CN104492557A - Mechanical activation reactor capable of enhancing polysaccharide high polymer modification - Google Patents
Mechanical activation reactor capable of enhancing polysaccharide high polymer modification Download PDFInfo
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- CN104492557A CN104492557A CN201410786940.8A CN201410786940A CN104492557A CN 104492557 A CN104492557 A CN 104492557A CN 201410786940 A CN201410786940 A CN 201410786940A CN 104492557 A CN104492557 A CN 104492557A
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- cylinder body
- outer cylinder
- high polymer
- mechanical activation
- grinding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
Abstract
The invention discloses a mechanical activation reactor capable of enhancing polysaccharide high polymer modification. An outer barrel is in a horizontal structure and a grinding inner barrel is arranged in the outer barrel; a speed reducer I is connected with a stirring shaft by a shaft coupler; the stirring shaft penetrates through a through hole in an end cover of the outer barrel and is inserted into the grinding inner barrel; the stirring shaft is fixed at the two ends of the outer barrel by bearing seats at the two ends; a jacket is arranged outside the grinding inner barrel; a material inlet/outlet is formed in the outer barrel and is communicated with the grinding inner barrel; the grinding inner barrel is internally provided with grinding balls; the stirring shaft is provided with paddles and a material scraping screw belt; the paddles are mounted on the stirring shaft in a staggered manner; and the material scraping screw belt is mounted on the stirring shaft. The mechanical activation reactor is provided with the paddles and the material scraping screw belt so that the grinding balls in the grinding inner barrel can be driven by the paddles and the material scraping screw belt to move back and forth, and the disturbance of the grinding balls is enhanced, and furthermore, materials can react more uniformly and the surface updating is more rapid; and the reaction time is effectively shortened, the loss of the raw materials is reduced and the quality of a product is improved.
Description
Technical field
The present invention relates to a kind of agitating ball mill, specifically, is a kind of mechanical activation reactor strengthening polysaccharide modified-high polymer.
Background technology
Polysaccharide high polymer comprises starch, lignocellulosic, shitosan etc., polysaccharide high polymer is all generally crystalline high polymer, be made up of crystal region and amorphous region, the design feature of crystal region is that hydroxyl is in molecule or intermolecular formation hydrogen bond, form the structure of highly crystalline, most of reaction reagent can only arrive amorphous region, and can not arrive crystal region, and modification and the deep processing efficiency that therefore will improve polysaccharide crystalline high polymer just must carry out activation process to them.
Mechanical activation (Mechanical Activation) is an emerging overlapping edges technology, refer to that solid matter is under the mechanical force such as friction, collision, impact, shearing, crystal structure and physical and chemical performance are changed, make some mechanical can be transformed into the interior energy of material, thus causing the chemism of solid to increase, it belongs to the category of machinery (power) chemistry.Deliver first section of relevant " mechanical force and chemical " paper so far in 40 years from Peters, this technology has been widely used in preparing the synthesis etc. of ultra micro and nanometer powder, nano composite material, strengthened dispersion alloy structural material, refining of metal, mineral and refuse process, organic material.
Agitating ball mill a kind ofly is often used to such as to pulverize in the liquid phase or the mechanical activation reactor of dispersing solid, is widely used in the industries such as biology, food, cosmetics, medicine, pottery, material and agricultural chemicals.In such mechanical activation reactor, can be solid-solid phase reaction, also can be liquid-solid phase reaction.In the course of reaction of mechanical activation reactor, by abrading-ball, relative motion between abrading-ball and material, produce the mechanical forces such as friction, collision, impact, shearing makes the activation of polysaccharide high polymer carry out with reaction simultaneously, the effect of mechanical force can make the division of the fibre bundle of polysaccharide high polymer, the obvious refinement of particle on the one hand, crystal structure is damaged, degree of crystallinity declines, crystallite dimension reduces, the energy of hydrogen bond improves, and produces high activity hydroxyl or forms highly active large free radical because of molecular chain rupture, is conducive to it and carries out modified-reaction; Mechanical activation makes material inside produce a large amount of distortions of lattice on the other hand, and some mechanical can change chemical energy into and store, and makes material be in unstable upper state, thus also makes the reactivity of polysaccharide high polymer improve.
