CN108311077A - A kind of stirring chemosynthesis reaction device certainly - Google Patents
A kind of stirring chemosynthesis reaction device certainly Download PDFInfo
- Publication number
- CN108311077A CN108311077A CN201810129534.2A CN201810129534A CN108311077A CN 108311077 A CN108311077 A CN 108311077A CN 201810129534 A CN201810129534 A CN 201810129534A CN 108311077 A CN108311077 A CN 108311077A
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- bath
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- oil bath
- water
- control cabinet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00004—Scale aspects
- B01J2219/00011—Laboratory-scale plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00099—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor the reactor being immersed in the heat exchange medium
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a kind of magnetic force oil bath stirring in water bath device is heated from stirring chemosynthesis reaction device, including electric mixer and heat collecting type；Electric mixer includes motor, rotary shaft and agitating shaft fixture, and it includes oil bath water-bath, control cabinet and support column that heat collecting type, which heats magnetic force oil bath stirring in water bath device, and the upper surface of control cabinet is fixedly installed support plate, and support plate is flexibly connected with flask holder；Flask holder includes collet and fixed column, and fixed column is horizontally disposed, and collet is arranged in oil bath water-bath, and the lower end of oil bath water-bath side wall is provided with outlet tube；The upper end of support plate is fixedly installed supporting plate, and motor is fixedly installed on supporting plate, and output shaft and the agitating shaft fixture of motor pass through rotation axis connection.Compared with prior art, the beneficial effects of the invention are as follows can ensure that large-scale and small-sized reaction bulb can use in the case of magnetic agitation；The area occupied to experimental bench can be effectively reduced simultaneously.
Description
Technical field
It is the invention belongs to chemical reactor technical field, more particularly to a kind of from stirring chemosynthesis reaction device.
Background technology
Chemosynthesis reaction device is the common consersion unit of chemical laboratory, and carrying out, low dose of and solvent viscosity is smaller
When chemical reaction, chemically reacted usually using heat collecting type heating magnetic force oil bath stirring in water bath device, as depicted in figs. 1 and 2
Two kinds.The heat collecting type heating magnetic force oil bath stirring in water bath utensil of both has following difference and problem：For small-sized reaction vessel,
Such as 100mL either smaller round-bottomed flask, 25mL or smaller eggplant type reaction bulb etc., add using the heat collecting type of both
When pyromagnetic force oil bath stirring in water bath device is stirred, since bottom of bottle and the heat collecting type heating magnetic force oil bath water-bath of small-sized reaction bulb are stirred
The bottom distance for mixing device farther out, and does not have the effect of stirring.Carrying out, the large dosage of or higher chemical synthesis of solvent viscosity is anti-
At once, for example, a large amount of and larger viscosity polymer, gel building-up process in, it usually needs use for laboratory electric mixer with
Water-bath oil bath pan is used cooperatively, and for use for laboratory electric mixer for stirring, water-bath oil bath pan thus needs two for heating
Kind of laboratory apparatus carries out an experiment, for limited lab space, an experiment it is excessive use laboratory apparatus,
On the one hand it is the time to build and adjust to need experimenter to spend longer, on the other hand also excessive occupancy use space,
It is possible to occupying the experimental site of other experimenters, and influence the experiment progress of other experimenters.
Invention content
It is an object of the present invention to for the above problem existing for existing use for laboratory chemosynthesis reaction device, provide
One kind can be suitable for different size reaction bulb, and occupancy experimental site is small, and is capable of the chemosynthesis reaction device of automatic stirring.
