CN112497559A - Preparation method of sanitary-grade wave-absorbing EPP beads - Google Patents
Preparation method of sanitary-grade wave-absorbing EPP beads Download PDFInfo
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- CN112497559A CN112497559A CN202011355343.1A CN202011355343A CN112497559A CN 112497559 A CN112497559 A CN 112497559A CN 202011355343 A CN202011355343 A CN 202011355343A CN 112497559 A CN112497559 A CN 112497559A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation method of sanitary wave-absorbing EPP beads, which comprises a shaping cylinder and a cooling cylinder, wherein two symmetrically distributed cylinders are fixed on the outer wall of the top of the shaping cylinder, the top ends of piston rods of the two cylinders are fixed with a same mounting plate, the outer wall of the top of the mounting plate is fixed with a same motor, the output end of the motor is fixed with a rotating shaft, the bottom end of the rotating shaft penetrates through the inside of the shaping cylinder and is fixed with a sealing plug through a bearing, stirring blades which are distributed in an annular shape at equal intervals are fixed on the outer wall of the rotating shaft in the shaping cylinder, and a filter screen is fixed on the middle lower part of the inner wall of the shaping cylinder. The two steps of cooling, heating and drying are operated in the shaping cylinder, the circulating pump can suck water with heat into the cooling cylinder, and then the cold air in the annular sealing cover is transferred into the cooling cylinder through the annular heat conducting sheets to dissipate the heat of the water without continuously updating water resources, so that the energy-saving and environment-friendly effects are achieved.
Description
Technical Field
The invention relates to the technical field of foaming materials, in particular to a preparation method of sanitary wave-absorbing EPP beads.
Background
The EEP solvent (ethyl 3-ethoxypropionate) is an ether ester with low volatility, has good solubility for a wide range of coating polymers, is not easy to crack, has high solubility for a wide range of polymers, has low solution viscosity (relative to the evaporation rate), has good solvent release performance for a coating film, and has good flowing and uniform coating properties in a wide range of coatings.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method of a sanitary wave-absorbing EPP bead.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of sanitary wave-absorbing EPP beads is characterized in that the wave-absorbing EPP beads are prepared by a screw extruder, a reaction kettle and a shaping device, the shaping device comprises a shaping cylinder and a cooling cylinder, two symmetrically distributed cylinders are fixed on the outer wall of the top of the shaping cylinder, the top ends of piston rods of the two cylinders are fixed with a same mounting plate, the outer wall of the top of the mounting plate is fixed with a same motor, the output end of the motor is fixed with a rotating shaft, the bottom end of the rotating shaft penetrates through the inside of the shaping cylinder and is fixed with a sealing plug through a bearing, the outer wall of the rotating shaft, which is positioned inside the shaping cylinder, is fixed with stirring blades which are distributed in an annular shape at equal intervals, the middle lower part of the inner wall of the shaping cylinder is fixed with a filter screen, the middle part of the outer wall of the top of the filter screen is provided with an, the outer wall of the cooling cylinder is provided with annular mounting ports which are distributed equidistantly, the inner wall of each annular mounting port is welded with an annular heat conducting sheet, the outer wall of the top of the cooling cylinder is provided with an outlet, the inner wall of the outlet is fixedly provided with a water delivery pipe, the water delivery pipe is communicated with the top of the outer wall on one side of the shaping cylinder, the outer wall of the bottom of the cooling cylinder is provided with an outlet, the inner wall of the outlet is fixedly provided with a water inlet pipe, the water inlet pipe is communicated with a bottom box of the outer wall on one side of the shaping cylinder, the outer wall of the cooling cylinder is fixedly provided with an annular sealing cover, the outer wall on one side of the annular sealing cover is provided with a mounting port, the inner wall of the mounting port is fixedly provided with a semiconductor refrigerating chip, the outer wall on one side of the annular sealing cover is fixedly provided with a heat dissipation, and the design jar top outer wall one side is fixed with the electric fan heater, the output of electric fan heater is fixed with the pipeline, and the pipeline is linked together with the design jar, the feed inlet has been seted up to the design jar top outer wall opposite side, and the inner wall of feed inlet is fixed with feeding part, the discharge gate has been seted up to the bottom inner wall of design jar, and the inner wall of discharge gate is fixed with ejection of compact part.
