CN204502871U - A kind of convection current agitator - Google Patents
A kind of convection current agitator Download PDFInfo
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- CN204502871U CN204502871U CN201520070330.8U CN201520070330U CN204502871U CN 204502871 U CN204502871 U CN 204502871U CN 201520070330 U CN201520070330 U CN 201520070330U CN 204502871 U CN204502871 U CN 204502871U
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Abstract
The utility model discloses a kind of convection current agitator, mainly comprise: power module, driver module, speed control module, engagement module, shaft etc.The utility model adopts a main shaft and several secondary shafts to form interlock by geared assembly, the solution in stir chamber is made to produce convection current, decrease the tangential flowing of fluid in whipping process, can effectively weaken the whirlpool produced in whipping process, increase the chance of fluid well-distributing mixing, thus accelerate the carrying out dissolving or promote reaction.
Description
Technical field
The utility model relates to agitating device, is specifically related to a kind of use for laboratory convection current agitator, belongs to laboratory equipment field.
Background technology
In chemical experiment, to dissolve each other to make two or more or immiscible fluid mixes by technological requirement or promotes the chemical reaction between them, usually by physical agitation, fluid and material are flowed consumingly, to reach accelerate dissolution, prevent sedimentation, to promote the objects such as chemical reaction.Therefore, method of physical agitation is the important method of chemical laboratory for fluid chemical field.
The viscosity of fluid has a great impact mixing effect, needs to select different agitators according to the viscosity size of agitated medium.The kind of agitator comprises paddle, push type, turbine type, anchor formula and helical-ribbon type etc., and various type selectings is for more inconvenient laboratory applications.
The stirring that current laboratory and industrial production adopt mostly is unidirectional shaft, unidirectional shaft due to direction of rotation certain, make the direction of flow stirred be also single direction, can not well mix different materials when certain rotating speed.Carry out in process in stirring, fluid carries out the tangential flowing being unfavorable for dissolving or mixing owing to being subject to inertia effects, and can produce whirlpool, thus decreases the mixed uniformly chance of material in fluid.In heterogeneous reaction system and the larger reaction system of viscosity, this problem is even more serious.
Utility model content
In order to overcome the defect of prior art, the utility model provides a kind of novel agitating device, makes the solution in stir chamber produce convection current, increases axial flow and the Radial Flow of fluid, reduce it tangentially to flow, promote fluid dissolving, Homogeneous phase mixing or promote that reaction is carried out.
The structure of the utility model convection current agitator comprises: power module, driver module, speed control module, engagement module, a main shaft, several secondary shafts.
The parameter of power module is AC220V, 100 ~ 300W.
Driver module comprises motor and decelerator.
Speed control module comprises speed adjusting knob, can control mixing speed scope to be: 0 ~ 1500r/min.
Engagement module is made up of gear, and be connected with the upper end of each shaft: driving gear is connected with the upper end of main shaft, driven gear is connected with the upper end of secondary shaft; Driving gear and driven gear engage each other, thus form engagement module.The main shaft that driver module welds with engagement module and below is connected by shaft coupling.
Driver module, speed control module, engagement module are all enclosed among frame, and frame is enclosed construction, comprises the shaft seal corresponding with each shaft bottom frame.
The length of main shaft is 130 ~ 260mm, and the length of secondary shaft is less than main shaft, with main shaft spatially for arrange by different level.Main shaft and secondary shaft are made up of resistant material, are preferably stainless steel.
The bottom of main shaft and secondary shaft comprises 2 ~ 3 blades respectively, because secondary shaft directly engages with main shaft in whipping process, therefore the direction of rotation of whole secondary shaft is all contrary with the direction of rotation of main shaft, makes the direction of flow in stirred vessel correspondingly form convection current like this.
The blade total length of secondary shaft is less than the blade overall length of main shaft.
Blade is preferably on each shaft and arranges two panels, two panels blade is fixed on bottom shaft by riveted joint axle, blade can upwards rotate freely for axle to rivet axle, is 0 ~ 90 ° with shaft angulation, and the object of this set is convenient cleaning and adjustable stirred volume at any time.
Preferably, the quantity that secondary shaft is arranged is three.
Preferably, the utility model also can arrange a steam vent in frame, and steam vent two ends are communicated with stirred vessel and external environment respectively, arranges one or several air bleeding valves in the position that steam vent is in communication with the outside.Whether object controls stirred vessel to be flexibly in communication with the outside, according to being react whether have gas in the boiling characteristics of institute's stirred fluid or whipping process.
