CN115139606A - PVC pipe with built-in heating device and heat insulation layer and preparation method thereof - Google Patents

PVC pipe with built-in heating device and heat insulation layer and preparation method thereof Download PDF

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Publication number
CN115139606A
CN115139606A CN202210699023.0A CN202210699023A CN115139606A CN 115139606 A CN115139606 A CN 115139606A CN 202210699023 A CN202210699023 A CN 202210699023A CN 115139606 A CN115139606 A CN 115139606A
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CN
China
Prior art keywords
layer
pvc
parts
strip
pipe
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Application number
CN202210699023.0A
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Chinese (zh)
Inventor
高云方
王勇豪
沈小宁
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Zhejiang Xinjie New Material Technology Co ltd
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Zhejiang Xinjie New Material Technology Co ltd
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Priority to CN202210699023.0A priority Critical patent/CN115139606A/en
Publication of CN115139606A publication Critical patent/CN115139606A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • 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
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/35—Ohmic-resistance heating
    • F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/028—Composition or method of fixing a thermally insulating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

Abstract

The application discloses a PVC pipe with a built-in heating device and a heat insulation layer and a preparation method thereof. The PVC pipe of built-in heating device and heat preservation includes the pipe body, and the pipe body includes inlayer, middle level, skin, heat preservation, and the heat preservation includes following raw materials: the PVC pipe comprises a PVC resin I, a plasticizer I, a PVC stabilizer I, calcium powder, a foaming agent and EBS, wherein a heating wire is arranged between an inner layer and a middle layer, a plug and a temperature controller are arranged on a pipe body, and a temperature sensing probe is arranged on the temperature controller; the preparation method comprises the following steps: s1, preparing an inner layer; s2, preparing a middle layer; s3, preparing a network cable layer; s4, preparing an outer layer; and S5, preparing a pipe body. This application adopts heat preservation, heater strip and temperature controller, and the temperature sensing probe on the temperature controller contacts with the heat preservation outer wall to start or close the heater strip according to the temperature, this internal water of suppression pipe freezes, and utilizes the heat preservation to restrain the heat and scatter and disappear, plays better heat preservation effect, thereby has reduced the condition that the water pipe takes place to break under low temperature environment.

