CN111686677A - A prevent stifled reation kettle for polyurethane production - Google Patents

A prevent stifled reation kettle for polyurethane production Download PDF

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Publication number
CN111686677A
CN111686677A CN202010689061.9A CN202010689061A CN111686677A CN 111686677 A CN111686677 A CN 111686677A CN 202010689061 A CN202010689061 A CN 202010689061A CN 111686677 A CN111686677 A CN 111686677A
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China
Prior art keywords
pipe
cavity
blade
reaction
rotating shaft
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CN202010689061.9A
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Chinese (zh)
Inventor
唐定凯
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Qingyuan Fanyi Polyurethane Co ltd
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Qingyuan Fanyi Polyurethane Co ltd
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Priority to CN202010689061.9A priority Critical patent/CN111686677A/en
Publication of CN111686677A publication Critical patent/CN111686677A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18Stationary reactors having moving elements inside
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006Controlling or regulating processes
    • B01J19/0013Controlling the temperature of the process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053Details of the reactor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053Details of the reactor
    • B01J19/0066Stirrers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00Feed or outlet devices; Feed or outlet control devices
    • B01J4/001Feed or outlet devices as such, e.g. feeding tubes
    • B01J4/005Feed or outlet devices as such, e.g. feeding tubes provided with baffles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/0804Cleaning containers having tubular shape, e.g. casks, barrels, drums
    • B08B9/0813Cleaning containers having tubular shape, e.g. casks, barrels, drums by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/087Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049Controlling or regulating processes
    • B01J2219/00051Controlling the temperature
    • B01J2219/00074Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094Jackets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049Controlling or regulating processes
    • B01J2219/00051Controlling the temperature
    • B01J2219/00132Controlling the temperature using electric heating or cooling elements
    • B01J2219/00135Electric resistance heaters

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention relates to the technical field of reaction kettles, and discloses an anti-blocking reaction kettle for polyurethane production, which comprises a kettle body, a rotating shaft, a motor, an air injection pipe, a buffer plate and a controller, wherein a cavity is arranged in the kettle body, the motor is arranged in the kettle body, the rotating shaft is provided with an umbrella-shaped bulk material annular plate, the rotating shaft is provided with stirring blades and scraping plates, the stirring blades and the scraping plates are alternately arranged at intervals, the rotating shaft is provided with stirring rods which are contacted with the cavity bottom of the cavity, the kettle body is provided with a discharge hole and a feed inlet, the rotating shaft extends into the discharge pipe, the rotating shaft is of a hollow structure, the rotating shaft is provided with a material passing hole, the discharge pipe is provided with a mounting hole, the air injection pipe is connected with an air pump, the buffer plate is arranged on the inner wall of the discharge pipe. The invention has the advantages of full mixing of reaction raw materials, automatic control of reaction temperature, blockage prevention, high reaction efficiency and high quality of finished products.

Description

A prevent stifled reation kettle for polyurethane production
Technical Field
The invention relates to the technical field of reaction kettles, in particular to an anti-blocking reaction kettle for polyurethane production.
Background
Polyurethane is short for polyurethane, polyurethane is a high polymer material with the characteristics of high strength, tear resistance, wear resistance and the like, and is widely applied to the fields of light industry, chemical industry, electronics, textile, medical treatment, building materials, automobiles, national defense, aerospace, aviation and the like due to excellent performance, in the production process of the existing polyurethane, the polyurethane is usually put into a reaction device for reaction and is stirred by a simple stirring rod, but when the mixed materials are more, the stirring is uneven, particularly, when the reaction raw materials are agglomerated, the reaction raw materials cannot be dispersed, the quality of finished products is low, but the reaction speed cannot be timely changed according to the reaction, the reaction efficiency is low, the quality of the finished products is low, and because the viscosity of the reaction raw materials is larger, the reaction raw materials are easy to adhere to the inner wall of the reaction device, so that the reaction raw materials cannot be uniformly mixed, it also results in waste of reaction raw materials; in addition, if the discharging pipe is not vertically placed and the discharging pipe is a non-straight pipe, finished products are easy to remain and accumulate in the discharging pipe, so that the discharging pipe is blocked, and even the output pipe is corroded.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the anti-blocking reaction kettle for producing the polyurethane can fully mix reaction raw materials, automatically control reaction temperature and prevent blockage, and is high in reaction efficiency and finished product quality.
