Single oxygen concentrator

Abstract

The present invention discloses a single-person oxygen concentrator, comprising a compressor for compressing air and an adsorption component for separating nitrogen and oxygen in the air, the adsorption component comprising two adsorption tanks, a circulation tank being arranged between the two adsorption tanks, a spiral sleeve, a rotating rod, a feeding plate and a collecting tank being arranged inside the circulation tank, the rotating rod being coaxially slidably connected with the spiral sleeve, the feeding plate being threadedly connected with the spiral sleeve, the collecting tank being located below the feeding plate, the feeding plate being movable inside the circulation tank, screening out broken bodies and powder in molecular sieve particles, and transposing the screened molecular sieve particles, the circulation tank of the oxygen concentrator in the present invention is used for screening out broken bodies and powder of molecular sieve particles, and the feeding plate being able to move the screened molecular sieve particles from the air inlet end to the air outlet end at the same time, so as to maintain the adsorption energy efficiency of the molecular sieve at the air inlet end, and the collecting tank inside the circulation tank being able to collect and timely process the screened out broken bodies and powder.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen production equipment, and in particular to a single-person oxygen production machine. Background Art

[0002] The molecular sieve in a single-person oxygen concentrator is a key component. The molecular sieve particles inside the molecular sieve have a uniform microporous structure, and these micropores can be adsorbed according to the size and shape of gas molecules. During the oxygen production process, nitrogen, oxygen and other molecules in the air are adsorbed onto the surface of the molecular sieve particles. Since nitrogen molecules are more easily captured by the molecular sieve particles inside the oxygen concentrator, the separation of oxygen and nitrogen is achieved. During the oxygen production process, the molecular sieve particles will be broken due to the impact of high-pressure gas, and the flow friction between the molecular sieve particles will also produce powder. The resulting molecular sieve broken bodies and powder will affect the overall adsorption performance of the molecular sieve, and the powder entering the airway of the oxygen concentrator will easily affect the airway valve and block the airway, affecting the normal operation of the oxygen concentrator. Summary of the invention

[0003] In view of the situation that the broken bodies and powder of molecular sieve particles inside the oxygen concentrator will have an adverse effect on the molecular sieve as a whole, the present invention proposes a single-person oxygen concentrator, in which a cleaning component is arranged inside the oxygen concentrator, and the molecular sieve particles are cleaned when the oxygen concentrator is not performing oxygen production, so as to remove the broken bodies and powder in the molecular sieve particles.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A single-person oxygen concentrator includes at least an air filter for filtering air, a compressor for compressing the filtered air, an adsorption assembly for separating nitrogen and oxygen in the air, and a gas storage tank for storing the separated gas. The adsorption assembly includes two adsorption tanks, which perform gas separation work alternately. A circulation tank is arranged between the two adsorption tanks. The circulation tank is used to screen out the broken bodies and powders in the molecular sieve particles inside the adsorption tanks, and to transpose the molecular sieve particles after screening. The circulation tank is connected to each adsorption tank through a first material pipe and a second material pipe. The second material pipe is located above the first material pipe. The first material pipe is used for the molecular sieve particles to enter the circulation tank from the adsorption tank, and the second material pipe is used for the molecular sieve particles to enter the adsorption tank from the circulation tank.

[0006] The above-mentioned circulation tank is internally provided with a spiral sleeve, a rotating rod and a feeding plate, the spiral sleeve and the rotating rod are coaxially arranged, the rotating rod is rotationally connected to the circulation tank, the spiral sleeve is sleeved on the outside of the rotating rod and is axially slidingly connected to the rotating rod, a limit plate is fixedly arranged on the upper end of the spiral sleeve, a first elastic member is arranged between the limit plate and the rotating rod, and a collecting trough is fixedly arranged on the lower end of the spiral sleeve; the feeding plate is axially slidingly connected to the circulation tank and is threadedly connected to the outside of the spiral sleeve, sieve holes for screening molecular sieve particles are arranged on the feeding plate, the feeding plate is located above the collecting trough, and the edges of the feeding plate and the collecting trough are respectively attached to the inner wall of the circulation tank; a vibration cylinder is arranged below the collecting trough, and the vibration cylinder is used to drive the collecting trough, the feeding plate and the spiral sleeve to vibrate axially to realize the screening of the molecular sieve particles on the feeding plate.

[0007] Preferably, an air inlet plate and an air outlet plate are provided inside the adsorption tank, the air outlet plate is located above the air inlet plate, and the molecular sieve particles are located between the air inlet plate and the air outlet plate; the air inlet plate is fixedly connected to the adsorption tank, and the first material pipe is connected to the space above the air inlet plate; the air outlet plate is connected to the adsorption tank through a first functional cylinder, and the first functional cylinder is used to drive the air outlet plate to move in the axial direction of the adsorption tank, and when the adsorption tank performs gas separation work, the second material pipe is connected to the space above the air outlet plate; when the circulation tank is used to screen out the broken bodies and powders in the molecular sieve particles inside the adsorption tank, and to perform transposition work on the screened molecular sieve particles, the second material pipe is connected to the space between the air inlet plate and the air outlet plate.