Description

PVC pipe with built-in heating device and heat insulation layer and preparation method thereof
Technical Field
The application relates to the field of PVC pipes, in particular to a PVC pipe with a built-in heating device and a built-in heat insulation layer and a preparation method thereof.
Background
In the field of agriculture and forestry, water pipes are commonly used for irrigating agricultural and forestry crops.
When the temperature is lower winter, especially in northern areas, the water in the water pipe is influenced by the temperature and is easy to freeze to cause volume expansion, and the water pipe is broken when serious, so that the agriculture and forestry irrigation operation is influenced and needs to be improved.
Disclosure of Invention
In order to improve the problem that water pipe rupture is easily caused by the freezing volume expansion of water inside the water pipe when the temperature is low, the application provides a PVC pipe with a built-in heating device and a heat insulation layer and a preparation method thereof.
First aspect, the application provides a PVC pipe of built-in heating device and heat preservation, adopts following technical scheme:
the utility model provides a PVC pipe of built-in heating device and heat preservation, includes the pipe body, the pipe body is from interior to exterior including inlayer, middle level and skin, still includes the heat preservation, the heat preservation cladding in the skin outside, the heat preservation includes following parts by weight's raw materials: 100-110 parts of PVC resin I, 50-60 parts of plasticizer I, 1-2 parts of PVC stabilizer I, 8-12 parts of calcium powder, 6-8 parts of foaming agent, 0.2-0.3 part of EBS and 0.5-1 part of toner I;
the pipe comprises an inner layer, a middle layer and a pipe body, wherein a plurality of heating wires are circumferentially arranged between the inner layer and the middle layer, a plug and a temperature controller are arranged on the pipe body, the output end of the plug is connected with the input end of the temperature controller, the output end of the temperature controller is connected with the input end of the heating wires, a temperature sensing probe is arranged on the temperature controller, and the temperature sensing probe is used for being abutted to the heat preservation layer.
Through adopting above-mentioned technical scheme, be connected with the temperature controller on the heater strip, temperature sensing probe and the contact of heat preservation outer wall on the temperature controller, thereby start or close the heater strip according to the temperature, when temperature sensing probe senses the heat preservation high temperature, the disconnection of temperature controller output signal control plug and heater strip, realize closing of heater strip, when the temperature is lower, plug and heater strip are connected, temperature controller output signal control heater strip heating pipe body, make pipe body temperature rise, it freezes to restrain this internal water of pipe, and utilize the heat preservation to restrain the heat and scatter and disappear, play better heat preservation effect, thereby reduced the water pipe and taken place the ruptured condition under low temperature environment.
Calcium powder is added into the heat preservation layer, plays a role of a nucleus, generates a certain gathering effect, can adsorb foaming gas to form a bubble nucleus, controls the number of bubbles, inhibits the bubbles from expanding too fast, makes the bubbles finer, enables the foaming to be smoother, and is favorable for improving the heat preservation effect of the heat preservation layer.
Preferably, the inner layer comprises the following raw materials in parts by weight: 100-110 parts of PVC resin DH-3000, 50-70 parts of plasticizer IV, 1-2 parts of PVC stabilizer IV, 0.1-0.2 part of EBS, 20-25 parts of hydrolysis-resistant polyether TPU and 20-25 parts of CPE;2-3 parts of titanium dioxide.
By adopting the technical scheme, the PVC resin DH-3000 is adopted, a network structure is favorably formed in the inner layer after plasticizing, the overall strength of the pipe body is improved, the plasticizer can be locked in the network structure, the plasticizer is prevented from being separated out, the condition that water quality is polluted by the plasticizer is reduced, the environmental protection performance is better, the irrigation effect on crops is better, and the deposition of chemical substances such as the plasticizer in the crops is reduced.
The hydrolysis-resistant polyether TPU can form a network structure in the plasticized composite material, is crossed with the network structure formed by PVC resin DH-3000, has a better inhibition effect on precipitation of a plasticizer, is expensive, and can reduce the production cost while forming the network structure by matching CPE with the hydrolysis-resistant polyether TPU.
Preferably, the middle layer comprises the following raw materials in parts by weight: 100-110 parts of PVC resin II and 50-60 parts of PVC resin
A second plasticizer, 1-2 parts of a second PVC stabilizer and 0.1-0.2 part of EBS.
Preferably, the outer layer comprises the following raw materials in parts by weight: 100-110 parts of PVC resin III, 50-60 parts
Plasticizer III, 1-2 parts of PVC stabilizer III, 0.1-0.2 part of EBS and 0.2-0.5 part of toner II.
Preferably, the lowest insulation thickness of the inner layer is 1.1-1.5mm, the lowest insulation thickness of the middle layer is 1.0-1.4mm, and the thickness of the outer layer is 1.0-1.2mm.
Through adopting above-mentioned technical scheme, the security that the water pipe used has been improved.
Preferably, a net wire layer is arranged between the middle layer and the PVC outer layer.
Through adopting above-mentioned technical scheme, set up the net twine layer, improve the holistic tensile structural strength of pipe body for the pipe body is more durable.
Preferably, the temperature controller is connected with a connecting sleeve in a sliding manner, the connecting sleeve slides to be close to or far away from the temperature sensing probe, an accommodating groove is formed in the connecting sleeve, the temperature controller is located in the accommodating groove, a shaping rod is connected in the connecting sleeve in a sliding manner, and an elastic strip is arranged on the shaping rod;
the elastic strip is provided with a positioning rod, an elastic piece is arranged in the connecting sleeve, the elastic piece tensions the shaping rod to enable the positioning rod to be abutted against the outer side wall of the connecting sleeve, the connecting sleeve is provided with an extension strip, the extension strip and the positioning rod are respectively positioned on two opposite sides of the notch of the accommodating groove, and the extension strip is provided with a notch for the elastic strip to penetrate through;
the elastic strip is provided with a plurality of through holes, the through holes are distributed at intervals along the length direction of the elastic strip, the connecting sleeve is provided with clamping blocks, and the through holes are used for the clamping blocks to be clamped in.
Through adopting above-mentioned technical scheme, when needs use the temperature controller, with temperature sensing probe butt in the lateral wall of heat preservation, then pull out the elastic strip, the enough elastic strip of distance that the elastic strip was pulled out takes place deformation and embraces the periphery of heat preservation tightly, goes into corresponding perforation with the fixture block card again to the length that fixed elastic strip stretches out.
