CN114608307A - Resin independent heat exchange device and process - Google Patents
Resin independent heat exchange device and process Download PDFInfo
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- CN114608307A CN114608307A CN202210262082.1A CN202210262082A CN114608307A CN 114608307 A CN114608307 A CN 114608307A CN 202210262082 A CN202210262082 A CN 202210262082A CN 114608307 A CN114608307 A CN 114608307A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/14—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a horizontal or slightly-inclined plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a resin independent heat exchange device and a process, relating to the technical field of heat exchange devices and comprising a main heat supply pipeline, wherein the main heat supply pipeline is connected with a main valve in series and is connected with a heat supply pipe and a direct supply pipeline through a three-way valve; the heat supply pipe is connected with the heat exchanger; the direct supply pipeline is connected with a heat supply pump; the heat supply pump is connected with the resin drying kettle through an air inlet pipe; in the heat exchange, agitator motor drives the fixed casing clockwise rotation, the setting is at the outside outer stirring rake clockwise rotation of fixed casing, and stir the resin, it is rotatory that the setting drives first bevel gear at the inside rotatory shaft section of thick bamboo of fixed casing, under the cooperation of link and second bevel gear, stirring rake and scraper blade anticlockwise rotation in the third bevel gear passes through the transmission shaft drive, thereby can realize the stirring of resin in two kinds of directions of drying kettle, thereby improve the area of contact of resin and heat medium, and the heat treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of heat exchange devices, in particular to a resin independent heat exchange device and a process.
Background
In resin production enterprises, demand for resin is increasing due to the market. The types and the yield of the resin are increased along with the development of related industries, and in the resin production, the temperature control is an important influence factor, the quality of finished products is related, and a set of stable, reliable and energy-saving resin production temperature control process is very important in order to meet the market growth requirements and the high quality of the products.
The traditional heat exchange system adopts a set of cold/heat medium system shared by a plurality of heat sources, and has the following problems:
when a plurality of heat sources need to be heated up simultaneously, because independent power is not provided, if the opening of the heat supply valve is too small, the flowability of a heat exchange medium in the heat sources is insufficient, the temperature of materials in the reaction kettle cannot be really measured, and therefore, the opening of the heat supply valve of a single heat source can be only increased to ensure the flowability of the heat exchange medium in the heat sources, so that excessive heat supply is caused, and the heating process is not accurately controlled;
when the heat source is used for heat preservation, if the kettle is used for endothermic reaction, the problem of overheating for keeping the fluidity of the medium exists; if the reaction is exothermic, the temperature is reduced by switching the refrigerant, but the temperature difference between the refrigerant and the materials in the kettle is large, so that the temperature is difficult to accurately control, and the problem can be solved only by increasing the temperature adjusting range.
When the heat source needs to be cooled, the temperature in the kettle is still very high, when a large amount of low-temperature refrigerants directly enter the heat exchange coil, the temperature difference is very large, so that the welding line of the coil is stressed by the temperature difference to be too large, leakage is easy to occur, and the service life of the heat source is shortened. Meanwhile, when a plurality of heat sources need to be cooled, the temperature of the refrigerant can fluctuate greatly, and the difficulty of temperature control is further caused.
Disclosure of Invention
Technical problem to be solved
The invention aims to overcome the defects of the prior art, adapt to practical requirements and provide a resin independent heat exchange device and a resin independent heat exchange process so as to solve the technical problems.
Technical scheme
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a resin independent heat exchange device comprises a main heat supply pipeline, wherein a main valve is connected to the main heat supply pipeline in series, and the main heat supply pipeline is connected with a heat supply pipe and a direct supply pipeline through a three-way valve; the heat supply pipe is connected with the heat exchanger; the direct supply pipeline is connected with a heat supply pump; the heat supply pump is connected with the resin drying kettle through an air inlet pipe; the air inlet pipe is connected with a stop valve in series, a three-way joint is also connected between the stop valve and the heat supply pump in series, and the three-way joint is connected with an inner circulation pipe; one end of the internal circulation pipe, which is far away from the air inlet pipe, is connected with the heat supply pipe;
one end of the heat exchanger is connected with the resin drying kettle through a heat outlet pipe of the heat exchanger, and the heat outlet pipe of the heat exchanger is connected with an electromagnetic valve in series;
a heat return pipe is arranged on one side of the upper end of the resin drying kettle; the heat return pipe is connected with a second pipeline thermometer in series, and is also connected with a circulating pipe, and the other end of the circulating pipe is communicated with the heat supply pipe; the tail end of the heat return pipe is also provided with a control valve.
As a further technical scheme of the invention, the heat exchanger is fixedly arranged on the mounting frame; a base convenient for mounting the resin drying kettle is arranged on one side of the mounting rack; and the base is also fixedly provided with a PLC control cabinet.
