CN110302884A - A kind of feed processing grinding device - Google Patents

A kind of feed processing grinding device Download PDF

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Publication number
CN110302884A
CN110302884A CN201910638364.5A CN201910638364A CN110302884A CN 110302884 A CN110302884 A CN 110302884A CN 201910638364 A CN201910638364 A CN 201910638364A CN 110302884 A CN110302884 A CN 110302884A
Authority
CN
China
Prior art keywords
grinding
case
grinding case
setting
driving
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
Application number
CN201910638364.5A
Other languages
Chinese (zh)
Inventor
刘鹰昊
王志军
尹强
武倩
常春
张晓庆
吴洪新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grassland Research Institute of Chinese Academy of Agricultural Sciences
Original Assignee
Grassland Research Institute of Chinese Academy of Agricultural Sciences
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Grassland Research Institute of Chinese Academy of Agricultural Sciences filed Critical Grassland Research Institute of Chinese Academy of Agricultural Sciences
Priority to CN201910638364.5A priority Critical patent/CN110302884A/en
Publication of CN110302884A publication Critical patent/CN110302884A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23NMACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N17/00Apparatus specially adapted for preparing animal feeding-stuffs
    • A23N17/02Fodder mashers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/08Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/10Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details
    • B02C18/18Knives; Mountings thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details
    • B02C18/24Drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00Other disintegrating devices or methods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00Disintegrating plant with or without drying of the material

Abstract

The invention discloses a kind of feed processing grinding devices, grinding case including the cylindrical hollow setting in an inside, a driving mechanism is fixedly installed on the grinding case, the driving end of the driving mechanism extends in grinding case, driving mechanism driving end upper end in the grinding case is fixedly installed with a crushing mechanism, driving mechanism driving end positioned at the crushing mechanism lower position is fixedly installed with a grinding mechanism, the beneficial effects of the present invention are: the present invention relates to a kind of feed processing grinding devices, in specific use, starting driving mechanism drives crushing mechanism to be rotated with grinding mechanism first, raw material is poured into grinding case by feeding mechanism again, crushing mechanism is stirred and is crushed to it at this time, the raw material being crushed falls in grinding mechanism and is ground, screw thread in simultaneous grinding mechanism to Raw material squeezes downwards, so that raw material is closely touched with grinding mechanism, the simple and convenient efficiency and effect for improving raw material grinding.

