CN107939704A - A kind of piping shaft portable ventilation equipment wind turbine - Google Patents
A kind of piping shaft portable ventilation equipment wind turbine Download PDFInfo
- Publication number
- CN107939704A CN107939704A CN201711091131.5A CN201711091131A CN107939704A CN 107939704 A CN107939704 A CN 107939704A CN 201711091131 A CN201711091131 A CN 201711091131A CN 107939704 A CN107939704 A CN 107939704A
- Authority
- CN
- China
- Prior art keywords
- blower housing
- wind turbine
- ventilation equipment
- connecting tube
- commutator transformer
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0673—Battery powered
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of piping shaft portable ventilation equipment wind turbine, including air inlet pipe, blower housing, connecting tube and flexible ajutage, the blower housing inner wall center is fixedly connected with connecting plate, the connecting plate is fixedly connected with fixing sleeve away from blower housing one end, fixation is plugged with driving motor inside the fixing sleeve, the driving motor power output terminal is installed with fan blade, and fixing sleeve is connected to the public circle of clamping to the blower housing air intake respectively with outlet air end outer wall；Two sides outer wall center has been respectively fixedly connected with shell fixed plate at the top of the blower housing, the present invention at the top of blower housing by being installed with commutator transformer, enable user in outside work by accessing the power supply of the storage battery that voluntarily carries or electric car, the low-voltage DC that the power supply of the storage battery voluntarily carried or electric car exports is converted to the direct current of 24V using commutator transformer, with the operating voltage of this 24V direct current for coordinating driving motor needs.
Description
Technical field
The present invention relates to municipal pipeline technical field, is specially a kind of piping shaft portable ventilation equipment wind turbine.
Background technology
Pipeline be with pipe, pipe connector and valve etc. be connected into be used for convey gas, liquid or with solid particle
Fluid device.In general, fluid flows to low pressure after the supercharging such as air blower, compressor, pump and boiler at the high pressure of pipeline
Place, can also be used pressure or the gravity conveying of fluid itself.Having many uses for pipeline is general, be used primarily in feedwater, draining, heat supply,
Give gas, in long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.
Pipeline ventilation machine, that is, pipeline fan, due to some municipal pipelines（Such as：Sewer pipe, gas pipeline etc.）Inside exists
Dangerous gas, needs to enter inside pipeline, therefore when staff needs and such pipeline is checked, repaired
Need to be diluted the harm gas inside pipeline using pipeline ventilation machine, make its discharge, in order to safeguard work personnel's
Safety.
But traditional pipeline ventilation machine is in use there are some drawbacks, such as：
1st, the pipeline ventilation machine for pipe ventilated air draft on the market uses heavy-duty motor mostly, and operating method is complicated, and
Traditional pipe ventilated equipment needs the AC power supply using 220V, but the place of service conduits is more in outdoor, electricity consumption ratio
It is more difficult, it is not convenient to use.
2nd, on the market the pipeline ventilation machine equipment volume for pipe ventilated air draft is larger, quality is larger and mostly whole
Body is installed, and it is extremely inconvenient to transport when in use.
