Static mixer-based experimental device for improving uniformity of PVB synthesis and method thereof

Abstract

The application discloses a kind of experimental device and method for improving PVB synthesis uniformity based on static mixer, it is related to mixer technical field, including: agitator tank, butyl aldehyde pump is fixedly installed at the top of the agitator tank, hydrochloric acid pump is fixedly installed at the top of the agitator tank, additive pump is fixedly installed at the top of the agitator tank, mixing device, the mixing device is arranged inside the agitator tank, the stirring device includes motor, static mixing equipment, temperature detector, temperature adjusting device, conductivity meter, electric telescopic handle, storage rack, reciprocating screw rod, shear agitator, L-shaped rod, threaded block, U-shaped frame, rack, gear, rotating rod and turnover plate, electric telescopic handle will drive storage rack to move upwards, make solid acid and solution separate, prevent polymerization speed too fast, there is security risk, turnover plate rotation will push the solution precipitated in bottom upwards, prevent solution precipitate in bottom, cause synthesis uniformity reduce, affect reaction effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mixers, in particular to an experimental device for improving the uniformity of PVB synthesis based on a static mixer and a method thereof. BACKGROUND

[0002] The experimental device for improving the uniformity of PVB synthesis of the static mixer mixes the raw materials in the stirring tank and uses the static mixer to mix the raw materials in the stirring tank, improves the stirring and mixing effect of the raw materials, adjusts the suitable temperature required by each reaction stage through the temperature adjusting device, controls the conductivity and pH value in the reaction process through the stepwise acid adding device, and improves the mixing reaction effect.

[0003] The patent with the patent number CN218654490U relates to a mixed stirring reaction kettle, which comprises a reaction kettle body, a connecting block is arranged on the inner top wall of the reaction kettle body, a main helical gear is arranged at the bottom of the connecting block, a slot hole is arranged in the middle of the main helical gear, a motor is arranged at the top of the reaction kettle body, a rotating rod penetrating through the slot hole is arranged at the bottom of the motor, a first connecting plate horizontally arranged is fixedly connected to the bottom of the rotating rod, a movable rod is arranged at the tail end of the first connecting plate, the movable rod is placed at an angle of 45° inside the reaction kettle body, a secondary helical gear meshing with the main helical gear is arranged at the top of the movable rod, and stirring blades are arranged at the tail end of the movable rod. The patent has the advantages of simple structure, reasonable design, and convenient use. The stirring blades arranged in the reaction kettle body can rotate by 360 degrees, and the stirring blades can rotate around the middle and lower ends of the stirring kettle body through the clamping balls, fully and quickly mix the mixed liquid in the reaction kettle, make the reaction more thorough, improve the performance of the reaction kettle, and improve the quality of the output substances.

[0004] In the above-mentioned patent, the stirring blades arranged in the reaction kettle body can rotate by 360 degrees, and the stirring blades can rotate around the middle and lower ends of the stirring kettle body through the clamping balls, fully and quickly mix the mixed liquid in the reaction kettle, make the reaction more thorough, improve the performance of the reaction kettle, and improve the quality of the output substances. However, the raw materials may be deposited at the bottom during the mixing process, which affects the mixing effect of the raw materials and the reaction efficiency. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides an experimental device for improving the uniformity of PVB synthesis based on a static mixer and a method thereof, which solves the problems raised in the above background art.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: a PVB synthesis uniformity improving experimental device based on a static mixer, comprising: a stirring tank, a butyl aldehyde pump is fixedly installed at the top of the stirring tank, a hydrochloric acid pump is fixedly installed at the top of the stirring tank, an additive pump is fixedly installed at the top of the stirring tank, a mixing device is arranged in the stirring tank, the stirring device comprises a motor, a static mixing device, a temperature detector, a temperature adjusting device, an electric conductivity meter, an electric telescopic rod, a storage rack, a reciprocating screw rod, a shearing stirrer, an L-shaped rod, a threaded block, a U-shaped rack, a rack, a gear, a rotating rod and a turnover plate, first, the hydrochloric acid is pumped into the stirring tank and fused with the butyl aldehyde, then the static mixing device is used to mix the raw materials in the stirring tank, the raw material stirring and mixing effect is improved, and the temperature adjusting device is used to adjust the appropriate temperature required by each reaction stage, the motor is fixedly installed at the top of the stirring tank, the static mixing device is fixedly installed at the output end of the motor, the temperature detector is fixedly installed at the top of the stirring tank, the temperature adjusting device is fixedly installed on the surface of the stirring tank, the electric conductivity meter is fixedly installed on the surface of the stirring tank, the electric telescopic rod is fixedly installed on the top of the inner wall of the stirring tank, the storage rack is fixedly installed on the output end of the electric telescopic rod, the reciprocating screw rod is fixedly installed at the bottom of the static mixing device, the shearing stirrer is fixedly installed at the bottom of the reciprocating screw rod, the L-shaped rod is fixedly installed on the inner wall of the stirring tank, the threaded block is screwedly installed on the surface of the reciprocating screw rod, the U-shaped rack is fixedly installed on the surface of the L-shaped rod, the rack is fixedly installed on the surface of the threaded block, the gear is rotatably installed on the surface of the threaded block, the rack and the gear are in surface engagement, the rotating rod is fixedly installed on the surface of the gear, and the turnover plate is fixedly installed on the circumferential surface of the rotating rod. The rotation of the static mixing device drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the shearing stirrer to rotate, and the shearing stirrer rotates to crush the generated polymer.

