A high performance ultra-high pressure air pump

Abstract

The invention discloses a high-performance ultra-high pressure air pump, including a pedal and a handle assembly, a base is arranged in the middle of the pedal, and a filter is connected to the pedal; a plug, a tightening screw, a one-way valve seat, and a three-stage cylinder pipe are arranged in the middle of the base from bottom to top in sequence; the outer ring of the upper part of the base is connected to the first-stage cylinder pipe through a thread, the base, and a venting joint are connected to one side of the base, the three-stage cylinder pipe is connected to the second-stage fixed piston, a push rod is arranged in the hole of the three-stage cylinder pipe, the lower end of the push rod is connected to the third-stage piston, and the upper end of the push rod passes through the second-stage fixed piston and is connected to the handle assembly through a riveting pin; the lower end of the handle assembly is fixedly connected to the second-stage cylinder pipe, and the lower end of the second-stage cylinder pipe is connected to the first-stage piston. The invention has a compact structure, is novel and reasonable, and the output air is clean and pure, which can be directly used for breathing, improves the air pumping efficiency, greatly reduces the maintenance frequency, and is very convenient to maintain, eliminates safety hazards, improves safety, and increases the service life by 3 times.

Description

Technical Field

[0001] The invention relates to the field of ultra-high pressure air pumps, and in particular to a high-performance ultra-high pressure air pump. Background Art

[0002] Ultra-high pressure pumps are mainly used for inflating tires of super-large load-bearing vehicles, filling small diving container equipment, inflating and filling various small high-pressure containers, various small emergency rescue equipment powered by high-pressure gas, and various pneumatic jacks. Traditional ultra-high pressure pumps have the following defects: 1. The piston is made of rubber material and friction occurs between the piston and the metal cylinder body, so lubricating oil must be added. Lubricating oil is prone to spontaneous combustion under high temperature and high pressure, which poses a safety hazard. 2.. Because traditional air pumps need to add lubricating oil, the output air contains oil, and the compressed air cannot be used directly for breathing. 3. In the traditional air intake method, air is directly inhaled from the upper cover of the first-level air chamber, and particulate matter in the air cannot be filtered. The piston and the metal cylinder body are easy to wear and have low durability. 4. It is prone to failure. The air pump needs to be disassembled and cleaned for sludge every 1-2 months, because there is a lot of dust in the air. After being inhaled into the air pump, it mixes with the oil and water vapor in the air pump to form mud. Too much mud will block the air outlet of the third-level piston head, causing poor air outlet, or even no air can be pumped at all. 5. A connection converter is required to connect the cylinder tube of the air pump to the base, and the high-pressure check valve is installed in the connection converter. If the high-pressure check valve fails or the mud is cleaned, the entire air pump needs to be disassembled to eliminate the fault. Therefore, it is necessary to provide a high-performance ultra-high-pressure air pump that is safe to use, durable, and easy to maintain. Summary of the invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a high-performance ultra-high pressure air pump.

[0004] In order to achieve the above-mentioned technical objectives and meet the above-mentioned technical requirements, the technical solution adopted by the present invention is: a high-performance ultra-high-pressure air pump, including a pedal, a handle assembly, and a pressure gauge, characterized in that: a base is arranged in the middle of the pedal, and a filter is vertically connected to the air inlet A end of the pedal; a plug, a tightening screw, a one-way valve seat, and a three-stage cylinder tube are arranged in sequence in the middle of the base from bottom to top; a first-stage cylinder tube is connected to the outer ring of the upper part of the base by a thread, and a one-way valve B is also symmetrically arranged on the upper part of the base, a venting joint is connected to one side of the base by a thread, and an air pump is connected to the high-pressure gas outlet A on the other side by a thread, and a pressure gauge is also connected to the high-pressure gas outlet A; a second-stage fixed piston is connected to the small outer circle at the upper end of the three-stage cylinder tube by a thread, a push rod is arranged in the hole of the three-stage cylinder tube, and the lower end of the push rod is connected to A three-stage piston male copper head, a three-stage piston is sleeved on the three-stage piston male copper head, a three-stage piston female copper head fastens the three-stage piston on the three-stage piston male copper head, an ultra-high pressure one-way valve B is arranged in the lower end hole of the three-stage piston male copper head, a sealing ring D is arranged in the cavity formed by the three-stage piston at the upper end of the three-stage piston female copper head and the three-stage piston male copper head; the upper end of the push rod passes through the secondary fixed piston and is connected to the handle assembly through a rivet pin; the lower end of the handle assembly is fixedly connected to a secondary cylinder pipe, and the outer ring of the lower end of the secondary cylinder pipe is connected to the primary piston through a thread; the upper end of the primary cylinder pipe is connected to a primary air chamber cover;

