CN101406883A - Device for separating powder on particle surface of plastic - Google Patents
Device for separating powder on particle surface of plastic Download PDFInfo
- Publication number
- CN101406883A CN101406883A CNA2007100468187A CN200710046818A CN101406883A CN 101406883 A CN101406883 A CN 101406883A CN A2007100468187 A CNA2007100468187 A CN A2007100468187A CN 200710046818 A CN200710046818 A CN 200710046818A CN 101406883 A CN101406883 A CN 101406883A
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- vibratory sieve
- particle surface
- powder according
- dust
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Combined Means For Separation Of Solids (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a device capable of removing dust adhered to the surfaces of plastic particles. A device capable of removing the dust on the surfaces of plastic particles comprises a system of which a fan is taken as a power source, and an inlet and an outlet of the fan are connected through an air duct pipeline. The device is characterized in that a vibration separation component and a separation dust collecting unit are consecutively connected with the air outlet of the fan. A vibrating screen is arranged horizontally in the middle of a closed type vibrating bin body; an air outlet of an upper bin cover of the vibrating screen and an air inlet of a lower chamber of the vibrating screen are both connected with the air duct pipeline of the fan through flexible connecting pipes; a blocking screen is arranged on the air outlet of the upper bin cover; a feeding port and a discharging port are arranged above the vibrating screen of the bin body respectively; the mesh sizes of the vibrating screen and the blocking screen are both smaller than the grain size of the plastic particles; and the vibrating screen is driven by a vibrating mechanism. The device has the advantage that the device has a simple structure, easy setup and configuration, and convenient operation and use, is capable of separating the adhered dust from the plastic particles sufficiently, thoroughly and neatly, and is also capable of collecting the dust.
Description
Technical field
The present invention is a kind of device that the plastic pellet surface of macromolecular material is handled, and particularly relates to a kind of device that the powder of plastic pellet surface adhesion is separated removal.
Background technology
Known, powder appears in the plastic pellet of macromolecular material easily in granulation process at present.Because the static that can't eliminate in the production process makes powder adherence on the plastic pellet surface, therefore, the powder that produces in these granulation process can't be separated with plastic pellet.These macromolecular material plastic pellets that have a powder in use, the powder of macromolecular material plastic pellet surface adhesion is trapped in the equipment surface of high temperature and can produces the charing phenomenon, causes the product surface flaw of stain and so on to occur during production easily.The powder that separates macromolecular material plastic pellet surface is a difficult problem in the present modified plastics industry.
By retrieval, China Patent No.: 89211344.8, patent name " plastic pellet dryer " and the patent No.: 97230732.X, patent name " energy-saving type plastic particle drying machine ", all be to solve plastic pellet drying plant power consumption height in the process of oven dry plastic pellet in the present plastic industry, yield poorly the problem of weak point such as labour intensity is big, helpless solution powder adherence problem.
The flat 8-155340 of Japan Patent: Te Xu Gong Open " プ ラ ス チ Star Network mixture installs お ょ び method (separator of plastic pellet mixture and method) respectively " the flat 6-63441 of Ji Te Xu Gong Open " プ ラ ス チ Star Network particle difference method (method for separating of plastic pellet) ", and the public table of Te Xu 2003-513791 " プ ラ ス チ Star Network を Fen From The Ru method お ょ び device (method of separating plastic particle and device) ", the separation method and the device that all provide some to mix the plastic pellet of different cultivars and sneaked into metallic in plastic pellet are to be applied to the powder that the separating plastic particle surface adheres to.
Summary of the invention
The objective of the invention is, intend providing a kind of plastic pellet that can separate macromolecular material in process, to produce, and stick to the device of the powder of particle surface.
The objective of the invention is to be achieved through the following technical solutions:
Comprise that one is power source by blower fan, in the import and export of the blower fan system continuous, it is characterized in that, insert vibration sorting assembly and separation dust collector device in succession from fan outlet by the air channel pipeline,
Described vibration sorting assembly is, in the centre of closed vibration casing, is and is horizontally disposed with vibratory sieve, and the air inlet of the air outlet of top vibration case lid and bottom vibration chamber takes over by flexible air-out and flexible blast pipe is connected with the air channel pipeline of blower fan;
On the air outlet of vibration case lid, be provided with and stop screen cloth;
Above the vibratory sieve of casing, offer the charging aperture that opening makes progress, offer the discharging opening that Open Side Down at the extended end of vibratory sieve;
Described vibratory sieve and stop that the aperture of screen cloth is all less than the plastic pellet particle diameter;
Described vibratory sieve is driven by vibration source.