[0007] According to the above technical scheme, the L-shaped rod penetrates through the surface of the threaded block, and the storage rack is internally provided with solid acid, and the polymer is generated through the solid acid reaction.

[0008] According to the technical scheme, the reciprocating screw rod is provided with the anti-adhesion device for preventing polymer adhesion, the anti-adhesion device is provided with the crushing device, the anti-adhesion device comprises a spiral cylinder, a connecting rod, an elastic telescopic rod, a sliding rail, a sliding block, an elastic telescopic block and a scraper, and the spiral cylinder is pushed to move upwards when the threaded block moves upwards. The spiral cylinder moves upwards and rotates under the guidance of the spiral groove, the spiral cylinder rotates and drives the connecting rod to rotate, the L-shaped rod is provided with the spiral groove on the surface, the spiral cylinder is threadedly installed on the surface of the L-shaped rod, the connecting rod is fixedly installed on the surface of the spiral cylinder, the elastic telescopic rod is fixedly installed at the bottom of the connecting rod, the sliding rail is fixedly installed on the inner wall of the stirring tank, one end of the sliding block is fixedly installed at the free end of the elastic telescopic rod, the other end of the sliding block is slidably installed on the inner wall of the sliding rail, the elastic telescopic block is fixedly installed at the bottom of the sliding block, and the scraper is fixedly installed at the bottom of the elastic telescopic block.

[0009] According to the technical scheme, the scraper is fixedly installed with the semicircular block at the top, the sliding rail is fixedly installed with the pulley frame at the bottom, the scraper rotates and drives the semicircular block to rotate, the semicircular block contacts the pulley frame when rotating, the pulley frame extrudes the semicircular block to move downwards, the semicircular block moves downwards and drives the scraper to move downwards, and the polymer adhered in the scraping process of the scraper reciprocates upwards and downwards and shakes down.

[0010] According to the technical scheme, the threaded block is arranged below the spiral cylinder, the semicircular block is arranged below the pulley frame, and the reset spring is arranged between the sliding block and the sliding rail to drive the sliding block to reset.

[0011] According to the technical scheme, the crushing device comprises a push plate, a sliding ring and a filter plate, the scraper rotates and drives the push plate to rotate, the push plate rotates and pushes the deposited polymer to the middle of the filter plate, the push plate is fixedly installed on the surface of the scraper, the stirring tank is provided with a sliding groove at the bottom, the sliding ring is slidably installed on the inner wall of the sliding groove, and the filter plate is fixedly installed at the top of the sliding ring.

[0012] According to the technical scheme, the filter plate is fixedly installed with a fixed plate at the top, the fixed plate is rotatably installed with a rotating rod on the surface, the rotating rod is fixedly installed with a rotating plate on the surface, and the fixed plate is fixedly installed with a limiting block on the surface. The push plate contacts the rotating plate during the rotating process of the push plate, the rotating plate is limited by the limiting block, the push plate drives the rotating plate to slide upwards during the rotating process of the push plate, the rotating plate slides upwards and drives the fixed plate to move upwards, and the fixed plate moves upwards and drives the filter plate to move upwards.

