Integrated adsorption tower of oxygen generator

Abstract

The integrated adsorption tower of the oxygen generator comprises an adsorption tower main body, a gas inlet integrated cover part and a gas outlet integrated cover part which are arranged at the two ends of the adsorption tower main body, and a reversing valve arranged on the gas inlet integrated cover part, two molecular sieve cylinders and two air storage tanks are arranged in the adsorption tower main body, the nitrogen removal and noise reduction cylinder is positioned in the middles of the two molecular sieve cylinders and the two air storage tanks, the molecular sieve cylinders are communicated with the air storage tanks, the molecular sieve cylinders can be communicated with the nitrogen removal and noise reduction cylinder under the control of a reversing valve, the reversing valve controls air to alternately enter and remove nitrogen, the molecular sieve cylinders are filled with adsorbents, and the adsorbents are communicated with the nitrogen removal and noise reduction cylinder. The two molecular sieve barrels are integrated on one adsorption tower, so that the assembly difficulty is reduced, the production efficiency is improved, the space utilization rate is improved, and the nitrogen discharge noise is reduced by arranging the silencing barrel.

Description

Technical Field

[0001] The present invention relates to the technical field related to oxygen production, and in particular to an integrated adsorption tower for an oxygen generator. Background Art

[0002] Most of the oxygen generators commonly used in the market are molecular sieve oxygen generators, which generally adopt a cycle of pressurized adsorption and reduced pressure desorption, so that compressed air alternately enters the adsorption tower to achieve oxygen and nitrogen separation, thereby continuously producing high-purity oxygen.

[0003] Generally, oxygen generators use two independent adsorption towers. The traditional method has the following disadvantages: 1. The two adsorption towers are separated, and the parameters are difficult to adjust consistently, resulting in low working efficiency; 2. The two adsorption towers need to be combined into one by a connector, which requires more assembly space to be reserved, and the number of parts is large, the assembly is complicated, and the installation is inconvenient; for example, in the Chinese utility model with publication number CN221015274U, an oxygen generator adsorption tower device is disclosed, which is to set up two adsorption towers for oxygen production, has many parts, complex pipelines, troublesome assembly, and a large assembly space.

[0004] Moreover, the noise of the PSA oxygen generator is mainly low-frequency noise, and its sound sources mainly include the following aspects: intake noise, exhaust noise and compressor noise, among which exhaust noise is the most obvious. At the exhaust pipe mouth, high-speed airflow is ejected from the pipe, impacting and shearing the surrounding static air, causing violent airflow disturbance near the nozzle, thereby generating aerodynamic noise with a high sound level, forming exhaust jet noise, which is the noise source with the highest sound level. The exhaust silencer of the traditional oxygen generator is usually connected to the nitrogen outlet of the adsorption tower through a pipe, and the noise is not eliminated in time, resulting in a loud noise. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated adsorption tower for an oxygen generator, which reduces the difficulty of assembly and assembling and improves the oxygen production efficiency.

[0006] To achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an integrated adsorption tower for an oxygen generator, comprising an adsorption tower body, an air inlet integrated cover component and an air outlet integrated cover component installed at both ends of the adsorption tower body, and a reversing valve installed on the air inlet integrated cover component, wherein a molecular sieve cartridge, a gas storage tank, and a nitrogen exhaust silencer are arranged in the adsorption tower body; wherein the molecular sieve cartridge is connected to the gas storage tank, and the molecular sieve cartridge can be connected to the nitrogen exhaust silencer through the control of the reversing valve, and the molecular sieve cartridge is filled with an adsorbent.

[0007] Beneficial effect: the adsorption tower is divided into four main parts, which is convenient for disassembly and installation, and is provided with a nitrogen exhaust silencer, which can reduce the exhaust noise when the adsorption tower is exhausted.

[0008] According to a further technical solution, at least two molecular sieve cylinders are provided and are arranged on both sides of the nitrogen exhaust silencer cylinder.

[0009] Beneficial effect: the two molecular sieve cylinders can perform oxygen production operations alternately to improve oxygen production efficiency.