In order to solve the technical problem, the invention provides an anti-blocking reaction kettle for polyurethane production, which comprises a kettle body, a rotating shaft, a motor, an air injection pipe, a buffer plate and a controller, wherein a cavity is arranged in the kettle body, the motor is arranged at the top of the kettle body, an output shaft of the motor penetrates through the kettle body and extends into the cavity to be connected with the rotating shaft, a bulk material annular plate is arranged at the upper part of the rotating shaft and is umbrella-shaped, a plurality of stirring blades for stirring reaction raw materials and a plurality of scraping plates for scraping the reaction raw materials on the cavity wall of the cavity are arranged at the middle part of the rotating shaft, the stirring blades and the scraping plates are alternately arranged at intervals along the axial direction of the rotating shaft, the tail ends of the scraping plates are in contact with the cavity wall of the cavity, a stirring rod is arranged at the lower part of the rotating shaft, and the lower surface of the stirring rod is in contact, the top of the kettle body is provided with a feed inlet, the feed inlet is positioned above the bulk material annular plate, the bottom of the kettle body is provided with a discharge outlet, the discharge outlet is connected with a discharge pipe, the bottom end of the rotating shaft extends into the discharge pipe, the rotating shaft is of a hollow structure, the lower part of the rotating shaft is provided with a material passing port for communicating the cavity with the discharge pipe, the discharge pipe is provided with a mounting hole, one end of the gas injection pipe penetrates through the mounting hole to extend into the discharge pipe and is arranged towards the discharge end of the discharge pipe, the other end of the gas injection pipe is connected with a gas pump, the buffer plate is provided with a plurality of inner walls which are arranged on the discharge pipe in a staggered manner, the feed inlet is provided with a feed valve, the discharge pipe is provided with a discharge valve, the kettle body is provided with a temperature control mechanism, the controller is respectively electrically connected with the motor, the feed valve, the discharge valve, the air pump, the temperature control mechanism and the temperature sensor.
As a preferable scheme of the invention, the gas ejector pipe is provided with a one-way valve.
In a preferred embodiment of the invention, the free end of the buffer plate is inclined toward the discharge end of the tapping pipe.
As a preferable mode of the present invention, the stirring blade includes a mounting plate and a plurality of blades disposed at an outer periphery of the mounting plate at intervals, the blades include a first blade and a second blade, one end of the first blade is connected to the mounting plate, the other end of the first blade is connected to one end of the second blade, the second blade is disposed vertically, and an included angle is formed between the first blade and the second blade.
As a preferable scheme of the present invention, the temperature control mechanism includes a medium flow channel arranged around the periphery of the kettle body, the medium flow channel is provided with a gas inlet and a gas outlet, the gas inlet and the gas outlet are connected with a change-over valve, the gas outlet is connected with a collection box, when the reaction raw material is heated, steam is supplied to the medium flow channel, and when the reaction raw material is cooled, cooling liquid is supplied to the medium flow channel.
As a preferable scheme of the present invention, the temperature control mechanism further comprises a heating wire, the heating wire is arranged on the outer side of the bottom surface of the kettle body, and the heating wire is electrically connected with the controller.
In a preferred embodiment of the present invention, the lower surface of the stirring rod is provided with a plurality of protrusions spaced apart from each other, and the protrusions contact with the bottom surface of the cavity.
As a preferable scheme of the invention, the upper part of the kettle body is provided with an air inlet pipe and an air outlet pipe for conveying air, the air inlet pipe is provided with an air inlet valve, the air outlet pipe is provided with an air outlet valve, the inlet end of the air outlet pipe is provided with a filter screen, and the controller is electrically connected with the air inlet valve and the air outlet valve respectively.
