CN217699094U - Polyether polyol synthesis automatic control system for modified MDI - Google Patents

Abstract

The utility model relates to a modified MDI polyether polyol synthesis technical field especially relates to a modified MDI is with polyether polyol's synthesis automatic control system. The automatic control system for the synthesis of the polyether polyol for the modified MDI comprises a workbench, wherein a support column is arranged in the middle of the upper surface of the workbench, a support plate is fixedly arranged at the top end of the support column, and a first support frame, a second support frame and a third support frame are arranged on the upper surface of the support plate; the liquid injection mechanism is used for injecting raw materials and is fixedly arranged on the first support frame; the synthesis mechanism is used for stirring and synthesizing polyether polyol for the modified MDI and is fixedly arranged on the second support frame and comprises a lifting assembly, a heating assembly and a stirring assembly; and the travelling mechanism is used for automatically switching the travelling mechanism among the liquid injection mechanism, the synthesis mechanism and the cooling mechanism to travel and is arranged in the support column. The utility model provides a modified MDI uses polyether polyol's synthesis automatic control system utensil intelligent synthesis, convenient operation's advantage.

Description

Polyether polyol synthesis automatic control system for modified MDI

Technical Field

The utility model relates to a modified MDI polyether polyol synthesis technical field especially relates to a modified MDI uses polyether polyol's synthesis automatic control system.

Background

Alcohol compounds with different functionalities are used as an initiator, potassium hydroxide (KOH) is used as a catalyst, and the alcohol compounds, propylene Oxide (PO) and Ethylene Oxide (EO) are subjected to ring-opening addition reaction through a low Volatile Organic Compound (VOC) polymerization process to synthesize the low-VOC polyether polyol JQN-6034D with the hydroxyl value of about 24mg KOH/g. The polyether polyol reacts with isocyanate MDI-100, MDI-50 and PM-200 to synthesize the modified MDI for the high resilience foam, and the high resilience polyurethane foam prepared by the polyether polyol has the characteristics of small smell, low density (about 37kg/m < 3 >), good opening property and excellent physical property.

However, in the synthesis process of the modified MDI, the main steps are as follows:

1) Weighing a proper amount of self-made polyether polyol JQN-6034 or JQN-6034D, adding into a reaction device, heating to 80-85 ℃, and vacuumizing while blowing nitrogen for dehydration for 2.5 hours;

2) Then, cooling to normal temperature, adding a proper amount of MDI-100 and MDI-50, and reacting for 2.5h at 80 ℃;

3) And cooling to normal temperature again, adding a proper amount of PM-200, heating to 60 ℃, and stirring for 0.5h to obtain 2 types of modified MDI with NCO matrix content of about 29%.

The whole modification synthesis process is long in time consumption and large in operation interval, manual operation is adopted to carry out respective operation in sequence, energy consumption is high, and synthesis control cannot be automated well.

Therefore, there is a need to provide a new automatic control system for the synthesis of polyether polyol for modified MDI to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a modified polyether polyol's for MDI synthesis automatic control system which is intelligent synthesis, convenient operation.

The utility model provides a modified polyether glycol's for MDI synthesis automatic control system includes: the middle part of the upper surface of the workbench is provided with a support column, the top end of the support column is fixedly provided with a support plate, and the upper surface of the support plate is provided with a first support frame, a second support frame and a third support frame;

the liquid injection mechanism is used for injecting raw materials and is fixedly arranged on the first support frame;

the synthesis mechanism is used for stirring and synthesizing polyether polyol for the modified MDI and is fixedly arranged on the second support frame and comprises a lifting component, a heating component and a stirring component, the lifting component is fixedly arranged on the second support frame, and the heating component for controlling the synthesis temperature and the stirring component for reacting and mixing are arranged on the lifting component;

the cooling mechanism is used for synthesizing cooling and is fixedly arranged on the third support frame;

the walking mechanism is used for automatically switching and walking among the liquid injection mechanism, the synthesis mechanism and the cooling mechanism and is arranged on the supporting column, and the synthesis reaction barrel is arranged on the walking mechanism;

and the master control box is used for controlling the automatic synthesis of polyether polyol for modified MDI and is arranged in the workbench.

Preferably, annotate liquid mechanism and include water tank, oil pump and notes liquid funnel, divide into four mutually independent cavities through the baffle in the water tank, and install the oil pump with four cavity one-to-ones on the lateral wall of water tank, four the oil feed end of oil pump corresponds four respectively the cavity intercommunication, and the end of producing oil of four oil pumps all pass the water tank intercommunication downwards and have the liquid funnel of annotating, it inserts and locates in the backup pad to annotate the liquid funnel, and the liquid outlet is towards the backup pad below.

Preferably, the lifting assembly comprises a screw rod, a lifting motor, a lifting frame and a threaded sleeve, the screw rod is rotatably installed on the second support frame and used for driving the screw rod to rotate, the lifting motor is fixedly installed at the top end of the second support frame, the lifting frame is slidably installed on the second support frame, the threaded sleeve is fixedly installed on the lifting frame, the threaded sleeve is in threaded connection with the screw rod, and the lifting frame is provided with the heating assembly and the stirring assembly.