But traditional agitating ball mill still also exists a lot of defect in strengthening polysaccharide modified-high polymer:
One is, because relating to heated at constant temperature control while of materials inside, the standing rotation counting axle stirring or independent urceolus separately, therefore, it is large that traditional mechanical activating apparatus exists power consumption, and equipment is huge and reaction speed slow, the defects such as production capacity is low.
Two are, agitating ball mill in the running, due to the impact between a large amount of mill balls, in mechanical milling process, between ball and ball, between ball and material, mutual impact energy produces heat, local temperature may be caused to raise, cause material to be heated uneven, and easily in the process of heating, occur material wall sticking phenomenon, material loss is also comparatively large, and control of product quality is more difficult.
Three are, in solid phase reaction for polysaccharide high polymer, because solid phase reaction is different from liquid phase reactor, its course of reaction is solid and solid contact, mixing between material with contact insufficient, the energy exchange of storeroom is restricted, and the lattice of each solid-phase reactant is high-sequential, the movement of lattice molecule is more difficult, must improve reaction temperature for this reason.And solid matter in addition to metal, the non-conductor of heat mostly, rely on conventional external heating mode, namely the heat transfer form relied under thermograde promotion provides the energy reacted and needed for diffusion velocity to reactant molecule, then reaction just can must be made to reach the speed with practical significance by very high heating-up temperature.But organic matter is usually not resistant against high temperatures, be easy to decomposition, charing etc. under the high temperature conditions, so synthesis in solid state is confined to the high temperature sintering of inorganic material mostly for a long time, high temperature gelatinization wall sticking phenomenon must be solved to the high-temperature heating of polysaccharide high polymer, must make to be in Surface Renewal state constantly between material and calandria.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of material reaction even, material loss is little, and product quality is high, and reaction mass is in the mechanical activation reactor of the strengthening polysaccharide modified-high polymer of Surface Renewal state constantly.
In order to realize foregoing invention object, technical scheme of the present invention is as follows:
A kind of mechanical activation reactor strengthening polysaccharide modified-high polymer, outer cylinder body is horizontal type structure, outer cylinder body inside is provided with grinding inner core, reductor I is connected with shaft by shaft coupling, shaft is inserted in grinding inner core through the through hole on outer cylinder body end cap, and shaft is fixed on the two ends of outer cylinder body by the bearing block at two ends; Be provided with chuck outside described grinding inner core, outer cylinder body is provided with material import and export, and material import and export communicates with grinding inner core, and be provided with mill ball in grinding inner core, described shaft is equipped with blade and scraper ribbon, described blade crossings is arranged on shaft; Described scraper ribbon is arranged on shaft.
As further improvement, the outermost end of described scraper ribbon and the inwall interval 1-2mm of grinding inner core.
As further improvement, described outer cylinder body is connected with drive unit, the gear train that described drive unit comprises reductor II and is arranged on outer cylinder body; Described reductor controls the rotation of outer cylinder body by engaging with gear train to be connected.
As further improvement, described outer cylinder body outer ring is provided with support roller.
As further improvement, in described chuck, be provided with heater and temperature controller.
As further improvement, described heater comprises heat medium and heater.
Preferably, described heat medium is conduction oil or steam; Described heater is electric heater.
As further improvement, the end cap of described outer cylinder body one end is provided with bleeding point.
Preferably, described mill ball is alumina ceramic grinding ball, zirconium oxide abrasive ball, steel ball grinding ball, ceramic grinding ball or carborundum mill ball.
During use, outer cylinder body is with action low speed gyration (rotating speed 10-30r/min) by reductor II, shaft band blade and scraper ribbon make reverse high-speed rotation (rotating speed 100-400 r/min) under the effect of reductor I, namely outer cylinder body and shaft rotate backward, a large amount of mill balls is placed in grinding inner core, mill ball moves around under the drive of blade and scraper ribbon, make material reaction evenly, Surface Renewal is faster, and the inwall interval of the scraper ribbon outermost end be provided with on shaft and grinding inner core is little, material can be glued to the inwall of grinding inner core and carry out scraper removing, blade can be scraped clearly the material that mill ball bonds simultaneously, basic solution process materials of heating glues the phenomenon of wall, monitored by temperature controller in rotation process, adjusted by flow and establish valve or electric adjustable to establish heating medium temperature in valve regulation chuck or electric heater electric thermal power, thus thermostatic control is carried out to the temperature in outer cylinder body.