[0008] Preferably, a sealing rod matching the sieve hole on the feeding plate is provided inside the collecting trough, and the sealing rod is used to enter the sieve hole to achieve sealing above the collecting trough.

[0009] Preferably, the collecting trough is provided with a third elastic member for supporting the feeding plate, and the axis of the third elastic member is arranged parallel to the axis of the spiral sleeve.

[0010] Preferably, the vibration cylinder includes a piston rod, a cylinder body, a piston located inside the cylinder body, a second elastic member and a limit sleeve. The piston and the cylinder body are axially slidably connected, the lower end of the piston rod is fixedly connected to the piston, the upper end of the piston rod passes through the cylinder body and is connected to the bottom of the collecting tank, a second elastic member is arranged between the upper end of the piston and the cylinder body, and a limit sleeve for limiting the piston is arranged below the piston.

[0011] The cylinder body is connected with a fourth air inlet pipe and a fourth air outlet pipe, the connection point between the fourth air outlet pipe and the cylinder body is located above the connection point between the fourth air inlet pipe and the cylinder body, the fourth air inlet pipe is used to connect to the lower space of the piston, and the fourth air outlet pipe is used to discharge gas from the cylinder body. The gas enters the cylinder body from the bottom of the piston and pushes the piston to move upward. When the piston is at the upper limit position, the fourth air inlet pipe is connected with the fourth air outlet pipe, and the piston moves downward and returns to its original position under the pressure of the second elastic member, and the piston reciprocates axially to form vibration.

[0012] Preferably, the air outlet end of the compressor is connected to the collecting tank, and the collecting tank is also connected to the feed end of the bag collector through a third material pipe.

[0013] Preferably, a distribution valve is also provided inside the circulation tank, the first connector of the distribution valve is connected to the air outlet of the compressor through the third air inlet pipe, the second connector of the distribution valve is connected to the interior of the collection tank through the fifth air inlet pipe, and the third connector of the distribution valve is connected to the fourth air inlet pipe.

[0014] Preferably, the fourth air outlet pipe is connected to the exhaust pipe through the third air outlet pipe.

[0015] Preferably, a first material valve is provided on the first material pipe, and a second material valve is provided on the second material pipe, and both the first material valve and the second material valve are electrically controlled valves.

[0016] Preferably, the two adsorption tanks are connected to the circulation tank via a combined bracket.

[0017] The beneficial effects of the present invention are:

[0018] 1. The adsorption component of the single-person oxygen concentrator is equipped with a circulation tank, which is used to batch screen and replace the molecular sieve particles inside the adsorption tank in the adsorption component. Screening is used to remove the powder generated by the broken bodies in the molecular sieve particles and the friction between the molecular sieve particles to maintain the overall adsorption effect and capacity of the molecular sieve. At the same time, the feeding plate can move the screened molecular sieve particles from the air inlet end to the air outlet end of the adsorption tank to maintain the adsorption efficiency of the molecular sieve air inlet end for water and dust.

[0019] 2. The circulation tank of the single-person oxygen concentrator is provided with a collecting trough below the feeding plate. The collecting trough is used to collect the sieved broken bodies and powders. The broken bodies and powders inside the collecting trough can be blown out by the high-pressure gas of the compressor to achieve timely processing of the broken bodies and powders. When blowing out, the top of the collecting trough can be sealed by the feeding plate to form a blowing space to prevent the broken bodies and powders inside the collecting trough from entering the adsorption tank upwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a single-person oxygen concentrator of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the oxygen circuit of the single-person oxygen generator of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the adsorption assembly of the single-person oxygen concentrator of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the cross section of the adsorption assembly of the single-person oxygen concentrator of the present invention at AA;

[0024] Figure 5 It is a structural schematic diagram of the collection tank of the adsorption component of the single-person oxygen concentrator of the present invention;

[0025] Figure 6 The single-person oxygen concentrator adsorption component of the present invention Figure 5 The structural diagram at B in the middle;

[0026] Figure 7 It is a structural schematic diagram of the molecular sieve particles of the adsorption tank of the adsorption assembly of the single-person oxygen generator of the present invention when discharging;

[0027] Figure 8 It is a structural schematic diagram of the single-person oxygen generator adsorption assembly adsorption tank of the present invention when the molecular sieve particles are fed;

[0028] Fig. 9 It is a structural schematic diagram of the connection seat of the single-person oxygen concentrator of the present invention.

