CN115228405A - Preparation system and preparation method of polyvinyl chloride resin - Google Patents
Preparation system and preparation method of polyvinyl chloride resin Download PDFInfo
- Publication number
- CN115228405A CN115228405A CN202210851314.7A CN202210851314A CN115228405A CN 115228405 A CN115228405 A CN 115228405A CN 202210851314 A CN202210851314 A CN 202210851314A CN 115228405 A CN115228405 A CN 115228405A
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- rod
- shaft
- reaction kettle
- rotating
- polyvinyl chloride
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 42
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 41
- 239000011347 resin Substances 0.000 title claims abstract description 39
- 229920005989 resin Polymers 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 93
- 229920000642 polymer Polymers 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 39
- 238000007790 scraping Methods 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 14
- 210000000078 claw Anatomy 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 4
- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F14/02—Monomers containing chlorine
- C08F14/04—Monomers containing two carbon atoms
- C08F14/06—Vinyl chloride
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
Abstract
The invention discloses a preparation system and a preparation method of polyvinyl chloride resin, wherein the preparation system of the polyvinyl chloride resin comprises a reaction kettle, the upper end of the reaction kettle is provided with an inlet, the lower end of the reaction kettle is provided with an outlet, a vertically arranged shaft lever is rotationally connected in the reaction kettle, a stirring rod is fixedly arranged on the outer side of the shaft lever extending into the reaction kettle, a radial rod is arranged on the outer side of the shaft lever, one end of the radial rod, far away from the shaft lever, is rotationally connected with a rotating rod, and the rotating rod is parallel to the shaft lever; the rotating rod is provided with a knocking component and a scraping plate component, the knocking component is used for knocking the inner wall of the reaction kettle, so that small-particle polymers slide to the bottom along the inner wall of the reaction kettle, and the scraping plate component is used for scraping off a polymer layer on the inner wall of the reaction kettle; the shaft lever is provided with a transmission assembly, and the radial lever is provided with a switching assembly; this preparation system of polyvinyl chloride resin, it is simple structure not only, can realize the preparation of polyvinyl chloride resin high-efficiently moreover.
Description
Technical Field
The invention relates to the technical field of polyvinyl chloride resin, in particular to a preparation system and a preparation method of polyvinyl chloride resin.
Background
Polyvinyl chloride (PVC) is a polymer obtained by polymerizing vinyl chloride monomers under the action of initiators such as peroxides and azo compounds or under the action of light and heat according to a free radical polymerization reaction mechanism. Polyvinyl chloride homopolymers and polyvinyl chloride copolymers are collectively referred to as polyvinyl chloride resins. In recent years, as social construction progresses, the amount of polyvinyl chloride resin used becomes larger and larger, but in the preparation of polyvinyl chloride resin, the following problems often occur:
1. in the prior art, when polyvinyl chloride resin is prepared, monomers, water, an initiator and a dispersing agent are required to be added into a reaction kettle respectively, and stirring is carried out through a stirring mechanism so as to prepare the polyvinyl chloride resin, but in the stirring process, polymer particles are easy to stick on the inner wall because a stirring rod pushes the polymer particles onto the inner wall of the reaction kettle when rotating, and a polymer layer is formed on the inner wall when the reaction kettle works for a long time, so that the heat conduction effect of the reaction kettle is influenced;
2. in the prior art, if a polymer layer adhered to the inner wall of the reaction kettle is scraped by using a cleaning mechanism, the massive polymer adhered to the scraper is difficult to be completely plasticized, and the quality of the polyvinyl chloride resin is influenced.
Disclosure of Invention
The invention aims to provide a polyvinyl chloride resin preparation system which is simple in structure and can efficiently realize preparation of polyvinyl chloride resin.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation system of polyvinyl chloride resin comprises a reaction kettle, wherein an inlet is formed in the upper end of the reaction kettle, an outlet is formed in the lower end of the reaction kettle, a vertically arranged shaft lever is rotationally connected in the reaction kettle, a stirring rod is fixedly arranged on the outer side of the shaft lever, which extends into the reaction kettle, a radial lever is arranged on the outer side of the shaft lever, one end, far away from the shaft lever, of the radial lever is rotationally connected with a rotating lever, and the rotating lever is parallel to the shaft lever; the rotating rod is provided with a knocking component and a scraper component, the knocking component is used for knocking the inner wall of the reaction kettle so that small-particle polymers slide to the bottom along the inner wall of the reaction kettle, and the scraper component is used for scraping off a polymer layer on the inner wall of the reaction kettle; the automatic scraper device is characterized in that a transmission assembly is arranged on the shaft rod, a switching assembly is arranged on the radial rod, when the switching assembly is located at a first position, the knocking assembly is close to the inner side wall of the reaction kettle, the shaft rod drives the knocking assembly to knock the inner wall of the reaction kettle through the transmission assembly, when the switching assembly is located at a second position, the scraper assembly is attached to the inner wall of the reaction kettle, and the shaft rod drives the scraper assembly to scrape the inner wall of the reaction kettle through the radial rod.