As a preferable scheme of the invention, the scraper comprises a connecting plate and an arc-shaped plate, one end of the connecting plate is connected with the inner side wall of the arc-shaped plate, the other end of the connecting plate is connected with the rotating shaft in an inserting manner or in a sleeving manner, and the outer side wall of the arc-shaped plate is in contact with the cavity wall of the cavity.
As a preferable scheme of the invention, a display screen is arranged on the outer wall of the kettle body, and the display screen is electrically connected with the controller.
Compared with the prior art, the anti-blocking reaction kettle for polyurethane production has the beneficial effects that:
according to the invention, through the arrangement of the bulk material ring plate, the reaction raw materials fall on the bulk material ring plate after entering from the feeding hole and then fall off from the bulk material ring plate, so that the reaction raw materials are firstly dispersed and mixed before being stirred, and the subsequent stirring efficiency and the finished product quality are improved; through the arrangement of the stirring blades and the scraping plates, reaction raw materials can be fully mixed in the cavity, the reaction efficiency is improved, the reaction time is shortened, meanwhile, the reaction raw materials attached to the cavity wall of the cavity can be continuously scraped off, and then the scraped reaction raw materials are mixed, so that the mixing degree of the reaction raw materials is improved, the waste of the reaction raw materials is reduced, and the utilization rate of the reaction raw materials is high; the reaction raw materials positioned at the lower part of the cavity are stirred by the arrangement of the stirring rod, so that insufficient reaction caused by the deposition of the reaction raw materials is effectively prevented, and the quality of a finished product is improved; through the arrangement of the air injection pipe, residual materials remained in the discharging pipe are blown out by utilizing air flow, so that the phenomena of blocking and rusting of the discharging pipe caused by the residual finished products are avoided, the discharging pipe is suitable for the discharging pipes with different shapes or different orientations, and meanwhile, the output pipe can be cleaned conveniently; through the arrangement of the buffer plate, the discharging speed of the finished product is slowed down, the impact force of the finished product on the material receiving equipment is reduced, and further the influence on the quality of the finished product is reduced, so that the finished product is discharged stably, the finished product is prevented from splashing, the finished product is convenient to collect, and the quality of the finished product is high; in addition, through the combination of the temperature control mechanism and the temperature sensor, the temperature of the inner cavity can be automatically controlled according to the reaction requirement, the reaction temperature can be automatically controlled, the reaction efficiency is improved, and the reaction time is shortened;
therefore, reaction raw materials are dispersed and mixed through the bulk material ring plate, then are stirred and mixed through the stirring blades, the scraping plates and the stirring rod, are output from the discharge pipe after being uniformly mixed, and slow down the discharge speed through the buffer plate, meanwhile, the temperature of the inner cavity is automatically controlled through the temperature control mechanism and the temperature sensor, and finally, residual finished products in the discharge pipe are blown out through the gas injection pipe, so that the reaction raw materials are fully mixed, the reaction raw materials can fully react, the finished products are stably discharged, and the quality of the finished products is high; the reaction temperature can be automatically controlled, the reaction efficiency is high, the reaction time is short, the quality of finished products is high, the reaction raw materials on the cavity wall of the cavity can be scraped off through the scraper, the waste of the reaction raw materials is reduced, and the utilization rate of the reaction raw materials is high.