[0029] In the figure: 1, compressor; 2, adsorption component; 3, gas storage tank; 4, control panel; 5, humidification bottle; 6, circulation tank; 7, air filter; 8, pressure regulating valve; 9, bag collector; 10, combined bracket; 11, first air guide pipe; 12, second air guide pipe; 13, backflush pipe; 14, first material pipe; 15, second material pipe; 16, exhaust pipe; 17, third air inlet pipe; 18, third air outlet pipe; 19, third material pipe;

[0030] 21. first adsorption tank; 22. second adsorption tank; 211. first air inlet pipe; 212. first air outlet pipe; 213. first molecular sieve particles; 214. air inlet plate; 215. air outlet plate; 216. first functional cylinder; 217. connecting seat; 2171. slider; 2172. fourth elastic member; 2111. first valve body; 2112. second valve body; 2121. third valve body; 221. second air inlet pipe; 222. second air outlet pipe; 223. second molecular sieve particles; 2211. fourth valve body; 2212. fifth valve body; 2221. sixth valve body;

[0031] 61. spiral sleeve; 62. rotating rod; 63. first elastic member; 64. feeding plate; 65. vibrating cylinder; 66. supporting body; 67. distributing valve; 611. limiting plate; 612. collecting tank; 613. sealing rod; 614. third elastic member; 641. sieve hole; 651. piston; 652. piston rod; 653. second elastic member; 654. limiting sleeve; 655. fourth air inlet pipe; 656. fourth air outlet pipe; 657. cylinder body; 671. first joint; 672. second joint; 673. third joint; 6121. fifth air inlet pipe;

[0032] 131, the seventh valve; 141, the first material valve; 151, the second material valve; 171, the eighth valve; 181, the ninth valve; 191, the tenth valve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1 and Figure 2 A single-person oxygen concentrator includes a shell and a compressor 1, an adsorption component 2, a gas storage tank 3 and an air filter 7 located inside the shell. The air filter 7, the compressor 1, the adsorption component 2 and the gas storage tank 3 are connected in sequence. Among them, the air filter 7 is used to filter the air; the compressor 1 is used to compress the filtered air to obtain high-pressure air; the adsorption component 2 includes two adsorption tanks, and molecular sieve particles are arranged inside the adsorption tanks. The molecular sieve particles can adsorb nitrogen in the air to achieve the separation of nitrogen and oxygen in the air; the gas storage tank 3 is used to store the separated oxygen. The single-person oxygen concentrator also includes a humidification bottle 5 and a control panel 4. The humidification bottle 5 is connected to the air outlet end of the gas storage tank 3, and the humidification bottle 5 is used to humidify the oxygen output by the gas storage tank 3. The control panel 4 is located outside the shell of the single-person oxygen concentrator for operation. A handle or a shoulder strap is also provided on the outside of the shell for easy carrying.

[0035] refer to Figure 2 and Figure 3The adsorption assembly 2 includes a first adsorption tank 21 and a second adsorption tank 22, and the first adsorption tank 21 and the second adsorption tank 22 have the same structure. The air inlet end of the first adsorption tank 21 is provided with a first air inlet pipe 211, and the air outlet end of the first adsorption tank 21 is provided with a first air outlet pipe 212; the air inlet end of the second adsorption tank 22 is provided with a second air inlet pipe 221, and the air outlet end of the second adsorption tank 22 is provided with a second air outlet pipe 222. The air outlet end of the compressor 1 is connected with a pressure-stabilizing valve 8, and the pressure-stabilizing valve 8 is connected with the first air inlet pipe 211 and the second air inlet pipe 221 respectively through the first air guide pipe 11, a first valve body 2111 is provided between the first air guide pipe 11 and the first air inlet pipe 211, and a fourth valve body 2211 is provided between the first air guide pipe 11 and the second air inlet pipe 221. The first air inlet pipe 211 and the second air inlet pipe 221 are also connected to the exhaust pipe 16, respectively. A second valve body 2112 is provided between the exhaust pipe 16 and the first air inlet pipe 211, and a fifth valve body 2212 is provided between the exhaust pipe 16 and the second air inlet pipe 221. The air inlet end of the air storage tank 3 is connected to the first air outlet pipe 212 and the second air outlet pipe 222 through the second air guide pipe 12, respectively. A third valve body 2121 is provided between the second air guide pipe 12 and the first air outlet pipe 212, and a sixth valve body 2221 is provided between the second air guide pipe 12 and the second air outlet pipe 222. The first air outlet pipe 212 and the second air outlet pipe 222 are connected through the backflush pipe 13, and a seventh valve 131 is provided on the backflush pipe 13.

