CN109569381A - A kind of genetic engineering liquid medicine agitating device - Google Patents

A kind of genetic engineering liquid medicine agitating device Download PDF

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Publication number
CN109569381A
CN109569381A CN201910030478.1A CN201910030478A CN109569381A CN 109569381 A CN109569381 A CN 109569381A CN 201910030478 A CN201910030478 A CN 201910030478A CN 109569381 A CN109569381 A CN 109569381A
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CN
China
Prior art keywords
stirred tank
fixed
liquid medicine
bevel gear
stirring
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
CN201910030478.1A
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Chinese (zh)
Inventor
李敏
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN201910030478.1A priority Critical patent/CN109569381A/en
Publication of CN109569381A publication Critical patent/CN109569381A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00Mixers with rotating receptacles
    • B01F29/80Mixers with rotating receptacles rotating about a substantially vertical axis
    • B01F29/82Mixers with rotating receptacles rotating about a substantially vertical axis the receptacle comprising a rotary part, e.g. the bottom, and a stationary part, e.g. the wall, with optional use of a stirrer; the receptacle comprising parts moving in opposite directions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00Mixers with rotating receptacles
    • B01F29/80Mixers with rotating receptacles rotating about a substantially vertical axis
    • B01F29/83Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/44Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
    • B01F31/441Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32Driving arrangements
    • B01F35/322Construction of driving shafts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32Driving arrangements
    • B01F35/323Driving arrangements for vertical stirrer shafts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/22Mixing of ingredients for pharmaceutical or medical compositions

Abstract

The invention discloses a kind of genetic engineering liquid medicine agitating devices, it is related to gene engineering technology field, including loading plate, support frame is fixedly installed on loading plate, level board is horizontally fixed on support frame, stirred tank for holding liquid medicine is installed on level board, agitating shaft surface is uniformly fixed with several pairs of stirring blades, the stirring trench bottom is equipped with the rotation axis being articulated on level board vertically, rotation axis is driven by driving mechanism and is rotated, and is fixed with and the unilaterally connected chemical tank of stirred tank on the loading plate;The present invention can realize that incomplete bevel gear alternately engages connection with bevel gear I and bevel gear II by the driving of driving motor, realize that rotation axis drives stirred tank rotation, realize the rotation of stirred tank internal liquid drug, and casing drives stirring motor traverse motion to realize that stirring blade carries out Stirring to the liquid medicine of stirred tank inside different location, greatly improves the stirring and mixing effect between liquid medicament component simultaneously.

