CN106743680A - Filler pneumatic conveys cover plate valve device for discharging - Google Patents
Filler pneumatic conveys cover plate valve device for discharging Download PDFInfo
- Publication number
- CN106743680A CN106743680A CN201611196277.1A CN201611196277A CN106743680A CN 106743680 A CN106743680 A CN 106743680A CN 201611196277 A CN201611196277 A CN 201611196277A CN 106743680 A CN106743680 A CN 106743680A
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- Prior art keywords
- plate
- connecting rod
- discharging
- support
- telescoping cylinder
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Classifications
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- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a kind of filler pneumatic conveying cover plate valve device for discharging, including mounting seat, the first pressing plate, baiting valve pipe, elastic plate, the second pressing plate, base plate, hinge, rocker bar bearing, support, installation board support, installing plate, telescoping cylinder, first connecting rod, second connecting rod, connector；Mounting seat is fixed on taper bottom of the barrel, and baiting valve pipe upper end is installed with cone tank；Elastic plate is fixed by the second pressing plate；Base plate is provided with hinge, chain connection rocker bar bearing；Rocker bar bearing is connected on a mounting board；Installing plate is connected with mounting seat, and the other end even installs board support；Board support is installed affixed with hopper inwall；Base plate is hinged with first connecting rod；First connecting rod is connected with second connecting rod, connector；Second connecting rod is hinged with hinged-support；Connector is connected with telescoping cylinder；Telescoping cylinder is connected with support；Support is affixed with hopper, and is connected with installing plate；, with baiting valve pipe without fretting wear, service life of equipment is long, good airproof performance, folding with convenience, compact conformation for cover plate of the invention.
Description
Technical field
The invention belongs to Geldart-D particle field, particularly a kind of filler pneumatic conveying cover plate valve device for discharging.
Background technology
Geldart-D particle has closed, safe and clean, efficient, small-sized, economy, pipeline flexible arrangement, easily realization automatic because of it
The advantages of changing continuous operation, has been widely used in industries such as chemical industry, cement, thermal power generation.Current Geldart-D particle is applicable mostly
In non-sticky, the conveying of particulate material, with industrial expansion and production the need for, it is desirable to air-transport system can convey cohesive powders
Material.Geldart-D particle discharge valve is the important component in air-transport system.To meet the delivery requirements of cohesive powders, to discharging
The design and performance of valve propose new requirement.The valve such as conventional guiding valve or gate valve is easily made because moving component is stained with powder
It is inapplicable in Geldart-D particle cohesive powders occasion into airtight failure or parts depreciation.Therefore calculated viscosity powder how is designed, it is close
Envelope is reliable, folding with convenience, compact conformation, powder discharge smoothly popularization and application of the discharge valve to Geldart-D particle have it is extremely important
Effect.
Current Pneumatic conveyer discharge valve mainly uses reciprocating blade type valve.Japan Patent JP2006170333 (A),
JP2006342859 (A), Chinese patent CN201320737703.3, CN201310282707.1 disclose a kind of using reciprocal
The discharge valve device of blade construction, their operation principle is all that the flowing of powder is controlled by reciprocating blade；Reciprocating blade
Type valve is characterized in have two housing parts, and this two parts forms the cavity for loading reciprocating blade, and blade is opened with one or more
Mouthful, opening is aligned with one or more openings in associated conduit, to control the flowing of the material that need to be transported；Blade is by such as
The Linear actuator positioning of electric cylinder or telescoping cylinder etc.Due to the permanent reciprocating motion of blade, necessarily make to be in contact with it is close
Closure material slowly weares and teares, so as to the air-tightness for causing valve is reduced；To the airtight of device in Geldart-D particle especially vacuum handling
Property requires high, and discharge valve is generally located in the baiting valve pipe of cyclone separator, if the air-tightness of valve is not high, also influences gas, powder
Separative efficiency.
