CN103691343B - Concentric double-shaft gas-liquid stirring device - Google Patents

Concentric double-shaft gas-liquid stirring device Download PDF

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CN103691343B
CN103691343B CN201310620058.1A CN201310620058A CN103691343B CN 103691343 B CN103691343 B CN 103691343B CN 201310620058 A CN201310620058 A CN 201310620058A CN 103691343 B CN103691343 B CN 103691343B
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oar
shaft
gas
frame
interior
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CN103691343A (en
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刘宝庆
刘景亮
金志江
陈明强
张义堃
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses a kind of concentric double-shaft gas-liquid stirring device.Comprise tank diameter, outer shaft, interior shaft, the outer oar of frame, interior oar, gas distributor and inlet duct; Interior shaft is divided into upper and lower two sections, pass through Flange joint, interior shaft epimere empty set stirs in axis hole outside, outer shaft both sides are welded with symmetrical crossbeam, in tank diameter, the outer oar of frame is coaxially housed, interior oar and gas distributor, in tank diameter bottom outside, inlet duct is housed, bottom tank diameter, side has discharging opening.Productive rate of the present invention is high, accessory substance is few; Gas-Liquid Dispersion performance is good; Wide apaptability; Easy to operate, adjustable flexibly.The rotating speed, rotation mode, paddle type combination etc. of inside and outside oar can regulate according to different systems and gas-liquid agitation object etc.; In addition, the dismounting of gas distributor is also easier to.Be particularly useful for the gas-liquid agitation under high sticky and the system that becomes sticky.