[0005] The primary piston includes a primary piston seat, a two-way piston diaphragm, a three-level pressure plate, two one-way valves A, a sealing ring E, and multiple fastening screws A. The three-level pressure plate fastens the two-way piston diaphragm to the bottom surface of the primary piston seat through multiple fastening screws A. The one-way valve A is symmetrically arranged in the primary piston. The one-way valve A is communicated with the secondary air chamber formed by the secondary cylinder pipe and the tertiary cylinder pipe. The threaded connection end of the primary piston seat and the secondary cylinder pipe is provided with a sealing ring E to prevent air from entering the primary air chamber formed by the primary cylinder pipe and the secondary cylinder pipe.

[0006] Preferably, the secondary fixed piston includes a secondary fixed piston seat, an upper cover A, a one-way piston diaphragm, a sealing ring A, a secondary pressure plate and a sealing ring B. The secondary fixed piston seat sequentially fastens the upper cover A, the one-way piston diaphragm and the secondary pressure plate to the small outer circle on the upper part of the three-stage cylinder tube. A sealing ring B is arranged between the outer ring of the secondary pressure plate and the one-way piston diaphragm.

[0007] Preferably, the bidirectional piston diaphragm in the first-stage piston is provided with a large-diameter diaphragm matching the inner diameter of the first-stage cylinder tube and a small-diameter diaphragm matching the outer diameter of the third-stage cylinder tube, thereby changing the pressure in the first-stage air chamber and the second-stage air chamber at the same time.

[0008] Preferably, a retaining ring is provided on the upper portion of the base to limit the one-way valve B from popping up upwards.

[0009] Preferably, an "L"-shaped air inlet B is symmetrically arranged on the upper part of the base, and a high-pressure gas outlet A and a high-pressure gas outlet B are respectively arranged on the left and right directions of the lower part.

[0010] Preferably, an air inlet hole A is provided at the upper portion of the secondary cylinder pipe.

[0011] Preferably, the third-stage piston male copper head is provided with an air inlet hole B

[0012] Preferably, a bleed screw is connected to the outer side of the bleed joint, and a sealing ring C is provided at the connection between the inner end of the bleed screw and the bleed joint.

[0013] Preferably, the venting joint is provided with a high-pressure gas outlet A in the horizontal direction, and a plurality of venting holes are provided on the outer circle.

[0014] Preferably, the bidirectional piston diaphragm and the three-stage piston are made of a composite material of polytetrafluoroethylene and polyimide.

[0015] Preferably, the one-way piston diaphragm is made of a composite material of polytetrafluoroethylene and polyimide.