Description

A kind of feed processing grinding device
Technical field
The invention belongs to feed processing technology, specially a kind of feed processing grinding device.
Background technique
Traditional feed processing grinding device, when being ground, there is no the functions of pressing to raw material, only Be simply placed with grind it is in-house so that raw material can only be by itself weight and subsequent into raw material It squeezes, could offset and be ground with grinding mechanism, so that existing grinding device grinding efficiency and efficiency are more Lowly, need to design a kind of feed processing grinding device to this.
Summary of the invention
The object of the invention is that providing a kind of feed processing grinding device to solve the above-mentioned problems, solve Existing grinding device only is simply placed with grinding it is in-house so that raw material can only rely on itself weight with And the subsequent extruding into raw material, it could offset and be ground with grinding mechanism, so that existing grinding device is ground Efficiency and the more low problem of efficiency.
To solve the above-mentioned problems, the present invention provides a kind of technical solutions:
A kind of feed processing grinding device, the grinding case including the cylindrical hollow setting in an inside, on the grinding case It is fixedly installed with a driving mechanism, the driving end of the driving mechanism extends in grinding case, in the grinding case Driving mechanism driving end upper end is fixedly installed with a crushing mechanism, and the driving mechanism positioned at the crushing mechanism lower position is driven Moved end is fixedly installed with a grinding mechanism, and the grinding case is provided with a discharging mechanism on the position of bottom end, described The upper surface of grinding case is fixedly installed with a feeding mechanism.
Preferably, the driving mechanism includes a rotating bar, the rotating bar is rotatably connected on grinding by bearing Between the upper and lower ends tank wall of case, the upper end of the rotating bar through the upper surface for grinding case and is extended to outside grinding case, described One end fixing sleeve that rotating bar is located at outside grinding case is connected to a first bevel gear, and the upper surface of the grinding case is fixedly connected There is a driving motor, the output end of the driving motor is fixedly connected with a second bevel gear by shaft coupling, and described One bevel gear is meshed with second bevel gear.
Preferably, the crushing mechanism includes the ring crush seat of a trapezoidal setting, the ring crush seat is solid Dingan County is mounted in grinding case on the inside tank wall of apical position, and the upper end opening of the ring crush seat is to lower ending opening in change Narrow trend setting corresponds to fixing sleeve on the rotating bar bar wall that the ring crush seat is set and is connected to a broken tool apron, described broken The upper end side wall of broken tool apron is arranged to bottom side of the wall in thicker trend, in uniform etc. around shape on the lateral wall of the broken tool apron Away from be fixedly connected with four groups of crushing cutters, crushing cutter described in every group includes several crushing cutters in parallel shape setting, if every group Crushing cutter described in dry root is in the trend setting that shortens from top to bottom.
Preferably, the grinding mechanism includes the grinding base being arranged in a ring, the grinding base is fixedly connected on On tank wall inside the grinding case of ring crush seat lower position, the upper end opening of the grinding base is in narrow to lower ending opening Trend setting corresponds to the grinding block that fixing sleeve on the rotating bar bar wall of the grinding base position is connected to a cylindrical setting, The upper end side wall of the grinding block is arranged to bottom side of the wall in the trend that narrows, and is provided with a circle spiral shell on the lateral wall of the grinding block Line.
Preferably, the discharging mechanism includes the slope block of one piece of trapezoidal setting, the slope block is fixedly connected on grinding The inner box bottom of case, grinding case fixing sleeve on the tank wall of bottom position are connected to the discharging being obliquely arranged The output end of pipe, the discharge nozzle through the correspondence tank wall for grinding case and extends to outside grinding case.
Preferably, the feeding mechanism includes a feed pipe, the feed pipe is fixedly mounted on the upper table of grinding case The lower ending opening in face, the feed pipe is connected with grinding case, and the upper end of the feed pipe through the upper surface for grinding case and is prolonged It extends to outside grinding case, one end that the feed pipe is located at outside grinding case is fixedly connected with a loading hopper.
Preferably, the lower surface of the grinding case is fixedly connected with four support columns, four support columns are about grinding It is in rectangular setting at the center of tumbling barrel lower surface.
Preferably, the lower surface of the ring crush seat is in the setting that is connected with the upper surface of grinding base, it is described broken The lower surface of tool apron is with broken tool apron in the setting that is connected.
The beneficial effects of the present invention are: the present invention relates to a kind of feed processing grinding device, specific in use, first First starting driving mechanism drives crushing mechanism to be rotated with grinding mechanism, then raw material is poured into grinding case by feeding mechanism Interior, crushing mechanism is stirred and is crushed to it at this time, and the raw material being crushed falls in grinding mechanism and ground, simultaneous grinding Screw thread in mechanism squeezes downwards to raw material, so that raw material is closely touched with grinding mechanism, simple and convenient improves raw material The efficiency and effect of grinding.
Detailed description of the invention:
Detailed description will be given by the following detailed implementation and drawings by the present invention for ease of explanation,.
Fig. 1 is overall structure diagram of the invention;
Fig. 2 is the overlooking structure diagram of crushing mechanism of the invention;