The content of the invention
It is an object of the invention to provide a kind of piping shaft portable ventilation equipment wind turbine, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical solution：A kind of piping shaft portable ventilation equipment wind turbine, bag
Air inlet pipe, blower housing, connecting tube and flexible ajutage are included, the blower housing inner wall center is fixedly connected with connecting plate, institute
State connecting plate and be fixedly connected with fixing sleeve away from blower housing one end, fixing sleeve inside fixation is plugged with driving motor, institute
State driving motor power output terminal and be installed with fan blade, the blower housing air intake is distinguished fixedly sleeved with outlet air end outer wall
There is the public circle of clamping；Two sides outer wall center has been respectively fixedly connected with shell fixed plate at the top of the blower housing, outside the wind turbine
Shell outer wall top center is installed with commutator transformer, and the commutator transformer two bottom sides face outer wall center is fixed respectively to be connected
Commutator transformer fixed plate is connected to, the shell fixed plate is fixedly mounted with commutator transformer fixed plate by screw；It is described
Commutator transformer input terminal is electrically connected with plug, and the commutator transformer output terminal is electrically connected with driving motor；It is described into
Tracheae one end inner wall, which is fixed, offers clamping mother set, and the air inlet pipe is actively socketed on wind turbine by being clamped the public circle of mother set and clamping
Outside shell air intake；Described connecting tube one end inner wall, which is fixed, offers clamping mother set, the connecting tube by be clamped mother set with
The public circle of clamping is actively socketed on outside blower housing outlet air end；The connecting tube is away from one end external stability where clamping mother set
Flexible ajutage is socketed with, the flexible ajutage is socketed in the external stability of connecting tube one end and is socketed with dead ring, the fastening
Fastening bolt is threaded between ring, the flexible ajutage is fixedly connected by dead ring, fastening bolt with connecting tube, institute
State flexible ajutage and be fixedly connected with air outlet away from connecting tube one end.
Further, at the top of the blower housing vertical baffle is fixedly connected between commutator transformer.
Further, the public circle of the clamping is manufactured using rubber material.
Further, the commutator transformer is fixedly mounted on wind turbine by commutator transformer fixed plate and shell fixed plate
Cover top portion.
Further, the blower housing is air outlet positioned at the opening of driving motor power output extreme direction, another
The opening at end is air inlet.
Further, fixation offers two fastening thread holes respectively at dead ring two sides center.
Further, the air inlet pipe, blower housing, connecting tube and dead ring are manufactured using PVC material.
Further, the flexible ajutage is manufactured using polypropylene material.
Further, the commutator transformer input voltage is DC 36V-96V, and output voltage is DC 24V.
Further, the driving motor operating voltage is DC 24V.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, by being installed with commutator transformer at the top of blower housing so that user can be by connecing in outside work
Enter the power supply of the storage battery voluntarily carried either electric car using commutator transformer by the storage battery voluntarily carried or electric car
The low-voltage DC of power supply output be converted to the High Level AC Voltage of 220V, the 220V alternating currents of driving motor needs are coordinated with this
Operating voltage.
2nd, due to, by being clamped public circle, clamping mother set, being flexibly connected, making between blower housing and blast pipe, connecting tube
Obtaining can be dismantled between blower housing, blast pipe, connecting tube, and flexible ajutage can stretch, and the length after contraction is shorter,
Transport is carried easy to user to use.
Brief description of the drawings
Fig. 1 is the overall fractionation structural representation of the present invention；
Fig. 2 is blower housing main structure diagram of the present invention；
Fig. 3 is blower housing overlooking the structure diagram of the present invention；
Fig. 4 is blower housing schematic cross-sectional view of the present invention；
Fig. 5 is connecting tube schematic cross-sectional view of the present invention；
Fig. 6 is air inlet pipe schematic cross-sectional view of the present invention.