[0013] According to the technical scheme, the one-way spring is arranged between the sliding ring and the sliding groove to drive the sliding ring to reset, the one-way torsional spring is arranged between the rotating rod and the fixed plate to drive the rotating rod to reset, and the rotating plate contacts the limiting block on the surface.

[0014] A method for using an experimental device for improving the uniformity of PVB synthesis based on a static mixer, comprising the following steps:

[0015] Step one: first, the hydrochloric acid is pumped into the stirring tank and mixed with butyraldehyde, and then the static mixing device is used to mix the raw materials in the stirring tank, thereby improving the mixing effect of the raw materials;

[0016] Step two: adjust the temperature to the appropriate temperature required by each reaction stage by cooperating with the temperature adjusting device, and control the conductivity and pH value in the reaction process through the hydrochloric acid pump and the additive pump, and the conductivity and pH value are displayed on the conductivity meter, and the reaction progress derived from the conductivity is as follows: kt=b(G0-Gt) / cb[(G0-G∞)-(G0-Gt)]= (G0-Gt) / c(G0-G∞);

[0017] Step three: the electric telescopic rod moves downward to drive the storage rack to move downward, the storage rack moves downward to catalyze the solution in the interior, and the catalysis produces a polymerization reaction to generate a polymer, when the reaction is too violent, the electric telescopic rod drives the storage rack to move upward, and the solid acid is separated from the solution, thereby preventing the polymerization speed from being too fast and causing safety hazards;

[0018] Step four: the static mixing device rotates to drive the reciprocating screw rod to rotate, the reciprocating screw rod drives the shearing stirrer to rotate, and the shearing stirrer rotates to crush the generated polymer, when the polymerization speed is too slow, the electric telescopic rod is restarted to drive the solid acid to move downward to react;

[0019] Step five: the reciprocating screw rod rotates to drive the threaded block to move up and down reciprocally, the threaded block moves up and down reciprocally to drive the gear to move up and down reciprocally, the gear moves up and down reciprocally to rotate in the process of moving up and down with the rack, the rack drives the gear to rotate in the process of moving up and down, the gear rotates to drive the rotating rod to rotate, the rotating rod rotates to drive the turnover plate to rotate, and the turnover plate rotates to push the solution deposited at the bottom upward, thereby preventing the solution from being deposited at the bottom and reducing the synthesis uniformity, and affecting the reaction efficiency.

[0020] The application provides an experimental device for improving the uniformity of PVB synthesis based on a static mixer and a method thereof.

[0021] (1) The invention first draws hydrochloric acid into the stirring tank and fuses with butyraldehyde, then uses static mixing equipment to mix the raw materials in the stirring tank, improves the stirring and mixing effect of the raw materials, adjusts to the appropriate temperature required by each reaction stage with a temperature adjusting device, and controls the conductivity and pH value in the reaction process through a hydrochloric acid pump and an additive pump, the storage rack moves downward to catalyze the solution inside with solid acid, the catalysis produces polymerization reaction to produce polymers, when the reaction is too violent, the electric telescopic rod moves the storage rack upward to separate the solid acid from the solution, preventing the polymerization speed from being too fast and causing safety hazards, the rotating rod rotates to drive the turnover plate to rotate, which pushes the solution deposited at the bottom upward to prevent the solution from depositing at the bottom, causing the uniformity of synthesis to decrease and affecting the reaction efficiency.

[0022] (2) The elastic telescopic rod rotates the sliding block, which rotates the elastic telescopic block, which rotates the scraper, which scrapes the bottom of the stirring tank to prevent the generated polymers from adhering to the bottom, causing the shear mixer to be unable to effectively crush the polymers, affecting the mixing efficiency, and at the same time, the pulley frame extrudes the semicircular block to move downward, which moves the scraper downward, and the up-and-down reciprocating movement of the scraper during scraping shakes off the adhering polymers, preventing the polymers from adhering to the scraper and affecting the scraping effect of the scraper.