Preferably, the heat dissipation part comprises a dust screen, the dust screen is fixed on the outer wall of one side of the annular sealing cover, the semiconductor refrigeration chip is located inside the dust screen, and a heat dissipation fan is fixed on the inner wall of one side of the dust screen.
Preferably, the heater block includes annular heating cabinet, and annular heating cabinet is fixed in the outer wall middle part of design jar, the inside of annular heating cabinet is fixed with annular heating net, and one side outer wall top of annular heating cabinet is provided with the water intaking valve, one side outer wall bottom of annular heating cabinet is provided with the drain valve.
Preferably, the feed part includes the inlet pipe, and the inlet pipe is fixed in the inner wall of feed inlet, top outer wall one side of inlet pipe articulates there is the apron, and the apron is through hasp lock and inlet pipe fixed connection.
Preferably, arrange the material part including arranging the material pipe, and arrange the inner wall that the material pipe is located the bin outlet, arrange material pipe bottom outer wall spiro union has sealed lid, and the top inner wall of sealed lid is fixed with the pillar, the top of pillar is fixed with the closing plate, and the specification of closing plate and the specification looks adaptation of arranging the material pipe.
Preferably, the bottom of the outer wall of one side of the shaping cylinder is provided with a water outlet valve, and the outer wall of the water inlet pipe is provided with a control valve in a clamping manner.
Preferably, the cylinder, the motor, the semiconductor refrigeration chip, the annular heating net, the fan heater and the cooling fan are all connected with a switch through wires, and the switch is connected with the microprocessor through a wire.
The invention provides a preparation method of a sanitary wave-absorbing EPP bead, which comprises the following steps:
s1: 100 portions of polypropylene powder, 1 to 1.5 portions of wave absorbing agent, 0.1 to 3 portions of stabilizing agent and 2 to 5 portions of functional additive are evenly mixed in a high-speed mixer, extruded by a double screw and cut into EPP foaming master batch;
s2: the EPP foaming master batch is put into a reaction kettle, the internal temperature of the reaction kettle is heated to the foaming temperature of 160-170 ℃ and the foaming pressure of 8-9MPa, the reaction time period is 15-30min, and then the EPP foaming master batch is instantaneously released to the atmospheric pressure, so that EPP wave-absorbing beads are obtained;
s3: then placing the EPP wave-absorbing beads in forming equipment, injecting a proper amount of water into the forming equipment in advance, then operating a circulating pump and a semiconductor refrigeration chip, sucking moisture with heat into a cooling cylinder by a water inlet pipe, injecting cold air in an annular sealing cover into the cooling cylinder by a plurality of annular plate temperature-conducting sheets to dissipate the moisture, then dissipating the heat of the semiconductor refrigeration chip by a heat dissipation fan, simultaneously driving a rotating shaft and a plurality of stirring blades on the rotating shaft to stir the EPP wave-absorbing beads by the operation of a motor, fully cooling the EPP wave-absorbing beads, and completely cooling the EPP wave-absorbing beads within 10-15 min;
s4: then opening a water outlet valve, discharging water in a shaping cylinder, then operating an annular heating net in a heating component to heat the shaping cylinder, operating a motor to drive a rotating shaft and a plurality of stirring blades on the rotating shaft to stir EPP wave-absorbing beads to uniformly heat the EPP wave-absorbing beads, evaporating redundant moisture of the EPP wave-absorbing beads for 3-5 minutes, then opening a cover plate to discharge steam through a feeding pipe, then operating a fan heater, screwing out a sealing cover to bring out a support and a sealing plate, operating the motor to drive the rotating shaft and the plurality of stirring blades on the rotating shaft to stir the EPP wave-absorbing beads to rapidly dry the moisture of the EPP wave-absorbing beads for 5-10 minutes;
s5: the cylinder operates to drive the placing plate to move upwards, so that the motor and the rotating shaft are driven to move upwards, the sealing plug at the bottom end of the rotating shaft is separated from the fixing ring on the filter screen, and then the EPP wave-absorbing beads are discharged through the fixing ring and the discharge pipe to complete the work.