Furthermore, a motor frame is fixedly arranged at the upper end of the reaction kettle, and a first motor used for driving the shaft lever to rotate is fixedly arranged at the upper end of the motor frame.
Furthermore, the switching component comprises a first electric push rod, a first rotary disc is arranged at the upper end of the rotating rod, the first electric push rod is fixedly installed on the radial rod along the length direction of the radial rod, a push plate is fixedly arranged at the telescopic end of the first electric push rod, a notch is formed in the push plate along the direction perpendicular to the length direction of the first electric push rod, and a convex column extending into the notch is arranged at the eccentric position of the first rotary disc; when the first electric push rod is completely contracted, the first rotary disc drives the rotary rod to rotate to the first position, and when the first electric push rod is completely extended out, the first rotary disc drives the rotary rod to rotate 180 degrees to the second position.
Further, the transmission assembly comprises a first bevel gear, a convex sleeve sleeved on the outer side of the shaft rod is arranged at the top of the inner wall of the reaction kettle, and the first bevel gear is fixedly installed on the outer side of the convex sleeve; a second bevel gear is rotatably connected to the shaft lever below the radial lever, a third bevel gear is rotatably connected to the outer side of the shaft lever between the first bevel gear and the second bevel gear, and the third bevel gear is meshed with the first bevel gear and the second bevel gear; a first rotating shaft arranged along the radial direction of the shaft lever is rotatably connected to the radial lever, a fourth bevel gear meshed with the second bevel gear is fixedly arranged at one end, close to the shaft lever, of the first rotating shaft, and a clamping plate is arranged at one end, far away from the shaft lever, of the first rotating shaft; the rotating speed ratio of the second bevel gear to the fourth bevel gear is 1:3.
Further, the knocking assembly comprises a second rotating shaft which is rotatably connected in the rotating rod and is arranged along the axial direction of the radial rod; a second rotating disc is fixedly arranged at one end of the second rotating shaft, a rotating block is fixedly arranged at the other end of the second rotating shaft, a clamping groove is formed in the rotating block, and an annular convex edge is arranged on the inner side wall of the reaction kettle; when the rotating rod rotates to the first position, the clamping plate extends into the clamping groove, the first rotating shaft is connected with the second rotating shaft, and the first rotating shaft drives the second rotating shaft to rotate; when the rotating rod rotates to the second position, the annular convex edge extends into the clamping groove, the first rotating shaft is separated from the second rotating shaft, and the second rotating shaft does not rotate when the shaft rod rotates; a plurality of convex rods are arranged on the outer side of the rotating rod, slide rods are connected in the convex rods in a sliding manner along the axial direction of the rotating rod, a connecting rod is hinged at the eccentric position of the second turntable, the other end of the connecting rod is hinged with the upper end of each slide rod, and the slide rods are driven to reciprocate up and down through the connecting rods when the second turntable rotates; the tip of every nose bar all articulates there is the rapping bar, is equipped with the trace between a plurality of rapping bars, fixes being equipped with the torsional spring that is used for forcing the rapping bar upset on one of them nose bar, be equipped with on the slide bar and stir the subassembly, when the reciprocating motion that makes progress of slide bar, stir the subassembly and stir rapping bar reciprocating rotation with the torsional spring cooperation.
Furthermore, the shifting assembly comprises a shifting claw, a mounting groove is formed in the outer side of the sliding rod, the shifting claw is arranged in the mounting groove, an elastic sheet used for forcing the shifting claw to extend out of the mounting groove is arranged in the mounting groove, a shifting block is arranged on a knocking rod connected with the torsional spring, when the sliding rod moves upwards, the shifting block is abutted to the shifting claw, and the shifting claw is screwed into the mounting groove; when the sliding rod descends, the pusher dog pushes the knocking rod to overcome the rotation of the torsion spring in a propping mode on the pusher block, and when the pusher dog is separated from the pusher block, the knocking rod resets under the action of the torsion spring.
Further, the scraper component comprises an upper belt wheel fixedly arranged on the second rotating shaft, an upper convex shaft is arranged on the outer side of the rotating rod, a lower belt wheel is rotatably connected to the upper convex shaft, and a transmission belt is arranged between the upper belt wheel and the lower belt wheel; a plurality of lower convex shafts are arranged below the upper convex shaft in parallel and downwards on the outer side of the rotating rod, a first gear coaxial with the lower belt wheel is rotatably connected to the upper convex shaft, the first gear is fixedly connected with the lower belt wheel, a second gear is rotatably connected to each lower convex shaft, the plurality of second gears are sequentially meshed from top to bottom, and the first gear is meshed with the uppermost second gear; a third gear is fixedly arranged at the end part of each lower convex shaft, a third rotating shaft parallel to the lower convex shaft is rotatably connected at the eccentric position of each second gear, a scraping plate is arranged at the end part of each third rotating shaft, and a fourth gear meshed with the third gear is fixedly arranged on each third rotating shaft; when the annular convex edge stretches into the clamping groove, the scraping plates are spliced to form the scraping plates attached to the inner wall of the reaction kettle.