Preferably, speed control module also comprises the LCDs that can show mixing speed.
The beneficial effect that the technical solution of the utility model is brought is:
The utility model is by arranging a main shaft and several secondary shafts, they form interlock by geared assembly, the solution in stir chamber is made to produce convection current, reduce the tangential flowing of fluid in whipping process, and effectively weaken the whirlpool produced in whipping process, increase the chance of fluid well-distributing mixing, thus promote that solid solute dissolves quickly in liquid flux, the material between the plurality of liquid of solid and liquid, different densities can be made when the stirring for heterogeneous reaction to obtain contact area greatly, be more conducive to the carrying out reacted.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the utility model convection current agitator;
Fig. 2 is the sectional view of the utility model convection current agitator along A-A line in Fig. 1;
Fig. 3 is the stereogram engaging module in the utility model convection current agitator;
In Fig. 1, Fig. 2 and Fig. 3: 1, power module; 2, driver module; 3, speed control module; 4, module is engaged; 5, main shaft; 6, secondary shaft; 7, frame; 8, stirred vessel; 21, motor; 22, decelerator; 23, shaft coupling; 31, speed adjusting knob; 32, LCDs; 41, driving gear; 42, the first driven gear; 43, the second driven gear; 44, the 3rd driven gear; 51, blade; 52, axle is riveted; 61, the first secondary shaft; 62, the second secondary shaft; 63, the 3rd secondary shaft; 71, shaft seal; 72, steam vent; 73, air bleeding valve; 81, stir chamber.
Fig. 4 is the solubility curve comparison diagram of PLA;
Wherein, described concentration is PLA concentration in the solution after stirring, and A represents that B represents with convection current agitator stirring of the present utility model with conventional single shaft agitator stirring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described.Should be appreciated that, the following examples just as illustrating, and do not limit the scope of the invention, and the apparent change made according to the utility model of those skilled in the art simultaneously and modification are also contained within the utility model scope.
A kind of convection current agitator, as depicted in figs. 1 and 2, mainly comprises power module 1, driver module 2, speed control module 3, the engagement main shaft of module 4,5, three secondary shafts 6, frame 7, stirred vessels 8.
Next annexation between corresponding accessory and each parts is described in further detail.
The parameter of power module 1 is AC220V, 100 ~ 300W.Driver module 2 is connected with power module by wire, comprises motor 21 and decelerator 22.The speed of driver module 2 is controlled by speed control module 3, and speed control module 3 is arranged on the middle part of frame 7, it LCDs 32 comprising speed adjusting knob 31 and can show mixing speed, and can control mixing speed scope is: 0 ~ 1500r/min.Engagement module 4 part is driving gear 41 and driven gear 42,43,44, driving gear 41 is connected with the upper end of main shaft 5, driven gear 42,43,44 is connected with the upper end of corresponding secondary shaft 6 (the secondary shaft 62 of the first secondary shaft 61, second, the 3rd secondary shaft 63) respectively, driving gear 41 and driven gear 42 engage each other, thus forming engagement module 4, driver module 2 is connected by shaft coupling 23 with engagement module 4.The length of main shaft 5 is 160mm, and the length of the first secondary shaft 61 is 140mm, and the length of the second secondary shaft 62 is 100mm, and the length of the 3rd secondary shaft 63 is 50mm.Main shaft 5 is stainless steel with the material of secondary shaft 6.
Power module 1, driver module 2, speed control module 3, engagement module 4 are all enclosed among frame 7, and frame 7 is enclosed construction, comprises the shaft seal 71 corresponding with main shaft 5 and secondary shaft 6 bottom frame 7.Frame 7 is provided with a steam vent 72, steam vent 72 is communicated with stirred vessel 8 and external environment, and the position that steam vent 72 is in communication with the outside is provided with an air bleeding valve 73.
Main shaft 5 arranges two panels blade 51 respectively with secondary shaft 6, and two panels blade 51 is fixed on bottom shaft by riveted joint axle 52, and blade 51 can upwards rotate freely for axle to rivet axle 52, is 0 ~ 90 ° with shaft angulation.
Embodiment 1:
PLA dissolution experiment
75g PLA (PLA) is added in 300g chloroform, under 20 DEG C of environment, stir under same rotating speed respectively with routine list shaft agitator and convection current agitator of the present utility model, PLA is dissolved, period is every the concentration of 30 minutes test solutions, and record, concrete solubility curve is as shown in Figure 3.