A kind of rotary spool mechanism is disclosed in Chinese patent CN201520722922.3, CN201320125902.9,
Realize the folding of valve using the rotation of valve element, and utilize spring compression valve element, realize the sealed reliable of valve, solve valve element because
Prolonged exercise is worn and torn and the problem of air-tightness reduction, but its flow diameter is mainly limited by valve element volume, defeated in powder
In sending, if flow diameter is smaller, powder easily blocks runner, if flow diameter is larger, valve is bulky, involves great expense.
The content of the invention
Technical problem solved by the invention is to provide a kind of filler pneumatic conveying cover plate valve device for discharging, the discharge valve
Device has a folding with convenience, permanent sealed reliable, long service life, the characteristics of discharging is smooth during unlatching, and can easily with rotation
Wind separator is integrated, the characteristics of miniaturization with overall structure.
The technical solution for realizing the object of the invention is：
A kind of filler pneumatic conveys cover plate valve device for discharging, including blanking fixing device, valve plate device, connecting rod drive dress
Put；The blanking fixing device includes mounting seat, the first pressing plate, baiting valve pipe；The valve plate device includes elastic plate, the second pressure
Plate, base plate, hinge, rocker bar bearing；Driving rod drive includes linkage, support, installs board support, installing plate, telescoping cylinder；
The linkage includes first connecting rod, second connecting rod, connector；
The mounting seat is fixed in cyclone separator cone tank bottom cylindrical, and the baiting valve pipe upper end is divided with whirlwind
Cone tank from device is installed, and is fixed by the first pressing plate and mounting seat；The elastic plate is fixed by the second pressing plate
On base plate；The upper end of the base plate is provided with hinge, and the other end of hinge is connected with rocker bar bearing；The other end of rocker bar bearing
It is connected in the lower end of installing plate；Described installing plate one end is connected with mounting seat, and other end bottom is provided with installation board support；It is described
The other end for installing board support is affixed with hopper inwall；The base plate lower end is hinged with first connecting rod one end；The first connecting rod
The other end be connected with one end of second connecting rod, connector simultaneously；The second connecting rod is hinged with pedestal lower end hinged-support；It is described
The other end of connector is connected with the external part of telescoping cylinder；The telescoping cylinder other end is connected by bearing pin with pedestal upper end；Institute
State support affixed with hopper inwall, and be connected with installing plate upper surface.
The present invention compared with prior art, its remarkable advantage：
(1) be not in sealing without fretting wear between the cover plate and baiting valve pipe of cover plate valve device for discharging of the invention
Gap leakage after part abrasion, service life of equipment is long；(2) thrust is applied to cover plate by linkage, under compressing cover plate
Material valve pipe, the reserved path increment of piston rod can constantly compensate the slight plastic deformation of elastic plate appearance, with better seal；
(3) cover plate valve device for discharging folding with convenience of the invention, and powder is not easily blocked runner, discharging is smooth；(4) cover plate valve of the present invention
Device for discharging is integrated into hopper, compact conformation, saves the working space of device.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is that cover plate valve device for discharging of the present invention assembles general structure schematic diagram with hopper.
Fig. 2 is cover plate valve device for discharging valve closed mode structural representation of the present invention.
Fig. 3 is the present invention flexible jar support, connecting rod installation structure schematic diagram.
Fig. 4 is cover plate valve device for discharging dimensional structure diagram of the present invention.
Fig. 5 is cover plate valve device for discharging valve open mode structural representation of the present invention.
Fig. 6 is that cover plate valve device for discharging valve of the present invention closes connecting rod stress simplified schematic diagram.
Fig. 7 is that cover plate valve device for discharging valve of the present invention opens connecting rod stress simplified schematic diagram.
Fig. 8 is the vacuum pressure drop change schematic diagram of base plate device under different thrusts.
