CN111286125A - Fireproof and heat-insulating MPP power cable protection pipe and preparation method thereof - Google Patents

Fireproof and heat-insulating MPP power cable protection pipe and preparation method thereof Download PDF

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Publication number
CN111286125A
CN111286125A CN202010281728.1A CN202010281728A CN111286125A CN 111286125 A CN111286125 A CN 111286125A CN 202010281728 A CN202010281728 A CN 202010281728A CN 111286125 A CN111286125 A CN 111286125A
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China
Prior art keywords
cable protection
power cable
pipe body
mpp power
parts
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Withdrawn
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CN202010281728.1A
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Chinese (zh)
Inventor
杨关楼
吴君华
陈晓君
何忠华
王景侠
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Hangzhou Xinlu Industrial Co ltd
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Hangzhou Xinlu Industrial Co ltd
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Priority to CN202010281728.1A priority Critical patent/CN111286125A/en
Publication of CN111286125A publication Critical patent/CN111286125A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0406—Details thereof
    • H02G3/0412—Heat or fire protective means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/04—Installations of electric cables or lines in or on the ground or water in surface ducts; Ducts or covers therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2254/00—Tubes
    • B05D2254/02—Applying the material on the exterior of the tube
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Spray Control Apparatus (AREA)

Abstract

The invention discloses a fire-proof and heat-insulating MPP power cable protection pipe which comprises a pipe body and a fire-proof heat-insulating layer, wherein the fire-proof heat-insulating layer is sprayed on the outer surface of the pipe body, and the pipe body comprises the following raw materials in parts by weight: 100-120 parts of polypropylene resin, 2-5 parts of tackifier, 12-18 parts of plasticizer, 8-12 parts of lubricant, 0.5-2 parts of antioxidant, 0.05-2 parts of light stabilizer, 0.1-0.5 part of pigment and 10-20 parts of deionized water; the MPP power cable protection tube is characterized in that a fireproof heat insulation layer is sprayed on the outer side of the tube body, and a fireproof heat insulation coating prepared from organosilicon modified epoxy resin, graphite powder, nano calcium carbonate, an antistatic agent, talcum powder, pigment and deionized water in a raw material ratio is sprayed on the outer side of the tube body through a spraying device, so that the MPP power cable protection tube has the fireproof heat insulation function.

Description

Fireproof and heat-insulating MPP power cable protection pipe and preparation method thereof
Technical Field
The invention relates to the field of MPP power cable protection pipes, in particular to a fireproof and heat-insulating MPP power cable protection pipe and a preparation method thereof.
Background
The MPP pipe is also called MPP power cable protection pipe and is divided into an excavation type and a non-excavation type, the MPP non-excavation pipe is called MPP jacking pipe or dragging pipe, the MPP pipe adopts modified polypropylene as main raw materials, has the characteristics of high temperature resistance and external pressure resistance, and is suitable for high-voltage transmission line cable calandria pipe materials above 10 KV.
The existing MPP power cable protection pipe has poor fireproof and heat insulation capabilities, and is short in service life when used in an actual process; when the body outside spraying fire prevention thermal-insulated coating of MPP power cable protection pipe through spray coating device, because the specification of the body of the MPP power cable protection of difference is different, be difficult to realize the spacing fixed of body under the condition that does not influence the spraying, current spray coating device can not carry out all-round even spraying to the body simultaneously, the fire prevention thermal-insulated ability of the MPP power cable protection pipe that leads to producing exists differently, and can't retrieve the recycle to the extravagant coating of spraying in-process, and then lead to manufacturing cost's increase.
Disclosure of Invention
The invention aims to provide a fire-proof heat-insulating MPP power cable protection pipe and a preparation method thereof, aiming at overcoming the defects that the existing MPP power cable protection pipe has poor fire-proof heat-insulating capability and short service life when used in the actual process; when the body outside spraying fire prevention thermal-insulated coating of MPP power cable protection pipe through spray coating device, because the specification of the body of the MPP power cable protection of difference is different, be difficult to realize the spacing fixed of body under the condition that does not influence the spraying, current spray coating device can not carry out all-round even spraying to the body simultaneously, the fire prevention thermal-insulated ability of the MPP power cable protection pipe that leads to producing exists differently, and can't retrieve the recycle to the extravagant coating of spraying in-process, and then lead to the technical problem of manufacturing cost's increase.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a thermal-insulated MPP power cable protection tube of fire prevention, includes body and fire prevention insulating layer, body surface spraying has the fire prevention insulating layer, the weight part ratio of each raw materials of body is:
100-120 parts of polypropylene resin, 2-5 parts of tackifier, 12-18 parts of plasticizer, 8-12 parts of lubricant, 0.5-2 parts of antioxidant, 0.05-2 parts of light stabilizer, 0.1-0.5 part of pigment and 10-20 parts of deionized water;
the concrete preparation process of the pipe body is as follows:
pouring the tackifier and the deionized water into the charging barrel, and continuously stirring for 21-25 min; and then, pouring the polypropylene resin, the plasticizer, the lubricant, the antioxidant, the light stabilizer and the pigment into a charging barrel, stirring for 6-8min at a stirring speed of 120 plus 180r/min to obtain a mixture for producing a pipe body, adding the pipe body mixture into a double-screw extrusion granulator, extruding the pipe body of the thermal MPP power cable protection pipe, wherein the extrusion speed of the double-screw extrusion granulator is 100 plus 150r/min, cooling the strip of the pipe body material of the thermal MPP power cable protection pipe, granulating to obtain granules of the pipe body of the MPP power cable protection pipe, melting the granules of the pipe body of the MPP power cable protection pipe, and performing preplasticizing, cooling and molding by a die through a double-screw extruder.