[0010] According to a further technical solution, at least one gas storage tank is provided, and the gas storage tank is located on one side of the nitrogen exhaust silencer.

[0011] According to a further technical solution, an air inlet passage and a nitrogen exhaust passage are provided on the air inlet integrated cover component, wherein the air inlet passage is used to introduce compressed air into the molecular sieve cylinder, and the nitrogen exhaust passage is used to exhaust the gas in the molecular sieve cylinder into the nitrogen exhaust silencer cylinder.

[0012] A further technical solution is that two molecular sieve cartridges are provided, and the air intake integrated cover component includes an air intake cover, and two air intake molecular sieve cartridge cavities are provided on the air intake cover, and the two air intake molecular sieve cartridge cavities are respectively covered on the two molecular sieve cartridges, and the two air intake molecular sieve cartridge cavities are respectively connected with the two molecular sieve cartridges, and a nitrogen inlet is provided on the air intake cover, and the nitrogen inlet is located between the two air intake molecular sieve cartridge cavities and is connected with the nitrogen exhaust silencer, and a first gas storage cavity and a second gas storage cavity are provided on the air intake cover, and the first gas storage cavity and the second gas storage cavity are located on both sides of the nitrogen inlet and are connected with the gas storage tank.

[0013] A further technical solution is that a valve seat is fixed on the air inlet cover, the air inlet passage includes a first air inlet hole and a second air inlet hole opened on the valve seat, the nitrogen exhaust channel is an exhaust hole arranged on the valve seat, the exhaust hole is connected to the nitrogen inlet, and two air inlet channels are arranged on the air inlet cover, the first air inlet hole and the second air inlet hole are respectively connected to two air inlet molecular sieve cylinder cavities through the two air inlet channels.

[0014] Beneficial effect: the air intake pipe of the air intake part is integrated on the air intake cover, which reduces the number of parts, facilitates subsequent installation, and reduces assembly difficulty.

[0015] According to a further technical solution, the gas outlet integrated cover component is provided with an oxygen storage channel for connecting the molecular sieve cylinder and the gas storage tank, and the gas outlet integrated cover component is provided with a connecting passage on the side away from the adsorption tower body, and the connecting passage is used to connect at least two of the molecular sieve cylinders.

[0016] In a further technical solution, two molecular sieve cartridges are provided, the gas outlet integrated cover component includes a gas outlet cover, two gas outlet molecular sieve cartridge cavities are provided on the gas outlet cover, the two gas outlet molecular sieve cartridge cavities are respectively covered on the two molecular sieve cartridges, the two gas outlet molecular sieve cartridge cavities are respectively connected to the two molecular sieve cartridges, a third gas storage cavity and a fourth gas storage cavity are provided on the gas outlet cover, a gas storage through hole is provided between the third gas storage cavity and the fourth gas storage cavity, the gas storage through hole connects the third gas storage cavity and the fourth gas storage cavity Four gas storage cavities, two oxygen outlets are arranged in the third gas storage cavity, gas outlet channels are opened on the side walls of the two gas outlet molecular sieve cartridge cavities, the gas outlet channels are connected with the oxygen outlets, the oxygen outlets are connected with the third gas storage cavity, a one-way valve is fixed in the oxygen outlet, a nitrogen outlet cavity is opened on the gas outlet cover, a nitrogen exhaust port is arranged in the nitrogen outlet cavity, two upward mounting holes are arranged in the connecting passage, the two mounting holes are respectively connected with the two gas outlet channels, and throttle valves are arranged in the two mounting holes.

[0017] Beneficial effect: the gas outlet part is integrated with the gas outlet cover, the number of parts is reduced, and the subsequent installation is convenient. By setting a throttle valve, a part of the oxygen can flow out through the throttle valve to backwash and clean the other molecular sieve cartridge.

[0018] According to a further technical solution, the air inlet cover is provided with a first oxygen outlet connector and a second oxygen outlet connector, the first oxygen outlet connector and the second oxygen outlet connector are connected to the first gas storage cavity, and the second oxygen outlet connector is provided with a concentration sensor.

[0019] The concentration sensor can detect the concentration of exhaust oxygen in real time, thereby determining whether the oxygen produced by the adsorption tower meets the standards.

