A kind of esterifying kettle with double-headed shaft
Technical field
The invention belongs to DYE PRODUCTION apparatus field, it is specifically related to a kind of esterifying kettle with double-headed shaft.
Background technology
Esterification is a class organic chemical reactions, is that alcohol follows carboxylic acid or oxygen-containing inorganic acid to generate the reaction of ester and water, is divided into carboxylic acid to follow alcohol reaction and inorganic oxacid to follow reaction two class of alcohol reaction. Carboxylic acid is reversible with the esterification of alcohol, and General reactions is extremely slow, therefore the conventional vitriol oil makes catalyzer. Polycarboxylic acid with alcohol reaction, then can generate multiple ester. Inorganic acid is with the reaction of alcohol, and its speed is generally very fast. Typical esterification has the reaction of ethanol and acetic acid, generates the ethyl acetate with aromatic odour, is the raw material manufacturing dyestuff and medicine.
Esterification is widely used in the fields such as organic synthesis, esterifying kettle is esterification reaction equipment conventional in chemical enterprise, the whipping appts that traditional esterifying kettle mostly comprises cylindrical body and stretches in cylindrical body, whipping appts is driven by the drive unit of outside, and material carries out esterification in cylindrical body.
In recent years, linguistic term for esterifying kettle is more, such as, be heated uneven problem to improve esterifying kettle, application number be 201020528963.6 Chinese invention patent disclose a kind of outer coil pipe esterifying kettle, include esterifying kettle body, esterifying kettle body is with the agitator going deep into its inside, esterifying kettle body outer wall is wrapped with coil pipe, imports conduction material by coil pipe, esterifying kettle still body is heated evenly.
And for example, in order to improve tradition esterifying kettle still body wall thicker than thick problem, application number be 201110433278.4 Chinese invention patent application disclose a kind of cellular jacketed esterification kettle, agent structure comprises inner barrel and chuck, its principal feature is welded with Honeycomb neck on inner barrel outer wall, the welded construction that heating cylinder employing Honeycomb neck welds with chuck, namely on chuck, all it is welded on the outer wall of inner barrel bottom lower end closing in place and Honeycomb neck, according to different processing requirements, the distribution mode of Honeycomb neck square or rhombus and axial and circumferential pitch can be selected, make interior cylinder and chuck wall thickness economy and rationally.
Esterification is the important reaction of class in reactive dyestuffs production process, has material and extremely glues thick feature. In traditional esterifying kettle when carrying out esterification; the dispersion effect of material is not good; material easily lumps and easily sticks on inner wall of kettle and stir shaft; material is formed big block and discharging can be caused not smooth; stick to and stir shaft then easily causes stir shaft rupture; therefore, traditional esterifying kettle often forms big block because of material in production process and wall cling phenomenon causes stir shaft fracture and discharging not smooth and shuts down stopping production.
Summary of the invention
The present invention provides a kind of esterifying kettle with double-headed shaft, and the longer service life of the stir shaft of this esterifying kettle, reduces cost.
With an esterifying kettle for double-headed shaft, comprising horizontally disposed tubular still body, this tubular still body is provided with the stir shaft of lateral direction penetrating, in the two ends of described stir shaft:
First end is extended tubular still body and is linked by shaft coupling and drive-motor, and with the shaft shoulder coordinated with shaft coupling and keyway arrangements on this first end;
2nd end extend tubular still body and with a reserved section, in this reserved section with the identical shaft shoulder on first end and keyway arrangements.
In reaction kettle of the esterification, the reactive force that the position being connected with shaft coupling when stir shaft stirs is subject to is maximum, and the root of position at stir shaft of fracture the most easily occurs after long agitation. In the present invention, the 2nd end at stir shaft is provided with extra reserved section, and be provided with and the identical shaft shoulder on first end and keyway arrangements in this reserved section, like this when fracture occurs first end time, can continue to use after this stir shaft is exchanged direction, make the life-span of stir shaft extend half, reduce cost.
As preferably, the transverse ends of described tubular still body is respectively equipped with bearing chamber, is respectively equipped with the bearing matched with stir shaft in described bearing chamber, passes through Flange joint between each bearing chamber and tubular still body. Adopt this kind of structure, stir shaft can be made to rotate preferably, meanwhile, esterifying kettle can be made again to keep good sealing property.
As preferably, the shaft shoulder and keyway arrangements on described 2nd end extend to corresponding bearing chamber outside. As further preferred, described 2nd end being arranged with shield cap, the shaft shoulder and keyway arrangements on the 2nd end are in shield cap. Adopt this structure, it is possible to reduce the shaft shoulder on the 2nd end and the abrasion before keyway arrangements use.
