CN114849422A - A multilayer molecular sieve section of thick bamboo for oxygen concentrator - Google Patents
A multilayer molecular sieve section of thick bamboo for oxygen concentrator Download PDFInfo
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- CN114849422A CN114849422A CN202210674164.7A CN202210674164A CN114849422A CN 114849422 A CN114849422 A CN 114849422A CN 202210674164 A CN202210674164 A CN 202210674164A CN 114849422 A CN114849422 A CN 114849422A
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- molecular sieve
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- 239000002808 molecular sieve Substances 0.000 title claims abstract description 94
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 94
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 title claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 26
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 title claims description 5
- 241001330002 Bambuseae Species 0.000 title claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims description 5
- 239000011425 bamboo Substances 0.000 title claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 65
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000010457 zeolite Substances 0.000 claims abstract description 65
- 238000005192 partition Methods 0.000 claims abstract description 29
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 150000001768 cations Chemical group 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0438—Cooling or heating systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
- C01B13/0262—Physical processing only by adsorption on solids characterised by the adsorbent
- C01B13/027—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/12—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
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- Oil, Petroleum & Natural Gas (AREA)
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a multilayer molecular sieve cylinder for an oxygen concentrator, which comprises a cylinder body, a first flow guide cover component, a partition plate component and a second flow guide cover component, wherein the first flow guide cover component, the partition plate component and the second flow guide cover component are arranged in the cylinder body, the first flow guide cover component comprises a first flow guide cover and a first flow equalizing plate, one end of the first flow guide cover is provided with an air inlet nozzle and a first radial flow passage, the first flow equalizing plate covers the first radial flow passage, the partition plate component comprises a partition plate, a water-absorbing zeolite molecular sieve is filled between the partition plate and the first flow equalizing plate, the second flow guide cover component comprises a second flow guide cover and a second flow equalizing plate, one end of the second flow guide cover is provided with an air outlet and a second radial flow passage, the air inlet nozzle and the air outlet are communicated with the outside of the cylinder body, the second flow equalizing plate covers the second radial flow passage, and a zeolite molecular sieve is filled between the partition plate and the second flow equalizing plate. The invention has the advantages of uniform and stable airflow in the cylinder, slowing down the pulverization speed of the zeolite molecular sieve impacted by the airflow, avoiding the humidification of the zeolite molecular sieve, prolonging the service life of the zeolite molecular sieve and the like.
Description
Technical Field
The invention belongs to the technical field of oxygen concentrators, and particularly relates to a multilayer molecular sieve cylinder for an oxygen concentrator.
Background
The oxygen concentrator is a common oxygen collecting device, and the working principle of the oxygen concentrator is that a zeolite molecular sieve is used as an adsorbent, and nitrogen in air is adsorbed and released by utilizing the principles of pressurized adsorption and reduced pressure desorption, so that oxygen collection and concentration improvement are completed. The zeolite molecular sieve has super strong adsorption performance and strong adsorption performance because molecular attraction acts on a 'surface force' generated on the surface of a solid, when a fluid flows through the zeolite molecular sieve, some molecules in the fluid collide the surface of an adsorbent due to irregular movement, molecular concentration is generated on the surface, and the number of the molecules in the fluid is reduced to the purposes of separation and removal. Since the adsorption does not change chemically, the zeolite molecular sieve has the adsorption capacity as long as the molecules concentrated on the surface are tried to be driven away, and the process is the reverse process of the adsorption and is called a desorption or regeneration process. Zeolitic molecular sieves also have strong ion exchange properties, which refer to a process of compensating for cation exchange outside the framework. The pore size of zeolite molecular sieves can be changed by ion exchange to change their properties. After ion exchange, the number, size and position of cations are changed, for example, after high-valence cations exchange low-valence cations, the number of cations in the zeolite molecular sieve is reduced, and the position is always vacant, so that the pore diameter of the zeolite molecular sieve is enlarged; and after the ions with larger radius exchange the ions with smaller radius, the holes are easy to be blocked to a certain extent, so that the effective aperture begins to be reduced.
The molecular sieve cylinder of the existing oxygen concentrator has the following defects: zeolite molecular sieves are susceptible to wetting leading to failure; airflow inside the sieve cylinder is uneven, and the zeolite molecular sieve in the cylinder is easy to be impacted by airflow to accelerate the pulverization speed due to overlarge airflow; the zeolite molecular sieve has a short service life.