Preferably, the heating assembly comprises a sealing cover, a heating pipe, an air inlet cover, a heating resistance wire, a vacuum pipe, a conversion joint and an air nozzle, the sealing cover is fixedly mounted at the bottom end of the hanging bracket and rotatably mounted on the sealing cover, the bottom end of the heating pipe is in a sealed shape, the air nozzle communicated with the inner cavity of the heating pipe is embedded in the bottom end of the heating pipe, the top end of the heating pipe is in an open shape, the top end of the heating pipe upwards penetrates through the sealing cover to be rotatably connected with the air inlet cover, the air inlet cover is fixedly connected with the hanging bracket, the heating resistance wire is mounted on the air inlet cover, the heating end of the heating resistance wire downwards penetrates through the air inlet cover to stretch into the heating pipe, the conversion joint is mounted on the air inlet cover, and the vacuum pipe is inserted into the sealing cover.

Preferably, the stirring assembly includes agitator motor, driving gear, driven gear and puddler, agitator motor fixed mounting is on the gallows, and the cover is equipped with the driving gear on agitator motor's the output shaft, driven gear overlaps and locates on the heating pipe, and driven gear and driving gear meshing, a plurality of the puddler is evenly installed on the lateral wall that the heating pipe is located sealed lid below, and a plurality of puddler all inclines to set up down.

Preferably, cooling body includes hydraulic stem, link, metal sleeve, radiator fan one, radiator fin, connecting rod and temperature sensor, hydraulic stem fixed mounting is on the top of support frame three, and the flexible fixedly connected with link of hydraulic stem, the bottom fixedly connected with metal sleeve of link, and lie in the top of metal sleeve on the link and install radiator fan one, a plurality of radiator fin are evenly installed to metal sleeve's lateral wall, and the connecting rod is installed to the bottom of link, the connecting rod passes metal sleeve fixedly connected with temperature sensor downwards.

Preferably, a second cooling fan is further mounted on the upper surface of the workbench, which is located right below the cooling mechanism.

Preferably, running gear includes rotor plate, driving motor, drive gear, fixed gear, mount pad, pressure sensor, auxiliary stay pole and universal wheel, the rotor plate rotates to be installed on the support column, and installs driving motor on the rotor plate, driving motor's projecting shaft cover is equipped with drive gear, fixed gear fixed mounting is on the support column, and fixed gear and drive gear meshing for the synthetic reaction barrel of installation mount pad fixed mounting is in the one end that deviates from the support column of deviating from the rotor plate, and is equipped with pressure sensor between mount pad and the rotor plate, auxiliary stay pole fixed mounting is in the bottom that the support column one end deviates from the rotor plate, and the universal wheel is installed to auxiliary stay pole's bottom.

Preferably, a liquid discharge pipe is inserted into the bottom end of the synthesis reaction barrel, and a control valve is installed at the bottom end of the liquid discharge pipe downwards through the installation seat and the rotating plate.

Preferably, an industrial controller is integrated in the master control box and electrically connected with the oil pump, the lifting motor, the heating resistance wire, the stirring motor, the hydraulic rod, the first cooling fan, the temperature sensor, the driving motor, the pressure sensor and the second cooling fan.

Compared with the prior art, the utility model provides a modified polyether glycol's for MDI synthetic automatic control system has following beneficial effect:

1. the utility model provides a modified MDI uses polyether glycol's synthetic automatic control system, through utilizing running gear automatic with synthetic reaction expert circulation in proper order through annotating liquid mechanism, synthetic mechanism and cooling body, automatic in proper order to synthetic reaction bucket in injection synthetic raw materials, then rotate to synthetic mechanism department and heat up, cool off after heating up, whole synthetic process automatic control, the simple operation only needs the manual work regularly to supplement the stoste and discharge the composition can;

2. the synthesis mechanism can perform efficient operation on temperature rise stirring at each stage in the synthesis reaction by utilizing the matching of a lead screw, a lifting motor, a hanging bracket, a threaded sleeve, a sealing cover, a heating pipe, an air inlet cover, a heating resistance wire, a vacuum pipe, a conversion joint, an air nozzle, a stirring motor, a driving gear, a driven gear and a stirring rod through the centralized design of the lifting component, the temperature rise component and the stirring component, so that the synthesis reaction is convenient to perform;

3. the cooling mechanism can rapidly cool the synthesis reaction barrel after temperature rise through the cooperation of the hydraulic rod, the connecting frame, the metal sleeve, the first cooling fan, the first cooling fin, the connecting rod, the temperature sensor and the cooling fan, and is favorable for shortening the whole synthesis reaction time.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention for an automatic control system for synthesizing polyether polyol for modified MDI;

FIG. 2 is a schematic structural diagram of another view of the automatic control system for the synthesis of polyether polyol for modified MDI provided by the present invention;

FIG. 3 is a schematic structural diagram of the synthesizing mechanism shown in FIG. 2;

FIG. 4 is a schematic structural view of the elevating assembly and the warming assembly shown in FIG. 1;

FIG. 5 is a schematic structural view of the cooling mechanism shown in FIG. 1;

FIG. 6 is a schematic structural diagram of the traveling mechanism shown in FIG. 1;

fig. 7 is a partially enlarged view of a shown in fig. 2.