Adopt the technical program, the macromolecular material plastic pellet enters the middle vibratory sieve top of vibration casing from charging aperture, and vibration source drives shaker vibration, and blower fan is opened, and produces the lasting swiftly flowing pressure air of circulation in the pipeline of air channel.The powder of macromolecular material plastic pellet surface adhesion is separated by vibration on vibratory sieve in the vibrating bin of sealing, the pressure air of being sent into by the air inlet of bottom upwards blows afloat dust, carry toward air outlet, the plastic pellet of wherein having removed dust is stopped on the case lid air outlet that the screen cloth of sieve stops, powder enters the separation dust collector device by pipeline, and after separating, dust is concentrated in the control of dust casket, pure air is returned in the air inlet of blower fan by the air channel pipeline again, recycles.Removed the upper surface of plastic pellet clean behind the separated dust, opened the discharging opening valve, handled the clean plastic pellet of finishing and be discharged from, finished whole dust collecting process flow process at vibratory sieve.
Further, the described vibration source of the technical program is the double vibrations motor.Directly adopt the double vibrations motor, simple in structure, easy to use.
Further, the described vibration source of the technical program is a common electric rotating machine interlock crank-swinging mechanism.By crank-swinging mechanism, can obtain more freely amplitude and frequency, obtain better vibration separating effect.
Further, described charging aperture of the technical program and discharging opening are opened in the two ends of the correspondence of vibratory sieve respectively.Offer charging aperture and discharging opening at the two ends of vibratory sieve correspondence, the distance between two mouthfuls is bigger, can make the plastic pellet of coming in from charging aperture, vibrates by long distance and separates the back and discharge from discharging opening, and separating effect, efficient are better.
Further, the described vibratory sieve of the technical program is horizontally placed to and slightly is inclination, and the angle of level is between the 0-15 degree.When vibratory sieve shows slightly heeling condition, can separate with rhythm more steady, unimpeded, certain flow rate, can control separating rate and separating effect.
Further, described flexible air-out adapter of the technical program and flexible blast pipe are the plastic ripple flexible pipe.The plastic ripple flexible pipe is a kind of common used material and part, can tolerate long-term, frequent vibration, bending, and price is low, the life-span is long.
Further, described flexible air-out adapter of the technical program and flexible blast pipe are rubber hose.Also be a kind of good endurance, common used material that counter-bending ability is strong, play flexibly connecting effect preferably.
Further, the described separation dust collector device of the technical program is the whirlwind centrifugal separator, comprises air inlet, rotation disengagement chamber, control of dust casket and gas outlet.It is effective that the whirlwind centrifugal separator separates dust, and the dust of collection is concentrated, and it is convenient to extract isolated dust.
Further, the described separation dust collector of the technical program unit is the intercept type filtering separation device, comprises filter chamber and filter bag.Filter the pocket type Chalk-dust filtering, simple in structure, Costco Wholesale is low.
Further, all dispose sealed valve on described charging aperture of the technical program and the discharging opening.Separate smoothly reliably in order to ensure vibration, when the vibration ventilating, must guarantee the sealing of feed inlet and outlet valve closing.
The beneficial effect and the advantage of the technical program are:
The technical program is simple in structure, configuration is set easily, easy for operation, the dust process of plastic pellet surface adhesion is vibrated, screen cloth stops and three links of separation dust collector, can isolate the dust of adhesion fully, thoroughly, neatly from plastic pellet, and dust is concentrated, reached the purpose of this utility model.
Description of drawings
Fig. 1 is the device general construction allocation plan of a kind of separating plastic particle surface of the present invention powder.
Among the figure, 1 flexible discharge pipe, 2 stop screen cloth, 3 vibration case lids, 4 charging apertures, 5 vibratory sieves, 6 vibration sources, 7 frames, 8 flexible blast pipes, 9 vibration chambers, 10 discharging openings, 11 blower fans, 12 separation dust collector devices, 13 control of dust caskets.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention are elaborated.