Drawings
FIG. 1 is a schematic structural diagram of an anti-blocking reaction kettle for polyurethane production according to an embodiment of the present invention;
in the figure, 1, a kettle body; 2. a rotating shaft; 3. a motor; 4. a cavity; 5. a bulk material ring plate; 6. stirring blades; 61. mounting a plate; 62. a first blade; 63. a second blade; 7. a squeegee; 71. a connecting plate; 72. an arc-shaped plate; 8. a stirring rod; 9. a gas ejector tube; 10. a buffer plate; 11. a discharge pipe; 12. a material passing port; 13. a feed valve; 14. a discharge valve; 15. a medium flow passage; 16. an air inlet port; 17. a gas and liquid outlet; 18. heating wires; 19. a bump; 20. an air inlet pipe; 21. an air outlet pipe; 22. a changeover valve; 23. a feed inlet; 24. a discharge port; 25. an air pump.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, a preferred embodiment of an anti-blocking reaction kettle for polyurethane production according to a preferred embodiment of the present invention includes a kettle body 1, a rotating shaft 2, a motor 3, an air injection pipe 9, a buffer plate 10 and a controller, wherein a cavity 4 is formed in the kettle body 1, the motor 3 is disposed at the top of the kettle body 1, an output shaft of the motor 3 passes through the kettle body 1 and extends into the cavity 4 to be connected with the rotating shaft 2, a bulk material ring plate 5 is disposed at the upper portion of the rotating shaft 2, the bulk material ring plate 5 is umbrella-shaped, a plurality of stirring blades 6 for stirring reaction materials and a plurality of scraping plates 7 for scraping reaction materials on the cavity wall of the cavity 4 are disposed at the middle portion of the rotating shaft 2, preferably, the plurality of stirring blades 6 are respectively disposed at intervals along the axial direction of the rotating shaft 2 and the circumferential direction of the rotating shaft 2, the plurality of scraping plates 7 are respectively disposed at intervals along the axial direction of the rotating shaft 2 and the circumferential direction of the rotating shaft 2, the stirring blades 6 and the scraping plates 7 are alternately arranged at intervals, and the tail ends of the scraping plates 7 are in contact with the cavity wall of the cavity 4; preferably, one end of the stirring blade 6 is in plug-in connection or socket connection with the rotating shaft 2, the stirring blade 6 is in plug-in connection with the rotating shaft 2, the scraper 7 comprises a connecting plate 71 and an arc-shaped plate 72, one end of the connecting plate 71 is connected with the inner side wall of the arc-shaped plate 72, the other end of the connecting plate 71 is in plug-in connection or socket connection with the rotating shaft 2, and the outer side wall of the arc-shaped plate 72 is in contact with the cavity wall of the cavity 4; the lower part of axis of rotation 2 is equipped with stirring rod 8, the lower surface of stirring rod 8 with contact at the bottom of the chamber of cavity 4, the top of the cauldron body 1 is equipped with feed inlet 23, feed inlet 23 is located the top of bulk cargo crown plate 5, the bottom of the cauldron body 1 is equipped with discharge gate 24, discharge gate 24 department is connected with discharging pipe 11, the bottom of axis of rotation 2 extends in discharging pipe 11, axis of rotation 2 is hollow structure, the lower part of axis of rotation 2 is equipped with cavity 4 with the punishment in advance mouth 12 of discharging pipe 11 intercommunication, be equipped with the mounting hole on discharging pipe 11, the one end of jet-propelled pipe 9 passes the mounting hole and extends in discharging pipe 11 and towards the discharge end setting of discharging pipe 11, the other end of jet-propelled pipe 9 is connected with air pump 25, buffer board 10 is equipped with a plurality ofly and crisscross the setting and is in, the feed inlet 23 department is equipped with feed valve 13, be equipped with bleeder valve 14 on the discharging pipe 11, be equipped with on the cauldron body 1 and be used for control the temperature control mechanism of the temperature of cavity 4, be equipped with temperature sensor on the chamber wall lower part of cavity 4, the controller respectively with motor 3, feed valve 13, bleeder valve 14, air pump 25, temperature control mechanism and temperature sensor electricity are connected.
Illustratively, the air ejector pipe 9 is provided with a one-way valve to prevent the finished product from flowing into the air pump 25, so as to prolong the service life of the air pump 25.
Illustratively, the free end of the buffer plate 10 is inclined toward the discharge end of the tapping pipe 11; therefore, the reaction raw materials on the buffer plate 10 can fall under the action of gravity, the reaction raw materials are prevented from being accumulated on the buffer plate 10, and simultaneously, more gas sprayed from the gas spraying pipe 9 flows to the discharge end of the discharge pipe 11.