Description

Concentric double-shaft gas-liquid stirring device
Technical field
The present invention relates to a kind of agitating device, specifically relate to be applicable to a kind of concentric double-shaft gas-liquid stirring device under the high sticky and system that becomes sticky.
Background technology
Gas-liquid agitation reactor is widely used in the process industrials such as oil, chemical industry, sewage disposal, biofermentation.Existing gas-liquid agitation reactor is mainly single shaft gas-liquid agitation system, there is function singleness in it, be only applicable to the shortcomings such as specific technological process, be uniformly mixed under water or low sticky system, Gas-Liquid Dispersion better performances, but to glue and gas-liquid agitation weak effect under the system that becomes sticky, productive rate is low, power consumption is large at height.And in actual industrial production, the physical property that gas-liquid agitation operates the system related to is mostly comparatively complicated: the higher or material of viscosity has shear shinning etc., as the production of xanthans.Therefore, the gas-liquid stirring device that developmental research is new and effective has very significant realistic meaning.
In recent years, the double-shaft mixers developed, extensively proved that relative single shaft agitator has wider adaptability, the rotating speed of inside and outside oar, rotation mode (in the same way, direction), paddle type combine adjustable flexibly, be particularly useful for the high sticky and system that becomes sticky, there is the advantage that stirring and mixing effect is good, low in energy consumption.But these researchs, application are mainly carried out under single_phase system, the twin shaft gas-liquid stirring device under few people's research, exploitation gas-liquid two-phase system, is especially with the concentric double-shaft gas-liquid stirring device of the outer oar of frame.Because the diameter of outer oar is comparatively large, be generally the 0.9-0.98 of kettle diameter doubly, the spacing of outer oar and still wall is quite little, again owing to will be installed into device of air (being generally gas distributor) in gas-liquid agitation reactor.Therefore, if think design concentric double-shaft gas-liquid stirring device, between outer oar and gas distributor, how to arrange it is the problem that must solve.
Summary of the invention
The object of the invention is by the outer oar of innovative design frame and gas distributor, a kind of concentric double-shaft gas-liquid stirring device be applicable under the high sticky and system that becomes sticky is provided, realizes energy-conservation, the efficient object of gas-liquid agitation operation.
The object of the invention is to realize by the following technical solutions:
The present invention includes tank diameter, outer shaft, interior shaft, the outer oar of frame, interior oar, gas distributor; Interior shaft is divided into upper and lower two sections, pass through Flange joint, interior shaft epimere empty set stirs in axis hole outside, outer shaft both sides are welded with symmetrical crossbeam, in tank diameter, the outer oar of frame is housed, in the outer oar of frame, interior oar and gas distributor is coaxially housed, in tank diameter bottom outside, inlet duct is housed, bottom tank diameter, side has discharging opening.
Middle opening bottom the outer oar of described frame, the outer oar middle opening of frame is together soldered by iron hoop, outer oar two upper surface of frame is fixedly connected with described two crossbeam end faces respectively, the oar footpath of the outer oar of frame is 0.9 ~ 0.98 times of tank diameter internal diameter, and the shaft hypomere being arranged in the outer oar of frame is equipped with the oar of more than 1.
Described gas distributor comprises bottom and has the loop pipe of venthole, horizontal tube and VERTICAL TUBE, and loop pipe inner ring is welded with horizontal tube, and horizontal tube is welded with VERTICAL TUBE, in the middle part of VERTICAL TUBE, be welded with annulus, and the bottom of VERTICAL TUBE has internal thread and external screw thread.
Described inlet duct, from top to bottom successively by double end joint, two-way valve, snap joint and air inlet pipe are formed by connecting, and double end upper end of joint is connected with the internal thread of the VERTICAL TUBE bottom of gas distributor.
Described interior oar is six flat blade disc turbine oar or six straight leaf open turbine oars or six oblique leaf open turbine oars.
The beneficial effect that the present invention has is:
1) productive rate is high, accessory substance is few.Due to the existence of the outer oar of frame, reach identical stirring and mixing effect, this concentric double-shaft gas-liquid stirring device is lower than rotating speed needed for traditional single shaft agitating device, therefore shearing force is relatively little, all less to the failure by shear of raw material and product in gas-liquid agitation reactor, therefore can improve productive rate, reduce the generation of accessory substance.
2) Gas-Liquid Dispersion performance is good.Due to the existence of the outer oar of frame, the relatively traditional single shaft gas-liquid stirring device of near wall region gas holdup is higher, and the overall dispersion effect in gas-liquid reactor is better.
3) wide apaptability.Glue at middle height and all have under the system that becomes sticky and be uniformly mixed preferably and Gas-Liquid Dispersion performance.
4) easy to operate, adjustable flexibly.The rotating speed, rotation mode, paddle type combination etc. of inside and outside oar can regulate according to different systems and gas-liquid agitation object etc.; In addition, the dismounting of gas distributor is also easier to.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is the structure principle chart of inlet duct part in the present invention.
Fig. 3 is the front view of the outer oar of frame in the present invention.
Fig. 4 is the top view of the outer oar of frame in the present invention.
Fig. 5 is the front view of gas distributor in the present invention.
Fig. 6 is the top view of gas distributor in the present invention.
In figure: 1, tank diameter, 2, outer shaft, 3, interior shaft, 4, the outer oar of frame, 5, interior oar, 6, gas distributor, 7, pad, 8, nut, 9, double end joint, 10, two-way valve, 11, snap joint, 12, air inlet pipe, 1.1, sleeve pipe, 1.2, discharge gate, 2.1, crossbeam, 2.2, fixed head, 4.1, iron hoop, 4.2, reinforcement, 4.3, rectangular flat, 6.1, annulus, 6.2, internal thread, 6.3, external screw thread.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the present invention includes tank diameter 1, outer shaft 2, interior shaft 3, the outer oar 4 of frame, interior oar 5, gas distributor 6, pad 7, nut 8, double end joint 9, two-way valve 10, snap joint 11, air inlet pipe 12, interior shaft 3 is divided into upper and lower two sections, by Flange joint, outside (namely, the rotation of shaft 3 does not drive outer shaft 2 to rotate) in shaft 2 hole, interior shaft 3 hypomere is detachable for interior shaft 3 epimere empty set, and it can be made into different length, oar 5 in convenient mounting or dismounting, replacing, outer shaft 2 both sides are welded with symmetrical crossbeam 2.1, , all there is fixed head 2.2 two crossbeam 2.1 ends, convenient being fixed with the outer oar 4 of frame is connected, in tank diameter 1, the outer oar 4 of frame is housed, in the outer oar 4 of frame, interior oar 5 is coaxially housed, gas distributor 6 and pad 7, pad 7 is upwards inserted in gas distributor 6 from gas distributor 6 VERTICAL TUBE lower end, gas distributor 6 from up to down inserts in the sleeve pipe 1.1 of tank diameter 1 end socket center position in tank diameter 1, be pressed in bottom tank diameter 1 by pad 7, in tank diameter 1 bottom outside, nut 8 and inlet duct are housed, loading nut 8 is in order to the mode fixed gas distributor by screw-threaded coupling, bottom tank diameter 1, side has discharging opening 1.2, for discharge.
As Fig. 1, Fig. 3, shown in Fig. 4, outer oar 4 bottom opening of described frame, outer oar 4 bottom opening of frame is together soldered by iron hoop 4.1, so that gas distributor 6 can insert from iron hoop 4.1, outer oar 4 top of frame is welded with reinforcement 4.2, make the outer oar 4 of frame in rotation process, keep stable, the end of the outer oar 4 of the frame be connected with outer shaft 2 is rectangular flat 4.3, the oar footpath of the outer oar 4 of frame is 0.9 ~ 0.98 times of tank diameter 1 internal diameter, shaft 3 hypomere being arranged in the outer oar 4 of frame is equipped with the oar 5 of more than 1, in in Fig. 1, the number of oar 5 is 1, the number of interior oar 5 according to the character such as viscosity of height of materials and material change and change.
As Fig. 1, Fig. 2, Fig. 5, shown in Fig. 6, described gas distributor 6 comprises the loop pipe that bottom has venthole, horizontal tube and VERTICAL TUBE, loop pipe inner ring is welded with horizontal tube, horizontal tube is welded with VERTICAL TUBE, annulus 6.1 is welded with in the middle part of VERTICAL TUBE, the bottom of VERTICAL TUBE has internal thread 6.2 and external screw thread 6.3, over screw thread 6.3 be in order to mounting nuts 8, then by the mode fixed gas distributor 6 of screw-threaded coupling, opening internal thread 6.2 is to connect inlet duct, and the mode be threaded makes the dismounting of inlet duct and gas distributor 6, change more for convenience, fast.The ring footpath of the loop pipe part of gas distributor 6, the diameter of VERTICAL TUBE, and the position of annulus 6.1 in VERTICAL TUBE, the parameters such as the total height of gas distributor 6 and thread depth can change, to adapt to different operating modes and operating condition.
As shown in Figure 1 and Figure 2, described inlet duct, from top to bottom successively by double end joint 9, two-way valve 10, snap joint 11 and air inlet pipe 12 are formed by connecting, double end joint 9 upper end is connected with the internal thread 6.2 of the VERTICAL TUBE bottom of gas distributor 6, and two-way valve 10 can prevent liquid countercurrent in tank diameter 1, and snap joint 11 can fast assembling-disassembling air inlet pipe 12; The structure of this inlet duct, makes the replacing of gas distributor 6 and dismounting also more convenient.
As shown in Figure 1, described interior oar 5 is six flat blade disc turbine oar or six straight leaf open turbine oars or six oblique leaf open turbine oars, and interior oar 5 can be different version, the different numbers of plies, regulates according to actual condition and operating condition.
operation principle of the present invention:
first, installing gas distributor, from top to bottom gas distributor is inserted in the sleeve pipe bottom tank diameter from tank diameter inside, compress bottom tank diameter by pad, gas distributor lower external thread is equipped with nut, compress the sleeve pipe bottom tank diameter, by the mode fixed gas distributor of screw-threaded coupling.Then, be installed into device of air, be screwed into by double end joint in the internal thread of gas distributor bottom, double end joint bottom connects two-way valve, and two-way valve connects snap joint again, and snap joint connects air inlet pipe.The outer oar of following installation, is then equipped with the interior shaft of interior oar, so far device installation.Then start to feed in raw material, add to certain altitude, open motor, regulate the rotating speed of inside and outside oar, after rotating a period of time, open two-way valve and ventilate in tank diameter, gas flows into loop pipe through air inlet pipe, two-way valve, VERTICAL TUBE and horizontal tube, the venthole of gas through loop pipe bottom flows into tank diameter from bottom to top, and its object makes the uniform stream entering tank diameter.Outer oar and interior oar are driven by different motors, control, and can have different rotating speeds and different turning to.After stirring completes, stop ventilation, and close two-way valve, open discharge gate and carry out discharge, and then dismounting interior oar, outer oar and gas distributor etc.