[0016] Compared with the traditional structure, the beneficial effects of the present invention are as follows: compact structure, novel and reasonable, the output air is clean and pure and can be directly used for breathing, the inflation efficiency is improved, the maintenance frequency is greatly reduced, and the maintenance is very convenient, the potential safety hazards are eliminated, the safety is improved, and the service life is increased by 3 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the front view of the present invention;

[0019] Figure 3 It is a schematic diagram of a left view of the present invention;

[0020] Figure 4 for Figure 2 Middle AA section view;

[0021] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0022] Figure 6 for Figure 4 Enlarged view of point D in the middle;

[0023] Figure 7 for Figure 4 Middle E: Enlarged image;

[0024] Figure 8 for Figure 3 Middle BB section view;

[0025] Fig. 9 for Figure 8 Middle F enlarged image;

[0026] In the figure: 1. pedal, 1-1. air inlet A, 2. handle assembly, 3. rivet pin, 4. push rod, 5. secondary fixed piston, 5-1. secondary fixed piston seat, 5-2. upper cover A, 5-3. one-way piston diaphragm, 5-4. sealing ring A, 5-5. secondary pressure plate, 5-6. sealing ring B, 6. primary cylinder tube, 7. secondary cylinder tube, 7-1. air inlet A, 8. tertiary cylinder tube, 9. primary piston, 9-1. two-way piston diaphragm, 9-2. tertiary pressure plate, 9-3. one-way valve A, 9-4. primary piston seat, 9-5. sealing ring E, 9-6. fastening screw A, 10. filter, 11. bleed screw, 12 .Sealing ring C, 13. Venting joint, 13-1. Venting channel, 13-2. Venting hole, 14. Tightening screw, 15. Plug, 16. Base, 16-1. High-pressure gas outlet A, 16-2. High-pressure gas outlet B, 16-3. Air inlet B, 17. Ultra-high pressure check valve A, 18. Check valve seat, 19. Ultra-high pressure check valve B, 20. Pressure gauge, 21. Three-stage piston female copper head, 22. Sealing ring D, 23. Three-stage piston, 24. Three-stage piston male copper head, 24-1. Inlet hole B, 25. Three-stage air chamber, 26. Secondary air chamber, 27. Primary air chamber, 28. Primary air chamber cover, 29. Retaining ring, 30. Check valve B. DETAILED DESCRIPTION

[0027] The present invention will be further described below.

[0028] Referring to the accompanying drawings, a high-performance ultra-high-pressure air pump includes a pedal 1, a handle assembly 2, and a pressure gauge 20, and is characterized in that: a base 16 is provided in the middle of the pedal 1, and a filter 10 is vertically connected to the air inlet A1-1 end of the pedal 1; a plug 15, a tightening screw 14, a one-way valve seat 18, and a three-stage cylinder tube 8 are sequentially provided in the middle of the base 16 from bottom to top; the upper outer ring of the base 16 is threadedly connected to the first-stage cylinder tube 6, and a one-way valve B30 is also symmetrically provided on the upper part of the base 16, a venting joint 13 is threadedly connected to one side of the base 16, and an air pump is threadedly connected to the high-pressure gas outlet A16-1 on the other side, and a pressure gauge 20 is also connected to the high-pressure gas outlet A16-1; a second-stage fixed piston 5 is threadedly connected to the small outer circle at the upper end of the three-stage cylinder tube 8, a push rod 4 is provided in the hole of the three-stage cylinder tube 8, and the lower end of the push rod 4 A three-stage piston male copper head 24 is connected, a three-stage piston 23 is sleeved on the three-stage piston male copper head 24, and the three-stage piston female copper head 21 fastens the three-stage piston 23 to the three-stage piston male copper head 24. An ultra-high pressure one-way valve B19 is arranged in the lower end hole of the three-stage piston male copper head 24, and a sealing ring D22 is arranged in the cavity formed by the three-stage piston 23 and the three-stage piston male copper head 24 at the upper end of the three-stage piston female copper head 21; the upper end of the push rod 4 passes through the secondary fixed piston 5 and is connected to the handle assembly 2 through the rivet pin 3; the lower end of the handle assembly 2 is fixedly connected to the secondary cylinder pipe 7, and the outer ring of the lower end of the secondary cylinder pipe 7 is connected to the primary piston 9 through a thread; the upper end of the primary cylinder pipe 6 is connected to the primary air chamber cover 28;