As a further scheme of the invention: the specific preparation process of the fireproof heat-insulating layer is as follows:
adding 15-20 parts by weight of organic silicon modified epoxy resin, 5-8 parts by weight of graphite powder, 2-3 parts by weight of nano calcium carbonate, 3-5 parts by weight of antistatic agent, 15-20 parts by weight of talcum powder, 2-4 parts by weight of pigment and 40-50 parts by weight of deionized water into an emulsifying device, stirring for 15-20min at a stirring speed of 350 plus 400r/min to prepare the fireproof heat-insulating coating, and then uniformly spraying the fireproof heat-insulating coating on the surface of the MPP power cable protection pipe body through a spraying device to form the fireproof heat-insulating layer.
A preparation method of a fire-proof and heat-insulating MPP power cable protection pipe comprises the following specific operation steps:
s1: discharging the raw materials for manufacturing the MPP power cable protection pipe body out of a warehouse, drying, sucking the raw materials into a hopper by a material sucking device according to a formula, and discharging the raw materials into a charging barrel by the hopper;
s2: the raw materials entering the charging barrel in the step S1 are subjected to screw shearing, melting, mixing and stirring, extrusion and preplasticizing and then preliminarily molded, and the pipe body of the preliminarily molded MPP power cable protection pipe is cooled by a sizing sleeve to accurately limit the outer diameter structure of the cable protection pipe;
s3: sending the MPP power cable protection pipe body subjected to sizing in the step S2 into a vacuum spraying box for spraying and cooling, and further curing and shaping;
s4: printing characters on the MPP power cable protection pipe body which is subjected to spray cooling and shaping in the step S4 by using an ink-jet printer, and then drawing the characters to a cutting machine by using a tractor to cut the characters into sections so as to obtain the MPP power cable protection pipe body;
s5: placing MPP power cable protection pipe body inside the spraying device and carrying out the coating spraying, rotary mechanism drives the support column and removes to one end, it is inside to be located the body until support column one end, it removes to drive the slider through the extension of third pneumatic rod this moment, act on first rocking arm, on connecting rod and the second rocking arm, and then drive the transmission seat and lead to removing downwards in the rotation of connecting the rocking arm, until transmission seat and the contact of body inner wall, the motor power work of transmission seat drives the body and removes to the support column other end this moment, then spray the back to the pipeline, form the fire prevention insulating layer on rotatory body with the thermal-insulated coating spraying of preventing fires.
As a further scheme of the invention: the spraying device comprises a shell, a rotating mechanism, a sliding seat, spray heads, a servo motor and a second rotating plate, wherein the sliding seat is slidably mounted at the top of the inner side of the shell, a plurality of spray heads are respectively mounted at two ends of the bottom of the sliding seat, and the rotating mechanism is mounted at the outer side of one end of the shell;
the rotating mechanism comprises a mounting seat, a first air pressure rod, a second air pressure rod, a gear, a rack, a first rotating plate and a lifting plate, the mounting seat is fixedly connected with the outer wall of one end of the shell, a plurality of first air pressure rods are mounted at two ends of the inner side of the mounting seat, the telescopic ends of the first air pressure rods are connected with one side of the lifting plate, a bearing is mounted at the center of the inner part of the lifting plate, a connecting shaft penetrates through the inner side of the bearing, the first rotating plate is mounted at one end of the connecting shaft, the gear is mounted at the other end of the connecting shaft, the second air pressure rod is mounted at the bottom side of the lifting plate, the rack is mounted at the telescopic;
a support column is arranged on the inner side of the first rotating plate and positioned in the shell, mounting lugs are arranged above and below two ends of the support column, the mounting lugs are connected with one end of a third air pressure rod, first sliding grooves are formed in two sides above and below two ends of the support column, a sliding block is arranged on the outer side of the first sliding groove in a sliding mode, the telescopic end of the third air pressure rod is arranged on one side of the sliding block, first rotating arms are arranged on two sides of the sliding block in a rotating mode, one end of each first rotating arm is arranged with one end of a connecting rod, the other end of the connecting rod is arranged with a second rotating arm in a sliding mode, the inner side of the second rotating arm is arranged with the center of the outer side of the transmission seat in a rotating mode, two ends of the outer side of the transmission;
the utility model discloses a casing, including casing, servo motor, pivot, the inside both sides below of casing all is provided with the guide plate, servo motor output just is located casing internally mounted and has the pivot, the second commentaries on classics board is installed in the pivot outside.
As a further scheme of the invention: the utility model discloses a thermal-insulated storage battery of coating, including casing, casing top, be provided with the observation window outside, the storage battery passes through lacquer pump and pipeline and a plurality of shower nozzle switch-on connection of one end, and the water tank passes through water pump and pipeline and a plurality of shower nozzle switch-on connection of other end.