Claims (3)

1. a concentric double-shaft gas-liquid stirring device, is characterized in that: comprise tank diameter (1), outer shaft (2), interior shaft (3), the outer oar (4) of frame, interior oar (5), gas distributor (6); Interior shaft (3) is divided into upper and lower two sections, pass through Flange joint, interior shaft (3) epimere empty set is outside in shaft (2) hole, outer shaft (2) both sides are welded with symmetrical crossbeam, in tank diameter (1), the outer oar (4) of frame is housed, in the outer oar (4) of frame, interior oar (5) and gas distributor (6) is coaxially housed, in tank diameter (1) bottom outside, inlet duct is housed, side, tank diameter (1) bottom has discharging opening (1.2);
Described gas distributor (6) comprises bottom and has the loop pipe of venthole, horizontal tube and VERTICAL TUBE, loop pipe inner ring is welded with horizontal tube, horizontal tube is welded with VERTICAL TUBE, in the middle part of VERTICAL TUBE, be welded with annulus (6.1), the bottom of VERTICAL TUBE has internal thread (6.2) and external screw thread (6.3);
Described inlet duct, from top to bottom successively by double end joint (9), two-way valve (10), snap joint (11) and air inlet pipe (12) are formed by connecting, and double end joint (9) upper end is connected with the internal thread (6.2) of the VERTICAL TUBE bottom of gas distributor (6).
2. a kind of concentric double-shaft gas-liquid stirring device according to claim 1, it is characterized in that: described frame outer oar (4) bottom middle opening, the outer oar middle opening of frame is together soldered by iron hoop (4.1), outer oar (4) two upper surface of frame is fixedly connected with described two crossbeam end faces respectively, the oar footpath of the outer oar (4) of frame is 0.9 ~ 0.98 times of tank diameter (1) internal diameter, and shaft (3) hypomere being arranged in the outer oar (4) of frame is equipped with the oar (5) of more than 1.
3. a kind of concentric double-shaft gas-liquid stirring device according to claim 1, is characterized in that: described interior oar (5) is six flat blade disc turbine oar or six straight leaf open turbine oars or six oblique leaf open turbine oars.
CN201310620058.1A 2013-11-29 2013-11-29 Concentric double-shaft gas-liquid stirring device Active CN103691343B (en)

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