The invention has the beneficial effects that:
1. according to the preparation method of the sanitary wave-absorbing EPP beads, the two steps of cooling, heating and drying are operated in the shaping cylinder, the circulating pump can suck water with heat into the cooling cylinder, then cold air in the annular sealing cover is transferred into the cooling cylinder through the annular heat conducting sheets, the water with heat is radiated, water resources do not need to be updated continuously, and the energy-saving and environment-friendly effects are achieved;
2. according to the preparation method of the sanitary wave-absorbing EPP beads, the water in the annular heating box is heated by the annular heating net to be matched with the motor, the rotating shaft and the stirring blades can fully heat the EPP wave-absorbing beads, redundant moisture is evaporated, then the cover plate is opened to be discharged through the feeding pipe, then the sealing cover is opened, the support column and the sealing plate are pulled out to form the discharging pipe, then the fan heater operates to be matched with the motor, the rotating shaft and the stirring blades can fully air-dry the EPP wave-absorbing beads, residual moisture is dried, and the effect of fully heating and drying is achieved.
Drawings
FIG. 1 is a schematic vertical cross-sectional structure diagram of a preparation method of a sanitary-grade wave-absorbing EPP bead provided by the invention;
FIG. 2 is a schematic view of a cross-sectional structure of a cooling cylinder in a top view, in the preparation method of the sanitary wave-absorbing EPP beads provided by the invention;
fig. 3 is a schematic view of a filter screen overlooking structure of the preparation method of the sanitary wave-absorbing EPP beads provided by the invention.
In the figure: the device comprises a shaping cylinder 1, a cylinder 2, a placing plate 3, a motor 4, a rotating shaft 5, a stirring blade 6, a sealing plug 7, a filter screen 8, a fixing ring 9, a cooling cylinder 10, a water delivery pipe 11, a water inlet pipe 12, an annular heat conducting sheet 13, an annular sealing cover 14, a semiconductor refrigerating chip 15, a dustproof mesh cover 16, a radiating fan 17, a circulating pump 18, a control valve 19, an annular heating box 20, an annular heating mesh 21, a warm air blower 22, a feeding pipe 23, a discharging pipe 24, a sealing cover 25, a supporting column 26, a sealing plug 27 and a water outlet valve 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a preparation method of sanitary wave-absorbing EPP beads comprises the steps of uniformly mixing 100 parts of polypropylene powder, 1-1.5 parts of wave-absorbing agent, 0.1-3 parts of stabilizing agent and 2-5 parts of functional auxiliary agent in a high-speed mixer, extruding by a double screw and cutting into granules to obtain EPP foaming master batches;
the EPP foaming master batch is put into a reaction kettle, the internal temperature of the reaction kettle is heated to the foaming temperature of 160-170 ℃ and the foaming pressure of 8-9MPa, the reaction time period is 15-30min, and then the EPP foaming master batch is instantaneously released to the atmospheric pressure, so that EPP wave-absorbing beads are obtained;
then placing the EPP wave-absorbing beads in forming equipment, injecting a proper amount of water into the forming equipment in advance, then operating a circulating pump and a semiconductor refrigeration chip, sucking moisture with heat into a cooling cylinder by a water inlet pipe, injecting cold air in an annular sealing cover into the cooling cylinder by a plurality of annular plate temperature-conducting sheets to dissipate the moisture, then dissipating the heat of the semiconductor refrigeration chip by a heat dissipation fan, simultaneously driving a rotating shaft and a plurality of stirring blades on the rotating shaft to stir the EPP wave-absorbing beads by the operation of a motor, fully cooling the EPP wave-absorbing beads, and completely cooling the EPP wave-absorbing beads within 10-15 min;
then opening a water outlet valve, discharging water in a shaping cylinder, then operating an annular heating net in a heating component to heat the shaping cylinder, operating a motor to drive a rotating shaft and a plurality of stirring blades on the rotating shaft to stir EPP wave-absorbing beads to uniformly heat the EPP wave-absorbing beads, evaporating redundant moisture of the EPP wave-absorbing beads for 3-5 minutes, then opening a cover plate to discharge steam through a feeding pipe, then operating a fan heater, screwing out a sealing cover to bring out a support and a sealing plate, operating the motor to drive the rotating shaft and the plurality of stirring blades on the rotating shaft to stir the EPP wave-absorbing beads to rapidly dry the moisture of the EPP wave-absorbing beads for 5-10 minutes;
the cylinder operates to drive the placing plate to move upwards, so that the motor and the rotating shaft are driven to move upwards, the sealing plug at the bottom end of the rotating shaft is separated from the fixing ring on the filter screen, and then the EPP wave-absorbing beads are discharged through the fixing ring and the discharge pipe to complete the work.
