阅读说明：本技术 便携式气焊制氧机 (Portable gas welding oxygen generator ) 是由 王宗振 谢霞 孙伟 翟乃哲 于 2020-07-28 设计创作，主要内容包括：本发明涉及一种便携式气焊制氧机,包括U型的底壳、顶壳、侧边壳,底壳内底部设有分子筛集成塔和压缩机,底壳上部一侧壁上设有进气口,进气口内设有可拆卸空气过滤器,压缩机的出口连接调压阀,调压阀出口连接分子筛集成塔,分子筛集成塔包括集成吸附塔A、吸附塔B、氧气储罐为一体的集成塔体,吸附塔A和吸附塔B分别设置在氧气储罐的两侧,集成塔体的顶部设有上端盖,集成塔体的底部设有下端盖,上端盖上设有气管一、气管二,气管三,下端盖上设有气管四、气管五,气管六。本发明方便携带、随时通电3分钟即可使用、便宜高效,吸附塔A、吸附塔B和氧气储罐集成在一起,体积小、成本低,方便携带,方便生产安装及售后维修更换。(The invention relates to a portable gas welding oxygen generator which comprises a U-shaped bottom shell, a top shell and side shells, wherein a molecular sieve integration tower and a compressor are arranged at the bottom in the bottom shell, an air inlet is formed in one side wall of the upper part of the bottom shell, a detachable air filter is arranged in the air inlet, the outlet of the compressor is connected with a pressure regulating valve, the outlet of the pressure regulating valve is connected with the molecular sieve integration tower, the molecular sieve integration tower comprises an integration tower body integrating an adsorption tower A, an adsorption tower B and an oxygen storage tank into a whole, the adsorption tower A and the adsorption tower B are respectively arranged on two sides of the oxygen storage tank, an upper end cover is arranged at the top of the integration tower body, a lower end cover is arranged at the bottom of the integration tower body, a first air pipe, a second air. The invention is convenient to carry, can be used after being electrified for 3 minutes at any time, is cheap and efficient, integrates the adsorption tower A, the adsorption tower B and the oxygen storage tank together, has small volume and low cost, is convenient to carry, and is convenient to produce, install, maintain and replace after sale.)

1. The utility model provides a portable gas welding oxygenerator which characterized in that: bottom shell (1) including the U type, there are top shell (15) at the top of bottom shell (1) through the bolt fastening, there are side shell (17) both sides of bottom shell (1) through the bolt fastening, bottom is equipped with molecular sieve integration tower (2) and compressor (6) in bottom shell (1), be equipped with air inlet (9) on a lateral wall of bottom shell (1) upper portion, be equipped with in air inlet (9) and dismantle air cleaner (8), exit linkage air-vent valve (5) of compressor (6), air-vent valve (5) exit linkage molecular sieve integration tower (2), air inlet (9) of compressor (6) are connected to the gas outlet of air cleaner (8), be fixed with radiator fan (7) that blow towards compressor (6) on side shell (17) of one side, be equipped with louvre (12) on bottom shell (1) and side shell (17), molecular sieve integration tower (2) are including integrated adsorption tower A (2-10), The integrated tower body is characterized in that the adsorption tower B (2-2) and the oxygen storage tank (2-5) are integrated into a whole, the adsorption tower A (2-10) and the adsorption tower B (2-2) are respectively arranged on two sides of the oxygen storage tank (2-5), the top of the integrated tower body is provided with an upper end cover (2-1), the bottom of the integrated tower body is provided with a lower end cover (2-9), the upper end cover (2-1) is provided with a first air pipe, a second air pipe and a third air pipe which are respectively communicated with the adsorption tower A (2-10), the adsorption tower B (2-2) and the oxygen storage tank (2-5), and the lower end cover (2-9) is provided with a fourth air pipe, a fifth air pipe and a sixth air pipe which are respectively communicated with the adsorption tower A (2-10), the adsorption tower B (2.