The invention also discloses a method for preparing polyvinyl chloride resin by using the preparation system of polyvinyl chloride resin, which comprises the following steps:
s1, adding a monomer, water, an initiator and a dispersing agent into a reaction kettle from inlets respectively;
s2, controlling the rotating rod to be at a first position through the switching assembly, then controlling the shaft rod to rotate, driving the stirring rod to rotate by the shaft rod, stirring the raw materials in the reaction kettle, heating the reaction kettle, and performing a plasticizing reaction to form small polymer particles; meanwhile, the shaft lever controls the knocking component to knock the inner wall of the reaction kettle through the transmission component, so that small-particle polymers slide down to the bottom and are plasticized under the action of the stirring rod to prepare polyvinyl chloride resin;
s3, after the stirring rod stirs for a set time, controlling the shaft lever to stop rotating, then controlling the rotating lever to rotate to a second position through the switching assembly, enabling the scraper component to be in contact with the inner wall of the reaction kettle, then controlling the shaft lever to rotate, driving the scraper component to scrape the polymer layer on the inner wall of the reaction kettle by the shaft lever, keeping the heat conduction effect of the reaction kettle, and forming a large polymer to be adhered on the scraper component after the polymer layer is scraped;
s4, controlling the shaft lever to stop rotating, controlling the rotating lever to rotate to a first position through the switching assembly, controlling the shaft lever to rotate, controlling the scraper blade assembly to rotate through the transmission assembly by the shaft lever, further enabling a large polymer adhered on the scraper blade assembly to be contacted with other raw materials, plasticizing the components of the large polymer, and controlling the shaft lever to stop rotating after the reaction is set for time so as to complete full reaction;
and S5, discharging the prepared polyvinyl chloride resin out of the reaction kettle through an outlet to finish blanking collection.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. when the stirring rod is used for stirring, the sliding rod is controlled to drive the pusher dog to reciprocate, so that the torsion spring is overcome to drive the knocking rod to rotate, the inner wall of the reaction kettle is knocked, the inner wall is vibrated, and polymer particles are not easily adhered to the inner wall due to vibration of the inner wall when the stirring rod pushes the polymer particles on the inner wall, so that a polymer layer on the inner wall is slowed down;
2. according to the invention, the scraping plates are driven to rotate around the stirring shaft when the stirring rod rotates by using the plurality of scraping plates, so that the polymer layer on the inner wall is scraped off and is bonded to form a large polymer, and the heat pouring effect of the reaction kettle is ensured;
3. according to the invention, through gear transmission, when the stirring rod rotates, the scraping plate is driven to rotate around the lower convex shaft, so that the scraping plate can rotate, and then a large block of polymer bonded on the scraping plate can be fully plasticized, and finally polyvinyl chloride resin is prepared, and the quality of the polyvinyl chloride resin is ensured.
4. According to the invention, the first electric push rod is used for controlling the rotating rod to rotate, when the rotating rod is located at the first position, the knocking component is matched with the inner wall, the scraping plate rotates while the knocking rod is driven to work due to gear transmission, and after the first electric push rod drives the rotating rod to rotate 180 degrees to the second position, the scraping plate is matched with the inner wall at the moment, so that the inner wall can be scraped, the knocking mechanism does not work, the control is simple, and the functions are various.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of the rapper assembly of the present invention in operation;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged view taken at I of FIG. 1 according to the present invention;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5 in accordance with the present invention;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 5 in accordance with the present invention;
FIG. 8 is an enlarged view taken at II of FIG. 1 in accordance with the present invention;
FIG. 9 is an enlarged view of FIG. 3 taken at III.
Detailed Description
Referring to fig. 1-9, a polyvinyl chloride resin preparation system includes a reaction kettle 1, an inlet 1a is provided at an upper end of the reaction kettle 1, an outlet 1b is provided at a lower end of the reaction kettle 1, a vertically arranged shaft rod 31 is rotatably connected to the reaction kettle 1, a stirring rod 32 is fixedly provided at an outer side of the shaft rod 31 extending into the reaction kettle 1, a radial rod 301 is provided at an outer side of the shaft rod 31, a rotating rod 51 is rotatably connected to an end of the radial rod 301 far away from the shaft rod 31, and the rotating rod 51 and the shaft rod 31 are parallel to each other; the rotating rod 51 is provided with a knocking component and a scraper component, the knocking component is used for knocking the inner wall of the reaction kettle 1 so that small-particle polymers slide to the bottom along the inner wall of the reaction kettle 1, and the scraper component is used for scraping off a polymer layer on the inner wall of the reaction kettle 1; the improved reactor is characterized in that a transmission assembly is arranged on the shaft rod 31, a switching assembly is arranged on the radial rod 301, when the switching assembly is located at a first position, the knocking assembly is close to the inner side wall of the reactor 1, the shaft rod 31 drives the knocking assembly to knock the inner wall of the reactor 1 through the transmission assembly, when the switching assembly is located at a second position, the scraper assembly is attached to the inner wall of the reactor 1, and the shaft rod 31 drives the scraper assembly to scrape the inner wall of the reactor 1 through the radial rod 301. In this embodiment, the upper end of reaction kettle 1 is fixedly provided with motor frame 1c, and the upper end of motor frame 1c is fixedly provided with first motor 2 for driving shaft lever 31 to rotate.
