CN2787239Y

CN2787239Y - Molecular sieve PSA oxygen machine for medical and healthcare use

Info

Publication number: CN2787239Y
Application number: CN 200520090453
Authority: CN
Inventors: 欧阳才峰; 黄克敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-22
Filing date: 2005-04-22
Publication date: 2006-06-14
Anticipated expiration: 2015-04-22

Abstract

The utility model discloses a molecular sieve PSA oxygen machine used for medical care, which has the characteristics of high oxygen recovery, low production cost, safe and reliable oxygen concentration and direct use for the medical care. The utility model comprises an air compressor, a high temperature oil separator, an automatic drainage filter, an electromagnetic reversing valve, molecular sieve absorbers in an automatic drying type, a buffer tank, a voltage stabilizing throttle valve and a one-way valve, wherein the air compressor, the high temperature oil separator, a cooling device, the automatic drainage filter, the one-way valve are connected with a compressed air inlet a of the electromagnetic reversing valve in series; air inlets of the two molecular sieve absorbers in the automatic drying type are respectively connected with a port c and a port d of the electromagnetic reversing valve, and air outlets are connected with a nitrogen outlet by the one-way valve. The buffer tank, the voltage-stabilizing throttle valve, a flow meter, a humidifier and an enriched oxygen outlet are connected with an enriched oxygen air outlet b of the electromagnetic reversing valve in series. The concentration of the discharged rich oxygen is from 35% to 45% when the utility model analyzes so as to be especially suitable for manufacturing oxygen for the medical care.

Description

Medical health care oxygen machine with molecular sieve PSA

Technical field:

This utility model relates to the medical health apparatus technical field, exactly is a kind of medical health care oxygen machine with molecular sieve PSA.

Background technology:

Because people to the concern of environmental quality and the raising of health care consciousness, more and more pay attention to the use of oxygen machine.At present, in the oxygen preparation process, generally adopt zeolite molecular sieve as adsorbent, after compressed air entered adsorber, zeolite molecular sieve absorption nitrogen was discharged oxygen, and oxygen concentration can reach more than 90%, the nitrogen-rich gas concentration of discharging during parsing is about 93%, and all the other about 7% are oxygen; Unstripped gas and gas production ratio are that oxygen recovery rate is relatively low between 6/1 to 7/1.Because system oxygen technology is to the specific (special) requirements of compressed air gas source, air compressor must provide purified, as not contain a lubricating oil microgranule and oil vapour compressed air gas source, so, in overwhelming majority system oxygen technology, all utilize non-lubricated compressor that compressed air gas source is provided; But, and utilize self-lubricating material such as filling graphite lubricated because all friction width of cloth all do not adopt oil lubrication in the non-lubricated compressor.So non-lubricated compressor is compared with oil lubricating compressor is arranged, not only to lack service life, maintenance cost is big, the cycle is short, the use cost height, and also ubiquity, and power consumption is big, noise is high, price is high, the shortcoming of machine life weak point.Thereby caused the raising of the overall cost of oxygen generation system.In addition, all do not have the compressed air dehydrating unit in the existing small-sized oxygen generating plant, thereby reduce the service life of molecular sieve, a year of product assurance longest-lived, the shortest ability 3000 hours, but also wanted change once in 1000 hours.Accompanying drawing 2 is above-mentioned system oxygen process charts, among the figure: 1, air intake filter, 2, non-lubricated compressor, 3, cooler, 4, automatic drain filter, 5, check valve, 6, solenoid directional control valve, 7, the zeolite molecular sieve adsorber, 8, choke valve, 9, check valve, 10, surge tank, 11, choke valve, 12, effusion meter, 13, humidifier, 14, the oxygen rich air air vent, 15, the nitrogen air vent.Because existing system oxygen technology all is to adopt transformation absorption (PSA) mode system oxygen, the air-flow instability that its air-flow cyclically-varying is brought also is one of distinct issues comparatively.