Embodiment 2:
7-amino-cephalosporanic acid (7-ACA) 15g is added in 100mL ethanol, under 20 DEG C of environment, stir under same rotating speed respectively with routine list shaft agitator and convection current agitator of the present utility model, 7-ACA after 30 minutes in conventional single shaft agitator dissolves not yet completely, and convection current agitator then forms the solution of stable homogeneous.
Embodiment 3:
PET (PET) and each 5g of polyphenylene sulfide (PPS) pellet, join 100mLN, in dinethylformamide (DMF), under 50 DEG C of environment, stir under same rotating speed respectively with routine list shaft agitator and convection current agitator of the present utility model, after 40 minutes, in conventional single shaft agitator, the mixture of PET and PPS is not uniformly dispersed, and PET and the PPS stirred in convection current agitator then forms the suspension mixed.
Embodiment 4:
0.1mol (about 7g) acrylamide monomer is joined in 60mL purified water, and adds 0.04g ammonium persulfate, heating water bath, be slowly warming up to 90 DEG C.Stir under same rotating speed respectively with conventional single shaft agitator and convection current agitator of the present utility model respectively, react after 3 hours, carry out precipitating the operations such as dry washing, obtain product polypropylene acid amides, the productive rate reacted under routine list shaft agitator condition is 30% of productive rate under convection current agitator condition of the present utility model.
Embodiment 5:
1.5g aluminium isopropoxide is joined in 100mL absolute ethyl alcohol, heating water bath is to 50 DEG C, stir under same rotating speed respectively with conventional single shaft agitator and convection current agitator of the present utility model respectively, find through detecting contrast after 4 hours, aluminium isopropoxide in conventional single shaft agitator has nearly 50% to dissolve, and the aluminium isopropoxide in convection current agitator of the present utility model all fully dissolves.
Claims (6)
1. a convection current agitator, comprises power module, driver module, speed control module, engagement module, main shaft, secondary shaft, frame, stirred vessel, motor, decelerator, speed adjusting knob, gear, shaft coupling, shaft seal, blade;
The parameter of described power module is AC220V, 100 ~ 300W; Described driver module comprises motor and decelerator; Described speed control module comprises speed adjusting knob, and its controllable mixing speed scope is: 0 ~ 1500r/min; Engagement module is made up of several gears, be connected with the upper end of each shaft, described gear comprises driving gear and driven gear, driving gear is connected with the upper end of main shaft, driven gear is connected with the upper end of secondary shaft, driving gear and driven gear engage each other, thus form engagement module; The main shaft that described driver module welds with engagement module and below is connected by shaft coupling; Described driver module, speed control module, engagement module are all enclosed among frame, and frame is enclosed construction, comprises the shaft seal corresponding with each shaft bottom frame; Described main shaft has one, and secondary shaft has several, and the bottom of main shaft and secondary shaft comprises 2 ~ 3 blades respectively, and the blade total length of secondary shaft is less than the blade overall length of main shaft; The length of main shaft is 130 ~ 260mm, and the length of secondary shaft is less than main shaft, with main shaft spatially for arrange by different level; Described main shaft and secondary shaft are made up of resistant material.
2. convection current agitator according to claim 1, is characterized in that: described main shaft and secondary shaft arrange two panels blade respectively;
Described two panels blade is fixed on bottom described main shaft and secondary shaft by riveted joint axle, and described blade can rotate freely for axle to rivet axle, is 0 ~ 90 ° with shaft angulation scope.
3. convection current agitator according to claim 1, is characterized in that: the material of described main shaft and secondary shaft is stainless steel.
4. convection current agitator according to claim 1, is characterized in that: the quantity of described secondary shaft is three.
5. convection current agitator according to claim 1, is characterized in that: described frame is provided with a steam vent, and described steam vent is communicated with stirred vessel and external environment, and the position that steam vent is in communication with the outside is provided with air bleeding valve; The quantity of air bleeding valve is one or several.
6. convection current agitator according to claim 1, is characterized in that: described speed control module also comprises the LCDs that can show mixing speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520070330.8U CN204502871U (en) | 2015-01-30 | 2015-01-30 | A kind of convection current agitator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520070330.8U CN204502871U (en) | 2015-01-30 | 2015-01-30 | A kind of convection current agitator |
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| CN204502871U true CN204502871U (en) | 2015-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289397A (en) * | 2015-11-19 | 2016-02-03 | 上海化工研究院 | Suspension liquid stirring device |
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2015
- 2015-01-30 CN CN201520070330.8U patent/CN204502871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289397A (en) * | 2015-11-19 | 2016-02-03 | 上海化工研究院 | Suspension liquid stirring device |
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