As shown in Figure 1, blower fan 11 is a power source, in the import and export of blower fan 11 system continuous by the air channel pipeline, inserts vibration sorting assembly and separation dust collector device in succession from blower fan 11 air outlets.
Vibration sorting assembly is the centre at closed vibration casing, with the angle of level be that 5 degree are provided with vibratory sieve 5, the air inlet of the air outlet of top vibration case lid 3 and bottom vibration chamber 9 by rubber hose be the flexible air-out of material take over 1 and flexible blast pipe 8 be connected with the air channel pipeline of blower fan 11; On the air outlet of vibration case lid 3, be provided with and stop screen cloth 2; Above the vibratory sieve 5 of casing, offer charging aperture 4 and discharging opening 10 respectively, and all disposed sealed valve, vibratory sieve 5 and stop that the aperture of screen cloth 2 is all less than the plastic pellet particle diameter; Vibratory sieve 5 is vibrated on frame 7 by the double vibrations motor-driven as vibration source 6.Charging aperture 4 and discharging opening 10 are opened in the two ends of the correspondence of vibratory sieve 5 respectively.Separation dust collector device 12 is the whirlwind centrifugal separator, comprises air inlet, rotation disengagement chamber, control of dust casket and gas outlet.
The air-flow that carries powder enters separation dust collector device 12, and the air-flow that powder is rotated at a high speed gets rid of the wall portion at the cyclonic separation cavity, concentrates in the control of dust casket 13 of bottom again, opens valve and takes out powder.
The aperture that stops screen cloth 2 is littler than the plastic pellet particle diameter that needs dedusting, avoids the stressed excessive plastic pellet of part to enter into the wind circulating line, causes the loss of high molecule plastic particle in going the powder process.The sieve aperture of vibratory sieve 5 is littler than the particle diameter of the plastic pellet that needs dedusting, avoids in dust removal process macromolecular material plastic pellet to fall in the intake stack under vibrating screen mesh, and sieve aperture will ventilate and guarantee recycling of air-flow simultaneously.
The macromolecular material plastic pellet enters middle vibratory sieve 5 tops of vibration casing from charging aperture 4, and vibration source 6 drives vibratory sieves 5 vibrations, and blower fan 11 is opened, and produces the swiftly flowing pressure air that circulates and continue in the pipeline of air channel.The powder of macromolecular material plastic pellet surface adhesion is separated by vibration on vibratory sieve 5 in the vibrating bin of sealing, the pressure air of being sent into by the air inlet of bottom upwards blows afloat dust, carry toward air outlet, the plastic pellet of wherein having removed dust is vibrated stops on case lid 3 air outlets that screen cloth 2 stops, powder enters separation dust collector device 12 by pipeline, after separating, dust is concentrated in the control of dust casket 13, pure air is returned in the air inlet of blower fan 11 by the air channel pipeline again, recycles.Removed the upper surface of plastic pellet clean behind the separated dust, opened discharging opening 10 valves, handled the clean plastic pellet of finishing and be discharged from, finished whole dust collecting process flow process at vibratory sieve 5.
The technical program is simple in structure, configuration is set easily, easy for operation, the dust process of plastic pellet surface adhesion is vibrated, screen cloth stops and three links of separation dust collector, can isolate the dust of adhesion fully, thoroughly, neatly from plastic pellet, and dust is concentrated.
Claims (10)
1. the device of a separating plastic particle surface powder comprises that one is power source by blower fan, in the system that the import and export of blower fan is linked to each other by the air channel pipeline, it is characterized in that, inserts vibration sorting assembly and separation dust collector unit in succession at fan outlet,
Described vibration sorting assembly is, in the centre of closed vibration casing, is and is horizontally disposed with vibratory sieve, and the air outlet of the top case lid of vibratory sieve and the air inlet of bottom chamber are connected with the air channel pipeline of blower fan by flexible connecting pipe;
On the air outlet of top case lid, be provided with and stop sieve;
Above the vibratory sieve of casing, offer the charging aperture that opening makes progress, offer the discharging opening that Open Side Down at the extended end of vibratory sieve;
The aperture of the screen cloth of described vibratory sieve and the screen cloth that stops sieve is all less than the plastic pellet particle diameter;
Described vibratory sieve is driven by vibrating mechanism.
2. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that described vibrating mechanism is the double vibrations motor.
3. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that described vibrating mechanism is a common electric rotating machine interlock crank-swinging mechanism.。
4. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that described charging aperture and discharging opening are opened in the two ends of the correspondence of vibratory sieve respectively.
5. the device of a kind of separating plastic particle surface powder according to claim 1 it is characterized in that described vibratory sieve is horizontally placed to and slightly be inclination, and the angle of level is between the 0-15 degree.
6. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that the flexible connecting pipe into and out of air port and air channel pipeline of described vibratory sieve casing top and the bottom is the plastic ripple flexible pipe.
7. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that the flexible connecting pipe into and out of air port and air channel pipeline of described vibratory sieve casing top and the bottom is a rubber hose.
8. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that described separation dust collector unit is the whirlwind centrifugal separator, comprises air inlet, rotation disengagement chamber, control of dust casket and gas outlet.
9. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that described separation dust collector unit is the intercept type filtering separation device, comprises filter chamber and filter bag.
10. the device of a kind of separating plastic particle surface powder according to claim 1 is characterized in that all disposing on described charging aperture and the discharging opening sealed valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100468187A CN101406883A (en) | 2007-10-08 | 2007-10-08 | Device for separating powder on particle surface of plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100468187A CN101406883A (en) | 2007-10-08 | 2007-10-08 | Device for separating powder on particle surface of plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101406883A true CN101406883A (en) | 2009-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100468187A Pending CN101406883A (en) | 2007-10-08 | 2007-10-08 | Device for separating powder on particle surface of plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101406883A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400933A (en) * | 2014-11-20 | 2015-03-11 | 信易电热机械有限公司 | Electrostatic precipitator for plastic particles |
| CN104617190A (en) * | 2014-12-25 | 2015-05-13 | 广州市鸿利光电股份有限公司 | Cleaning device and cleaning method for LED dust particles |
| CN105880159A (en) * | 2016-03-14 | 2016-08-24 | 南京佑天金属科技有限公司 | Efficient particle separator |
| CN106514894A (en) * | 2016-12-04 | 2017-03-22 | 重庆精榜高分子材料有限公司 | Processing device for raw materials of plastic particles |
| CN106584708A (en) * | 2016-12-07 | 2017-04-26 | 湖南万容科技股份有限公司 | Material sorting system |
| CN106622962A (en) * | 2015-11-04 | 2017-05-10 | 上海澳东物流有限公司 | Stone removing machine for roasted coffee beans |
| CN107560957A (en) * | 2016-06-30 | 2018-01-09 | 中国石油化工股份有限公司 | A kind of evaluation method of catalyst abrasion index |
| CN107999391A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Powder sieving mechanism |
| CN107999392A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Molding powder sifter |
| CN108114896A (en) * | 2017-12-04 | 2018-06-05 | 郑州格瑞塔电子信息技术有限公司 | A kind of air flow impact type yellow sand screens drying device |
| CN108787455A (en) * | 2018-07-25 | 2018-11-13 | 软控股份有限公司 | The bugduster of oscillatory type |
| CN109590284A (en) * | 2019-01-04 | 2019-04-09 | 中国恩菲工程技术有限公司 | Granule dedusting equipment and granule dedusting method |
| CN110788002A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln with winnowing removal device |
| CN110787999A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN110788000A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN111113726A (en) * | 2020-01-13 | 2020-05-08 | 刘林杰 | Polyethylene plastic sinking material impurity removing system |
