CN106986188A - A kind of buffer unit for sample pneumatic conveyer system - Google Patents
A kind of buffer unit for sample pneumatic conveyer system Download PDFInfo
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- CN106986188A CN106986188A CN201710292395.0A CN201710292395A CN106986188A CN 106986188 A CN106986188 A CN 106986188A CN 201710292395 A CN201710292395 A CN 201710292395A CN 106986188 A CN106986188 A CN 106986188A
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- sample
- pipeline
- main line
- power cabinet
- buffering
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- 239000000872 buffer Substances 0.000 title claims abstract description 31
- 230000003139 buffering effect Effects 0.000 claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000006173 Good's buffer Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 ore Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012773 Laboratory assay Methods 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/04—Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
- B65G51/18—Adaptations of pipes or tubes; Pipe or tube joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/04—Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
- B65G51/36—Other devices for indicating or controlling movements of carriers, e.g. for supervising individual tube sections, for counting carriers, for reporting jams or other operating difficulties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0235—Containers
- B65G2201/0244—Bottles
Abstract
The invention discloses a kind of buffer unit for sample pneumatic conveyer system, it is arranged between the main line of pneumatic conveyer system and power cabinet, including buffering pipeline and the bypass line being communicated in parallel way between main line and power cabinet power conduit, pipeline is buffered provided with forward check valve, bypass line is provided with reverse check valve；During power cabinet air-breathing, the negative-pressure gas of main line is only capable of being sucked into power cabinet through bypass line, forms buffering for making to enter in buffering pipeline from the sample bottle that main line suction comes；When power cabinet is blown, the barotropic gas of power cabinet blowout is only capable of buffered pipeline and is blown into main line, carries out pneumatic conveying for the sample bottle buffered in pipeline is synchronously blown into main line.The present invention has the advantages that design science is reasonable, construction cost is low, good buffer effect, safe.
Description
Technical field
Present invention relates generally to the gathering and processing apparatus field of material sample, and in particular to one kind is used for sample pneumatic conveying
The buffer unit of system.
Background technology
For material（Such as ore, coal）Sampling, sample preparation, the chemical examination work of sample, every country have pressure standard, must
The chemical industry of gathering and processing that sample must be carried out in accordance with standard is made.The sampling of sample, sample preparation, the criterion of the chemical examination course of work are not destroy sample
Under the premise of product are representational, the sample granularity collected is gradually reduced, quality is also gradually reduced, until meeting laboratory assay
To the granularity and quality of sample（Weight）Required precision, then carries out related assay to satisfactory sample.Such as with
The sample of coal, which is gathered and processed, turns to example, actually a kind of process of sampling analysis, the purpose of coal samling and sample preparation, is to obtain
The experiment coal sample for being sampled coal by the gross can be represented by obtaining its experimental result.Whether " sampling ", " sample preparation " or " chemical examination ",
There can not be the loss of sample during this, it is impossible to make sample occur some and physically or chemically change, otherwise will be to most
Whole result of the test is impacted.
In material（Such as ore, coal）In the sampling of sample, sample preparation, chemical examination work, it is necessary to by the sample gathered and processed from
The station of link（Laboratory）Transhipment is delivered to the station of next link（Laboratory）To carry out next stage work.In turning for sample
Transport is given during this, and the precision control of quality of sample, transhipment transporting velocity are particularly important.The transhipment conveying work of existing sample
In work, partly by the way of conduit pipe pneumatically conveying, sample（Sample bottle）Transported in high speed pneumatic in pneumatic transmission pipeline, and to
The frictional impact with pneumatic transfer tube wall is relied on to reach the purpose slowed down and stopped after up to target, this has following technical problem：
（1）In sample（Sample bottle）When carrying out high-speed motion, to make sample（Sample bottle）Friction and the impact force for stopping needs are very big,
Huge friction and impact force may damage pneumatic transmission pipeline and sample（Sample bottle）, cause pneumatic transmission pipeline and sample
（Sample bottle）Life-span greatly shorten.When pipeline breaking, the normal development of pneumatic transfer can be influenceed, even more so that whole when serious
Pneumatic conveyer system is paralysed.And work as sample（Sample bottle）During rupture, the physical characteristic and precision of sample can be largely effected on.
