CN206417863U - Plateau disperse formula apparatus of oxygen supply - Google Patents
Plateau disperse formula apparatus of oxygen supply Download PDFInfo
- Publication number
- CN206417863U CN206417863U CN201720068019.9U CN201720068019U CN206417863U CN 206417863 U CN206417863 U CN 206417863U CN 201720068019 U CN201720068019 U CN 201720068019U CN 206417863 U CN206417863 U CN 206417863U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- adsorption tanks
- air
- enriched
- oxygen supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses a kind of plateau disperse formula apparatus of oxygen supply, the apparatus of oxygen supply includes oxygenerator structure and oxygen therapy mechanism, the oxygenerator structure includes the air blower of conveying air, the adsorption tanks of oxygen in separation oxygen air processed, and the oxygen-enriched tank of adsorption tanks output end is connected to, the oxygen therapy mechanism is oxygen-enriched disperser；The adsorption tanks be divided into above and below two layers of adsorption layer, load molecular sieve in upper strata, dehydrating agent loads in lower floor, oxygen air processed sends into adsorption tanks by air blower, from bottom to up by adsorption tanks, oxygen separation is carried out, the oxygen of formation flows into oxygen-enriched tank, the apparatus of oxygen supply also includes vavuum pump, the air blower and vavuum pump alternation.A kind of plateau disperse formula apparatus of oxygen supply disclosed in the utility model, without pressure pipeline or pressure vessel, to installing no particular/special requirement, using simple, has prevented the potential safety hazard that pressure pipeline is brought, and need not transport for long-distance, and production cost is low.
Description
Technical field
The utility model is related to a kind of apparatus of oxygen supply, and in particular to a kind of plateau disperse formula apparatus of oxygen supply.
Background technology
With the implementation of China's strategy to develop western regions, the appearance of the Belt and Road planning goes to western plateau to work and travel
People it is more and more, under environment of low oxygen plateau, anoxic can cause human body and human brain ability to work to decline, and height above sea level is higher, to people
Physiological function infringement it is bigger.
At present, oxygen-enriched space is set up using vaporization of liquid oxygen or PSA are oxygen-enriched more than conditional unit, but the long-distance fortune of liquid oxygen
Defeated inconvenience, and it is with high costs, PSA oxygen enrichers can be oxygen-enriched with in-situ generation, but for high altitude localities, air pressure is less than one
Individual standard atmospheric pressure, the power increase several times of PSA oxygen enrichers, use cost is higher than liquid oxygen, is not suitable for using in highlands, and
Small-sized PSA oxygen enrichers oxygen supply is influenceed greatly by low pressure, and high energy consumption, equipment scale is small, it is impossible to large area oxygen supply.
Therefore, in view of problem above, it is necessary to propose that one kind can realize large area oxygen supply under the atmospheric pressure state of plateau, and
And the low apparatus of oxygen supply of energy consumption, to better people's living environment.
Utility model content
In view of this, the utility model proposes a kind of plateau disperse formula apparatus of oxygen supply, the apparatus of oxygen supply includes oxygenerator
Structure and oxygen therapy mechanism, the oxygenerator structure include the air blower of conveying air, separate the adsorption tanks of oxygen in oxygen air processed, and
The oxygen-enriched tank of adsorption tanks output end is connected to, air is sent into adsorption tanks using air blower, is reached with this and separates sky at ambient pressure
Gas is so as to manufacture the purpose of oxygen.
Oxygenerator structure and oxygen therapy machine are included according to a kind of plateau disperse formula apparatus of oxygen supply that the purpose of this utility model is proposed
Structure, the oxygenerator structure includes the air blower of conveying air, separates the adsorption tanks of oxygen in oxygen air processed, and is connected to absorption
The oxygen-enriched tank of tank output end, the oxygen therapy mechanism is oxygen-enriched disperser, and the oxygen-enriched disperser is connected with the oxygen-enriched tank pipeline.
Two layers of adsorption layer above and below being divided into the adsorption tanks, upper strata is filled with molecular sieve, and lower floor is filled with dehydrating agent, oxygen processed
Air is from bottom to up by adsorption tanks, and the oxygen of formation flows into oxygen-enriched tank.