As a further technical scheme of the invention, a heat supply pipe valve and a normally-closed valve are connected in series on the heat supply pipe; the joint of the circulating pipe and the heat supply pipe is positioned between the three-way valve and the heat supply pipe valve;
the joint of the internal circulation pipe and the heat supply pipe is positioned between the heat supply pipe valve and the normally closed valve.
As a further technical scheme of the invention, a first pipeline thermometer and a first direct-current valve are connected in series on the direct supply pipeline.
As a further technical scheme of the invention, the other two interfaces of the heat exchanger are respectively connected with a cold supply pipe and a cold discharge pipe; the cold supply pipe is connected with a third pipeline thermometer and a cold supply valve in series; and the cold discharge pipe is connected with a fourth pipeline thermometer and a normally open valve in series.
As a further technical scheme of the invention, the resin drying kettle comprises a drying kettle, and the top of the drying kettle is provided with a top cover in a matching way; a stirring motor is fixedly arranged on the top cover, and a transmission shaft of the stirring motor penetrates into the drying kettle and is connected with a stirring mechanism in a matching manner;
a filling hole and an exhaust hole are also formed above the top cover; a handle is welded on the outer side of the upper end of the drying kettle;
a discharge hole is formed in the middle of the bottom of the drying kettle, and a heat inlet is formed in one side of the discharge hole and communicated with the inner cavity; the inner cavity is arranged inside the drying kettle.
As a further technical scheme of the invention, the stirring mechanism comprises a fixed shell, and the top of the fixed shell is connected with an output shaft of a stirring motor in a matching way through a coupler; a rotating shaft cylinder is fixedly connected inside the fixed shell, and a first bevel gear is installed at the lower end of the rotating shaft cylinder in a matched manner; the outer part of the rotating shaft cylinder is also movably connected with a connecting frame, and the middle position of the connecting frame is movably connected with a second bevel gear; the second bevel gear is respectively in meshed connection with the first bevel gear and the third bevel gear;
the third bevel gear is internally connected with a transmission shaft in an interference fit manner, the transmission shaft sequentially penetrates through the rotary shaft cylinder, the first bevel gear, the connecting frame and the third bevel gear from top to bottom, and the transmission shaft is rotationally connected with the rotary shaft cylinder, the first bevel gear and the connecting frame.
As a further technical scheme of the invention, a plurality of inner stirring paddles are arranged outside the lower end of the transmission shaft; a plurality of outer stirring paddles are arranged outside the fixed shell; the rotation diameter of the outer stirring paddle is larger than that of the inner stirring paddle;
the bottom of transmission shaft fixed mounting have the scraper blade, the bottom of this scraper blade sets up to the arc form to the laminating is in the inside bottom side of drying kettle.
A heat exchange process adopting a resin independent heat exchange device comprises a heating stage, a heat preservation stage and a cooling stage;
in the temperature rising stage, the main valve, the first direct-current valve, the control valve and the stop valve are in an open state, other valves are in a closed state, at the moment, a heat medium enters a direct supply pipeline through a heat supply main pipeline, the heat medium is conveyed into an inner cavity in the drying kettle through an air inlet pipe under the starting of a heat supply pump to heat the drying kettle, and the resin drying kettle stirs resin particles, so that the drying treatment of the resin particles is realized, the direct heat supply can enable the heat medium to directly act on the resin drying kettle, and the heat exchange efficiency is ensured;
the heat preservation stage has two operation modes, one is endothermic reaction of the resin, and the other is exothermic reaction of the resin; take the endothermic reaction of the resin as an example: before operation, ensuring that a heat medium is sufficient in the heat exchanger, then closing the main valve, keeping the first direct-flow valve, the stop valve, the heat supply pipe valve and the normally-closed valve in an opening state, opening the direct-flow valve in a small amount, supplying the heat medium in the direct supply pipeline to the drying kettle by the power of the heat supply pump, and then entering the heat supply main pipeline again through the heat return pipe and the circulating pipe to realize internal circulation heat release of the heat medium;
taking the exothermic reaction of the resin as an example, before running, the heat exchanger is ensured to be full of the heat medium, then the main valve is closed, and the first direct-flow valve, the internal circulation valve, the heat supply pipe valve, the normally-closed valve and the electromagnetic valve are kept in an opening state, and the cold supply valve and the normally-opened valve are adjusted to be in a small opening state, the other valves are all in a closed state, the cold medium enters the heat exchanger through the cold supply valve, and the heat exchange is carried out with the heat medium, the partial heat of the heat medium is taken away by the cold medium, the heat medium enters the drying kettle through the heat outlet pipe of the heat exchanger, the resin particles are insulated and then enter the heat supply main pipeline again through the heat return pipe and the circulating pipe, under the power of a heat supply pump, heat medium after heat exchange is conveyed into a heat exchanger through an internal circulation pipe, so that the internal circulation of a system is realized, and the heat release reaction of resin is realized;
the temperature reduction stage ensures that the heat exchanger is full of heat medium before operation, then the main valve is closed, and the first direct-flow valve, the internal circulation valve, the heat supply pipe valve, the normally-closed valve and the electromagnetic valve are kept in the opening state, the cold supply valve and the normally-open valve are adjusted to be in the full opening state, the other valves are all in a closed state, the cold medium enters the heat exchanger through the cold supply valve, and the heat exchange is carried out with the heat medium, the cooling medium takes away most of the heat medium, the heat medium after the heat exchange enters the drying kettle through the heat outlet pipe of the heat exchanger, the resin particles are cooled and then enter the heat supply main pipeline again through the heat return pipe and the circulating pipe, the heat medium after heat exchange is conveyed to the heat exchanger through the internal circulation pipe under the power of the heat supply pump, so that the internal circulation of the system is realized, and the temperature reduction treatment of the resin is realized.