Disclosure of Invention
The invention aims to solve the problems in the background art, and provides a multilayer molecular sieve cylinder for an oxygen concentrator, which can ensure that the air flow in the cylinder is uniform and stable, slow down the pulverization speed of a zeolite molecular sieve impacted by the air flow, avoid the humidification of the zeolite molecular sieve, ensure the gas separation efficiency and prolong the service life of the zeolite molecular sieve.
In order to achieve the purpose, the invention provides a multilayer molecular sieve cylinder for an oxygen concentrator, which comprises a cylinder body, a first flow guide cover component, a partition plate component and a second flow guide cover component, wherein the first flow guide cover component, the partition plate component and the second flow guide cover component are arranged in the cylinder body, the first flow guide cover component comprises a first flow guide cover and a first flow equalizing plate, the front side and the back side of the first flow guide cover component, which are far away from the second flow guide cover component, are respectively provided with an air inlet nozzle and a first radial flow channel communicated with the air outlet end of the air inlet nozzle, the air inlet end of the air inlet nozzle is communicated with the outside of the cylinder body, the first flow equalizing plate covers the first radial flow channel, the partition plate component comprises a partition plate with an air port, water-absorbing zeolite molecular sieves are filled between the partition plate and the first flow equalizing plate, the back side of the second flow guide cover component comprises a second flow guide cover and a second flow equalizing plate, the front side and the back side of the second flow guide cover component, which are far away from the first flow guide cover component, are respectively provided with an air outlet hole and a plurality of second radial flow channels, the air outlet hole is communicated with the outside of the cylinder, the second flow equalizing plate covers the second radial flow channel, and a zeolite molecular sieve is filled between the partition plate and the second flow equalizing plate.
Preferably, a first end cover and a second end cover are respectively installed at two ends of the barrel, an air inlet and an air outlet are respectively formed in the first end cover and the second end cover, the air inlet nozzle is communicated with the air inlet, a spring is sleeved on the outer side of the air inlet nozzle, two ends of the spring abut against the first end cover and the first flow guide cover, and the air outlet hole is communicated with the air outlet.
Preferably, the outer side of the air inlet nozzle is sleeved with silencing cotton, and the spring is sleeved on the outer side of the silencing cotton.
Preferably, the end of giving vent to anger of suction nozzle is equipped with the round hole cambered surface along the inlet end direction diameter grow of keeping away from the suction nozzle, the cross sectional area of first radial runner is along the end direction grow gradually of giving vent to anger of keeping away from the suction nozzle, the inlet end of suction nozzle is equipped with a plurality of inlet turbulence holes.
Preferably, a baffle is arranged at the position, opposite to the air outlet of the air inlet nozzle, of the first flow equalizing plate.
Preferably, the water-absorbing zeolite molecular sieve is a sodium-based zeolite molecular sieve, and the particle diameter of the sodium-based zeolite molecular sieve is 0.5-1 mm.
Preferably, the zeolite molecular sieve is a lithium-based zeolite molecular sieve, and the particle diameter of the lithium-based zeolite molecular sieve is 0.3-0.9 mm.
Preferably, the partition plate assembly further comprises a screen, the screen is arranged at one end of the partition plate close to the water-absorbing zeolite molecular sieve, and the mesh diameter of the screen is smaller than the particle diameter of the water-absorbing zeolite molecular sieve.
Preferably, the number of the holes of the first flow equalizing plate and the second flow equalizing plate is 300-800 meshes.
Preferably, the cylinder body is made of aluminum alloy, the cross section of the cylinder body is formed by connecting a plurality of straight line sections and arc-shaped sections, and sealing gaskets are arranged between the first flow guide cover and the partition plate and between the second flow guide cover and the cylinder body.
The invention has the beneficial effects that: according to the invention, the water-absorbing zeolite molecular sieve is arranged in the cylinder body, so that trace water in the gas is absorbed by the water-absorbing zeolite molecular sieve, and when negative pressure analysis is carried out, as the atmospheric pressure is reduced, the evaporation temperature of the water is reduced, trace moisture absorbed by the water-absorbing zeolite molecular sieve is quickly evaporated and is pumped out of the molecular sieve cylinder by the vacuum pump, so that the humidification of the lower zeolite molecular sieve is avoided, and the gas separation efficiency is ensured; through setting up first kuppe subassembly and second kuppe subassembly, first kuppe subassembly and second kuppe subassembly all include kuppe and flow equalizing plate, the kuppe sets up radial runner and flow equalizing plate and can make the air current of flow to zeolite molecular sieve even steady relatively, the area of radial runner gradually changes from inside to outside, through the change adjustment air flow velocity of cross-sectional area, and then make the air current in the section of thick bamboo even steady, slow down the pulverization speed that zeolite molecular sieve receives the air current impact, improve zeolite molecular sieve's life.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a left side cross-sectional view of an embodiment of the invention.