In the invention, the wave-absorbing EPP beads are prepared by a screw extruder, a reaction kettle and a shaping device, the shaping device comprises a shaping cylinder 1 and a cooling cylinder 10, two symmetrically distributed cylinders 2 are fixed on the outer wall of the top of the shaping cylinder 1, the top ends of the piston rods of the two cylinders 2 are fixed with a same mounting plate 3, the outer wall of the top of the mounting plate 3 is fixed with a same motor 4, the output end of the motor 4 is fixed with a rotating shaft 5, the bottom end of the rotating shaft 5 penetrates through the inside of the shaping cylinder 1 and is fixed with a sealing plug 7 through a bearing, the outer wall of the rotating shaft 5 positioned in the shaping cylinder 1 is fixed with stirring blades 6 which are distributed in an annular shape at equal intervals, the middle lower part of the inner wall of the shaping cylinder 1 is fixed with a filter screen 8, the middle part of the outer wall of the top of the filter screen 8 is provided with an opening, the inner wall of the filter screen is fixed with, an annular temperature guide sheet 13 is welded on the inner wall of the annular mounting opening, an outlet is formed in the outer wall of the top of the cooling cylinder 10, a water delivery pipe 11 is fixed on the inner wall of the outlet, the water delivery pipe 11 is communicated with the top of the outer wall of one side of the shaping cylinder 1, an outlet is formed in the outer wall of the bottom of the cooling cylinder 10, a water inlet pipe 12 is fixed on the inner wall of the outlet and is communicated with a bottom box of the outer wall of one side of the shaping cylinder 1, an annular sealing cover 14 is fixed on the outer wall of the cooling cylinder 10, a mounting opening is formed in the outer wall of one side of the annular sealing cover 14, a semiconductor refrigeration chip 15 is fixed on the inner wall of the mounting opening, a heat dissipation part is fixed on the outer wall of one side of the annular sealing cover 14, the heat dissipation end of the semiconductor refrigeration chip 15 is located inside the heat dissipation part, a circulating pump 18 is oppositely, the output end of the warm air blower 22 is fixedly provided with a pipeline which is communicated with the shaping cylinder 1, the other side of the outer wall of the top of the shaping cylinder 1 is provided with a feeding hole, the inner wall of the feeding hole is fixedly provided with a feeding part, the inner wall of the bottom of the shaping cylinder 1 is provided with a discharging hole, the inner wall of the discharging hole is fixedly provided with a discharging part, the heat dissipation part comprises a dustproof mesh enclosure 16, the dustproof mesh enclosure 16 is fixedly arranged on the outer wall of one side of the annular sealing enclosure 14, the semiconductor refrigeration chip 15 is positioned inside the dustproof mesh enclosure 16, the inner wall of one side of the dustproof mesh enclosure 16 is fixedly provided with a heat dissipation fan 17, the heating part comprises an annular heating box 20, the annular heating box 20 is fixedly arranged in the middle of the outer wall of the shaping cylinder 1, the annular heating box 20 is fixedly provided with an annular heating mesh 21, the top, and inlet pipe 23 is fixed in the inner wall of feed inlet, top outer wall one side of inlet pipe 23 articulates there is the apron, and the apron is through hasp lock and inlet pipe 23 fixed connection, it expects the pipe 24 to arrange the material part including arranging the material, and arrange the inner wall that the pipe 24 is located the bin outlet, it has sealed lid 25 to arrange material pipe 24 bottom outer wall spiro union, and the top inner wall of sealed lid 25 is fixed with pillar 26, the top of pillar 26 is fixed with closing plate 27, and closing plate 27's specification and the specification looks adaptation of arranging material pipe 24, one side outer wall bottom of design jar 1 is provided with outlet valve 28, and the outer wall of inlet tube 12 is provided with control valve 19 to pressing from both sides, cylinder 2, motor 4, semiconductor refrigeration chip 15, annular heating net 21, electric fan heater 22 and radiator fan 17 all are connected with the switch.