Compared with prior art, beneficial effect of the present invention is as follows:
1, the present invention is provided with blade and scraper ribbon on shaft, the mill ball grinding inner core can be moved around under the drive of blade and scraper ribbon, enhance the perturbation of mill ball, thus make material reaction evenly, Surface Renewal is faster, effective Reaction time shorten, and the uniformity substitution of product improves greatly; The inwall interval of the outermost end of the scraper ribbon on shaft and grinding inner core is little, the sticky wall material that can grind on inner tube wall carries out scraper removing, blade can be scraped clearly the material that mill ball bonds simultaneously, thus fundamentally solve the phenomenon of materials from bonding in course of reaction, reduce the loss of raw material, improve product quality.
2, outer cylinder body of the present invention can do gyration, produce centrifugal force by gyration and realize hypergravity, be applicable to polysaccharide high polymer liquid-liquid or liquid-solid heterogeneous flowing contact, the gravitational field of its alternate transmission area and renewal frequency ratio routine is much bigger, the impact of the surface tension effects of liquid is very little, improves the reaction efficiency of material.
3, outer cylinder body of the present invention and shaft can do the rotation of reverse speed change, drive mill ball to produce powerful friction, collision, impact and shearing force, effectively destroy the closely knit structure of polysaccharide high polymer, thus strengthening modified-reaction; Meanwhile, outer cylinder body and grinding inner core in shaft between relative motion, also create powerful centrifugal force, make microcosmic mix and mass transfer, diabatic process strengthened effectively, make material reaction more abundant.
4, outer cylinder body of the present invention does low speed gyration under reductor II acts on, shaft can run up under very little reductor power drives, and drive the mill ball in grinding inner core to do efficient motion, decrease the power consumption of equipment, improve the mixing speed of material, thus improve the production capacity of unit equipment, the production intensity of effective raising equipment, and by automatic control system, make operation more easy.
5, outer cylinder body outer ring of the present invention is provided with support roller, decrease the loss that outer cylinder body does turnover motion, improve service life, and can for different materials and method of modifying, the material time of staying is in the reactor controlled, i.e. the reaction time by the support roller adjustment gradient of outer cylinder body and rotating speed.
6, the present invention carries out real time temperature monitoring by temperature controller to chuck inner heating device, thus regulate the rotating speed of the flow of heat medium or the electric thermal power of heater and outer cylinder body and shaft in chuck further, ensure that the homogeneous temperature in grinding inner core and the reaction environment of constant temperature, thus the stability of enhancing product performance.
7, of the present invention simple and reasonable, can realize Automated condtrol, accurately can control the modification degree of polysaccharide high polymer by controlling the parameter such as reaction time and temperature, ratio of grinding media to material, rotating speed, easy to operate, product quality is high, is suitable for applying.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 is plan structure schematic diagram of the present invention.
Accompanying drawing identifies:
1-reductor I, 2-shaft, 3-end cap, 4-bleeding point, 5-outer cylinder body, 6-chuck, 7-material import and export, 8-grinds inner core, 9-blade, 10-scraper ribbon, 11-mill ball, 12-temperature controller, 13-reductor II, 14-gear train, 15-support roller.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1:
A kind of mechanical activation reactor strengthening polysaccharide modified-high polymer, outer cylinder body 5 is horizontal type structure, outer cylinder body 5 inside is provided with grinding inner core 8, reductor I 1 is connected with shaft 2 by shaft coupling, shaft 2 is inserted in grinding inner core 8 through the through hole on outer cylinder body 5 end cap 3, and shaft 2 is fixed on the two ends of outer cylinder body 5 by the bearing block at two ends; Be provided with the chuck 6 that heater is housed outside described grinding inner core 8, described heater comprises heat medium and heater, and wherein heat medium is conduction oil, and heater is electric heater.Temperature controller 12 is provided with in chuck 6.Be provided with material import and export 7 above outer cylinder body 5, material import and export 7 communicates with grinding inner core 8, and be provided with mill ball 11 in grinding inner core 8, the end cap 3 of described outer cylinder body 5 one end is provided with bleeding point 4, and the waste gas that production process can be produced extracts outer cylinder body out.Shaft 2 is equipped with blade 9 and scraper ribbon 10, described blade 9 is staggered installation of on shaft 2; Described scraper ribbon 10 is arranged on shaft 2.The outermost end of scraper ribbon 10 and the inwall interval 1mm of grinding inner core 8.