As a further scheme of the invention: an electric sliding rail is installed at the top of the inner side of the shell, and the sliding seat is installed on the electric sliding rail in a sliding mode.
As a further scheme of the invention: the support is installed to lifter plate one side, T type spout has been seted up to support one side, rack one side is provided with T type slider, and T type slider slidable mounting is in T type spout.
As a further scheme of the invention: the other end of the connecting rod is provided with a limiting slide rod, a second chute is formed in the second rotating arm, the other end of the connecting rod is slidably mounted in the second chute through the limiting slide rod, and a spring is sleeved between the first rotating arm and the second rotating arm and positioned on the outer side of the connecting rod.
As a further scheme of the invention: the driving wheels are installed at two ends of the interior of the transmission seat, the guide wheels are rotatably installed on the outer side of the interior of the transmission seat, the driving wheels are connected with the guide wheels through crawler transmission, the power motor is installed on the outer side of one end of the transmission seat, and the output end of the power motor is connected with one driving wheel.
As a further scheme of the invention: the bottom side of the shell is provided with two storage tanks through a partition plate, and polytetrafluoroethylene films are arranged on the outer sides of the second rotating plate and the guide plate and on the inner side of the shell.
The invention has the beneficial effects that: the MPP power cable protection pipe is characterized in that a fireproof heat-insulating layer is sprayed on the outer side of a pipe body of the MPP power cable protection pipe, and a fireproof heat-insulating coating formed by mixing organic silicon modified epoxy resin, graphite powder, nano calcium carbonate, an antistatic agent, talcum powder, pigment and deionized water in a raw material ratio is sprayed on the outer side of the pipe body through a spraying device, so that the MPP power cable protection pipe has the fireproof and heat-insulating functions;
during the preparation process of the MPP power cable protection pipe, when the spraying device is used for spraying fireproof heat insulation paint, the lifting plate is driven to translate by extending the first air pressure rod of the rotating mechanism, so that the support column connected with the first rotating plate is driven to move towards one end until one end of the support column is positioned in the pipe body, at the moment, the third air pressure rod on the mounting lug extends to drive the sliding block to move in the first sliding groove, the sliding block moves and simultaneously acts on the first rotating arm, the connecting rod and the second rotating arm, so that the transmission seat is driven to move downwards in a rotating guide way connected with the rotating arms until the transmission seat is contacted with the inner wall of the pipe body, the MPP power cable protection pipe bodies with different sizes and specifications are conveniently limited and fixed, then the transmission wheel is driven to rotate by the power motor of the transmission seat, so that the crawler is driven to transmit on the, the pipe body is limited and moved until the pipe body is completely moved into the shell, so that the pipe body can be fixed quickly, and the influence on the subsequent spraying process of the outer side of the pipe body can be avoided by limiting the inner side of the pipe body;
when the sliding block moves to drive the first rotating arm, the connecting rod and the second rotating arm to rotate and move, the connecting rod moves in the second sliding groove of the second rotating arm through the limiting sliding rod, the spring is compressed, the outer side of the transmission seat can be in elastic contact with the inner side of the pipe body through elastic deformation of the spring, and damage to the inner side of the pipe body is avoided;
in the cleaning and paint spraying processes, the sliding seat drives the spray head to move back and forth on the electric sliding rail, meanwhile, the second air pressure rod stretches and retracts to drive the rack to move back and forth, so that the meshed gears are driven to rotate, the gears and the first rotating plate coaxially rotate, the supporting columns and the pipe body are driven to rotate back and forth, and the periphery of the pipe body is comprehensively and uniformly cleaned and sprayed with paint;
when water pump work is with the water pressurization in the water tank from one end shower nozzle blowout, when wasing the body, servo motor drives the pivot and rotates, and then change the horizontally second and change board clockwise 30, water after wasing this moment is through guide plate and second change board top side fall into the hold up tank of one side, paint box's coating pressurization is followed other end shower nozzle blowout through lacquer pump work, when carrying out the spraying operation to the pipeline, servo motor drives the pivot and rotates, and then change the board anticlockwise rotation 60 with the horizontally second, the fire prevention thermal-insulated coating after the spraying this moment is through guide plate and second change board top side fall into the hold up tank of opposite side in, be convenient for collect reuse, the manufacturing cost of MPP power cable protection pipe has greatly been reduced.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a front view of a spray coating device of the present invention;
FIG. 2 is a schematic structural view of a rotating mechanism according to the present invention;
FIG. 3 is a schematic view of the internal structure of the spraying apparatus of the present invention;
FIG. 4 is a schematic view of a third pneumatic rod mounting structure according to the present invention;
FIG. 5 is an enlarged view of area A of FIG. 3 according to the present invention;
fig. 6 is a side view of the bottom structure inside the case of the present invention.