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A preparation method of sanitary wave-absorbing EPP beads is characterized in that two symmetrically-distributed cylinders (2) are fixed on the outer wall of the top of the shaping cylinder (1), a same placing plate (3) is fixed at the top ends of piston rods of the two cylinders (2), a same motor (4) is fixed on the outer wall of the top of the placing plate (3), a rotating shaft (5) is fixed at the output end of the motor (4), a sealing plug (7) is fixed at the bottom end of the rotating shaft (5) through a bearing in the shaping cylinder (1), stirring blades (6) which are distributed annularly at equal intervals are fixed on the outer wall of the rotating shaft (5) in the shaping cylinder (1), and a filter screen (8) is fixed at the middle lower part of the inner wall of the shaping cylinder (1), and the middle part of the outer wall of the top part of the filter screen (8) is provided with an opening, the inner wall of the opening is fixed with a fixing ring (9), a sealing plug (7) and the inner wall of the fixing ring (9) form clamping fit, the outer wall of the cooling cylinder (10) is provided with annular mounting ports which are distributed equidistantly, the inner wall of the annular mounting ports is welded with an annular temperature guide sheet (13), the outer wall of the top part of the cooling cylinder (10) is provided with an outlet, the inner wall of the outlet is fixed with a water pipe (11), the water pipe (11) is communicated with the top part of the outer wall of one side of the sizing cylinder (1), the outer wall of the cooling cylinder (10) is provided with an outlet, the inner wall of the outlet is fixed with a water inlet pipe (12), the water inlet pipe (12) is communicated with a bottom box of the outer wall of, the inner wall of installing port is fixed with semiconductor refrigeration chip (15), and the outer wall of annular sealed cowling (14) one side is fixed with the radiating part, the heat dissipation end of semiconductor refrigeration chip (15) is located inside the radiating part, and the outer wall of raceway (11) is provided with circulating pump (18) to pressing from both sides, the outer wall middle part of design jar (1) is fixed with the heater block, and the top outer wall one side of design jar (1) is fixed with electric fan heater (22), the output of electric fan heater (22) is fixed with the pipeline, and the pipeline is linked together with design jar (1), the feed inlet has been seted up to the top outer wall opposite side of design jar (1), and the inner wall of feed inlet is fixed with feeding part, the discharge gate has been seted up to the bottom inner wall of design jar (1), and the inner wall of discharge.
2. The method for preparing the sanitary wave-absorbing EPP beads according to claim 1, wherein the heat dissipation component comprises a dust screen (16), the dust screen (16) is fixed on one side of the outer wall of the annular sealing cover (14), the semiconductor refrigeration chip (15) is located inside the dust screen (16), and a heat dissipation fan (17) is fixed on one side of the inner wall of the dust screen (16).
3. The preparation method of the sanitary wave-absorbing EPP beads according to claim 1, characterized in that the heating component comprises an annular heating box (20), the annular heating box (20) is fixed in the middle of the outer wall of the shaping cylinder (1), an annular heating net (21) is fixed in the annular heating box (20), a water inlet valve is arranged at the top of the outer wall of one side of the annular heating box (20), and a water drain valve is arranged at the bottom of the outer wall of one side of the annular heating box (20).
4. The method for preparing the sanitary wave-absorbing EPP beads according to claim 1, wherein the feeding part comprises a feeding pipe (23), the feeding pipe (23) is fixed on the inner wall of the feeding port, a cover plate is hinged on one side of the outer wall of the top of the feeding pipe (23), and the cover plate is fixedly connected with the feeding pipe (23) through a snap lock.
5. The preparation method of sanitary wave-absorbing EPP beads according to claim 1, characterized in that the discharge part comprises a discharge pipe (24), the discharge pipe (24) is arranged on the inner wall of the discharge opening, the outer wall of the bottom of the discharge pipe (24) is screwed with a sealing cover (25), the inner wall of the top of the sealing cover (25) is fixed with a support column (26), the top end of the support column (26) is fixed with a sealing plate (27), and the specification of the sealing plate (27) is matched with the specification of the discharge pipe (24).