[0036] The air is filtered by the air filter 7 and then enters the compressor 1. The compressor 1 compresses the filtered air to obtain high-pressure air. The high-pressure air enters the first air guide pipe 11 through the pressure-stabilizing valve 8. The first adsorption tank 21 and the second adsorption tank 22 perform gas separation work alternately. First, the first adsorption tank 21 works, and the second adsorption tank 22 desorbs. The first valve body 2111, the third valve body 2121, the fifth valve body 2212 and the seventh valve 131 are opened, and the second valve body 2112, the fourth valve body 2211 and the sixth valve body 2221 are closed. The high-pressure air enters the first adsorption tank 21 from the first air inlet pipe 211. The first adsorption tank 21 performs gas separation work. Part of the oxygen obtained comes out from the first air outlet pipe 212 and enters the gas storage tank 3 for storage. Part of the oxygen enters the second adsorption tank 22 from the backflush pipe 13, and the nitrogen desorbed from the second adsorption tank 22 is blown out from the exhaust pipe 16. Then, the second adsorption tank 22 works, the first adsorption tank 21 is desorbed, the first valve body 2111, the third valve body 2121, and the fifth valve body 2212 are closed, the second valve body 2112, the fourth valve body 2211, the sixth valve body 2221 and the seventh valve 131 are opened, and the high-pressure air enters the second adsorption tank 22 from the second air inlet pipe 221, and the second adsorption tank 22 performs gas separation work, and part of the oxygen obtained comes out from the second air outlet pipe 222 and enters the gas storage tank 3 for storage, and part of the oxygen enters from the first adsorption tank 21 from the backblowing pipe 13, and the nitrogen desorbed from the first adsorption tank 21 is blown out from the exhaust pipe 16.

[0037] The first adsorption tank 21 and the second adsorption tank 22 have the same structure, and the first molecular sieve particles 213 are arranged inside the first adsorption tank 21, and the second molecular sieve particles 223 are arranged inside the second adsorption tank 22. The first molecular sieve particles 213 and the second molecular sieve particles 223 are both 5A type molecular sieves, and the pore size of the 5A type molecular sieve is about 0.5 nanometers, which can adsorb molecules such as nitrogen and carbon dioxide, thereby realizing nitrogen and oxygen separation.

[0038] Specifically, refer to Figure 3 The first adsorption tank 21 is provided with an air inlet plate 214 and an air outlet plate 215 inside. The air outlet plate 215 is located above the air inlet plate 214, and the first molecular sieve particles 213 are located between the air inlet plate 214 and the air outlet plate 215. The air inlet plate 214 is fixedly connected to the first adsorption tank 21, and a first functional cylinder 216 is fixedly provided on the top plate of the first adsorption tank 21. The air outlet plate 215 is fixedly connected to the bottom of the first functional cylinder 216. The air outlet plate 215 is connected to the first adsorption tank 21 through the first functional cylinder 216. The first functional cylinder 216 is used to drive the air outlet plate 215 to move in the axial direction of the first adsorption tank 21.

[0039] Furthermore, a circulation tank 6 is provided between the first adsorption tank 21 and the second adsorption tank 22, and the first adsorption tank 21, the second adsorption tank 22 and the axis of the circulation tank 6 are arranged parallel, and the first adsorption tank 21, the second adsorption tank 22 and the circulation tank 6 are combined and connected through a combination bracket 10. The circulation tank 6 is used to screen out the broken bodies and powders in the molecular sieve particles inside the adsorption tank, and to transpose the screened molecular sieve particles.

[0040] Specifically, refer to Figure 3 The circulation tank 6 is connected to the first adsorption tank 21 and the second adsorption tank 22 through the first material pipe 14 and the second material pipe 15. The second material pipe 15 is located above the first material pipe 14. The first material valve 141 is provided on the first material pipe 14, and the second material valve 151 is provided on the second material pipe 15. Both the first material valve 141 and the second material valve 151 are electrically controlled valves, which facilitate the control of the opening and closing of the first material pipe 14 and the second material pipe 15.

[0041] One end of the first material pipe 14 connected to the first adsorption tank 21 is the feed end, and one end of the first material pipe 14 connected to the circulation tank 6 is the discharge end, and the feed end of the first material pipe 14 is higher than the discharge end. The feed end of the first material pipe 14 is connected to the space above the air inlet plate 214, and the discharge end of the first material pipe 14 is connected to the interior of the circulation tank 6. The first material pipe 14 is used for the molecular sieve particles to enter the circulation tank 6 from the adsorption tank.

[0042] Furthermore, one end of the second material pipe 15 connected to the circulation tank 6 is the feed end, and one end of the second material pipe 15 connected to the first adsorption tank 21 is the discharge end, and the feed end of the second material pipe 15 is higher than the discharge end. The second material pipe 15 is used for the molecular sieve particles to enter the adsorption tank from the circulation tank 6.

[0043] When the first adsorption tank 21 performs gas separation, the first functional cylinder 216 makes the gas outlet plate 215 located in the first position, that is, the gas outlet plate 215 is located below the second material pipe 15. The gas outlet plate 215 is used to compress the first molecular sieve particles 213 in the first position. The feed end of the second material pipe 15 is connected to the interior of the circulation tank 6, and the discharge end of the second material pipe 15 is connected to the space above the gas outlet plate 215. At this time, the second material pipe 15 is in a closed state. When the circulation tank 6 performs molecular sieve particle powder screening and transposition work, the first functional cylinder 216 makes the gas outlet plate 215 located in the second position. At this time, the gas outlet plate 215 is located above the discharge end of the second material pipe 15, and the second material pipe 15 is connected to the space between the gas inlet plate 214 and the gas outlet plate 215. The second material pipe 15 is in an open state. The molecular sieve particles inside the circulation tank 6 can enter the space between the gas inlet plate 214 and the gas outlet plate 215 from the second material pipe 15 under the action of gravity.