(3) Has the advantages that:
A. in the heating stage, the main valve, the first direct-current valve, the control valve and the stop valve are in an open state, and other valves are in a closed state, at the moment, a heat medium enters a direct supply pipeline through a heat supply main pipeline, the heat medium is conveyed into an inner cavity in a drying kettle through an air inlet pipe under the starting of a heat supply pump to heat the drying kettle, and the resin drying kettle stirs resin particles, so that the drying treatment of the resin particles is realized, the direct heat supply can enable the heat medium to directly act on the resin drying kettle, and the heat exchange efficiency is ensured;
B. in the invention, the heat preservation stage has two operation modes, one is endothermic reaction of resin, and the other is exothermic reaction of resin; take the endothermic reaction of the resin as an example: before operation, ensuring that a heat medium is sufficient in the heat exchanger, then closing the main valve, keeping the first direct-flow valve, the stop valve, the heat supply pipe valve and the normally-closed valve in an opening state, opening the direct-flow valve in a small amount, supplying the heat medium in the direct supply pipeline to the drying kettle by the power of the heat supply pump, and then entering the heat supply main pipeline again through the heat return pipe and the circulating pipe to realize internal circulation heat release of the heat medium;
taking the exothermic reaction of the resin as an example, before running, the heat exchanger is ensured to be full of the heat medium, then the main valve is closed, and the first direct-flow valve, the internal circulation valve, the heat supply pipe valve, the normally-closed valve and the electromagnetic valve are kept in an opening state, and the cold supply valve and the normally-opened valve are adjusted to be in a small opening state, the other valves are all in a closed state, the cold medium enters the heat exchanger through the cold supply valve, and the heat exchange is carried out with the heat medium, the partial heat of the heat medium is taken away by the cold medium, the heat medium enters the drying kettle through the heat outlet pipe of the heat exchanger, the resin particles are insulated and then enter the heat supply main pipeline again through the heat return pipe and the circulating pipe, under the power of a heat supply pump, the heat medium after heat exchange is conveyed into a heat exchanger through an internal circulation pipe, so that the internal circulation of the system is realized, and the exothermic reaction of resin is realized;
C. in the invention, in the cooling stage, before operation, the heat exchanger is ensured to be full of heat medium, then the main valve is closed, the first direct valve, the internal circulation valve, the heat supply pipe valve, the normally closed valve and the electromagnetic valve are kept in an open state, the cold supply valve and the normally open valve are adjusted to be in a fully open state, other valves are all in a closed state, cold medium enters the heat exchanger through the cold supply valve and performs heat exchange with the heat medium, the cold medium takes away most of heat of the heat medium, the heat medium after heat exchange enters the drying kettle through the heat outlet pipe of the heat exchanger, resin particles are cooled and then enter the heat supply main pipeline again through the heat return pipe and the circulation pipe, the heat medium after heat exchange is conveyed to the heat exchanger through the internal circulation pipe under the power of the heat supply pump, so as to realize the internal circulation of the system, the cooling treatment of the resin is realized;
D. in the invention, during heat exchange, the stirring motor drives the fixed shell to rotate clockwise, the outer stirring paddle arranged outside the fixed shell rotates clockwise to stir resin, the rotating shaft barrel arranged inside the fixed shell drives the first bevel gear to rotate, and the third bevel gear drives the inner stirring paddle and the scraper to rotate anticlockwise through the transmission shaft under the matching of the connecting frame and the second bevel gear, so that the stirring of the resin in two directions of the drying kettle can be realized, the contact area of the resin and a heat medium is increased, and the heat treatment efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a resin independent heat exchange device according to the present invention;
FIG. 2 is a rear view of FIG. 1 in a resin independent heat exchange apparatus of the present invention;
FIG. 3 is an enlarged partial schematic view of FIG. 1 in a resin independent heat exchange apparatus according to the present invention;
FIG. 4 is a schematic view of a resin drying kettle of the resin independent heat exchange device of the present invention;
FIG. 5 is a schematic view of the internal structure of a drying kettle of the resin independent heat exchange device of the present invention;
FIG. 6 is a sectional view of a resin drying kettle of the independent heat exchange device for resin of the present invention;
FIG. 7 is a schematic structural diagram of a stirring mechanism of the resin independent heat exchange device of the present invention.