[0023] (3) The scraper rotates to drive the push plate to rotate, which pushes the deposited polymers to the middle of the filter plate, allowing the shear mixer to effectively crush the polymers and improve the overall crushing effect, and at the same time, the upward movement of the fixed plate drives the filter plate to move upward, which makes the polymers accumulated on the filter plate closer to the shear mixer, allowing the shear mixer to be closer to the polymers and improving the crushing effect, and at the same time, when the scraper drives the push plate to reset, the push plate pushes the rotating plate to rotate upward, preventing the push plate from continuously pushing the rotating plate upward during the resetting process, and the resetting force of the push plate cannot push the rotating plate to slide upward, affecting the normal use of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the invention;

[0025] Figure 2 It is the overall cross-sectional structure diagram of the invention;

[0026] Figure 3 It is the internal structure diagram of the stirring tank of the invention;

[0027] Figure 4 It is the structure diagram of the mixing device of the invention;

[0028] Figure 5 It is the structure diagram of the anti-adhesion device of the invention;

[0029] Figure 6 For the present application Figure 5 A part of the structure of the present application is enlarged and shown schematically.

[0030] Figure 7 For the present application Figure 5 B part of the structure of the present application is enlarged and shown schematically.

[0031] In the figure: 1, stirring tank; 2, butyraldehyde pump; 3, hydrochloric acid pump; 4, auxiliary pump; 5, motor; 6, static mixing device; 7, temperature detector; 8, temperature adjusting device; 9, conductivity meter; 10, electric telescopic rod; 11, storage rack; 12, reciprocating screw rod; 13, shearing stirrer; 14, L-shaped rod; 15, threaded block; 16, U-shaped frame; 17, rack; 18, gear; 19, rotating rod; 20, turnover plate; 211, spiral cylinder; 212, connecting rod; 213, elastic telescopic rod; 214, slide rail; 215, sliding block; 216, elastic telescopic block; 217, scraper; 218, semicircular block; 219, pulley frame; 221, push plate; 222, sliding ring; 223, filter plate; 224, fixed plate; 225, rotating rod; 226, rotating plate; 227, limiting block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0033] Please refer to Figures 1-4One embodiment of the present application is: a static mixer-based experimental device for improving the uniformity of PVB synthesis, comprising: a stirring tank 1, a butyl aldehyde pump 2 fixedly installed on the top of the stirring tank 1, a hydrochloric acid pump 3 fixedly installed on the top of the stirring tank 1, an additive pump 4 fixedly installed on the top of the stirring tank 1, a mixing device, the mixing device being arranged inside the stirring tank 1, the stirring device comprising a motor 5, a static mixing device 6, a temperature detector 7, a temperature adjusting device 8, an electric conductivity instrument 9, an electric telescopic rod 10, a storage rack 11, a reciprocating screw rod 12, a shearing stirrer 13, an L-shaped rod 14, a threaded block 15, a U-shaped rack 16, a rack 17, a gear 18, a rotating rod 19 and a turnover plate 20, when the reaction is too violent, the electric telescopic rod 10 drives the storage rack 11 to move upwards, so that the solid acid is separated from the solution, preventing the polymerization speed from being too fast and causing safety hazards, the motor 5 is fixedly installed on the top of the stirring tank 1, the static mixing device 6 is fixedly installed on the output end of the motor 5, 500 static mixers are arranged in the static mixing device 6, the temperature detector 7 is fixedly installed on the top of the stirring tank 1, the temperature adjusting device 8 is fixedly installed on the surface of the stirring tank 1, the electric conductivity instrument 9 is fixedly installed on the surface of the stirring tank 1, the electric telescopic rod 10 is fixedly installed on the top of the inner wall of the stirring tank 1, the storage rack 11 is fixedly installed on the output end of the electric telescopic rod 10, the reciprocating screw rod 12 is fixedly installed on the bottom of the static mixing device 6, the shearing stirrer 13 is fixedly installed on the bottom of the reciprocating screw rod 12, the L-shaped rod 14 is fixedly installed on the inner wall of the stirring tank 1, the threaded block 15 is screwedly installed on the surface of the reciprocating screw rod 12, the U-shaped rack 16 is fixedly installed on the surface of the L-shaped rod 14, the rack 17 is fixedly installed on the surface of the threaded block 15, the gear 18 is rotatably installed on the surface of the threaded block 15, the surface of the rack 17 and the gear 18 is engaged, the rotating rod 19 is fixedly installed on the surface of the gear 18, and the turnover plate 20 is fixedly installed on the circumferential surface of the rotating rod 19. The rotation of the turnover plate 20 pushes the solution deposited at the bottom upwards, preventing the solution from depositing at the bottom and causing the synthesis uniformity to decrease and affecting the reaction efficiency.