（2）Huge friction and impact force will also result in sample（Sample bottle）Interior sample isolation layering or sample water analysis
Go out or aoxidize, this may produce considerable influence for follow-up sample preparation, chemical examination, change physical characteristic and the change of sample
Test precision.
（3）From high-speed motion to the buffering pipe for stopping needing to grow very much, which increase construction cost, while to site requirements
It is higher.
（4）Sample（Sample bottle）Gas that can be in extrusion pipe when soon close to destination, in its impact process and formed compared with
Strong pressed gas, this can be injured to the blower fan formation of pipe end, damage blower fan.
The content of the invention
Technical problem solved by the invention is：The problem of existing for prior art is closed there is provided a kind of design science
Reason, low construction cost, good buffer effect, the safe buffer unit for sample pneumatic conveyer system.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of buffer unit for sample pneumatic conveyer system, is arranged at the main line and power cabinet of pneumatic conveyer system
Between, including buffering pipeline and the bypass line between main line and power cabinet power conduit be communicated in parallel way,
The buffering pipeline is provided with reverse check valve provided with forward check valve, the bypass line；During power cabinet air-breathing, main conveying
The negative-pressure gas of pipeline is only capable of being sucked into power cabinet through bypass line, for making to enter from the sample bottle that main line suction comes
Buffer and buffering is formed in pipeline；When power cabinet is blown, the barotropic gas of power cabinet blowout is only capable of buffered pipeline and is blown into main conveying
Pipeline, for synchronous be blown into main line of sample bottle buffered in pipeline is carried out into pneumatic conveying.
As a further improvement on the present invention, the buffering pipeline is one section of curved pipe.
As a further improvement on the present invention, the buffering pipeline and bypass line are in the tie point of main line side
Place passes through information provided with position detector, for detection sample bottle.
As a further improvement on the present invention, the forward check valve is arranged at buffering pipeline close to one end of power cabinet
On.
As a further improvement on the present invention, the other end of the main line and the commutator of pneumatic conveyer system connect
Lead to, for the sample bottle progress commutation transmission after buffering.
Compared with prior art, the advantage of the invention is that：
（1）The buffer unit for sample pneumatic conveyer system of the present invention, design science is simple in construction, by buffer pipeline,
The flexible cooperation of bypass line, forward check valve and reverse check valve, you can realize the buffered of excellent, buffers pipeline
Length requirement is short, and construction cost is low, and the requirement limitation to place is low so that present apparatus adaptability is extremely strong.
（2）The buffer unit for sample pneumatic conveyer system of the present invention, buffering effect is splendid, safe, can
Effectively reduction sample bottle effectively extends pneumatic transmission pipeline, sample bottle, the service life of blower fan, reduction to the demand of friction buffer
Pneumatic transmission pipeline, sample bottle, the risk of blower fan crack damage, reduce maintenance and repair cost；The steady buffering of sample bottle, will not shape
Into big vibration, the physical characteristic and precision of sample in sample bottle is effectively ensured, the just normally opened of pneumatic transfer has also been effectively ensured
Exhibition.
（3）The present invention the buffer unit for sample pneumatic conveyer system, by special design, can will buffering with
Drive and be combined together again, it is not only able to enter row buffering to the sample bottle quickly transmitted, additionally it is possible to which the sample bottle after buffering is entered again
Row fast driving, greatly improves the practicality and applicability of the present apparatus, has also effectively facilitated whole pneumatic conveyer system
Effec-tive Function.
（4）The buffer unit for sample pneumatic conveyer system of the present invention, buffering pipeline is one section of curved pipe.Curved pipe
Be designed to further to transmit come sample bottle formed quickly buffering, buffering effect is more preferably；Also it reduce further simultaneously
Length requirement to buffering pipeline, has saved occupation area of equipment, has saved cost.
Brief description of the drawings
Fig. 1 is the principle schematic diagram of the buffer unit for sample pneumatic conveyer system of the present invention.
Fig. 2 is the gas circuit principle schematic diagram one of the buffer unit for sample pneumatic conveyer system of the present invention.
