CN115301112B - Preparation process and processing equipment of ultra-high viscosity water-soluble pressure-sensitive adhesive - Google Patents
Preparation process and processing equipment of ultra-high viscosity water-soluble pressure-sensitive adhesive Download PDFInfo
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- CN115301112B CN115301112B CN202210872709.5A CN202210872709A CN115301112B CN 115301112 B CN115301112 B CN 115301112B CN 202210872709 A CN202210872709 A CN 202210872709A CN 115301112 B CN115301112 B CN 115301112B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/51—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/36—Mixing of ingredients for adhesives or glues; Mixing adhesives and gas
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- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The application relates to the field of pressure-sensitive adhesive production, in particular to a preparation process and processing equipment of an ultra-high viscosity water-soluble pressure-sensitive adhesive. In order to solve the technical problems that the dissolution process of the acrylic ester monomer needs long-time stirring work, the production efficiency of the acrylic ester pressure-sensitive adhesive is affected, and the rest added reagent is difficult to be completely mixed with the whole colloid in the stirring process. The application provides a processing device of an ultra-high viscosity water-soluble pressure-sensitive adhesive, which comprises a power component, a side valve component and the like; the power assembly is connected with the side valve assembly. According to the application, while circulating fluid is formed, the soft acrylate monomer foamed in the reaction tank is continuously torn up by the tearing component and the stirring component, then the colloid in the reaction tank starts to work in an internal circulation mode, so that the circulation of the colloid in the reaction tank is improved, and the mixing effect of the colloid and other reagents added later is improved.
Description
Technical Field
The application relates to the field of pressure-sensitive adhesive production, in particular to a preparation process and processing equipment of an ultra-high viscosity water-soluble pressure-sensitive adhesive.
Background
The pressure-sensitive adhesive comprises three main types of pressure-sensitive adhesive tapes, pressure-sensitive adhesive label papers and pressure-sensitive adhesive sheets, wherein in the production process, acrylic pressure-sensitive adhesives are the second only to rubber pressure-sensitive adhesives, the most used pressure-sensitive adhesives are copolymers of acrylic monomers and other vinyl monomers, and the pressure-sensitive adhesives can be roughly classified into two types of crosslinking type and non-crosslinking type.
In the process of producing acrylic pressure-sensitive adhesive, because acrylic monomers are indissolvable in water and most organic solvents, heated ethanol is required to be used for dissolving the acrylic monomers, and because the boiling point of the ethanol is lower, the ethanol is easy to volatilize in a large amount due to overhigh temperature, after the acrylic monomers are added into the heated ethanol, if the temperature is too low, the acrylic monomers can be softened through long-time stirring, and then the softened acrylic monomers can be dissolved through long-time stirring, so that the production time of the acrylic pressure-sensitive adhesive is too long, and the acrylic monomers can generate high-viscosity colloid after being dissolved, so that other reagents added later are difficult to be completely mixed with the whole colloid in the stirring process, and the difficulty of the whole production process is high.
Disclosure of Invention
In order to overcome the defects that long-time stirring is needed in the dissolving process of acrylate monomers, the production efficiency of acrylate pressure-sensitive adhesives is affected, and the rest added reagents are difficult to be completely mixed with the whole colloid in the stirring process, the application provides a preparation process of an ultra-high viscosity water-soluble pressure-sensitive adhesive and processing equipment thereof.
The technical scheme is as follows: the preparation process of the ultra-high viscosity water-soluble pressure-sensitive adhesive comprises the following working steps:
s1: feeding, namely adding raw materials with ammonium salt, acrylate monomers and ethanol solution into reaction equipment, heating the ethanol solution to enable the ethanol solution to be heated to a boiling point, and enabling the heated ethanol solution to slowly foam the acrylate monomers;
s2: circularly stirring, continuously feeding, volatilizing and condensing the heated ethanol solution to form reflux liquid, mixing with the continuously added raw materials, and shredding and dissolving the soft acrylate monomer in the raw materials;
s3: adding other raw materials, finishing feeding work, dissolving acrylate monomers to form colloid, and adding the other raw materials with plasticizer and slaked lime;
s4: internal circulation stirring is carried out, the adding work of other raw materials is continuously carried out, and meanwhile, the formed colloid is circulated up and down, so that the colloid in the circulation is fully mixed with the other raw materials added later;
s5: unloading, namely unloading and collecting the produced acrylic pressure-sensitive adhesive.