Oxygen is widely used in each every profession and trade such as industry, medical treatment, health care, diving, oxygen supplement, and the purposes difference requires also to be not quite similar to concentration of oxygen.In health care industry, medically the regulation concentration of oxygen inhalation must not be higher than 45%, otherwise will produce oxygen intoxication or form dependency, so the high-concentration oxygen that above-mentioned oxygen machine produced can not directly smoke, if under unwitting situation, directly smoke, to produce serious consequence, and have only to be diluted to high-concentration oxygen below 45% and to guarantee that the stable of air-flow could use safely.As seen, the stable problem of accurately grasping concentration of oxygen and solving air-flow in health care industry is very important.As use above-mentioned technological process to prepare medical oxygen not only to have safety problem, also can improve use cost, and can bring a lot of inconvenience to user.

Summary of the invention:

The purpose of this utility model is exactly to solve the deficiency that exists among the existing oxygen preparation technology, provides a kind of oxygen recovery rate height, equipment power dissipation and use cost is low, the medical health care oxygen machine with molecular sieve PSA of product utilization rate height, air feed steady air current.

This purpose of this utility model is to realize like this, medical health care oxygen machine with molecular sieve PSA comprises, air intake filter, air compressor, the high temperature oil separator, automatic drain filter, solenoid directional control valve, the self-drying type molecular sieve adsorber, surge tank, voltage stabilizing choke valve and check valve, air intake filter (1) is installed in the front end of air compressor (2), it is characterized in that: air compressor (2), high temperature oil separator (3), cooler (4), automatic drain filter (5), check valve (6) coupled in series is on the compressed air inlet a of solenoid directional control valve (7), the air inlet of two self-drying type molecular sieve adsorbers (8) connects with the c mouth and the d mouth of solenoid directional control valve (7) respectively, the gas outlet is connected on the nitrogen air vent (11) through check valve (10), on the pipeline between two gas outlets choke valve (9) is housed, surge tank (16), voltage stabilizing choke valve (15), effusion meter (14), humidifier (13) and oxygen rich air air vent (12) coupled in series are on the b of the oxygen rich air gas outlet of solenoid directional control valve (7), by the timing conversion of solenoid directional control valve (7), the air inlet of two self-drying type molecular sieve adsorbers (8) is changed between compressed air inlet a and oxygen rich air gas outlet b respectively.Self-drying type molecular sieve adsorber (8) comprises adsorber tube, dividing plate, screen cloth, 13X molecular sieve, molecular sieve and spring, lower clapboard (68), lower screen cloth (67), upper screen cloth (70), upper spacer (71) and spring (61) are installed in the adsorber tube (65) from bottom to up, the adsorber lid (69) that joint (62) is housed is installed in the two ends of adsorber tube (65), between adsorber lid (69) and the adsorber tube (65) sealing ring (63) is housed, 13X molecular sieve (66) and molecular sieve (64) are filled between lower screen cloth (67) and the upper screen cloth (70) from bottom to up.

Compared with prior art, this utility model adopts molecular sieve as adsorbent, adsorption of oxygen is discharged oxygen nitrogen during pressurization, nitrogen gas concn reaches more than 99.9%, the oxygen recovery rate height, unstripped gas and gas production are than between 3/1 to 4/1, and the oxygen rich air concentration of discharging during parsing is about 35%-45%, can be directly used in health care; The oil lubricating compressor use of connecting with the high temperature oil separator is arranged, and it is short to have solved the non-lubricated compressor life-span, the problem that power consumption is big, noise is high, machine life is short; Outfan adopts the voltage stabilizing choke valve, can make exhaust airstream stable and the influence that not changed by the transformation adsorptive pressure is used safer; After having increased cooler and automatic drain filter, the most of moisture in the high temperature air that compressor can be discharged is discharged, and absorb remaining small amount of moisture through the self-drying type molecular sieve adsorber again, can increase substantially the service life of molecular sieve, prolongs the replacement cycle.