In the figure: 1. a housing; 2. a paint tank; 3. a water tank; 4. a rotation mechanism; 5. a mounting seat; 6. a first pneumatic rod; 7. a second pneumatic rod; 8. a gear; 9. a rack; 10. a support; 11. a first rotating plate; 12. a bearing; 13. a lifting plate; 14. an electric slide rail; 15. a slide base; 16. a spray head; 17. a support pillar; 18. a transmission seat; 19. mounting lugs; 20. a third pneumatic rod; 21. a slider; 22. a first chute; 23. connecting the rotating arm; 24. a first rotating arm; 25. a spring; 26. a connecting rod; 27. a second chute; 28. a limiting slide bar; 29. a second rotating arm; 30. a servo motor; 31. a second rotating plate; 32. a baffle; 33. a storage tank; 34. a rotating shaft; 35. and fixing the ears.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a thermal-insulated MPP power cable protection tube of fire prevention, includes body and fire prevention insulating layer, and body surface spraying has fire prevention insulating layer, and the weight share ratio of each raw materials of body is:
100-120 parts of polypropylene resin, 2-5 parts of tackifier, 12-18 parts of plasticizer, 8-12 parts of lubricant, 0.5-2 parts of antioxidant, 0.05-2 parts of light stabilizer, 0.1-0.5 part of pigment and 10-20 parts of deionized water;
the specific preparation process of the pipe body comprises the following steps:
pouring the tackifier and the deionized water into the charging barrel, and continuously stirring for 21-25 min; and then, pouring the polypropylene resin, the plasticizer, the lubricant, the antioxidant, the light stabilizer and the pigment into a charging barrel, stirring for 6-8min at a stirring speed of 120 plus 180r/min to obtain a mixture for producing a pipe body, adding the pipe body mixture into a double-screw extrusion granulator, extruding the pipe body of the thermal MPP power cable protection pipe, wherein the extrusion speed of the double-screw extrusion granulator is 100 plus 150r/min, cooling the strip of the pipe body material of the thermal MPP power cable protection pipe, granulating to obtain granules of the pipe body of the MPP power cable protection pipe, melting the granules of the pipe body of the MPP power cable protection pipe, and performing preplasticizing, cooling and molding by a die through a double-screw extruder.
The specific preparation process of the fireproof heat-insulating layer is as follows:
adding 15-20 parts by weight of organic silicon modified epoxy resin, 5-8 parts by weight of graphite powder, 2-3 parts by weight of nano calcium carbonate, 3-5 parts by weight of antistatic agent, 15-20 parts by weight of talcum powder, 2-4 parts by weight of pigment and 40-50 parts by weight of deionized water into an emulsifying device, stirring for 15-20min at a stirring speed of 350 plus 400r/min to prepare the fireproof heat-insulating coating, and then uniformly spraying the fireproof heat-insulating coating on the surface of the MPP power cable protection pipe body through a spraying device to form the fireproof heat-insulating layer.
The preparation method of the MPP power cable protection pipe comprises the following specific operation steps:
s1: discharging the raw materials for manufacturing the MPP power cable protection pipe body out of a warehouse, drying, sucking the raw materials into a hopper by a material sucking device according to a formula, and discharging the raw materials into a charging barrel by the hopper;
s2: the raw materials entering the charging barrel in the step S1 are subjected to screw shearing, melting, mixing and stirring, extrusion and preplasticizing and then preliminarily molded, and the pipe body of the preliminarily molded MPP power cable protection pipe is cooled by a sizing sleeve to accurately limit the outer diameter structure of the cable protection pipe;
s3: sending the MPP power cable protection pipe body subjected to sizing in the step S2 into a vacuum spraying box for spraying and cooling, and further curing and shaping;
s4: printing characters on the MPP power cable protection pipe body which is subjected to spray cooling and shaping in the step S4 by using an ink-jet printer, and then drawing the characters to a cutting machine by using a tractor to cut the characters into sections so as to obtain the MPP power cable protection pipe body;
s5: the MPP power cable protection pipe body is placed inside a spraying device to be sprayed with a coating, the rotating mechanism 4 drives the supporting column 17 to move towards one end until one end of the supporting column 17 is located inside the pipe body, at the moment, the third air pressure rod 20 extends to drive the sliding block 21 to move and acts on the first rotating arm 24, the connecting rod 26 and the second rotating arm 29, the transmission seat 18 is further driven to move downwards in a rotating guide of the connecting rotating arm 23 until the transmission seat 18 is in contact with the inner wall of the pipe body, at the moment, the power motor of the transmission seat 18 works to drive the pipe body to move towards the other end of the supporting column 17, and then after the pipeline is sprayed, the fireproof heat-insulating coating is sprayed on the.
