CN107252782A - A kind of machine-made sand wind power chalk dust removing equipment - Google Patents
A kind of machine-made sand wind power chalk dust removing equipment Download PDFInfo
- Publication number
- CN107252782A CN107252782A CN201710445369.7A CN201710445369A CN107252782A CN 107252782 A CN107252782 A CN 107252782A CN 201710445369 A CN201710445369 A CN 201710445369A CN 107252782 A CN107252782 A CN 107252782A
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- China
- Prior art keywords
- bellows
- machine
- made sand
- air
- wind power
- 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
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- 239000000428 dust Substances 0.000 title claims abstract description 56
- 239000004576 sand Substances 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 244000007853 Sarothamnus scoparius Species 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 11
- 210000003739 neck Anatomy 0.000 claims description 8
- 238000005406 washing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of machine-made sand wind power chalk dust removing equipment, including frame, frame, which includes being provided with chock dust remover, right support on left socle, right support and upper bracket, left socle, is provided with air-blast device, and hopper is provided with upper bracket；Chock dust remover includes cistern, upper roller, bottom roll and the conveyer belt being wrapped on upper and lower roller, and bottom roll is arranged on the top of cistern, and the water surface in cistern the conveyer belt part not being wrapped on bottom roll；Air-blast device includes bellows, and the right-hand member level of bellows, left end be inclined upwardly, and the right-hand member of bellows is that air inlet, left end are air outlet；Machine-made Sand falls from hopper, and the dust on Machine-made Sand is blown on conveyer belt in the presence of bellows wind-force.The present invention replaces traditional washing Machine-made Sand with wind-force, it is to avoid the pollution of dust, protects environment.
Description
Technical field
The invention belongs to Machine-made Sand sorting technology field, more particularly to a kind of machine-made sand wind power chalk dust removing equipment.
Background technology
In Process of Engineering Construction, sandstone is as the important component of concrete structure material, and its quality good or not is to whole
The quality and durability of individual engineering have very important influence., can from economy on the premise of satisfaction is with sand performance indications
Capable scheme, should meet construction quality requirement, again effective control production cost, the so ground in natural sand resource shortage
Area, Machine-made Sand undoubtedly turns into optimal selection.
Machine-made Sand refers to the sand processed by sand making machine and other auxiliary devices.Machine-made Sand has three in the application
Leading indicator receives much concern：Powder containing quantity, crush index and modulus of fineness.Machine-made Sand is in process of production, inevitably subsidiary
There is the stone flour that a small amount of particle diameter is less than 0.08mm.When content of stone powder is higher, the intensity for configuring concrete is adversely affected.
The method that traditional handicraft removes stone flour is washing or mechanical picker partition method, and two methods and with etc..WATER-WASHING METHOD
Need to consume substantial amounts of water resource, and subsequent wastewater treatment is more difficult, directly discharge can then cause water pollution.Mechanical grading
There is inefficiency from method, screening media is serious, energy consumption is higher and the problems such as separating unnet.Also there is work in both the above method
Bad environments, the problem of work under hard conditions (such as mud, airborne dust), it is unfavorable for the healthy of operating personnel.
As can be seen here, prior art awaits further improving.
The content of the invention
The present invention sets for the weak point for avoiding above-mentioned prior art from existing there is provided a kind of machine-made sand wind power chalk dust removing
Standby, the equipment replaces original WATER-WASHING METHOD and mechanical picker partition method with wind-force dedusting, while being avoided that the dust isolated is dirty again
Contaminate environment.
The technical solution adopted in the present invention is：
A kind of machine-made sand wind power chalk dust removing equipment, including frame, frame include left socle, right support and upper bracket, left branch
It is provided with frame on chock dust remover, right support and is provided with air-blast device, hopper is provided with upper bracket；Chock dust remover bag
Cistern, upper roller, bottom roll and the conveyer belt being wrapped on upper and lower roller are included, bottom roll is arranged on the top of cistern, and
The water surface in cistern the conveyer belt part not being wrapped on bottom roll；Air-blast device includes bellows, the right-hand member of bellows
Level, left end are inclined upwardly, and the right-hand member of bellows is that air inlet, left end are air outlet；Machine-made Sand falls from hopper, machine
Dust on sand processed is blown on conveyer belt in the presence of bellows wind-force.
Dust-collecting mechanism is additionally provided with the left socle, dust-collecting mechanism includes two pieces of air gathering plates, and each air gathering plate is arranged on a left side
The right side of support and vertically arranged along left socle, one end of each air gathering plate is connected with left socle, the other end is expanded with both sides forwards, backwards
The mode of exhibition is expanded, and two pieces of air gathering plates cooperatively form a dust collecting opening.
The dust arrester also includes rotary broom, and rotary broom is arranged on the lower section of bottom roll, and rotary broom is with being wrapped in down
Conveyer belt part on roller is in contact, and the rotation direction of rotary broom is opposite with the rotation direction of bottom roll.