6. The preparation method of sanitary wave-absorbing EPP beads according to claim 1, characterized in that the bottom of the outer wall of one side of the shaping cylinder (1) is provided with a water outlet valve (28), and the outer wall of the water inlet pipe (12) is oppositely clamped with a control valve (19).
7. The preparation method of the sanitary wave-absorbing EPP beads according to claim 1, characterized in that the cylinder (2), the motor (4), the semiconductor refrigeration chip (15), the annular heating net (21), the fan heater (22) and the heat radiation fan (17) are all connected with a switch through wires, and the switch is connected with a microprocessor through wires.
8. A preparation method of sanitary wave-absorbing EPP beads is characterized by comprising the following steps:
s1: 100 portions of polypropylene powder, 1 to 1.5 portions of wave absorbing agent, 0.1 to 3 portions of stabilizing agent and 2 to 5 portions of functional additive are evenly mixed in a high-speed mixer, extruded by a double screw and cut into EPP foaming master batch;
s2: the EPP foaming master batch is put into a reaction kettle, the internal temperature of the reaction kettle is heated to the foaming temperature of 160-170 ℃ and the foaming pressure of 8-9MPa, the reaction time period is 15-30min, and then the EPP foaming master batch is instantaneously released to the atmospheric pressure, so that EPP wave-absorbing beads are obtained;
s3: then placing the EPP wave-absorbing beads in forming equipment, injecting a proper amount of water into the forming equipment in advance, then operating a circulating pump (18) and a semiconductor refrigeration chip (15), sucking water with heat into a cooling cylinder (10) by a water inlet pipe (12), injecting cold air in an annular sealing cover (16) into the cooling cylinder (10) by a plurality of annular plate temperature-conducting sheets (13) to dissipate the heat of the water, then dissipating the heat of the semiconductor refrigeration chip (15) by a cooling fan (17), and simultaneously, operating a motor (4) to drive a rotating shaft (5) and a plurality of stirring blades (6) on the rotating shaft to stir the EPP wave-absorbing beads, fully cooling the EPP wave-absorbing beads, and finishing the cooling of the EPP wave-absorbing beads within 10-15 min;
s4: then a water outlet valve (28) is opened, water in the shaping cylinder (1) is discharged, then an annular heating net (21) in a heating component operates to heat the shaping cylinder (1), a motor (4) operates to drive a rotating shaft (5) and a plurality of stirring blades (6) on the rotating shaft (5) to stir the EPP wave-absorbing beads so that the EPP wave-absorbing beads are uniformly heated, redundant moisture of the EPP wave-absorbing beads is evaporated for 3-5 minutes, then a cover plate is opened to discharge steam through a feeding pipe (23), then a fan heater operates, a sealing cover (25) is screwed out to take a support (26) and a sealing plate (27) out, then the motor (4) operates to drive the rotating shaft (5) and the plurality of stirring blades (6) on the rotating shaft (5) to stir the EPP wave-absorbing beads so that the moisture of the EPP wave-absorbing beads is rapidly dried for 5-10 minutes;
s5: the cylinder (2) operates to drive the placing plate (3) to move upwards, so that the motor (4) and the rotating shaft (5) are driven to move upwards, the sealing plug 7 at the bottom end of the rotating shaft (5) is separated from the fixing ring (9) on the filter screen (8), and then the EPP wave-absorbing beads are discharged through the fixing ring (9) and the discharging pipe (24), so that the work is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355343.1A CN112497559A (en) | 2020-11-27 | 2020-11-27 | Preparation method of sanitary-grade wave-absorbing EPP beads |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355343.1A CN112497559A (en) | 2020-11-27 | 2020-11-27 | Preparation method of sanitary-grade wave-absorbing EPP beads |
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| CN112497559A true CN112497559A (en) | 2021-03-16 |
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| CN202011355343.1A Pending CN112497559A (en) | 2020-11-27 | 2020-11-27 | Preparation method of sanitary-grade wave-absorbing EPP beads |
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| CN (1) | CN112497559A (en) |
Cited By (2)
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| CN113172758A (en) * | 2021-03-18 | 2021-07-27 | 中鑫建设集团有限公司 | Stirring device for basement wallboard waterproof concrete construction |
| CN113290732A (en) * | 2021-05-12 | 2021-08-24 | 峰特(浙江)新材料有限公司 | Granulation device and method for producing degradable plastic bags |
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