| CN112173754A (en) * | 2020-09-10 | 2021-01-05 | 李作冷 | Plastic granules lifting machine |
| CN113941214A (en) * | 2020-07-17 | 2022-01-18 | 中冶长天国际工程有限责任公司 | Tandem type activated carbon dust purification system and purification method thereof |
| CN113941216A (en) * | 2020-07-17 | 2022-01-18 | 中冶长天国际工程有限责任公司 | Centrifugal type active carbon dust purification system and purification method thereof |
| CN114558778A (en) * | 2022-04-29 | 2022-05-31 | 中国空气动力研究与发展中心计算空气动力研究所 | Micron-sized powder material controllable classification airflow sieve and screening method |
| CN116141538A (en) * | 2022-12-30 | 2023-05-23 | 南通开普乐工程塑料有限公司 | Raw material screening equipment for plastic product production |
| CN116586305A (en) * | 2023-05-30 | 2023-08-15 | 河北万岁药业有限公司 | Powder medicine pipeline conveying screening equipment |
-
2007
- 2007-10-08 CN CNA2007100468187A patent/CN101406883A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400933A (en) * | 2014-11-20 | 2015-03-11 | 信易电热机械有限公司 | Electrostatic precipitator for plastic particles |
| CN104617190A (en) * | 2014-12-25 | 2015-05-13 | 广州市鸿利光电股份有限公司 | Cleaning device and cleaning method for LED dust particles |
| CN104617190B (en) * | 2014-12-25 | 2017-06-06 | 鸿利智汇集团股份有限公司 | The cleaning equipment and method for cleaning of a kind of LED dust granules |
| CN106622962A (en) * | 2015-11-04 | 2017-05-10 | 上海澳东物流有限公司 | Stone removing machine for roasted coffee beans |
| CN105880159A (en) * | 2016-03-14 | 2016-08-24 | 南京佑天金属科技有限公司 | Efficient particle separator |
| CN107560957A (en) * | 2016-06-30 | 2018-01-09 | 中国石油化工股份有限公司 | A kind of evaluation method of catalyst abrasion index |
| CN106514894A (en) * | 2016-12-04 | 2017-03-22 | 重庆精榜高分子材料有限公司 | Processing device for raw materials of plastic particles |
| CN106584708A (en) * | 2016-12-07 | 2017-04-26 | 湖南万容科技股份有限公司 | Material sorting system |
| CN107999391A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Powder sieving mechanism |
| CN107999392A (en) * | 2017-11-30 | 2018-05-08 | 宁波鑫神泽汽车零部件有限公司 | Molding powder sifter |
| CN108114896A (en) * | 2017-12-04 | 2018-06-05 | 郑州格瑞塔电子信息技术有限公司 | A kind of air flow impact type yellow sand screens drying device |
| CN108787455A (en) * | 2018-07-25 | 2018-11-13 | 软控股份有限公司 | The bugduster of oscillatory type |
| CN109590284A (en) * | 2019-01-04 | 2019-04-09 | 中国恩菲工程技术有限公司 | Granule dedusting equipment and granule dedusting method |
| CN110788002A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln with winnowing removal device |
| CN110787999A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN110788000A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN111113726A (en) * | 2020-01-13 | 2020-05-08 | 刘林杰 | Polyethylene plastic sinking material impurity removing system |
| CN113941216A (en) * | 2020-07-17 | 2022-01-18 | 中冶长天国际工程有限责任公司 | Centrifugal type active carbon dust purification system and purification method thereof |
| CN113941214A (en) * | 2020-07-17 | 2022-01-18 | 中冶长天国际工程有限责任公司 | Tandem type activated carbon dust purification system and purification method thereof |
| CN113941214B (en) * | 2020-07-17 | 2023-12-29 | 中冶长天国际工程有限责任公司 | Series-connection type activated carbon dust purification system and purification method thereof |
| CN113941216B (en) * | 2020-07-17 | 2023-12-29 | 中冶长天国际工程有限责任公司 | Centrifugal activated carbon dust purification system and purification method thereof |
| CN112173754A (en) * | 2020-09-10 | 2021-01-05 | 李作冷 | Plastic granules lifting machine |
| CN114558778A (en) * | 2022-04-29 | 2022-05-31 | 中国空气动力研究与发展中心计算空气动力研究所 | Micron-sized powder material controllable classification airflow sieve and screening method |
| CN116141538A (en) * | 2022-12-30 | 2023-05-23 | 南通开普乐工程塑料有限公司 | Raw material screening equipment for plastic product production |
| CN116586305A (en) * | 2023-05-30 | 2023-08-15 | 河北万岁药业有限公司 | Powder medicine pipeline conveying screening equipment |
| CN116586305B (en) * | 2023-05-30 | 2023-09-19 | 河北万岁药业有限公司 | Powder medicine pipeline conveying screening equipment |
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Application publication date: 20090415 |