To achieve the goals above, the technical solution that the application uses for：A kind of stirring chemosynthesis reaction device certainly, including
Electric mixer and heat collecting type heat magnetic force oil bath stirring in water bath device；
The electric mixer includes motor, rotary shaft and agitating shaft fixture；
Heat collecting type heating magnetic force oil bath stirring in water bath device include oil bath water-bath, control cabinet, support column, display screen,
Power switch button, temperature adjustment buttons, magnetic stirring speed regulation button are provided with electrically heated rod in the oil bath water-bath
And temperature measuring probe, the upper surface of the control cabinet are fixedly installed oil bath water-bath, the front surface setting of the control cabinet
There are display screen, power switch button, temperature adjustment buttons and magnetic stirring speed regulation button, control is provided in the control cabinet
Device and magnetic stirring apparatus processed, the controller and magnetic stirring apparatus, display screen, power switch button, temperature adjustment buttons
It is electrically connected with magnetic stirring speed regulation button；
The front surface of the control cabinet is additionally provided with electric stirring speed regulation button, the controller also with electric stirring
Speed regulation button is electrically connected, and support plate, the support plate and control are fixedly installed on the left of the upper surface of the control cabinet
The upper surface of case processed is vertical；
The support plate upper surface is fixedly installed horizontal positioned supporting plate, and the upper surface of the supporting plate is provided with electronic
Machine, the output shaft of the motor and one end of rotary shaft connect, and the rotary shaft other end passes through supporting plate and agitating shaft fixture
It is fixedly connected；
The first through hole through support plate thickness is offered in the support plate, the first through hole is from the left side of support plate
Face extends to the right side of support plate, and the first through hole has multiple, and multiple first through hole arrangements are in alignment, described
Straight line is both provided with horizontal positioned flask holder in the upper surface of control cabinet, each first through hole；
The flask holder includes collet and fixed column, and the right end of the fixed column is fixedly installed collet, the fixed column
On be provided with nut, the fixed column is horizontally set in first through hole, and the fixed column also extends through and is opened in oil bath water-bath
The second through-hole in pot pot wall extends in oil bath water-bath, and the lower end of the oil bath water-bath side wall is provided with outlet tube, institute
It states and is provided with valve on outlet tube, the collet is arranged in oil bath water-bath.
Further, the right end of the upper surface of the control cabinet is fixedly installed support column, the upper end of the support column with
The upper surface of supporting plate is fixedly connected.
Further, the quantity of the support column is at least one.
Further, the electric mixer and heat collecting type heating magnetic force oil bath stirring in water bath device connect with extraneous power supply
It connects.
Further, it is provided with rubber sheet gasket in the second through-hole.
Further, the fixed column is the fixed column that can be stretched or the fixed column that can be folded.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) because first through hole 11 is disposed with multiple from the top down, and it is provided with flask in each first through hole 11
Folder 12, flask holder 12 is horizontally disposed, and is extended in oil bath water-bath 4 by the second through-hole 13, can ensure oil bath water in this way
Bath 4 is arranged with flask holder 12 from the top down, can solve the problem of stir when using small-sized reaction bulb.Specifically
Service condition is as follows：
When reaction bulb is smaller, such as the reaction eggplant bottle of 25mL, and when needing with magnetic agitation and heating, first, experimenter
Button 8 is turned on the power switch, adjusts magnetic stirring speed regulation button, and be placed on what reaction bulb was attempted in oil bath water-bath 4,
Adjust distance of the reaction bulb bottom of bottle apart from 4 the bottom of a pan of oil bath water-bath, it is ensured that when reaction bulb is in this position, the magnetic in reaction bulb
Son rotation, then the flask holder 12 of selection reaction bulb present position clamps reaction bulb.
When reaction bulb is bigger, i.e., reaction bulb need not be clamped inside oil bath water-bath 4, the magneton in reaction bulb turns
In the case of dynamic still rotation, experimenter only needs the flask holder by being fixed on support column 6 to clamp reaction bulb.
It ensures that the present invention's can either ensure that large-scale reaction bulb uses from stirring chemosynthesis reaction device in this way, is also ensured small
The reaction bulb of type uses.
(2) in the larger experiment of synthetic chemistry of progress viscosity, experimenter is stirred by electric mixer, because
Motor 1 is arranged on supporting plate 10, thus can effectively reduce the area occupied to experimental bench, it is ensured that in limited experiment sky
In, more experimenters can test.
Description of the drawings
Fig. 1 is a kind of traditional heat collecting type heating magnetic force oil bath stirring in water bath device；
Fig. 2 is another traditional heat collecting type heating magnetic force oil bath stirring in water bath device；
Fig. 3 is that the embodiment of the present invention is a kind of from the structural schematic diagram for stirring chemosynthesis reaction device；
Fig. 4 is that a kind of position between the support plate and flask holder of stirring chemosynthesis reaction device of the embodiment of the present invention is closed
System's figure；
In figure：1, motor；2, rotary shaft；3, agitating shaft fixture；4, oil bath water-bath；5, control cabinet；6, support column；7、
Display screen；8, power switch button；9, support plate；10, class is held in the palm；11, first through hole；12, flask holder；12-1, collet；12-2、
Fixed column；13, the second through-hole；14, outlet tube.