Fig. 3 is the gas circuit principle schematic diagram two of the buffer unit for sample pneumatic conveyer system of the present invention.
Marginal data：
1st, main line；2nd, power cabinet；21st, power conduit；3rd, pipeline is buffered；31st, forward check valve；4th, bypass line；41、
Reverse check valve；5th, position detector；6th, commutator；7th, sample bottle.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiments and the drawings.
As shown in Figure 1 to Figure 3, the present invention provides a kind of buffer unit for sample pneumatic conveyer system, is arranged at gas
Between the main line 1 and power cabinet 2 of dynamic induction system, including main line 1 and power cabinet 2 be communicated in parallel way
Power conduit 21 between buffering pipeline 3 and bypass line 4.Buffering pipeline 3 is used to buffer sample bottle 7, and buffering pipeline 3 is provided with suitable
To check valve 31, the gas that power cabinet 2 is blown out can only be made unidirectionally to flow into buffering pipeline 3 by forward check valve 31；And bypass duct
Road 4 is only used for that sample bottle 7 will not be passed through in regulation, bypass line 4, and bypass line 4 is provided with reverse check valve 41, can only make main conveying
Gas unidirectional in pipeline 1 is inhaled into power cabinet 2 by reverse check valve 41, i.e., the ventilation of two check valves is in opposite direction
（As shown in two arrows of Fig. 1）.
When 2 air-breathing of power cabinet, the sample bottle 7 in main line 1, can be from main feedline by the aerodynamic effects of negative-pressure adsorption
Quickly transmitted in road 1.And due to being limited by the closing of forward check valve 31 so that the negative-pressure gas in main line 1
It is only capable of being sucked into power cabinet 2 through bypass line 4（Gas circuit is as indicated by the arrows of fig. 2）.When the next sample bottle 7 of absorption is by main feedline
After road 1 enters in buffering pipeline 3, due to losing the driving force of adsorbed gas so that unpowered sample bottle 7 can be slow
Influenceed in washing pipe road 3 by tube friction, it is quick to form effectively buffering, simultaneously because by the suitable of the buffering other end of pipeline 3
Limited to the closing of check valve 31 so that sample bottle 7 enters the air formation cushion effect in compression buffering pipeline 3 after buffering pipeline 3,
Further realize that fast cache slows down, and due to the limitation of forward check valve 31, the compressed gas can not reach power cabinet 2
Place, will not cause damage to the blower fan in power cabinet 2.When power cabinet 2 is blown, due to the closing limit by reverse check valve 41
System so that the barotropic gas that power cabinet 2 is blown out is only capable of buffered pipeline 3 and is blown into main line 1, now, in separator tube
Sample bottle 7 in road 3 just can be synchronously blown into main line 1 again carries out pneumatic conveying（Gas circuit such as Fig. 3 arrow institute
Show）.
The present invention buffer unit can be with pneumatic conveyer system multiple sub-device cooperations, for example as shown in figure 1, master it is defeated
The other end of pipeline 1 is sent to be connected with the commutator 6 of pneumatic conveyer system, for the progress commutation transmission of sample bottle 7 after buffering.
Such as when needing to transmit the commutation of sample bottle 7 in Pneumatic pipe B to Pneumatic pipe C：The first air-breathing of power cabinet 2 so that pneumatic
Sample bottle 7 can quickly be moved, and passed through main line 1 by the aerodynamic effects of negative-pressure adsorption towards the side of power cabinet 2 one in pipeline B
Formed and fast and effectively buffered after being input into buffering pipeline 3, to realize quick deceleration.Then, power cabinet 2 is blown again, due to
The barotropic gas that power cabinet 2 is blown out is only capable of buffered pipeline 3 and is blown into main line 1, now, in buffering pipeline 3
Sample bottle 7 again just can be synchronously blown into main line 1, and through completion commutation commutator 6 be transferred to it is pneumatic
In pipeline C.Complete the commutation transmission by Pneumatic pipe B to Pneumatic pipe C.