[0020] A further technical solution is that the reversing valve includes a valve body, an adsorption tower air inlet is installed on the valve body, a valve left air inlet, a valve right air inlet and a valve nitrogen exhaust port are opened on the valve body, the valve left air inlet and the valve right air inlet can be respectively communicated with the adsorption tower air inlet, the valve left air inlet and the valve right air inlet can be respectively communicated with the valve nitrogen exhaust port, the exhaust hole is communicated with the valve nitrogen exhaust port, the first air inlet is communicated with the valve left air inlet, and the second air inlet is communicated with the valve right air inlet.

[0021] Beneficial effect: the reversing valve can alternately control the air to enter the two molecular sieve cylinders and discharge nitrogen, thereby controlling the oxygen production operation and improving the oxygen production efficiency.

[0022] According to a further technical solution, a plurality of threaded holes are arranged on the air outlet integrated cover component and the air inlet integrated cover component, a plurality of threaded tubes are arranged around the adsorption tower body, and the air inlet integrated cover component and the air outlet integrated cover component are fixed to both ends of the adsorption tower body by bolts.

[0023] Beneficial effect: by arranging corresponding threaded holes and threaded tubes on both sides of the adsorption tower body and on the air inlet cover and the air outlet cover, the assembly of the entire adsorption tower is facilitated, and the adsorption tower body and the air inlet cover and the air outlet cover can be quickly assembled by tightening the bolts, thereby improving the assembly speed.

[0024] According to a further technical solution, an air valve sealing ring is installed between the reversing valve and the air inlet integrated cover component, and a first sealing ring is installed between the air inlet integrated cover component and the adsorption tower body, and between the air outlet integrated cover component and the adsorption tower body.

[0025] Beneficial effect: by setting the sealing ring, the sealing effect can be improved to prevent air leakage.

[0026] According to a further technical solution, a sound-absorbing material is installed in the nitrogen exhaust silencer.

[0027] Beneficial effect: the noise reduction effect can be improved by installing sound-absorbing materials.

[0028] In summary, the present invention has the following beneficial effects: the adsorption tower reduces the number of parts, simplifies the structure, reduces the difficulty of assembly, improves production efficiency, and improves space utilization by integrating the air inlet integrated cover component, the air outlet integrated cover component, the molecular sieve cylinder, the nitrogen exhaust silencer cylinder, the gas storage tank and the threaded pipe.

[0029] The nitrogen exhausted from the integrated adsorption tower of the oxygen generator of the present application is directly output to the nitrogen exhaust silencer, and the nitrogen exhaust silencer is filled with silencer material, so the exhaust noise is processed in time, which greatly reduces the exhaust noise. The molecular sieve cylinder and the gas storage tank are distributed around the nitrogen exhaust silencer, which also plays an isolating role on the exhaust noise, further reducing the exhaust noise.

[0030] By integrating two molecular sieve cartridges on one adsorption tower body, not only the difficulty of assembly is reduced, but also the oxygen production efficiency is improved by enabling the two molecular sieve cartridges to alternately produce oxygen through the control of the reversing direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of the integrated adsorption tower of the oxygen generator in this application;

[0033] Figure 2 This is an exploded view of the integrated adsorption tower of the oxygen generator in this application;

[0034] Figure 3 This is a first three-dimensional structural schematic diagram of the air intake integrated cover component of the present application;

[0035] Figure 4 This is a second three-dimensional structural schematic diagram of the air intake integrated cover component of the present application;

[0036] Figure 5 A cross-sectional view of the air intake integrated cover component of the present application;

[0037] Figure 6 A top view of the adsorption tower of the present application;

[0038] Figure 7 This is an exploded view of the integrated cover component of the present application;

[0039] Figure 8 This is a schematic diagram of the three-dimensional structure of the integrated air outlet cover component of this application;

[0040] Fig. 9 A cross-sectional view of the integrated air outlet cover component of the present application;

[0041] Fig.10 This is a schematic diagram of the three-dimensional structure of the reversing valve of this application.