Referring to fig. 1-6, a method for manufacturing an MPP power cable protection tube with fire prevention and heat insulation features that a spraying device includes a shell 1, a rotating mechanism 4, a sliding seat 15, nozzles 16, a servo motor 30 and a second rotating plate 31, the sliding seat 15 is slidably installed at the top of the inner side of the shell 1, the nozzles 16 are respectively installed at two ends of the bottom of the sliding seat 15, and the rotating mechanism 4 is installed at the outer side of one end of the shell 1;
the rotating mechanism 4 comprises a mounting seat 5, a first air pressure rod 6, a second air pressure rod 7, a gear 8, a rack 9, a first rotating plate 11 and a lifting plate 13, the mounting seat 5 is fixedly connected with the outer wall of one end of the shell 1, a plurality of first air pressure rods 6 are mounted at two ends of the inner side of the mounting seat 5, the telescopic ends of the first air pressure rods 6 are connected with one side of the lifting plate 13, a bearing 12 is mounted at the center of the inner part of the lifting plate 13, a connecting shaft penetrates through the inner side of the bearing 12, the first rotating plate 11 is mounted at one end of the connecting shaft, the gear 8 is mounted at the other end of the connecting shaft, the second air pressure rod 7 is mounted at the bottom side of the lifting plate 13, the;
a support column 17 is arranged on the inner side of the first rotating plate 11 and positioned in the shell 1, mounting lugs 19 are arranged above and below two ends of the support column 17, the mounting lugs 19 are connected with one end of a third air pressure rod 20, first sliding grooves 22 are formed in two sides above and below two ends of the support column 17, a sliding block 21 is arranged on the outer side of each first sliding groove 22 in a sliding manner, the telescopic end of the third air pressure rod 20 is arranged on one side of the sliding block 21, first rotating arms 24 are arranged on two sides of the sliding block 21 in a rotating manner, one end of each first rotating arm 24 is arranged on one end of a connecting rod 26, the other end of each connecting rod 26 is arranged on the other end of a second rotating arm 29 in a sliding manner, the inner side of the second rotating arm 29 is arranged on the center of the outer side of the transmission seat 18 in a rotating manner, two;
all be provided with guide plate 32 below the inside both sides of casing 1, servo motor 30 is installed to casing 1 other end outside below, and servo motor 30 output just is located casing 1 internally mounted and has pivot 34, and second commentaries on classics board 31 is installed in the pivot 34 outside.
The fireproof heat-insulation coating box 2 and the water tank 3 filled with coating are installed at the top of the shell 1, an observation window is arranged on the outer side of the shell 1, the coating box 2 is in conduction connection with a plurality of spray heads 16 at one end through a coating pump and a pipeline, the water tank 3 is in conduction connection with a plurality of spray heads 16 at the other end through a water pump and a pipeline, and the pipe body is cleaned and sprayed through the coating box 2, the water tank 3 and the spray heads 16.
An electric sliding rail 14 is installed at the top of the inner side of the shell 1, a sliding seat 15 is slidably installed on the electric sliding rail 14, and the sliding seat 15 drives a spray head 16 to move back and forth on the electric sliding rail 14, so that the pipe body is sprayed back and forth.
The support 10 is installed to lifter plate 13 one side, and T type spout has been seted up to support 10 one side, and rack 9 one side is provided with T type slider, and T type slider slidable mounting is in T type spout, and when the flexible rack 9 round trip movement of drive of second pneumatic rod 7, through T type slider and T type spout cooperation assurance rack 9 removal stability.
A limiting slide rod 28 is mounted at the other end of the connecting rod 26, a second slide groove 27 is formed in the second rotating arm 29, the other end of the connecting rod 26 is slidably mounted in the second slide groove 27 through the limiting slide rod 28, a spring 25 is sleeved between the first rotating arm 24 and the second rotating arm 29 on the outer side of the connecting rod 26, the connecting rod 26 moves in the second slide groove 27 of the second rotating arm 29 through the limiting slide rod 28, the spring 25 is compressed, and the outer side of the transmission seat 18 can be in elastic contact with the inner side of the tube body through elastic deformation of the spring 25.
The drive wheel is all installed at the inside both ends of driving seat 18, and the inside outside of driving seat 18 is rotated and is installed a plurality of leading wheel, drive wheel and a plurality of leading wheel pass through the track transmission and connect, power motor is installed in the 18 one end outsides of driving seat, and the power motor output is connected with a drive wheel, and the power motor work through driving seat 18 drives the drive wheel and rotates, and then drives the track and a plurality of leading wheel transmission, drives the body and moves to the support column 17 other end.
Fixed ears 35 are all installed to second commentaries on classics board 31 bottom side both ends heart department, fixed ear 35 and pivot 34 fixed connection, and the inside bottom side of casing 1 is provided with two hold up tanks 33 through the baffle, and the second changes board 31 and the guide plate 32 outside and the casing 1 inboard all is provided with the polytetrafluoroethylene film, avoids water and coating adhesion.