As a preferable technical scheme of the application, the ultra-high viscosity water-soluble pressure-sensitive adhesive processing equipment comprises a power component, a side valve component, a stirring component, a tearing component, a supporting frame, a reaction tank, a pressure release plate, a feed hopper, a condensation pipe, a drainage cylinder and a screw rod; the support frame is fixedly connected with a reaction tank through a flange; the bottom of the reaction tank is provided with a discharge valve; the middle part of the pressure release plate is rotationally connected with a rotary pipeline; the high-temperature gas in the reaction tank passes through the pressure relief plate at the upper side, rises to the vicinity of the condensing pipe at the upper part of the reaction tank, is condensed into liquid, then drops into the liquid storage tank at the upper side of the rotary pipeline, flows downwards into the drainage cylinder between the pressure relief plate and the reaction tank along the through groove between the liquid storage tank and the pipeline hole of the rotary pipeline, and returns to the bottom of the reaction tank to form circulating fluid; the top of the reaction tank is fixedly connected with a feed hopper; the lower end of the feed hopper is sleeved on the upper side of the rotary pipeline; a screw rod is rotatably connected in the drainage tube; the upper end of the screw rod is rotationally connected with the feed hopper; the upper side of the reaction tank is fixedly connected with a first motor; a plurality of reflux grooves are formed around the middle part of the drainage tube; the middle part of the drainage tube is connected with a side valve component; the side valve components are closely attached to the reflux grooves; a stirring component is connected between the lower end of the screw rod and a mounting ring on the discharge valve; the output shaft of the first motor drives the screw rod to rotate, and the screw rod drives the stirring assembly to cooperate with the tearing assembly at the lower end of the drainage tube to tear the added soft rubber; after the material is added, the power component in the reaction tank drives the rotary pipeline, the side valve component and the tearing component to work, so that the side valve component leaves the reflux groove, the tearing component leaves the stirring component, and the internal circulation work is started.
As a preferable technical scheme of the application, the lower side of the feed hopper is fixedly connected with a liquid collecting hopper, and a middle pipeline of the condensing pipe is positioned in the liquid collecting hopper.
As a preferable technical scheme of the application, the screw blade on the screw rod is formed by alternately splicing a plurality of extrusion blades and mixing blades.
As a preferable technical scheme of the application, the power assembly comprises a second motor, a rotating shaft, a first bevel gear, a second bevel gear and a push rod; the left side of the reaction tank is fixedly connected with a second motor; a rotating shaft is rotationally connected between the reaction tank and the pressure relief plate; the right end of the rotating shaft is fixedly connected with a first bevel gear; the lower side of the rotary pipeline is fixedly connected with a second bevel gear; the first bevel gear is meshed with the second bevel gear; a push rod is fixedly connected to the right side of the rotary pipeline; the push rod is connected with the side valve assembly; the push rod is connected with the tearing component.
As a preferred technical scheme of the application, the side valve assembly comprises a first swivel, a fixed rod and a plug plate; the middle part of the drainage tube is rotationally connected with two first rotating rings which are respectively positioned on the upper side of the reflux groove and the lower side of the reflux groove; a plurality of fixing rods are fixedly connected between the two first rotating rings; a plug board is fixedly connected in each fixing rod; the plug plates are respectively clung to one reflux groove; a fixed rod on the right side is fixedly connected with a push rod.
As a preferable technical scheme of the application, the stirring assembly comprises a second swivel, a radial arm and a stirring blade; a plurality of radial arms are fixedly connected around the lower end of the spiral rod; the upper side of the mounting ring is rotatably connected with a second swivel; the lower ends of the rotating arms are fixedly connected with a second swivel; the middle part of the spiral arm is fixedly connected with a stirring blade respectively.