Special scientific design, has the following advantages that more than：
One is the buffer unit design science of the present invention, simple in construction, by buffering pipeline 3, forward bypass line 4, check valve
31 and the flexible cooperation of reverse check valve 41, you can realize the buffered of excellent, the buffering length requirement of pipeline 3 is short, builds
It is set as low, the requirement limitation to place is low so that present apparatus adaptability is extremely strong.
Two be that buffer unit buffering effect of the invention is splendid, safe, can effectively reduce sample 7 pairs of friction buffers of bottle
Demand, effectively extend pneumatic transmission pipeline, sample bottle 7, the service life of blower fan, reduce pneumatic transmission pipeline, sample bottle 7,
The risk of blower fan crack damage, reduces maintenance and repair cost.Sample bottle 7 is steadily buffered, and will not be formed big vibration, is effectively ensured
The physical characteristic and precision of sample, have also been effectively ensured the normal development of pneumatic transfer in sample bottle 7..
Three be the buffer unit of the present invention by special design, buffering and will can again drive and be combined together, it not only can
Enough sample bottles 7 to quickly transmitting enter row buffering, additionally it is possible to carry out fast driving again to the sample bottle 7 after buffering, greatly improve
The practicality and applicability of the present apparatus, have also effectively facilitated the Effec-tive Function of whole pneumatic conveyer system.
Further, in the preferred embodiment, buffering pipeline 3 is one section of curved pipe.Being designed to for curved pipe is further right
The next sample bottle 7 of transmission, which is formed, quickly, smoothly to be buffered, and more preferably, the physical characteristic of sample in sample bottle 7 has been effectively ensured in buffering effect
And precision；The length requirement to buffering pipeline 3 is also reduce further simultaneously, has been saved occupation area of equipment, has been saved cost.
Further, in the preferred embodiment, buffering pipeline 3 and bypass line 4 are at the tie point of the side of main line 1
Provided with position detector 5, for detection sample bottle 7 by information, for passing through information motivation of adjustment cabinet according to sample bottle 7 in time
2 pneumatic mode.
Further, in the preferred embodiment, forward check valve 31 is arranged at buffering pipeline 3 on one end of power cabinet 2,
So that the buffering one section of buffer distance of formation of pipeline 3, is also beneficial to sample bottle 7 and enters the sky buffered after pipeline 3 in compression buffering pipeline 3
Gas formation cushion effect, is further ensured that splendid buffering effect.
Further, in the preferred embodiment, the other end of main line 1 connected with the commutator 6 of pneumatic conveyer system,
For carrying out commutation transmission to the sample bottle 7 after buffering.With reference to the not only available buffer but also the particularity that can drive of the present apparatus, pole is realized
Good commutation operation, to promote the Effec-tive Function of whole pneumatic conveyer system.
It the above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Scope.
Claims (5)
1. a kind of buffer unit for sample pneumatic conveyer system, is arranged at the main line of pneumatic conveyer system（1）With
Power cabinet（2）Between, it is characterised in that including being communicated in main line with parallel way（1）With power cabinet（2）Power conduit
Between buffering pipeline（3）And bypass line（4）, the buffering pipeline（3）Provided with forward check valve（31）, the bypass duct
Road（4）It is provided with reverse check valve（41）；Power cabinet（2）During air-breathing, main line（1）Negative-pressure gas be only capable of through bypass duct
Road（4）It is sucked into power cabinet（2）It is interior, for making from main line（1）Inhale the sample bottle come and enter buffering pipeline（3）It is interior to be formed
Buffering；Power cabinet（2）During air blowing, power cabinet（2）The barotropic gas of blowout is only capable of buffered pipeline（3）It is blown into main line
（1）, for pipeline will be buffered（3）Interior sample bottle is synchronous to be blown into main line（1）Interior carry out pneumatic conveying.
2. the buffer unit according to claim 1 for sample pneumatic conveyer system, it is characterised in that the separator tube
Road（3）For one section of curved pipe.
3. the buffer unit according to claim 1 for sample pneumatic conveyer system, it is characterised in that the separator tube
Road（3）With bypass line（4）In main line（1）Position detector is provided with the tie point of side（5）, for detection sample
Bottle passes through information.