The reference numbers are as follows:
1-main heating pipeline, 2-main valve, 3-heating pipeline, 4-three-way valve, 5-direct supply pipeline, 6-first pipeline thermometer, 7-first direct-flow valve, 8-heating pipeline valve, 9-normally-closed valve, 10-heat exchanger, 11-mounting rack, 12-heating pump, 13-resin drying kettle, 14-PLC control cabinet, 15-heat return pipe, 16-second pipeline thermometer, 17-circulating pipe, 18-check valve, 19-cold supply pipe, 20-third pipeline thermometer, 21-cold supply valve, 22-cold discharge pipe, 23-fourth pipeline thermometer, 24-normally-open valve, 25-heat exchanger heat outlet pipe, 26-electromagnetic valve, 27-internal circulating pipe, 28-internal circulating valve, 29-stop valve, 30-air inlet pipe, 31-base, control valve, 131-drying kettle, 132-top cover, 133-filling hole, 134-stirring motor, 135-exhaust hole, 136-handle, 137-stirring mechanism, 138-inner cavity, 139-discharge hole, 130-heat inlet, 1371-fixed shell, 1372-rotary shaft cylinder, 1373-first bevel gear, 1374-connecting frame, 1375-second bevel gear, 1376-third bevel gear, 1377-transmission shaft, 1378-outer stirring paddle, 1379-inner stirring paddle and 1370-scraper.
Detailed Description
The invention will be further illustrated with reference to the following figures 1 to 7 and examples:
a resin independent heat exchange device comprises a heat supply main pipeline 1, wherein a main valve 2 is connected to the heat supply main pipeline 1 in series, and the heat supply main pipeline 1 is connected with a heat supply pipe 3 and a direct supply pipeline 5 through a three-way valve 4; the heating pipe 3 is connected with a heat exchanger 10; the direct supply pipeline 5 is connected with a heat supply pump 12; the heat supply pump 12 is connected with the resin drying kettle 13 through an air inlet pipe 30; the air inlet pipe 30 is connected with a stop valve 29 in series, and a three-way joint is also connected between the stop valve 29 and the heat supply pump 12 in series and is connected with an inner circulating pipe 27; one end of the internal circulation pipe 27 far away from the air inlet pipe 30 is connected with the heat supply pipe 3;
one end of the heat exchanger 10 is connected with the resin drying kettle 13 through a heat exchanger heat outlet pipe 25, and the heat exchanger heat outlet pipe 25 is connected with an electromagnetic valve 26 in series;
a heat return pipe 15 is arranged on one side of the upper end of the resin drying kettle 13; the heat return pipe 15 is connected with a second pipeline thermometer 16 in series, the heat return pipe 15 is also connected with a circulating pipe 17, and the other end of the circulating pipe 17 is communicated with the heat supply pipe 3; the end of the regenerative tube 15 is also provided with a control valve 32.
In this embodiment, the heat exchanger 10 is fixedly mounted on the mounting frame 11; a base 31 convenient for installing the resin drying kettle 13 is arranged on one side of the installation frame 11; the base 31 is also fixedly provided with a PLC control cabinet 14.
In this embodiment, the heat supply pipe 3 is connected in series with a heat supply pipe valve 8 and a normally-closed valve 9; the joint of the circulating pipe 17 and the heat supply pipe 3 is positioned between the three-way valve 4 and the heat supply pipe valve 8;
the connection between the internal circulation pipe 27 and the heating pipe 3 is between the heating pipe valve 8 and the normally closed valve 9.
In this embodiment, the direct supply pipeline 5 is connected in series with a first pipeline thermometer 6 and a first direct-current valve 7.
In this embodiment, the other two interfaces of the heat exchanger 10 are respectively connected with a cold supply pipe 19 and a cold discharge pipe 22; the cold supply pipe 19 is connected with a third pipeline thermometer 20 and a cold supply valve 21 in series; the cold discharge pipe 22 is connected in series with a fourth pipeline thermometer 23 and a normally open valve 24.
In this embodiment, the resin drying kettle 13 includes a drying kettle 131, and a top cover 132 is fittingly installed on the top of the drying kettle 131; a stirring motor 134 is fixedly installed on the top cover 132, and a transmission shaft of the stirring motor 134 penetrates into the drying kettle 131 and is connected with a stirring mechanism 137 in a matching manner;
a filling hole 133 and an exhaust hole 135 are also formed above the top cover 132; a handle 136 is welded on the outer side of the upper end of the drying kettle 131;
a discharge hole 139 is formed in the middle of the bottom of the drying kettle 131, a heat inlet 130 is formed in one side of the discharge hole 139, and the heat inlet 130 is communicated with the inner cavity 138; the inner cavity 138 is arranged inside the drying kettle 131.