As a preferable technical scheme of the application, the middle parts of the radial arms are all arranged into S-shaped structures.
As a preferable technical scheme of the application, the tearing assembly comprises a third swivel, a push block, an annular sliding frame, a wedge block, a spring piece and a hook piece; the lower side of the drainage tube is rotatably connected with a third swivel; two pushing blocks are fixedly connected to the lower side of the third swivel; the lower end of the drainage tube is connected with an annular sliding frame in a sliding way; a spring piece is fixedly connected between the annular sliding frame and the drainage tube respectively; the left side and the right side of the annular sliding frame are fixedly connected with a wedge block respectively; two pushing blocks are respectively clung to one wedge-shaped block; a plurality of hook pieces are fixedly connected on the lower side of the encircling annular sliding frame; the push rod is fixedly connected with a third swivel.
As a preferable technical scheme of the application, the lower ends of the hook pieces are respectively matched with the left side grooves of the middle S-shaped structures of the radial arms, and the hook pieces are respectively positioned in the left side grooves of the middle S-shaped structures of one radial arm.
The application has the beneficial effects that: according to the ultra-high viscosity water-soluble pressure-sensitive adhesive processing equipment, during the production of acrylic acid ester pressure-sensitive adhesive, high-temperature gas in a reaction tank passes through a pressure relief plate at the upper side, rises to the vicinity of a condensing pipe at the upper part of the reaction tank, is condensed into liquid, then drops into a liquid storage tank in the upper side of a rotary pipeline, flows downwards into a drainage cylinder between the pressure relief plate and the reaction tank along a through groove between the liquid storage tank and a pipeline hole of the rotary pipeline, returns to the bottom of the reaction tank to form circulating fluid, and simultaneously an output shaft of a first motor drives a screw rod to rotate, the screw rod drives a stirring assembly to be connected between the lower end of the screw rod and a mounting ring on a discharge valve, and the stirring assembly is matched with the lower end of the drainage cylinder to tear the assembly, so that acrylic acid ester monomers added into the reaction tank and deposited at the bottom are torn up, and the circulating fluid continuously impacts the acrylic ester monomers to reciprocate up and down at the bottom of the reaction tank, so that the acrylic ester monomers which are soft in the reaction tank are torn by the tearing assembly and the stirring assembly, the acrylic ester monomers are continuously broken, and the technical problem that the acrylic ester monomers are required to be stirred for a long time in the dissolution process and the production efficiency of acrylic ester is affected by the acrylic acid ester is solved;
after the material is added, the power component in the reaction tank drives the rotary pipeline, the side valve component and the tearing component to work, the side valve component leaves the reflux tank, the tearing component leaves the stirring component, colloid in the reaction tank continuously enters the drainage cylinder from the reflux tank and flows downwards from the bottom of the reaction tank to start internal circulation, the circulation of the colloid in the reaction tank is improved, the mixing effect of the colloid and other reagents added later is improved, and the technical problem that the other reagents added later are difficult to be mixed with the whole colloid completely in the stirring process is solved.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a sectional view of a reaction tank according to the present application;
FIG. 3 is a schematic perspective view of a power assembly according to the present application;
FIG. 4 is an enlarged view of zone F of the present application;
FIG. 5 is a schematic perspective view of a feed hopper and condenser tube of the present application;
FIG. 6 is a perspective view of a rotary pipe according to the present application;
FIG. 7 is a schematic perspective view of a side valve assembly of the present application;
FIG. 8 is a schematic view of the middle part of the drainage tube of the present application;
FIG. 9 is a schematic perspective view of a screw rod according to the present application;
FIG. 10 is a schematic perspective view of a stirring assembly and a tearing assembly according to the present application;
FIG. 11 is a schematic perspective view of a stirring assembly according to the present application;
FIG. 12 is a schematic perspective view of a radial arm of the present application;
fig. 13 is a schematic perspective view of a tear assembly according to the present application.