The reference numbers in the figures: 1. a work table; 11. a support column; 12. a support plate; 13. a first support frame; 14. a second support frame; 15. a third support frame; 2. a liquid injection mechanism; 21. a water tank; 22. an oil pump; 23. a liquid injection funnel; 3. a synthesizing mechanism; 31. a lifting assembly; 311. a lead screw; 312. a lifting motor; 313. a hanger; 314. A threaded sleeve; 32. a temperature raising component; 321. a sealing cover; 322. heating a tube; 323. an air intake hood; 324. heating resistance wires; 325. a vacuum tube; 326. a crossover sub; 327. an air nozzle; 33. a stirring assembly; 331. A stirring motor; 332. a driving gear; 333. a driven tooth; 334. a stirring rod; 4. a cooling mechanism; 41. A hydraulic lever; 42. a connecting frame; 43. a metal sleeve; 44. a first heat radiation fan; 45. heat dissipating fins; 46. A connecting rod; 47. a temperature sensor; 5. a traveling mechanism; 51. a rotating plate; 52. a drive motor; 53. A drive gear; 54. fixing a gear; 55. a mounting seat; 56. a pressure sensor; 57. an auxiliary support bar; 58. a universal wheel; 6. synthesizing a reaction barrel; 61. a liquid discharge pipe; 62. a control valve; 7. a master control box; 8. and a second heat radiation fan.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

Referring to fig. 1 to 7, an embodiment of the present invention provides an automatic control system for synthesizing polyether polyol for modified MDI, including: the device comprises a workbench 1, a liquid injection mechanism 2, a synthesis mechanism 3, a cooling mechanism 4, a traveling mechanism 5, a synthesis reaction barrel 6 and a master control box 7.

The middle part of the upper surface of the workbench 1 is provided with a support column 11, the top end of the support column 11 is fixedly provided with a support plate 12, and the upper surface of the support plate 12 is provided with a first support frame 13, a second support frame 14 and a third support frame 15; the liquid injection mechanism 2 for injecting the raw materials is fixedly arranged on the first support frame 13; the synthesis mechanism 3 for stirring and synthesizing the polyether polyol for the modified MDI is fixedly arranged on the second support frame 14, the synthesis mechanism 3 comprises a lifting component 31, a heating component 32 and a stirring component 33, the lifting component 31 is fixedly arranged on the second support frame 14, and the heating component 32 for controlling the synthesis temperature and the stirring component 33 for reacting and mixing are arranged on the lifting component 31; the cooling mechanism 4 for synthetic cooling is fixedly arranged on the third support frame 15; a traveling mechanism 5 for automatically switching and traveling among the liquid injection mechanism 2, the synthesis mechanism 3 and the cooling mechanism 4 is installed on the support column 11, and a synthesis reaction barrel 6 is installed on the traveling mechanism 5; a master control box 7 for controlling the automatic synthesis of polyether polyol for modified MDI is arranged in the workbench 1.

It should be noted that: when the device is used, the walking mechanism 5 is controlled by the master control box 7 to drive the synthesis reaction barrel 6 to sequentially circulate through the liquid injection mechanism 2, the synthesis mechanism 3 and the cooling mechanism 4, polyether polyol is automatically and sequentially injected into the synthesis reaction barrel 6, then the device is rotated to the synthesis mechanism 3, the temperature is increased to 80-85 ℃, the vacuum pumping is carried out while the nitrogen is blown for dehydration for 2.5 hours, then the device is rotated to the cooling mechanism 4 to be cooled to the normal temperature, after the cooling, the device is rotated again to the liquid injection mechanism 2 to inject MDI-100 and MDI-50, then the device is rotated to the synthesis mechanism 3 to be heated to 60 ℃, the temperature is increased to 80 ℃ for reaction for 2.5 hours, then the device is rotated to the cooling mechanism 4 to be cooled to the normal temperature, after the cooling, the device is rotated again to the liquid injection mechanism 2 to inject PM-200, then the device is rotated to the synthesis mechanism 3 to be heated to 60 ℃, the stirring is carried out for 0.5 hour, and 2 modified MDI with the NCO matrix fraction of about 29% is obtained.

In the embodiment of the present invention, please refer to fig. 1 and fig. 2, the liquid injection mechanism 2 includes a water tank 21, an oil pump 22 and a liquid injection funnel 23, the water tank 21 is divided into four independent chambers by a partition plate, the outer side wall of the water tank 21 is provided with the oil pump 22 corresponding to the four chambers one by one, the oil inlets of the four oil pumps 22 are communicated with the four corresponding chambers respectively, the oil outlets of the four oil pumps 22 pass through the water tank 21 downwards and are communicated with the liquid injection funnel 23, the liquid injection funnel 23 is inserted in the support plate 12, and the liquid outlet faces the lower part of the support plate 12;

it should be noted that: when the liquid injection mechanism 2 is used, in one-time synthesis, four oil pumps 22 of the liquid injection mechanism 2 are respectively started once, the operation is sequentially carried out according to the set raw material proportion and the addition sequence, and the raw materials in four cavities of the water tank 21 are sequentially injected into the synthesis reaction barrel 6 through the liquid injection funnel 23.