[0034] The L-shaped rod 14 penetrates the surface of the threaded block 15, the storage rack 11 is internally provided with solid acid, and the polymer is generated by the reaction of the solid acid.

[0035] A use method of a static mixer-based experimental device for improving the uniformity of PVB synthesis, comprising the following steps:

[0036] Step one: first, hydrochloric acid is pumped into the stirring tank 1 and fused with butyl aldehyde, and then the static mixing device 6 is used to mix the raw materials in the stirring tank 1, improving the stirring and mixing effect of the raw materials;

[0037] Step two: adjust the temperature to the appropriate temperature required by the reaction stage with temperature adjustment device 8, and control the conductivity and pH value in the reaction process through hydrochloric acid pump 3 and auxiliary pump 4, the conductivity and pH value are displayed on conductivity meter 9, and the reaction progress derived from the conductivity is as follows: kt=b(G0-Gt) / cb[(G0-G∞)-(G0-Gt)]= (G0-Gt) / c(G0-G∞);

[0038] Step three: the electric telescopic rod 10 moves downward to drive the storage rack 11 to move downward, the storage rack 11 moves downward to catalyze the solution inside the solid acid, and the catalysis produces a polymerization reaction to produce a polymer, when the reaction is too violent, the electric telescopic rod 10 drives the storage rack 11 to move upward, the solid acid is separated from the solution, and the polymerization speed is prevented from being too fast, which exists a safety hazard;

[0039] Step four: the static mixing device 6 rotates to drive the reciprocating screw rod 12 to rotate, the reciprocating screw rod 12 drives the shearing stirrer 13 to rotate, and the shearing stirrer 13 rotates to crush the generated polymer, when the polymerization speed is too slow, the electric telescopic rod 10 is restarted to drive the solid acid to move downward to react;

[0040] Step five: the reciprocating screw rod 12 rotates to drive the threaded block 15 to move up and down reciprocally, the threaded block 15 moves up and down reciprocally to drive the gear 18 to move up and down reciprocally, the gear 18 moves up and down reciprocally to contact the rack 17, the rack 17 drives the gear 18 to rotate during the up and down movement, the gear 18 rotates to drive the rotating rod 19 to rotate, the rotating rod 19 rotates to drive the turnover plate 20 to rotate, the turnover plate 20 rotates to push the solution precipitated at the bottom upward, preventing the solution from precipitating at the bottom, which reduces the uniformity of synthesis and affects the reaction efficiency.

[0041] In the working of the embodiment, first, hydrochloric acid is pumped into the stirring tank 1 and mixed with butyraldehyde, then the static mixing device 6 is used to mix the raw materials in the stirring tank 1, the mixing effect of the raw materials is improved, the temperature adjusting device 8 is adjusted to the appropriate temperature required by each reaction stage, and the conductivity and pH value in the reaction process are controlled by the hydrochloric acid pump 3 and the additive pump 4, the conductivity and pH value are displayed on the conductivity meter 9, at the same time, the electric telescopic rod 10 is started to move downward, the electric telescopic rod 10 moving downward drives the storage rack 11 to move downward, the storage rack 11 moving downward catalyzes the solution inside, the catalysis produces a polymerization reaction, and the polymer is produced, when the reaction is too violent, the electric telescopic rod 10 drives the storage rack 11 to move upward, so that the solid acid is separated from the solution, preventing the polymerization speed from being too fast and causing safety hazards, at the same time, the rotation of the static mixing device 6 drives the reciprocating screw rod 12 to rotate, the rotation of the reciprocating screw rod 12 drives the shearing stirrer 13 to rotate, the rotation of the shearing stirrer 13 pulverizes the generated polymer, when the polymerization speed is too slow, the electric telescopic rod 10 is restarted to drive the solid acid to move downward for reaction, at the same time, the rotation of the reciprocating screw rod 12 drives the threaded block 15 to move up and down reciprocally, the up and down reciprocating movement of the threaded block 15 drives the gear 18 to move up and down reciprocally, the up and down reciprocating movement of the gear 18 drives the rotating rod 19 to rotate, the rotation of the rotating rod 19 drives the turnover plate 20 to rotate, the rotation of the turnover plate 20 pushes the solution precipitated at the bottom upward, preventing the solution from precipitating at the bottom and reducing the uniformity of synthesis and affecting the reaction efficiency.