Description of drawings:

Fig. 1 is a connecting relation sketch map of the present utility model.

Fig. 2 is common prior art connecting relation sketch map.

Fig. 3 is the structural representation of high temperature oil separator 3.

Fig. 4 is the structural representation of voltage stabilizing choke valve 15.

Fig. 5 is the structural representation of self-drying type molecular sieve adsorber 8.

The specific embodiment:

Embodiment 1:

As shown in Figure 1, air intake filter 1 in this utility model, air compressor 2, cooler 4, automatic drain filter 5, solenoid directional control valve 7, choke valve 9, surge tank 16, effusion meter 14, humidifier 13 and several check valves all can adopt normal component of the prior art.

High temperature oil separator 3 as shown in Figure 3 can be set directly in the housing 33 of air compressor 2, air inlet 34 on the air compressor 2 links with air intake filter 1, gas outlet 29 connects with cooler 4, air compressor compressed air outlet 32 is connected on the barrel of cylindrical shell 25, water fender 31 is installed in the cylindrical shell 25, gas outlet, top 29 is stretched out above cylindrical shell 25 and is utilized nut 30 with cylindrical shell 25, casing 33 and water fender 31 tighten together, filter element 27 is sleeved on the outer rim of water fender 31 bottoms, between the inwall of water fender 31 and filter element 27 and cylindrical shell 25 sealing gasket 28 is housed, cyclone blade 26 is sleeved on outside the filter element 27, the following intracavity of cylindrical shell 25 is equipped with floating drum 24, and the lower port of cylindrical shell 25 is sealed with bottom 22 that is provided with oil return opening 21 and sealing ring 23.Cylindrical shell 25 available metal sheet materials are made through punching press, and air compressor compressed air outlet 32 is along on the barrel that tangentially is welded on cylindrical shell 25 of cylindrical shell 25 inwalls, and gas outlet 29 connects cooler 4.Water fender 31, cyclone blade 26 and bottom 22 can adopt metal material to make through machined, filter element 27 can adopt standard oil strain device, sealing gasket 28 and sealing ring 23 should adopt oil resistant, resistant to elevated temperatures rubber packing material, and floating drum 24 available metal sheet materials are made through welding.After filter element 27, cyclone blade 26, sealing gasket 28 are sleeved on the water fender 31 successively,, stretch out the circular hole of gas outlet 29 above cylindrical shell 25 on top and tighten with nut 30 from the back cavity of cylindrical shell 25 cylindrical shell 25 of packing into; Again floating drum 24 is packed into the back cavity of cylindrical shell 25; Load onto sealing ring 23, load onto bottom 22 at last, and the outer rim of bottom 22 is rolled, is pressed on the barrel of cylindrical shell 25 and seal.For ease of dismounting, the also available screw of bottom 22 is installed on the barrel of cylindrical shell 25.

During work, air enters compressor by air inlet 34, high temperature and high pressure gas after compression is compressed air outlet slit 32 tangentially entering in the cylindrical shell 25 along cylindrical shell 25 inwalls and cyclone blade 26 under uncooled state, form vortical flow, in action of centrifugal force, the lubricating oil microgranule major part in the compressed air is separated.Compressed air further filters through filter element 27 again, just becomes purified, oil-free compressed air, is transported in the no oily air supply system through water fender 31 and gas outlet 29 and goes.The lubricating oil of separating flows to cylindrical shell 25 cavity of resorptions along the inwall of cylindrical shell 25, when harvesting certain altitude floating drum 24 is floated, and the oil return opening on bottom 22 21 comes back in the compressor and goes.