Part names and serial numbers in the figure: the device comprises a 1-supporting frame, a 2-reaction tank, a 21-discharge valve, a 22-installation ring, a 3-pressure release plate, a 31-rotating pipeline, a 311-liquid storage tank, a 312-through tank, a 4-feed hopper, a 41-liquid collecting hopper, a 5-condensing pipe, a 6-drainage cylinder, a 61-reflux tank, a 7-screw rod, a 71-first motor, a 72-extrusion blade, a 73-mixing blade, a 101-second motor, a 102-rotating shaft, a 103-first bevel gear, a 104-second bevel gear, a 105-push rod, a 201-first rotating ring, a 202-fixed rod, a 203-plug board, a 301-second rotating ring, a 302-rotating arm, a 303-stirring blade, a 401-third rotating ring, a 402-push block, a 403-annular sliding frame, a 404-wedge block, a 405-spring piece and a 406-hooking piece.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The preparation process of the ultra-high viscosity water-soluble pressure-sensitive adhesive comprises the following working steps:
s1: feeding, namely adding raw materials with ammonium salt, acrylate monomers and ethanol solution into reaction equipment, heating the ethanol solution to enable the ethanol solution to be heated to a boiling point, and enabling the heated ethanol solution to slowly foam the acrylate monomers;
s2: circularly stirring, continuously feeding, volatilizing and condensing the heated ethanol solution to form reflux liquid, mixing with the continuously added raw materials, and shredding and dissolving the soft acrylate monomer in the raw materials;
s3: adding other raw materials, finishing feeding work, dissolving acrylate monomers to form colloid, and adding the other raw materials with plasticizer and slaked lime;
s4: internal circulation stirring is carried out, the adding work of other raw materials is continuously carried out, and meanwhile, the formed colloid is circulated up and down, so that the colloid in the circulation is fully mixed with the other raw materials added later;
s5: unloading, namely unloading and collecting the produced acrylic pressure-sensitive adhesive.
Examples
The ultra-high viscosity water-soluble pressure-sensitive adhesive processing equipment, as shown in figures 1-13, comprises a power component, a side valve component, a stirring component, a tearing component, a supporting frame 1, a reaction tank 2, a pressure release plate 3, a feed hopper 4, a condensation pipe 5, a drainage cylinder 6 and a screw rod 7; the support frame 1 is connected with a reaction tank 2 through flange bolts; a discharge valve 21 is arranged at the bottom of the reaction tank 2; the upper part of the discharge valve 21 is fixedly connected with a mounting ring 22; the pressure relief plate 3 is connected with the inner upper side of the reaction tank 2 through bolts; the middle part of the pressure release plate 3 is rotationally connected with a rotary pipeline 31; a liquid storage tank 311 is arranged in the upper side of the rotary pipeline 31; a plurality of through grooves 312 are formed between the liquid storage groove 311 and the pipeline hole of the rotary pipeline 31; the top of the reaction tank 2 is connected with a feed hopper 4 through bolts; the lower end of the feed hopper 4 is sleeved on the upper side of the rotary pipeline 31; a condensing tube 5 is arranged at the upper part of the reaction tank 2; the lower side of the feed hopper 4 is fixedly connected with a liquid collecting hopper 41, and the middle pipeline of the condensing tube 5 is positioned in the liquid collecting hopper 41; the lower side of the pressure release plate 3 is connected with a drainage cylinder 6 through bolts; the lower end of the drainage tube 6 is fixedly connected with the reaction tank 2; the lower side of the rotary pipeline 31 is connected with the drainage tube 6; a screw rod 7 is rotatably connected in the drainage tube 6; the propeller blades on the propeller rod 7 are formed by alternately splicing a plurality of extrusion blades 72 and mixing blades 73; the upper end of the screw rod 7 is rotationally connected with the feed hopper 4; the upper side of the reaction tank 2 is connected with a first motor 71 through bolts; the output shaft of the first motor 71 is fixedly connected with a screw rod 7; a plurality of reflux grooves 61 are formed around the middle part of the drainage tube 6; the middle part of the drainage tube 6 is connected with a side valve component; the side valve assemblies are abutted against the respective return grooves 61; a power component is connected in the reaction tank 2; the power component is connected with the pressure release plate 3; the power assembly is connected with the rotary pipeline 31; the power assembly is connected with the side valve assembly; the lower end of the screw rod 7 is connected with a stirring assembly; the stirring assembly is connected with a mounting ring 22; the lower end of the drainage tube 6 is connected with a tearing component; the power component is connected with the tearing component.