In Fig. 1-6：1- air inlet pipe；2- blower housings；3- commutator transformers；4- connecting tubes；5- fastening bolts；6- outlet air
Mouthful；7- stretches ajutage；8- dead rings；9- plugs；The public circle of 10- clampings；11- vertical baffles；12- commutator transformer fixed plates；
13- shell fixed plates；14- connecting plates；15- drives motor；16- fixing sleeves；17- fan blades；18- is clamped mother set；19- fastening threads
Hole.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
- 6 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of piping shaft portable ventilation equipment wind turbine, including
Air inlet pipe 1, blower housing 2, connecting tube 4 and flexible ajutage 7, the 2 inner wall center of blower housing are fixedly connected with connecting plate
14, the connecting plate 14 is fixedly connected with fixing sleeve 16 away from 2 one end of blower housing, and the inside of fixing sleeve 16 fixation is plugged with
Motor 15 is driven, driving 15 power output end of motor is installed with fan blade 17,2 air intake of blower housing and outlet air
Fixing sleeve is connected to the public circle 10 of clamping to end outer wall respectively；The 2 top two sides outer wall center of blower housing has been respectively fixedly connected with
Shell fixed plate 13, the 2 outer wall top center of blower housing are installed with commutator transformer 3,3 bottom of commutator transformer
Portion two sides outer wall center has been respectively fixedly connected with commutator transformer fixed plate 12, the shell fixed plate 13 and commutator transformer
Fixed plate 12 is fixedly mounted by screw；3 input terminal of commutator transformer is electrically connected with plug 9, the direct current transformation
3 output terminal of device is electrically connected with driving motor 15；1 one end inner wall of the air inlet pipe, which is fixed, offers clamping mother set 18, it is described into
Tracheae 1 is actively socketed on outside 2 air intake of blower housing by being clamped the public circle 10 of mother set 18 and clamping；Described 4 one end of connecting tube
Inner wall, which is fixed, offers clamping mother set 18, and the connecting tube 4 is actively socketed on wind turbine by being clamped the public circle 10 of mother set 18 and clamping
Outside 2 outlet air end of shell；The connecting tube 4 is socketed with flexible ajutage 7 away from one end external stability where clamping mother set 18,
The flexible ajutage 7 is socketed in 4 one end external stability of connecting tube and is socketed with dead ring 8, is threadedly coupled between the dead ring 8
There is fastening bolt 5, the flexible ajutage 7 is fixedly connected by dead ring 8, fastening bolt 5 with connecting tube 4, and described stretch is sent
Air hose 7 is fixedly connected with air outlet 6 away from 4 one end of connecting tube.
, can be by direct current by being fixedly connected with vertical baffle 11 between the top of blower housing 2 and commutator transformer 3
Transformer 3 is separated with blower housing 2, prevents that fever influences direct current transformation when the driving motor 15 inside blower housing 2 from working
3 performance of device, is manufactured by the public circle 10 of the clamping using rubber material, easy to make blower housing 2 using the non-skid property of rubber
It is connected even closer, will not drops easily, since the commutator transformer 3 is become by direct current between blast pipe 1, connecting tube 4
Depressor fixed plate 12 is fixedly mounted on the top of blower housing 2 with shell fixed plate 13 so that the installation of commutator transformer 3 is more
Firmly, it is not easy to come off, the opening that driving 15 power output extreme direction of motor is located at by the blower housing 2 is outlet air
Mouthful, the opening of the other end is air inlet, avoids user by air inlet pipe 1 and 4 direction setup error of connecting tube, by it is described tightly
Gu fixation offers two fastening thread holes 19 respectively at ring 8 two sides center, it is easy to use screw to pass through fastening thread hole 19
It is more firm by what is fixed between flexible ajutage 7 and connecting tube 4, pass through the air inlet pipe 1, blower housing 2,4 and of connecting tube
Dead ring 8 is manufactured using PVC material, is made the present invention lighter, is easy to carry about with one, and cost is relatively low, is sent by described stretch
Air hose 7 is manufactured using polypropylene material so that flexible ajutage 7 is cheap, durable, passes through the commutator transformer 3
Input voltage is DC 36V-96V, and output voltage is DC 24V, easy to by commutator transformer 3 by storage battery or electric car
The voltage conversion of power source internal is DC 24V DC voltages, convenient to power to driving motor 15, passes through driving 15 work of motor
It is DC 24V to make voltage, and 3 output voltage of commutator transformer can be coordinated to use, and protection driving motor 15 works.
Wherein, the casing that ajutage 7 can also use PVC sandwich weaved materials and Cowhells fabric to sew that stretches uses.
Wherein, the commutator transformer 3 can also use inverter to use, the storage battery for specially voluntarily carrying user
Or the direct current of the power supply DC 36-96V of electric car is converted into AC 220V by inverter and exchanges electricity output use so that this
The i.e. accessible direct current of invention, which uses and can access alternating current, to be used.
Meanwhile user can according to the present invention use environment determine the driving motor 15 of installation for direct current generator or
For one kind in alternating current generator, since the output area value of commutator transformer 3 exports AC for DC 12V-24V or using inverter
220V, therefore can be used using motor of the operating voltage in this value range.