Description

A kind of genetic engineering liquid medicine agitating device
Technical field
The present invention relates to gene engineering technology field, specifically a kind of genetic engineering liquid medicine agitating device.
Background technique
Genetic engineering is the complex technology operated on a molecular scale to gene, is by foreign gene by weighing in vitro It is imported in recipient cell after group, so that this gene is replicated, is transcribed in recipient cell, the operation of accurate translation, genetic engineering It is an important branch of bioengineering, it and cell engineering, enzyme engineering, protein engineering and microbial project collectively constitute Bioengineering.
Liquid medicine in genetic engineering needs adequately to be stirred when being prepared, to promote the abundant hair of drug effect It waves, but the range of current agitating device stirring is smaller, needing operator constantly could be adjusted to realize liquid medicine Stirring comprehensively, leads to the increasing of workload, is unfavorable for promoting stirring efficiency, now provides a kind of genetic engineering liquid medicine thus and stir Device is mixed, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide a kind of genetic engineering liquid medicine agitating devices, to solve in above-mentioned background technique The problem of proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of genetic engineering liquid medicine agitating device, including loading plate, are fixedly installed with support frame on loading plate, on support frame It is horizontally fixed with level board, the stirred tank for holding liquid medicine is installed on level board, stirring electricity is equipped with above stirred tank Machine, the output shaft of stirring motor are coaxially fixedly installed with the agitating shaft extended in stirred tank, and agitating shaft surface is uniformly fixed with Several pairs of stirring blades, the stirring trench bottom are equipped with the rotation axis being articulated on level board vertically, and rotation axis passes through driving machine Structure driving rotates, and is fixed with and the unilaterally connected chemical tank of stirred tank on the loading plate.
As an improvement of the present invention: the driving mechanism includes the driving motor being fixed on loading plate, is driven The output shaft of dynamic motor is coaxially fixed with incomplete bevel gear, and bevel gear I and bevel gear II are engaged on incomplete bevel gear, bores Pulley mechanism is sequentially connected between gear I and rotation axis.
As an improvement of the present invention: circumferential direction offers annular groove on the level board, and stirring trench bottom is fixed The guide runner for sliding and being embedded in a ring groove is installed.
As an improvement of the present invention: be coaxially fixedly installed on the bevel gear II be vertically arranged it is driven Axis is fixed with cam I on driven shaft, and abutting on cam I has horizontally disposed casing, and stirring motor is fixed on sleeve bottom, set It is slidably fitted with the guide rod being fixedly connected with support frame in pipe, is equipped with both ends in casing and is separately fixed at answering on guide rod and casing Position spring.
As an improvement of the present invention: compression cylinder is connected between the chemical tank and stirred tank, in compression cylinder It is reciprocating that piston plate is installed, the outlet tube extended to above stirred tank is installed, between chemical tank and compression cylinder on compression cylinder Connection is equipped with inlet tube.
As an improvement of the present invention: check valve II and unidirectional is separately installed on the inlet tube and outlet tube The conducting direction of valve I, check valve I be along outlet tube from compression cylinder to stirred tank, the conducting direction of check valve II be along into Liquid pipe is from chemical tank to compression cylinder.
As an improvement of the present invention: it is arranged in the rotation axis and is fixed with cam II, sliding peace in compression cylinder Equipped with the piston rod being fixedly connected with piston plate, piston rod end is fixed with the abutting plate abutted with cam II, upper cover of piston rod The spring ring abutted on plate and support frame is separately fixed at equipped with both ends.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can realize that incomplete bevel gear alternately engages company with bevel gear I and bevel gear II by the driving of driving motor It connects, realizes that rotation axis drives stirred tank rotation, realize the rotation of stirred tank internal liquid drug, and casing drives stirring electricity simultaneously Machine traverse motion realizes that stirring blade carries out Stirring to the liquid medicine of stirred tank inside different location, greatly promotes Stirring and mixing effect between liquid medicament component.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the connection schematic top plan view of middle sleeve of the present invention and cam I;
Fig. 3 is the schematic top plan view of level board in the present invention.
In figure: 1- loading plate, 2- driving motor, the incomplete bevel gear of 3-, 4- level board, 5- support frame, 6- stirred tank, 7- Driven shaft, 8- cam I, 9- stirring blade, 10- casing, 11- stirring motor, 12- guide rod, 13- agitating shaft, 14- reset spring, 15- outlet tube, 16- guide runner, 17- annular groove, 18- check valve I, 19- chemical tank, 20- inlet tube, 21- check valve II, 22- compression cylinder, 23- piston plate, 24- piston rod, 25- spring ring, 26- abut plate, 27- cam II, 28- pulley mechanism, 29- Bevel gear I, 30- bevel gear II, 31- rotation axis.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment:
Embodiment 1
Fig. 1-3, a kind of genetic engineering liquid medicine agitating device, including loading plate 1 are please referred to, is fixedly installed on loading plate 1 Support frame 5 is horizontally fixed with level board 4 on support frame 5, the stirred tank 6 for holding liquid medicine is equipped on level board 4, Stirring motor 11 is equipped with above stirred tank 6, the output shaft of stirring motor 11, which is coaxially fixedly installed with, extends to stirring in stirred tank 6 Mix axis 13,13 surface of agitating shaft is uniformly fixed with several pairs of stirring blades 9, by the stirring motor 11 of setting to agitating shaft 13 into Row driving, agitating shaft 13 drive stirring blade 9 to be thereon stirred mixing to the liquid medicament component inside stirred tank 6.