[0042] In the figure: 100, air inlet integrated cover component; 101, air inlet cover; 111, first molecular sieve cylinder cavity; 112, second molecular sieve cylinder cavity; 113, air inlet channel; 114, first gas storage cavity; 115, second gas storage cavity; 131, first oxygen outlet connector; 132, second oxygen outlet connector; 133, nitrogen inlet; 140, valve seat; 141, first air inlet hole; 142, second air inlet hole; 143, exhaust hole; 144, air valve fixing column; 200, adsorption tower body; 210, molecular sieve cylinder; 211, first molecular sieve cylinder; 212, second molecular sieve cylinder; 220, threaded pipe; 230, nitrogen exhaust silencer; 240, gas storage tank; 241, first gas storage tank; 242, second gas storage tank; 300, air outlet integrated cover component; 30 1. Gas outlet cover; 302. Connecting passage; 303. Mounting hole; 311. Third molecular sieve cartridge cavity; 312. Fourth molecular sieve cartridge cavity; 313. Third gas storage cavity; 314. Fourth gas storage cavity; 315. Nitrogen outlet; 316. Gas storage through hole; 317. Oxygen outlet; 318. Gas outlet channel; 319. Nitrogen outlet; 320. One-way valve; 330. Throttle valve; 340. Pressing plate; 350. Second sealing ring; 360. Screw; 400. Reversing valve; 410. Gas valve body; 420. Gas valve pressing plate; 430. Adsorption tower air inlet; 440. Gas valve left air inlet; 450. Gas valve nitrogen outlet; 460. Gas valve right air inlet; 470. Solenoid valve group; 480. Positioning groove; 500. First sealing ring; 600. Gas valve sealing ring. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the examples, but the embodiments of the present invention are not limited thereto. The technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0048] Combined with Figure 1-Figure 10 The figure shows an integrated adsorption tower of an oxygen generator, including an adsorption tower body 200, an air inlet integrated cover component 100 and an air outlet integrated cover component 300 installed at both ends of the adsorption tower body 200, and a reversing valve 400 installed on the air inlet integrated cover component 100, wherein the adsorption tower body 200 includes a molecular sieve cylinder 210, a gas storage tank 240, and a nitrogen exhaust silencer cylinder 230 opened in the adsorption tower body 200, and the molecular sieve cylinder 210 is provided with an adsorbent filled therein, and the adsorbent is used to adsorb the nitrogen component in the air pumped into the molecular sieve cylinder 210.

[0049] In this embodiment, if Figure 6As shown, two molecular sieve cylinders 210 are provided, one is a first molecular sieve cylinder 211, and the other is a second molecular sieve cylinder 212. The first molecular sieve cylinder 211 and the second molecular sieve cylinder 212 are of the same size and shape. The first molecular sieve cylinder 211 and the second molecular sieve cylinder 212 are symmetrically arranged relative to the nitrogen exhaust silencer cylinder 230, and the nitrogen exhaust silencer cylinder 230 is arranged between the first molecular sieve cylinder 211 and the second molecular sieve cylinder 212. Two gas storage tanks 240 are provided, namely a first gas storage tank 241 and a second gas storage tank 242. The first gas storage tank 241 and the second gas storage tank 242 are symmetrically arranged relative to the nitrogen exhaust silencer cylinder 230, and the second gas storage tank 242 is used to store oxygen. A sound-absorbing material is installed in the nitrogen exhaust silencer cylinder 230. In this embodiment, the sound-absorbing material can be a sound-absorbing cotton. The first molecular sieve cylinder 211, the second molecular sieve cylinder 212, the first gas storage tank 241 and the second gas storage tank 242 are distributed around the nitrogen exhaust silencer cylinder 230 to isolate the exhaust sound, thereby reducing the exhaust noise.