Specific implementation mode
In order to make the present invention technological means, creation characteristic, achieving the goal is easy to understand with effect, below in conjunction with
Attached drawing in the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described.
As Figure 1-Figure 4, specific implementation mode of the invention is achieved using following technical scheme, a kind of to stir certainly
Chemosynthesis reaction device is mixed, including electric mixer and heat collecting type heat magnetic force oil bath stirring in water bath device, electric mixer sum aggregate
Hot type heating magnetic force oil bath stirring in water bath device is connect with extraneous power supply.Electric mixer includes motor 1, rotary shaft 2 and stirs
Mix axle clamp tool 3；
Heat collecting type heating magnetic force oil bath stirring in water bath device include oil bath water-bath 4, control cabinet 5, support column 6, display screen 7,
Power switch button 8, temperature adjustment buttons, magnetic stirring speed regulation button, be provided in oil bath water-bath 4 electrically heated rod and
The upper surface of temperature measuring probe, control cabinet 5 is fixedly installed oil bath water-bath 4, and the front surface of control cabinet 5 is provided with display screen
7, power switch button 8, temperature adjustment buttons and magnetic stirring speed regulation button are provided with controller and magnetic in control cabinet 5
Power agitating device, controller and magnetic stirring apparatus, display screen 7, power switch button 8, temperature adjustment buttons and magnetic agitation
Speed regulation button is electrically connected.When needing to adjust temperature, temperature is set to by pre- constant temperature by temperature adjustment knob first
Degree, predetermined temperature can show on display screen 7, at the same electrically heated rod can in oil bath water-bath 4 water or oil heat, together
When temperature is transferred to by controller by temperature measuring probe in real time, controller is by the reality of water or oil in oil bath water-bath 4
Border temperature is shown in real time on display screen 7, when the temperature of water or oil in oil bath water-bath 4 reaches the temperature of predetermined set
When, electrically heated rod will stop the heating to water or oil in oil bath water-bath 4；When the temperature of water or oil in oil bath water-bath 4
When degree is less than scheduled temperature, electrically heated rod then continues water in oil supply bath water bath 4 or oil is heated.When need adjust magnetic
It when the mixing speed of power agitating device, is adjusted by magnetic stirring speed regulation button, magnetic stirring speed regulation button passes through
Controller by preset mixing speed include on display screen 7, while controller will control magnetic stirring apparatus progress
It is rotated according to the speed of setting.
The front surface of control cabinet 5 is additionally provided with electric stirring speed regulation button, controller also with electric stirring speed tune
Button is saved to be electrically connected.Be stirred using electric mixer and need set mixing speed when because controller also with electricity
Dynamic mixing speed regulation button is electrically connected, and sets mixing speed by electric stirring speed regulation button first；Then start
Electric mixer, controller can control the mixing speed of motor, and maintain in preset mixing speed.Control cabinet 5
Upper surface on the left of be fixedly installed support plate 9, support plate 9 is vertical with the upper surface of control cabinet 5.
9 upper surface of support plate is fixedly installed horizontal positioned supporting plate 10, and the upper surface of supporting plate 10 is provided with motor 1,
The output shaft of motor 1 is connect with one end of rotary shaft 2, and 2 other end of rotary shaft passes through supporting plate 10 to fix company with agitating shaft fixture 3
It connects.In the larger experiment of synthetic chemistry of progress viscosity, experimenter is stirred by electric mixer, because of motor 1
It is arranged on supporting plate 10, thus can effectively reduces the area occupied to experimental bench, it is ensured that in limited lab space, more
More experimenters can test.
The first through hole 11 through support plate thickness is offered in support plate 9, first through hole 11 is from the left side of support plate 9
Extend to the right side of support plate 9, as shown in Fig. 2, first through hole 11 have it is multiple, multiple first through hole 11 be arranged in one it is straight
Line, straight line are both provided with horizontal positioned flask holder 12 in the upper surface of control cabinet 5, each first through hole 11；Flask
Folder 12 includes collet 12-1 and fixed column 12-2, and the right end of fixed column 12-2 is fixedly installed collet 12-1, on fixed column 12-2
It is provided with nut, fixed column 12-2 is horizontally set in first through hole 11, and fixed column 12-2 is passed through and is opened in oil bath water-bath 4
The second through-hole 13 in pot wall extends in oil bath water-bath 4, is provided with rubber sheet gasket in the second through-hole 13, effectively prevents oil
Or the leakage of water.The lower end of 4 side wall of oil bath water-bath is provided with outlet tube 14, and valve is provided on outlet tube 14, when need by
When oil or water in oil bath water-bath 4 are poured out, experimenter only needs to open on the valve on outlet tube 14, compared to biography
The oil bath water-bath 4 of system, the present invention are more prone to replace the liquid in oil bath water-bath 4.Collet 12-1 is arranged in oil bath water-bath
In pot 4, since it is desired that clamping reaction bulb with collet 12-1.