The structure of voltage stabilizing choke valve 15 as shown in Figure 4, valve casing 42 is provided with air inlet 45 and gas outlet 47, the guiding valve 54 that is provided with air inlet restriction mouth 44 is installed in the valve casing 42, the nut 57 that regulator bolts 59 is housed is fixed on an end of valve casing 42, pressure spring 55 is installed between guiding valve 54 and the regulator bolts 59, sealing ring 43 and 53 are housed on the guiding valve 54, valve casing 42 is provided with overfall 41, locknut 58 is housed on the regulator bolts 59, be provided with the restriction 46 of giving vent to anger in the valve casing 42, the nut 48 that throttle valve lever 49 is housed is fixed on the other end of valve casing 42, and sealing ring 51 and locknut 50 are housed on the throttle valve lever 49.Valve casing 42, guiding valve 54, regulator bolts 59, nut 57, throttle valve lever 49 and nut 48 all can adopt metal material to obtain through machined; Sealing ring 43,51 and 53, pressure spring 55, locknut 50 and 58 and packing ring 56 can use standard component.When overfall 41 position on valve casing 42 should guarantee that guiding valve 54 slides left not with its sealing; Nut 57 and 48 is packed into behind the valve casing 42, uses screw or key both are fixed together; Throttle valve lever 49 should be concentric with the restriction 46 of giving vent to anger, with the stability that guarantees that air-flow is adjusted; Sealing ring 43 can adopt " Y " RunddichtringO, and 51 and 53 can adopt " O " RunddichtringO; Packing ring 56 is that 52 is air chamber for the stability that increases pressure spring 55 is provided with.Air inlet 45 links with surge tank 16, gas outlet 7 links with effusion meter 14.As shown in Figure 4, compressed air enters from air inlet 45, and in air inlet restriction mouth 44 entered air chamber 52, through the adjustment passage of the formation between restriction 46 and the throttle valve lever 49 of giving vent to anger, 47 got rid of from the gas outlet again; Utilize throttle valve lever 49 can adjust the size of entraining air stream, adjust the back and throttle valve lever 49 is locked with locknut 50.When the air pressure in supply pressure fluctation, the air chamber 52 reaches certain value, act on the elastic force that pressure on the guiding valve 54 overcomes pressure spring 55, promote guiding valve 54 and be moved to the left, the air in guiding valve 54 left chambeies is discharged from overfall 41; At this moment air inlet restriction mouth 44 staggers mutually with the position of air inlet 45, the sectional area of air inlet restriction mouth 44 diminishes gradually, air inflow also reduces thereupon, during when the pressure balance of air chamber 52 internal pressures and setting, promptly with the Spring balanced of pressure spring 55, guiding valve 54 stops to move, and makes air chamber 52 internal pressures keep stable.Force value in the air chamber 52 relies on regulator bolts 59 to set, and spring 55 is compressed tight more, and the pressure set points in the air chamber 52 is just high more; With locknut 58 regulator bolts 59 is locked after the pressure adjustment.In the work process, guiding valve 54 will horizontally slip along with the fluctuation of source of the gas air pressure, thereby guarantee the stable of air pressure of giving vent to anger.

The structure of self-drying type molecular sieve adsorber 8 as shown in Figure 5, lower clapboard 68, lower screen cloth 67, upper screen cloth 70, upper spacer 71 and spring 61 are installed in the adsorber tube 65 from bottom to up, 13X molecular sieve 66 and molecular sieve 64 are filled between lower screen cloth 67 and the upper screen cloth 70 from bottom to up, the adsorber lid 69 that joint 62 is housed is installed in the two ends of adsorber tube 65, between adsorber lid 69 and the adsorber tube 65 sealing ring 63 is housed.Last lower clapboard 68 and 71, last lower screen cloth 67 and 70, spring 61, joint 62, adsorber lid 69, sealing ring 63 can adopt prior art.During work, compressed air enters adsorber tube 65 through joint 62, compressed air at first flows through water absorbing agent 13X molecular sieve 66, after residual water adsorption, flow through sorbent molecule sieve 64 again, molecular sieve adsorption oxygen (the tonnage oxygen molecular sieve is as adsorbents adsorb nitrogen), nitrogen (when adopting the tonnage oxygen molecular sieve as adsorbent is oxygen) is discharged from joint 62 through upper screen cloth 70, upper spacer 71, the spring 61 on top; In bottom joint 62 was input to surge tank 16, the moisture of the remnants that water absorbing agent 13X molecular sieve 66 is absorbed parsed oxygen rich gas during parsing (when adopting the tonnage oxygen molecular sieve as adsorbent is oxygen rich gas) simultaneously.