Through reasonable structural design, the outer side of the pipe body of the MPP power cable protection pipe is sprayed with a fireproof heat insulation layer, and the fireproof heat insulation coating formed by mixing organic silicon modified epoxy resin, graphite powder, nano calcium carbonate, an antistatic agent, talcum powder, pigment and deionized water in raw material proportion is sprayed on the outer side of the pipe body through a spraying device, so that the MPP power cable protection pipe has the fireproof heat insulation function; during the preparation process of the MPP power cable protection pipe, when the spraying device is used for spraying fireproof heat insulation paint, the first air pressure rod 6 of the rotating mechanism 4 extends to drive the lifting plate 13 to translate, and then the support column 17 connected with the first rotating plate 11 is driven to move towards one end until one end of the support column 17 is positioned in the pipe body, at the moment, the third air pressure rod 20 on the mounting lug 19 extends to drive the sliding block 21 to move in the first sliding groove 22, the sliding block 21 moves and simultaneously acts on the first rotating arm 24, the connecting rod 26 and the second rotating arm 29, and then the transmission seat 18 is driven to move downwards in the rotating guide of the connecting rotating arm 23 until the transmission seat 18 is contacted with the inner wall of the pipe body, so that the MPP power cable protection pipe bodies with different sizes and specifications are limited and fixed, then the power motor of the transmission seat 18 works to drive the transmission wheel to rotate, and further drive the crawler, the pipe body is driven to move towards the other end of the support column 17 until the pipe body is completely moved into the shell 1, so that the limiting and moving of the pipe body are completed, the pipe body is conveniently and quickly fixed, and the limiting can be performed on the inner side of the pipe body, so that the influence on the subsequent spraying process on the outer side of the pipe body is avoided; when the slide block 21 acts on the first rotating arm 24, the connecting rod 26 and the second rotating arm 29 in a moving way, the connecting rod 26 moves in the second sliding groove 27 of the second rotating arm 29 through the limiting slide rod 28, the spring 25 is compressed, and the outer side of the transmission seat 18 can be in elastic contact with the inner side of the pipe body through the elastic deformation of the spring 25, so that the inner side of the pipe body is prevented from being damaged; in the cleaning and paint spraying processes, the sliding seat 15 drives the spray head 16 to move back and forth on the electric sliding rail 14, meanwhile, the second air pressure rod 7 stretches and retracts to drive the rack 9 to move back and forth, so as to drive the meshed gear 8 to rotate, the gear 8 and the first rotating plate 11 coaxially rotate, so as to drive the support column 17 and the pipe body to rotate back and forth, and the periphery of the pipe body is comprehensively and uniformly cleaned and sprayed with paint; when the water pump works to pressurize the water in the water tank 3 and spray the water from the spray head 16 at one end, and the pipe body is cleaned, the servo motor 30 drives the rotating shaft 34 to rotate, the horizontal second rotating plate 31 rotates clockwise by 30 degrees, the cleaned water falls into the storage tank 33 at one side through the top sides of the guide plate 32 and the second rotating plate 31, the paint in the paint tank 2 is pressurized and sprayed from the spray head 16 at the other end through the work of the paint pump, when the pipeline is sprayed, the servo motor 30 drives the rotating shaft 34 to rotate, the horizontal second rotating plate 31 rotates anticlockwise by 60 degrees, the sprayed fireproof heat-insulation paint falls into the storage tank 33 at the other side through the top sides of the guide plate 32 and the second rotating plate 31, the collection and the reutilization are facilitated, and the production cost of the MPP power cable protection pipe is greatly reduced.
The working principle of the spraying device is as follows: the first air pressure rod 6 of the rotating mechanism 4 extends to drive the lifting plate 13 to translate, and further drive the supporting column 17 connected with the first rotating plate 11 to move towards one end until one end of the supporting column 17 is positioned in the pipe body, at the moment, the third air pressure rod 20 on the mounting lug 19 extends to drive the sliding block 21 to move in the first sliding groove 22, the sliding block 21 moves and simultaneously acts on the first rotating arm 24, the connecting rod 26 and the second rotating arm 29, and further drives the transmission seat 18 to move in the rotating guide direction of the connecting rotating arm 23 until the transmission seat 18 is contacted with the inner wall of the pipe body, at the moment, the power motor of the transmission seat 18 works to drive the transmission wheel to rotate, and further drives the track to transmit on the transmission wheel and a plurality of guide wheels, so as to drive the pipe body to move towards the other end of the supporting column 17 until the pipe body is completely moved into the shell body 1, then the paint in the paint box 2 is pressurized by the paint pump to be sprayed out from the spray head 16 at the other end, the pipeline is painted, in the process of cleaning and painting, the slide seat 15 drives the spray head 16 to move back and forth on the electric slide rail 14, meanwhile, the second air pressure rod 7 stretches and retracts to drive the rack 9 to move back and forth, further, the meshed gear 8 is driven to rotate, the gear 8 and the first rotating plate 11 coaxially rotate, further, the support column 17 and the pipe body are driven to rotate back and forth, and the periphery of the pipe body is comprehensively and uniformly cleaned and painted.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The utility model provides a thermal-insulated MPP power cable protection tube of fire prevention, its characterized in that, includes body and fire prevention insulating layer, body surface spraying has the fire prevention insulating layer, the weight part ratio of each raw materials of body is:
100-120 parts of polypropylene resin, 2-5 parts of tackifier, 12-18 parts of plasticizer, 8-12 parts of lubricant, 0.5-2 parts of antioxidant, 0.05-2 parts of light stabilizer, 0.1-0.5 part of pigment and 10-20 parts of deionized water;
the concrete preparation process of the pipe body is as follows:
pouring the tackifier and deionized water into the charging barrel and stirring for 21-25 min; and then, pouring the polypropylene resin, the plasticizer, the lubricant, the antioxidant, the light stabilizer and the pigment into a charging barrel, stirring for 6-8min at a stirring speed of 120 plus 180r/min to obtain a mixture for producing a pipe body, adding the pipe body mixture into a double-screw extrusion granulator, extruding the pipe body of the thermal MPP power cable protection pipe, wherein the extrusion speed of the double-screw extrusion granulator is 100 plus 150r/min, cooling the strip of the pipe body material of the thermal MPP power cable protection pipe, granulating to obtain granules of the pipe body of the MPP power cable protection pipe, melting the granules of the pipe body of the MPP power cable protection pipe, and performing preplasticizing, cooling and molding by a die through a double-screw extruder.