In this embodiment, the stirring mechanism 137 includes a fixed housing 1371, and the top of the fixed housing 1371 is connected to the output shaft of the stirring motor 134 through a coupling; a rotary shaft cylinder 1372 is fixedly connected inside the fixed housing 1371, and a first bevel gear 1373 is installed at the lower end of the rotary shaft cylinder 1372 in a matching manner; the outside of the rotating shaft cylinder 1372 is also movably connected with a connecting frame 1374, and the middle position of the connecting frame 1374 is movably connected with a second bevel gear 1375; the second bevel gear 1375 is meshed with the first bevel gear 1373 and the third bevel gear 1376 respectively;
the third bevel gear 1376 is connected with a transmission shaft 1377 in an interference fit manner, the transmission shaft 1377 sequentially penetrates through the rotary shaft cylinder 1372, the first bevel gear 1373, the connecting frame 1374 and the third bevel gear 1376 from top to bottom, wherein the transmission shaft 1377 is rotatably connected with the rotary shaft cylinder 1372, the first bevel gear 1373 and the connecting frame 1374.
In this embodiment, a plurality of inner stirring paddles 1379 are arranged outside the lower end of the transmission shaft 1377; a plurality of outer stirring paddles 1378 are arranged outside the fixed shell 1371; the revolution diameter of the outer stirring paddle 1378 is larger than that of the inner stirring paddle 1379;
the bottom of drive shaft 1377 fixed mounting have scraper 1370, the bottom of this scraper 1370 sets up to the arc form to the laminating is at the inside bottom side of drying kettle 131.
A heat exchange process adopting a resin independent heat exchange device comprises a heating stage, a heat preservation stage and a cooling stage;
in the temperature rising stage, the main valve 2, the first direct-current valve 7, the control valve 32 and the stop valve 29 are in an open state, and other valves are in a closed state, at the moment, a heat medium enters the direct supply pipeline 5 through the main heat supply pipeline 1, the heat medium is conveyed into an inner cavity 138 in the drying kettle 131 through the air inlet pipe 30 under the starting of the heat supply pump 12 to heat the drying kettle 131, and the resin drying kettle 13 stirs resin particles, so that the drying treatment of the resin particles is realized, the direct heat supply can enable the heat medium to directly act on the resin drying kettle 13, and the heat exchange efficiency is ensured;
the heat preservation stage has two operation modes, one is endothermic reaction of the resin, and the other is exothermic reaction of the resin; take the endothermic reaction of the resin as an example: before operation, ensuring that the heat medium is sufficient in the heat exchanger 10, then closing the main valve 2, keeping the first direct-flow valve 7, the stop valve 29, the heat supply pipe valve 8 and the normally-closed valve 9 in an opening state, opening the direct-flow valve 7 in a small amount, supplying the heat medium in the direct supply pipeline 5 to the drying kettle 131 by the power of the heat supply pump 12, and then entering the heat supply main pipeline 1 again through the heat return pipe 15 and the circulating pipe 17, so that internal circulation heat release of the heat medium is realized;
taking the exothermic reaction of resin as an example, before running, ensuring that the heat medium is sufficient in the heat exchanger 10, then closing the main valve 2, keeping the first direct-current valve 7, the internal circulation valve 28, the heat supply pipe valve 8, the normally closed valve 9 and the electromagnetic valve 26 in the open state, adjusting the cold supply valve 21 and the normally open valve 24 to be in the small open state, keeping the other valves in the closed state, enabling the cold medium to enter the heat exchanger 10 through the cold supply valve 21 and to perform heat exchange with the heat medium, enabling the cold medium to take away part of heat of the heat medium, enabling the heat medium to enter the drying kettle 131 through the heat outlet pipe 25 of the heat exchanger, keeping the temperature of resin particles, enabling the heat medium to enter the heat supply main pipe 1 again through the heat return pipe 15 and the circulation pipe 17, and delivering the heat-exchanged heat medium to the heat exchanger 10 through the internal circulation pipe 27 under the power of the heat supply pump 12, thereby realizing the internal circulation of the system and the exothermic reaction of the resin;
in the cooling stage, before operation, the heat medium in the heat exchanger 10 is sufficient, then the main valve 2 is closed, the first direct-current valve 7, the internal circulation valve 28, the heat supply pipe valve 8, the normally-closed valve 9 and the electromagnetic valve 26 are kept in an open state, the cold supply valve 21 and the normally-opened valve 24 are adjusted to be in a fully open state, the other valves are in a closed state, the cold medium enters the heat exchanger 10 through the cold supply valve 21 and exchanges heat with the heat medium, the cold medium takes away most of heat of the heat medium, the heat medium after heat exchange enters the drying kettle 131 through the heat exchanger heat outlet pipe 25, the resin particles are cooled and then enters the heat supply main pipe 1 again through the heat return pipe 15 and the circulation pipe 17, and the heat medium after heat exchange is conveyed into the heat exchanger 10 through the internal circulation pipe 27 under the power of the heat supply pump 12, thereby realizing the internal circulation of the system and the cooling treatment of the resin.