Illustratively, the stirring blade 6 comprises a mounting plate 61 and a plurality of blades arranged at the periphery of the mounting plate 61 at intervals, the blades comprise a first blade 62 and a second blade 63, one end of the first blade 62 is connected with the mounting plate 61, the other end of the first blade 62 is connected with one end of the second blade 63, the second blade 63 is arranged vertically, and an included angle is formed between the first blade 62 and the second blade 63, preferably, the included angle is 20-30 °; from this, because the viscidity of reaction raw materials is great, through the setting of first blade 62 and second blade 63, resistance when can reducing the blade rotation, can carry out vertical mixture and horizontal mixture to reaction raw materials simultaneously, it is more even to mix, reaction efficiency is higher, finished product quality is higher, in addition, can realize holding up and pushing down reaction raw materials when making the blade rotate along the equidirectional, improve controller control blade rotation direction during the ejection of compact, make the blade realize the pushing down to reaction raw materials, in order to accelerate ejection of compact speed.
Illustratively, the temperature control mechanism comprises a medium flow channel 15 arranged around the periphery of the kettle body 1, the medium flow channel 15 is provided with a gas inlet 16 and a gas outlet 17, the gas inlet 16 is connected with a change-over valve 22, the gas outlet 17 is connected with a collecting box, when the reaction raw materials are heated, steam is supplied to the medium flow channel 15, and when the reaction raw materials are cooled, cooling liquid is supplied to the medium flow channel 15; therefore, the controller controls the conversion valve 22 to be communicated with the refrigerator or the heater according to the temperature value detected by the temperature sensor, and then supplies steam or cooling liquid to the medium flow channel 15, so that the temperature of the inner cavity is controlled according to the reaction requirement, the reaction temperature is automatically controlled, the reaction efficiency is improved, and the reaction time is shortened.
Exemplarily, the temperature control mechanism further comprises a heating wire 18, the heating wire 18 is arranged on the outer side of the bottom surface of the kettle body 1, and the heating wire 18 is electrically connected with the controller; therefore, the temperature of the inner cavity can meet the requirement, meanwhile, the heating area of the reaction raw materials is increased, the reaction raw materials are uniformly heated, the reaction efficiency is improved, and the reaction time is shortened.
Illustratively, the lower surface of the stirring rod 8 is provided with a plurality of spaced lugs 19, and the lugs 19 are in contact with the bottom surface of the cavity 4; therefore, the friction force between the stirring rod 8 and the cavity bottom is reduced, and the rotating fluency of the stirring rod 8 is ensured.
Illustratively, the upper part of the kettle body 1 is provided with an air inlet pipe 20 and an air outlet pipe 21 for conveying air, the air inlet pipe 20 is provided with an air inlet valve, the air outlet pipe 21 is provided with an air outlet valve, the inlet end of the air outlet pipe 21 is provided with a filter screen, and the controller is electrically connected with the air inlet valve and the air outlet valve respectively; preferably, when the input gas is nitrogen, the filter screen comprises a calcium chloride drying layer, a sponge adsorption layer and an activated carbon adsorption layer, and the calcium chloride drying layer is close to the air inlet end of the air outlet pipe 21; such design is convenient for fill gas in cavity 4, prevents that reaction raw materials from flowing out, can guarantee the cleanliness factor of combustion gas simultaneously.
Exemplarily, be equipped with the display screen on the outer wall of the cauldron body 1, the display screen with the controller electricity is connected, carries out real time monitoring to reation kettle's inside reaction temperature, and the user of being convenient for observes the temperature in the cavity 4 directly perceivedly, and control by temperature change is effectual.
It should also be noted that the sealing rings are arranged between the rotating shaft 2 and the discharge port 24 and between the gas injection pipe 9 and the mounting holes, so that reaction raw materials are prevented from flowing out from the gap between the rotating shaft 2 and the discharge port 24 and the gap between the gas injection pipe 9 and the mounting holes, and the sealing performance is good.