The peripheral border of the rotary broom is evenly equipped with bristle.
The machine-made sand wind power chalk dust removing equipment also includes motor and decelerator, and the output shaft of the motor is by subtracting
Fast device is connected with the drum shaft of bottom roll.
The bellows has multiple, and multiple bellows are set gradually from top to bottom.
The air outlet governor motion for adjusting air-out direction and wind-force, air-out are provided with the air outlet of the bellows
Mouthful governor motion includes upper connecting rod, lower link and air regulating board, and one end of air regulating board is connected with upper connecting rod, the other end and lower link phase
Even, the setting angle of the air regulating board is adjustable.
It is separately provided for the chute of lower link being installed and for installing upper connecting rod on the bellows left end two side
Positioning regulating tank, positioning regulating tank include multiple interconnected necks, each neck opening up on bellows left end side wall
Height is different.
It is provided with the right support on the bearing for installing bellows, the top end face of bellows right-hand member and limited location is set
Blend stop, bellows loads after bearing, and the top end face of spacing blend stop is higher than the top end face of bearing, and spacing blend stop limits bellows peace
It is attached to the movement of the left-hand behind position.
The machine-made sand wind power chalk dust removing equipment also includes upper link, and upper link is used to connect left socle and upper branch
Frame, the adjustable length of upper link.
By adopting the above-described technical solution, having the beneficial effect that acquired by the present invention：
1st, the method for traditional washing Machine-made Sand can be replaced using the present invention, by bellows by the dust in Machine-made Sand
It is blown on dust arrester, dust arrester removes the dust that bellows is isolated, and the conveyer belt of dust arrester is in transmit process
When moving at bottom roll, the dust on conveyer belt is brought into cistern, and dust is filtered and precipitated in cistern, it is to avoid
Serious environmental pollution, while saving substantial amounts of water resource again.
2nd, compact conformation of the present invention, simple to operate, easy to use, and function is integrated, it is adaptable to different types of sand and other
Aggregate with dust.
Brief description of the drawings
Fig. 1 is the schematic diagram of present invention when being looked over from side.
The schematic diagram of present invention when Fig. 2 is looks over from opposite side.
Fig. 3 is the axonometric drawing of bellows in the present invention.
Fig. 4 removes the schematic diagram after cistern for dust arrester in the present invention.
Wherein,
1st, cistern 2, bottom roll 3, conveyer belt 4, left socle 5, upper roller 6, upper link 7, right support 8, rolling
Cylinder brush 8.1, bristle 9, air gathering plate 10, hopper 11, upper bracket 12, skewed horizontal load bar 13, bellows 13.1, chute
13.2nd, lower link 13.3, air regulating board 13.4, upper connecting rod 13.5, positioning regulating tank 13.6, spacing blend stop 14, bearing
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but the present invention is not limited to
These embodiments.
As shown in Figures 1 to 4, a kind of machine-made sand wind power chalk dust removing equipment, including frame, frame includes left socle 4, right branch
Frame 7 and upper bracket 11.The machine-made sand wind power chalk dust removing equipment also includes upper link 6, and upper link 6 is used to connect left socle
4 and upper bracket 11, the adjustable length of upper link 6.It is detachable company between upper link 6 and left socle 4, upper bracket 11
Connect.The setting of upper link 6 adds the bulk strength and rigidity of equipment.
It is connected between the upper bracket 11 and the top of right support 7 by skewed horizontal load bar 12.Set on the right support 7
There is air-blast device, air-blast device includes bellows 13, and the right-hand member level of bellows 13, left end are inclined upwardly, and bellows 13
Right-hand member is that air inlet, left end are air outlet.The bellows 13 has two, and two bellows 13 are set one on the other.The right side
Two bearings 14 for being respectively used to install bellows 13 are provided with support 7.The similar box body structure of the bearing 14, bearing 14 by
Square tubes soldering is formed.Spacing blend stop 13.6 is provided with the top end face of the right-hand member of bellows 13, bellows 13 loads after bearing 14, limit
The top end face of position blend stop 13.6 is higher than the top end face of bearing 14, and spacing blend stop 13.6 limits the left side after bellows 13 is installed in place
To movement.
The air outlet governor motion for adjusting air-out direction and wind-force is provided with the air outlet of the bellows 13, is gone out
Air port governor motion includes upper connecting rod 13.4, lower link 13.2 and air regulating board 13.3, one end of air regulating board 13.3 and upper connecting rod
13.4 are connected, the other end is connected with lower link 13.2, and the setting angle of the air regulating board 13.3 is adjustable.Specifically, the drum
It is separately provided for the chute 13.1 of lower link 13.2 being installed and for installing upper connecting rod 13.4 on the left end two side of bellows 13
Positioning regulating tank 13.5, positioning regulating tank 13.5 includes three interconnected necks, three necks and for connecting three
The connectivity slot of neck coordinates one " mountain " font structure of composition jointly, and each neck opens up height on the left end side wall of bellows 13
It is different.