It is equipped with the rotation axis 31 being articulated on level board 4 vertically in 6 bottom of stirred tank, rotation axis 31 is driven by driving mechanism Turn is dynamic, is fixed on the loading plate 1 and the unilaterally connected chemical tank 19 of stirred tank 6.Rotation can be driven by driving mechanism Axis 31 rotates, and rotation axis 31 drives stirred tank 6 to rotate, and then realizes the rotation of 6 internal liquid drug ingedient of stirred tank, further Stirring blade 9 is improved to the mixing effect of liquid medicine.
Wherein, driving mechanism includes the driving motor 2 being fixed on loading plate 1, and the output shaft of driving motor 2 is coaxially fixed There is incomplete bevel gear 3, bevel gear I29 and bevel gear II30, bevel gear I29 and rotation axis are engaged on incomplete bevel gear 3 Pulley mechanism 28 is sequentially connected between 31.Driving motor 2 drives incomplete bevel gear 3 to rotate, and incomplete bevel gear 3 drives Bevel gear I29 rotation, bevel gear I29 is driven rotation axis 31 by pulley mechanism 28 and rotates, and then realizes turning for stirred tank 6 It is dynamic.
In order to guarantee the smooth rotation of stirred tank 6, circumferential direction offers annular groove 17 on level board 4, and 6 bottom of stirred tank is solid Dingan County is embedded the guide runner 16 in annular groove 17 equipped with sliding, and during stirred tank 6 rotates, guide runner 16 is along ring The circumferential sliding of shape slot 17 ensure that stablizing for stirred tank 6 rotates.
Embodiment 2
In order to enable the liquid medicament component of 6 different location of stirred tank is adequately stirred, on the basis of embodiment 1, separately Outside, it is coaxially fixedly installed with the driven shaft 7 being vertically arranged on bevel gear II30, is fixed with cam I8 on driven shaft 7, on cam I8 Abutting has horizontally disposed casing 10, and stirring motor 11 is fixed on 10 bottom of casing, is slidably fitted in casing 10 and support frame 5 The guide rod 12 being fixedly connected, the interior both ends that are equipped with of casing 10 are separately fixed at the reset spring 14 on guide rod 12 and casing 10.
By above-mentioned setting, incomplete bevel gear 3 engages bevel gear II30 and driven shaft 7 is driven to rotate together with cam I8, convex Wheel I8 realizes that traverse motion, guide rod 12 play guiding and make by abutting casing 10 under the elastic acting force of reset spring 14 With traverse motion while agitating shaft 13 drives stirring blade 9 to rotate at this time substantially increases liquid medicine in stirred tank 6 The mixing effect of object.
Compression cylinder 22 is connected between chemical tank 19 and stirred tank 6, chemical tank 19 is for containing liquid medicine preparation process Needed for medicated premix, it is reciprocating in compression cylinder 22 that piston plate 23 is installed, be equipped on compression cylinder 22 and extend to stirring The outlet tube 15 of 6 top of slot, is connected between chemical tank 19 and compression cylinder 22 and is equipped with inlet tube 20, inlet tube 20 and outlet tube 15 On be separately installed with check valve II21 and check valve I18, the conducting direction of check valve I18 is along outlet tube 15 from compression cylinder 22 To stirred tank 6, the conducting direction of check valve II21 is along inlet tube 20 from chemical tank 19 to compression cylinder 22.The check valve of setting II21 and check valve I18 ensure that the unidirectional flow of medicated premix, avoid flowing backwards.
It is arranged in rotation axis 31 and is fixed with cam II27, be slidably fitted in compression cylinder 22 and be fixedly connected with piston plate 23 Piston rod 24,24 end of piston rod are fixed with the abutting plate 26 abutted with cam II27, and both ends difference is arranged on piston rod 24 It is fixed on the spring ring 25 abutted on plate 26 and support frame 5.
By above-mentioned setting, the rotation band moving cam II27 of rotation axis 31 is rotated, and cam II27 is by abutting plate 26 Lateral reciprocating sliding is realized under the elastic reaction of spring ring 25, piston rod 24 drives piston plate 23 in compression cylinder 22 at this time Inside reciprocatingly slide, when piston plate 23 is moved to the left, pressure reduces in compression cylinder 22, the medicated premix in chemical tank 19 along Inlet tube 20 enters in compression cylinder 22, and when piston plate 23 moves right, the medicated premix in compression cylinder 22 is compressed And entered in stirred tank 6 along outlet tube 15, realize that intermittence adds medicated premix into stirred tank 6, so that stirred tank 6 Mixed effect between interior drug component is more abundant thorough.
In conclusion the loading plate 1, driving motor 2 and stirred tank 6 etc. in the present apparatus being answered for the direct of prior art means With, and the specific structure of the components such as casing 10, incomplete bevel gear 3, guide rod 12 and compression cylinder 22 and connection relationship are invention Innovative point;The present invention can realize the incomplete alternating of bevel gear 3 and bevel gear I29 and bevel gear by the driving of driving motor 2 II30 engagement connection, realizes that rotation axis 31 drives stirred tank 6 to rotate, realizes the rotation of 6 internal liquid drug of stirred tank, and simultaneously Casing 10 drives 11 traverse motion of stirring motor to realize stirring blade 9 to the liquid medicine of 6 inside different location of stirred tank Stirring is carried out, the stirring and mixing effect between liquid medicament component is greatly improved.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.
It should be strongly noted that although this specification is described in terms of embodiments, but not each embodiment It only contains an independent technical solution, this description of the specification is merely for the sake of clarity, those skilled in the art It should consider the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms art technology The other embodiments that personnel are understood that, the preferred embodiment of the technical program above described embodiment only expresses, Describe more specific and detailed, but it cannot be understood as the limitations to the technical program the scope of the patents.It should be understood that It is that for those of ordinary skill in the art, without departing from the inventive concept of the premise, several changes can also be made Shape, improvement and substitution, these belong to the protection scope of the technical program.Therefore, the protection scope of the technical program patent is answered It is determined by the appended claims.