Operation principle：By the way that plug 9 is plugged on the power supply of storage battery that user voluntarily carries or electric car, profit
The low-voltage DC that the power supply of the storage battery voluntarily carried or electric car exports is converted into driving motor with commutator transformer 3
The 15 DC 24V direct currents that can be used, so as to be used for the driving power supply of motor 15 so that user is in outdoor maintenance pipe
Also power supply can be easily found when road, it is easy to use；In use, flexible ajutage 7 is passed through blowing five inside pipeline
Minute or so can effectively dilute or discharge line inside pernicious gas, therefore can safeguard work personnel go into the well work
Safety；Due to enclosing 10, clamping mother set 18 by being clamped public affairs between blower housing 2 and blast pipe 1, connecting tube 4, it is flexibly connected,
So that can be dismantled between blower housing 2, blast pipe 1, connecting tube 4, and flexible ajutage 7 can stretch, the length after contraction
Degree is shorter, and carrying transport easy to user uses.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of piping shaft portable ventilation equipment wind turbine, including air inlet pipe（1）, blower housing（2）, connecting tube（4）With it is flexible
Ajutage（7）, it is characterised in that：The blower housing（2）Inner wall center is fixedly connected with connecting plate（14）, the connecting plate
（14）Away from blower housing（2）One end is fixedly connected with fixing sleeve（16）, the fixing sleeve（16）Inside fixation is plugged with driving
Motor（15）, the driving motor（15）Power output end is installed with fan blade（17）, the blower housing（2）Air intake with
Fixing sleeve is connected to the public circle of clamping to outlet air end outer wall respectively（10）；The blower housing（2）Top two sides outer wall center is solid respectively
Surely it is connected with shell fixed plate（13）, the blower housing（2）Outer wall top center is installed with commutator transformer（3）, institute
State commutator transformer（3）Two bottom sides face outer wall center has been respectively fixedly connected with commutator transformer fixed plate（12）, the shell
Fixed plate（13）With commutator transformer fixed plate（12）It is fixedly mounted by screw；The commutator transformer（3）Input terminal electricity
Property is connected with plug（9）, the commutator transformer（3）Output terminal and driving motor（15）It is electrically connected；
The air inlet pipe（1）One end inner wall is fixed and offers clamping mother set（18）, the air inlet pipe（1）By being clamped mother set（18）
With the public circle of clamping（10）It is actively socketed on blower housing（2）Outside air intake；
The connecting tube（4）One end inner wall is fixed and offers clamping mother set（18）, the connecting tube（4）By being clamped mother set（18）
With the public circle of clamping（10）It is actively socketed on blower housing（2）Outside outlet air end；The connecting tube（4）Away from clamping mother set（18）Institute
One end external stability be socketed with flexible ajutage（7）, the flexible ajutage（7）It is socketed in connecting tube（4）Outside one end
Fixing sleeve is connected to dead ring（8）, the dead ring（8）Between be threaded with fastening bolt（5）, the flexible ajutage（7）
Pass through dead ring（8）, fastening bolt（5）With connecting tube（4）It is fixedly connected, the flexible ajutage（7）Away from connecting tube（4）One
End is fixedly connected with air outlet（6）.
A kind of 2. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The blower housing
（2）Top and commutator transformer（3）Between be fixedly connected with vertical baffle（11）.
A kind of 3. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The public circle of clamping
（10）Manufactured using rubber material.
A kind of 4. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The direct current transformation
Device（3）Pass through commutator transformer fixed plate（12）With shell fixed plate（13）It is fixedly mounted on blower housing（2）Top.
A kind of 5. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The blower housing
（2）Positioned at driving motor（15）The opening of power output extreme direction is air outlet, and the opening of the other end is air inlet.
A kind of 6. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The dead ring
（8）Fixation offers two fastening thread holes respectively at two sides center（19）.
A kind of 7. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The air inlet pipe
（1）, blower housing（2）, connecting tube（4）And dead ring（8）Manufactured using PVC material.