[0029] The primary piston 9 includes a primary piston seat 9-4, a two-way piston diaphragm 9-1, a three-stage pressure plate 9-2, two one-way valves A9-3, a sealing ring E9-5, and multiple fastening screws A9-6. The three-stage pressure plate 9-2 fastens the two-way piston diaphragm 9-1 to the bottom surface of the primary piston seat 9-4 through multiple fastening screws A9-6. The primary piston 9 is symmetrically provided with a one-way valve A9-3. The one-way valve A9-3 is communicated with the secondary air chamber 26 formed by the secondary cylinder pipe 7 and the tertiary cylinder pipe 8. The threaded connection end of the primary piston seat 9-4 and the secondary cylinder pipe 7 is provided with a sealing ring E9-5 to prevent air from entering the primary air chamber 27 formed by the primary cylinder pipe 6 and the secondary cylinder pipe 7.

[0030] In this preferred embodiment, the secondary fixed piston 5 includes a secondary fixed piston seat 5-1, an upper cover A5-2, a one-way piston diaphragm 5-3, a sealing ring A5-4, a secondary pressure plate 5-5 and a sealing ring B5-6. The secondary fixed piston seat 5-1 sequentially fastens the upper cover A5-2, the one-way piston diaphragm 5-3 and the secondary pressure plate 5-5 to the upper small outer circle of the tertiary cylinder tube 8. A sealing ring B5-6 is arranged between the outer ring of the secondary pressure plate 5-5 and the one-way piston diaphragm 5-3.

[0031] In this preferred embodiment, the bidirectional piston diaphragm 9-1 in the first-stage piston 9 is provided with a large-diameter diaphragm matching the inner diameter of the first-stage cylinder tube 6 and a small-diameter diaphragm matching the outer diameter of the third-stage cylinder tube 8, thereby changing the pressure in the first-stage air chamber 27 and the second-stage air chamber 26 at the same time.

[0032] In this preferred embodiment, a retaining ring 29 is provided on the upper portion of the base 16 to limit the one-way valve B30 from popping up upward.

[0033] In the preferred embodiment, an "L"-shaped air inlet B16-3 is symmetrically arranged on the upper portion of the base 16, and a high-pressure air outlet A16-1 and a high-pressure air outlet B16-2 are respectively arranged on the left and right directions of the lower portion.

[0034] In this preferred embodiment, an air inlet hole A7 - 1 is provided on the upper portion of the secondary cylinder tube 7 .

[0035] In this preferred embodiment, the third-stage piston male copper head 24 is provided with an air inlet hole B24-1

[0036] In the preferred embodiment, the outside of the bleed joint 13 is connected to a bleed screw 11 , and a sealing ring C12 is provided at the connection between the inner end of the bleed screw 11 and the bleed joint 13 .

[0037] In this preferred embodiment, the venting joint 13 is provided with a high-pressure gas outlet A13-1 in the horizontal direction, and a plurality of venting holes 13-2 are provided on the outer circle.

[0038] In this preferred embodiment, the bidirectional piston diaphragm 9 - 1 and the three-stage piston 23 are made of polytetrafluoroethylene and polyimide composite materials.

[0039] In this preferred embodiment, the one-way piston diaphragm 5-3 is made of a composite material of polytetrafluoroethylene and polyimide.

