CN222766337U - A polymerization kettle for inverse suspension synthesis of highly absorbent resin - Google Patents

Abstract

The utility model discloses a polymerization kettle for reverse suspension synthesis of super absorbent resin, comprising a polymerization kettle, a fixing frame is provided on the top of the polymerization kettle, a second bearing is installed on the fixing frame, a nitrogen inlet pipe is connected to the top of the second bearing, a stirrer main shaft is connected to the bottom of the second bearing, the stirrer main shaft is installed on the top of the polymerization kettle through the first bearing, the stirrer main shaft is a hollow structure, a plurality of exhaust holes are evenly provided on the stirrer main shaft, and a frame stirring blade and a double-paddle blade are installed at the bottom of the stirrer main shaft. The stirrer of the polymerization kettle is a paddle-type plus frame-type combination, which has a strong shear force and solves the problem of uneven mixing at the bottom. The paddle-type plus frame-type combination constitutes a composite grid-shaped structure, which can not only realize three-dimensional stirring, but also break up the condensate through the grid, avoid the raw materials from generating particulate matter due to uneven stirring, make the reactor stir more evenly during production, and help to improve the reaction rate.

Description

Polymerization kettle for synthesizing super absorbent resin by reversed phase suspension

Technical Field

The utility model relates to the technical field of polymerization kettles, in particular to a polymerization kettle for synthesizing high-hydroscopicity resin in an inverted suspension manner.

Background

When the chemical composite material (the high water absorbent resin) is processed, the reaction kettle is used, and is different from other medicine fields or other related chemical fields, the structure of the reaction kettle is always different from that of the reaction kettle used in other fields to a certain extent, the existing reaction kettle stirrer is provided with an anchor type, a paddle type, a frame type and the like, the stirring rotating speed of the common frame type structure stirrer is low, the suspension cannot be provided with larger shearing force, the paddle type stirrer is provided with stronger shearing force, the materials at the bottom of the reaction kettle can be locally stirred in place, the condition of uneven stirring is caused, the conditions of polymerization blocking and the like at the bottom discharge port are caused, the functions are single, the defects are more, the stirring performance of the existing reaction kettle is poor, the reaction efficiency is low, and the defects of stirring equipment seriously affect the production efficiency and the production quality especially in the production of the reversed-phase suspension synthesis high water absorbent resin.

Disclosure of utility model

The utility model aims at overcoming the defects of the prior art and provides a polymerization kettle for synthesizing super absorbent resin in an inverse suspension manner, which is used for solving the problems of the prior art.

The technical scheme is that the polymerization kettle for synthesizing the super absorbent resin in an inverse suspension mode comprises a polymerization kettle, wherein a fixing frame is arranged at the top of the polymerization kettle, a second bearing is installed on the fixing frame, a nitrogen inlet pipe is connected to the top of the second bearing, a stirrer main shaft is connected to the bottom of the second bearing and is installed on the top of the polymerization kettle through a first bearing, the stirrer main shaft is of a hollow structure, a plurality of exhaust holes are uniformly formed in the stirrer main shaft, frame-type stirring blades and double-paddle blades are installed at the bottom of the stirrer main shaft, and a guide line is arranged on the inner wall of the polymerization kettle.

As a preferable technical scheme of the utility model, the bottom of the polymerization kettle is connected with a blanking pipeline.

As a preferable technical scheme of the utility model, the stirrer main shaft is welded with the inner ring of the first bearing, and the stirrer main shaft is welded with the second gear.

As a preferable technical scheme of the utility model, the second gear is meshed with the first gear, the first gear is welded on a rotating shaft, the rotating shaft is arranged on a reduction gearbox, and a driving motor is arranged at the top of the reduction gearbox.

As a preferable technical scheme of the utility model, the second bearing is a sealing bearing, and the main shaft of the stirrer is in sealing communication with the nitrogen inlet pipe through the sealing bearing.

As a preferable technical scheme of the utility model, the frame type stirring blade and the double-paddle blade are welded on the main shaft of the stirrer.

As a preferred embodiment of the present utility model, the frame-type stirring blade is provided with a multi-layer grid, and the frame-type stirring blade and the double-blade form a composite grid-shaped structure.