The switching assembly comprises a first electric push rod 53, a first rotating disc 52 is arranged at the upper end of the rotating rod 51, the first electric push rod 53 is fixedly installed on the radial rod 301 along the length direction of the radial rod 301, a push plate 54 is fixedly arranged at the telescopic end of the first electric push rod 53, a notch 541 is formed in the push plate 54 along the length direction perpendicular to the first electric push rod 53, and a convex column 521 extending into the notch 541 is arranged at the eccentric position of the first rotating disc 52; when the first electric push rod 53 is completely retracted, the first rotary disc 52 drives the rotary rod 51 to rotate to the first position, and when the first electric push rod 53 is completely extended, the first rotary disc 52 drives the rotary rod 51 to rotate 180 degrees to the second position.
The transmission assembly comprises a first bevel gear 41, a convex sleeve 1d sleeved outside the shaft rod 31 is arranged at the top of the inner wall of the reaction kettle 1, and the first bevel gear 41 is fixedly installed on the outer side of the convex sleeve 1 d; a second bevel gear 43 is rotatably connected to the shaft 31 below the radial rod 301, a third bevel gear 42 is rotatably connected between the first bevel gear 41 and the second bevel gear 43 on the outer side of the shaft 31, and the third bevel gear 42 is meshed with the first bevel gear 41 and the second bevel gear 43; the radial rod 301 is rotatably connected with a first rotating shaft 45 arranged along the radial direction of the shaft rod 31, one end of the first rotating shaft 45 close to the shaft rod 31 is fixedly provided with a fourth bevel gear 44 meshed with the second bevel gear 43, and one end of the first rotating shaft 45 far away from the shaft rod 31 is provided with a clamping plate 451; the rotation speed ratio of the second bevel gear 43 to the fourth bevel gear 44 is 1:3.
The knocking component comprises a second rotating shaft 81, and the second rotating shaft 81 is rotatably connected in the rotating rod 51 and is arranged along the axial direction of the radial rod 301; one end of the second rotating shaft 81 is fixedly provided with a second rotating disc 63, the other end of the second rotating shaft is fixedly provided with a rotating block 811, a clamping groove 8a is formed in the rotating block 811, and the inner side wall of the reaction kettle 1 is provided with an annular convex edge 11; when the rotating rod 51 rotates to the first position, the clamping plate 451 extends into the clamping groove 8a, the first rotating shaft 45 is connected with the second rotating shaft 81, and the first rotating shaft 45 drives the second rotating shaft 81 to rotate; when the rotating rod 51 rotates to the second position, the annular convex edge 11 extends into the clamping groove 8a, the first rotating shaft 45 is separated from the second rotating shaft 81, and the second rotating shaft does not rotate when the shaft rod 31 rotates; a plurality of convex rods 5c are arranged on the outer side of the rotating rod 51, a sliding rod 61 is connected in the convex rods 5c in a sliding manner along the axial direction of the rotating rod 51, a connecting rod 62 is hinged at the eccentric position of the second turntable 63, the other end of the connecting rod 62 is hinged with the upper end of the sliding rod 61, and the sliding rod 61 is driven to reciprocate up and down by the connecting rod 62 when the second turntable 63 rotates; the end of each protruding rod 5c is hinged with a knocking rod 64, a linkage rod 66 is arranged between the knocking rods 64, a torsion spring 65 for forcing the knocking rod 64 to turn is fixedly arranged on one protruding rod 5c, a stirring component is arranged on the sliding rod 61, and when the sliding rod 61 reciprocates upwards, the stirring component and the torsion spring 65 are matched to stir the knocking rod 64 to rotate in a reciprocating mode. The shifting component comprises a shifting claw 611, a mounting groove 6a is formed in the outer side of the sliding rod 61, the shifting claw 611 is arranged in the mounting groove 6a, an elastic sheet 612 for forcing the shifting claw 611 to extend out of the mounting groove 6a is arranged in the mounting groove 6a, a shifting block 641 is arranged on a knocking rod 64 connected with the torsion spring 65, when the sliding rod 61 moves upwards, the shifting block 641 abuts against the shifting claw 611, and the shifting claw 611 is screwed into the mounting groove 6 a; when the sliding rod 61 descends, the pusher dog 611 pushes the knock bar 64 against the pusher 641 to rotate against the torsion spring 65, and when the pusher dog 611 disengages from the pusher 641, the knock bar 64 is returned by the torsion spring 65.