The apparatus of oxygen supply also includes vavuum pump, and the air blower is connected under adsorption tanks with vavuum pump by pipeline
Side, the air blower and vavuum pump alternation, during oxygen processed, oxygen air processed is delivered to adsorption tanks by air blower work, from absorption
The oxygen isolated in tank is exported to oxygen-enriched tank, when stopping oxygen processed, and vacuum pump work extracts the nitrogen isolated from adsorption tanks out
Gas.
It is preferred that, the adsorption tanks are two, respectively the first adsorption tanks and the second adsorption tanks, the adsorption tanks with it is described
Control valve is mounted on air blower and each pipeline of vavuum pump connection.
First adsorption tanks are respectively the first control valve with the control valve on the air blower and vavuum pump connecting pipe
With the second control valve, second adsorption tanks are respectively the 3rd control with the control valve on the air blower and vavuum pump connecting pipe
Valve processed and the 4th control valve；Two adsorption tanks continuously work, and alternately manufacture oxygen and extract the work of nitrogen out.
It is preferred that, current limiter is provided with the connecting pipe between the adsorption tanks and oxygen-enriched tank, oxygen is from adsorption tanks
Outflow flows into oxygen-enriched tank by current limiter.
It is preferred that, the oxygenerator structure with being provided with a pressure fan on oxygen therapy mechanism connection pipeline, the pressure fan it is defeated
Enter end and offer an air-in, the pressure fan simultaneously sucks the oxygen in oxygen-enriched tank and extraneous air, mixed diluting
After be delivered to oxygen therapy mechanism.
It is preferred that, a primary filter is provided with the air-in.
It is preferred that, cleaning device and humidity control apparatus are installed inside the primary filter.
It is preferred that, a ultraviolet-sterilization secondary filter is additionally provided with the connecting pipe of the pressure fan and oxygen-enriched disperser
Device.
It is preferred that, automatic water washing device is installed inside the ultraviolet-sterilization accurate filter.
It is preferred that, the control valve is check valve.
Compared with prior art, a kind of advantage of plateau disperse formula apparatus of oxygen supply is disclosed in the utility model：It is described to supply
Oxygen device includes oxygenerator structure and oxygen therapy mechanism, and the oxygenerator structure includes the air blower of conveying air, separated in oxygen air processed
The adsorption tanks of oxygen, and the oxygen-enriched tank of adsorption tanks output end is connected to, the oxygen therapy mechanism is oxygen-enriched disperser, described oxygen-enriched
Disperser is connected with the oxygen-enriched tank pipeline.The adsorption tanks be divided into above and below two layers of adsorption layer, upper strata filling molecular sieve, lower floor dress
Dehydrating agent is filled out, oxygen air processed sends into adsorption tanks by air blower, from bottom to up by adsorption tanks, carry out oxygen separation, the oxygen of formation
Gas flows into oxygen-enriched tank, in use, being exported by oxygen-enriched disperser.The apparatus of oxygen supply also include vavuum pump, the vavuum pump with
Air blower alternation.
The plateau disperse formula apparatus of oxygen supply is operated in atmospheric pressure state, and achievable in-situ generation is oxygen-enriched, solves liquid oxygen long
The problem of way transports inconvenient and with high costs.Meanwhile, the apparatus of oxygen supply does not have pressure pipeline or pressure vessel, does not have to installation
There is particular/special requirement, using simple, prevented the potential safety hazard that pressure pipeline is brought；And normal pressure oxygen, normal pressure oxygen supply, it is not necessary to it is right
Air is pressurized, and only air need to be transported to adsorption tanks, use cost only has a quarter of PSA pressure breathing oxygens.Institute
Stating apparatus of oxygen supply does not have consumable accessory, it is not necessary to cooling water and sealing water, throughout the year non-maintaining, is not required to the machine repair personnel with specialty.Institute
Adsorption tanks are stated for non-pressure vessel, air is from lower floor by adsorption tanks, and only faint air-flow does not impact to adsorption tanks, will not
The efflorescence of molecular sieve and dehydrating agent is caused, need not be changed throughout one's life.