In the embodiment: polyether polyol JQN-6034 or JQN-6034D, MDI-100, MDI-50 and PM-200 are respectively injected into four cavities of the water tank 21, the addition sequence is that the travelling mechanism 5 firstly passes through the liquid injection mechanism 2 to inject quantitative polyether polyol JQN-6034 or JQN-6034D, secondly passes through quantitative MDI-100 and MDI-50, and thirdly passes through quantitative PM-200, and the injection amount is controlled by controlling the power and the working time of the oil pump 22.

In the embodiment of the present invention, please refer to fig. 1 and 3, the lifting assembly 31 includes a lead screw 311, a lifting motor 312, a hanging bracket 313 and a threaded sleeve 314, the lead screw 311 is rotatably installed on the second support frame 14, the lifting motor 312 is fixedly installed on the top end of the second support frame 14 for driving the lead screw 311 to rotate, the hanging bracket 313 is slidably installed on the second support frame 14, and the hanging bracket 313 is fixedly installed with the threaded sleeve 314, the threaded sleeve 314 is in threaded connection with the lead screw 311, and the hanging bracket 313 is installed with the heating assembly 32 and the stirring assembly 33.

It should be noted that: when the lifting assembly 31 is used, when the walking mechanism 5 walks to the lower part of the synthesis mechanism 3, the lifting motor 312 is controlled to drive the lead screw 311 to rotate, so that the lead screw 311 drives the threaded sleeve 314 to drive the hanging bracket 313 to move downwards along the direction of the lead screw 311, thereby driving the heating assembly 32 and the stirring assembly 33 to enter the synthesis reaction barrel 6, and heating and stirring are sequentially carried out on the synthesis reaction according to the synthesis process.

In the embodiment of the present invention, please refer to fig. 1, fig. 3 and fig. 4, the heating assembly 32 includes a sealing cover 321, a heating pipe 322, an air inlet cover 323, a heating resistance wire 324, a vacuum pipe 325, a crossover sub 326 and an air nozzle 327, the sealing cover 321 for sealing the synthesis reaction barrel 6 is fixedly mounted at the bottom end of the hanging bracket 313, and the sealing cover 321 is rotatably mounted with the heating pipe 322, the bottom end of the heating pipe 322 is sealed, and the air nozzle 327 connected to the inner cavity of the heating pipe 322 is embedded at the bottom end of the heating pipe 322, the top end of the heating pipe 322 is open, and the top end of the heating pipe 322 upwardly passes through the sealing cover 321 to be rotatably connected with the air inlet cover 323, the air inlet cover 323 is fixedly connected with the hanging bracket 313, and the heating resistance wire 324 is mounted on the air inlet cover 323, the heating end of the heating resistance wire 324 downwardly passes through the air inlet cover 323 to extend into the heating pipe 322, the crossover sub 326 is mounted on the air inlet cover 323, and the vacuum pipe 325 is inserted on the sealing cover 321.

It should be noted that: when the heating component 32 is used, when the sealing cover 321 is used for sealing the synthesis reaction barrel 6, the heating resistance wire 324 is controlled by the master control box 7 to be heated to 85 ℃ when the temperature of polyether polyol JQN-6034 or JQN-6034D is raised for the first time, then the synthesis reaction barrel 6 is vacuumized by the vacuum pipe 325 externally connected with a vacuum pump, then the nitrogen bottle is connected into the synthesis reaction barrel 6 through the conversion joint 326, nitrogen is led into the synthesis reaction barrel 6 through the air inlet cover 323, the heating pipe 322 and the air nozzle 327 in sequence, nitrogen blowing in and vacuum pumping are realized, dehydration on the polyether polyol is realized, and the first heating in the synthesis reaction is completed after 2 and 5 hours of heating; during the second heating, after MDI-100 and MDI-50 are added into the synthesis reaction barrel 6, when the synthesis reaction barrel 6 is tightly covered by the sealing cover 321, the heating resistance wire 324 is controlled by the master control box 7 to be heated to 80 ℃, and the heating time is only 2.5 hours, during the third heating, after MDI-100 and MDI-50 are added into the synthesis reaction barrel 6, when the sealing cover 321 tightly covers the synthesis reaction barrel 6, the heating resistance wire 324 is controlled by the master control box 7 to be heated to 80 ℃ and the heating time is only 2.5 hours, during the third heating, after PM-200 is added into the synthesis reaction barrel 6, when the sealing cover 321 tightly covers the synthesis reaction barrel 6, the heating resistance wire 324 is controlled by the master control box 7 to be heated to 60 ℃, during each heating, the synthesis reaction barrel 6 is stirred by the stirring component 33, and the dehydration and synthesis are accelerated.