The scraper component comprises an upper belt wheel 82 fixedly mounted on a second rotating shaft 81, an upper protruding shaft 5a is arranged on the outer side of the rotating rod 51, a lower belt wheel 83 is connected to the upper protruding shaft 5a in a rotating mode, and a transmission belt 84 is arranged between the upper belt wheel 82 and the lower belt wheel 83; a plurality of lower protruding shafts 5b are arranged below the upper protruding shaft 5a and below the rotating rod 51 side by side in a downward manner, a first gear 75 coaxial with the lower belt wheel 83 is connected to the upper protruding shaft 5a in a rotating manner, the first gear 75 is fixedly connected with the lower belt wheel 83, a second gear 74 is connected to each lower protruding shaft 5b in a rotating manner, the plurality of second gears 74 are sequentially meshed from top to bottom, and the first gear 75 is meshed with the second gear 74 at the top; a third gear 73 is fixedly arranged at the end part of each lower protruding shaft 5b, a third rotating shaft 7a parallel to the lower protruding shaft 5b is rotatably connected at the eccentric position of each second gear 74, a scraping plate 71 is arranged at the end part of each third rotating shaft 7a, and a fourth gear 72 meshed with the third gear 73 is fixedly arranged on each third rotating shaft 7 a; when the annular convex edge 11 extends into the clamping groove 8a, the plurality of scraping plates 71 are spliced to form a scraper attached to the inner wall of the reaction kettle 1.
The present embodiment also provides a method for preparing a polyvinyl chloride resin using the above polyvinyl chloride resin preparation system, comprising the steps of:
s1, adding a monomer, water, an initiator and a dispersing agent into a reaction kettle 1 from an inlet 1a respectively;
s2, the rotating rod 51 is controlled to be in the first position through the switching assembly, then the shaft rod 31 is controlled to rotate, the shaft rod 31 drives the stirring rod 32 to rotate, raw materials in the reaction kettle 1 are stirred, meanwhile, the reaction kettle 1 is heated, and a plasticizing reaction is carried out, so that polymer small particles are formed; meanwhile, the shaft lever 31 controls the knocking component to knock the inner wall of the reaction kettle 1 through the transmission component, so that small-particle polymers slide to the bottom, and are plasticized under the action of the stirring rod 32 to prepare polyvinyl chloride resin;
s3, after the stirring rod 32 stirs for a set time, the shaft lever 31 is controlled to stop rotating, then the rotating lever 51 is controlled to rotate to a second position through the switching component, the scraper component is contacted with the inner wall of the reaction kettle 1, then the shaft lever 31 is controlled to rotate, the shaft lever 31 drives the scraper component to scrape off a polymer layer on the inner wall of the reaction kettle 1, the heat conduction effect of the reaction kettle 1 is kept, and meanwhile, a large polymer is formed after the polymer layer is scraped off and is adhered to the scraper component;
s4, controlling the shaft rod 31 to stop rotating, then controlling the rotating rod 51 to rotate to a first position through the switching assembly, controlling the shaft rod 31 to rotate, controlling the scraper assembly to rotate through the transmission assembly by the shaft rod 31, further enabling a large polymer adhered on the scraper assembly to be contacted with other raw materials, and further plasticizing components of the large polymer, and after the reaction is set for time, controlling the shaft rod 31 to stop rotating to complete full reaction;
and S5, discharging the prepared polyvinyl chloride resin out of the reaction kettle 1 through the outlet 1b to finish discharging and collecting.
In the above S2, as shown in fig. 3, it is an initial state of the present invention, when the first electric push rod 53 is completely contracted, the first rotary disc 52 drives the rotating rod 51 to rotate to the first position, the first motor 2 is started to drive the shaft 31 to rotate, when the shaft 31 rotates, because the first bevel gear 41 is fixedly connected to the boss 1d, because the first bevel gear 41 is engaged with the third bevel gear 42, the second bevel gear 43 is rotatably connected to the shaft 31, so that the second bevel gear 43 follows the rotation, because the second bevel gear 43 is engaged with the fourth bevel gear 44, the first rotating shaft 45 is driven to rotate, because the clamping plate 451 on the first rotating shaft 45 is engaged with the clamping groove 8a on the rotating block 811, and further the second rotary disc 63 is driven to rotate by the second rotating shaft 81, because the connecting rod 62 is hinged to the second rotary disc 63, the connecting rod 62 is hinged to the sliding rod 61, the sliding rod 61 is slidingly engaged on the rotating rod 51, and when the second sliding rod 63 rotates, the sliding rod 641 moves up and the sliding rod 641 contacts with the block 641 and the sliding rod 611, and the sliding rod 64 drives the sliding rod 611 to rotate, and the sliding rod 64 is driven to move down, and the sliding rod 64 is driven to push the inner striking rod 64 to overcome the lower striking bar 64, and the lower striking bar 64 when the lower striking bar 64 is driven to rotate.