[0044] Further, the lower end of the first functional cylinder 216 is a working end, and a connecting seat 217 is provided at the lower end of the first functional cylinder 216. Fig. 9 The connection seat 217 is provided with a slider 2171 and a fourth elastic member 2172 inside. The slider 2171 is slidably connected to the connection seat 217. The lower end of the first functional cylinder 216 passes through the connection seat 217 and is fixedly connected to the slider 2171. The fourth elastic member 2172 is located below the slider 2171. The fourth elastic member 2172 is used to realize the elastic compression of the first functional cylinder 216 on the gas outlet plate 215, thereby realizing the elastic pressure of the gas outlet plate 215 on the molecular sieve particles, so as to adapt to the change of the internal air pressure of the first adsorption tank 21.

[0045] refer to Figure 3 and Figure 6 The above-mentioned circulation tank 6 is provided with a spiral sleeve 61 and a rotating rod 62 inside, and the spiral sleeve 61 and the rotating rod 62 are coaxially arranged. The rotating rod 62 is rotatably connected with the circulation tank 6, and a rotating motor 621 driving the rotating rod 62 to rotate is arranged on the top of the circulation tank 6. The output shaft of the rotating motor 621 is connected to the upper end of the rotating rod 62 through a coupling, and the lower end of the rotating rod 62 extends to the bottom of the circulation tank 6 and is rotatably connected to the support body 66 at the bottom of the circulation tank 6.

[0046] Furthermore, the spiral sleeve 61 is sleeved on the outside of the rotating rod 62, and the inner wall of the spiral sleeve 61 is axially slidably connected to the rotating rod 62 through a spline. A limit plate 611 is fixedly provided at the upper end of the spiral sleeve 61, and a first elastic member 63 is provided between the limit plate 611 and the top of the circulation tank 6. The first elastic member 63 is sleeved on the outside of the rotating rod 62. A collection tank 612 is fixedly provided at the lower end of the spiral sleeve 61, and a vibration cylinder 65 is provided below the collection tank 612. The vibration cylinder 65 is fixedly installed at the bottom of the circulation tank 6, and the vibration cylinder 65 is used to drive the collection tank 612, the spiral sleeve 61 and the limit plate 611 to vibrate in the axial direction.

[0047] The spiral sleeve 61 is provided with a feeding plate 64, which is threadedly connected to the spiral sleeve 61, and is used to receive the molecular sieve particles from the adsorption tank into the circulation tank 6. An infrared ranging sensor is provided on the top of the circulation tank 6 to measure the height of the top surface of the molecular sieve particles on the feeding plate 64 to avoid too many molecular sieve particles entering the feeding plate 64 at a single time.

[0048] refer to Figure 3 and Figure 4 The radial cross section of the circulation tank 6 is polygonal, and the edge of the feed plate 64 matches the radial cross section profile of the inner wall of the circulation tank 6. The edge of the feed plate 64 is in contact with the inner wall of the circulation tank 6, and the feed plate 64 can slide in the axial direction of the circulation tank 6. The rotary motor 621 drives the rotary rod 62 and the spiral sleeve 61 to rotate synchronously, and the rotation of the spiral sleeve 61 is used to realize the axial movement of the feed plate 64 in the spiral sleeve 61.

[0049] The circulation tank 6 is provided with a position sensor for the feed plate 64, and the position sensor is used to identify the position of the feed plate 64, and then control the working state of the rotating motor 621 to ensure that the feed plate 64 stays at the target position.

[0050] Furthermore, the feed plate 64 is provided with a sieve hole 641 for screening, the aperture of the sieve hole 641 is smaller than the outer diameter of the molecular sieve particles, and the feed plate 64 can be used for screening the molecular sieve particles to screen out the broken bodies and powders in the molecular sieve particles. The feed plate 64 is located above the collecting tank 612, and the broken bodies and powders screened out by the molecular sieve particles are collected by the collecting tank 612. When the molecular sieve particles are screened, the vibration cylinder 65 can drive the collecting tank 612, the feed plate 64 and the spiral sleeve 61 to vibrate in the axial direction, so as to realize the screening of the molecular sieve particles on the feed plate 64.