A kind of 8. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The flexible air-supply
Pipe（7）Manufactured using polypropylene material.
A kind of 9. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The direct current transformation
Device（3）Input voltage is DC 36V-96V, and output voltage is DC 24V.
A kind of 10. piping shaft portable ventilation equipment wind turbine according to claim 1, it is characterised in that：The driving electricity
Machine（15）Operating voltage is DC 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091131.5A CN107939704A (en) | 2017-11-08 | 2017-11-08 | A kind of piping shaft portable ventilation equipment wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091131.5A CN107939704A (en) | 2017-11-08 | 2017-11-08 | A kind of piping shaft portable ventilation equipment wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107939704A true CN107939704A (en) | 2018-04-20 |
Family
ID=61934484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711091131.5A Pending CN107939704A (en) | 2017-11-08 | 2017-11-08 | A kind of piping shaft portable ventilation equipment wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062603A1 (en) * | 2020-09-25 | 2022-03-31 | 苏州纳创佳环保科技工程有限公司 | Mofs material freeze dryer convenient for discharging |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085868U (en) * | 1990-11-28 | 1991-10-02 | 宋佑清 | Blow radiator for human surface |
| CN1197182A (en) * | 1997-04-14 | 1998-10-28 | 廖亚非 | Plane heat exchanger unit and refrigerating appts. with fun co-manufactured optimally (built-in wall) |
| CN1837622A (en) * | 2005-03-25 | 2006-09-27 | 刘步青 | Novel high-efficiency pipeline exhauster |
| CN201059272Y (en) * | 2007-06-07 | 2008-05-14 | 蒋友荣 | Portable vacuum pump having emergency power supply |
| CN203962435U (en) * | 2014-08-02 | 2014-11-26 | 杭州嘉裕电机有限公司 | Blower |
| CN104214118A (en) * | 2014-09-10 | 2014-12-17 | 江苏双菊风机有限公司 | Round pipeline fan |
| CN204344488U (en) * | 2014-11-24 | 2015-05-20 | 天津尼特风机有限公司 | A kind of novel fan |
| CN204400349U (en) * | 2014-12-30 | 2015-06-17 | 广州优塑塑料科技有限公司 | A kind of Novel combination disc |
| CN106907172A (en) * | 2017-05-10 | 2017-06-30 | 安徽捷运矿山机械有限公司 | A kind of mine ventilation device |
-
2017
- 2017-11-08 CN CN201711091131.5A patent/CN107939704A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085868U (en) * | 1990-11-28 | 1991-10-02 | 宋佑清 | Blow radiator for human surface |
| CN1197182A (en) * | 1997-04-14 | 1998-10-28 | 廖亚非 | Plane heat exchanger unit and refrigerating appts. with fun co-manufactured optimally (built-in wall) |
| CN1837622A (en) * | 2005-03-25 | 2006-09-27 | 刘步青 | Novel high-efficiency pipeline exhauster |
| CN201059272Y (en) * | 2007-06-07 | 2008-05-14 | 蒋友荣 | Portable vacuum pump having emergency power supply |
| CN203962435U (en) * | 2014-08-02 | 2014-11-26 | 杭州嘉裕电机有限公司 | Blower |
| CN104214118A (en) * | 2014-09-10 | 2014-12-17 | 江苏双菊风机有限公司 | Round pipeline fan |
| CN204344488U (en) * | 2014-11-24 | 2015-05-20 | 天津尼特风机有限公司 | A kind of novel fan |
| CN204400349U (en) * | 2014-12-30 | 2015-06-17 | 广州优塑塑料科技有限公司 | A kind of Novel combination disc |
| CN106907172A (en) * | 2017-05-10 | 2017-06-30 | 安徽捷运矿山机械有限公司 | A kind of mine ventilation device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062603A1 (en) * | 2020-09-25 | 2022-03-31 | 苏州纳创佳环保科技工程有限公司 | Mofs material freeze dryer convenient for discharging |
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Application publication date: 20180420 |