Fig. 3 is a schematic view of a cartridge in accordance with an embodiment of the present invention.
FIG. 4 is a schematic view of a first dome assembly according to an embodiment of the present invention.
Fig. 5 is a disassembled schematic view of the first dome assembly according to the embodiment of the present invention.
FIG. 6 is a sub-schematic view of a first pod assembly according to an embodiment of the present invention.
FIG. 7 is a schematic exploded view of a baffle plate assembly according to an embodiment of the present invention.
FIG. 8 is a schematic view of a baffle plate assembly according to an embodiment of the present invention.
Fig. 9 is a disassembled view of the second dome assembly according to the embodiment of the present invention.
In the figure: the device comprises a barrel 1, a first guide cover component 2, a partition plate component 3, a second guide cover component 4, a water-absorbing zeolite molecular sieve 5, a zeolite molecular sieve 6, a spring 7, a silencing cotton 8, a sealing gasket 9, a first end cover 11, a second end cover 12, a first guide cover 21, a first flow equalizing plate 22, a partition plate 31, a screen 32, a second guide cover 41, a second flow equalizing plate 42, an air inlet nozzle 210, an air inlet disturbance 211, a first radial flow channel 212, a first separating strip 213, an air outlet 410, a second radial flow channel 411 and a second separating strip 412.
Detailed Description
Referring to fig. 1 to 9, the present embodiment provides a multi-layer molecular sieve cartridge for an oxygen concentrator, including a cartridge body 1, a first flow guiding cap assembly 2 installed inside the cartridge body 1, a partition plate assembly 3 and a second flow guiding cap assembly 4, wherein the first flow guiding cap assembly 2 includes a first flow guiding cap 21 and a first flow equalizing plate 22, front and back surfaces of the first flow guiding cap 21 are respectively provided with an air inlet 210 and a plurality of first radial flow channels 212 radially and outwardly diffused with an air outlet of the air inlet 210 as a center, an air inlet of the air inlet 210 is communicated with an outside of the cartridge body 1, the first flow equalizing plate 22 covers the first radial flow channels 212, the partition plate assembly 3 includes a partition plate 31 with an air inlet, a water-absorbing zeolite molecular sieve 5 is filled between the partition plate 31 and the first flow equalizing plate 22, the second flow guiding cap assembly 4 includes a second flow guiding cap 41, a second flow equalizing plate 42, and a lower end of the second flow guiding cap 41 is arranged in a right position, The reverse side is respectively provided with an air outlet 410 and a plurality of second radial flow channels 411 which are radially and outwardly diffused by taking the air outlet 410 as a center, the air outlet 410 is communicated with the outside of the cylinder 1, the second flow equalizing plate 42 covers the second radial flow channels 411, and the zeolite molecular sieve 6 is filled between the partition plate 31 and the second flow equalizing plate 42.
The first diversion cover assembly 2 is located above the second diversion cover assembly 4, the middle part of the lower end of the first diversion cover 21 and the middle part of the upper end of the second diversion cover 41 are both provided with a concave cavity, the first radial flow channel 212 is formed by a first separation strip 213 vertically extending downwards from the reverse side of the upper end of the first diversion cover 21 and enclosing the inner wall of the first diversion cover 21, the bottom surface of one end of the first separation strip 213 is tangent with the end surface of the air outlet end of the air inlet nozzle 210, the second radial flow channel 411 is formed by a second separation strip 412 vertically extending upwards from the reverse side of the lower end of the second diversion cover 41 and enclosing the inner wall of the second diversion cover 41, the first flow equalizing plate 22 is installed in the concave cavity of the first diversion cover 21 and in surface contact with the first separation strip 213, and the second flow equalizing plate 42 is installed in the concave cavity of the second diversion cover 41 and in surface contact with the second separation strip 412.