2. The portable gas welding oxygen generator of claim 1, wherein: the air pipe III is connected with an oxygen outlet pipe (2-16), the air pipe III is connected with a first guide pipe (2-7), the air pipe II is connected with a second guide pipe (2-3), a balance valve is connected between the upper parts of the first guide pipe (2-7) and the second guide pipe (2-3), a back-flushing valve (2-15) is connected between the lower parts of the first guide pipe (2-7) and the second guide pipe (2-3), a one-way valve (2-14) is fixed at the bottom end of the first guide pipe (2-7) and the second guide pipe (2-3), the lower end of the one-way valve (2-14) is connected with a three-way pipe, the other end of the three-way pipe is connected with a sixth air pipe, the fourth air pipe is connected with a first connecting pipe (2-11), the fifth air pipe is connected with a second connecting pipe (2-8), the outer side of, the air inlet pipe (2-12) is connected with an air outlet of the pressure regulating valve (5), an air outlet is arranged on the four-way valve (2-13), an air outlet I and an air outlet II are arranged on the four-way valve (2-13), the air outlet I is communicated with the connecting pipe I (2-11), and the air outlet II is communicated with the connecting pipe II (2-8).

3. The portable gas welding oxygen generator of claim 2, wherein: the back-flushing valves (2-15) are high-frequency valves.

4. The portable gas welding oxygen generator of claim 2, wherein: the balance valve comprises a plastic pipe (2-4), a copper core (2-17) is arranged in an inner hole of the plastic pipe (2-4) in an interference fit mode, and a needle hole (2-18) with the diameter not larger than 1.5 mm is formed in the copper core (2-17).

5. The portable gas welding oxygen generator of claim 4, wherein: the number of the copper cores (2-17) is two, and a gap is reserved between the two copper cores (2-17).

6. The portable gas welding oxygen generator of claim 2, wherein: the exhaust port is connected with a nitrogen discharging silencer (3) through an exhaust pipe (2-6), the nitrogen discharging silencer (3) comprises a square hollow shell (3-1), the shell (3-1) is divided into two groups of air distribution chambers (3-8), air guide chambers (3-7) and tail air chambers (3-6) by criss-cross partition plates (3-3), the two groups of air guide chambers (3-7) are respectively communicated with two sides of the air distribution chambers (3-8), each group of air guide chambers (3-7) is composed of a plurality of communicated air guide single chambers, the air guide single chambers are sequentially communicated, the air guide single chamber at the front end is provided with an opening (3-5) communicated with the air distribution chambers (3-8), the air guide single chamber at the rear end is provided with an opening (3-5) communicated with the tail air chambers (3-6), a plurality of small air outlet holes (3-2) are arranged in each air guide single chamber and each tail air chamber (3-6), the number of the small air outlet holes (3-2) from the air guide single chamber at the front end to the tail air chambers (3-6) is gradually increased, a baffle (3-4) enabling air to travel in a curve is arranged in each air guide single chamber and each air distribution chamber (3-8), an air inlet pipe is arranged on the left side of each air distribution chamber (3-8), and the air inlet pipe is connected with an exhaust pipe (2-6).

7. The portable gas welding oxygen generator of claim 6, wherein: the shell (3-1), the partition plate (3-3), the mounting seat, the air inlet pipe and the baffle plate (3-4) are integrally formed by injection molding.

8. The portable gas welding oxygen generator of claim 1, wherein: a replacement closing plate (11) is fixed at an air inlet (9) of the bottom shell (1) through screws, a strip-shaped air inlet hole (10) is formed in the replacement closing plate (11), damping rubber columns (14) are fixed at four corners of the bottom shell (1), damping springs are wrapped in the damping rubber columns (14), and the tops of the damping springs are fixed with the bottom shell (1).

9. The portable gas welding oxygen generator of claim 6, wherein: a pressure regulating support (4) is fixed on the inner wall of the upper part of one side of the bottom shell (1), the pressure regulating support (4) is fixed with a pressure regulating valve (5), and a control switch (13) is arranged on one side of the bottom shell (1).