As preferably, the lower section of described bearing chamber is provided with bearing column. Now, it is possible to increase stability when reactor works, reduce the vibration at bearing place. As further preferred, the top of described bearing column is with the backing plate corresponding to bearing chamber outer wall shape.
As preferably, being provided with at least one horizontally disposed shake material rod in described tubular still body;
Being provided with, around described stir shaft, the agitating vane that some rows are interspersed vertically, described shake material rod is between adjacent two row's agitating vanes.
When material in esterifying kettle reacts, drive unit drives whipping appts to run, stirring material makes material fully mix, even if under the continuously stirring of whipping appts, material still there will be caking phenomenon, also there is the situation that material sticks on whipping appts simultaneously, the shake material rod being arranged in tubular still body is as independent parts, not any with other parts are fixedly connected with, in reaction process, shake material rod can roll in tubular still body along with whipping appts, falls by himself action of gravity, by the material scattering of caking, strengthen the dispersion of material.
As preferably, the free end of described agitating vane presses close to described tubular inner wall of kettle.
As preferably, described agitating vane arranges 3��4 rows, described shake material rod arranges 2��4.
As preferably, described agitating vane arranges 4 rows, described shake material rod arranges 2.
As preferably, the round steel pipe that rod is closed is expected in described shake for tube head.
As preferably, the upper interval of described shake material rod is furnished with increases the weight of ring. By increase the weight of ring can improve shake material rod weight, thus further improve shake material rod knock vibrations effect, improve the dispersion in material reaction process.
As preferably, described agitating vane is provided with near the position of free end and shakes the excellent stop groove coordinated of material. When agitating vane holder shake material rod just started rise time, shake material rod slides into and stops in groove, it is close on agitating vane and can not drop along with the rotation of agitating vane at once, only when agitating vane forwards enough angles to, shake material rod just can drop, and now, difference of altitude is bigger, that can improve shake material rod further knocks vibrations effect, improves the dispersion in material reaction process.
As preferably, described tubular still external body is provided with chuck.
Compared with the existing technology, the useful effect of the present invention is embodied in:
(1) in the present invention, the 2nd end at stir shaft is provided with extra reserved section, and be provided with and the identical shaft shoulder on first end and keyway arrangements in this reserved section, like this when fracture occurs first end time, can continue to use after this stir shaft is exchanged direction, make the life-span of stir shaft extend half, reduce cost.
(2) esterifying kettle of the present invention is set up shake material rod, shake material rod rolls when whipping appts rotates by himself action of gravity in tubular still body, the caking materials being deposited on tubular autoclave body bottom inwall and stir shaft place is broken up, strengthen the dispersion effect of material, avoid material to lump and wall cling phenomenon in reaction process, be conducive to discharging simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 be shown in Fig. 1 along A-A to sectional view;
Fig. 3 is the structural representation of the stir shaft in the esterifying kettle shown in Fig. 1.
In figure, 1: tubular still body; 2: chuck; 3: dog-house; 4: end cap; 5: stir shaft; 6: step-down gear; 7: motor; 8: leg; 9: discharge opening; 10: shake material rod; 11: agitating vane; 12: first end; 13: the two ends; 14: keyway arrangements; 15: stop groove; 16: increase the weight of ring.
Embodiment
As shown in Figure 1 and Figure 2, a kind of esterifying kettle improving material dispersion property, comprises horizontally disposed tubular still body 1, supports leg 8, the whipping appts stretched in tubular still body 1 of tubular still body 1 and is positioned at tubular still body 1 outer for driving the drive unit of whipping appts.
Tubular still body 1 adopts tubular still body conventional in prior art, tubular still body 1 horizontal positioned, and two ends end cap 4 is closed, and the outer wall of tubular still body 1 is provided with chuck 2, and the top of tubular still body 1 arranges a dog-house 3, and the bottom of tubular still body 1 arranges discharge opening 9.
Whipping appts comprises stir shaft 5 and agitating vane 11, stir shaft 5 is located in tubular still body 1 from the center level of end cap 4, for being rotatably assorted between stir shaft 5 and end cap 4, present embodiment connects with bearing, the end of stir shaft 5 is connected with the drive unit being positioned at outside tubular still body 1, in present embodiment, drive unit comprises motor 7 and connects the output shaft of motor 7 and the step-down gear 6 of stir shaft 5.
Fig. 3 is the concrete structure of stir shaft 5, stir shaft 5 lateral direction penetrating tubular still body 1, the two ends of stir shaft 5 are respectively first end 12 and the 2nd end 13, first end 12 is extended tubular still body 1 and is linked by shaft coupling and drive-motor (step-down gear is passed through in centre), and with the shaft shoulder coordinated with shaft coupling and keyway arrangements 14 on this first end 12; 2nd end 13 extend tubular still body 1 and with a reserved section, in this reserved section with the identical shaft shoulder on first end 12 and keyway arrangements 14.