The upper and lower ends of barrel 1 install first end cover 11 and second end cover 12 respectively, first end cover 11 and second end cover 12 are equipped with air inlet and gas outlet respectively, suction nozzle 210 is linked together with the air inlet, suction nozzle 210 outside cover is equipped with spring 7, first end cover 11 and first water conservancy diversion lid 21 are supported at the both ends of spring 7, venthole 410 is linked together with the gas outlet, the upper and lower end and first end cover 11 of barrel 1, be equipped with sealed the pad between the second end cover 12, make the whole leakproofness of multilayer molecular sieve section of thick bamboo good, spring 7 provides the clearance that flexible compensation can eliminate the wearing and tearing of molecular sieve granule and produce in order to overcome the cavitation erosion and wear, guarantee the compactness that the molecular sieve was filled.
The cover in the suction nozzle 210 outside is equipped with amortization cotton 8, and spring 7 suit reduces the noise that admits air and produce in the cotton 8 outside of amortization.
The end of giving vent to anger of suction nozzle 210 is equipped with along the round hole cambered surface that the inlet end direction diameter of keeping away from suction nozzle 210 becomes big gradually, the cross sectional area of first radial runner 212 is along the end direction of giving vent to anger of keeping away from suction nozzle 210 grow gradually, the inlet end of suction nozzle 210 is equipped with a plurality of inlet turbulence holes 211, the end of giving vent to anger of suction nozzle 210 is for being close to the one end of first flow equalizer 22, inlet turbulence hole 211 plays certain regulatory action to the gas flow rate and the pressure that get into suction nozzle 210, the round platform cavity makes in gaseous steady flow in each first radial runner 212, guarantee the uniform and stable nature of air current.
The position of the first flow equalizing plate 22 opposite to the air outlet of the air inlet nozzle 210 and the position of the second flow equalizing plate 42 opposite to the air outlet 410 are provided with baffle plates, and when the gas flows to the baffle plates, the gas turns to flow into the first radial flow channel 212 and the second radial flow channel 411, so that the uniformity of the gas flow is further improved, and the pulverization of the molecular sieve is reduced.
The water absorption type zeolite molecular sieve 5 adopts a sodium-based zeolite molecular sieve, the particle diameter of the sodium-based zeolite molecular sieve is 0.5-1 mm, trace water in gas is further ensured to be absorbed by the sodium-based zeolite molecular sieve, when negative pressure circulation is carried out, the evaporation temperature of the water is reduced due to reduction of atmospheric pressure, and trace moisture absorbed by the sodium-based zeolite molecular sieve is quickly evaporated and pumped out of the sieve cylinder by a vacuum pump.
The zeolite molecular sieve 6 is a lithium-based zeolite molecular sieve, the particle diameter of the lithium-based zeolite molecular sieve is 0.3-0.9 mm, and the zeolite molecular sieve has a good nitrogen adsorption effect.
The partition plate assembly 3 further comprises a screen 32, the screen 32 is installed at one end of the partition plate 31 close to the water-absorbing zeolite molecular sieve 5, the mesh diameter of the screen 32 is smaller than the particle diameter of the water-absorbing zeolite molecular sieve 5, the screen 32 is arranged to effectively prevent the molecular sieve from reversely leaking, and the air inlet flow is changed into air flow in planar distribution.
The number of the holes of the first flow equalizing plate 22 and the second flow equalizing plate 42 is 300-800 meshes, so that the molecular sieve does not leak out.
The cylinder body 1 is made of aluminum alloy, the cross section of the cylinder body 1 is formed by connecting a plurality of straight line sections and arc sections, the sealing gaskets 9 are arranged between the first flow guide cover 21 and the partition plate 31 and between the second flow guide cover 41 and the cylinder body 1, the cylinder body 1 has good hardness and is not easy to rust, and the sealing gaskets 9 play a role in sealing and isolating up and down to enable the molecular sieve cylinder to have good air tightness.