As shown in fig. 1, 3 and 4, the power assembly includes a second motor 101, a rotation shaft 102, a first bevel gear 103, a second bevel gear 104 and a push rod 105; the left side of the reaction tank 2 is connected with a second motor 101 through bolts; a rotating shaft 102 is rotatably connected between the reaction tank 2 and the pressure relief plate 3; the right end of the rotating shaft 102 is fixedly connected with a first bevel gear 103; a second bevel gear 104 is fixedly connected to the lower side of the rotary pipeline 31; the first bevel gear 103 is meshed with the second bevel gear 104; the right side of the rotary pipeline 31 is connected with a push rod 105 through a bolt; the push rod 105 is connected to the side valve assembly; the push rod 105 is connected to the tear assembly.
As shown in fig. 7, the side valve assembly includes a first swivel 201, a fixed rod 202, and a plug plate 203; the middle part of the drainage tube 6 is rotatably connected with two first swivel 201, and the two first swivel 201 are respectively positioned on the upper side of the reflux groove 61 and the lower side of the reflux groove 61; a plurality of fixing rods 202 are connected between the two first rotating rings 201 through bolts; a plug board 203 is fixedly connected in each of the fixing rods 202; the plug plates 203 are respectively clung to one reflux groove 61; a fixed bar 202 on the right side is bolted to the push rod 105.
As shown in fig. 10 and 11, the stirring assembly comprises a second swivel 301, a radial arm 302 and a stirring blade 303; a plurality of radial arms 302 are connected around the lower end of the screw rod 7 through bolts; a second swivel 301 is rotatably connected to the upper side of the mounting ring 22; the lower ends of the rotating arms 302 are fixedly connected with a second swivel 301; the middle part of the radial arm 302 is welded with a stirring blade 303.
As shown in fig. 12, the middle portions of the radial arms 302 are each provided in an S-shaped structure.
As shown in fig. 10 and 13, the tearing assembly comprises a third swivel 401, a push block 402, an annular sliding frame 403, a wedge block 404, a spring member 405 and a hook piece 406; a third swivel 401 is rotatably connected to the lower side of the drainage tube 6; two pushing blocks 402 are welded on the lower side of the third swivel 401; the lower end of the drainage tube 6 is connected with an annular sliding frame 403 in a sliding way; a spring element 405 is fixedly connected between the annular sliding frame 403 and the drainage tube 6; the left side and the right side of the annular sliding frame 403 are respectively connected with a wedge block 404 through bolts; two push blocks 402 are each attached to one wedge block 404; a plurality of hook pieces 406 are fixedly connected with the lower side of the encircling annular sliding frame 403; the push rod 105 is fixedly connected with a third swivel 401.
The lower ends of the hook pieces 406 are respectively matched with the left side grooves of the middle S-shaped structure of the radial arm 302, and the hook pieces 406 are respectively positioned in the left side grooves of the middle S-shaped structure of one radial arm 302.
Before the reaction, an external cooling liquid conveying device is used, cooling liquid is conveyed into the condensation pipe 5 through a liquid inlet pipe on the left side of the condensation pipe 5, a liquid outlet pipe on the right side of the condensation pipe 5 is externally connected with a cooling liquid recycling device, the cooling liquid continuously enters the condensation pipe 5 and is discharged from the liquid outlet pipe to the cooling liquid recycling device, an external electromagnetic heater is used for heating the reaction tank 2, meanwhile, an external raw material conveying device slowly conveys raw materials with ammonium salt, acrylic ester monomers and ethanol solution into the feed hopper 4, a first motor 71 drives a screw rod 7 to rotate, the raw materials pass through a rotary pipeline 31 along the feed hopper 4 and enter a drainage cylinder 6, and the rotating screw rod 7 continuously conveys the raw materials downwards to the bottom of the reaction tank 2 through an extrusion blade 72 to start a slow feeding procedure.
