwards, the gas in the secondary cylinder 10 is in a compressed state; compressed gas enters the three-stage cylinder 8 through the three-stage check valve 9, when the primary piston 4 moves upwards, the gas in the three-stage cylinder 8 is in a compressed state, and the gas outputs the generated high-pressure gas through the high-pressure check valve 21.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.