The transverse ends of tubular still body 1 is respectively equipped with bearing chamber, is respectively equipped with and the bearing that stir shaft 5 matches in described bearing chamber, passes through Flange joint between each bearing chamber and tubular still body 1. The shaft shoulder and keyway arrangements 14 on 2nd end 13 extend to corresponding bearing chamber outside. Being arranged with shield cap on described 2nd end 13, the shaft shoulder and keyway arrangements 14 on the 2nd end 13 are in shield cap. The lower section of described bearing chamber is provided with bearing column. The top of bearing column is with the backing plate corresponding to bearing chamber outer wall shape.
Around stir shaft 5 along axial arranged 3��4 row's agitating vanes 11 of stir shaft 5 on stir shaft 5, it is staggered arrangement between arbitrary adjacent two row's agitating vanes 11, in present embodiment, 4 rows are set, one end of all agitating vanes 11 is fixed on stir shaft 5, and the other end is free end, and the free end of all agitating vanes 11 is all near the inwall of tubular still body 1, and the gap that between inwall, an interval is less, prevents phase mutual friction between agitating vane 11 and inwall.
In space between adjacent two row's agitating vanes 11, shake material rod 10 is set, shake material rod 10 is independent parts, not any with other parts are fixedly connected with relation, can in tubular still body 1 free to tumble, and due to the gap between agitating vane 11 and tubular still body 1 inwall very little, shake material rod 10 rolling in the space that adjacent two row's agitating vanes 11 and tubular still body 1 inwall surround, can not alter in the space between another adjacent two row's agitating vanes 11.
As shown in Figure 2, agitating vane 11 arranges 4 rows, it is divided into four relatively independent spaces by the interior portion of whole tubular still body 1, as required, shake material rod 10 all can be set in the space that each is relatively independent, in present embodiment, shake material rod 10 is set to two, is positioned at relative two separate space.
Shake material rod 10 can be the club shaped structure of any form, it is possible to be set to circle, it is also possible to be set to ellipse, and the material making shake material rod 10 can also select unlike material as required, in present embodiment, and �� 89 steel pipe that shake material rod 10 selection tube head is closed.
On shake material rod 10, interval is furnished with and increases the weight of ring 16, can improve the weight of shake material rod 10 by increasing the weight of ring 16, thus improve shake material rod 10 further knock vibrations effect, improve the dispersion in material reaction process. Simultaneously, it is provided with and shakes, at agitating vane, the stop grooves 15 that material rod 10 coordinates near the position of free end, when agitating vane holder shake material rod 10 just started rise time, shake material rod 10 slides into and stops in groove 15, it is close on agitating vane and can not drop along with the rotation of agitating vane at once, only when agitating vane forwards enough angles to, shake material rod 10 just can drop, now, difference of altitude is bigger, that can improve shake material rod 10 further knocks vibrations effect, improves the dispersion in material reaction process
The mode of operation of the present invention is as follows:
Reaction mass is added in tubular still body 1 from dog-house 3, conduction material is imported in chuck 2, open motor 7 and step-down gear 6, drive whipping appts to rotate and carry out being uniformly mixed of material, the power of motor 7 is 30KW, the rotating speed of motor 7 is 960r/min, and the rotating speed of stir shaft 5 is 7.89r/min, and the linear velocity at 500mm place, stir shaft 5 axle center is 41.3cm/s.
Agitating vane 11 rotates, shake material rod 10 is driven to roll in respective space, when shake material rod 10 turns to the lower part in tubular still body 1 with agitating vane 11, shake material rod 10 falls to tubular still body 1 inwall by himself action of gravity, knock the lumpy material being deposited on inwall place, when shaking upper part that material rod 10 turns to tubular still body 1 inside with agitating vane 11, shake material rod 10 falls to stir shaft 5 by himself action of gravity, knock the caking materials being deposited on stir shaft 5, make the lumpy material vibrations dispersion being deposited on stir shaft 5 place, in reaction process, undertaken heating and being incubated by the conduction material in chuck 2, after reaction terminates, by discharge opening 9 discharging.
The present invention knocks vibrations effect due to the shake material rod set up; improve the dispersion in material reaction process; avoiding material to lump and wall cling phenomenon in reaction process, the shutdown that effectively preventing lumps due to material causes stir shaft fracture, be difficult to the problems such as discharging causes stops production.
When the first end 12 of stir shaft 5 occurs to rupture time, can continue to use after this stir shaft is exchanged direction, make the life-span of stir shaft extend half, reduce cost.
The foregoing is only the better implementation example of the present invention, be not limited to the present invention, all within the present invention's spirit and principle, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.