The working process of the invention is as follows:
during the working process of the multilayer molecular sieve cylinder, when pressurized adsorption is carried out, compressed gas flows in from the air inlet nozzle 210 and flows to each first radial flow channel 212 along the arc surface of the circular hole, then the compressed gas passes through the first flow equalizing plate 22 to enable the gas flow to uniformly and stably flow to the water-absorbing type zeolite molecular sieve 5, the water-absorbing type molecular sieve 5 absorbs moisture in the gas flow, then the dried gas flow passes through the screen 32 and flows to the lithium-based zeolite molecular sieve, the lithium-based zeolite molecular sieve effectively absorbs nitrogen components in the gas flow to enable main components of the gas flow to be changed into oxygen, the oxygen flows out of the cylinder body 1 from the air outlet 410 and the air outlet after being equalized by the second flow equalizing plate 42 and the second radial flow channel 411, oxygen collection is completed, and when negative pressure desorption is carried out, nitrogen adsorbed by the lithium-based zeolite molecular sieve and moisture adsorbed by the water-absorbing type zeolite molecular sieve 5 are released again under the action of a vacuum pump and discharged from the air inlet nozzle 210.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (10)
1. A multilayer molecular sieve section of thick bamboo for oxygen concentrator, includes barrel, its characterized in that: the first flow guide cover component comprises a first flow guide cover and a first flow equalizing plate, wherein the front side and the back side of the first flow guide cover, which are far away from the second flow guide cover component, are respectively provided with an air inlet nozzle and a first radial flow channel communicated with the air outlet end of the air inlet nozzle, the air inlet end of the air inlet nozzle is communicated with the outside of the cylinder, the first flow equalizing plate covers the first radial flow channel, the baffle plate component comprises a baffle plate with an air port, a water-absorbing zeolite molecular sieve is filled between the baffle plate and the first flow equalizing plate, the second flow guide cover component comprises a second flow guide cover and a second flow equalizing plate, the front side and the back side of the second flow guide cover, which are far away from the first flow guide cover component, are respectively provided with an air outlet and a plurality of second radial flow channels, the air outlet is communicated with the outside of the cylinder, and the second flow equalizing plate covers the second radial flow channels, and a zeolite molecular sieve is filled between the partition plate and the second flow equalizing plate.
2. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the air inlet structure is characterized in that a first end cover and a second end cover are respectively installed at two ends of the barrel body, an air inlet and an air outlet are respectively formed in the first end cover and the second end cover, the air inlet nozzle is communicated with the air inlet, a spring is sleeved on the outer side of the air inlet nozzle, two ends of the spring abut against the first end cover and the first flow guide cover, and the air outlet hole is communicated with the air outlet.
3. The multi-layered molecular sieve cartridge for an oxygen concentrator of claim 2, wherein: the cover is equipped with the amortization cotton outside the suction nozzle, the spring suit is in the amortization cotton outside.
4. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the end of giving vent to anger of suction nozzle is equipped with the round hole cambered surface along the inlet end direction diameter grow of keeping away from the suction nozzle, the cross sectional area of first radial runner is along the end direction grow gradually of giving vent to anger of keeping away from the suction nozzle, the inlet end of suction nozzle is equipped with a plurality of inlet air disturbed flow holes.
5. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: and a baffle is arranged at the position, opposite to the air outlet of the air inlet nozzle, of the first flow equalizing plate.
6. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the water-absorbing zeolite molecular sieve is a sodium-based zeolite molecular sieve, and the particle diameter of the sodium-based zeolite molecular sieve is 0.5-1 mm.
7. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the zeolite molecular sieve is a lithium-based zeolite molecular sieve, and the particle diameter of the lithium-based zeolite molecular sieve is 0.3-0.9 mm.
8. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the partition plate assembly further comprises a screen, the screen is installed at one end, close to the water-absorbing zeolite molecular sieve, of the partition plate, and the mesh diameter of the screen is smaller than the particle diameter of the water-absorbing zeolite molecular sieve.
9. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the number of the holes of the first flow equalizing plate and the second flow equalizing plate is 300-800 meshes.
10. The multi-layer molecular sieve cartridge for an oxygen concentrator of claim 1, wherein: the barrel is made of aluminum alloy, the cross section of the barrel is formed by connecting a plurality of straight line sections and arc-shaped sections, and sealing gaskets are arranged between the first diversion cover and the partition plate and between the second diversion cover and the barrel.
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| CN202210674164.7A CN114849422A (en) | 2022-06-15 | 2022-06-15 | A multilayer molecular sieve section of thick bamboo for oxygen concentrator |
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| CN202210674164.7A CN114849422A (en) | 2022-06-15 | 2022-06-15 | A multilayer molecular sieve section of thick bamboo for oxygen concentrator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115608109A (en) * | 2022-10-12 | 2023-01-17 | 江苏宏博气体装备科技有限公司 | Molecular sieving equipment for nitrogen-oxygen production |
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