[0040] In specific implementation, the handle assembly is pulled up, and the filtered air enters the air inlet A1-1 on the pedal 1 from the filter 10, and then enters the air inlet B16-3 on the base 16, the one-way valve B30 on the base is opened, the one-way valve A9-3 in the first-stage piston 9, and the air enters the second-stage air chamber 26; at the same time, the normal-pressure air in the first air chamber is discharged from the air outlet hole of the first-stage air chamber cover 28, and the handle assembly is pulled up and gradually pulls up the air with gradually increased pressure in the second-stage air chamber 26 to enter the third-stage air chamber 25 formed by the third-stage cylinder tube 8 and the push rod 4 from the air inlet hole A7-1, and the handle The assembly is pressed down and the air pressure in the three-stage air chamber 25 continues to gradually increase. The air enters the ultra-high pressure one-way valve B19 from the air inlet hole B24-1 and opens. The ultra-high pressure air continues to descend, and the ultra-high pressure one-way valve A17 opens. The ultra-high pressure air descends from the hole of the tightening screw 14 to the high-pressure gas outlet A16-1 and inflates the small high-pressure gas equipment through the air pumping pipe. After the inflation is completed, when the reading on the pressure gauge exceeds 30MPa, it is necessary to loosen the air bleed screw 11. At this time, the high-pressure gas is discharged from the high-pressure gas outlet B16-2 through the air bleed hole 13-2 to relieve the pressure, and then the air pumping pipe can be removed.

[0041] The present invention is characterized by:

[0042] 1. The air is filtered before intake, which reduces the particulate impurities in the air and increases the service life.

[0043] 2. It adopts polytetrafluoroethylene and polyimide composite materials, which have high temperature resistance, high lubrication and non-stickiness, excellent sealing, good anti-aging ability, extremely low friction coefficient and non-flammability, which further improves the service life. It does not need to use lubricating oil. It will not spontaneously combust under high temperature and high pressure environment, which improves safety and does not produce sludge. It has fast air discharge, improves the inflation efficiency, and greatly reduces the maintenance frequency.

[0044] 3. Due to the use of oil-free lubrication, the output air is clean and pure and can be used directly for breathing.

[0045] 4. The first-stage piston adopts a two-way piston diaphragm and two one-way valves A, making the structure compact, novel and reasonable.

[0046] 5. The cylinder pipe is directly connected to the base, and the ultra-high pressure check valve B is installed in the base. If the ultra-high pressure check valve B fails, just loosen the plug and tighten the screws to eliminate the fault or replace it. The maintenance is very convenient, and it saves materials and reduces costs.

[0047] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A high-performance ultra-high-pressure air pump, comprising a pedal (1), a handle assembly (2), and a pressure gauge (20), characterized in that: A base (16) is provided in the middle of the pedal (1), and a filter (10) is vertically connected to the air inlet A (1-1) end of the pedal (1); a plug (15), a tightening screw (14), a one-way valve seat (18), and a three-stage cylinder pipe (8) are provided in sequence from bottom to top in the middle of the base (16); the outer ring of the upper part of the base (16) is connected to the first-stage cylinder pipe (6) through a thread, and a one-way valve B (30) is symmetrically provided on the upper part of the base (16); a venting joint (13) is connected to one side of the base (16) through a thread, and an air pumping pipe is connected to the inside of the high-pressure gas outlet A (16-1) on the other side through a thread; The high-pressure gas outlet A (16-1) is also connected to a pressure gauge (20); a second-stage fixed piston (5) is connected to the small outer circle at the upper end of the third-stage cylinder tube (8) through a thread; a push rod (4) is arranged in the hole of the third-stage cylinder tube (8); a third-stage piston male copper head (24) is connected to the lower end of the push rod (4); a third-stage piston (23) is sleeved on the third-stage piston male copper head (24); a third-stage piston female copper head (21) fastens the third-stage piston (23) to the third-stage piston male copper head (24); a third-stage piston male copper head (24) is arranged in the lower end hole of the third-stage piston male copper head (24) An ultra-high pressure one-way valve B (19) is arranged, and a sealing ring D (22) is arranged in a cavity formed by the third-stage piston (23) and the third-stage piston male copper head (24) at the upper end of the third-stage piston female copper head (21); the upper end of the push rod (4) passes through the second-stage fixed piston (5) and is connected to the handle assembly (2) through a rivet pin (3); the lower end of the handle assembly (2) is fixedly connected to the second-stage cylinder tube (7), and the outer ring of the lower end of the second-stage cylinder tube (7) is connected to the first-stage piston (9) through a thread; the upper end of the first-stage cylinder tube (6) is connected to the first-stage air chamber cover (28); The primary piston (9) comprises a primary piston seat (9-4), a bidirectional piston diaphragm (9-1), a tertiary pressure plate (9-2), two one-way valves A (9-3), a sealing ring E (9-5), and a plurality of fastening screws A (9-6). The tertiary pressure plate (9-2) fastens the bidirectional piston diaphragm (9-1) to the bottom surface of the primary piston seat (9-4) via the plurality of fastening screws A (9-6). The primary piston (9) is symmetrically provided with one-way valves A (9-3). The one-way valves A (9-3) are communicated with a secondary air chamber (26) formed by the secondary cylinder pipe (7) and the tertiary cylinder pipe (8). The threaded connection end of the primary piston seat (9-4) and the secondary cylinder pipe (7) is provided with a sealing ring E (9-5) to prevent air from entering the primary air chamber (27) formed by the primary cylinder pipe (6) and the secondary cylinder pipe (7).