Fig. 3 is the present invention looks up structural representation of grinding mechanism of the invention.
In figure:
1, case is ground;
2, driving mechanism;21, rotating bar;22, first bevel gear;23, driving motor;24, second bevel gear;
3, crushing mechanism;31, ring crush seat;32, it is crushed tool apron;33, crushing cutter;
4, mechanism is ground;41, grinding base;42, grinding block;43, screw thread;
5, discharging mechanism;51, slope block;52, discharge nozzle;
6, feeding mechanism;61, feed pipe;62, loading hopper;
7, support column.
Specific embodiment:
As shown in Figure 1-3, present embodiment uses following technical scheme:
A kind of feed processing grinding device, the grinding case 1 including the cylindrical hollow setting in an inside are ground solid on case 1 Dingan County is equipped with a driving mechanism 2, and the driving end of driving mechanism 2 extends in grinding case 1, the driving machine in grinding case 1 Structure 2 drives end upper end to be fixedly installed with a crushing mechanism 3, drives end solid positioned at the driving mechanism 2 of 3 lower position of crushing mechanism Dingan County is equipped with a grinding mechanism 4, and grinding case 1 is provided with a discharging mechanism 5 on the position of bottom end, grinds the upper of case 1 Surface is fixedly installed with a feeding mechanism 6.
Wherein, driving mechanism 2 includes a rotating bar 21, and rotating bar 21 is rotatably connected on the upper of grinding case 1 by bearing Between the tank wall of lower both ends, the upper end of rotating bar 21 through the upper surface for grinding case 1 and is extended to outside grinding case 1, rotating bar 21 It is connected to a first bevel gear 22 in one end fixing sleeve outside grinding case 1, the upper surface of grinding case 1 is fixedly connected with a drive Dynamic motor 23, the output end of driving motor 23 are fixedly connected with a second bevel gear 24, first bevel gear 22 by shaft coupling It is meshed with second bevel gear 24.
Wherein, crushing mechanism 3 includes the ring crush seat 31 of a trapezoidal setting, and ring crush seat 31 is fixedly mounted on Case 1 is ground on the inside tank wall of apical position, the upper end opening of ring crush seat 31 is set to lower ending opening in the trend that narrows It sets, fixing sleeve is connected to a broken tool apron 32 on the 21 bar wall of rotating bar of corresponding 31 position of ring crush seat, is crushed tool apron 32 Upper end side wall is arranged to bottom side of the wall in thicker trend, and being crushed on the lateral wall of tool apron 32 is in surround the shape uniformly and equidistantly company of fixation Four groups of crushing cutters 33 are connected to, every group of crushing cutter 33 includes several crushing cutters 33 in parallel shape setting, and every group several broken Knife 33 is from top to bottom in the trend setting that shortens.
Wherein, grinding mechanism 4 includes a grinding base 41 being arranged in a ring, and grinding base 41, which is fixedly connected on, is located at annular On the 1 inside tank wall of grinding case of broken 31 lower position of seat, the upper end opening of grinding base 41 is set to lower ending opening in the trend that narrows It sets, fixing sleeve is connected to the grinding block 42 of a cylindrical setting, grinding on the 21 bar wall of rotating bar of corresponding 41 position of grinding base The upper end side wall of block 42 is arranged to bottom side of the wall in the trend that narrows, and is provided with a circle screw thread 43 on the lateral wall of grinding block 42.
Wherein, discharging mechanism 5 includes the slope block 51 of one piece of trapezoidal setting, and slope block 51 is fixedly connected on the interior of grinding case 1 Portion's bottom, the grinding fixing sleeve on the tank wall of bottom position of case 1 are connected to the discharge nozzle being obliquely arranged 52, discharge nozzle 52 output end is through the correspondence tank wall for grinding case 1 and extends to outside grinding case 1.
Wherein, feeding mechanism 6 includes a feed pipe 61, and feed pipe 61 is fixedly mounted on the upper surface of grinding case 1, charging The lower ending opening of pipe 61 is connected with grinding case 1, and the upper end of feed pipe 61 through the upper surface for grinding case 1 and extends to grinding case Outside 1, one end that feed pipe 61 is located at outside grinding case 1 is fixedly connected with a loading hopper 62.
Wherein, the lower surface for grinding case 1 is fixedly connected with four support columns 7, and four support columns 7 are about grinding 1 following table of case It is in rectangular setting at the center in face.
Wherein, the lower surface of ring crush seat 31 is crushed tool apron 32 with the upper surface of grinding base 41 in the setting that is connected Lower surface is with broken tool apron 32 in the setting that is connected.
Use state of the invention are as follows: the present invention relates to a kind of feed processing grinding devices to start first when in use Driving motor 23, driving motor 23 pass through 21 turns of the mating band turn lever of first bevel gear 22 and second bevel gear 24 Dynamic, rotating bar 21 drives broken tool apron 32 that crushing cutter 33 is driven to be rotated, while and grinding block 42 and screw thread 43 being driven to carry out It rotates synchronously, can pour into raw material in loading hopper 62 at this time, raw material is broken along the annular that feed pipe 61 is fallen in grinding case 1 In broken seat 31, crushing cutter 33 is crushed and is stirred to the raw material in ring crush seat 31 at this time, is made it possible to raw material Adequately be crushed, when raw material is crushed to it is smaller when could be fallen into grinding base 41 by the lower ending opening of ring crush seat 31, Lesser raw material is ground convenient for subsequent grinding mechanism 4, falls in the raw material in grinding base 41 at this time under the action of screw thread 43 It is pushed down, so that raw material is fully ground between grinding base 41 and grinding block 42, the raw material ground falls in slope block 51 On, and slide into discharge nozzle 52 and be discharged along the gradient, integral grinding process improves raw material grinding while simple and convenient Efficiency and effect.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, the technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (8)