10. The portable gas welding oxygen generator of claim 9, wherein: a lifting handle (16) is fixed in the middle of the top shell (15), a pressure gauge (18) connected with the air outlet of the pressure regulating valve (5) is fixed on the outer side of the upper part of one side of the bottom shell (1), an oxygen outlet (19) is arranged on the lower part of one side of the bottom shell (1), and the oxygen outlet (19) is connected with oxygen outlet pipes (2-16).

Technical Field

The invention relates to a portable gas welding oxygen generator, and belongs to the technical field of oxygen generation equipment.

Background

When the existing gas welding machine uses oxygen, the oxygen is bought in a bottle or taken to fill the bottle, so that the carrying and the use are inconvenient, and some molecular sieve oxygen generators separate and prepare the oxygen from the air by adopting the adsorption characteristic of a molecular sieve at normal temperature. Generally, a Pressure Swing adsorption separation technology is adopted, namely PSA Pressure Swing adsorption, in a current molecular sieve oxygen generation system, a molecular sieve adsorption tower and an oxygen storage tank are necessary devices, a molecular sieve in the adsorption tower adsorbs nitrogen to separate oxygen, and the oxygen is stored in the oxygen storage tank, but the current adsorption tower and the oxygen storage tank are independently placed, so that the size is large, the occupied area is large, and the carrying and the use are inconvenient.

Disclosure of Invention

The invention aims to provide a portable gas welding oxygenerator, which solves the problems of large volume, portability and inconvenient use of the conventional oxygen bottle or oxygenerator.

The invention relates to a portable gas welding oxygen generator, which comprises a U-shaped bottom shell, wherein the top of the bottom shell is fixedly provided with a top shell through bolts, two sides of the bottom shell are fixedly provided with side shells through bolts, the bottom in the bottom shell is provided with a molecular sieve integration tower and a compressor, one side wall of the upper part of the bottom shell is provided with an air inlet, a detachable air filter is arranged in the air inlet, the outlet of the compressor is connected with a pressure regulating valve, the outlet of the pressure regulating valve is connected with the molecular sieve integration tower, the air outlet of the air filter is connected with the air inlet of the compressor, the side shell of one side is fixedly provided with a heat radiation fan blowing towards the compressor, the bottom shell and the side shells are provided with heat radiation holes, the molecular sieve integration tower comprises an integration absorption tower A, an absorption tower B and an oxygen storage tank which are integrated into a whole, a tower body is formed by stretching an, the bottom of the integrated tower body is provided with a lower end cover, the upper end cover is provided with a first air pipe, a second air pipe and a third air pipe, the first air pipe, the second air pipe and the third air pipe are respectively communicated with the adsorption tower A, the adsorption tower B and the oxygen storage tank, and the lower end cover is provided with a fourth air pipe, a fifth air pipe and a sixth air pipe, the fourth air pipe, the fifth air pipe and the sixth air pipe are respectively communicated with.

Preferably, the air pipe III is connected with an oxygen outlet pipe, the air pipe I is connected with the guide pipe I, the air pipe II is connected with the guide pipe II, a balance valve is connected between the upper parts of the guide pipe I and the guide pipe II, a back-blowing valve is connected between the lower parts of the guide pipe I and the guide pipe II, a one-way valve is fixed at the bottom ends of the guide pipe I and the guide pipe II, the lower end of the one-way valve is connected with a three-way pipe, the other end of the three-way pipe is connected with an air pipe VI, the air pipe IV is connected with a connection pipe I, the air pipe V is connected with a connection pipe II, a four-way valve is arranged on the outer side of the integrated tower body, an air inlet. The back flushing device and the balancing device can continuously and efficiently produce high-concentration oxygen with quality and quantity guaranteed.