The working principle is as follows:
in the invention, in the temperature rising stage, the main valve 2, the first direct-current valve 7, the control valve 32 and the stop valve 29 are in the open state, and other valves are in the closed state, at the moment, the heat medium enters the direct supply pipeline 5 through the main heat supply pipeline 1, the heat medium is conveyed into an inner cavity 138 in the drying kettle 131 through the air inlet pipe 30 under the starting of the heat supply pump 12 to heat the drying kettle 131, and the resin drying kettle 13 stirs resin particles, so that the drying treatment of the resin particles is realized, the direct heat supply can enable the heat medium to directly act on the resin drying kettle 13, and the heat exchange efficiency is ensured;
in the heat preservation stage, two operation modes are provided, one is endothermic reaction of the resin, and the other is exothermic reaction of the resin; take the endothermic reaction of the resin as an example: before operation, ensuring that the heat medium is sufficient in the heat exchanger 10, then closing the main valve 2, keeping the first direct-flow valve 7, the stop valve 29, the heat supply pipe valve 8 and the normally-closed valve 9 in an opening state, opening the direct-flow valve 7 in a small amount, supplying the heat medium in the direct supply pipeline 5 to the drying kettle 131 by the power of the heat supply pump 12, and then entering the heat supply main pipeline 1 again through the heat return pipe 15 and the circulating pipe 17, so that internal circulation heat release of the heat medium is realized;
taking the exothermic reaction of resin as an example, before running, ensuring that the heat medium is sufficient in the heat exchanger 10, then closing the main valve 2, keeping the first direct-current valve 7, the internal circulation valve 28, the heat supply pipe valve 8, the normally closed valve 9 and the electromagnetic valve 26 in the open state, adjusting the cold supply valve 21 and the normally open valve 24 to be in the small open state, keeping the other valves in the closed state, enabling the cold medium to enter the heat exchanger 10 through the cold supply valve 21 and to perform heat exchange with the heat medium, enabling the cold medium to take away part of heat of the heat medium, enabling the heat medium to enter the drying kettle 131 through the heat outlet pipe 25 of the heat exchanger, keeping the temperature of resin particles, enabling the heat medium to enter the heat supply main pipe 1 again through the heat return pipe 15 and the circulation pipe 17, and delivering the heat-exchanged heat medium to the heat exchanger 10 through the internal circulation pipe 27 under the power of the heat supply pump 12, thereby realizing the internal circulation of the system and the exothermic reaction of the resin;
in the cooling stage, before operation, the heat medium in the heat exchanger 10 is ensured to be sufficient, then the main valve 2 is closed, the first direct valve 7, the internal circulation valve 28, the heat supply pipe valve 8, the normally closed valve 9 and the electromagnetic valve 26 are kept in the opening state, the cold supply valve 21 and the normally opened valve 24 are adjusted to be in the full opening state, the other valves are all in the closing state, the cold medium enters the heat exchanger 10 through the cold supply valve 21 and performs heat exchange with the heat medium, the cold medium takes away most of heat of the heat medium, the heat medium after heat exchange enters the drying kettle 131 through the heat exchanger heat outlet pipe 25, the resin particles are cooled and then enters the heat supply main pipe 1 again through the heat return pipe 15 and the circulation pipe 17, the heat medium after heat exchange is conveyed into the heat exchanger 10 through the internal circulation pipe 27 under the power of the heat supply pump 12, thereby realizing the internal circulation of the system and the cooling treatment of the resin;
in the heat exchange process, the stirring motor 134 drives the fixed housing 1371 to rotate clockwise, the outer stirring paddle 1378 arranged outside the fixed housing 1371 rotates clockwise, and stir the resin, the rotating shaft cylinder 1372 arranged inside the fixed housing 1371 drives the first bevel gear 1373 to rotate, under the cooperation of the connecting frame 1374 and the second bevel gear 1375, the third bevel gear 1376 drives the inner stirring paddle 1379 and the scraper 1370 to rotate anticlockwise through the transmission shaft 1377, so that the stirring of the resin in two directions of the drying kettle 131 can be realized, the contact area of the resin and the heat medium is increased, and the heat treatment efficiency is improved.
Claims (9)
1. A resin independent heat exchange device is characterized by comprising a heat supply main pipeline (1), wherein a main valve (2) is connected on the heat supply main pipeline (1) in series, and the heat supply main pipeline (1) is connected with a heat supply pipe (3) and a direct supply pipeline (5) through a three-way valve (4); the heat supply pipe (3) is connected with the heat exchanger (10); the direct supply pipeline (5) is connected with a heat supply pump (12); the heat supply pump (12) is connected with the resin drying kettle (13) through an air inlet pipe (30); the air inlet pipe (30) is connected with a stop valve (29) in series, and a three-way joint is also connected between the stop valve (29) and the heat supply pump (12) in series and is connected with an inner circulating pipe (27); one end of the internal circulation pipe (27) far away from the air inlet pipe (30) is connected with the heat supply pipe (3);
one end of the heat exchanger (10) is connected with the resin drying kettle (13) through a heat outlet pipe (25) of the heat exchanger, and the heat outlet pipe (25) of the heat exchanger is connected with an electromagnetic valve (26) in series;
a heat return pipe (15) is arranged on one side of the upper end of the resin drying kettle (13); a second pipeline thermometer (16) is connected in series on the heat return pipe (15), a circulating pipe (17) is also connected on the heat return pipe (15), and the other end of the circulating pipe (17) is communicated with the heat supply pipe (3); the tail end of the regenerative pipe (15) is also provided with a control valve (32).