Specific embodiment
Illustrated with reference to Fig. 1-8 pairs of specific embodiment of the invention：
With reference to Fig. 2, filler pneumatic of the present invention conveys cover plate valve device for discharging, including blanking fixing device, valve plate device, company
Rod driving device；The blanking fixing device includes mounting seat 4, sealing ring 5, the first pressing plate 6, baiting valve pipe 7；The valve plate dress
Put including elastic plate 8, the second pressing plate 9, base plate 10, hinge 16, rocker bar bearing 17；Driving rod drive includes linkage, branch
Frame 12, installation board support 15, installing plate 18, telescoping cylinder 19；The linkage includes first connecting rod 11, second connecting rod 13, connects
Joint 14.
With reference to Fig. 3, Fig. 4, the mounting seat 4 is circular ring structure, for installing baiting valve pipe 7；The mounting seat 4 is fixed on
In the cone tank bottom cylindrical of cyclone separator 3, it is co-axially mounted with taper bottom of the barrel；The baiting valve pipe 7 is cylindrical
Structure, upper end is co-axially mounted with the cone tank of cyclone separator 3, and lower end is provided with inclined-plane discharging opening；Baiting valve pipe 7 passes through first
Pressing plate 6 is fixed with mounting seat 4；First pressing plate 6 is circular ring structure, by the connection of the first pressing plate 6 and mounting seat 4 with
Realize the sealing of baiting valve pipe 7；
As the further improvement to above-mentioned implementation method, sealing ring 5 is provided between the baiting valve pipe 7 and mounting seat 4；
The slab construction that the elastic plate 8 is made for elastomeric material；Elastic plate 8 is arranged on base plate 10, the base plate 10
It is slab construction；Elastic plate 8 is fixed on base plate 10 by the second pressing plate 9；Second pressing plate 9 is rectangular frame structure；Institute
The upper end for stating elastic plate 8 is slightly above the upper surface of the second pressing plate 9；The upper end of the base plate 10 is provided with hinge 16, hinge 16 it is another
One end is connected with rocker bar bearing 17；The rocker bar bearing 17 is L-type structure, and the other end of rocker bar bearing 17 is connected in installing plate 18
Lower end, the installing plate 18 is sector structure, and one end and mounting seat 4 are connected, other end bottom it is symmetrical installing plate is installed
Bearing 15；The installation board support 15 is L-type structure, and the other end for installing board support 15 is affixed with the inwall of hopper 22, installing plate
Bearing 15 plays a supportive role to installing plate 18 and telescoping cylinder 19；
In some embodiments, the elastic plate 8 is silica gel plate or foamed board；
With reference to Fig. 5, the lower end of the base plate 10 middle part is hinged with the one end of first connecting rod 11；The other end of the first connecting rod 11
By bearing pin while one end, connector 14 with second connecting rod 13 are connected；The second connecting rod 13 and the lower end hinged-support of support 12
It is hinged；The connector 14 is U-shape structure, and the other end of joint 14 is connected with the external part of telescoping cylinder 19；The telescoping cylinder 19
The other end is connected by bearing pin with the upper end of support 12；The support 12 is y-type structure, and upper end is provided with two of installation telescoping cylinder 19
Installing plate, telescoping cylinder 19 is located between two installing plates, and the lower end of support 12 is provided with the installation for installing the hinged-support of the second connecting rod 13
Plate；The support 12 is affixed with the inwall of hopper 22, support 12 be used for connecting two installing plate lower ends of telescoping cylinder 19 with installation
The upper surface of plate 18 connects；
In some embodiments, the telescoping cylinder 19 is cylinder, hydraulic cylinder or electric cylinder.
The path increment of the telescoping cylinder 19 is further improved more than the motion process of telescoping cylinder 19 as above-mentioned implementation method
Stroke, the reserved path increment of the piston rod of telescoping cylinder 19 can constantly compensate the slight plastic deformation of the appearance of elastic plate 8, with more preferable
Sealing.
Used as the further improvement to above-mentioned implementation method, the fixing end of the telescoping cylinder 19 is provided with 90 degree of elbows 21,90
The degree other end of elbow 21 is connected with hydraulic quick coupler 20, and hydraulic quick coupler 20 is produced with cone tank wall in preventing the action process of telescoping cylinder 19
Interference.