[0051] refer to Figure 5 and Figure 6The above-mentioned vibration cylinder 65 includes a piston rod 652, a cylinder body 657, a piston 651 located inside the cylinder body 657, a second elastic member 653 and a limiting sleeve 654. The piston 651 is axially slidably connected to the cylinder body 657. The lower end of the piston rod 652 is fixedly connected to the piston 651. The upper end of the piston rod 652 passes through the cylinder body 657 and is connected to the bottom of the collection tank 612. A second elastic member 653 is arranged between the upper end of the piston 651 and the cylinder body 657. A limiting sleeve 654 for limiting the position of the piston 651 is arranged below the piston 651. The second elastic member 653 is used to press the piston 651 so that the piston 651 contacts the limiting sleeve 654. Since the collection tank 612 is fixedly connected to the spiral sleeve 61, the collection tank 612 will rotate relative to the circulation tank 6. A rotating plate body is arranged at the bottom of the collection tank 612. The rotating plate body is rotatably connected to the collection tank 612. The upper end of the piston rod 652 is fixedly connected to the rotating plate body.

[0052] The cylinder body 657 is connected with a fourth air inlet pipe 655 and a fourth air outlet pipe 656, and the connection point between the fourth air outlet pipe 656 and the cylinder body 657 is located above the connection point between the fourth air inlet pipe 655 and the cylinder body 657. The fourth air inlet pipe 655 is used to connect the lower space of the piston 651, and the fourth air outlet pipe 656 is used to discharge the gas from the cylinder body 657. The gas enters the cylinder body 657 from the bottom of the piston 651, the air pressure in the lower space of the piston 651 increases, the piston 651 moves upward, and the second elastic member 653 is compressed. When the piston 651 is located above the fourth air outlet pipe 656, the fourth air inlet pipe 655 is connected with the fourth air outlet pipe 656, the air pressure in the lower space of the piston 651 decreases, and the piston 651 moves downward and returns to its original position under the pressure of the second elastic member 653, forming a reciprocating movement of the piston 651 in the axial direction of the cylinder body 657, thereby causing the collecting tank 612, the feeding plate 64 and the spiral sleeve 61 to vibrate.

[0053] A distribution valve 67 is also provided inside the circulation tank 6. The first joint 671 of the distribution valve 67 is connected to the gas outlet of the compressor 1 through the third air inlet pipe 17. The third joint 673 of the distribution valve 67 is connected to the fourth air inlet pipe 655. The fourth air outlet pipe 656 is connected to the exhaust pipe 16 through the third air outlet pipe 18. An eighth valve 171 is provided on the third air inlet pipe 17, and a ninth valve 181 is provided on the third air outlet pipe 18. When the molecular sieve particles are screened, the third air inlet pipe 17 introduces the gas of the compressor 1 into the distribution valve 67, and the distribution valve 67 introduces the gas into the vibration cylinder 65 through the fourth air inlet pipe 655. The gas is discharged from the fourth air outlet pipe 656 and the exhaust pipe 16, so as to realize the vibration of the vibration cylinder 65.

[0054] For further reference, Figure 5 and Figure 6, the second joint 672 of the distribution valve 67 is connected to the inside of the collection tank 612 through the fifth air inlet pipe 6121, and the collection tank 612 is also connected to the feeding end of the bag collector 9 through the third material pipe 19, and the third material pipe 19 is provided with a tenth valve 191. The bag collector 9 is provided with a breathable bag for collecting crushed bodies and powders, and the third material pipe 19 is connected to the feeding port of the bag. When the powder inside the collection tank 612 is processed, the third air inlet pipe 17 introduces the gas of the compressor 1 into the distribution valve 67, and the distribution valve 67 introduces the gas into the collection tank 612 through the fifth air inlet pipe 6121, and uses high-pressure gas to blow the powder. The crushed bodies and powders can enter the bag collector 9 through the third material pipe 19, which is used to realize the timely collection of the crushed bodies and powders, and the gas overflows from the bag in the bag collector 9.

[0055] Furthermore, a plurality of sealing rods 613 are provided inside the collecting tank 612, and the sealing rods 613 match the sieve holes 641 on the feeding plate 64, and the sealing rods 613 can enter the sieve holes 641 to block the sieve holes 641, thereby achieving sealing above the collecting tank 612. When the molecular sieve particles are screened, the feeding plate 64 is located above the collecting tank 612, and the sealing rods 613 do not block the sieve holes 641; when the crushed bodies and powders inside the collecting tank 612 are processed, refer to Figure 6 The feeding plate 64 contacts the upper part of the collecting tank 612 , and the sealing rod 613 blocks the sieve hole 641 , thereby sealing the upper space of the collecting tank 612 and preventing the crushed body and powder from flowing upward to the inside of the circulation tank 6 .

[0056] A third elastic member 614 is disposed on the collecting tank 612 . The axis of the third elastic member 614 is parallel to the axis of the spiral sleeve 61 . The third elastic member 614 is used to support the feed plate 64 when the feed plate 64 performs molecular sieve particle screening.

[0057] The single-person oxygen concentrator in this embodiment includes the following working process:

[0058] (1) When used to produce oxygen. Figure 1 , the first material valve 141 and the second material valve 151 are both closed, the air outlet plate 215 is in the first position, and the air outlet plate 215 compresses the molecular sieve particles inside the adsorption tank. The air passes through the air filter 7 and enters the compressor 1. The compressor 1 compresses the filtered air to obtain high-pressure air. The high-pressure air passes through the pressure-stabilizing valve 8 and enters the first air guide pipe 11. The first adsorption tank 21 and the second adsorption tank 22 perform gas separation work alternately. Part of the oxygen obtained enters the gas storage tank 3 for storage, and part of the oxygen is used from the backflush pipe 13 to blow the desorbed nitrogen out from the exhaust pipe 16.