Brief description of the drawings
For clearer explanation the utility model embodiment or the technical scheme of prior art, below will to embodiment or
The accompanying drawing used required in description of the prior art does simple introduction, it is clear that, drawings in the following description are only
Some embodiments of the present utility model, it will be clear to the skilled person that before creative work is not paid
Put, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structure chart of embodiment 1.
Fig. 2 is the structure chart of embodiment 2.
The title of parts in figure representated by digital or letter：
1st, air blower；2nd, vavuum pump；3rd, pressure fan；41st, the first adsorption tanks；42nd, the second adsorption tanks 5, molecular sieve；6th, it is dehydrated
Agent；7th, current limiter；8th, oxygen-enriched tank；9th, primary filter；10th, ultraviolet-sterilization accurate filter；111st, the first control valve；112nd,
Two control valves；113rd, the 3rd control valve；114th, the 4th control valve；12nd, oxygen-enriched disperser.
Embodiment
Embodiment of the present utility model is described briefly below in conjunction with the accompanying drawings.Obviously, described embodiment
Only a part of embodiment of the present utility model, rather than whole embodiments, based on the embodiment in the utility model, ability
The every other embodiment that domain those of ordinary skill is obtained on the premise of creative work is not made, belongs to this practicality
Novel protected scope.
Fig. 1 and Fig. 2 respectively illustrate the structural representation of the utility model embodiment 1 and embodiment 2, and structure is carried out
Detailed anatomy.
Embodiment 1
A kind of plateau disperse formula apparatus of oxygen supply as shown in Figure 1 includes oxygenerator structure and oxygen therapy mechanism, and oxygenerator structure includes
The air blower 1 of air is conveyed, the adsorption tanks of oxygen in oxygen air processed are separated, and is connected to the oxygen-enriched tank 8 of adsorption tanks output end,
Oxygen therapy mechanism is oxygen-enriched disperser 12, and oxygen-enriched disperser 12 is connected with the pipeline at output of oxygen-enriched tank 8.Oxygen air processed passes through air blast
Machine 1 sends into adsorption tanks, and the oxygen storage isolated is exported in oxygen-enriched tank 8 when using by oxygen-enriched disperser 12.
Two layers of adsorption layer above and below being divided into adsorption tanks, upper strata is filled with molecular sieve 5, and lower floor is filled with dehydrating agent 6, and oxygen processed is empty
Gas carries out oxygen separation from bottom to up by adsorption tanks, and the oxygen of formation directly flows into oxygen-enriched tank 8 by pipeline and stored.Molecule
Sieve 5 and dehydrating agent 6 can select the existing product in market, as long as oxygen requirement processed can be met, not require herein；And adsorption tanks
Quantity can be it is multiple, by specific implementation requirement depending on.
Apparatus of oxygen supply also includes the vavuum pump 2 to discharge the nitrogen that absorption is separated in adsorption tanks, air blower 1 and vavuum pump
2 by pipeline communication in the lower section of adsorption tanks, air blower 1 and the alternation of vavuum pump 2, during oxygen processed, the beginning work of air blower 1
Make, only need pressure-fired driving that oxygen air processed can be delivered in adsorption tanks, dehydrating agent 6 and molecular sieve 5 are passed through from adsorption tanks
The oxygen isolated is exported to oxygen-enriched tank 8；Oxygen processed stops oxygen processed afterwards for a period of time, and air blower 1 is stopped, and starts vavuum pump 2,
Only tiny structure need to be applied can extract the nitrogen being stored in adsorption tanks isolated in oxygen air processed out, after the completion of start air blower
1, so circulation oxygen processed.
Further, current limiter 7 is provided with the connecting pipe between adsorption tanks and oxygen-enriched tank 8, oxygen is from adsorption tanks
Outflow flows into oxygen-enriched tank 8 by current limiter 7.The current limiter 7 is mainly used in the speed of the oxygen of limitation outflow, it is to avoid oxygen-supplying amount ripple
It is dynamic, while effectively preventing back flow of gas in oxygen-enriched tank 8 to adsorption tanks.