At last, according to the connecting relation shown in the accompanying drawing 1, all parts are fitted together get final product.

During system works, air enters air compressor 2 through air intake filter 1, become clean no oil gas body behind the oil-containing high temperature compressed air process high temperature oil separator 3 of discharging, after cooler 4 coolings, most of condensed water is discharged again by automatic drain filter 5, compressed air after cold the doing enters the left side jar of self-drying type adsorber 8 through check valve 6, solenoid directional control valve 7, compressed air is earlier got rid of remaining moisture again by the carbon molecular sieve adsorption of oxygen through water absorbing agent 13X molecular sieve, and concentration is that 99.9% nitrogen is discharged through check valve 10 and nitrogen air vent 11; Simultaneously right jar of self-drying type adsorber 8 is in the parse state, and concentration is that the oxygen rich gas of 35%-45% is in solenoid directional control valve 7 enters surge tank 16.After right jar resolving finishes, solenoid directional control valve 7 actions, compressed air enters right jar of self-drying type molecular sieve adsorber 8, and a left side jar resolving begins, and discharges oxygen.Be oxygen rich gas that the cycle changes and after the 15 voltage stabilizing throttlings of voltage stabilizing choke valve, form pressure stability, state that flow is adjustable,,, use for consumer from 12 outputs of oxygen rich air air vent through effusion meter 14, humidifier 13.Part nitrogen is resolved in the jar to the self-drying type molecular sieve adsorber through choke valve 9 blowbacks, can play the effect that improves the molecular sieve utilization rate and increase oxygen recovery rate.

Claims

1, medical health care oxygen machine with molecular sieve PSA, it comprises air intake filter, air compressor, the high temperature oil separator, automatic drain filter, solenoid directional control valve, the self-drying type molecular sieve adsorber, surge tank, voltage stabilizing choke valve and check valve, air intake filter (1) is installed in the front end of air compressor (2), it is characterized in that: air compressor (2), high temperature oil separator (3), cooler (4), automatic drain filter (5), check valve (6) coupled in series is on the compressed air inlet a of solenoid directional control valve (7), the air inlet of two self-drying type molecular sieve adsorbers (8) connects with the c mouth and the d mouth of solenoid directional control valve (7) respectively, the gas outlet is connected on the nitrogen air vent (11) through check valve (10), surge tank (16), voltage stabilizing choke valve (15), effusion meter (14), humidifier (13) and oxygen rich air air vent (12) coupled in series are on the b of the oxygen rich air gas outlet of solenoid directional control valve (7).

2, a kind of medical health care oxygen machine with molecular sieve PSA according to claim 1 is characterized in that: on the pipeline between two self-drying type molecular sieve adsorber gas outlets choke valve (9) is housed.

3, the self-drying type molecular sieve adsorber that a kind of medical health care oxygen machine with molecular sieve PSA as claimed in claim 1 is used, comprise the adsorber tube, dividing plate, screen cloth, the 13X molecular sieve, molecular sieve and spring, lower clapboard (68), lower screen cloth (67), upper screen cloth (70), upper spacer (71) and spring (61) are installed in the adsorber tube (65) from bottom to up, the adsorber lid (69) that joint (62) is housed is installed in the two ends of adsorber tube (65), between adsorber lid (69) and the adsorber tube (65) sealing ring (63) is housed, it is characterized in that: the interior molecular sieve of adsorber tube (65) is divided into two-layer, one deck is 13X molecular sieve (66), one deck is molecular sieve (64), is filled in from bottom to up between lower screen cloth (67) and the upper screen cloth (70).