The hopper 10 for conveying undressed Machine-made Sand is provided with the upper bracket 11.Hopper 10 is in handstand
Truncated rectangular pyramids structure.Machine-made Sand falls from hopper 10, and the dust on Machine-made Sand is blown in the presence of the wind-force of bellows 13
To the conveyer belt 3 of following bugduster apparatus.
Be provided with chock dust remover on the left socle 4, chock dust remover include cistern 1, upper roller 5, bottom roll 2 and
It is wrapped in the conveyer belt 3 on upper and lower roller.The machine-made sand wind power chalk dust removing equipment also includes motor and decelerator, described
The output shaft of motor is connected by decelerator with the drum shaft of bottom roll 2.
The water surface that the bottom roll 2 is arranged in the top of cistern 1, and cistern 1, which, not to be wrapped on bottom roll 2
Conveyer belt part.The dust arrester also includes rotary broom 8, and rotary broom 8 is arranged on the lower section of bottom roll 2, and rotary broom 8 is with twining
The conveyer belt part being wound on bottom roll 2 is in contact, and the rotation direction of rotary broom 8 is opposite with the rotation direction of bottom roll 2.It is described
The peripheral border of rotary broom 8 is evenly equipped with the bristle 8.1 of hard.Cistern 1 into is brought the dust on conveyer belt 3 by rotary broom 8
In, dust is filtered and settled in cistern 1.
Dust-collecting mechanism is additionally provided with the left socle 4, dust-collecting mechanism includes two pieces of air gathering plates 9, and each air gathering plate 9 is arranged on
The right side of left socle 4 and vertically arranged along left socle 4, one end of each air gathering plate 9 is connected with left socle 4, the other end is with forwards, backwards
The mode of both sides extension is expanded, and two pieces of air gathering plates 9 cooperatively form a dust collecting opening, so as to easily facilitate dust in bellows 13
It is blown under wind-force effect by concentration on conveyer belt 3.
The part do not addressed in the present invention uses or used for reference prior art and can be achieved.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are based on orientation shown in the drawings or position
Relation, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have
There is specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Specific embodiment described herein is only the spiritual example explanation to the present invention.Belonging to of the invention
Those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode is substituted, but without departing from the spiritual of the present invention or surmounts scope defined in appended claims.
Claims (10)
1. a kind of machine-made sand wind power chalk dust removing equipment, it is characterised in that including frame, frame include left socle, right support and on
It is provided with support, left socle on chock dust remover, right support and is provided with air-blast device, hopper is provided with upper bracket；Remove
Dust device includes cistern, upper roller, bottom roll and the conveyer belt being wrapped on upper and lower roller, and bottom roll is arranged on retaining
The top in pond, and the water surface in cistern the conveyer belt part not being wrapped on bottom roll；Air-blast device includes bellows, drum
The right-hand member level of bellows, left end are inclined upwardly, and the right-hand member of bellows is that air inlet, left end are air outlet；Machine-made Sand is from blanking
Fall at bucket, the dust on Machine-made Sand is blown on conveyer belt in the presence of bellows wind-force.
2. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that also set on the left socle
Dust-collecting mechanism is equipped with, dust-collecting mechanism includes two pieces of air gathering plates, and each air gathering plate is arranged on the right side of left socle and vertical along left socle
Set, one end of each air gathering plate is connected with left socle, the other end is expanded in the way of the extension of both sides forwards, backwards, and two pieces of air gathering plates are matched somebody with somebody
Close and form a dust collecting opening.
3. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that the dust arrester is also wrapped
Rotary broom is included, rotary broom is arranged on the lower section of bottom roll, and rotary broom is in contact with the conveyer belt part being wrapped on bottom roll,
The rotation direction of rotary broom is opposite with the rotation direction of bottom roll.
4. a kind of machine-made sand wind power chalk dust removing equipment according to claim 3, it is characterised in that the periphery of the rotary broom
Border is evenly equipped with bristle.
5. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that the machine-made sand wind power is removed
Dust device also includes motor and decelerator, the drum shaft phase that the output shaft of the motor passes through decelerator and bottom roll
Even.
6. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that the bellows has many
Individual, multiple bellows are set gradually from top to bottom.
7. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that the air-out of the bellows
Be provided with air outlet governor motion for adjusting air-out direction and wind-force at mouthful, air outlet governor motion include upper connecting rod, under
Connecting rod and air regulating board, one end of air regulating board is connected with upper connecting rod, the other end is connected with lower link, the setting angle of the air regulating board
It is adjustable.