[0059] (2) When used for screening molecular sieve particles inside an adsorption tank (taking the first adsorption tank 21 as an example).

[0060] refer to Figure 7 , the feed plate 64 moves to the lower part of the discharge end of the first material pipe 14, and the feed plate 64 is located above the collecting tank 612, the sealing rod 613 does not block the sieve hole 641, and the third elastic member 614 supports the feed plate 64; the first valve body 2111 and the fourth valve body 2211 are closed, and the eighth valve 171, the ninth valve 181 and the tenth valve 191 are opened. The first material valve 141 and the second material valve 151 are opened, and part of the first molecular sieve particles 213 in the first adsorption tank 21 enter the circulation tank 6 and fall above the feed plate 64, and the first material valve 141 is closed. The third air inlet pipe 17 introduces the gas of the compressor 1 into the distribution valve 67, and the distribution valve 67 introduces the gas into the vibration cylinder 65 through the fourth air inlet pipe 655. The gas is discharged from the fourth air outlet pipe 656 and the exhaust pipe 16, thereby realizing the vibration of the vibration cylinder 65, and then the collecting tank 612, the feeding plate 64 and the spiral sleeve 61 are vibrated, and the first molecular sieve particles 213 are screened. The screened powder is collected by the collecting tank 612.

[0061] Screening completed, reference Figure 8 , the air outlet plate 215 moves to the second position, the air outlet plate 215 is located above the discharge end of the second material pipe 15, the rotating motor 621 drives the rotating rod 62 and the spiral sleeve 61 to rotate synchronously, and the feeding plate 64 moves upward along the axial direction of the spiral sleeve 61 until the feeding plate 64 moves to the feed end of the second material pipe 15, and the first molecular sieve particles 213 on the feeding plate 64 can enter between the air inlet plate 214 and the air outlet plate 215 from the second material pipe 15, and the first molecular sieve particles 213 move from the air inlet end of the first adsorption tank 21 to the air outlet end of the first adsorption tank 21, maintaining the adsorption energy efficiency of the molecular sieve particles at the air inlet end of the first adsorption tank 21.

[0062] After the screening is completed, the first material valve 141 and the second material valve 151 are both closed, and the gas outlet plate 215 returns to the first position to compact the molecular sieve particles inside the adsorption tank.

[0063] (3) Used for powder processing inside the collecting tank 612.

[0064] refer to Figure 6 , the feeding plate 64 moves to the lower part of the discharge end of the first material pipe 14, and the feeding plate 64 contacts the upper part of the collecting tank 612, and the sealing rod 613 blocks the sieve hole 641; the first valve body 2111, the fourth valve body 2211 and the ninth valve 181 are closed, and the eighth valve 171 and the tenth valve 191 are opened. The third air inlet pipe 17 introduces the gas of the compressor 1 into the distribution valve 67, and the distribution valve 67 introduces the gas into the collecting tank 612 through the fifth air inlet pipe 6121, and uses the high-pressure gas to blow the crushed body and powder, and the crushed body and powder can enter the third material pipe 19 and enter the bag collector 9, which is used to realize the timely collection of the crushed body and powder.

[0065] In this embodiment, the circulation tank 6 of the single-person oxygen concentrator is used to batch screen and transpose the molecular sieve particles inside the adsorption tank. Screening is used to remove the broken bodies and powders in the molecular sieve particles, maintain the overall adsorption effect and capacity of the molecular sieve, and reduce the probability of the powder entering the airway. Since the air inlet end of the adsorption tank first contacts the high-pressure gas, the molecular sieve particles at the air inlet end of the adsorption tank are more likely to accumulate dirt, residues and water vapor. The feeding plate 64 can move the screened molecular sieve particles from the air inlet end of the adsorption tank to the air outlet end. The molecular sieve in the middle or air outlet end of the adsorption tank is transposed to the air inlet end, which can maintain the adsorption efficiency of the molecular sieve air inlet end for water and dust. A collection tank 612 is also provided inside the circulation tank 6. The collection tank 612 collects the screened broken bodies and powders, and can use the high-pressure gas of the compressor to blow out the broken bodies and powders, so as to achieve timely treatment of the broken bodies and powders.