Preferably, the blowback valve is a high frequency valve. The high frequency valve opens and closes to control the gas flow direction. The four-way valve is a two-position diaphragm four-way valve, the four-way valve and the high-frequency valve can be connected with a single chip microcomputer, and the single chip microcomputer is connected with a pressure regulating valve and a compressor to complete automatic control.

Preferably, the balance valve comprises a plastic pipe, a copper core is in interference fit in the inner hole of the plastic pipe, and a pinhole with the diameter not more than 1.5 mm is arranged on the copper core. The pressure balance between the adsorption column a and the adsorption column B can be maintained. Prevent the molecular sieve in the adsorption tower from being damaged due to too large pressure difference.

Preferably, the number of the copper cores is two, and a gap exists between the two copper cores.

Preferably, the gas vent is connected with the nitrogen discharging silencer through the exhaust pipe, the nitrogen discharging silencer comprises a square hollow shell, the shell is internally divided into a gas distribution chamber by a criss-cross partition plate, the gas guide chambers and a tail gas chamber, the gas guide chambers are provided with two groups, the two groups of gas guide chambers are respectively communicated with two sides of the gas distribution chamber, each group of gas guide chambers is composed of a plurality of gas guide single chambers which are communicated, the gas guide single chambers are sequentially communicated, the gas guide single chamber at the front end is provided with an opening communicated with the gas distribution chamber, the gas guide single chamber at the rear end is provided with an opening communicated with the tail gas chamber, a plurality of gas outlet holes are formed in each gas guide single chamber and the tail gas chamber, the number of the gas outlet holes from the gas guide single chamber at the front end to the tail gas outlet chamber is gradually increased, a baffle plate for enabling. Because there is certain pressure during gas vent discharge nitrogen gas, if there is not the muffler can produce very big sound, square structure is easy to assemble, be equipped with the gas distribution chamber in the casing, gas guide chamber and tail gas chamber, then the cooperation baffle makes the interior airflow walk the tortuous and admit air, the make full use of space, reduce the volume, two sets of gas guide chambers, can differentiate the gas that gets into in the muffler, and the baffle can reduce gaseous velocity of flow, thereby for gaseous decompression, the noise cancelling effect is better, the aperture of giving vent to anger is along with the passageway of admitting air, from the inlet end to the end of giving vent to anger and increase gradually, the sound of arranging nitrogen has been reduced.

Preferably, a mounting seat is fixed on the outer side wall of the shell, and a mounting hole is formed in the mounting seat, so that the mounting seat is conveniently mounted on the integrated tower body. The shell, the partition plate, the mounting seat, the air inlet pipe and the baffle are integrally formed through injection molding, manufacturing is convenient, and manufacturing procedures are saved.

The air inlet of the bottom shell is fixedly provided with a replacement closing plate through screws, the replacement closing plate is provided with strip-shaped air inlet holes, four corners of the bottom shell are fixedly provided with damping rubber columns, damping springs are wrapped in the damping rubber columns, and the tops of the damping springs are fixed with the bottom shell. Conveniently change air cleaner, and the shock attenuation effect is better.

A pressure regulating bracket is fixed on the inner wall of the upper part of one side of the bottom shell, the pressure regulating bracket is fixed with a pressure regulating valve, and a control switch is arranged on one side of the bottom shell.

The middle part of the top shell is fixed with a handle, the outer side of the upper part of one side of the bottom shell is fixed with a pressure gauge connected with the gas outlet of the pressure regulating valve, the pressure for preventing the entering is too large, the lower part of one side of the bottom shell is provided with an oxygen outlet, and the oxygen outlet is connected with an oxygen outlet pipe. The welding machine is convenient to connect.