2. A high performance ultra-high pressure air pump according to claim 1, characterized in that: The secondary fixed piston (5) comprises a secondary fixed piston seat (5-1), an upper cover A (5-2), a one-way piston diaphragm (5-3), a sealing ring A (5-4), a secondary pressure plate (5-5) and a sealing ring B (5-6); the secondary fixed piston seat (5-1) sequentially fastens the upper cover A (5-2), the one-way piston diaphragm (5-3) and the secondary pressure plate (5-5) to the upper small outer circle of the tertiary cylinder tube (8); a sealing ring B (5-6) is provided between the outer ring of the secondary pressure plate (5-5) and the one-way piston diaphragm (5-3).

3. A high performance ultra-high pressure air pump according to claim 1, characterized in that: The bidirectional piston diaphragm (9-1) in the first-stage piston (9) is provided with a large-diameter diaphragm matching the inner diameter of the first-stage cylinder tube (6) and a small-diameter diaphragm matching the outer diameter of the third-stage cylinder tube (8), thereby simultaneously changing the pressure in the first-stage air chamber (27) and the second-stage air chamber (26).

4. A high performance ultra-high pressure air pump according to claim 1, characterized in that: A retaining ring (29) is provided on the upper portion of the base (16) for limiting the one-way valve B (30) from popping up upwards.

5. A high performance ultra-high pressure air pump according to claim 1, characterized in that: The base (16) is symmetrically provided with an "L"-shaped air inlet B (16-3) at the top, and a high-pressure air outlet A (16-1) and a high-pressure air outlet B (16-2) are respectively provided in left and right directions at the bottom.

6. A high performance ultra-high pressure air pump according to claim 1, characterized in that: An air inlet hole A (7-1) is provided at the upper portion of the secondary cylinder tube (7).

7. A high performance ultra-high pressure air pump according to claim 1, characterized in that: The third-stage piston male copper head (24) is provided with an air inlet hole B (24-1).

8. A high performance ultra-high pressure air pump according to claim 1, characterized in that: The outside of the air venting joint (13) is connected to a air venting screw (11), and a sealing ring C (12) is provided at the connection between the inner end of the air venting screw (11) and the air venting joint (13).

9. A high performance ultra-high pressure air pump according to claim 1 or 7, characterized in that: The air release joint (13) is provided with a high-pressure air outlet A (13-1) in the horizontal direction, and a plurality of air release holes (13-2) are provided on the outer circle.

10. A high performance ultra-high pressure air pump according to claim 1, characterized in that: The bidirectional piston diaphragm (9-1) and the three-stage piston (23) are made of polytetrafluoroethylene and polyimide composite materials.

11. A high performance ultra-high pressure air pump according to claim 2, characterized in that: The one-way piston diaphragm (5-3) is made of a composite material of polytetrafluoroethylene and polyimide.

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