Compared with the prior art, the utility model has the beneficial effects that:

The stirrer of the polymerization kettle is a paddle type frame-adding combination, the condition of uneven bottom mixing is solved while stronger shearing force is achieved, the paddle type frame-adding combination forms a composite grid-shaped structure, three-dimensional stirring can be achieved, aggregates can be smashed through grids, particles generated by raw materials due to uneven stirring are avoided, the reaction kettle is more evenly stirred during production, and the reaction rate is improved.

The main shaft of the stirrer is a hollow shaft, a plurality of groups of exhaust holes are designed on the main shaft of the stirrer, and the main effect is to add nitrogen into the hollow main shaft in the early stage of polymerization to remove oxygen, prevent oxygen from blocking free radical reaction, and simultaneously accelerate the stirring of the mixed solution due to the existence of gas.

And a guide line is designed on the wall of the kettle, so that stirring liquid always moves centripetally, and gel particles are prevented from adhering to the interface wall of the reactor at a high rotating speed.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure, 1, a polymerization kettle, 2, a stirrer main shaft, 3, a frame type stirring blade, 4, an exhaust hole, 5, a blanking pipeline, 6, a guide line, 7, a first bearing, 8, a nitrogen inlet pipe, 9, a second bearing, 10, a reduction gearbox, 11, a driving motor, 12, a fixing frame, 13, a first gear, 14, a rotating shaft, 15, a second gear, 16 and a double-paddle blade.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Referring to FIG. 1, the utility model provides a technical scheme that a polymerization kettle for synthesizing super absorbent resin in an inverse suspension manner comprises a polymerization kettle 1, wherein a fixing frame 12 is arranged at the top of the polymerization kettle 1, a second bearing 9 is arranged on the fixing frame 12, a nitrogen inlet pipe 8 is connected to the top of the second bearing 9, nitrogen is input into a main shaft 2 of the stirrer through the nitrogen inlet pipe 8, the nitrogen is discharged through an exhaust hole 4 on the main shaft 2 of the stirrer, the main shaft 2 of the stirrer is connected to the main shaft 2 of the stirrer, the main shaft 2 of the stirrer is arranged on the top of the polymerization kettle 1 through a first bearing 7, the main shaft 2 of the stirrer is of a hollow structure, a plurality of exhaust holes 4 are uniformly arranged on the main shaft 2 of the stirrer, a frame type stirring blade 3 and a double-paddle blade 16 are arranged on the bottom of the main shaft 2 of the stirrer, and a guide line 6 is arranged on the inner wall of the polymerization kettle 1 of the polymerization kettle, so that stirring liquid always moves centripetally, and gel particles are prevented from adhering to the boundary surface wall of the polymerization kettle 1 at high rotation speed.

The bottom of the polymerization kettle 1 is connected with a blanking pipeline 5, and a valve is arranged on the blanking pipeline 5.

The stirrer main shaft 2 is welded with the inner ring of the first bearing 7, and a second gear 15 is welded on the stirrer main shaft 2.

The second gear 15 is meshed with the first gear 13, the first gear 13 is welded on the rotating shaft 14, the rotating shaft 14 is arranged on the reduction gearbox 10, the driving motor 11 is arranged at the top of the reduction gearbox 10, and the stirring main shaft 2 is driven to rotate through gear meshing, so that the frame type stirring blades 3 and the double-paddle blades 16 are rotated.

The second bearing 9 is a sealed bearing, and the stirrer main shaft 2 is in sealed communication with the nitrogen inlet pipe 8 through the sealed bearing.

Both the frame-type stirring blade 3 and the double-bladed blade 16 are welded to the stirrer main shaft 2.

The frame-type stirring blade 3 is provided with a multi-layer grid, and the frame-type stirring blade 3 and the double-paddle blade 16 form a composite grid-shaped structure.

The working principle is that when the polymerization kettle for synthesizing the high-hydroscopicity resin in reverse suspension is used, the driving motor 11 works to drive the gears in the reduction gearbox 10 to rotate, so that the first gear 13 on the rotating shaft 14 is driven to rotate, the first gear 13 on the rotating shaft 14 is utilized to rotate, so that the second gear 15 on the main shaft 2 is driven to rotate around the first bearing 7 and the second bearing 9, the frame-type stirring blade 3 and the double-paddle blade 16 on the main shaft 2 are driven to rotate, the stirring machine is in the form of paddle type frame-adding combination, the condition of uneven bottom mixing is solved at the same time, the main shaft 2 of the stirring machine is a hollow shaft, a plurality of groups of exhaust holes 4 are designed on the main shaft 2 of the stirring machine, the main effect is that nitrogen is added into the hollow main shaft in the earlier stage of polymerization to remove oxygen, free radical reaction is prevented, meanwhile, the existence of gas can accelerate the stirring of a mixed solution, and a guide line is designed on the inner wall of the polymerization kettle 1, so that the stirring solution always moves centripetally. Gel particles are prevented from adhering to the interface wall of the polymerization kettle 1 at high rotation speed, so that continuous industrial production is not facilitated, one end of the stirrer main shaft 2 is respectively connected with one end of the double-blade 16 and one end of the frame type stirring blade 3, the double-blade 16 and the frame type stirring blade 3 on the stirrer main shaft 2 rotate around the central direction of the stirrer main shaft 2, and two side frame arms of the double-blade 16 are in oblique angle crossed opposition.

The frame type stirring blade 3 is provided with a plurality of layers of grids, so that the stirring convection efficiency can be increased, the radial stirring force can be reduced, and the stability of a reaction system can be facilitated. The suspension type dispersion medium can be stirred in all directions, the condition of uneven stirring is avoided, and the rapid dissolution of reactants is promoted, so that a better mixing effect is obtained.

In the use process of the reaction kettle, the double-paddle blades 16 and the frame type stirring blades 3 form a composite grid-shaped structure, so that three-dimensional stirring can be realized, aggregates can be smashed through the grids, particles generated by uneven stirring of raw materials are avoided, the reaction kettle is more uniformly stirred during production, and the reaction rate is improved. The double-paddle blades 16 are in opposite rotation and cross to form a V shape, so that the stirring shaft has a shearing enhancing effect and is stable in operation. All materials are stainless steel 316L, the surface roughness of the interior of the equipment is less than or equal to 0.4um, the materials are prevented from adhering muffled oar, demulsification and explosion of a reaction system are avoided, and the stability of the system is maintained.

The foregoing examples merely illustrate embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims (7)

1. The utility model provides a be used for reverse phase suspension synthetic high water absorbent resin polymeric kettle, includes polymeric kettle (1), its characterized in that the top of polymeric kettle (1) is equipped with mount (12), install second bearing (9) on mount (12), the top of second bearing (9) is connected with nitrogen gas intake pipe (8), the bottom of second bearing (9) is connected with agitator main shaft (2), agitator main shaft (2) are installed on the top of polymeric kettle (1) through first bearing (7), agitator main shaft (2) are hollow structure, evenly be equipped with a plurality of exhaust hole (4) on agitator main shaft (2), frame stirring vane (3) and double-oar blade (16) are installed to the bottom of agitator main shaft (2), be equipped with drain line (6) on the inner wall of polymeric kettle (1).

2. The polymerization kettle for synthesizing super absorbent resin by reverse phase suspension according to claim 1, wherein a discharging pipeline (5) is connected to the bottom of the polymerization kettle (1).

3. The polymerization kettle for synthesizing super absorbent resin in reverse phase suspension according to claim 1, wherein the main shaft (2) of the stirrer is welded with the inner ring of the first bearing (7), and the main shaft (2) of the stirrer is welded with the second gear (15).

4. The polymerization kettle for synthesizing super absorbent resin in reverse phase suspension according to claim 3, wherein the second gear (15) is meshed with the first gear (13), the first gear (13) is welded on a rotating shaft (14), the rotating shaft (14) is mounted on a reduction gearbox (10), and a driving motor (11) is mounted on the top of the reduction gearbox (10).

5. The polymerization kettle for synthesizing the super absorbent resin in reverse phase suspension according to claim 1, wherein the second bearing (9) is a sealed bearing, and the main shaft (2) of the stirrer is in sealed communication with the nitrogen inlet pipe (8) through the sealed bearing.

6. The polymerization kettle for synthesizing super absorbent resin by reverse phase suspension according to claim 1, wherein the frame type stirring blade (3) and the double-paddle blade (16) are welded on the main shaft (2) of the stirrer.

7. The polymerization kettle for synthesizing super absorbent resin by reverse phase suspension according to claim 6, wherein the frame type stirring blade (3) is provided with a multi-layer grid, and the frame type stirring blade (3) and the double-paddle blade (16) form a composite grid-shaped structure.