During work, the piston rod of telescoping cylinder 19 is stretched out, and second connecting rod 13 is rotated around the lower end hinged-support of support 12, second connecting rod 13
Angle increase between the inwall of hopper 22, promotes telescoping cylinder 19 to be swung around afterbody bearing pin, in the center line of telescoping cylinder 19 and hopper 22
Angle between wall also increases；In the presence of telescoping cylinder 19 and second connecting rod 13, first connecting rod 11 be connected with connector 14 one
End is moved downwards, promotes the other end of first connecting rod 11 to rotate, the angle increase between first connecting rod 11 and second connecting rod 13, bullet
Property plate 8 compress the lower end inclined-plane of baiting valve pipe 7, realize sealing；During sealing, vavuum pump is vacuumized from interface 1, and powder and gas are from connecing
Mouthfuls 2 enter into cyclone separator 3, in gathering baiting valve pipe 7 by cyclone separator 3；After assembling certain powder, stretch
The piston rod of contracting cylinder 19 is retracted, and second connecting rod 13 rotates backward around the lower end hinged-support of support 12, second connecting rod 13 and the inwall of hopper 22
Between angle reduce, angle of the telescoping cylinder 19 around between afterbody bearing pin backswing, the center line of telescoping cylinder 19 and the inwall of hopper 22
Reduce；One end that first connecting rod 11 is connected with connector 14 is moved upward, drives the other end of first connecting rod 11 to rotate backward,
Angle between first connecting rod 11 and second connecting rod 13 reduces, and valve is opened, and powder is discharged from feed opening；Simultaneously gas is passed through from interface 1
Body, can further secondary discharge.
Embodiment 1. calculates design of the telescoping cylinder 19 to the normal thrust and telescoping cylinder of base plate 10 with reference to Fig. 6, Fig. 7 and stretches respectively
Length, with reference to telescoping cylinder 19, linkage, the position relationship of base plate：
Wherein F is vertical compressive force of the telescoping cylinder 19 to base plate 10；α is the folder of the center line of telescoping cylinder 19 and the inwall of hopper 22
Angle；β is the angle of second connecting rod 13 and the inwall of hopper 22；δ is the angle of base plate 10 and baiting valve pipe 7；γ is first connecting rod 11
With the angle of second connecting rod 13；T is the thrust of telescoping cylinder 19；A is that the fixing end bearing pin center of telescoping cylinder 19 is hinged with support 12
The distance at bore center；Length when b is 19 working condition of telescoping cylinder；C is the length of second connecting rod 13；
In a particular embodiment, the bleed pressure of telescoping cylinder 19 is 0.3MPa, and the diameter of piston rod of telescoping cylinder 19 is
25mm, the fixing end bearing pin center of telescoping cylinder 19 with the lower hinge support hole center of support 12 apart from a=170mm, grow by second connecting rod 13
Degree c=50mm, the quality of valve plate is 0.4kg (including base plate 10, elastic plate 8, second pressing plate 9)
(1) when cover plate valve device for discharging valve is closed, and elastic plate 8 compresses baiting valve pipe 7, α is 21 °, and β is 49 °, and γ is
121 °, δ is 44 °, and according to formula (1), now vertical compressive force is 75.4N；
With reference to Fig. 8, when vertical compressive force is more than 60N, during the valve closed mode of cover plate valve device for discharging, whirlwind point is measured
Pressure drop is held essentially constant in device 3, now vertical compressive force F ＞ 60N, the good seal performance of device.
(2) when valve is opened completely, α is 10 °, and β is 15 °, and γ is 41 °, and δ is 12 °, according to formula (1) now vertical compressive force
It is 22.9N；
In a particular embodiment, the component perpendicular to base plate direction that valve plate gravity is produced is 0.815N, vertical pressure
Clamp force F is much larger than 0.815N, and valve still has enough vertical compressive forces can be by the smooth closing of valve in open mode.