When reaction bulb is smaller, such as the reaction eggplant bottle of 25mL, when needing with magnetic agitation and heating, first, experimenter beats
Switch power supply switch button 8 adjusts magnetic stirring speed regulation button, and is placed on what reaction bulb was attempted in oil bath water-bath 4, adjusts
Save distance of the reaction bulb bottom of bottle apart from 4 the bottom of a pan of oil bath water-bath, it is ensured that when reaction bulb is in this position, the magneton in reaction bulb
Rotation, then the flask holder 12 of selection reaction bulb present position clamps reaction bulb.When reaction bulb is bigger, that is, do not need
Reaction bulb is clamped inside oil bath water-bath 4, in the case that the magneton rotation in reaction bulb still rotates, experimenter only needs
Reaction bulb is clamped by the flask holder being fixed on support column 6.The stirring chemical synthesis certainly of the present invention is ensured in this way
Reactor can either ensure that large-scale reaction bulb uses, and be also ensured that small-sized reaction bulb uses.
As the preferred embodiment of the present invention, the right end of the upper surface of control cabinet 5 is fixedly installed support column 6, support column 6
Upper end be fixedly connected with the upper surface of supporting plate 10.The quantity of support column 6 is at least one.6 one side of support column is to holding in the palm class 10
Have the function of support, it is further to stablize support class 10；On the other hand it is for fixing flask holder, being used for furniture reaction bulb.
As another preferred embodiment of the present invention, fixed column 12-2 is the fixed column that can be stretched or what can be folded consolidate
Fixed column.When that need not use flask holder 12, it is rather loose that experimenter will be fixed on the nut in support plate 9, and by fixed column 12-
2 take out to the left, so that collet 12-1 is close to the madial wall of oil bath water-bath 4, and again consolidated fixed column 12-2 and support plate 9 with nut
It is fixed, while fixed column 12-2 being folded or being shortened, it can further reduce the occupied space of experimental bench.
In conclusion the present invention can either ensure that large-scale reaction bulb uses in the case of magnetic agitation, it can also be true
Small-sized reaction bulb is protected to use in the case of magnetic agitation；The area occupied to experimental bench can be effectively reduced simultaneously, it is ensured that
In limited lab space, more experimenters can test.
Disclosed above is only presently preferred embodiments of the present invention, and still, the embodiment of the present invention is not limited to this, Ren Heben
What the technical staff in field can think variation should all fall into protection scope of the present invention.
Claims (6)
1. a kind of from stirring chemosynthesis reaction device, which is characterized in that heat magnetic force oil bath including electric mixer and heat collecting type
Stirring in water bath device；
The electric mixer includes motor (1), rotary shaft (2) and agitating shaft fixture (3)；
The heat collecting type heating magnetic force oil bath stirring in water bath device includes oil bath water-bath (4), control cabinet (5), support column (6), shows
Display screen (7), power switch button (8), temperature adjustment buttons, magnetic stirring speed regulation button, the oil bath water-bath (4) are interior
It is provided with electrically heated rod and temperature measuring probe, the upper surface of the control cabinet (5) is fixedly installed oil bath water-bath (4), institute
The front surface for stating control cabinet (5) is provided with display screen (7), power switch button (8), temperature adjustment buttons and magnetic stirring speed
Regulation button, is provided with controller and magnetic stirring apparatus in the control cabinet (5), the controller and magnetic stirring apparatus,
Display screen (7), power switch button (8), temperature adjustment buttons and magnetic stirring speed regulation button are electrically connected；
The front surface of the control cabinet (5) is additionally provided with electric stirring speed regulation button, the controller also with electric stirring
Speed regulation button is electrically connected, and support plate (9), the support are fixedly installed on the left of the upper surface of the control cabinet (5)
Plate (9) is vertical with the upper surface of control cabinet (5)；
Support plate (9) upper surface is fixedly installed horizontal positioned supporting plate (10), the upper surface setting of the supporting plate (10)
There are motor (1), the output shaft of the motor (1) to be connect with one end of rotary shaft (2), rotary shaft (2) other end is worn
Supporting plate (10) is crossed to be fixedly connected with agitating shaft fixture (3)；
The first through hole (11) through support plate (9) thickness is offered on the support plate (9), the first through hole (11) has more
A, multiple first through hole (11) arrangements are in alignment, and the straight line is perpendicular to the upper surface of control cabinet (5), Mei Gesuo
It states in first through hole (11) and is both provided with horizontal positioned flask holder (12)；
The flask holder (12) includes collet (12-1) and fixed column (12-2), the right end fixed setting of the fixed column (12-2)
There is collet (12-1), nut is provided on the fixed column (12-2), the fixed column (12-2) is horizontally set on first through hole
(11) in, and the fixed column (12-2) also extends through the second through-hole (13) being opened in oil bath water-bath (4) pot wall and extends to
In oil bath water-bath (4), the lower end of oil bath water-bath (4) side wall is provided with outlet tube (14), on the outlet tube (14)
It is provided with valve, collet (12-1) setting is in oil bath water-bath (4).