1. a kind of feed processing grinding device, which is characterized in that the grinding case including the cylindrical hollow setting in an inside (1), a driving mechanism (2) is fixedly installed on the grinding case (1), the driving end of the driving mechanism (2), which extends to, grinds In tumbling barrel (1), driving mechanism (2) the driving end upper end being located in grinding case (1) is fixedly installed with a crushing mechanism (3), it is fixedly installed with a grinding mechanism (4) positioned at driving mechanism (2) the driving end of the crushing mechanism (3) lower position, Grinding case (1) is provided with a discharging mechanism (5) on the position of bottom end, and the upper surface of grinding case (1) is fixed One feeding mechanism (6) is installed.
2. a kind of feed processing grinding device according to claim 1, it is characterised in that: driving mechanism (2) packet A rotating bar (21) is included, the rotating bar (21) is rotatably connected between the upper and lower ends tank wall of grinding case (1) by bearing, The upper end of the rotating bar (21) is through the upper surface for grinding case (1) and extends to grinding case (1) outside, rotating bar (21) position It is connected to a first bevel gear (22) in one end fixing sleeve of grinding case (1) outside, the upper surface of grinding case (1) is fixed to be connected It is connected to a driving motor (23), the output end of the driving motor (23) is fixedly connected with one second cone tooth by shaft coupling It takes turns (24), the first bevel gear (22) is meshed with second bevel gear (24).
3. a kind of feed processing grinding device according to claim 1, it is characterised in that: crushing mechanism (3) packet The ring crush seat (31) of a trapezoidal setting is included, the ring crush seat (31) is fixedly mounted on grinding case (1) close to top On the inside tank wall of end position, the upper end opening of the ring crush seat (31), in the trend setting that narrows, is corresponded to lower ending opening Fixing sleeve is connected to a broken tool apron (32), the crushing cutter on rotating bar (21) bar wall of ring crush seat (31) position The upper end side wall of seat (32) is arranged to bottom side of the wall in thicker trend, in equal around shape on the lateral wall of the broken tool apron (32) It is even it is equidistant be fixedly connected with four groups of crushing cutters (33), crushing cutter described in every group (33) includes several in the broken of parallel shape setting Broken knife (33), the every group several crushing cutters (33) are from top to bottom in the trend setting that shortens.
4. a kind of feed processing grinding device according to claim 1, it is characterised in that: grinding mechanism (4) packet The grinding base being arranged in a ring (41) is included, the grinding base (41) is fixedly connected on the orientation under ring crush seat (31) On the internal tank wall of the grinding case (1) set, the upper end opening of the grinding base (41), in the trend setting that narrows, is corresponded to lower ending opening Fixing sleeve is connected to the grinding block (42) of a cylindrical setting, institute on rotating bar (21) bar wall of grinding base (41) position The upper end side wall for stating grinding block (42) is arranged to bottom side of the wall in the trend that narrows, and is provided on the lateral wall of the grinding block (42) One circle screw thread (43).
5. a kind of feed processing grinding device according to claim 1, it is characterised in that: discharging mechanism (5) packet The slope block (51) of one piece of trapezoidal setting is included, the slope block (51) is fixedly connected on the inner box bottom of grinding case (1), the grinding Case (1) fixing sleeve on the tank wall of bottom position is connected to the discharge nozzle being obliquely arranged (52), the discharge nozzle (52) output end is through the correspondence tank wall for grinding case (1) and extends to grinding case (1) outside.
6. a kind of feed processing grinding device according to claim 1, it is characterised in that: feeding mechanism (6) packet Include a feed pipe (61), the feed pipe (61) is fixedly mounted on the upper surface of grinding case (1), under the feed pipe (61) End opening is connected with grinding case (1), and the upper end of the feed pipe (61) through the upper surface for grinding case (1) and extends to grinding Outside, the feed pipe (61) is located at the one end of grinding case (1) outside and is fixedly connected with a loading hopper (62) case (1).
7. a kind of feed processing grinding device according to claim 1, it is characterised in that: under the grinding case (1) Surface is fixedly connected with four support columns (7), and four support columns (7) are about being in square at the center of grinding case (1) lower surface Battle array shape setting.
8. a kind of feed processing grinding device according to claim 3, it is characterised in that: the ring crush seat (31) Lower surface and the upper surface of grinding base (41) in the setting that is connected, the lower surface of the broken tool apron (32) and broken tool apron (32) in the setting that is connected.
CN201910638364.5A 2019-07-16 2019-07-16 A kind of feed processing grinding device Pending CN110302884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910638364.5A CN110302884A (en) 2019-07-16 2019-07-16 A kind of feed processing grinding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910638364.5A CN110302884A (en) 2019-07-16 2019-07-16 A kind of feed processing grinding device

