CN212524075U - High viscosity feed liquid reation kettle and agitating unit - Google Patents
High viscosity feed liquid reation kettle and agitating unit Download PDFInfo
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- CN212524075U CN212524075U CN202020782363.6U CN202020782363U CN212524075U CN 212524075 U CN212524075 U CN 212524075U CN 202020782363 U CN202020782363 U CN 202020782363U CN 212524075 U CN212524075 U CN 212524075U
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Abstract
The utility model provides a high viscosity feed liquid reation kettle and agitating unit relates to the chemical industry equipment field. The high-viscosity material liquid stirring device comprises a stirring shaft, wherein the stirring shaft is sequentially provided with a first stirring paddle, a second stirring paddle and a third stirring paddle from top to bottom; the first stirring paddle comprises a plurality of cross rods and scraping teeth, the cross rods extend outwards by taking the stirring shaft as a circle center, the scraping teeth are fixed on the cross rods, and the scraping teeth are arranged on the cross rods in a comb shape; the second stirring paddle comprises a plurality of stirring blades and reinforcing plates, the stirring blades are flat and long, and the plane where the stirring blades are located and the plane where the central axis of the stirring shaft and the central axis of the stirring blades are located form an included angle of 0-80 degrees; the third stirring rake includes U type stirring leaf and scraper blade, and the scraper blade is fixed in U type agitator bottom. The utility model discloses a stirring apparatus is applied to reation kettle, can guarantee the mixing efficiency and the reaction efficiency of resin polymerization different stage materials, when material viscosity is higher, still can guarantee the normal operating of the mixing effect of material and equipment.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field especially relates to a high viscosity feed liquid reation kettle and agitating unit.
Background
The polymer resin is a synthetic resin, the synthetic raw material source is wide, the production cost is low, and the resin product has excellent mechanical property, heat resistance, insulativity, flame retardance and the like, and is widely applied to daily life of human beings. With the increasing demand of people, the capacity requirement of industrial production of polymer resin is more and more increased.
The reaction kettle is an indispensable device for preparing resin polymerization reaction, the existing reaction kettle usually adopts internal or external heating and is provided with a paddle type stirring blade, and the heating and stirring mode is suitable for feed liquid with small viscosity but cannot be suitable for high-viscosity feed liquid with the temperature of more than 3000cps/25 ℃. When the material viscosity is too big, the agitator rotating resistance is too big, causes the stirring effect not good easily, appears torsion too big and the phenomenon of tripping operation even, and is very big to the equipment harm.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a high-viscosity material liquid stirring apparatus to solve the above problems, which can ensure the mixing efficiency and reaction efficiency of the materials in different stages of the resin polymerization, especially when the viscosity of the material liquid reaches 30000-.
A high-viscosity feed liquid stirring device comprises a stirring shaft, wherein the stirring shaft is sequentially provided with a first stirring paddle, a second stirring paddle and a third stirring paddle from top to bottom; the first stirring paddle comprises a plurality of cross rods and scraping teeth, the cross rods extend outwards by taking the stirring shaft as a circle center, the scraping teeth are fixed on the cross rods, and the scraping teeth are arranged on the cross rods in a comb shape; the second stirring paddle comprises a plurality of stirring blades and reinforcing plates, the stirring blades are flat and long, and the plane where the stirring blades are located and the plane where the central axis of the stirring shaft and the central axis of the stirring blades are located form an included angle of 0-80 degrees; the third stirring rake includes U type stirring leaf and scraper blade, the scraper blade is fixed in U type agitator bottom.
High viscosity here means a viscosity of 30000-200000cps/25 ℃.
Above-mentioned agitating unit is equipped with the stirring rake of three kinds of differences, the tooth of scraping of first stirring rake has broken ring material surface tension, destroy the effect of bubble in the feed liquid, it is more even to make feed liquid heating and stirring, the material at second stirring rake mainly used stirring reation kettle middle part, the U type stirring leaf of third stirring rake bottom has great torsion, the scraper blade can scrape the material with the reation kettle bottom, above three kinds of stirring rake cooperations can be more even with high viscosity material mixing, improve reaction efficiency.
In one embodiment, the length of the scraping teeth is 10-20 cm, and the distance between every two adjacent scraping teeth is 8-16 cm. The size scraping teeth and spacing can break the bubbles more efficiently.
In one embodiment, the distance between the first stirring paddle and the second stirring paddle is 50-80 cm, and the distance between the second stirring paddle and the third stirring paddle is 60-90 cm.