In the present embodiment: the heating pipe 322 is inserted into the synthesis reaction barrel 6, and during first synthesis, when nitrogen is blown in, high-temperature gas in the heating pipe 322 is synchronously introduced into the synthesis reaction barrel 6, so that the rapid dehydration of the rapid polyether polyol is facilitated, and the dehydration efficiency is improved.

In the embodiment of the present invention, please refer to fig. 1, fig. 2, fig. 4 and fig. 7, the stirring assembly 33 includes a stirring motor 331, a driving gear 332, a driven gear 333 and a stirring rod 334, the stirring motor 331 is fixedly mounted on the hanging bracket 313, and the driving gear 332 is sleeved on the output shaft of the stirring motor 331, the driven gear 333 is sleeved on the heating pipe 322, and the driven gear 333 is meshed with the driving gear 332, a plurality of stirring rods 334 are uniformly mounted on the side wall of the heating pipe 322 below the sealing cover 321, and the plurality of stirring rods 334 are all inclined downward.

It should be noted that: when the stirring assembly 33 is used, the stirring motor 331 is controlled to be started, the stirring motor 331 drives the driving gear 332 to rotate, the driving gear 332 is meshed with the driven gear 333, so that the driven gear 333 is driven to drive the heating pipe 322 to rotate, and the heating pipe 322 drives the stirring rod 334 to stir the synthesis reaction barrel 6.

In the present embodiment: the stirring rod 334 is arranged obliquely downwards and is polished smooth and not concave, so that after stirring, the stirring rod 334 is pulled upwards to hover above the synthesis reaction barrel 6, and the time is kept for 10-15 min, so that the raw materials stuck on the stirring rod 334 slide to the synthesis reaction barrel 6.

In the embodiment of the utility model, please refer to fig. 1, fig. 2 and fig. 5, cooling body 4 includes hydraulic stem 41, link 42, metal sleeve 43, radiator fan 44, radiator fin 45, connecting rod 46 and temperature sensor 47, hydraulic stem 41 fixed mounting is on the top of support frame three 15, and the flexible end fixedly connected with link 42 of hydraulic stem 41, the bottom fixedly connected with metal sleeve 43 of link 42, and lie in the top of metal sleeve 43 on link 42 and install radiator fan 44, a plurality of radiator fin 45 are evenly installed to the lateral wall of metal sleeve 43, connecting rod 46 is installed to the bottom of link 42, connecting rod 46 passes metal sleeve 43 fixedly connected with temperature sensor 47 downwards

It should be noted that: when cooling body 4 used, need cool off to the normal atmospheric temperature after rising temperature at every turn, running gear 5 rotates synthetic reaction bucket 6 to the 4 stations of cooling body during, hydraulic stem 41 stretches into, thereby drive metal sleeve 43 cover is located on synthetic reaction bucket 6, temperature sensor 47 passes through under connecting rod 46's the drive simultaneously, insert in the synthetic reaction bucket 6, wrap up synthetic reaction bucket 6, then control radiator fan 44 is upwards bloied, the heat conduction of a plurality of radiator fin 45 of rethread, cool off synthetic reaction bucket 6 rapidly, it is the same with the normal atmospheric temperature until temperature sensor 47 detects the temperature, hydraulic stem 41 stretches the shrink, reset, accomplish the cooling operation.

In the present embodiment: the metal sleeve 43 and the heat radiating fins 45 may be made of copper, aluminum or zinc having a good heat conductivity, and heat is conducted by contacting the synthesis reaction barrel 6, and the synthesis reaction barrel 6 may be made of stainless steel.

In the embodiment of the present invention, please refer to fig. 1 and fig. 2, a second cooling fan 8 is further installed on the upper surface of the worktable 1 under the cooling mechanism 4.

It should be noted that: therefore, when the cooling is performed, the second cooling fan 8 is synchronously started to further blow air upwards, and the cooling speed is accelerated.

In the embodiment of the utility model, please refer to fig. 1, fig. 2 and fig. 6, running gear 5 includes rotor plate 51, driving motor 52, drive gear 53, fixed gear 54, mount pad 55, pressure sensor 56, auxiliary stay pole 57 and universal wheel 58, rotor plate 51 rotates and installs on support column 11, and install driving motor 52 on rotor plate 51, the projecting shaft cover of driving motor 52 is equipped with drive gear 53, fixed gear 54 fixed mounting is on support column 11, and fixed gear 54 meshes with drive gear 53, a mount pad 55 fixed mounting for installing synthetic reaction bucket 6 deviates from the one end that support column 11 was deviated from to rotor plate 51, and be equipped with pressure sensor 56 between mount pad 55 and the rotor plate 51, auxiliary stay pole 57 fixed mounting deviates from the bottom of support column 11 one end to rotor plate 51, and universal wheel 58 is installed to auxiliary stay pole 57's bottom.