The invention has the following beneficial effects:

the portable oxygen absorption tower is convenient to carry, can be used after being electrified for 3 minutes at any time, is cheap and efficient, is integrated with the oxygen storage tank, has small volume and low cost, is convenient to carry, and is convenient to produce, install, maintain and replace after sale.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic structural diagram of a molecular sieve integrated column;

fig. 4 is a schematic cross-sectional view of an integrated tower body;

FIG. 5 is a schematic view of the structure of the nitrogen discharging silencer;

FIG. 6 is a schematic structural view of a balancing valve;

in the figure: 1. a bottom shell, 2, a molecular sieve integration tower, 2-1, an upper end cover, 2-2, an adsorption tower B, 2-3, a second conduit, 2-4, a plastic pipe, 2-5, an oxygen storage tank, 2-6, an exhaust pipe, 2-7, a first conduit, 2-8, a second connecting pipe, 2-9, a lower end cover, 2-10, an adsorption tower A, 2-11, a first connecting pipe, 2-12, an air inlet pipe, 2-13, a four-way valve, 2-14, a one-way valve, 2-15, a back-flushing valve, 2-16, an oxygen outlet pipe, 2-17, a copper core, 2-18, a pinhole, 3, a nitrogen discharge silencer, 3-1, a shell, 3-2, an air outlet pinhole, 3-3, a partition, 3-4, a baffle, 3-5, an opening, 3-6, 3-7 parts of tail gas chamber, 3-8 parts of air guide chamber, 4 parts of air distribution chamber, 5 parts of pressure regulating support, 6 parts of pressure regulating valve, 7 parts of compressor, 7 parts of cooling fan, 8 parts of air filter, 9 parts of air inlet, 10 parts of strip-shaped air inlet hole, 11 parts of replacement closing plate, 12 parts of heat dissipation hole, 13 parts of control switch, 14 parts of damping rubber column, 15 parts of top shell, 16 parts of lifting handle, 17 parts of side shell, 18 parts of pressure gauge, 19 parts of oxygen outlet.

Detailed Description

The present invention will be further described with reference to the following examples.

As shown in fig. 1 to 6, the invention is a portable gas welding oxygen generator, comprising a U-shaped bottom case 1, a top case 15 fixed on the top of the bottom case 1 through bolts, side cases 17 fixed on both sides of the bottom case 1 through bolts, a molecular sieve integration tower 2 and a compressor 6 arranged on the bottom of the bottom case 1, an air inlet 9 arranged on one side wall of the upper part of the bottom case 1, a detachable air filter 8 arranged in the air inlet 9, a pressure regulating valve 5 connected to the outlet of the compressor 6, a molecular sieve integration tower 2 connected to the outlet of the pressure regulating valve 5, an air outlet of the air filter 8 connected to the air inlet 9 of the compressor 6, a heat dissipation fan 7 fixed on the side case 17 on one side and blowing against the compressor 6, heat dissipation holes 12 arranged on the bottom case 1 and the side cases 17, the molecular sieve integration tower 2 comprising an integration tower body integrating an adsorption tower a2-10, an adsorption tower B35, the adsorption tower A2-10 and the adsorption tower B2-2 are respectively arranged at two sides of the oxygen storage tank 2-5, the top of the integrated tower body is provided with an upper end cover 2-1, the bottom of the integrated tower body is provided with a lower end cover 2-9, the upper end cover 2-1 is provided with a first air pipe, a second air pipe and a third air pipe which are respectively communicated with the adsorption tower A2-10, the adsorption tower B2-2 and the oxygen storage tank 2-5, and the lower end cover 2-9 is provided with a fourth air pipe, a fifth air pipe and a sixth air pipe which are respectively communicated with the adsorption tower A2-10, the adsorption tower B2-2 and the oxygen storage tank 2-.

The air pipe III is connected with an oxygen outlet pipe 2-16, the air pipe III is connected with a first guide pipe 2-7, the air pipe II is connected with a second guide pipe 2-3, a balance valve is connected between the upper parts of the first guide pipe 2-7 and the second guide pipe 2-3, a back flushing valve 2-15 is connected between the lower parts of the first guide pipe 2-7 and the second guide pipe 2-3, a one-way valve 2-14 is fixed at the bottom end of the first guide pipe 2-7 and the second guide pipe 2-3, the lower end of the one-way valve 2-14 is connected with a three-way pipe, the other end of the three-way pipe is connected with a sixth air pipe, the air pipe IV is connected with a first connecting pipe 2-11, the air pipe V is connected with a second connecting pipe 2-8, a four-way valve 2-13 is arranged, the four-way valve 2-13 is provided with an air outlet, the four-way valve 2-13 is provided with a first air outlet and a second air outlet, the first air outlet is communicated with the first connecting pipe 2-11, and the second air outlet is communicated with the second connecting pipe 2-8.