In the above S3, when the switching assembly works, the first electric push rod 53 is fully extended, the first rotating disc 52 is driven to rotate 180 ° to the second position through the matching of the notch 541 and the convex pillar 521, the rotating rod 51 drives the rotating block 811 to rotate and separate from the clamping plate 451, and the clamping groove 8a on the rotating block 811 is matched with the annular convex edge 11, so that the second rotating shaft 81 cannot rotate, and meanwhile, the scraping plates 71 rotate to the position of attaching to the inner wall (as shown in fig. 1), and in addition, because the rotation speed ratio of the second bevel gear 43 to the fourth bevel gear 44 is 1:3, enabling the equipment to return to the initial position; because the upper belt wheel 82 and the lower belt wheel 83 are matched through the transmission belt 84, the uppermost second gear 74 is meshed with the first gear 75, meanwhile, the first gear 75 is fixedly connected with the lower belt wheel 83, so that the second gear 74 cannot rotate, the scraping plate 71 is kept in a vertical state, and the polymer layer on the inner wall is scraped off through the scraping plate 71 while the first motor 2 is started to drive the stirring rod 32 to stir.
In S4, the first motor 2 drives the shaft 31 to the position shown in fig. 1, and since the rotation speed ratio of the second bevel gear 43 to the fourth bevel gear 44 is 1:3, the device can return to the initial position, so that the clamping plate 451 is horizontally placed at this time, when the switching assembly works, the first electric push rod 53 is completely retracted, the first rotating disc 52 is driven to rotate 180 degrees to the first position through the matching of the notch 541 and the boss 521, so that the rotating block 811 is matched with the clamping plate 451 again, the first motor 2 is started to drive the shaft rod 31 to rotate, so as to drive the second rotating shaft 81 to rotate, the lower belt pulley 83 is driven to rotate, and the first gear 75 is driven to rotate, because the second gear 74 is meshed with the first gear 75, the plurality of second gears 74 are mutually meshed, so that the plurality of second gears 74 rotate, because the scraping plate 71 is hinged on the second gear 74, the scraping plate 71 rotates around the second gear 74, and because the fourth gear 72 is meshed with the third gear 73, the third gear 73 is fixedly connected to the rotating rod 51 through the lower boss shaft 5b, so that the third gear 73 is not rotated, and the fourth gear 72 and the third rotating shaft 7a are coaxially and fixedly connected, so that when the third rotating shaft 7a drives the scraping plate 71 to rotate around the second gear 74. After the reaction is performed for a set time, the first motor 2 is controlled to stop, and since the first gear 75 and the second gear 74 have the same diameter and the fourth gear 72 and the third gear 73 have the same diameter, the first motor 2 can drive the scraping plate 71 to stop at all vertical positions for use when the inner wall is scraped.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A preparation system of polyvinyl chloride resin is characterized by comprising a reaction kettle, wherein the upper end of the reaction kettle is provided with an inlet, the lower end of the reaction kettle is provided with an outlet, the reaction kettle is rotatably connected with a vertically arranged shaft rod, a stirring rod is fixedly arranged on the outer side of the shaft rod extending into the reaction kettle, a radial rod is arranged on the outer side of the shaft rod, one end of the radial rod, which is far away from the shaft rod, is rotatably connected with a rotating rod, and the rotating rod and the shaft rod are parallel to each other; the rotating rod is provided with a knocking component and a scraper component, the knocking component is used for knocking the inner wall of the reaction kettle so that small-particle polymers slide to the bottom along the inner wall of the reaction kettle, and the scraper component is used for scraping off a polymer layer on the inner wall of the reaction kettle; the automatic scraper device is characterized in that a transmission assembly is arranged on the shaft rod, a switching assembly is arranged on the radial rod, when the switching assembly is located at a first position, the knocking assembly is close to the inner side wall of the reaction kettle, the shaft rod drives the knocking assembly to knock the inner wall of the reaction kettle through the transmission assembly, when the switching assembly is located at a second position, the scraper assembly is attached to the inner wall of the reaction kettle, and the shaft rod drives the scraper assembly to scrape the inner wall of the reaction kettle through the radial rod.
2. The system for preparing polyvinyl chloride resin according to claim 1, wherein a motor frame is fixedly arranged at the upper end of the reaction kettle, and a first motor for driving the shaft rod to rotate is fixedly arranged at the upper end of the motor frame.
3. The system for preparing polyvinyl chloride resin according to claim 1, wherein the switching assembly comprises a first electric push rod, a first rotary table is arranged at the upper end of the rotating rod, the first electric push rod is fixedly mounted on the radial rod along the length direction of the radial rod, a push plate is fixedly arranged at the telescopic end of the first electric push rod, a notch is arranged in the push plate along the length direction perpendicular to the first electric push rod, and a convex column extending into the notch is arranged at the eccentric position of the first rotary table; when the first electric push rod is completely contracted, the first rotary disc drives the rotary rod to rotate to the first position, and when the first electric push rod is completely extended out, the first rotary disc drives the rotary rod to rotate 180 degrees to the second position.