Publications (1)

Publication Number Publication Date
CN110302884A true CN110302884A (en) 2019-10-08

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Family Applications (1)

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CN201910638364.5A Pending CN110302884A (en) 2019-07-16 2019-07-16 A kind of feed processing grinding device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111841712A (en) * 2020-07-21 2020-10-30 程正宇 Production process of sodium hydroxide for experiment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107930795A (en) * 2017-12-20 2018-04-20 郑州丽福爱生物技术有限公司 A kind of feed crushing grinding device
CN108212312A (en) * 2018-02-12 2018-06-29 郑兴 A kind of livestock-raising cubed feed breaker
CN208642848U (en) * 2018-03-09 2019-03-26 汪培杰 A kind of grinding device with precomminution function
CN208727658U (en) * 2018-04-19 2019-04-12 福建龙威特电子科技发展有限公司 A kind of Novel quartz sand processing unit (plant)
JP2019063724A (en) * 2017-09-29 2019-04-25 株式会社明治 Atomizing device
CN109865567A (en) * 2019-04-09 2019-06-11 众旺达(宁夏)技术咨询有限公司 A kind of pedotheque speed muller
CN209093527U (en) * 2018-09-30 2019-07-12 耿马四方生物科技开发有限责任公司 Grinding device is used in a kind of production and processing of tcm and herbal slice

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019063724A (en) * 2017-09-29 2019-04-25 株式会社明治 Atomizing device
CN107930795A (en) * 2017-12-20 2018-04-20 郑州丽福爱生物技术有限公司 A kind of feed crushing grinding device
CN108212312A (en) * 2018-02-12 2018-06-29 郑兴 A kind of livestock-raising cubed feed breaker
CN208642848U (en) * 2018-03-09 2019-03-26 汪培杰 A kind of grinding device with precomminution function
CN208727658U (en) * 2018-04-19 2019-04-12 福建龙威特电子科技发展有限公司 A kind of Novel quartz sand processing unit (plant)
CN209093527U (en) * 2018-09-30 2019-07-12 耿马四方生物科技开发有限责任公司 Grinding device is used in a kind of production and processing of tcm and herbal slice
CN109865567A (en) * 2019-04-09 2019-06-11 众旺达(宁夏)技术咨询有限公司 A kind of pedotheque speed muller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111841712A (en) * 2020-07-21 2020-10-30 程正宇 Production process of sodium hydroxide for experiment
CN111841712B (en) * 2020-07-21 2021-11-05 牡丹江永兴化工有限公司 Production process of sodium hydroxide for experiment

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Application publication date: 20191008