[0042] Please refer to Figures 1-7 , on the basis of the above embodiment, in another embodiment of the application, the reciprocating screw rod 12 is provided with a polymer adhesion prevention device, the polymer adhesion prevention device is provided with a pulverizing device, the polymer adhesion prevention device comprises a spiral cylinder 211, a connecting rod 212, an elastic telescopic rod 213, a sliding rail 214, a sliding block 215, an elastic telescopic block 216 and a scraper 217, the L-shaped rod 14 is provided with a spiral groove on the surface, the spiral cylinder 211 is threadedly installed on the surface of the L-shaped rod 14, the connecting rod 212 is fixedly installed on the surface of the spiral cylinder 211, the elastic telescopic rod 213 is fixedly installed at the bottom of the connecting rod 212, the sliding rail 214 is fixedly installed on the inner wall of the stirring tank 1, one end of the sliding block 215 is fixedly installed on the free end of the elastic telescopic rod 213, the other end of the sliding block 215 is slidably installed on the inner wall of the sliding rail 214, the elastic telescopic block 216 is fixedly installed at the bottom of the sliding block 215, and the scraper 217 is fixedly installed at the bottom of the elastic telescopic block 216. The bottom of the stirring tank 1 is scraped by the rotation of the scraper 217, preventing the generated polymer from adhering to the bottom, so that the shearing stirrer 13 cannot effectively pulverize the polymer, and the mixing efficiency is affected.

[0043] The top of the scraper 217 is fixedly provided with a semicircular block 218, and the bottom of the sliding rail 214 is fixedly provided with a pulley frame 219, so as to prevent the polymer from adhering to the scraper 217 and affecting the scraping effect of the scraper 217.

[0044] The threaded block 15 is arranged below the spiral cylinder 211, the semicircular block 218 is arranged below the pulley frame 219, and the sliding block 215 is arranged between the sliding rail 214 and the reset spring, so as to drive the sliding block 215 to reset through the reset spring.

[0045] The pulverizing device comprises a push plate 221, a sliding ring 222 and a filter plate 223. The push plate 221 is fixedly arranged on the surface of the scraper 217. The sliding ring 222 is slidingly arranged on the inner wall of the chute. The filter plate 223 is fixedly arranged on the top of the sliding ring 222, so that the shearing stirrer 13 can effectively pulverize the polymer and improve the overall pulverizing effect.

[0046] The top of the filter plate 223 is fixedly provided with a fixed plate 224. The surface of the fixed plate 224 is rotatably provided with a rotating rod 225. The surface of the rotating rod 225 is fixedly provided with a rotating plate 226. The surface of the fixed plate 224 is fixedly provided with a limiting block 227, so that the shearing stirrer 13 is more close to the polymer and the pulverizing effect is improved.

[0047] A first spring is arranged between the sliding ring 222 and the chute, so as to drive the sliding ring 222 to reset. A first torsional spring is arranged between the rotating rod 225 and the fixed plate 224, so as to drive the rotating rod 225 to reset. The surface of the rotating plate 226 is in contact with the limiting block 227.

[0048] When the threaded block 15 moves upward, the spiral cylinder 211 is pushed to move upward. The spiral cylinder 211 moves upward under the guidance of the spiral groove and rotates. The spiral cylinder 211 rotates to drive the connecting rod 212 to rotate. The connecting rod 212 rotates to drive the elastic telescopic rod 213 to rotate. The elastic telescopic rod 213 rotates to drive the sliding block 215 to rotate. The sliding block 215 rotates to drive the elastic telescopic block 216 to rotate. The elastic telescopic block 216 rotates to drive the scraper 217 to rotate. The scraper 217 rotates to scrape the bottom of the stirring tank 1, so as to prevent the generated polymer from adhering to the bottom, so that the shearing stirrer 13 cannot effectively pulverize the polymer and affects the mixing efficiency. Meanwhile, the scraper 217 rotates to drive the semicircular block 218 to rotate. The semicircular block 218 rotates to contact the pulley frame 219. The pulley frame 219 extrudes the semicircular block 218 to move downward. The semicircular block 218 moves downward to drive the scraper 217 to move downward. The polymer adhering to the scraper 217 is shaken down during the up-and-down reciprocating movement of the scraper 217 during the scraping process, so as to prevent the polymer from adhering to the scraper 217 and affecting the scraping effect of the scraper 217.