It should be noted that: when the traveling mechanism 5 is used, the driving motor 52 is controlled to rotate, the driving motor 52 drives the driving gear 53 to rotate, the driving gear 53 is meshed with the fixed gear 54, the rotating plate 51 is driven to rotate along the supporting column 11, the liquid injection mechanism 2, the synthesis mechanism 3 and the cooling mechanism 4 are sequentially switched, during traveling, the auxiliary supporting rod 57 and the universal wheel 58 are used for carrying out auxiliary supporting on movement of the synthesis reaction barrel 6, and shaking during traveling is reduced.

In the present embodiment: the running gear 5 stops at the start and stop of annotating liquid mechanism 2, detect the weight of synthesis reaction bucket 6 through pressure sensor 56, after pouring into the appropriate amount of raw materials, pressure sensor 56 detects that synthesis reaction bucket 6 quality is up to standard, oil pump 22 stops to pour into liquid raw materials, then pause for 2 ~ 5min, make the raw materials in annotating liquid funnel 23 fully fall into synthesis reaction bucket 6, can rotate to synthesis mechanism 3 department, then carry out the synthesis reaction, at the start-stop of synthesis mechanism 3, control through setting for appointed heat-up time, then cooling mechanism 4 department cools off when rotating, at the start-stop of cooling mechanism 4, detect through temperature sensor 47 temperature and control, can when equal with normal atmospheric temperature in synthesis reaction bucket 6.

In the embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 6, a drain pipe 61 is inserted into the bottom end of the synthesis reaction barrel 6, and a control valve 62 is installed at the bottom end of the drain pipe 61 downward through the mounting seat 55 and the rotating plate 51.

It should be noted that: thus, after the final synthesis, the composition in the synthesis reaction tank 6 can be discharged from the drain pipe 61 by opening the control valve 62, and then the next synthesis operation cycle is performed.

The industrial controller is electrically connected with the oil pump 22, the lifting motor 312, the heating resistance wire 324, the stirring motor 331, the hydraulic rod 41, the first cooling fan 44, the temperature sensor 47, the driving motor 52, the pressure sensor 56 and the second cooling fan 8, and the industrial controller is a commonly-used control element in the prior art and controls the oil pump 22, the lifting motor 312, the heating resistance wire 324, the stirring motor 331, the hydraulic rod 41, the first cooling fan 44, the temperature sensor 47, the driving motor 52, the pressure sensor 56 and the second cooling fan 8 to start and stop in sequence through programming instructions, so that the polyether polyol synthesis work is automatically completed.

The utility model provides a modified MDI is with polyether polyol's synthesis automatic control system's theory of operation as follows:

when in use, the method comprises the following specific steps:

1): the driving motor 52 is controlled to rotate through the master control box 7, the driving motor 52 drives the driving gear 53 to rotate, the driving gear 53 is meshed with the fixed gear 54, so that the rotating plate 51 is driven to rotate along the supporting column 11 until the first rotation is carried out to the liquid injection mechanism 2, then the oil pump 22 communicated with the polyether polyol injection chamber is controlled to start, a certain amount of polyether polyol is injected into the synthesis reaction barrel 6 through the liquid injection funnel 23, and then the pause is carried out for 2-5 min;

2): then, the driving motor 52 is controlled to rotate through the master control box 7, the driving motor 52 drives the driving gear 53 to rotate, the driving gear 53 is meshed with the fixed gear 54, the rotating plate 51 is driven to continue to rotate along the supporting column 11 until the rotating plate rotates to the synthesis mechanism 3 for the first time, then, the lifting motor 312 is controlled to drive the lead screw 311 to rotate, the lead screw 311 drives the threaded sleeve 314 to drive the hanging frame 313 to move downwards along the direction of the lead screw 311, so that the sealing cover 321 is driven to tightly cover the synthesis reaction barrel 6, the heating resistance wire 324 is controlled to be heated to 85 ℃ through the master control box 7, then, the synthesis reaction barrel 6 is vacuumized through the vacuum pump externally connected with the vacuum tube 325, then, a nitrogen bottle is connected through the conversion joint 326, nitrogen is led into the synthesis reaction barrel 6 through the air inlet cover 323, the heating tube 322 and the air nozzle 327 in sequence, nitrogen blowing in and exhausting are realized, polyether polyol dehydration is realized, when heating synthesis is carried out, the stirring is synchronously carried out, the heating assembly 33 is controlled, after 2 and 5h, the first heating is completed, then, the heating is carried out, and the first heating is carried out, then, the heating assembly 32 is controlled to be reversely rotated to be withdrawn from the synthesis reaction barrel 6 to reset, and then is carried out for 10-15 min;

3): then, the driving motor 52 is controlled to rotate through the master control box 7, the driving motor 52 drives the driving gear 53 to rotate, the driving gear 53 is meshed with the fixed gear 54, the rotating plate 51 is driven to continue to rotate along the supporting column 11 until the rotating plate rotates to the cooling mechanism 4 for the first time, the master control box 7 controls the hydraulic rod 41 to extend into the hydraulic rod, so that the metal sleeve 43 is driven to be sleeved on the synthesis reaction barrel 6, meanwhile, the temperature sensor 47 is driven by the connecting rod 46 to be inserted into the synthesis reaction barrel 6 to wrap the synthesis reaction barrel 6, then the first cooling fan 44 is controlled to blow air upwards, and then the synthesis reaction barrel 6 is rapidly cooled through heat conduction of the plurality of cooling fins 45 until the temperature sensor 47 detects that the temperature is the same as the normal temperature, the hydraulic rod 41 extends and contracts to reset, cooling operation is completed, and meanwhile, the second cooling fan 8 is synchronously started to further blow air upwards, so that the cooling speed is accelerated;