2. as described in claim 1 a kind of from stirring chemosynthesis reaction device, which is characterized in that the control cabinet (5) it is upper
The right end on surface is fixedly installed support column (6), and the upper end of the support column (6) is fixedly connected with the upper surface of supporting plate (10).
3. as claimed in claim 2 a kind of from stirring chemosynthesis reaction device, which is characterized in that the number of the support column (6)
Amount is at least one.
4. as described in claim 1 a kind of from stirring chemosynthesis reaction device, which is characterized in that the electric mixer sum aggregate
Hot type heating magnetic force oil bath stirring in water bath device is connect with extraneous power supply.
5. as described in claim 1 a kind of from stirring chemosynthesis reaction device, which is characterized in that setting in the second through-hole (13)
There is rubber sheet gasket.
6. as described in claim 1 a kind of from stirring chemosynthesis reaction device, which is characterized in that the fixed column (12-2) is
The fixed column that can be stretched or the fixed column that can be folded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810129534.2A CN108311077A (en) | 2018-02-08 | 2018-02-08 | A kind of stirring chemosynthesis reaction device certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810129534.2A CN108311077A (en) | 2018-02-08 | 2018-02-08 | A kind of stirring chemosynthesis reaction device certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108311077A true CN108311077A (en) | 2018-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810129534.2A Pending CN108311077A (en) | 2018-02-08 | 2018-02-08 | A kind of stirring chemosynthesis reaction device certainly |
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| CN (1) | CN108311077A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204159281U (en) * | 2014-09-01 | 2015-02-18 | 宿迁远扬生物科技有限公司 | Heat collecting type constant temperature blender with magnetic force |
| CN204816373U (en) * | 2015-07-08 | 2015-12-02 | 陕西科技大学 | Thermal -arrest formula magnetic stirrers with fixing device |
| CN206215085U (en) * | 2016-11-22 | 2017-06-06 | 河海大学 | A kind of rotating multifunctional motor-driven mixer suitable for chemical experiment |
| CN206622043U (en) * | 2016-07-06 | 2017-11-10 | 贵州大学 | A kind of experimental provision with mechanical agitation and rotary hanging plate corrosion function |
| CN206688618U (en) * | 2017-03-24 | 2017-12-01 | 金川集团股份有限公司 | A kind of adjustable clamping device |
-
2018
- 2018-02-08 CN CN201810129534.2A patent/CN108311077A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204159281U (en) * | 2014-09-01 | 2015-02-18 | 宿迁远扬生物科技有限公司 | Heat collecting type constant temperature blender with magnetic force |
| CN204816373U (en) * | 2015-07-08 | 2015-12-02 | 陕西科技大学 | Thermal -arrest formula magnetic stirrers with fixing device |
| CN206622043U (en) * | 2016-07-06 | 2017-11-10 | 贵州大学 | A kind of experimental provision with mechanical agitation and rotary hanging plate corrosion function |
| CN206215085U (en) * | 2016-11-22 | 2017-06-06 | 河海大学 | A kind of rotating multifunctional motor-driven mixer suitable for chemical experiment |
| CN206688618U (en) * | 2017-03-24 | 2017-12-01 | 金川集团股份有限公司 | A kind of adjustable clamping device |
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Application publication date: 20180724 |
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