After the raw materials with ammonium salt, acrylic ester monomer and ethanol solution enter the bottom of the reaction tank 2, the ethanol solution is continuously heated to the boiling point, so that the heated ethanol solution slowly foams the acrylic ester monomer, meanwhile, the spiral rod 7 drives the spiral arm 302, the stirring blade 303 and the second rotating ring 301 to rotate, the stirring blade 303 is stirred in the ethanol solution in the bottom of the reaction tank 2 to form a vortex, the acrylic ester monomer deposited at the bottom of the reaction tank 2 continuously impacts the hook piece 406 along with the vortex, and meanwhile, the rotating spiral arm 302 and the static hook piece 406 tear the acrylic ester monomer which moves rapidly to speed up the dissolution of the acrylic ester monomer.
After the ethanol solution is heated to the boiling point, volatile gas is continuously generated in the ethanol solution and passes through the pressure release plate 3 upwards, the volatile gas is converged around the condensation pipe 5 along the inner top of the reaction tank 2, and is converged into liquid when contacting the condensation pipe 5, the liquid drops downwards into the liquid collecting hopper 41 and drops downwards into the liquid storage tank 311 of the rotary pipeline 31 along the liquid collecting hopper 41, along with the continuous accumulation and rising of the liquid in the liquid storage tank 311, the liquid in the liquid storage tank 311 enters the drainage tube 6 through the through groove 312 and returns downwards to the bottom of the reaction tank 2, circulating fluid is formed, and as the circulating fluid is continuously sprayed out from the lower end of the drainage tube 6, the circulating fluid continuously impacts the acrylate monomer, so that the acrylate monomer rolls up and down in a reciprocating manner at the bottom of the reaction tank 2, the acrylate monomer which is soaked in the reaction tank 2 is continuously torn by the rotating arm 302 and the hook piece 406, and the dissolution speed of the acrylate monomer is further accelerated.
After finishing the feeding operation, along with continuous shredding treatment of the acrylate monomer by the radial arm 302 and the hook piece 406, the acrylate monomer is rapidly dissolved in the ethanol solution and forms high-viscosity colloid under the combination with ammonium salt, then an external electromagnetic heater reduces the heating power of the reaction tank 2, so that the temperature in the reaction tank 2 is reduced to be lower than the boiling point of the ethanol solution, volatilization of the ethanol solution is reduced, and then external raw material conveying equipment slowly conveys the rest raw materials with plasticizer and slaked lime into the feed hopper 4, so that the rest raw materials enter the bottom of the reaction tank 2 along the drainage tube 6.
During the process of conveying the rest raw materials, the output shaft of the second motor 101 drives the rotating shaft 102 and the first bevel gear 103 to rotate, the first bevel gear 103 is meshed with the second bevel gear 104 to drive the rotating pipeline 31 to rotate, the rotating pipeline 31 drives the push rod 105 to stir the fixing rod 202, the rest first rotating ring 201, the fixing rod 202 and the plug plate 203 are driven to rotate around the axis of the drainage tube 6, the plug plate 203 is enabled to leave the backflow groove 61, then colloid in the reaction tank 2 is continuously extruded into the drainage tube 6 from the backflow groove 61 under the influence of gravity, the colloid is enabled to be fully mixed with the rest raw materials added into the drainage tube 6 during the period of entering the drainage tube 6, the stirring blade 303 is sprayed out to the bottom of the reaction tank 2 from the lower end of the drainage tube 6, meanwhile, the rotating stirring blade 303 continuously stirs in the colloid, and the mixing effect of the colloid and the rest raw materials is enhanced on the basis of improving the colloid fluxibility.