4): then the walking mechanism 5 is controlled by the master control box 7 to rotate to the liquid injection mechanism 2 for the second time, then an oil pump 22 communicated with the MDI-100 and MDI-50 injection chambers is controlled to start, quantitative MDI-100 and MDI-50 are injected into the synthesis reaction barrel 6 by a liquid injection funnel 23, and then the stop is carried out for 2-5 min;

5): then the walking mechanism 5 is controlled by the master control box 7 to rotate to the synthesis mechanism 3 for the second time, the lifting assembly 31 is used for controlling the heating assembly 32 to extend into the synthesis reaction barrel 6, the temperature is raised to 80 ℃, the temperature is raised for 2.5 hours, the stirring assembly 33 is started to stir synchronously, and then the reset and pause are carried out for 10-15 min;

6): then the traveling mechanism 5 is controlled by the master control box 7 to rotate to the cooling mechanism 4 for the second time, and cooling operation is carried out to normal temperature;

7): then the walking mechanism 5 is controlled by the master control box 7 to rotate to the liquid injection mechanism 2 for the third time, then an oil pump 22 communicated with the cavity filled with the PM-200 is controlled to start, the quantitative PM-200 is injected into the synthesis reaction barrel 6 by the liquid injection funnel 23, and then the time is kept for 2-5 min;

8): then the walking mechanism 5 is controlled by the master control box 7 to rotate to the synthesis mechanism 3 for the third time, the lifting component 31 is used for controlling the heating component 32 to extend into the synthesis reaction barrel 6, the temperature is raised to 60 ℃, the temperature is raised for 2.5 hours, the stirring component 33 is started to synchronously stir, and then the operation is reset and stopped for 10-15 min;

9): after the final synthesis, the composition in the synthesis reaction tank 6 can be discharged from the liquid discharge pipe 61 by opening the control valve 62, and then the next synthesis operation cycle is performed.

The utility model discloses in circuit and control that relate to be prior art, do not carry out too much repeated description here.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (10)

1. An automatic control system for synthesizing polyether polyol for modified MDI comprises:

the device comprises a workbench (1), wherein a support column (11) is arranged in the middle of the upper surface of the workbench (1), a support plate (12) is fixedly arranged at the top end of the support column (11), and a first support frame (13), a second support frame (14) and a third support frame (15) are arranged on the upper surface of the support plate (12);

it is characterized by also comprising:

the liquid injection mechanism (2) is used for injecting raw materials, and the liquid injection mechanism (2) is fixedly arranged on the first support frame (13);

the synthesis mechanism (3) is used for stirring and synthesizing polyether polyol for modified MDI, the synthesis mechanism (3) is fixedly arranged on the second support frame (14), the synthesis mechanism (3) comprises a lifting component (31), a heating component (32) and a stirring component (33), the lifting component (31) is fixedly arranged on the second support frame (14), and the lifting component (31) is provided with the heating component (32) for controlling the synthesis temperature and the stirring component (33) for reacting and mixing;

the cooling mechanism (4) is used for synthesizing the cooling mechanism (4) for cooling and is fixedly arranged on the third support frame (15);

the walking mechanism (5) is used for automatically switching and walking among the liquid injection mechanism (2), the synthesis mechanism (3) and the cooling mechanism (4), the walking mechanism (5) is arranged on the supporting column (11), and the synthesis reaction barrel (6) is arranged on the walking mechanism (5);

and the master control box (7) is used for controlling the automatic synthesis of polyether polyol for modified MDI, and the master control box (7) is arranged in the workbench (1).

2. The system of claim 1, wherein the liquid injection mechanism (2) comprises a water tank (21), an oil pump (22) and a liquid injection funnel (23), the water tank (21) is internally divided into four independent chambers through partition plates, the outer side wall of the water tank (21) is provided with the oil pump (22) corresponding to the four chambers one by one, the oil inlet ends of the oil pump (22) correspond to the four chambers respectively, the oil outlet ends of the four oil pumps (22) downwards penetrate through the water tank (21) and are communicated with the liquid injection funnel (23), the liquid injection funnel (23) is inserted into the support plate (12), and the liquid outlet faces the lower side of the support plate (12).

3. The system for automatically controlling the synthesis of polyether polyol for modified MDI according to claim 1, wherein the lifting component (31) comprises a lead screw (311), a lifting motor (312), a hanging bracket (313) and a threaded sleeve (314), the lead screw (311) is rotatably mounted on the second support frame (14), the lifting motor (312) for driving the lead screw (311) to rotate is fixedly mounted at the top end of the second support frame (14), the hanging bracket (313) is slidably mounted on the second support frame (14), the threaded sleeve (314) is fixedly mounted on the hanging bracket (313), the threaded sleeve (314) is in threaded connection with the lead screw (311), and the hanging bracket (313) is provided with a temperature raising component (32) and a stirring component (33).