[0050] In one embodiment, Figures 2 to 6 As shown, the air intake integrated cover component 100 includes an air intake cover 101, two air intake molecular sieve cartridge cavities 110 opened on the air intake cover 101, a nitrogen inlet 133 is opened in the middle part of the air intake cover 101, the two air intake molecular sieve cartridge cavities 110 are a first molecular sieve cartridge cavity 111 and a second molecular sieve cartridge cavity 112, the first molecular sieve cartridge cavity 111 and the second molecular sieve cartridge cavity 112 are symmetrically arranged relative to the nitrogen inlet 133, and are respectively located on both sides of the nitrogen inlet 133, the air intake The cover 101 is provided with a first gas storage cavity 114 and a second gas storage cavity 115, which are symmetrically arranged relative to the gas inlet channel 113, and the gas inlet cover 101 is provided with a first oxygen outlet connector 131 and a second oxygen outlet connector 132, which are connected to the first gas storage cavity 114, and the first oxygen outlet connector 131 and the second oxygen outlet connector 132 are arranged on a side surface opposite to the gas inlet molecular sieve cylinder cavity 110.

[0051] Specifically, the air inlet cover 101 is covered on one end of the adsorption tower body 200, so that the air inlet molecular sieve cylinder cavity 110 is covered on the molecular sieve cylinder 210, that is, the first molecular sieve cylinder cavity 111 is covered on the second molecular sieve cylinder 212, the second molecular sieve cylinder cavity 112 is covered on the first molecular sieve cylinder 211, the first gas storage cavity 114 is covered on the second gas storage tank 242, and the second gas storage cavity 115 is covered on the first gas storage tank 241, thereby closing the top of the adsorption tower body 200.

[0052] The first oxygen outlet connector 131 delivers oxygen in the second gas tank 242 and the first gas tank 241 to the oxygen outlet of the oxygen concentrator for use by the user. The second oxygen outlet connector 132 is connected to a concentration sensor, which is specifically an oxygen concentration sensor for detecting the concentration of oxygen.

[0053] In one embodiment, a valve seat 140 is fixed on the side of the air inlet cover 101, and the valve seat 140 and the air inlet cover 101 are cast as one piece. An exhaust hole 143 is provided on the valve seat 140, and a first air inlet hole 141 and a second air inlet hole 142 are provided on both sides of the exhaust hole 143. The exhaust hole 143 is connected to the nitrogen inlet 133. Two air inlet channels 113 are provided in the air inlet cover 101. The first air inlet channel 113 is connected to the first molecular sieve cylinder cavity 111 and the second air inlet channel 113 is connected to the first air inlet hole 141 and the second molecular sieve cylinder cavity 112.

[0054] In one embodiment, Figure 3 , Figure 4 , Figure 5 and Fig.10 As shown, the reversing valve 400 is a solenoid valve, including a gas valve body 410, and the gas valve body 410 is provided with four ports, namely, an adsorption tower air inlet 430, a gas valve nitrogen exhaust port 450, a gas valve left gas port 440 and a gas valve right gas port 460, and the four ports correspond to the pressure port, the return port, the A working port and the B working port of the reversing valve 400 in sequence, wherein the gas valve nitrogen exhaust port 450, the gas valve left gas port 440 and the gas valve right gas port 460 are located on the same installation side of the reversing valve 400, and in the assembled state, the installation side of the reversing valve 400 is sealed and fixed with the installation side of the valve seat 140.

[0055] Specifically, the nitrogen exhaust port 450 of the gas valve is aligned with the exhaust hole 143, the left gas port 440 of the gas valve is aligned with the first gas inlet hole 141, the right gas port 460 of the gas valve is aligned with the second gas inlet hole 142, and a gas valve pressure plate 420 is installed on the lower side of the gas valve body 410, and an electromagnetic valve group 470 is installed on the gas valve pressure plate 420.

[0056] In one embodiment, Figure 2 , Figure 3 and Figure 4 As shown, a closed-loop air valve sealing groove is provided on the outer side of the edge of the first air inlet hole 141, the second air inlet hole 142 and the air exhaust hole 143, and an air valve sealing ring 600 is provided in the air valve sealing groove. When the mounting surface of the reversing valve 400 is matched with the mounting surface of the valve seat 140 in the assembled state, sealing and fixing are achieved through the air valve sealing groove and the air valve sealing ring 600.