(3) when valve is closed, telescoping cylinder stretches out, according to the length b of formula (2) telescoping cylinder0It is 147mm；When valve is opened, telescoping cylinder
Retract, according to the length b of formula (2) telescoping cylinder1It is 124mm, the stroke Δ b=b of the motion process of telescoping cylinder 19 can be obtained0-b1
=23mm, in the present embodiment, the stroke of cylinder is 25mm, stroke the stretching more than the motion process of telescoping cylinder 19 of telescoping cylinder 19
Contracting amount, has reserved certain path increment, after slight plastic deformation occurs in elastic plate 8, can compensate, and compresses elastic plate 8
Baiting valve pipe 7.
Claims (9)
1. a kind of filler pneumatic conveys cover plate valve device for discharging, it is characterised in that including blanking fixing device, valve plate device, company
Rod driving device；The blanking fixing device includes mounting seat (4), the first pressing plate (6), baiting valve pipe (7)；The valve plate device
Including elastic plate (8), the second pressing plate (9), base plate (10), hinge (16), rocker bar bearing (17)；Driving rod drive includes connecting rod
Mechanism, support (12), installation board support (15), installing plate (18), telescoping cylinder (19)；The linkage includes first connecting rod
(11), second connecting rod (13), connector (14)；
The mounting seat (4) is fixed in cyclone separator (3) cone tank bottom cylindrical, baiting valve pipe (7) upper end with
The cone tank of cyclone separator (3) is installed, and is fixed with mounting seat (4) by the first pressing plate (6)；The elastic plate
(8) it is fixed on base plate (10) by the second pressing plate (9)；The upper end of the base plate (10) is provided with hinge (16), hinge (16)
The other end be connected with rocker bar bearing (17)；The other end of rocker bar bearing (17) is connected in the lower end of installing plate (18)；The peace
Dress plate (18) one end is connected with mounting seat (4), and other end bottom is provided with installation board support (15)；Installation board support (15)
The other end it is affixed with hopper (22) inwall；Base plate (10) lower end is hinged with first connecting rod (11) one end；Described first connects
The other end of bar (11) is while one end, connector (14) with second connecting rod (13) are connected；The second connecting rod (13) and support
(12) lower end hinged-support is hinged；The other end of the connector (14) is connected with the external part of telescoping cylinder (19)；The telescoping cylinder
(19) other end is connected by bearing pin with support (12) upper end；The support (12) is affixed with hopper (22) inwall, and with installation
Plate (18) upper surface connects.
2. filler pneumatic according to claim 1 conveys cover plate valve device for discharging, it is characterised in that the blanking fixes dress
Putting also includes sealing ring (5), and the sealing ring (5) is between baiting valve pipe (7) and mounting seat (4).
3. filler pneumatic according to claim 1 conveys cover plate valve device for discharging, it is characterised in that the telescoping cylinder (19)
It is cylinder, hydraulic cylinder or electric cylinder.
4. filler pneumatic according to claim 1 conveying cover plate valve device for discharging, it is characterised in that the elastic plate (8) is
With the slab construction that elastomeric material is made.
5. filler pneumatic according to claim 4 conveying cover plate valve device for discharging, it is characterised in that the elastic plate (8) is
Silica gel plate or foamed board.
6. filler pneumatic according to claim 1 conveys cover plate valve device for discharging, it is characterised in that the telescoping cylinder (19)
Fixing end is provided with 90 degree of elbows (21), and 90 degree of elbow (21) other ends are connected with hydraulic quick coupler (20).
7. filler pneumatic according to claim 1 conveys cover plate valve device for discharging, it is characterised in that the telescoping cylinder (19)
Stroke of the path increment more than telescoping cylinder (19) motion process.
8. filler pneumatic according to claim 1 conveys cover plate valve device for discharging, it is characterised in that the baiting valve pipe (7)
It is cylindrical tubular structure, lower end is provided with inclined-plane discharging opening.