4. The automatic control system for synthesizing the polyether polyol for the modified MDI as claimed in claim 3, wherein the temperature rise assembly (32) comprises a sealing cover (321), a heating pipe (322), an air inlet cover (323), a heating resistance wire (324), a vacuum tube (325), a crossover sub (326) and an air nozzle (327), the sealing cover (321) for sealing the synthesis reaction barrel (6) is fixedly installed at the bottom end of the hanger (313), the heating pipe (322) is rotatably installed on the sealing cover (321), the bottom end of the heating pipe (322) is sealed, the air nozzle (327) communicated with the inner cavity of the heating pipe (322) is embedded at the bottom end of the heating pipe (322), the top end of the heating pipe (322) is open, the top end of the heating pipe (322) upwards penetrates through the sealing cover (321) to be rotatably connected with the air inlet cover (323), the air inlet cover (323) is fixedly connected with the hanger (313), the heating cover (323) is installed with the heating nozzle (324), the heating end of the heating pipe (324) downwards penetrates through the air inlet cover (321) to extend into the heating pipe (322), the resistance wire (323) is installed on the air inlet cover (323), and the crossover sub (326) is inserted on the vacuum tube (325).

5. The system for automatically controlling synthesis of polyether polyol for modified MDI according to claim 3, wherein the stirring assembly (33) comprises a stirring motor (331), a driving gear (332), a driven gear (333) and a stirring rod (334), the stirring motor (331) is fixedly installed on the hanger (313), the driving gear (332) is sleeved on an output shaft of the stirring motor (331), the driven gear (333) is sleeved on the heating pipe (322), the driven gear (333) is meshed with the driving gear (332), a plurality of stirring rods (334) are uniformly installed on a side wall of the heating pipe (322) below the sealing cover (321), and a plurality of stirring rods (334) are all arranged in a downward inclined manner.

6. The system for automatically controlling synthesis of polyether polyol for modified MDI according to claim 1, wherein the cooling mechanism (4) comprises a hydraulic rod (41), a connecting frame (42), a metal sleeve (43), a first cooling fan (44), cooling fins (45), a connecting rod (46) and a temperature sensor (47), the hydraulic rod (41) is fixedly mounted at the top end of the support frame III (15), the telescopic end of the hydraulic rod (41) is fixedly connected with the connecting frame (42), the bottom end of the connecting frame (42) is fixedly connected with the metal sleeve (43), the connecting frame (42) is located above the metal sleeve (43) and is provided with the first cooling fan (44), the outer side wall of the metal sleeve (43) is uniformly provided with the plurality of cooling fins (45), the bottom end of the connecting frame (42) is provided with the connecting rod (46), and the connecting rod (46) passes through the metal sleeve (43) and is fixedly connected with the temperature sensor (47) downwards.

7. The automatic control system for synthesizing polyether polyol for modified MDI according to claim 1, wherein a second cooling fan (8) is further installed on the upper surface of the workbench (1) right below the cooling mechanism (4).

8. The system for automatically controlling synthesis of polyether polyol for modified MDI as claimed in claim 1, wherein said traveling mechanism (5) comprises a rotating plate (51), a driving motor (52), a driving gear (53), a fixed gear (54), a mounting seat (55), a pressure sensor (56), an auxiliary support rod (57) and a universal wheel (58), said rotating plate (51) is rotatably mounted on the support column (11), and the rotating plate (51) is provided with the driving motor (52), the projecting shaft sleeve of the driving motor (52) is provided with the driving gear (53), said fixed gear (54) is fixedly mounted on the support column (11), and the fixed gear (54) is meshed with the driving gear (53), said mounting seat (55) for mounting the synthesis reaction barrel (6) is fixedly mounted at the end deviating from the support column (11) of the rotating plate (51), and the pressure sensor (56) is arranged between the mounting seat (55) and the rotating plate (51), said auxiliary support rod (57) is fixedly mounted at the bottom deviating from the end of the support column (11), and the universal wheel (58) is mounted at the bottom end of the auxiliary support rod (57).

9. The automatic synthesis control system for polyether polyol for modified MDI according to claim 8, wherein a drain pipe (61) is inserted into the bottom end of said synthesis reaction barrel (6), and a control valve (62) is installed on the bottom end of said drain pipe (61) passing downward through the installation seat (55) and the rotating plate (51).

10. The system for automatically controlling the synthesis of polyether polyol for modified MDI according to claim 1, wherein an industrial controller is integrated in the master control box (7), and the industrial controller is electrically connected with an oil pump (22), a lifting motor (312), a heating resistance wire (324), a stirring motor (331), a hydraulic rod (41), a first cooling fan (44), a temperature sensor (47), a driving motor (52), a pressure sensor (56) and a second cooling fan (8).

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