[0057] In one embodiment, two symmetrical valve fixing columns 144 are provided on the mounting surface of the valve seat 140, and two symmetrical positioning grooves 480 are provided on the valve body 410. In the assembled state, the mounting surface of the valve seat 140 is positioned by the cooperation between the valve fixing columns 144 and the positioning grooves 480.

[0058] In one embodiment, Figures 6 to 9 As shown, the outlet integrated cover component 300 includes an outlet cover 301, a one-way valve 320, a throttle valve 330, a pressure plate 340, a second sealing ring 350 and a screw 360. The outlet cover 301 is provided with two outlet molecular sieve cartridge cavities 310, and the two outlet molecular sieve cartridge cavities 310 are respectively a third molecular sieve cartridge cavity 311 and a fourth molecular sieve cartridge cavity 312. The outlet cover 301 is also provided with a nitrogen outlet cavity 319, and a nitrogen outlet port 315 is provided in the nitrogen outlet cavity. A third gas storage cavity 313 and a fourth gas storage cavity 314 are provided on both sides of the nitrogen outlet port 315. The outlet cover 301 is provided with a nitrogen outlet cavity 319. There is a gas storage through hole 316, which connects the third gas storage cavity 313 and the fourth gas storage cavity 314 to ensure the air pressure balance in the two molecular sieve cylinders 210. Two oxygen outlets 317 are fixed in the third gas storage cavity 313, and a one-way valve 320 is fixedly installed in the oxygen outlet 317. Gas outlet channels 318 are opened on the side walls of the third molecular sieve cylinder cavity 311 and the fourth molecular sieve cylinder cavity 312. One gas outlet channel 318 connects the third molecular sieve cylinder cavity 311 and one of the oxygen outlets 317, and the other gas outlet channel 318 connects the fourth molecular sieve cylinder cavity 312 and the other oxygen outlet 317.

[0059] A connecting passage 302 is provided on the side of the gas outlet cover 301 away from the adsorption tower body 200, and two mounting holes 303 extending upward are provided on the connecting passage 302. The two mounting holes 303 are respectively connected to the two gas outlet channels 318. A throttle valve 330 is installed in the connecting passage 303, and a pressure plate 340 is installed at the bottom of the connecting passage 302 by screws 360. A second sealing ring 350 is installed between the pressure plate 340 and the gas outlet cover 301, and the gas cover 301 closes the bottom of the connecting passage 302.

[0060] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, a part of the oxygen is back-blown and cleaned from the other molecular sieve cartridge 210 through the throttle valve 330 from the gas outlet duct 318, and the other part enters the gas storage tank 240 through the one-way valve 320. When the pressure value at the air inlet of the adsorption tower reaches the set switching pressure, the control panel sends a control signal, and the reversing valve 400 is actuated to connect the inlets of the two molecular sieve cartridges 210 to achieve the pressure equalization process. After the pressure equalization is completed, the remaining gas in the adsorption tower is discharged into the atmosphere through the nitrogen exhaust silencer 230, completing the decompression desorption and back-blowing cleaning at the same time.

[0061] In one embodiment, Figures 1 to 9 As shown, a plurality of threaded holes are arranged on the periphery of the air outlet cover 301 and the air inlet cover 101, and a plurality of threaded tubes 220 are arranged around the adsorption tower body 200. In the present embodiment, eight threaded holes are arranged, and eight threaded tubes 220 are arranged. The air inlet integrated cover component 100 and the air outlet integrated cover component 300 are fixed between the air inlet integrated cover component 100 and the air outlet integrated cover component 300 by tightening screws and inserting the screws into the threaded tubes 220 and the threaded holes. A first sealing ring 500 is installed at the connection between the air inlet integrated cover component 100 and the adsorption tower body 200, and at the connection between the air inlet integrated cover component 100 and the adsorption tower body 200, and between the air outlet integrated cover component 300 and the adsorption tower body 200 to ensure air tightness.