The back-flushing valves 2-15 are high-frequency valves.

The balance valve comprises a plastic pipe 2-4, a copper core 2-17 is in interference fit in an inner hole of the plastic pipe 2-4, and a pinhole 2-18 with the diameter not more than 1.5 mm is arranged on the copper core 2-17.

Two copper cores 2-17 are arranged, and a gap is reserved between the two copper cores 2-17.

The exhaust port is connected with a nitrogen discharging silencer 3 through an exhaust pipe 2-6, the nitrogen discharging silencer 3 comprises a square hollow shell 3-1, the shell 3-1 is divided into a gas distribution chamber 3-8, a gas guide chamber 3-7 and a tail gas chamber 3-6 by a criss-cross partition plate 3-3, two groups of gas guide chambers 3-7 are arranged, the two groups of gas guide chambers 3-7 are respectively communicated with two sides of the gas distribution chamber 3-8, each group of gas guide chambers 3-7 is composed of a plurality of communicated gas guide single chambers, the gas guide single chambers are sequentially communicated, the gas guide single chamber at the front end is provided with an opening 3-5 communicated with the gas distribution chamber 3-8, the gas guide single chamber at the rear end is provided with an opening 3-5 communicated with the tail gas chamber 3-6, a plurality of gas outlet holes 3-2 are arranged in each gas guide single chamber and the tail gas chamber 3-6, the number of the gas outlet holes 3-2 from the gas guide, a baffle plate 3-4 for enabling the gas to travel in a curve is arranged in each gas guiding single chamber and each gas distribution chamber 3-8, and a gas inlet pipe is arranged on the left side of each gas distribution chamber 3-8 and is connected with a gas exhaust pipe 2-6.

The shell 3-1, the partition plate 3-3, the mounting seat, the air inlet pipe and the baffle plate 3-4 are integrally formed by injection molding.

A replacement closing plate 11 is fixed at the air inlet 9 of the bottom shell 1 through screws, a strip-shaped air inlet 10 is arranged on the replacement closing plate 11, damping rubber columns 14 are fixed at four corners of the bottom shell 1, damping springs are wrapped in the damping rubber columns 14, and the tops of the damping springs are fixed with the bottom shell 1.

A pressure regulating support 4 is fixed on the inner wall of the upper part of one side of the bottom shell 1, the pressure regulating support 4 is fixed with a pressure regulating valve 5, and a control switch 13 is arranged on one side of the bottom shell 1.

A handle 16 is fixed in the middle of the top shell 15, a pressure gauge 18 connected with the air outlet of the pressure regulating valve 5 is fixed on the outer side of the upper part of one side of the bottom shell 1, an oxygen outlet 19 is arranged on the lower part of one side of the bottom shell 1, and the oxygen outlet 19 is connected with oxygen outlet pipes 2-16.