2. The resin-independent heat exchange apparatus of claim 1, wherein: the heat exchanger (10) is fixedly arranged on the mounting frame (11); a base (31) convenient for installing the resin drying kettle (13) is arranged on one side of the mounting rack (11); and a PLC control cabinet (14) is also fixedly mounted on the base (31).
3. The resin-independent heat exchange apparatus of claim 1, wherein: a heat supply pipe valve (8) and a normally closed valve (9) are connected in series on the heat supply pipe (3); the joint of the circulating pipe (17) and the heat supply pipe (3) is positioned between the three-way valve (4) and the heat supply pipe valve (8);
the connection part of the internal circulation pipe (27) and the heat supply pipe (3) is positioned between the heat supply pipe valve (8) and the normally-closed valve (9).
4. The resin-independent heat exchange apparatus of claim 1, wherein: the direct supply pipeline (5) is connected in series with a first pipeline thermometer (6) and a first direct-current valve (7).
5. The resin-independent heat exchange apparatus of claim 1, wherein: the other two interfaces of the heat exchanger (10) are respectively connected with a cold supply pipe (19) and a cold discharge pipe (22); the cold supply pipe (19) is connected with a third pipeline thermometer (20) and a cold supply valve (21) in series; and a fourth pipeline thermometer (23) and a normally open valve (24) are connected to the cold discharge pipe (22) in series.
6. The resin-independent heat exchange apparatus of claim 1, wherein: the resin drying kettle (13) comprises a drying kettle (131), and the top of the drying kettle (131) is provided with a top cover (132) in a matching way; a stirring motor (134) is fixedly arranged on the top cover (132), and a transmission shaft of the stirring motor (134) penetrates into the drying kettle (131) and is connected with a stirring mechanism (137) in a matching manner;
a filling hole (133) and an exhaust hole (135) are also formed above the top cover (132); a handle (136) is welded on the outer side of the upper end of the drying kettle (131);
a discharge hole (139) is formed in the middle of the bottom of the drying kettle (131), a heat inlet (130) is formed in one side of the discharge hole (139), and the heat inlet (130) is communicated with the inner cavity (138); the inner cavity (138) is arranged inside the drying kettle (131).
7. The resin-independent heat exchange apparatus of claim 6, wherein: the stirring mechanism (137) comprises a fixed shell (1371), and the top of the fixed shell (1371) is connected with an output shaft of the stirring motor (134) in a matching way through a coupler; a rotary shaft cylinder (1372) is fixedly connected inside the fixed shell (1371), and a first bevel gear (1373) is installed at the lower end of the rotary shaft cylinder (1372) in a matching manner; the outer part of the rotating shaft cylinder (1372) is also movably connected with a connecting frame (1374), and the middle position of the connecting frame (1374) is movably connected with a second bevel gear (1375); the second bevel gear (1375) is in meshed connection with the first bevel gear (1373) and the third bevel gear (1376) respectively;
the inside interference fit of third bevel gear (1376) be connected with transmission shaft (1377), this transmission shaft (1377) from last to running through rotating shaft section of thick bamboo (1372) down in proper order, first bevel gear (1373), link (1374) and third bevel gear (1376), wherein transmission shaft (1377) and rotating shaft section of thick bamboo (1372), first bevel gear (1373) and link (1374) rotate and are connected.
8. The resin-independent heat exchange apparatus of claim 7, wherein: a plurality of inner stirring paddles (1379) are arranged outside the lower end of the transmission shaft (1377); a plurality of outer stirring paddles (1378) are arranged outside the fixed shell (1371); the revolution diameter of the outer stirring paddle (1378) is larger than that of the inner stirring paddle (1379);
the bottom fixed mounting of transmission shaft (1377) have scraper blade (1370), the bottom of this scraper blade (1370) sets up to the arc form to the laminating is in the inside bottom side of drying kettle (131).