To sum up, the embodiment of the invention provides an anti-blocking reaction kettle for polyurethane production, which enables reaction raw materials to fall onto a bulk material ring plate 5 after entering from a feeding hole 23 through the arrangement of the bulk material ring plate 5 and then to slide off from the bulk material ring plate 5, so that the reaction raw materials are dispersed and mixed before being stirred, thereby improving the subsequent stirring efficiency and the finished product quality; through the arrangement of the stirring blades 6 and the scraping plates 7, reaction raw materials can be fully mixed in the cavity 4, the reaction efficiency is improved, the reaction time is shortened, meanwhile, the reaction raw materials attached to the cavity wall of the cavity 4 can be continuously scraped off, and then the scraped reaction raw materials are mixed, so that the mixing degree of the reaction raw materials is improved, the waste of the reaction raw materials is reduced, and the utilization rate of the reaction raw materials is high; through the arrangement of the blades, the resistance of the blades during rotation can be reduced, and meanwhile, the reaction raw materials can be vertically mixed and transversely mixed, so that the mixing is more uniform, the reaction efficiency is higher, and the quality of a finished product is higher; the reaction raw materials positioned at the lower part of the cavity 4 are stirred by the arrangement of the stirring rod 8, so that the insufficient reaction caused by the deposition of the reaction raw materials is effectively prevented, and the quality of a finished product is improved; through the arrangement of the gas injection pipe 9, residual materials remained in the discharging pipe 11 are blown out by using gas flow, so that the phenomena of blocking and rusting of the discharging pipe 11 caused by the residual finished products are avoided, the gas injection pipe is suitable for the discharging pipes 11 with different shapes or different orientations, and meanwhile, the output pipe can be cleaned, so that the cleaning is convenient; through the arrangement of the buffer plate 10, the discharging speed of the finished product is slowed down, the impact force of the finished product on the material receiving equipment is reduced, the influence on the quality of the finished product is further reduced, the finished product is discharged stably, the finished product is prevented from splashing, the finished product is convenient to collect, and the quality of the finished product is high; in addition, through the combination of temperature control mechanism and temperature sensor, the controller controls change-over valve 22 according to the temperature value that temperature sensor detected and communicates the switch of refrigerator or heater and heater strip 18, and then supplies vapour or coolant liquid to medium runner 15 to can realize automatic control reaction temperature according to the temperature of reaction demand automatic control inner chamber, improve reaction efficiency, shorten reaction time.
Therefore, reaction raw materials are dispersed and mixed through the bulk material ring plate 5, and are stirred and mixed through the stirring blades 6, the scraping plates 7 and the stirring rods 8, the reaction raw materials are output from the discharge pipe 11 after being uniformly mixed, the discharge speed is reduced through the buffer plate 10, the temperature of the inner cavity is automatically controlled through the temperature control mechanism and the temperature sensor, and finally, residual finished products in the discharge pipe 11 are blown out through the gas injection pipe 9, so that the reaction raw materials are fully vertically mixed and transversely mixed, the reaction raw materials can fully react, the reaction raw materials are uniformly mixed, the reaction efficiency is high, the finished products are stably discharged, and the quality of the finished products is high; the reaction temperature can be automatically controlled, the reaction efficiency is high, the reaction time is short, the quality of finished products is high, the reaction raw materials on the cavity wall of the cavity 4 can be scraped off through the scraper 7, the waste of the reaction raw materials is reduced, and the utilization rate of the reaction raw materials is high.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a prevent stifled reation kettle for polyurethane production, its characterized in that, includes the cauldron body, axis of rotation, motor, jet-propelled pipe, buffer board and controller, the internal cavity that is equipped with of cauldron, the motor sets up the top of the cauldron body, the output shaft of motor passes the cauldron body extends in the cavity with rotation axis connection, the upper portion of axis of rotation is equipped with the bulk cargo crown plate, and the bulk cargo crown plate is umbelliform, the middle part of axis of rotation is equipped with a plurality of stirring leaves that are used for stirring reaction material and a plurality of scraper blade that are used for with reaction material on the chamber wall of cavity scrapes off, the stirring leaf with the scraper blade is followed the axial interval setting in turn of axis of rotation, the end of scraper blade with the chamber wall of cavity contacts, the lower part of axis of rotation is equipped with the stirring rod, the lower surface of stirring rod with the chamber end of cavity contacts, the top of the cauldron body is equipped, the feed inlet is located the top of bulk cargo crown plate, the bottom of the cauldron body is equipped with the discharge gate, discharge gate department is connected with the discharging pipe, the bottom of axis of rotation extends in the discharging pipe, the axis of rotation is hollow structure, the lower part of axis of rotation be equipped with the cavity with the punishment in advance mouth of discharging pipe intercommunication, be equipped with the mounting hole on the discharging pipe, the one end of jet-propelled pipe is passed the mounting hole and is extended in the discharging pipe and towards the discharge end setting of discharging pipe, the other end of jet-propelled pipe is connected with the air pump, the buffer board is equipped with a plurality ofly and crisscross the setting and is in the inner wall of discharging pipe, feed inlet department is equipped with the feed valve, be equipped with the bleeder valve on the discharging pipe, be equipped with on the cauldron body and be used for controlling the temperature control mechanism of, The feed valve, the discharge valve, the air pump, the temperature control mechanism and the temperature sensor are electrically connected.