In one embodiment, the reinforcing plate is fixed on the stirring blade along the central axis direction of the stirring blade.
In one embodiment, the reinforcing plate is perpendicular to the stirring blade. The stiffening plate can increase the intensity of stirring leaf on the one hand, avoids material viscosity too big, the resistance too big and warp, on the other hand has the shearing action with stirring leaf equidirectional to the material.
In one embodiment, the two sides of the scraper are provided with a plurality of spurs. The burs can also destroy the surface tension and shear the material.
The utility model discloses an aspect still provides a high viscosity feed liquid reation kettle, including above-mentioned agitating unit, and:
the stirring shaft is arranged in the shell;
the heat exchange device is arranged outside the shell in a surrounding manner;
the power device comprises a variable torque speed reducer and a motor, wherein one end of the variable torque speed reducer is connected with the motor, and the other end of the variable torque speed reducer is connected with the stirring shaft.
This reation kettle adopts the utility model discloses an agitating unit can be more high-efficient, evenly the misce bene, especially when stirring high viscosity material, can reduce equipment failure rate.
In one embodiment, the bottom of the shell is in a circular arc shape, and the bottom of the scraper is matched with the bottom of the shell in shape. The shape of the bottom of the scraper is matched with that of the bottom of the reaction kettle, so that bottom materials can be stirred, and the mixing uniformity of the materials can be improved.
In one embodiment, the heat exchange device comprises a first heat exchange coil and a second heat exchange coil which are separated from each other, a vertical projection of the first heat exchange coil to the stirring shaft covers a vertical projection of the second stirring paddle to the stirring shaft, and a vertical projection of the second heat exchange coil to the stirring shaft covers a vertical projection of the third stirring paddle to the stirring shaft. The first heat exchange coil and the second heat exchange coil respectively heat or cool different parts of the reaction kettle, and heating or cooling media of different types or temperatures can be introduced according to production requirements, so that the temperature in the reaction kettle is easier to control.
In one embodiment, the housing inner surface is provided with a polishing layer. The polishing layer can reduce the adhesion between the materials and the inner wall of the shell, so that the materials are fully and uniformly mixed in the reaction kettle.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an agitating unit is equipped with the stirring rake of three kinds of differences, the tooth of scraping of first stirring rake has the effect of destroying material surface tension, destroying bubble in the feed liquid, it is more even to make feed liquid heating and stirring, the material at second stirring rake mainly used stirring reation kettle middle part, the U type stirring leaf of third stirring rake bottom has great torsion, the scraper blade can scrape the material with the reation kettle bottom, three kinds of stirring rake cooperations above can be more even with high viscosity material mixing, improve reaction efficiency.
The utility model discloses a reaction kettle adopts the utility model discloses an agitating unit can be more high-efficient, evenly the mixing material, when especially stirring high viscosity material, can reduce equipment failure rate.
Drawings
FIG. 1 is a structural view of a stirring apparatus in an embodiment;
FIG. 2 is a view showing a structure of a first stirring blade in the embodiment;
FIG. 3 is a structural view of a second paddle in the embodiment;
FIG. 4 is a structural view of a third paddle in the embodiment;
FIG. 5 is a structural view of a reaction vessel in the example;
fig. 6 is a top structural view of the housing in the embodiment.
In the figure, 100-stirring device; 110-stirring shaft, 120-first stirring paddle; 121-a cross bar; 122-scraping teeth; 130-a second stirring paddle; 131-stirring blades; 132-a stiffener; 140-a third stirring paddle; 141-U type stirring blades; 142-a scraper; 143-stabbing; 150-a collar; 200-a housing; 210-a feeding port; 220-a sampling port; 230-a window; 240-safe blast hole; 250-variable torque reducer; 300-a first heat exchange coil; 400-second heat exchange coil.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
A high viscosity feed liquid reaction kettle is shown in figures 1-6 and comprises a stirring device 100, a shell 200, a heat exchange device and a power device.
The stirring device 100 is composed of a stirring shaft 110, and a first stirring paddle 120, a second stirring paddle 130 and a third stirring paddle 140 which are sequentially arranged on the stirring shaft 110 from top to bottom, and the three stirring paddles are respectively fixed on the stirring shaft 110 through a lantern ring 150. First stirring rake 120 includes two horizontal poles 121, and horizontal pole 121 all welds and scrapes tooth 122 from top to bottom, scrapes tooth 122 and is long and thin cylindrical, and a plurality of tooth 122 of scraping are arranged and are the pectination, and the length of scraping tooth 122 is 15cm, and adjacent two distances of scraping between the tooth 122 are 8cm, scrapes the bubble that tooth 122 can abolish the production. Second stirring rake 130 includes 4 evenly distributed's stirring leaf 131, and stirring leaf 131 is flat cuboid, and stirring leaf 131 plane and (mixing) shaft 110 center pin and stirring leaf 131 center pin place plane are 60 contained angles, for the intensity of reinforcing stirring leaf 131 with improve stirring efficiency, the surface that stirring leaf 131 faces up is equipped with stiffening plate 132, and stiffening plate 132 perpendicular to stirring leaf 131 sets up. The third stirring paddle 140 includes a U-shaped stirring blade 141, two ends of the U-shaped stirring blade 141 are respectively fixed with an arc-shaped scraping plate 142, two side surfaces of the scraping plate 142 are provided with a plurality of spurs 143, the scraping plate 142 can scrape the material at the bottom of the reaction kettle, so as to prevent the high-viscosity material at the bottom from depositing and reacting insufficiently, and the spurs 143 can carry the high-viscosity material, so that the stirring is more sufficient. The distance between the first stirring paddle 120 and the second stirring paddle 130 is 60cm, the distance between the second stirring paddle 130 and the third stirring paddle 140 is 70cm, and the distance refers to the distance between the lantern rings of the stirring paddles.
The power device comprises a variable torque speed reducer 250 and a motor, wherein one end of the variable torque speed reducer 250 is connected with the motor, the other end of the variable torque speed reducer 250 is connected with the stirring shaft 110, and the stirring shaft 110 penetrates through the shell 200 and is fixed in the shell 200. The variable torque reducer 250 can change torque according to production requirements, so that the stirring device 100 is suitable for materials with different viscosities.
The top and the bottom of the shell 200 are arc-shaped, the middle part is hollow cylindrical, and the inner wall is provided with a polishing layer to reduce material adhesion. The top of the housing 200 is provided with a feeding port 210, a sampling port 220, a window 230, a safety explosion port 240, a control valve port required by production, and the like, wherein the sampling port 220 is used for sampling, so that the viscosity and other properties of the material can be conveniently analyzed. The circular arc shaped scraper 142 is designed to fit the circular arc shaped bottom of the housing 200.
The heat exchange device is arranged outside the shell 200 in a surrounding manner, and comprises a first heat exchange coil 300 and a second heat exchange coil 400 which are separated from each other, wherein the vertical projection of the first heat exchange coil 300 to the stirring shaft 110 covers the vertical projection of the second stirring paddle 130 to the stirring shaft 110, and the vertical projection of the second heat exchange coil 400 to the stirring shaft 110 covers the vertical projection of the third stirring paddle 140 to the stirring shaft 110. Different heating or cooling media may be introduced into the first heat exchanging coil 300 and the second heat exchanging coil 400 according to production needs.
Example 2
A preparation method of high-viscosity phenolic resin comprises the steps of adding raw materials such as phenol, refined cashew shell oil and formaldehyde into a reaction kettle in embodiment 1, carrying out polymerization reaction, introducing 10kg of water saturated steam (with the temperature of about 178 ℃) into a first heat exchange coil pipe in the polymerization reaction process, and introducing 250-DEG C heat conduction oil into a second heat exchange coil pipe;
the viscosity of the feed liquid is sampled and measured through a sampling port at regular time, and the following stirring rotating speed control is carried out according to the viscosity:
in the initial stage of the polymerization reaction, namely when the viscosity of the material liquid is 100-;
in the middle stage of the polymerization reaction, namely when the viscosity of the material liquid is 10000-;
in the later stage of the polymerization reaction, namely when the viscosity of the material liquid is 30000-.
Experimental example 1
Comparison of polymerization reaction effects of high-viscosity phenolic resin in different reaction kettles
The same scale of phenolic resin polymerization reactions were carried out in the reaction vessel of example 1, comparative reaction vessel 1 and comparative reaction vessel 2; the difference between the comparative reaction kettle 1 and the embodiment 2 is that the bottom and the middle part of the stirring shaft are provided with the second stirring paddles, and the reaction kettle is not provided with the variable torque speed reducer and cannot change the torque force at any time; the comparative reaction vessel 2 is different from example 2 in that the second stirring paddles are used at the upper and middle portions of the stirring shaft.
Experimental results show that the reaction kettle of the embodiment 2 has no fault in the whole reaction process, the equipment fault frequency is 0 time in the continuous production of 30 batches of phenolic resin, and the obtained product has good quality. In contrast, the comparative reaction kettle 1 is adopted for polymerization reaction, equipment is easy to trip in the production process, the reaction fails during tripping, and the obtained product does not meet the standard and cannot be subjected to large-scale industrial production; the comparative reaction kettle 2 is adopted for polymerization reaction, and the quality of the obtained product is deteriorated.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The high-viscosity material liquid stirring device is characterized by comprising a stirring shaft, wherein the stirring shaft is sequentially provided with a first stirring paddle, a second stirring paddle and a third stirring paddle from top to bottom; the first stirring paddle comprises a plurality of cross rods and scraping teeth, the cross rods extend outwards by taking the stirring shaft as a circle center, the scraping teeth are fixed on the cross rods, and the scraping teeth are arranged on the cross rods in a comb shape; the second stirring paddle comprises a plurality of stirring blades and reinforcing plates, the stirring blades are flat and long, and the plane where the stirring blades are located and the plane where the central axis of the stirring shaft and the central axis of the stirring blades are located form an included angle of 0-80 degrees; the third stirring rake includes U type stirring leaf and scraper blade, the scraper blade is fixed in U type agitator bottom.
2. The stirring device for high-viscosity feed liquid according to claim 1, wherein the length of the scraping teeth is 10-20 cm, and the distance between two adjacent scraping teeth is 8-16 cm.
3. The stirring device for high-viscosity liquid according to claim 1, wherein the distance between the first stirring paddle and the second stirring paddle is 50-80 cm, and the distance between the second stirring paddle and the third stirring paddle is 60-90 cm.
4. The stirring device for high viscosity liquid according to claim 1, wherein the reinforcing plate is fixed to the stirring vanes along the central axis of the stirring vanes.
5. The stirring device for high-viscosity feed liquid according to claim 4, wherein the reinforcing plate is perpendicular to the stirring vanes.
6. A high-viscosity liquid stirring device according to any one of claims 1 to 5, wherein a plurality of spurs are provided on both sides of the scraper.
7. A high-viscosity feed liquid reaction kettle is characterized by comprising the stirring device as claimed in any one of claims 1 to 6, and:
the stirring shaft is arranged in the shell;
the heat exchange device is arranged outside the shell in a surrounding manner;
the power device comprises a variable torque speed reducer and a motor, wherein one end of the variable torque speed reducer is connected with the motor, and the other end of the variable torque speed reducer is connected with the stirring shaft.
8. The high viscosity feed liquid reaction kettle according to claim 7, wherein the bottom of the shell is in the shape of a circular arc, and the bottom of the scraper is matched with the bottom of the shell in shape.
9. The high viscosity feed liquid reaction kettle according to claim 7 or 8, wherein the heat exchange device comprises a first heat exchange coil and a second heat exchange coil which are separated from each other, a vertical projection of the first heat exchange coil to the stirring shaft covers a vertical projection of the second stirring paddle to the stirring shaft, and a vertical projection of the second heat exchange coil to the stirring shaft covers a vertical projection of the third stirring paddle to the stirring shaft.
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| CN202020782363.6U CN212524075U (en) | 2020-05-12 | 2020-05-12 | High viscosity feed liquid reation kettle and agitating unit |
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| CN202020782363.6U CN212524075U (en) | 2020-05-12 | 2020-05-12 | High viscosity feed liquid reation kettle and agitating unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420625A (en) * | 2020-05-12 | 2020-07-17 | 江门市昆益树脂材料科技有限公司 | High viscosity feed liquid reation kettle and agitating unit |
| CN117599730A (en) * | 2024-01-17 | 2024-02-27 | 河北昊泽化工有限公司 | Chemical polymerization reaction kettle |
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2020
- 2020-05-12 CN CN202020782363.6U patent/CN212524075U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420625A (en) * | 2020-05-12 | 2020-07-17 | 江门市昆益树脂材料科技有限公司 | High viscosity feed liquid reation kettle and agitating unit |
| CN117599730A (en) * | 2024-01-17 | 2024-02-27 | 河北昊泽化工有限公司 | Chemical polymerization reaction kettle |
| CN117599730B (en) * | 2024-01-17 | 2024-04-19 | 河北昊泽化工有限公司 | Chemical polymerization reaction kettle |
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