Further, oxygenerator structure on oxygen therapy mechanism connection pipeline with being provided with a pressure fan 3, the input of pressure fan 3
Offer an air-in（It is not shown）, extraneous air passes through air-in（It is not shown）Into pressure fan 3, pressure fan 3
The oxygen in oxygen-enriched tank 8 and extraneous air are sucked simultaneously, oxygen therapy mechanism is delivered to after mixed diluting to finite concentration.Air is defeated
Entrance（It is not shown）Size depending on the oxygen-enriched volumetric concentration being actually needed, be not limited herein.
Further, air-in（It is not shown）Place is provided with a primary filter 9, to most in air
Impurity is removed, it is ensured that oxygen-enriched cleannes, while cleaning device and humidity control apparatus are installed inside primary filter 9, can
With the dust in effective cleaning filtering external air, and play a part of humidifying air.
Further, a ultraviolet-sterilization secondary filter is additionally provided with the connecting pipe of pressure fan 3 and oxygen-enriched disperser 12
Device 10, with this to the oxygen-enriched carry out sterilizing that is exported in pressure fan 3, and filters out the particulate matter more than PM0.001, output is clear
Clean oxygen-enriched air.Automatic water washing device is installed inside ultraviolet-sterilization accurate filter 10 simultaneously, filter can be carried out automatically
Maintenance and cleaning, it is not necessary to often safeguard, use manpower and material resources sparingly.
Embodiment 2
As shown in Fig. 2 remaining is same as Example 1, difference is, the adsorption tanks are two, respectively first
Pacify on the adsorption tanks 42 of adsorption tanks 41 and second, each pipeline that the adsorption tanks are connected with the air blower 1 and vavuum pump 2
Equipped with control valve.
First adsorption tanks 41 are respectively the first control with the control valve on the air blower 1 and the connecting pipe of vavuum pump 2
The control valve 112 of valve 111 and second processed, second adsorption tanks 42 and the control on the air blower 1 and the connecting pipe of vavuum pump 2
Valve is respectively the 3rd control valve 113 and the 4th control valve 114；Two adsorption tanks continuously work, and alternately manufacture oxygen and take out
Go out the work of nitrogen.
Specific works state is：Under air blower 1 and the working condition of vavuum pump 2, four control valves two are in open shape
State, two are closed.When the first control valve 111 and the 3rd control valve 113 are opened, the first adsorption tanks 41 are in vavuum pump
Extract the nitrogen of separation in the presence of 2 out, the second adsorption tanks 42 carry out oxygen work processed in the presence of air blower 1；When the second control
When the control valve 114 of valve 112 and the 4th is opened, the first adsorption tanks 41 carry out oxygen work processed, the second absorption in the presence of air blower 1
Tank 42 extracts the nitrogen of separation out in the presence of vavuum pump 2.The oxygen work alternately processed of two adsorption tanks, is effectively guaranteed richness
Oxygen-supplying amount in oxygen tank 8.
Further, four control valves are check valve, prevent gas backstreaming.
In summary, a kind of plateau disperse formula apparatus of oxygen supply disclosed in the utility model includes oxygenerator structure and oxygen therapy machine
Structure, oxygenerator structure includes the air blower 1 of conveying air, separates the adsorption tanks of oxygen in oxygen air processed, and is connected to adsorption tanks
The oxygen-enriched tank 8 of output end, oxygen therapy mechanism is oxygen-enriched disperser 12, and oxygen-enriched disperser 12 is connected with the oxygen-enriched pipeline of tank 8.
Wherein adsorption tanks be divided into above and below two layers of adsorption layer, upper strata filling molecular sieve 5, lower floor filling dehydrating agent 6, oxygen air processed
Adsorption tanks are sent into by air blower 1, from bottom to up by adsorption tanks, oxygen separation are carried out, the oxygen of formation flows into oxygen-enriched tank 8, made
Used time is exported by oxygen-enriched disperser 12.Apparatus of oxygen supply also includes vavuum pump 2, air blower 1 and the oxygen alternately processed of vavuum pump 2 and
Take out the work of nitrogen.