9. A heat exchange process adopting a resin independent heat exchange device is characterized in that: comprises a heating stage, a heat preservation stage and a cooling stage;
in the temperature rising stage, the main valve (2), the first direct-current valve (7), the control valve (32) and the stop valve (29) are in an open state, and other valves are in a closed state, at the moment, a heat medium enters the direct supply pipeline (5) through the main heat supply pipeline (1), the heat medium is conveyed into an inner cavity (138) in the drying kettle (131) through the air inlet pipe (30) under the starting of the heat supply pump (12), the drying kettle (131) is heated, and the resin particles are stirred by the resin drying kettle (13), so that the drying treatment of the resin particles is realized, the direct heat supply can enable the heat medium to directly act on the resin drying kettle (13), and the heat exchange efficiency is ensured;
the heat preservation stage has two operation modes, one is endothermic reaction of the resin, and the other is exothermic reaction of the resin; take the endothermic reaction of the resin as an example: before operation, ensuring that the heat medium is sufficient in the heat exchanger (10), then closing the main valve (2), keeping the first straight-through valve (7), the stop valve (29), the heat supply pipe valve (8) and the normally-closed valve (9) in an opening state, opening the straight-through valve (7) in a small amount, supplying the heat medium in the direct supply pipeline (5) to the drying kettle (131) by the power of the heat supply pump (12), and then entering the heat supply main pipeline (1) again through the heat return pipe (15) and the circulating pipe (17), so that internal circulation heat release of the heat medium is realized;
taking the exothermic reaction of resin as an example, before operation, ensuring that the heat medium is sufficient in the heat exchanger (10), then closing the main valve (2), keeping the first straight-through valve (7), the internal circulation valve (28), the heat supply pipe valve (8), the normally-closed valve (9) and the electromagnetic valve (26) in an open state, adjusting the cold supply valve (21) and the normally-open valve (24) to be in a small-amount open state, keeping the other valves in a closed state, enabling the cold medium to enter the heat exchanger (10) through the cold supply valve (21) and perform heat exchange with the heat medium, enabling the cold medium to take part of heat of the heat medium, enabling the heat medium to enter the drying kettle (131) through the heat exchanger heat outlet pipe (25), enabling the heat preservation of resin particles to enter the heat supply main pipe (1) again through the heat return pipe (15) and the circulation pipe (17), and conveying the heat-exchanged heat medium to the heat exchange main pipe (1) through the internal circulation pipe (27) under the power of the heat supply pump (12) In the device (10), thereby realizing the internal circulation of the system and the exothermic reaction of the resin;
before the cooling stage, before operation, the heat exchanger (10) is ensured to be full of heat medium, then the main valve (2) is closed, the first direct-current valve (7), the internal circulation valve (28), the heat supply pipe valve (8), the normally-closed valve (9) and the electromagnetic valve (26) are kept in an opening state, the cold supply valve (21) and the normally-open valve (24) are adjusted to be in a fully opening state, the other valves are in a closing state, the cold medium enters the heat exchanger (10) through the cold supply valve (21) and exchanges heat with the heat medium, the cold medium takes away most of heat of the heat medium, the heat medium after heat exchange enters the drying kettle (131) through the heat outlet pipe (25) of the heat exchanger, the heat medium after cooling resin particles enters the heat supply main pipe (1) again through the heat return pipe (15) and the circulation pipe (17), and the heat medium after heat exchange is conveyed to the heat medium through the internal circulation pipe (27) under the power of the heat supply pump (12) In the heat exchanger (10), the internal circulation of the system is realized, and the temperature reduction treatment of the resin is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210262082.1A CN114608307B (en) | 2022-03-17 | 2022-03-17 | Resin independent heat exchange device and process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210262082.1A CN114608307B (en) | 2022-03-17 | 2022-03-17 | Resin independent heat exchange device and process |
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| CN114608307B CN114608307B (en) | 2023-08-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105364A (en) * | 2007-08-09 | 2008-01-16 | 郑用琦 | Drying system using rotary kiln waste gas residual heat |
| CN204034700U (en) * | 2014-07-15 | 2014-12-24 | 中国人民解放军63977部队 | A kind of polyfunctional reactant device of augmentation of heat transfer |
| CN211800738U (en) * | 2019-12-12 | 2020-10-30 | 广东立国制药有限公司 | Energy supply system for pharmacy |
| CN212309591U (en) * | 2020-05-06 | 2021-01-08 | 扬州惠通科技股份有限公司 | Temperature rise and fall heating medium system for intermittent polyester |
| CN213797961U (en) * | 2020-11-16 | 2021-07-27 | 陕西淼丰园农业科技有限公司 | Full-biodegradation production device |
-
2022
- 2022-03-17 CN CN202210262082.1A patent/CN114608307B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105364A (en) * | 2007-08-09 | 2008-01-16 | 郑用琦 | Drying system using rotary kiln waste gas residual heat |
| CN204034700U (en) * | 2014-07-15 | 2014-12-24 | 中国人民解放军63977部队 | A kind of polyfunctional reactant device of augmentation of heat transfer |
| CN211800738U (en) * | 2019-12-12 | 2020-10-30 | 广东立国制药有限公司 | Energy supply system for pharmacy |
| CN212309591U (en) * | 2020-05-06 | 2021-01-08 | 扬州惠通科技股份有限公司 | Temperature rise and fall heating medium system for intermittent polyester |
| CN213797961U (en) * | 2020-11-16 | 2021-07-27 | 陕西淼丰园农业科技有限公司 | Full-biodegradation production device |
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