[0062] Specifically, Figures 1 to 10 As shown, when the oxygen generator is working, air enters the air valve body 410 through the adsorption tower air inlet 430 of the adsorption tower, and the reversing valve 400 controls the air to alternately enter the two molecular sieve cylinders 210. For example, high-pressure air enters the first molecular sieve cylinder 211, and the pressure in the first molecular sieve cylinder 211 increases. This is the pressure-increasing stage of the first molecular sieve cylinder 211. As the pressure increases, the adsorbent preferentially adsorbs nitrogen, and discharges oxygen to the gas storage tank 240 at the oxygen outlet 317; when the adsorbent in the first molecular sieve cylinder 211 is saturated with adsorption, the first molecular sieve cylinder 211 is connected to the nitrogen exhaust port 450 of the air valve, and nitrogen is discharged from the nitrogen exhaust port 450 of the air valve through the exhaust hole 143 on the air inlet cover 101 to the nitrogen inlet 133. At this time, the reversing valve 400 switches to reverse, the second molecular sieve cartridge 212 is connected to the high-pressure air, the first molecular sieve cartridge 211 is connected to the nitrogen exhaust port 450 of the gas valve, and the high-pressure gas in the first molecular sieve cartridge 211 is discharged to the outside into the atmospheric environment, and the pressure drops sharply. This is the desorption stage of the first molecular sieve cartridge 211.

[0063] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology in this field to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An oxygen generator integrated adsorption tower, characterized in that: The invention comprises an adsorption tower body (200), an air inlet integrated cover component (100) and an air outlet integrated cover component (300) installed at two ends of the adsorption tower body (200), and a reversing valve (400) installed on the air inlet integrated cover component (100); a molecular sieve cartridge (210), a gas storage tank (240), and a nitrogen exhaust silencer cylinder (230) are arranged in the adsorption tower body (200); wherein the molecular sieve cartridge (210) is connected to the gas storage tank (240); the molecular sieve cartridge (210) can be connected to the nitrogen exhaust silencer cylinder (230) under the control of the reversing valve (400); and an adsorbent is filled in the molecular sieve cartridge (210).

2. The oxygen generator integrated adsorption tower according to claim 1, characterized in that: At least two molecular sieve cylinders (210) are provided and are arranged on both sides of the nitrogen exhaust silencer cylinder (230).

3. The oxygen generator integrated adsorption tower according to claim 1, characterized in that: At least one gas storage tank (240) is provided, and the gas storage tank (240) is located on one side of the nitrogen exhaust silencer (230).

4. The oxygen generator integrated adsorption tower according to claim 1, characterized in that: The air intake integrated cover component (100) is provided with an air intake passage and a nitrogen exhaust passage, the air intake passage is used to introduce compressed air into the molecular sieve cylinder (210), and the nitrogen exhaust passage is used to exhaust the gas in the molecular sieve cylinder (210) into the nitrogen exhaust silencer cylinder (230).

5. The oxygen generator integrated adsorption tower according to claim 4, characterized in that: The molecular sieve cartridges (210) are provided with two, the air intake integrated cover component (100) comprises an air intake cover (101), the air intake cover (101) is provided with two air intake molecular sieve cartridge cavities (110), the two air intake molecular sieve cartridge cavities (110) are respectively covered on the two molecular sieve cartridges (210), and the two air intake molecular sieve cartridge cavities (110) are respectively connected to the two molecular sieve cartridges (210), and the air intake cover (101) is provided with a plurality of air intake molecular sieve cartridges (210). A nitrogen inlet (133) is provided, the nitrogen inlet (133) is located between the two air intake molecular sieve cylinder cavities (110) and is connected to the nitrogen exhaust silencer cylinder (230); a first gas storage cavity (114) and a second gas storage cavity (115) are provided on the air intake cover (101); the first gas storage cavity (114) and the second gas storage cavity (115) are located on both sides of the nitrogen inlet (133) and are connected to the gas storage tank (240).

6. The oxygen generator integrated adsorption tower according to claim 5, characterized in that: A valve seat (140) is fixed on the air intake cover (101); the air intake passage comprises a first air intake hole (141) and a second air intake hole (142) which are provided on the valve seat (140); the nitrogen exhaust passage is an exhaust hole (143) provided on the valve seat (140); the exhaust hole (143) is communicated with the nitrogen inlet (133); two air intake channels (113) are provided on the air intake cover (101); the first air intake hole (141) and the second air intake hole (142) are respectively communicated with two air intake molecular sieve cartridge cavities (110) through the two air intake channels (113).