8. a kind of machine-made sand wind power chalk dust removing equipment according to claim 7, it is characterised in that the bellows left end two
It is separately provided for that the chute of lower link and the positioning regulating tank for installing upper connecting rod are installed on the wall of side, positions regulating tank bag
Multiple interconnected necks are included, each neck opens up height difference on bellows left end side wall.
9. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that set on the right support
Have and spacing blend stop is provided with the bearing for installing bellows, the top end face of bellows right-hand member, bellows loads after bearing, limit
The top end face of position blend stop is higher than the top end face of bearing, and spacing blend stop limits the movement of the left-hand after bellows is installed in place.
10. a kind of machine-made sand wind power chalk dust removing equipment according to claim 1, it is characterised in that the machine-made sand wind power
Chalk dust removing equipment also includes upper link, and upper link is used to connect left socle and upper bracket, the adjustable length of upper link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710445369.7A CN107252782A (en) | 2017-06-14 | 2017-06-14 | A kind of machine-made sand wind power chalk dust removing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710445369.7A CN107252782A (en) | 2017-06-14 | 2017-06-14 | A kind of machine-made sand wind power chalk dust removing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107252782A true CN107252782A (en) | 2017-10-17 |
Family
ID=60023204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710445369.7A Pending CN107252782A (en) | 2017-06-14 | 2017-06-14 | A kind of machine-made sand wind power chalk dust removing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107252782A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157834Y (en) * | 1993-06-16 | 1994-03-02 | 刘克俊 | Separator for chaff and rice |
| CN2437407Y (en) * | 2000-05-14 | 2001-07-04 | 张延民 | Air equalizing device of electrostatic dust collector |
| CN2610632Y (en) * | 2003-03-07 | 2004-04-14 | 韩秀艳 | Multifunctional full automatic thresher |
| CN2823880Y (en) * | 2005-09-16 | 2006-10-04 | 河北理工大学 | Negative pressure adjustable exhausting device |
| CN202105795U (en) * | 2011-05-31 | 2012-01-11 | 中铁一局集团有限公司 | Air-separation and dust-removal device for machine-made sand |
| CN102343332A (en) * | 2010-08-02 | 2012-02-08 | 湖南省农友机械集团有限公司 | Circulating air flow grain fanning-sorting machine |
| CN102350167A (en) * | 2011-09-14 | 2012-02-15 | 赵建勋 | Dust filter |
| CN102514463A (en) * | 2011-12-23 | 2012-06-27 | 芜湖博耐尔汽车电气***有限公司 | Back row air blowing mechanism for vehicle air conditioner |
| CN204170951U (en) * | 2014-09-12 | 2015-02-25 | 任军峰 | A kind of grain selection by winnowing separation equipment |
| CN105371465A (en) * | 2015-12-11 | 2016-03-02 | 长沙广义变流技术有限公司 | Air guiding system |
| CN207126814U (en) * | 2017-06-14 | 2018-03-23 | 山东省路桥集团有限公司 | A kind of machine-made sand wind power chalk dust removing equipment |
-
2017
- 2017-06-14 CN CN201710445369.7A patent/CN107252782A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157834Y (en) * | 1993-06-16 | 1994-03-02 | 刘克俊 | Separator for chaff and rice |
| CN2437407Y (en) * | 2000-05-14 | 2001-07-04 | 张延民 | Air equalizing device of electrostatic dust collector |
| CN2610632Y (en) * | 2003-03-07 | 2004-04-14 | 韩秀艳 | Multifunctional full automatic thresher |
| CN2823880Y (en) * | 2005-09-16 | 2006-10-04 | 河北理工大学 | Negative pressure adjustable exhausting device |
| CN102343332A (en) * | 2010-08-02 | 2012-02-08 | 湖南省农友机械集团有限公司 | Circulating air flow grain fanning-sorting machine |
| CN202105795U (en) * | 2011-05-31 | 2012-01-11 | 中铁一局集团有限公司 | Air-separation and dust-removal device for machine-made sand |
| CN102350167A (en) * | 2011-09-14 | 2012-02-15 | 赵建勋 | Dust filter |
| CN102514463A (en) * | 2011-12-23 | 2012-06-27 | 芜湖博耐尔汽车电气***有限公司 | Back row air blowing mechanism for vehicle air conditioner |
| CN204170951U (en) * | 2014-09-12 | 2015-02-25 | 任军峰 | A kind of grain selection by winnowing separation equipment |
| CN105371465A (en) * | 2015-12-11 | 2016-03-02 | 长沙广义变流技术有限公司 | Air guiding system |
| CN207126814U (en) * | 2017-06-14 | 2018-03-23 | 山东省路桥集团有限公司 | A kind of machine-made sand wind power chalk dust removing equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171017 |
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| RJ01 | Rejection of invention patent application after publication |