In addition, adsorption tanks are two, two adsorption tanks alternations endlessly carry out oxygen work processed.
Disperse formula apparatus of oxygen supply in plateau is operated in atmospheric pressure state, and achievable in-situ generation is oxygen-enriched, solves the long-distance fortune of liquid oxygen
Defeated inconvenient and with high costs the problem of.Meanwhile, apparatus of oxygen supply does not have pressure pipeline or pressure vessel, is wanted to installing without special
Ask, using simple, prevented the potential safety hazard that pressure pipeline is brought；And normal pressure oxygen, normal pressure oxygen supply, it is not necessary to air is carried out
Supercharging, only need to be transported to air adsorption tanks, use cost only has a quarter of PSA pressure breathing oxygens.Apparatus of oxygen supply does not have
There is consumable accessory, it is not necessary to cooling water and sealing water, it is throughout the year non-maintaining, the machine repair personnel with specialty is not required to, substantial amounts of manpower is saved
Material resources.In addition, adsorption tanks are non-pressure vessel, air is from lower floor by adsorption tanks, and only faint air-flow is not rushed to adsorption tanks
Hit, do not result in the efflorescence of molecular sieve and dehydrating agent, need not change throughout one's life, save the energy.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize and new using this practicality
Type.A variety of modification modes to these embodiments will be apparent for those skilled in the art, herein
Defined General Principle can be real in other embodiments in the case where not departing from spirit or scope of the present utility model
It is existing.Therefore, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to original disclosed herein
The reason most wide scope consistent with features of novelty.
Claims (9)
1. a kind of plateau disperse formula apparatus of oxygen supply, it is characterised in that the apparatus of oxygen supply includes oxygenerator structure and oxygen therapy mechanism, institute
Stating oxygenerator structure includes the air blower of conveying air, separates the adsorption tanks of oxygen in oxygen air processed, and to be connected to adsorption tanks defeated
Go out the oxygen-enriched tank at end, the oxygen therapy mechanism is oxygen-enriched disperser, and the oxygen-enriched disperser is connected with the oxygen-enriched tank pipeline；
Two layers of adsorption layer above and below being divided into the adsorption tanks, upper strata is filled with molecular sieve, and lower floor is filled with dehydrating agent, oxygen air processed
From bottom to up by adsorption tanks, the oxygen of formation flows into oxygen-enriched tank；
The apparatus of oxygen supply also includes vavuum pump, and the air blower is connected to the lower section of adsorption tanks with vavuum pump by pipeline,
The air blower and vavuum pump alternation, during oxygen processed, oxygen air processed is delivered to adsorption tanks, from adsorption tanks by air blower work
The oxygen inside isolated is exported to oxygen-enriched tank, when stopping oxygen processed, and vacuum pump work extracts the nitrogen isolated from adsorption tanks out.
2. a kind of plateau disperse formula apparatus of oxygen supply according to claim 1, it is characterised in that the adsorption tanks are two,
On respectively the first adsorption tanks and the second adsorption tanks, each pipeline that the adsorption tanks are connected with the air blower and vavuum pump
It is mounted on control valve；
Control valve on first adsorption tanks and the air blower and vavuum pump connecting pipe is respectively the first control valve and the
Two control valves, second adsorption tanks are respectively the 3rd control valve with the control valve on the air blower and vavuum pump connecting pipe
With the 4th control valve；Two adsorption tanks continuously work, and alternately manufacture oxygen and extract the work of nitrogen out.
3. a kind of plateau disperse formula apparatus of oxygen supply according to claim 1 or 2, it is characterised in that the adsorption tanks and richness
Current limiter is provided with connecting pipe between oxygen tank, oxygen flows out from adsorption tanks flows into oxygen-enriched tank by current limiter.