7. The oxygen generator integrated adsorption tower according to claim 2, characterized in that: The gas outlet integrated cover component (300) is provided with an oxygen storage channel for connecting the molecular sieve cartridge (210) and the gas storage tank (240), and the gas outlet integrated cover component (300) is provided with a connecting passage (302) on the side away from the adsorption tower body (200), and the connecting passage (302) is used to connect at least two molecular sieve cartridges (210).

8. The oxygen generator integrated adsorption tower according to claim 7, characterized in that: Two molecular sieve cartridges (210) are provided, and the gas outlet integrated cover component (300) comprises a gas outlet cover (301), and two gas outlet molecular sieve cartridge cavities (310) are provided on the gas outlet cover (301), and the two gas outlet molecular sieve cartridge cavities (310) are respectively covered on the two molecular sieve cartridges (210), and the two gas outlet molecular sieve cartridge cavities (310) are respectively connected to the two molecular sieve cartridges (210), and the gas outlet cover (301) is provided with a third gas storage cavity (313) and a fourth gas storage cavity (314), and a gas storage through hole (316) is provided between the third gas storage cavity (313) and the fourth gas storage cavity (314), and the third gas storage cavity (313) and the fourth gas storage cavity (314) are connected. Two oxygen outlets (317) are arranged in the gas storage cavity (313); gas outlet channels (318) are provided on the side walls of the two gas outlet molecular sieve cartridge cavities (310); the gas outlet channels (318) are communicated with the oxygen outlets (317); the oxygen outlets (317) are communicated with the third gas storage cavity (313); a one-way valve (320) is fixed in the oxygen outlet (317); a nitrogen outlet cavity (319) is provided on the gas outlet cover (301); a nitrogen exhaust port (315) is provided in the nitrogen outlet cavity (319); the communication passage (302) is provided with two upward mounting holes (303); the two mounting holes (303) are respectively communicated with the two gas outlet channels (318); and a throttle valve (330) is provided in the two mounting holes (303).

9. The oxygen generator integrated adsorption tower according to claim 5, characterized in that: The air inlet cover (101) is provided with a first oxygen outlet connector (131) and a second oxygen outlet connector (132); the first oxygen outlet connector (131) and the second oxygen outlet connector (132) are in communication with the first gas storage cavity (114); and the second oxygen outlet connector (132) is provided with a concentration sensor.

10. The oxygen generator integrated adsorption tower according to claim 6, characterized in that: The reversing valve (400) comprises a valve body (410), on which an adsorption tower air inlet (430) is mounted, and on which a valve left air inlet (440), a valve right air inlet (460) and a valve nitrogen exhaust port (450) are provided. The valve left air inlet (440) and the valve right air inlet (460) can be respectively communicated with the adsorption tower air inlet (430), the valve left air inlet (440) and the valve right air inlet (460) can be respectively communicated with the valve nitrogen exhaust port (450), the exhaust hole (143) is communicated with the valve nitrogen exhaust port (450), the first air inlet (141) is communicated with the valve left air inlet (440), and the second air inlet (142) is communicated with the valve right air inlet (460).

11. The oxygen generator integrated adsorption tower according to claim 1, characterized in that: A plurality of threaded holes are arranged on the air outlet integrated cover component (300) and the air inlet integrated cover component (100), a plurality of threaded tubes (220) are arranged around the adsorption tower body (200), and the air inlet integrated cover component (100) and the air outlet integrated cover component (300) are fixed to both ends of the adsorption tower body (200) by bolts.

12. The oxygen generator integrated adsorption tower according to claim 1, characterized in that: An air valve sealing ring (600) is installed between the reversing valve (400) and the air inlet integrated cover component (100), and a first sealing ring (500) is installed between the air inlet integrated cover component (100) and the adsorption tower body (200), and between the air outlet integrated cover component (300) and the adsorption tower body (200).

13. An oxygen generator integrated adsorption tower according to any one of claims 1 to 12, characterized in that: The nitrogen exhaust silencer (230) is installed with silencer material.

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