4. The polyvinyl chloride resin preparation system according to claim 1, wherein the transmission assembly comprises a first bevel gear, a convex sleeve sleeved on the outer side of the shaft rod is arranged on the top of the inner wall of the reaction kettle, and the first bevel gear is fixedly mounted on the outer side of the convex sleeve; a second bevel gear is rotatably connected to the shaft lever below the radial lever, a third bevel gear is rotatably connected to the outer side of the shaft lever between the first bevel gear and the second bevel gear, and the third bevel gear is meshed with the first bevel gear and the second bevel gear; a first rotating shaft arranged along the radial direction of the shaft lever is rotatably connected to the radial lever, a fourth bevel gear meshed with the second bevel gear is fixedly arranged at one end, close to the shaft lever, of the first rotating shaft, and a clamping plate is arranged at one end, far away from the shaft lever, of the first rotating shaft; the rotating speed ratio of the second bevel gear to the fourth bevel gear is 1:3.
5. the system for preparing polyvinyl chloride resin according to claim 4, wherein the knocking assembly includes a second rotating shaft rotatably connected within the rotating shaft and disposed in an axial direction of the radial shaft; a second rotating disc is fixedly arranged at one end of the second rotating shaft, a rotating block is fixedly arranged at the other end of the second rotating shaft, a clamping groove is formed in the rotating block, and an annular convex edge is arranged on the inner side wall of the reaction kettle; when the rotating rod rotates to the first position, the clamping plate extends into the clamping groove, the first rotating shaft is connected with the second rotating shaft, and the first rotating shaft drives the second rotating shaft to rotate; when the rotating rod rotates to the second position, the annular convex edge extends into the clamping groove, the first rotating shaft is separated from the second rotating shaft, and the second rotating shaft does not rotate when the shaft rod rotates; a plurality of convex rods are arranged on the outer side of the rotating rod, slide rods are connected in the convex rods in a sliding manner along the axial direction of the rotating rod, a connecting rod is hinged at the eccentric position of the second rotary table, the other end of the connecting rod is hinged with the upper ends of the slide rods, and the slide rods are driven to reciprocate up and down through the connecting rod when the second rotary table rotates; the tip of every nose bar all articulates there is the rapping bar, is equipped with the trace between a plurality of rapping bars, fixes being equipped with the torsional spring that is used for forcing the rapping bar upset on one of them nose bar, be equipped with on the slide bar and stir the subassembly, when the reciprocating motion that makes progress of slide bar, stir the subassembly and stir rapping bar reciprocating rotation with the torsional spring cooperation.
6. The system for preparing polyvinyl chloride resin according to claim 5, wherein the poking assembly comprises a poking claw, a mounting groove is formed in the outer side of the sliding rod, the poking claw is arranged in the mounting groove, an elastic sheet for forcing the poking claw to extend out of the mounting groove is arranged in the mounting groove, a poking block is arranged on a knocking rod connected with the torsion spring, when the sliding rod moves upwards, the poking block abuts against the poking claw, and the poking claw is screwed into the mounting groove; when the sliding rod descends, the pusher dog pushes the knocking rod to overcome the rotation of the torsion spring by abutting against the pusher block, and when the pusher dog is separated from the pusher block, the knocking rod resets under the action of the torsion spring.
7. The system for preparing polyvinyl chloride resin according to claim 5, wherein the scraper assembly comprises an upper belt pulley fixedly mounted on the second rotating shaft, an upper protruding shaft is arranged on the outer side of the rotating shaft, a lower belt pulley is rotatably connected to the upper protruding shaft, and a transmission belt is arranged between the upper belt pulley and the lower belt pulley; a plurality of lower convex shafts are arranged below the upper convex shaft in parallel and downwards on the outer side of the rotating rod, a first gear coaxial with the lower belt wheel is rotatably connected to the upper convex shaft, the first gear is fixedly connected with the lower belt wheel, a second gear is rotatably connected to each lower convex shaft, the plurality of second gears are sequentially meshed from top to bottom, and the first gear is meshed with the uppermost second gear; a third gear is fixedly arranged at the end part of each lower convex shaft, a third rotating shaft parallel to the lower convex shaft is rotatably connected at the eccentric position of each second gear, a scraping plate is arranged at the end part of each third rotating shaft, and a fourth gear meshed with the third gear is fixedly arranged on each third rotating shaft; when the annular convex edge stretches into the clamping groove, the scraping plates are spliced to form the scraping plates attached to the inner wall of the reaction kettle.