When in use, the compressor 6 pumps air at the air inlet 9 into the air filter 8 for filtering, then the air is sent into the air inlet pipe 2-12 to enter the molecular sieve integration tower 2 after the pressure is adjusted by the pressure adjusting valve 5, the four-way valve 2-13 is started, the air inlet is communicated with the first air outlet, the air inlet is closed with the second air outlet, the second air outlet is communicated with the exhaust port, then the molecular sieve in the adsorption tower A2-10 is used for adsorbing nitrogen, the air enters the air pipe IV through the connecting pipe I2-11, then enters the bottom of the adsorption tower A2-10, then the nitrogen is adsorbed by the molecular sieve in the adsorption tower A2-10, thereby separating oxygen, the oxygen is discharged from the first air pipe at the top and enters the guide pipe I2-7, wherein a small part of the oxygen enters the air pipe II through the needle hole on the balance valve and then enters the adsorption tower B2-, more oxygen passes through the one-way valve 2-14 and the three-way pipe, then enters the air pipe six to enter the bottom of the oxygen storage tank 2-5, then flows upwards, flows out of the air pipe and enters the oxygen outlet pipe 2-16 for use; after a period of time, the molecular sieve in the adsorption tower absorbs more nitrogen, the adsorption capacity is reduced, at this time, the oxygen in the first guide pipe 2-7 contains nitrogen, the blowback valve 2-13 can be opened, the oxygen enters the second guide pipe 2-3 from the first guide pipe 2-7, part of the gas enters the upper part of the adsorption tower B2-2 through the second air pipe, the nitrogen remained in the molecular sieve used last time is blowback, the blowback nitrogen enters the second connecting pipe 2-8 through the fifth air pipe, and then enters the nitrogen discharging silencer 3 through the air outlet second of the four-way valve 2-13 to be discharged. After being used for a period of time, the four-way valve 2-13 can be started, the air inlet is communicated with the second air outlet, the air inlet is closed with the first air outlet, the first air outlet is communicated with the air outlet, at the moment, the molecular sieve in the adsorption tower B2-2 is used for adsorbing nitrogen, air enters the air pipe five through the connecting pipe two 2-8, then enters the bottom of an adsorption tower B2-2, and then adsorbs nitrogen through a molecular sieve in the adsorption tower B2-2, thereby separating oxygen, the oxygen is discharged from a second air pipe at the top and enters a second guide pipe, wherein a small part of the oxygen enters the second air pipe through the needle hole on the balance valve and then enters the adsorption tower A2-10 to keep the balance of the two adsorption towers, more oxygen passes through the one-way valve 2-14 and the three-way pipe, then enters an air pipe six to enter the bottom of the oxygen storage tank 2-5, and then flows upwards to flow out of the air pipe and enter an oxygen outlet pipe for use; after a period of time, the molecular sieve in the adsorption tower absorbs more nitrogen, the adsorption capacity is reduced, at this time, oxygen in the second conduit contains nitrogen, the blowback valve 2-13 can be opened, oxygen enters the first conduit from the second conduit, a part of the gas enters the upper part of the adsorption tower A2-10 through the first air pipe, blowback is carried out on the nitrogen which is remained in the last time of the molecular sieve, the nitrogen which is blown back enters the first connecting pipe 2-11 through the fourth air pipe, and then enters the nitrogen discharging silencer 3 through the first air outlet of the four-way valve 2-13 and is discharged from the air outlet.

When the nitrogen-discharging silencer 3 is used, gas discharged by the molecular sieve enters the gas distribution chamber 3-8 in the shell from the rubber hose, is divided into two gas flows and enters the gas guide chambers 3-7 on two sides, sequentially passes through each gas guide single chamber in the gas guide chambers 3-7, reduces the flow velocity through the baffles 3-4 in the gas guide single chambers, then enters the tail gas chambers 3-6, and in the process, the gas is subjected to nitrogen-discharging silencing through the gas outlet small holes 3-2.

When the nitrogen discharging silencer is fixedly installed, the nitrogen discharging silencer passes through the installation hole in the installation seat of the nitrogen discharging silencer 3 through a screw and then is fixed on the inner side wall of the bottom shell.

In conclusion, the portable oxygen storage tank is convenient to carry, can be used after being electrified for 3 minutes at any time, is cheap and efficient, is integrated with the adsorption tower A, the adsorption tower B and the oxygen storage tank, is small in size, low in cost and convenient to carry, is convenient to produce, install, maintain and replace after sales, and can continuously and efficiently produce high-concentration oxygen with guaranteed quality and quantity through the back flushing device and the balancing device.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.