2. The anti-blocking reaction kettle for polyurethane production as recited in claim 1, wherein the gas injection pipe is provided with a one-way valve.
3. The polyurethane reactor of claim 1, wherein a free end of the baffle plate is sloped toward a discharge end of the discharge pipe.
4. The polyurethane reactor of claim 1, wherein the stirring blade comprises a mounting plate and a plurality of blades spaced apart from each other and disposed on the periphery of the mounting plate, and the blades comprise a first blade and a second blade, one end of the first blade is connected to the mounting plate, the other end of the first blade is connected to one end of the second blade, the second blade is vertically disposed, and an included angle is formed between the first blade and the second blade.
5. The polyurethane reactor according to claim 1, wherein the temperature control mechanism comprises a medium flow channel surrounding the periphery of the reactor body, the medium flow channel is provided with a gas inlet and a gas outlet, the gas inlet is connected with a change-over valve, the gas outlet is connected with a collection box, when the reaction raw material is heated, steam is supplied to the medium flow channel, and when the reaction raw material is cooled, cooling liquid is supplied to the medium flow channel.
6. The polyurethane reactor according to claim 5, wherein the temperature control mechanism further comprises a heating wire, the heating wire is arranged outside the bottom surface of the reactor body, and the heating wire is electrically connected with the controller.
7. The polyurethane reactor of claim 1, wherein the lower surface of the stirring rod is provided with a plurality of spaced protrusions, and the protrusions contact with the bottom surface of the cavity.
8. The polyurethane reaction kettle according to claim 1, wherein an air inlet pipe and an air outlet pipe for conveying air are arranged at the upper part of the kettle body, an air inlet valve is arranged on the air inlet pipe, an air outlet valve is arranged on the air outlet pipe, a filter screen is arranged at the inlet end of the air outlet pipe, and the controller is electrically connected with the air inlet valve and the air outlet valve respectively.
9. The polyurethane reactor of claim 1, wherein the scraper comprises a connecting plate and an arc-shaped plate, one end of the connecting plate is connected with the inner side wall of the arc-shaped plate, the other end of the connecting plate is connected with the rotating shaft in an inserting or sleeving manner, and the outer side wall of the arc-shaped plate is in contact with the cavity wall of the cavity.
10. The polyurethane reaction kettle according to claim 1, wherein a display screen is arranged on the outer wall of the kettle body, and the display screen is electrically connected with the controller.
CN202010689061.9A 2020-07-15 2020-07-15 A prevent stifled reation kettle for polyurethane production Pending CN111686677A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114515524A (en) * 2021-12-27 2022-05-20 重庆中天海智生态环境科技有限公司 Soil remediation thermal desorption equipment and process thereof
CN114681951A (en) * 2022-03-21 2022-07-01 江苏达诺尔科技股份有限公司 Ultrapure ammonia water adsorption tower

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114515524A (en) * 2021-12-27 2022-05-20 重庆中天海智生态环境科技有限公司 Soil remediation thermal desorption equipment and process thereof
CN114681951A (en) * 2022-03-21 2022-07-01 江苏达诺尔科技股份有限公司 Ultrapure ammonia water adsorption tower
CN114681951B (en) * 2022-03-21 2023-06-20 江苏达诺尔科技股份有限公司 Ultra-pure ammonia adsorption tower

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