[0049] The scraping plate 217 rotates to drive the pushing plate 221 to rotate, and the pushing plate 221 rotates to push the precipitated polymer to the middle of the filter plate 223, so that the shearing stirrer 13 can effectively crush the polymer, and the overall crushing effect is improved. At the same time, the pushing plate 221 will contact the rotating plate 226 during rotation, and the rotating plate 226 is limited by the limiting block 227, so that the pushing plate 221 drives the rotating plate 226 to slide upward during rotation. The rotating plate 226 slides upward to drive the fixed plate 224 to move upward, and the fixed plate 224 moves upward to drive the filter plate 223 to move upward, so that the polymer accumulated on the filter plate 223 is closer to the shearing stirrer 13, and the shearing stirrer 13 is closer to the polymer, thereby improving the crushing effect. At the same time, when the scraping plate 217 drives the pushing plate 221 to reset, the pushing plate 221 will push the rotating plate 226 to rotate upward, preventing the pushing plate 221 from continuously pushing the rotating plate 226 to slide upward during resetting. The resetting force of the pushing plate 221 cannot push the rotating plate 226 to slide upward, which affects the normal use of the equipment.

[0050] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An experimental set-up for PVB synthesis homogeneity enhancement based on static mixer, characterized by, Include: The stirring tank (1) top fixed installation has butyl aldehyde pump (2), the stirring tank (1) top fixed installation has hydrochloric acid pump (3), the stirring tank (1) top fixed installation has auxiliary pump (4); Mixing device, the mixing device is arranged in the stirring tank (1) inside, the mixing device includes motor (5), static mixing equipment (6), temperature detector (7), temperature regulating device (8), electric conductivity instrument (9), electric telescopic rod (10), storage rack (11), reciprocating screw rod (12), shear agitator (13), L-shaped rod (14), threaded block (15), U-shaped frame (16), rack (17), gear (18), rotating rod (19) and turnover plate (20), the motor (5) fixed installation is in the stirring tank (1) top, the static mixing equipment (6) fixed installation is in the motor (5) output, the temperature detector (7) fixed installation is in the stirring tank (1) top, the temperature regulating device (8) fixed installation is in the stirring tank (1) surface, the electric conductivity instrument (9) fixed installation is in the stirring tank (1) surface, the electric telescopic rod (10) fixed installation is in the stirring tank (1) inner wall top, the storage rack (11) fixed installation is in the electric telescopic rod (10) output, the reciprocating screw rod (12) fixed installation is in the static mixing equipment (6) bottom, the shear agitator (13) fixed installation is in the reciprocating screw rod (12) bottom, the L-shaped rod (14) fixed installation is in the stirring tank (1) inner wall, the threaded block (15) is screw mounted in the reciprocating screw rod (12) surface, the U-shaped frame (16) fixed installation is in the L-shaped rod (14) surface, the rack (17) fixed installation is in the threaded block (15) surface, the gear (18) rotationally installed in the threaded block (15) surface, the rack (17) and the gear (18) surface engagement, the rotating rod (19) fixed installation is in the gear (18) surface, the turnover plate (20) fixed installation is in the rotating rod (19) circumference surface; Wherein, the reciprocating screw rod (12) is provided with the anti-adhesion device that prevents polymer from adhering, the anti-adhesion device is provided with a crushing device; The anti-staining device comprises a spiral cylinder (211), a connecting rod (212), an elastic telescopic rod (213), a sliding rail (214), a sliding block (215), an elastic telescopic block (216) and a scraper (217), a spiral groove is formed in the surface of the L-shaped rod (14), the spiral cylinder (211) is threadedly installed on the surface of the L-shaped rod (14), the connecting rod (212) is fixedly installed on the surface of the spiral cylinder (211), the elastic telescopic rod (213) is fixedly installed at the bottom of the connecting rod (212), the sliding rail (214) is fixedly installed on the inner wall of the stirring tank (1), one end of the sliding block (215) is fixedly installed on the free end of the elastic telescopic rod (213), the other end of the sliding block (215) is slidingly installed on the inner wall of the sliding rail (214), the elastic telescopic block (216) is fixedly installed at the bottom of the sliding block (215), and the scraper (217) is fixedly installed at the bottom of the elastic telescopic block (216). A semicircular block (218) is fixedly installed on the top of the scraper (217), and a pulley frame (219) is fixedly installed at the bottom of the sliding rail (214). The L-shaped rod (14) penetrates through the surface of the threaded block (15), and the storage rack (11) is internally provided with solid acid. The threaded block (15) is arranged below the spiral cylinder (211), the semicircular block (218) is arranged below the pulley frame (219), and a return spring is arranged between the sliding block (215) and the sliding rail (214). The crushing device comprises a push plate (221), a sliding ring (222) and a filter plate (223), the push plate (221) is fixedly installed on the surface of the scraper (217), a sliding groove is formed in the bottom of the stirring tank (1), the sliding ring (222) is slidingly installed on the inner wall of the sliding groove, and the filter plate (223) is fixedly installed on the top of the sliding ring (222).