During use, shaft 2 drives blade 9 and scraper ribbon 10 under the effect of reductor I 1, make high-speed rotation (rotating speed 100-400 r/min), a large amount of mill balls 11 is placed in grinding inner core 8, mill ball 11 moves around under the drive of blade 9 and scraper ribbon 10, make material reaction evenly, Surface Renewal is faster, and the scraper ribbon 10 be provided with on shaft 11, wall material is glued to the inwall of grinding inner core 8 and carries out scraper removing, blade 9 can be scraped clearly the material of bonding on mill ball 11 in motion simultaneously, solves the phenomenon that process materials of heating glues wall at all; Monitored by temperature controller 12 in rotation process, adjusted by flow and establish valve or electric adjustable to establish the temperature of the heat medium in valve regulation chuck 6 or the electric thermal power of electric heater, thus thermostatic control is carried out to the temperature in outer cylinder body 5.
Embodiment 2:
Difference from Example 1 is, during installation, and the outermost end of scraper ribbon 10 and the inwall interval 2mm of grinding inner core 8.Outer cylinder body 5 is connected with drive unit, the gear train 14 that described drive unit comprises reductor II 13 and is arranged on outer cylinder body 5; Reductor II 13 controls the rotation of outer cylinder body 5 by engaging with gear train 14 to be connected.Described outer cylinder body 5 outer ring is provided with support roller 15.Heat medium in chuck 6 is steam.Outer cylinder body 5 outer ring is provided with support roller 15, decrease the loss that outer cylinder body 5 does turnover motion, improve service life, and can for different materials and method of modifying, the gradient of outer cylinder body 5 is adjusted and rotating speed controls the material time of staying in the reactor, i.e. the reaction time by support roller 15.
During use, outer cylinder body 5 is with action low speed gyration (rotating speed 30-50r/min) by reductor II 13, shaft 2 drives blade 9 and scraper ribbon 10 under the effect of reductor I 1, make reverse high-speed rotation (rotating speed 100-400 r/min), namely outer cylinder body 5 and shaft 2 rotate backward, a large amount of mill balls 11 is placed in grinding inner core 8, mill ball 11 moves around under the drive of blade 9 and scraper ribbon 10, make material reaction evenly, Surface Renewal is faster, and the scraper ribbon 10 be provided with on shaft 11, wall material is glued to the inwall of grinding inner core 8 and carries out scraper removing, blade 9 can be scraped clearly the material of bonding on mill ball 11 in motion simultaneously, basic solution process materials of heating glues the phenomenon of wall.
Above-described mill ball 11 is alumina ceramic grinding ball, zirconium oxide abrasive ball, steel ball grinding ball, ceramic grinding ball or carborundum mill ball, can carry out various selection according to the characteristic of material.
Claims (9)
1. strengthen the mechanical activation reactor of polysaccharide modified-high polymer for one kind, outer cylinder body (5) is horizontal type structure, outer cylinder body (5) inside is provided with grinding inner core (8), reductor I (1) is connected with shaft (2) by shaft coupling, shaft (2) is inserted in grinding inner core (8) through the through hole on outer cylinder body (5) end cap (3), and shaft (2) is fixed on the two ends of outer cylinder body (5) by the bearing block at two ends; Described grinding inner core (8) outside is provided with chuck (6), outer cylinder body (5) is provided with material import and export (7), material import and export (7) communicates with grinding inner core (8), mill ball (11) is provided with in grinding inner core (8), it is characterized in that: described shaft (2) is equipped with blade (9) and scraper ribbon (10), described blade (9) is staggered installation of on shaft (2); Described scraper ribbon (10) is arranged on shaft (2).
2. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 1, is characterized in that: the outermost end of described scraper ribbon (10) and the inwall interval 1-2mm of grinding inner core (8).
3. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 1, it is characterized in that: described outer cylinder body (5) is connected with drive unit, described drive unit comprises reductor II (13) and is arranged on the gear train (14) on outer cylinder body (5); Described reductor controls the rotation of outer cylinder body (5) by engaging with gear train (14) to be connected.
4. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 3, is characterized in that: described outer cylinder body (5) outer ring is provided with support roller (15).
5., according to the mechanical activation reactor of the arbitrary described strengthening polysaccharide modified-high polymer of claim 1-4, it is characterized in that: in described chuck (6), be provided with heater and temperature controller (12).
6. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 5, is characterized in that: described heater comprises heat medium and heater.
7. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 6, is characterized in that: described heat medium is conduction oil or steam; Described heater is electric heater.
8. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 1, is characterized in that: the end cap (3) of described outer cylinder body (5) one end is provided with bleeding point (4).
9. the mechanical activation reactor of strengthening polysaccharide modified-high polymer according to claim 1, is characterized in that: described mill ball (11) is alumina ceramic grinding ball, zirconium oxide abrasive ball, steel ball grinding ball, ceramic grinding ball or carborundum mill ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786940.8A CN104492557A (en) | 2014-12-18 | 2014-12-18 | Mechanical activation reactor capable of enhancing polysaccharide high polymer modification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786940.8A CN104492557A (en) | 2014-12-18 | 2014-12-18 | Mechanical activation reactor capable of enhancing polysaccharide high polymer modification |
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| Publication Number | Publication Date |
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| CN104492557A true CN104492557A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410786940.8A Pending CN104492557A (en) | 2014-12-18 | 2014-12-18 | Mechanical activation reactor capable of enhancing polysaccharide high polymer modification |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984791A (en) * | 2015-06-24 | 2015-10-21 | 陆丽曼 | Efficient environment-friendly ball grinding mill for ceramic production |
| CN105381848A (en) * | 2015-12-22 | 2016-03-09 | 常熟市方塔涂料化工有限公司 | Horizontal type coating grinding machine |
| CN108636528A (en) * | 2018-08-01 | 2018-10-12 | 浙江越丰茶叶机械有限公司 | A kind of continous way ball milling tea milling device |
| CN108636529A (en) * | 2018-08-01 | 2018-10-12 | 浙江越丰茶叶机械有限公司 | A kind of grinding rabbling mechanism of continous way ball milling tea milling device |
| CN109231391A (en) * | 2018-10-23 | 2019-01-18 | 龚杜美瑾 | Sewage treatment spiral agitator |
| CN115253756A (en) * | 2022-06-07 | 2022-11-01 | 天华化工机械及自动化研究设计院有限公司 | Double-shaft kneading machine for kneading pulp |
| CN115364961A (en) * | 2022-09-01 | 2022-11-22 | 江苏香汇云彩农业有限公司 | Edible agricultural product processing equipment |
-
2014
- 2014-12-18 CN CN201410786940.8A patent/CN104492557A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984791A (en) * | 2015-06-24 | 2015-10-21 | 陆丽曼 | Efficient environment-friendly ball grinding mill for ceramic production |
| CN105381848A (en) * | 2015-12-22 | 2016-03-09 | 常熟市方塔涂料化工有限公司 | Horizontal type coating grinding machine |
| CN108636528A (en) * | 2018-08-01 | 2018-10-12 | 浙江越丰茶叶机械有限公司 | A kind of continous way ball milling tea milling device |
| CN108636529A (en) * | 2018-08-01 | 2018-10-12 | 浙江越丰茶叶机械有限公司 | A kind of grinding rabbling mechanism of continous way ball milling tea milling device |
| CN109231391A (en) * | 2018-10-23 | 2019-01-18 | 龚杜美瑾 | Sewage treatment spiral agitator |
| CN109231391B (en) * | 2018-10-23 | 2023-07-18 | 龚杜美瑾 | Spiral stirrer for sewage treatment |
| CN115253756A (en) * | 2022-06-07 | 2022-11-01 | 天华化工机械及自动化研究设计院有限公司 | Double-shaft kneading machine for kneading pulp |
| CN115253756B (en) * | 2022-06-07 | 2024-02-23 | 天华化工机械及自动化研究设计院有限公司 | Double-shaft kneading machine with kneading paddles |
| CN115364961A (en) * | 2022-09-01 | 2022-11-22 | 江苏香汇云彩农业有限公司 | Edible agricultural product processing equipment |
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Application publication date: 20150408 |
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