When the push rod 105 pulls the fixed rod 202 to drive the plug 203 to leave the reflux groove 61, the push rod 105 pulls the third swivel 401 to drive the push block 402 to leave the wedge block 404, meanwhile, the wedge block 404 loses the blocking of the push block 402, the spring element 405 which is initially in a compressed state drives the annular sliding frame 403, the wedge block 404 and the hook piece 406 to lift upwards, the hook piece 406 pushes the middle S-shaped structure of the radial arm 302 to bend upwards to deform when passing through the radial arm 302, the hook piece 406 smoothly passes through the radial arm 302, and after the hook piece 406 leaves the radial arm 302, the radial arm 302 is restored, so that the hook piece 406 is far away from the rotating radial arm 302, and the resistance of stirring the stirring blade 303 to form a vortex in alternation in the bottom of the reaction tank 2 is reduced.
After finishing the processing work of the acrylic pressure-sensitive adhesive, the first motor 71 is turned off, and the acrylic pressure-sensitive adhesive obtained in the reaction tank 2 is collected into an external collecting tank through the discharge valve 21.
The technical principles of the embodiments of the present application are described above in connection with specific embodiments. The description is only intended to explain the principles of the embodiments of the application and should not be taken in any way as limiting the scope of the embodiments of the application. Based on the explanations herein, those skilled in the art will recognize other embodiments of the present application without undue burden, and those ways that are within the scope of the present application.
Claims (6)
1. The preparation process of the ultra-high viscosity water-soluble pressure-sensitive adhesive is characterized by comprising the following working steps of:
s1: feeding, namely adding raw materials with ammonium salt, acrylate monomers and ethanol solution into reaction equipment, heating the ethanol solution to enable the ethanol solution to be heated to a boiling point, and enabling the heated ethanol solution to slowly foam the acrylate monomers;
s2: circularly stirring, continuously feeding, volatilizing and condensing the heated ethanol solution to form reflux liquid, mixing with the continuously added raw materials, and shredding and dissolving the soft acrylate monomer in the raw materials;
s3: adding other raw materials, finishing feeding work, dissolving acrylate monomers to form colloid, and adding the other raw materials with plasticizer and slaked lime;
s4: internal circulation stirring is carried out, the adding work of other raw materials is continuously carried out, and meanwhile, the formed colloid is circulated up and down, so that the colloid in the circulation is fully mixed with the other raw materials added later;
s5: unloading, namely unloading and collecting the produced acrylic pressure-sensitive adhesive;
the ultra-high viscosity water-soluble pressure-sensitive adhesive processing equipment used in the ultra-high viscosity water-soluble pressure-sensitive adhesive preparation process comprises a supporting frame (1) and a reaction tank (2); the support frame (1) is fixedly connected with a reaction tank (2) through a flange; a discharge valve (21) is arranged at the bottom of the reaction tank (2); the method is characterized in that: the device also comprises a power assembly, a side valve assembly, a stirring assembly, a tearing assembly, a pressure release plate (3), a feed hopper (4), a condensing tube (5), a drainage tube (6) and a screw rod (7); the middle part of the pressure release plate (3) is rotationally connected with a rotary pipeline (31); the high-temperature gas in the reaction tank (2) rises to the vicinity of a condensing pipe (5) at the upper part of the reaction tank (2) through a pressure relief plate (3) at the upper side, is condensed into liquid, then drops into a liquid storage tank (311) in the upper side of a rotary pipeline (31), flows downwards into a drainage cylinder (6) between the pressure relief plate (3) and the reaction tank (2) along a through groove (312) between the liquid storage tank (311) and a pipeline hole of the rotary pipeline (31), and returns to the bottom of the reaction tank (2) to form circulating fluid; a feed hopper (4) is fixedly connected at the top of the reaction tank (2); the lower end of the feed hopper (4) is sleeved on the upper side of the rotary pipeline (31); a screw rod (7) is rotatably connected in the drainage tube (6); the upper end of the screw rod (7) is rotationally connected with the feed hopper (4); the upper side of the reaction tank (2) is fixedly connected with a first motor (71); a plurality of reflux grooves (61) are formed around the middle part of the drainage tube (6); the middle part of the drainage tube (6) is connected with a side valve component; the side valve components are closely attached to the respective reflux grooves (61); a stirring component is connected between the lower end of the screw rod (7) and a mounting ring (22) on the discharge valve (21); an output shaft of the first motor (71) drives a screw rod (7) to rotate, and the screw rod (7) drives a stirring assembly to be matched with a tearing assembly at the lower end of the drainage tube (6) to tear added soft rubber; after the materials are added, a power component in the reaction tank (2) drives the rotary pipeline (31), the side valve component and the tearing component to work, so that the side valve component leaves the reflux groove (61), the tearing component leaves the stirring component, and internal circulation work is started;