8. A method for preparing a polyvinyl chloride resin using the polyvinyl chloride resin preparation system of claim 1, comprising the steps of:
s1, adding a monomer, water, an initiator and a dispersing agent into a reaction kettle from inlets respectively;
s2, controlling the rotating rod to be at a first position through the switching assembly, then controlling the shaft rod to rotate, driving the stirring rod to rotate by the shaft rod, stirring the raw materials in the reaction kettle, heating the reaction kettle at the same time, and carrying out plasticizing reaction to form small polymer particles; meanwhile, the shaft lever controls the knocking component to knock the inner wall of the reaction kettle through the transmission component, so that small-particle polymers slide down to the bottom and are plasticized under the action of the stirring rod to prepare polyvinyl chloride resin;
s3, after the stirring rod stirs for a set time, controlling the shaft lever to stop rotating, then controlling the rotating lever to rotate to a second position through the switching assembly, enabling the scraper component to be in contact with the inner wall of the reaction kettle, then controlling the shaft lever to rotate, driving the scraper component to scrape the polymer layer on the inner wall of the reaction kettle by the shaft lever, keeping the heat conduction effect of the reaction kettle, and forming a large polymer to be adhered on the scraper component after the polymer layer is scraped;
s4, controlling the shaft lever to stop rotating, controlling the rotating lever to rotate to a first position through the switching assembly, controlling the shaft lever to rotate, controlling the scraper blade assembly to rotate through the transmission assembly by the shaft lever, further enabling a large polymer adhered on the scraper blade assembly to be contacted with other raw materials, plasticizing the components of the large polymer, and controlling the shaft lever to stop rotating after the reaction is set for time so as to complete full reaction;
and S5, discharging the prepared polyvinyl chloride resin out of the reaction kettle through an outlet to finish discharging and collecting.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117960014A (en) * | 2024-03-26 | 2024-05-03 | 山西潞安集团余吾煤业有限责任公司 | Gasified coal water slurry concentration equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208627272U (en) * | 2018-05-29 | 2019-03-22 | 天津市科德化工有限公司 | A kind of Sulpho Tobias Acid sulfonating reaction kettle |
| CN210934686U (en) * | 2019-11-15 | 2020-07-07 | 蕉岭金鹏精细化工有限公司 | Calcium carbonate agitating unit |
| CN112473483A (en) * | 2020-10-30 | 2021-03-12 | 杨苏萍 | Food additive heating preparation equipment for chemical production for inhibiting peculiar smell propagation |
| CN112604627A (en) * | 2020-11-26 | 2021-04-06 | 苏庆清 | Resin reaction kettle |
| CN213408403U (en) * | 2020-09-15 | 2021-06-11 | 福建淳百味餐饮发展有限公司 | Production of frozen meat muddy flesh is with making beating device of flavouring |
| WO2021114117A1 (en) * | 2019-12-11 | 2021-06-17 | 凯泉（南通）污水处理有限公司 | Energy-saving crystallization tank for acrylamide production |
| CN214020744U (en) * | 2020-10-24 | 2021-08-24 | 郑州艾克思建材有限公司 | Synthetic reation kettle of polycarboxylate water reducing agent |
| CN215939660U (en) * | 2021-07-13 | 2022-03-04 | 融亿纺织科技(江苏)有限公司 | Slurry mixing device of yarn sizing machine |
| CN216273188U (en) * | 2021-11-08 | 2022-04-12 | 山东阳谷丽雅新材料有限公司 | Evaporator for treating production wastewater |
-
2022
- 2022-07-20 CN CN202210851314.7A patent/CN115228405B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208627272U (en) * | 2018-05-29 | 2019-03-22 | 天津市科德化工有限公司 | A kind of Sulpho Tobias Acid sulfonating reaction kettle |
| CN210934686U (en) * | 2019-11-15 | 2020-07-07 | 蕉岭金鹏精细化工有限公司 | Calcium carbonate agitating unit |
| WO2021114117A1 (en) * | 2019-12-11 | 2021-06-17 | 凯泉（南通）污水处理有限公司 | Energy-saving crystallization tank for acrylamide production |
| CN213408403U (en) * | 2020-09-15 | 2021-06-11 | 福建淳百味餐饮发展有限公司 | Production of frozen meat muddy flesh is with making beating device of flavouring |
| CN214020744U (en) * | 2020-10-24 | 2021-08-24 | 郑州艾克思建材有限公司 | Synthetic reation kettle of polycarboxylate water reducing agent |
| CN112473483A (en) * | 2020-10-30 | 2021-03-12 | 杨苏萍 | Food additive heating preparation equipment for chemical production for inhibiting peculiar smell propagation |
| CN112604627A (en) * | 2020-11-26 | 2021-04-06 | 苏庆清 | Resin reaction kettle |
| CN215939660U (en) * | 2021-07-13 | 2022-03-04 | 融亿纺织科技(江苏)有限公司 | Slurry mixing device of yarn sizing machine |
| CN216273188U (en) * | 2021-11-08 | 2022-04-12 | 山东阳谷丽雅新材料有限公司 | Evaporator for treating production wastewater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117960014A (en) * | 2024-03-26 | 2024-05-03 | 山西潞安集团余吾煤业有限责任公司 | Gasified coal water slurry concentration equipment |
| CN117960014B (en) * | 2024-03-26 | 2024-06-07 | 山西潞安集团余吾煤业有限责任公司 | Gasified coal water slurry concentration equipment |
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