4. a kind of plateau disperse formula apparatus of oxygen supply according to claim 1 or 2, it is characterised in that the oxygenerator structure with
A pressure fan is provided with oxygen therapy mechanism connection pipeline, the input of the pressure fan offers an air-in, described to send
Blower fan simultaneously sucks the oxygen in oxygen-enriched tank and extraneous air, and oxygen therapy mechanism is delivered to after mixed diluting.
5. a kind of plateau disperse formula apparatus of oxygen supply according to claim 4, it is characterised in that set at the air-in
It is equipped with a primary filter.
6. a kind of plateau disperse formula apparatus of oxygen supply according to claim 5, it is characterised in that inside the primary filter
Cleaning device and humidity control apparatus are installed.
7. a kind of plateau disperse formula apparatus of oxygen supply according to claim 4, it is characterised in that the pressure fan and it is oxygen-enriched more
A ultraviolet-sterilization accurate filter is provided with the connecting pipe for dissipating device.
8. a kind of plateau disperse formula apparatus of oxygen supply according to claim 7, it is characterised in that the accurate mistake of the ultraviolet-sterilization
Automatic water washing device is installed inside filter.
9. a kind of plateau disperse formula apparatus of oxygen supply according to claim 2, it is characterised in that the control valve is unidirectional
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068019.9U CN206417863U (en) | 2017-01-20 | 2017-01-20 | Plateau disperse formula apparatus of oxygen supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068019.9U CN206417863U (en) | 2017-01-20 | 2017-01-20 | Plateau disperse formula apparatus of oxygen supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206417863U true CN206417863U (en) | 2017-08-18 |
Family
ID=59571563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720068019.9U Active CN206417863U (en) | 2017-01-20 | 2017-01-20 | Plateau disperse formula apparatus of oxygen supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206417863U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110787383A (en) * | 2019-11-20 | 2020-02-14 | 中南大学 | A disperse apparatus of oxygen supply for high altitude area |
-
2017
- 2017-01-20 CN CN201720068019.9U patent/CN206417863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110787383A (en) * | 2019-11-20 | 2020-02-14 | 中南大学 | A disperse apparatus of oxygen supply for high altitude area |
| CN110787383B (en) * | 2019-11-20 | 2021-05-07 | 中南大学 | A disperse apparatus of oxygen supply for high altitude area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205550848U (en) | High -efficient traditional chinese medicine wind selector | |
| CN205867415U (en) | Body -building apparatus and system oxygen system, oxygenerator thereof | |
| CN203564662U (en) | Filtration breathing machine | |
| CN207002253U (en) | A kind of high-efficiency oxygen generator | |
| CN206417863U (en) | Plateau disperse formula apparatus of oxygen supply | |
| CN202464834U (en) | Totally-closed conveying and dedusting device for fine-grained powder | |
| CN207286933U (en) | A kind of molding powder device for recovering powder | |
| CN206323853U (en) | A kind of improved lazyboot's flowerpot | |
| CN203833245U (en) | Automatic calcium powder feeding device | |
| CN208057157U (en) | A kind of Novel lifesaving capsule for mine | |
| CN206288522U (en) | A kind of waste oil conveying arrangement for preventing from rocking | |
| CN207081189U (en) | A kind of air interchanger for being applicable elevator | |
| CN206688391U (en) | Middle effect composite air filtering bag | |
| CN207203834U (en) | A kind of agricultural greenhouse hen house ammonia decontamination device | |
| CN206701654U (en) | A kind of agalloch eaglewood grain sieving machine | |
| CN205988488U (en) | A kind of dust-proof rebreather | |
| CN206064364U (en) | Reactor vacuum intaking device | |
| CN205199187U (en) | Circulation formula water curtain filter module with liquid level detection function | |
| CN213333301U (en) | Utilize think political affairs education of network platform with propaganda device | |
| CN209474159U (en) | A kind of sofa with moisture absorption apparatus | |
| CN201652675U (en) | Float net air purification humidifier | |
| CN207596864U (en) | Nitrobacteria culture apparatus | |
| CN206359305U (en) | A kind of integrated form water distribution distribution device | |
| CN207137682U (en) | Recirculating fluidized bed desulphurization system | |
| CN206413402U (en) | Air pressure fertilizer applicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |