CN111298739A

CN111298739A - Reaction kettle with accurate temperature control

Info

Publication number: CN111298739A
Application number: CN202010258022.3A
Authority: CN
Inventors: 王光彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-06-19

Abstract

The invention discloses a reaction kettle with accurate temperature control, which comprises a driving motor, a bearing seat, a rotating shaft, a stirring paddle and a kettle body main body, wherein a heating ring is arranged in a main shaft heating cavity, the temperature of materials in the kettle body main body is monitored in real time at multiple points by three temperature measuring elements which are uniformly and equidistantly arranged on the outer side of a heating jacket, the materials in the kettle body main body are heated and insulated from the outer side by the heating jacket arranged on the outer side of the kettle body main body, the main shaft heating cavity is arranged in the rotating shaft arranged in the kettle body main body, the heating ring is arranged in the rotating shaft and filled with heat-conducting liquid, the materials are heated from the interior of the materials by the rotating shaft, and the materials are stirred under the action of stirring blades so that the materials are heated more uniformly, and the phenomenon of nonuniform temperature distribution of the materials is avoided, the precision of the invention for controlling the temperature of the material is improved.

Description

Reaction kettle with accurate temperature control

Technical Field

The invention relates to the technical field of chemical equipment, in particular to a reaction kettle with accurate temperature control.

Background

The reaction kettle is a container with physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized through the structural design and parameter configuration of the container.

The reaction kettle is widely applied to pressure vessels for petroleum, chemical engineering, rubber, pesticides, dyes, medicines and foods, and is used for completing technological processes such as vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and the like, such as a reactor, a reaction kettle, a decomposition kettle, a polymerization kettle and the like; the material is generally carbon manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloy and other composite materials.

In the reaction kettle in the prior art, the temperature distribution of materials in the kettle is not uniform, the temperature of the materials close to the kettle wall is high, the temperature of the materials far away from the kettle wall is low, and the phenomenon is more serious for a kettle body with a smaller major diameter, so that the conversion rate of a polymerization monomer is influenced.

Disclosure of Invention

The invention aims to provide a reaction kettle with accurate temperature control, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a reaction kettle with accurate temperature control comprises a driving motor, a bearing seat, a rotating shaft, a stirring paddle and a kettle body main body, wherein the kettle body main body is a hollow cylindrical barrel, the bottom of the kettle body main body is fixedly connected with a hemispherical head with a straight edge sealing, a kettle body flange is fixedly connected above the kettle body main body, threaded holes matched with bolts are formed in the kettle body flange, a kettle body upper head is arranged above the kettle body main body, the kettle body upper head is integrally hemispherical, a head flange is fixedly connected to the bottom of the kettle body upper head, through holes matched with the bolts are formed in the head flange, the kettle body upper head and the kettle body main body are detachably connected through a fastening assembly, the fastening assembly comprises bolts, nuts and gaskets, the bolts penetrate through the through holes formed in the head flange and are connected with the threaded holes in the head flange through threads, the connection between the kettle body main body and the kettle body upper end cover is realized by screwing a nut, a feed inlet is fixedly connected above the left side of the kettle body upper end cover, a bearing seat is fixedly connected above the kettle body upper end cover, a bearing seat upper flange is fixedly connected above the bearing seat and matched with the output end of a driving motor, the driving motor is detachably connected on the bearing seat upper flange, two deep groove ball bearings are rotatably connected in the bearing seat, the deep groove ball bearings are symmetrically arranged in the bearing seat, the inner ring of the deep groove ball bearings is rotatably connected to a rotating shaft, a cylindrical cavity main shaft heating cavity is arranged in the rotating shaft, a heating ring is arranged in the main shaft heating cavity, a plurality of stirring paddles are arranged outside the rotating shaft, and a heating jacket is arranged on the outer side wall of the kettle body main body, the heating jacket is fixedly connected with the kettle body main body, a cavity is formed between the heating jacket and the kettle body main body, heat conducting liquid is arranged in the cavity, a plurality of temperature measuring piece mounting grooves are formed in the left side of the heating jacket, the temperature measuring piece mounting grooves penetrate through the heating jacket and the kettle body main body and are communicated with the interior of the kettle body main body to the outside, temperature measuring elements are detachably connected in the temperature measuring piece mounting grooves, temperature measuring points of the temperature measuring elements are arranged in the kettle body main body, the temperature measuring piece mounting grooves communicated with the interior of the heating jacket to the outside are arranged on the right side of the heating jacket, jacket temperature measuring pieces are detachably connected in the temperature measuring piece mounting grooves, the temperature measuring points of the jacket temperature measuring pieces are arranged in the heating jacket, a jacket liquid outlet is arranged above the right side of the heating jacket, and the jacket liquid outlet, a jacket liquid inlet is fixedly connected below the right side of the heating jacket.

As a further scheme of the invention: two supports are arranged on the side wall of the heating jacket, and the supports are symmetrically arranged on two sides of the heating jacket and are fixedly connected with the heating jacket.

As a further scheme of the invention: the number of the temperature measuring elements is three, and the temperature measuring elements are uniformly and equidistantly arranged on the left side of the heating jacket.

As a further scheme of the invention: the temperature measuring element and the jacket temperature measuring piece are PT100 temperature sensors with the diameter of 3 mm.

As a further scheme of the invention: and heat-conducting liquid is filled in the spindle heating cavity.

As a further scheme of the invention: the kettle body flange up end is provided with the cooperation lug the terminal surface is provided with down end flange cooperation lug matched with recess seted up the dovetail in the recess, install the sealing washer in the dovetail.

As a further scheme of the invention: stirring rake total three groups and along the even equidistance fixed connection of vertical direction in on the rotation axis, 4 total feed inlets of every group and along circumference equidistance fixed connection in the rotation axis.

Compared with the prior art, the invention has the beneficial effects that:

the temperature of the materials in the kettle body main body is monitored in real time in a multi-point mode through the three temperature measuring elements which are uniformly and equidistantly arranged on the outer side of the heating jacket, the materials in the kettle body main body are heated and insulated from the outer side through the heating jacket arranged on the outer side of the kettle body main body, the main shaft heating cavity is arranged in the rotating shaft arranged in the kettle body main body, the heating ring is arranged in the main shaft heating cavity and is filled with heat conducting liquid, the materials are heated from the interior of the materials through the rotating shaft, and meanwhile the materials are stirred under the action of the stirring blades, so that the materials are heated more uniformly, the phenomenon of non-uniform temperature distribution of the materials is avoided, and the accuracy of the temperature control of the materials is improved.

Drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a reaction kettle with precise temperature control.

FIG. 2 is a cross-sectional view of a temperature controlled precision reactor.

FIG. 3 is an enlarged view of a portion of a temperature controlled precision reactor at A in FIG. 2.

In the figure: 11. a drive motor; 12. a flange on the bearing seat; 13. a bearing seat; 14. sealing an upper end of the kettle body; 15. a fastening assembly; 16. a kettle body flange; 17. a jacket liquid outlet; 18. a support; 19. a jacket liquid inlet; 20. a heating jacket; 21. a seal head flange; 22. a deep groove ball bearing; 23. a rotating shaft; 24. a feed inlet; 25. a spindle heating cavity; 26. heating a ring; 27. a stirring paddle; 28. a temperature measuring piece mounting groove; 29. a temperature measuring element; 30. a kettle body main body; 31. a heat conducting liquid; 32. a jacket temperature measuring part; 33. a dovetail groove; 34. fitting the projection; 35. and (5) sealing rings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. Other embodiments, which can be obtained by those skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the term "center". The orientations or positional relationships indicated by "length," "width," "height," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "side," and the like are based on the orientations or positional relationships shown in fig. 2 and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Example 1

Referring to fig. 1-3, a reaction kettle with precise temperature control comprises a driving motor 11, a bearing seat 13, a rotating shaft (23), a stirring paddle (27) and a kettle body main body (30), wherein the kettle body main body (30) is a hollow cylindrical cylinder, the bottom of the kettle body main body (30) is fixedly connected with a hemispherical head with a straight edge seal, a kettle body flange (16) is fixedly connected above the kettle body main body (30), threaded holes matched with bolts are formed in the kettle body flange (16), a kettle body upper head 14 is arranged above the kettle body main body (30), the kettle body upper head 14 is integrally hemispherical, the bottom of the kettle body upper head 14 is fixedly connected with a head flange (21), through holes matched with the bolts are formed in the head flange (21), and the kettle body upper head 14 and the kettle body main body (30) are detachably connected through a fastening assembly (15), fastening components (15) include bolt, nut and gasket, the bolt pass on head flange (21) set up the through-hole with realize connecting through the screw thread between the screw hole on head flange (21), it is right to realize through screwing up the nut the connection between cauldron body main part (30) and the cauldron body upper head 14, the mode of can dismantling the connection can be convenient for the staff in the production in the future maintain and maintain cauldron body main part (30) inside.

A feed inlet (24) is fixedly connected to the upper left side of the kettle body upper end enclosure 14, feeding operation can be achieved towards the interior of the kettle body main body (30) through the feed inlet (24), feeding operation can be achieved without opening the kettle body upper end enclosure 14, great convenience is brought to work of workers, a bearing seat 13 is fixedly connected to the right upper side of the kettle body upper end enclosure 14, an upper flange 12 of the bearing seat 13 is fixedly connected to the upper side of the bearing seat 13, the upper flange 12 of the bearing seat 13 is matched with the output end of a driving motor 11, the driving motor 11 is detachably connected to the upper flange 12 of the bearing seat 13, two deep groove ball bearings (22) are rotatably connected to the interior of the bearing seat 13, the deep groove ball bearings (22) are symmetrically arranged inside the bearing seat 13, and the inner ring of the deep groove ball bearings (22) is rotatably connected to, the rotating shaft (23) is positioned by two bearings which are symmetrically arranged, the friction force applied to the rotating shaft in the rotating process is reduced, and the mechanical efficiency of the embodiment is improved.

The inner part of the rotating shaft (23) is provided with a cylindrical cavity main shaft heating cavity (25), a heating ring (26) is arranged in the main shaft heating cavity (25), so that the material can be heated from the inner part of the material, the condition that the temperature of the outer side of the material is high and the temperature of the inner side of the material is low due to the heating from the outer side is avoided, a plurality of stirring paddles (27) are arranged on the outer side of the rotating shaft (23), a heating jacket (20) is arranged on the outer side wall of the kettle body main body (30), the heating jacket (20) is fixedly connected with the kettle body main body (30) and forms a cavity with the kettle body main body (30), heat conducting liquid (31) is arranged in the cavity, a plurality of temperature measuring piece mounting grooves (28) are arranged on the left side of the heating jacket (20), the temperature measuring piece mounting grooves (28) run through the heating jacket (20) and the kettle body main body (30) and communicate the, a temperature measuring element (29) is detachably connected in the temperature measuring element mounting groove (28), a temperature measuring point of the temperature measuring element (29) is arranged in the kettle body main body (30), so that the real-time temperature of the material in the kettle body main body (30) can be measured through the temperature measuring element (29), the temperature measuring element mounting groove (28) which is communicated with the inside of the heating jacket (20) to the outside is arranged on the right side of the heating jacket (20), a jacket temperature measuring element (32) is detachably connected in the temperature measuring element mounting groove (28), the temperature measuring point of the jacket temperature measuring element (32) is arranged in the heating jacket (20), so that the temperature of heat conducting liquid (31) in the heating jacket (20) can be measured, a jacket liquid outlet (17) is arranged above the right side of the heating jacket (20), and the jacket liquid outlet (17) is fixedly connected with the heating jacket (20), a jacket liquid inlet (19) is fixedly connected to the lower part of the right side of the heating jacket (20), and the heat-conducting liquid (31) is filled in from the jacket liquid inlet (19) after being heated under the action of an external water pump (not shown in the figure) and is discharged from the jacket liquid outlet (17) to complete circulation.

As a further aspect of this embodiment: in order to improve the heating effect of the rotating shaft (23), the spindle heating cavity (25) is filled with heat-conducting liquid (31).

As a further aspect of this embodiment: stirring rake (27) total three groups and along the even equidistance fixed connection of vertical direction in on rotation axis (23), 4 total feed inlets (24) of every group and along circumference equidistance fixed connection in rotation axis (23).

Example 2

This embodiment is a further limitation and improvement on embodiment 1 based on embodiment 1, and a reaction kettle with precise temperature control includes all the technical features of embodiment 1, and in addition, as a further scheme of this embodiment: in order to support and fix the kettle body main body (30) in the embodiment, two supports (18) are arranged on the side wall of the heating jacket (20), and the supports (18) are symmetrically arranged on two sides of the heating jacket (20) and are fixedly connected with the heating jacket (20).

As a further aspect of this embodiment: in order to improve the accuracy of temperature measurement in the embodiment and measure the material temperature at different positions, the three temperature measurement elements (29) are uniformly and equidistantly arranged on the left side of the heating jacket (20).

As a further aspect of this embodiment: the temperature measuring element (29) and the jacket temperature measuring piece (32) are PT100 temperature sensors with the diameter of 3 mm.

As a further aspect of this embodiment: in order to reduce the cost problem that the machining precision requirement brought the cauldron body flange (16) up end is provided with cooperation lug (34), only needs the roughness of boss upper surface can accomplish effectively sealed in the within range that sealing washer (35) required, has avoided whole cauldron body flange (16) roughness requirement and the cost that brings high problem down the terminal surface is provided with cooperation lug (34) matched with recess under head flange (21) the dovetail (33) have been seted up in the recess, install sealing washer (35) in dovetail (33).

The working principle of the invention is as follows:

when the stirring device works, heated heat-conducting liquid (31) is poured from a jacket liquid inlet (19) under the action of an external water pump (not shown in the figure) and is discharged from a jacket liquid outlet (17) to complete circulation, the heat-conducting liquid (31) flowing in a heating jacket (20) is used for heating materials in the kettle from the outer side of a kettle body main body (30), the heat-conducting liquid (31) arranged in a main shaft heating cavity (25) is heated through a heating ring (26) in a rotating shaft (23), the materials are heated from the inside of the materials through the rotating shaft (23), and a stirring paddle (27) rotates along with the rotation of a stirring shaft under the drive of a driving motor (11) to complete stirring of the materials, so that the temperature distribution of the materials is more uniform, and the aim of accurately controlling the temperature is fulfilled.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A reaction kettle with accurate temperature control comprises a driving motor (11), a bearing seat (13), a rotating shaft (23), a stirring paddle (27) and a kettle body main body (30), and is characterized in that the kettle body main body (30) is a hollow cylindrical barrel, the bottom of the kettle body main body (30) is fixedly connected with a hemispherical head with a straight edge sealing, a kettle body flange (16) is fixedly connected above the kettle body main body (30), threaded holes matched with bolts are formed in the kettle body flange (16), a kettle body upper head (14) is arranged above the kettle body main body (30), the kettle body upper head (14) is integrally hemispherical, the bottom of the kettle body upper head (14) is fixedly connected with a head flange (21), through holes matched with the bolts are formed in the head flange (21), and the kettle body upper head (14) and the kettle body main body (30) are detachably connected through a fastening assembly (15), the fastening assembly (15) comprises a bolt, a nut and a gasket, the bolt penetrates through a through hole formed in the end socket flange (21) to be connected with a threaded hole in the end socket flange (21) through threads, the nut is screwed to realize connection between the kettle body main body (30) and the kettle body upper end socket (14), a feed inlet (24) is fixedly connected to the upper left side of the kettle body upper end socket (14), a bearing seat (13) is fixedly connected to the right upper side of the kettle body upper end socket (14), an upper flange (12) of the bearing seat (13) is fixedly connected to the upper side of the bearing seat (13), the upper flange (12) of the bearing seat (13) is matched with the output end of the driving motor (11), the upper flange (12) of the bearing seat (13) is detachably connected with the driving motor (11), and the inner part of the bearing seat (13) is rotatably connected with two deep groove ball bearings (22), deep groove ball bearing (22) symmetrical arrangement in inside bearing frame (13), the inner circle of deep groove ball bearing (22) rotates and connects in rotation axis (23), the inside of rotation axis (23) is provided with cylindrical cavity main shaft heating chamber (25) install heating circle (26) in main shaft heating chamber (25) the outside of rotation axis (23) has been arranged a plurality of stirring rake (27) arrange heating jacket (20) on the lateral wall of cauldron body main part (30), fixed connection between heating jacket (20) and cauldron body main part (30) just with the cavity that forms between cauldron body main part (30), heat-conducting liquid (31) have been arranged in the cavity the left side of heating jacket (20) is provided with a plurality of temperature measurement piece mounting groove (28), temperature measurement piece mounting groove (28) link up heating jacket (20) and cauldron body main part (30) and communicate the cauldron body main part (30) is inside in the outside air, the temperature measuring device is characterized in that a temperature measuring element (29) is detachably connected to the inside of the temperature measuring element mounting groove (28), temperature measuring points of the temperature measuring element (29) are arranged in the kettle body main body (30), the right side of the heating jacket (20) is provided with a temperature measuring element mounting groove (28) communicated with the inside of the heating jacket (20) from the outside, the temperature measuring element mounting groove (28) is detachably connected with a jacket temperature measuring element (32), the temperature measuring points of the jacket temperature measuring element (32) are arranged in the inside of the heating jacket (20), a jacket liquid outlet (17) is arranged above the right side of the heating jacket (20), the jacket liquid outlet (17) is fixedly connected with the heating jacket (20), and a jacket liquid inlet (19) is fixedly connected below the right side of the heating jacket (20).

2. The reaction kettle with accurate temperature control according to claim 1, wherein two supports (18) are arranged on the side wall of the heating jacket (20), and the supports (18) are symmetrically arranged on two sides of the heating jacket (20) and fixedly connected with the heating jacket (20).

3. Accurate temperature control reaction kettle according to claim 1 or 2, characterized in that the temperature measuring elements (29) are three in number and are uniformly and equidistantly arranged on the left side of the heating jacket (20).

4. The reaction kettle with accurate temperature control according to claim 3, wherein the temperature measuring element (29) and the jacket temperature measuring piece (32) are PT100 temperature sensors with a diameter of 3 mm.

5. The reaction kettle with accurate temperature control according to claim 4, wherein the spindle heating cavity (25) is filled with a heat conducting liquid (31).

6. The reaction kettle with accurate temperature control according to claim 5, wherein the kettle body flange (16) is provided with a matching bump (34) on the upper end surface, the end socket flange (21) is provided with a groove matched with the matching bump (34) on the lower end surface, a dovetail groove (33) is formed in the groove, and a sealing ring (35) is installed in the dovetail groove (33).

7. Accurate reation kettle of accuse temperature according to claim 6, characterized in that, stirring rake (27) are total three groups and along the even equidistance fixed connection in vertical direction on rotation axis (23), and each group has 4 feed inlets (24) and along circumference equidistance fixed connection in rotation axis (23).