the power assembly comprises a second motor (101), a rotating shaft (102), a first bevel gear (103), a second bevel gear (104) and a push rod (105); a second motor (101) is fixedly connected to the left side of the reaction tank (2); a rotating shaft (102) is rotatably connected between the reaction tank (2) and the pressure relief plate (3); the right end of the rotating shaft (102) is fixedly connected with a first bevel gear (103); the lower side of the rotary pipeline (31) is fixedly connected with a second bevel gear (104); the first bevel gear (103) is meshed with the second bevel gear (104); the right side of the rotary pipeline (31) is fixedly connected with a push rod (105); the push rod (105) is connected with the side valve assembly; the push rod (105) is connected with the tearing component;
the side valve assembly comprises a first swivel (201), a fixed rod (202) and a plug board (203); the middle part of the drainage tube (6) is rotationally connected with two first swivel rings (201), and the two first swivel rings (201) are respectively positioned on the upper side of the reflux groove (61) and the lower side of the reflux groove (61); a plurality of fixing rods (202) are fixedly connected between the two first swivel rings (201); a plug board (203) is fixedly connected in each fixing rod (202); the plug plates (203) are respectively clung to one reflux groove (61); a fixed rod (202) on the right side is fixedly connected with the push rod (105);
the tearing assembly comprises a third swivel (401), a push block (402), an annular sliding frame (403), a wedge block (404), a spring piece (405) and a hook piece (406); a third swivel (401) is rotatably connected to the lower side of the drainage tube (6); two pushing blocks (402) are fixedly connected to the lower side of the third swivel (401); the lower end of the drainage tube (6) is connected with an annular sliding frame (403) in a sliding way; a spring piece (405) is fixedly connected between the annular sliding frame (403) and the drainage tube (6); the left side and the right side of the annular sliding frame (403) are fixedly connected with a wedge block (404) respectively; two pushing blocks (402) are respectively clung to one wedge block (404); a plurality of hook pieces (406) are fixedly connected with the lower side of the encircling annular sliding frame (403); the push rod (105) is fixedly connected with a third swivel (401).
2. The process for preparing the ultra-high viscosity water-soluble pressure-sensitive adhesive according to claim 1, which is characterized in that: the lower side of the feed hopper (4) is fixedly connected with a liquid collecting hopper (41), and the middle pipeline of the condensing pipe (5) is positioned in the liquid collecting hopper (41).
3. The process for preparing the ultra-high viscosity water-soluble pressure-sensitive adhesive according to claim 1, which is characterized in that: the propeller blades on the propeller rod (7) are formed by alternately splicing a plurality of extrusion blades (72) and mixing blades (73).
4. The process for preparing the ultra-high viscosity water-soluble pressure-sensitive adhesive according to claim 1, which is characterized in that: the stirring assembly comprises a second swivel (301), a radial arm (302) and a stirring blade (303); a plurality of radial arms (302) are fixedly connected around the lower end of the spiral rod (7); the upper side of the mounting ring (22) is rotatably connected with a second swivel (301); the lower ends of the rotating arms (302) are fixedly connected with a second swivel (301); the middle part of the rotating arm (302) is fixedly connected with a stirring blade (303).
5. The process for preparing the ultra-high viscosity water-soluble pressure-sensitive adhesive according to claim 4, wherein the process comprises the following steps: the middle parts of the radial arms (302) are all arranged into an S-shaped structure.
6. The process for preparing the ultra-high viscosity water-soluble pressure-sensitive adhesive according to claim 5, wherein the process comprises the following steps: the lower ends of the hook pieces (406) are respectively matched with the left side grooves of the middle S-shaped structures of the radial arms (302), and the hook pieces (406) are respectively positioned in the left side grooves of the middle S-shaped structures of one radial arm (302).
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