[0066] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-person oxygen concentrator, comprising at least an air filter for filtering air, a compressor for compressing the filtered air, an adsorption component for separating nitrogen and oxygen in the air, and a gas storage tank for storing the separated gas, wherein the adsorption component comprises two adsorption tanks, and the two adsorption tanks perform gas separation work alternately, characterized in that: A circulation tank is arranged between the two adsorption tanks, and the circulation tank is used to screen out the broken bodies and powders in the molecular sieve particles inside the adsorption tank, and to replace the screened molecular sieve particles; A spiral sleeve, a rotating rod and a feeding plate are arranged inside the circulation tank, the spiral sleeve and the rotating rod are arranged coaxially, the rotating rod is rotatably connected to the circulation tank, the spiral sleeve is sleeved on the outside of the rotating rod and is axially slidably connected to the rotating rod, a limit plate is fixedly arranged on the upper end of the spiral sleeve, a first elastic member is arranged between the limit plate and the rotating rod, and a collecting trough is fixedly arranged on the lower end of the spiral sleeve; the feeding plate is axially slidably connected to the circulation tank and is threadedly connected to the outside of the spiral sleeve, a sieve hole for screening molecular sieve particles is arranged on the feeding plate, and the feeding plate is located at Above the collecting tank, the edges of the feeding plate and the collecting tank are respectively in contact with the inner wall of the circulation tank, and a sealing rod matching the sieve hole on the feeding plate is provided inside the collecting tank, and the sealing rod is used to enter the sieve hole to achieve sealing above the collecting tank, and the collecting tank is provided with a third elastic member for supporting the feeding plate, and the axis of the third elastic member is arranged parallel to the axis of the spiral sleeve; a vibration cylinder is provided below the collecting tank, and the vibration cylinder is used to drive the collecting tank, the feeding plate and the spiral sleeve to vibrate in the axial direction to achieve the screening of the molecular sieve particles on the feeding plate; The circulation tank is connected to each of the adsorption tanks through a first material pipe and a second material pipe, the second material pipe is located above the first material pipe, the first material pipe is used for the molecular sieve particles to enter the circulation tank from the adsorption tank, and the second material pipe is used for the molecular sieve particles to enter the adsorption tank from the circulation tank.

2. The single-person oxygen concentrator according to claim 1, characterized in that: An air inlet plate and an air outlet plate are provided inside the adsorption tank, the air outlet plate is located above the air inlet plate, and the molecular sieve particles are located between the air inlet plate and the air outlet plate; the air inlet plate is fixedly connected to the adsorption tank, and the first material pipe is connected to the space above the air inlet plate; the air outlet plate is connected to the adsorption tank through a first functional cylinder, and the first functional cylinder is used to drive the air outlet plate to move in the axial direction of the adsorption tank, and when the adsorption tank performs gas separation work, the second material pipe is connected to the space above the air outlet plate; when the circulation tank is used to screen out the broken bodies and powders in the molecular sieve particles inside the adsorption tank, and to perform transposition work on the screened molecular sieve particles, the second material pipe is connected to the space between the air inlet plate and the air outlet plate.

3. The single-person oxygen concentrator according to claim 2, characterized in that: The vibration cylinder comprises a piston rod, a cylinder body, a piston located inside the cylinder body, a second elastic member and a limiting sleeve, the piston and the cylinder body are axially slidably connected, the lower end of the piston rod is fixedly connected to the piston, the upper end of the piston rod passes through the cylinder body and is connected to the bottom of the collecting tank, a second elastic member is arranged between the upper end of the piston and the cylinder body, and a limiting sleeve for limiting the piston is arranged below the piston; The cylinder body is connected with a fourth air inlet pipe and a fourth air outlet pipe, the connection point between the fourth air outlet pipe and the cylinder body is located above the connection point between the fourth air inlet pipe and the cylinder body, the fourth air inlet pipe is used to communicate with the lower space of the piston, and the fourth air outlet pipe is used to realize the gas discharge of the cylinder body; The gas enters the cylinder from below the piston and pushes the piston upward. When the piston is at the upper limit position, the fourth air inlet pipe is connected to the fourth air outlet pipe. Under the pressure of the second elastic member, the piston moves downward and returns to its original position. The piston reciprocates axially to form vibration.

4. The single-person oxygen concentrator according to claim 3, characterized in that: The air outlet end of the compressor is communicated with the collecting tank, and the collecting tank is also communicated with the feeding end of the bag collector through a third material pipe.

5. The single-person oxygen concentrator according to claim 4, characterized in that: A distribution valve is also provided inside the circulation tank, the first connector of the distribution valve is connected to the air outlet of the compressor through the third air inlet pipe, the second connector of the distribution valve is connected to the interior of the collection tank through the fifth air inlet pipe, and the third connector of the distribution valve is connected to the fourth air inlet pipe.

6. The single-person oxygen concentrator according to claim 5, characterized in that: The fourth air outlet pipe is connected to the exhaust pipe through the third air outlet pipe.

7. The single-person oxygen concentrator according to any one of claims 1-6, characterized in that: The first material pipe is provided with a first material valve, and the second material pipe is provided with a second material valve. Both the first material valve and the second material valve are electrically controlled valves.

8. The single-person oxygen concentrator according to any one of claims 1-6, characterized in that: The two adsorption tanks are combined and connected with the circulation tank through a combined bracket.

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