2. The MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 1, wherein the specific preparation process of the fire prevention and heat insulation layer is as follows:
adding 15-20 parts by weight of organic silicon modified epoxy resin, 5-8 parts by weight of graphite powder, 2-3 parts by weight of nano calcium carbonate, 3-5 parts by weight of antistatic agent, 15-20 parts by weight of talcum powder, 2-4 parts by weight of pigment and 40-50 parts by weight of deionized water into an emulsifying device, stirring for 15-20min at a stirring speed of 350-400r/min to prepare the fireproof heat-insulating coating, and then uniformly spraying the fireproof heat-insulating coating on the surface of the MPP power cable protection pipe body through a spraying device to form the fireproof heat-insulating layer.
3. The method for manufacturing a fire-proof and heat-insulating MPP power cable protection tube according to claim 1, wherein the method for manufacturing the MPP power cable protection tube comprises the following specific operation steps:
s1: discharging the raw materials for manufacturing the MPP power cable protection pipe body out of a warehouse, drying, sucking the raw materials into a hopper by a material sucking device according to a formula, and discharging the raw materials into a charging barrel by the hopper;
s2: the raw materials entering the charging barrel in the step S1 are subjected to screw shearing, melting, mixing and stirring, extrusion and preplasticizing and then preliminarily molded, and the pipe body of the preliminarily molded MPP power cable protection pipe is cooled by a sizing sleeve to accurately limit the outer diameter structure of the cable protection pipe;
s3: sending the MPP power cable protection pipe body subjected to sizing in the step S2 into a vacuum spraying box for spraying and cooling, and further curing and shaping;
s4: printing characters on the MPP power cable protection pipe body which is subjected to spray cooling and shaping in the step S4 by using an ink-jet printer, and then drawing the characters to a cutting machine by using a tractor to cut the characters into sections so as to obtain the MPP power cable protection pipe body;
s5: the MPP power cable protection pipe body is placed inside a spraying device to be sprayed with a coating, a rotating mechanism (4) drives a supporting column (17) to move towards one end until one end of the supporting column (17) is located inside the pipe body, at the moment, a sliding block (21) is driven to move through extension of a third air pressure rod (20) and acts on a first rotating arm (24), a connecting rod (26) and a second rotating arm (29), a transmission seat (18) is further driven to move downwards in a rotating guide of a connecting rotating arm (23) until the transmission seat (18) is contacted with the inner wall of the pipe body, at the moment, a power motor of the transmission seat (18) works to drive the pipe body to move towards the other end of the supporting column (17), and after the pipe is sprayed, the fireproof heat-insulation coating is sprayed on the rotating pipe.
4. The method for manufacturing the MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 3, wherein the spraying device comprises a shell (1), a rotating mechanism (4), a sliding seat (15), a spray head (16), a servo motor (30) and a second rotating plate (31), the sliding seat (15) is slidably mounted at the top of the inner side of the shell (1), a plurality of spray heads (16) are respectively mounted at two ends of the bottom of the sliding seat (15), and the rotating mechanism (4) is mounted at the outer side of one end of the shell (1);
the rotating mechanism (4) comprises a mounting seat (5), a first air pressure rod (6), a second air pressure rod (7), a gear (8), a rack (9), a first rotating plate (11) and a lifting plate (13), wherein the mounting seat (5) is fixedly connected with the outer wall of one end of the shell (1), a plurality of first air pressure rods (6) are mounted at two ends of the inner side of the mounting seat (5), the telescopic ends of the first air pressure rods (6) are connected with one side of the lifting plate (13), a bearing (12) is mounted at the center of the inner part of the lifting plate (13), a connecting shaft is mounted on the inner side of the bearing (12) in a penetrating manner, the first rotating plate (11) is mounted at one end of the connecting shaft, the gear (8) is mounted at the other end of the connecting shaft, the second air pressure rod (7) is mounted at the bottom side of the lifting plate (13), and the rack (9) is meshed with the gear (8);
first commentaries on classics board (11) inboard just is located casing (1) internally mounted and has support column (17), installation ear (19) have all been installed to support column (17) both ends top and below, installation ear (19) are connected with third pneumatic rod (20) one end, first spout (22) have all been seted up to support column (17) both ends top and below both sides, first spout (22) outside slidable mounting has slider (21), the flexible end of third pneumatic rod (20) and slider (21) one side-mounting, slider (21) both sides are all rotated and are installed first rocking arm (24), first rocking arm (24) one end and connecting rod (26) one end installation, connecting rod (26) other end and second rocking arm (29) slidable mounting, and second rocking arm (29) inboard and transmission seat (18) outside center department rotate the installation, transmission seat (18) outside both ends just are located second rocking arm (29) inboard and are connected rocking arm (23) one end and rotate installation The other end of the connecting rotating arm (23) is rotatably arranged with the supporting column (17);
casing (1) inside both sides below all is provided with guide plate (32), servo motor (30) are installed to casing (1) other end outside below, servo motor (30) output just is located casing (1) internally mounted and has pivot (34), second commentaries on classics board (31) are installed in pivot (34) outside.