4. the buffer unit according to claim 3 for sample pneumatic conveyer system, it is characterised in that described forward single
To valve（31）It is arranged at buffering pipeline（3）Close to power cabinet（2）One end on.
5. the buffer unit as claimed in any of claims 1 to 4 for sample pneumatic conveyer system, its feature exists
In the main line（1）The other end and pneumatic conveyer system commutator（6）Connect, for the sample after buffering
Bottle carries out commutation transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710292395.0A CN106986188A (en) | 2017-04-28 | 2017-04-28 | A kind of buffer unit for sample pneumatic conveyer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710292395.0A CN106986188A (en) | 2017-04-28 | 2017-04-28 | A kind of buffer unit for sample pneumatic conveyer system |
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| Publication Number | Publication Date |
|---|---|
| CN106986188A true CN106986188A (en) | 2017-07-28 |
Family
ID=59418302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710292395.0A Pending CN106986188A (en) | 2017-04-28 | 2017-04-28 | A kind of buffer unit for sample pneumatic conveyer system |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539782A (en) * | 2017-09-08 | 2018-01-05 | 湖南三德科技股份有限公司 | Reception device for material pneumatic conveyer system |
| CN108584436A (en) * | 2018-05-18 | 2018-09-28 | 长沙开元仪器股份有限公司 | A kind of sample bottle gas-moving device |
| CN109650078A (en) * | 2019-01-09 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of the railway Cold Chain Logistics pipe-line system and method for lifting type commutation |
| CN112693898A (en) * | 2020-12-22 | 2021-04-23 | 上海琮祥机械设备有限公司 | Negative pressure conveying system for test tube |
| CN117619523A (en) * | 2023-11-16 | 2024-03-01 | 惠州市高斯强电子有限公司 | Processing technology and processing equipment for neodymium-iron-boron permanent magnet |
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| US4395164A (en) * | 1977-05-20 | 1983-07-26 | Krupp Polysius Ag | Pneumatic tube installation for posting samples of material |
| US4466761A (en) * | 1980-10-08 | 1984-08-21 | Krupp Polysius Ag | Pneumatic-tube conveying installation for samples of fine material |
| US20080298906A1 (en) * | 2007-05-29 | 2008-12-04 | Lowell Scott | Carrier transportation system with brake valve device proximate to a carrier receiver |
| CN204400174U (en) * | 2015-01-21 | 2015-06-17 | 秦皇岛赛尔机电设备有限公司 | One grows tobacco sampling box wind pipe feedway |
| CN105752688A (en) * | 2016-03-07 | 2016-07-13 | 陈显旺 | Energy-saving type medical pneumatic logistic conveying system |
| CN207107880U (en) * | 2017-04-28 | 2018-03-16 | 湖南三德科技股份有限公司 | A kind of buffer unit for sample pneumatic conveyer system |
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| US4395164A (en) * | 1977-05-20 | 1983-07-26 | Krupp Polysius Ag | Pneumatic tube installation for posting samples of material |
| US4466761A (en) * | 1980-10-08 | 1984-08-21 | Krupp Polysius Ag | Pneumatic-tube conveying installation for samples of fine material |
| US20080298906A1 (en) * | 2007-05-29 | 2008-12-04 | Lowell Scott | Carrier transportation system with brake valve device proximate to a carrier receiver |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539782A (en) * | 2017-09-08 | 2018-01-05 | 湖南三德科技股份有限公司 | Reception device for material pneumatic conveyer system |
| CN108584436A (en) * | 2018-05-18 | 2018-09-28 | 长沙开元仪器股份有限公司 | A kind of sample bottle gas-moving device |
| CN109650078A (en) * | 2019-01-09 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of the railway Cold Chain Logistics pipe-line system and method for lifting type commutation |
| CN112693898A (en) * | 2020-12-22 | 2021-04-23 | 上海琮祥机械设备有限公司 | Negative pressure conveying system for test tube |
| CN117619523A (en) * | 2023-11-16 | 2024-03-01 | 惠州市高斯强电子有限公司 | Processing technology and processing equipment for neodymium-iron-boron permanent magnet |
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Application publication date: 20170728 |