Claims (7)

1. a kind of genetic engineering liquid medicine agitating device, including loading plate (1), loading plate are fixedly installed with support frame on (1) (5), it is horizontally fixed with level board (4) on support frame (5), the stirred tank for holding liquid medicine is installed on level board (4) (6), which is characterized in that be equipped with stirring motor (11) above the stirred tank (6), the output shaft of stirring motor (11) is coaxially fixed The agitating shaft (13) extended in stirred tank (6) is installed, agitating shaft (13) surface is uniformly fixed with several pairs of stirring blades (9), stirred tank (6) bottom is equipped with the rotation axis (31) being articulated on level board (4) vertically, and rotation axis (31) passes through driving Mechanism driving rotates, and is fixed on the loading plate (1) and stirred tank (6) unilaterally connected chemical tank (19).
2. genetic engineering liquid medicine agitating device according to claim 1, which is characterized in that the driving mechanism includes The driving motor (2) being fixed on loading plate (1), the output shaft of driving motor (2) are coaxially fixed with incomplete bevel gear (3), Be engaged with bevel gear I(29 on incomplete bevel gear (3)) and bevel gear II(30), bevel gear I(29) and rotation axis (31) between It is sequentially connected with pulley mechanism (28).
3. genetic engineering liquid medicine agitating device according to claim 1, which is characterized in that on the level board (4) Circumferential direction offers annular groove (17), and stirred tank (6) bottom is fixedly installed with the guide runner that sliding is embedded in annular groove (17) (16).
4. genetic engineering liquid medicine agitating device according to claim 2, which is characterized in that the bevel gear II(30) On be coaxially fixedly installed with the driven shaft (7) being vertically arranged, driven shaft is fixed with cam I(8 on (7)), cam I(8) on abut Have horizontally disposed casing (10), stirring motor (11) is fixed on casing (10) bottom, is slidably fitted with and props up in casing (10) The guide rod (12) that support (5) is fixedly connected, the interior both ends that are equipped with of casing (10) are separately fixed on guide rod (12) and casing (10) Reset spring (14).
5. genetic engineering liquid medicine agitating device according to claim 1, which is characterized in that the chemical tank (19) and It is connected between stirred tank (6) compression cylinder (22), it is reciprocating in compression cylinder (22) to be equipped with piston plate (23), on compression cylinder (22) The outlet tube (15) extended to above stirred tank (6) is installed, be connected between chemical tank (19) and compression cylinder (22) be equipped with into Liquid pipe (20).
6. genetic engineering liquid medicine agitating device according to claim 5, which is characterized in that the inlet tube (20) and Outlet tube is separately installed with check valve II(21 on (15)) and check valve I(18), check valve I(18) conducting direction be along go out Liquid pipe (15) is along inlet tube (20) from medicament from compression cylinder (22) to the conducting direction of stirred tank (6), check valve II(21) Case (19) arrives compression cylinder (22).
7. genetic engineering liquid medicine agitating device according to claim 5, which is characterized in that on the rotation axis (31) It is arranged and is fixed with cam II(27), compression cylinder (22) is interior to be slidably fitted with the piston rod (24) being fixedly connected with piston plate (23), Piston rod (24) end is fixed with the abutting plate (26) abutted with cam II(27), and it is solid respectively that both ends are arranged on piston rod (24) It is scheduled on the spring ring (25) abutted on plate (26) and support frame (5).
CN201910030478.1A 2019-01-14 2019-01-14 A kind of genetic engineering liquid medicine agitating device Pending CN109569381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910030478.1A CN109569381A (en) 2019-01-14 2019-01-14 A kind of genetic engineering liquid medicine agitating device