5. The method for manufacturing the MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 4, wherein a fire prevention and heat insulation paint box (2) filled with paint and a water tank (3) are installed on the top of the shell (1), an observation window is arranged on the outer side of the shell (1), the paint box (2) is in conduction connection with a plurality of spray heads (16) at one end through a paint pump and a pipeline, and the water tank (3) is in conduction connection with a plurality of spray heads (16) at the other end through a water pump and a pipeline.
6. A method for manufacturing an MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 4, wherein a motor-driven sliding rail (14) is installed on the top of the inner side of the shell (1), and the sliding base (15) is slidably installed on the motor-driven sliding rail (14).
7. The manufacturing method of the MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 4, wherein a bracket (10) is installed on one side of the lifting plate (13), a T-shaped sliding groove is formed on one side of the bracket (10), a T-shaped sliding block is arranged on one side of the rack (9), and the T-shaped sliding block is slidably installed in the T-shaped sliding groove.
8. The manufacturing method of the MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 4, wherein a limiting slide bar (28) is installed at the other end of the connecting rod (26), a second slide groove (27) is formed in the second rotating arm (29), the other end of the connecting rod (26) is slidably installed in the second slide groove (27) through the limiting slide bar (28), and a spring (25) is sleeved outside the connecting rod (26) and between the first rotating arm (24) and the second rotating arm (29).
9. The method for manufacturing the MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 4, wherein driving wheels are installed at two ends of the inside of the transmission base (18), a plurality of guide wheels are rotatably installed on the outer side of the inside of the transmission base (18), the driving wheels and the guide wheels are connected through a crawler belt, a power motor is installed on the outer side of one end of the transmission base (18), and the output end of the power motor is connected with one driving wheel.
10. The method for manufacturing the MPP power cable protection tube with fire prevention and heat insulation functions as claimed in claim 4, wherein fixing lugs (35) are installed at two end centers of the bottom side of the second rotating plate (31), the fixing lugs (35) are fixedly connected with the rotating shaft (34), two storage grooves (33) are formed in the bottom side of the interior of the shell (1) through partition plates, and polytetrafluoroethylene films are arranged on the outer sides of the second rotating plate (31) and the guide plate (32) and on the inner side of the shell (1).
CN202010281728.1A 2020-04-11 2020-04-11 Fireproof and heat-insulating MPP power cable protection pipe and preparation method thereof Withdrawn CN111286125A (en)

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CN202010281728.1A CN111286125A (en) 2020-04-11 2020-04-11 Fireproof and heat-insulating MPP power cable protection pipe and preparation method thereof

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Application Number Priority Date Filing Date Title
CN202010281728.1A CN111286125A (en) 2020-04-11 2020-04-11 Fireproof and heat-insulating MPP power cable protection pipe and preparation method thereof

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112271650A (en) * 2020-11-26 2021-01-26 江南云 Cable tectorial membrane auxiliary device to regional erection line in deep sea
CN113861562A (en) * 2021-10-27 2021-12-31 江西平高电器有限公司 Flame-retardant and heat-insulating MPP power cable protection pipe and production process thereof
CN114714732A (en) * 2022-05-06 2022-07-08 湖北恒祥科技股份有限公司 Rubber-plastic heat-insulating material with good fireproof performance
CN114725849A (en) * 2022-03-29 2022-07-08 四川省商投信息技术有限责任公司 Intelligent building security terminal wiring and installation method
CN116494496A (en) * 2023-06-26 2023-07-28 河北汇东管道股份有限公司 Vacuum forming seamless outer protection bent pipe production equipment
CN116728732A (en) * 2023-06-27 2023-09-12 杭州鑫璐实业有限公司 Raw material hot-melting mixing device and method for MPP pipe production

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112271650A (en) * 2020-11-26 2021-01-26 江南云 Cable tectorial membrane auxiliary device to regional erection line in deep sea
CN112271650B (en) * 2020-11-26 2022-08-30 国网上海市电力公司 Cable tectorial membrane auxiliary device to regional erection line in deep sea
CN113861562A (en) * 2021-10-27 2021-12-31 江西平高电器有限公司 Flame-retardant and heat-insulating MPP power cable protection pipe and production process thereof
CN114725849A (en) * 2022-03-29 2022-07-08 四川省商投信息技术有限责任公司 Intelligent building security terminal wiring and installation method
CN114714732A (en) * 2022-05-06 2022-07-08 湖北恒祥科技股份有限公司 Rubber-plastic heat-insulating material with good fireproof performance
CN116494496A (en) * 2023-06-26 2023-07-28 河北汇东管道股份有限公司 Vacuum forming seamless outer protection bent pipe production equipment
CN116728732A (en) * 2023-06-27 2023-09-12 杭州鑫璐实业有限公司 Raw material hot-melting mixing device and method for MPP pipe production
CN116728732B (en) * 2023-06-27 2024-04-02 杭州鑫璐实业有限公司 Raw material hot-melting mixing device and method for MPP pipe production

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