9. filler pneumatic according to claim 1 conveys cover plate valve device for discharging, it is characterised in that the elastic plate (8)
Upper end is higher than the second pressing plate (9) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196277.1A CN106743680B (en) | 2016-12-22 | 2016-12-22 | Filler pneumatic conveys cover plate valve device for discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196277.1A CN106743680B (en) | 2016-12-22 | 2016-12-22 | Filler pneumatic conveys cover plate valve device for discharging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106743680A true CN106743680A (en) | 2017-05-31 |
| CN106743680B CN106743680B (en) | 2019-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611196277.1A Active CN106743680B (en) | 2016-12-22 | 2016-12-22 | Filler pneumatic conveys cover plate valve device for discharging |
Country Status (1)
| Country | Link |
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| CN (1) | CN106743680B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060558A (en) * | 2021-03-30 | 2021-07-02 | 中国医学科学院阜外医院 | Glove powdering device |
| CN113928865A (en) * | 2021-10-25 | 2022-01-14 | 上海颜钛实业有限公司 | Pneumatic conveying system |
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| GB167366A (en) * | 1920-06-29 | 1921-08-11 | Simon Ltd Henry | Improvements in apparatus for the pneumatic transport of grain and other granular orlike materials |
| LU77475A1 (en) * | 1976-06-04 | 1977-09-19 | ||
| KR101171089B1 (en) * | 2012-03-28 | 2012-08-03 | (주)유로파 | Chute assembly for automatic waste collection system |
| CN202848048U (en) * | 2012-08-13 | 2013-04-03 | 安徽蓝基自动化设备科技有限公司 | Turning plate door device applied to powder packing scale |
| CN203512465U (en) * | 2013-09-30 | 2014-04-02 | 青岛益瑞科机械有限公司 | Pneumatic switching mechanism of bin door of traditional Chinese medicine decoction dreg storage bin |
| CN205136619U (en) * | 2015-10-19 | 2016-04-06 | 吴忠仪表有限责任公司 | Two board individual drives turn over board -like baiting valve |
| CN205771123U (en) * | 2016-05-19 | 2016-12-07 | 大自然生物集团有限公司 | A kind of pneumatic discharging device |
-
2016
- 2016-12-22 CN CN201611196277.1A patent/CN106743680B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB167366A (en) * | 1920-06-29 | 1921-08-11 | Simon Ltd Henry | Improvements in apparatus for the pneumatic transport of grain and other granular orlike materials |
| LU77475A1 (en) * | 1976-06-04 | 1977-09-19 | ||
| KR101171089B1 (en) * | 2012-03-28 | 2012-08-03 | (주)유로파 | Chute assembly for automatic waste collection system |
| CN202848048U (en) * | 2012-08-13 | 2013-04-03 | 安徽蓝基自动化设备科技有限公司 | Turning plate door device applied to powder packing scale |
| CN203512465U (en) * | 2013-09-30 | 2014-04-02 | 青岛益瑞科机械有限公司 | Pneumatic switching mechanism of bin door of traditional Chinese medicine decoction dreg storage bin |
| CN205136619U (en) * | 2015-10-19 | 2016-04-06 | 吴忠仪表有限责任公司 | Two board individual drives turn over board -like baiting valve |
| CN205771123U (en) * | 2016-05-19 | 2016-12-07 | 大自然生物集团有限公司 | A kind of pneumatic discharging device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060558A (en) * | 2021-03-30 | 2021-07-02 | 中国医学科学院阜外医院 | Glove powdering device |
| CN113060558B (en) * | 2021-03-30 | 2021-11-02 | 中国医学科学院阜外医院 | Glove powdering device |
| CN113928865A (en) * | 2021-10-25 | 2022-01-14 | 上海颜钛实业有限公司 | Pneumatic conveying system |
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| Publication number | Publication date |
|---|---|
| CN106743680B (en) | 2019-04-16 |
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Application publication date: 20170531 Assignee: JIANGSU JOYEA Corp. Assignor: NANJING University OF SCIENCE AND TECHNOLOGY Contract record no.: X2022980007223 Denomination of invention: Discharge device of cover valve for pneumatic conveying of powder Granted publication date: 20190416 License type: Common License Record date: 20220607 |