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029964A (en) * 2019-06-04 2019-07-19 付江徽 A kind of grug feeding jar of the rod-pumped well with agitating function
CN111346558A (en) * 2020-03-25 2020-06-30 新沂市东方硕华光学材料有限公司 Low refracting index optical coating material production raw materials mixing arrangement
CN111375330A (en) * 2020-04-17 2020-07-07 安徽巢海水泥有限公司 Cement detects mixes experimental apparatus with automatic water that adds
CN112195774A (en) * 2020-10-03 2021-01-08 王玲 Rainwater collecting device for road and bridge
CN113681776A (en) * 2021-10-27 2021-11-23 南通协力方圆矿业设备有限公司 Reciprocating type breaker throws
CN114073911A (en) * 2021-12-07 2022-02-22 宿松恒骏装饰新材料科技有限公司 Raw material mixing and stirring device for producing decorative new materials

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES471041A1 (en) * 1977-06-29 1979-02-16 Ph Bonvillain & Ronceray Sa De Mixer for different products and in particular for foundry sands
CN107930492A (en) * 2017-12-05 2018-04-20 郑州郑先医药科技有限公司 A kind of gas bath shaking table steadily swung
CN108236859A (en) * 2017-12-26 2018-07-03 共同科技开发有限公司 A kind of agitator arm swing type Blendling-device of feedstuffs
CN108273437A (en) * 2018-04-27 2018-07-13 合肥图腾龙机械设计有限公司 A kind of livestock feed processing feedstuff mixed stirring device
CN108772003A (en) * 2018-05-04 2018-11-09 李小婷 A kind of feed mixing machine with double-stirring machine structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES471041A1 (en) * 1977-06-29 1979-02-16 Ph Bonvillain & Ronceray Sa De Mixer for different products and in particular for foundry sands
CN107930492A (en) * 2017-12-05 2018-04-20 郑州郑先医药科技有限公司 A kind of gas bath shaking table steadily swung
CN108236859A (en) * 2017-12-26 2018-07-03 共同科技开发有限公司 A kind of agitator arm swing type Blendling-device of feedstuffs
CN108273437A (en) * 2018-04-27 2018-07-13 合肥图腾龙机械设计有限公司 A kind of livestock feed processing feedstuff mixed stirring device
CN108772003A (en) * 2018-05-04 2018-11-09 李小婷 A kind of feed mixing machine with double-stirring machine structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029964A (en) * 2019-06-04 2019-07-19 付江徽 A kind of grug feeding jar of the rod-pumped well with agitating function
CN110029964B (en) * 2019-06-04 2021-04-09 付江徽 Well of beam-pumping unit is with jar that adds medicine that has stirring function
CN111346558A (en) * 2020-03-25 2020-06-30 新沂市东方硕华光学材料有限公司 Low refracting index optical coating material production raw materials mixing arrangement
CN111375330A (en) * 2020-04-17 2020-07-07 安徽巢海水泥有限公司 Cement detects mixes experimental apparatus with automatic water that adds
CN112195774A (en) * 2020-10-03 2021-01-08 王玲 Rainwater collecting device for road and bridge
CN113681776A (en) * 2021-10-27 2021-11-23 南通协力方圆矿业设备有限公司 Reciprocating type breaker throws
CN113681776B (en) * 2021-10-27 2021-12-21 南通协力方圆矿业设备有限公司 Reciprocating type breaker throws
CN114073911A (en) * 2021-12-07 2022-02-22 宿松恒骏装饰新材料科技有限公司 Raw material mixing and stirring device for producing decorative new materials

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Application publication date: 20190405