2. The experimental setup for PVB synthetic uniformity enhancement based on static mixer as claimed in claim 1, wherein: A fixed plate (224) is fixedly installed on the top of the filter plate (223), a rotating rod (225) is rotatably installed on the surface of the fixed plate (224), a rotating plate (226) is fixedly installed on the surface of the rotating rod (225), and a limiting block (227) is fixedly installed on the surface of the fixed plate (224).

3. The experimental setup for PVB synthetic uniformity enhancement based on static mixer as claimed in claim 2, wherein: A first spring is arranged between the sliding ring (222) and the sliding groove, a first torsional spring is arranged between the rotating rod (225) and the fixed plate (224), and the rotating plate (226) is in surface contact with the limiting block (227).

4. A method of using an experimental device for improving the uniformity of PVB synthesis based on static mixers, using the experimental device for improving the uniformity of PVB synthesis based on static mixers according to claim 3, characterized in that, The method comprises the following steps: Step one: firstly, hydrochloric acid is drawn into the stirring tank (1) and fused with butyraldehyde, and then a static mixing device (6) is used to mix the raw materials in the stirring tank (1), so that the raw material stirring and mixing effect is improved; Step two: the temperature adjusting device (8) is used to adjust the suitable temperature required in each reaction stage, and the conductivity and pH value in the reaction process are controlled through the hydrochloric acid pump (3) and the additive pump (4), and the conductivity and pH value are displayed on the conductivity meter (9), and the reaction progress deduced according to the conductivity is as follows: kt=b(G0-Gt) / cb[(G0-G∞)-(G0-Gt)]= (G0-Gt) / c(G0-G∞). Step three: the electric telescopic rod (10) moves down to drive the storage rack (11) to move down, the storage rack (11) moves down to catalyze the solution in the inside, catalyze the polymerization reaction, produce the polymer, when the reaction is too intense, the electric telescopic rod (10) drives the storage rack (11) to move up, the solid acid is separated from the solution, prevents the polymerization speed from being too fast, there is a security risk; Step four: the static mixing device (6) rotates to drive the reciprocating screw rod (12) to rotate, the reciprocating screw rod (12) rotates to drive the shearing stirrer (13) to rotate, the shearing stirrer (13) rotates to crush the generated polymer, when the polymerization speed is too slow, the electric telescopic rod (10) is restarted to drive the solid acid to move down to react; Step five: the reciprocating screw rod (12) rotates to drive the threaded block (15) to move up and down reciprocally, the threaded block (15) moves up and down reciprocally to drive the gear (18) to move up and down reciprocally, the gear (18) moves up and down reciprocally to contact the rack (17), the rack (17) drives the gear (18) to rotate in the process of moving up and down, the gear (18) rotates to drive the rotating rod (19) to rotate, the rotating rod (19) rotates to drive the turnover plate (20) to rotate, the turnover plate (20) rotates to push the solution deposited at the bottom up, prevents the solution from being deposited at the bottom, causes the synthesis uniformity to reduce, influences the reaction efficiency.

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