Then wear to establish the breach behind the heat preservation periphery with the elasticity strip for the locating lever is located the one side that the elasticity strip was kept away from to the extension strip, and at this moment, the elasticity strip is stretched, loosens the elasticity strip, and elasticity strip shrink makes the locating lever support tightly in the extension strip, can realize the location of elasticity strip, and at this moment, the elasticity strip is held tightly the heat preservation and is realized being connected between temperature controller and the pipe body, makes temperature sensing probe contact with the heat preservation lateral wall all the time, is favorable to temperature sensing probe to start or close the heater strip according to the temperature of heat preservation.
When not using the temperature controller, remove the adapter sleeve and make flexure strip and temperature sensing probe aim at, then pull out the elastic strip and go into the length that corresponds the fixed elastic strip of perforation and stretch out with the fixture block card, then wear to establish the location that the breach realized the elastic strip behind the temperature sensing probe with the elastic strip, at this moment, shelter from temperature sensing probe through the elastic strip, reduced the condition that temperature sensing probe was worn and torn or collided with by the foreign object when transportation or placing, be favorable to the stable performance response effect of temperature sensing probe when using.
Preferably, when the elasticity strip is worn to establish when the breach, the elasticity strip is close to be equipped with a plurality of lugs that are interval distribution on the lateral wall of holding tank bottom, the temperature sensing probe stretches out the holding tank notch, still be equipped with a plurality of incisions on the elasticity strip, it is a plurality of the incision is on a parallel with the length direction of elasticity strip.
Through adopting above-mentioned technical scheme, set up lug and breach, the heat preservation is the foaming layer, therefore, the surface of heat preservation is the matte, when the elasticity strip supports tightly in the heat preservation periphery, the sunken department of matte is gone into to the lug card, improve the stability of relative positioning between adapter sleeve and the heat preservation, when the elasticity strip supports tightly in temperature sensing probe, the elasticity strip takes place to deform and makes the incision that the part is located around the temperature sensing probe widen, make in the edge card of temperature sensing probe goes into the incision, and the existence of lug can further widen the incision, carry on spacingly in temperature sensing probe through notched inner wall butt in temperature sensing probe, reduce the condition that takes place relative movement between temperature sensing probe and the adapter sleeve, improve the stability that the elasticity strip sheltered from to temperature sensing probe.
In a second aspect, the application provides a preparation method of a PVC pipe with a built-in heating device and a heat preservation layer, which adopts the following technical scheme:
a preparation method of a PVC pipe with a built-in heating device and a heat insulation layer comprises the following steps:
s1, preparing an inner layer: stirring PVC resin DH-3000, PVC stabilizer IV, EBS, hydrolysis-resistant polyether TPU, CPE and titanium dioxide at 160-190 ℃ for 20-30min, adding plasticizer IV, stirring for 50-60min, and extruding and molding by an extruding device together with a heating wire to form an inner layer;
s2, preparing a middle layer: stirring and reacting the PVC resin II, the PVC stabilizer II and the EBS at 160-190 ℃ for 20-30min, then adding the plasticizer II, stirring and reacting for 50-60min to obtain a mixture A, and uniformly extruding the mixture A into a layer on the outer side of the inner layer to obtain a middle layer;
s3, preparing a network cable layer: winding the mesh wire on the outer side of the middle layer in the circumferential direction to obtain a mesh wire layer;
s4, preparing an outer layer: stirring and reacting PVC resin III, PVC stabilizer III, EBS and blue powder for 20-30min at 160-190 ℃, adding plasticizer III, stirring and reacting for 50-60min to obtain a mixture B, and uniformly extruding the mixture B into a layer on the outer side of the middle layer in the circumferential direction to obtain an outer layer;
s5, preparing a pipe body: stirring and reacting PVC resin I, PVC stabilizer I, calcium powder, foaming agent, EBS and black powder at 160-190 ℃ for 20-30min, adding plasticizer I, stirring and reacting for 50-60min to obtain mixture C, and uniformly extruding the mixture C to form a layer on the outer side of the outer layer to obtain the heat-insulating layer, namely the pipe body.
By adopting the technical scheme, the heating wire is extruded along with the inner layer and is arranged in the inner layer, so that the situation of electric leakage when a gap appears between the inner layer and the middle layer due to the fact that the heating wire is positioned between the inner layer and the middle layer can be reduced.
Preferably, the extruding device comprises an extruder, an extruding die head arranged on the extruder and a winding drum rotationally connected to the extruder, the extruding die head is provided with a discharge passage, the outer side wall of the extruding die head is provided with a wire inlet communicated with the discharge passage, the wire inlet is used for the penetration of the heating wire, the heating wire is arranged in a manner of inclining inwards in the direction away from the extruder, and the winding drum is used for the winding of the heating wire.
Through adopting above-mentioned technical scheme, when the inlayer is extruded, wear to locate inside the heater strip in entrance hole stretches into the inlayer to drive the reel along with the inlayer is extruded and is rolled, extrude when realizing heater strip and inlayer, and make the heater strip arrange the inlayer in, make processing heater strip and inlayer more convenient.
In summary, the present application has the following beneficial effects:
1. because this application adopts heat preservation, heater strip and temperature controller, temperature sensing probe and the contact of heat preservation outer wall on the temperature controller to start or close the heater strip according to the temperature, restrain this internal water of pipe and freeze, and utilize the heat preservation to restrain the heat and scatter and disappear, play better heat preservation effect, thereby reduced the condition that the water pipe takes place to break under low temperature environment.
2. This application adopts to add calcium powder in the heat preservation, and calcium powder plays the effect of nuclear, produces certain gathering effect, can adsorb foaming gas and form the bubble nucleus, makes the bubble thinner, and it is more smooth and easy to foam, is favorable to improving the heat preservation effect of heat preservation.
3. According to the preparation method, the heating wire is extruded along with the inner layer and is arranged in the inner layer, so that the situation of electric leakage when a gap appears between the inner layer and the middle layer due to the fact that the heating wire is positioned between the inner layer and the middle layer can be reduced, and the use safety of the pipe body is improved.
4. This application sets up the adapter sleeve on the temperature controller, when needs use the temperature controller, embraces the heat preservation tightly through the elastic strip and can realize being connected between temperature controller and the pipe body, when not using the temperature controller, supports tight temperature sensing probe through the elastic strip and shelters from temperature sensing probe, has reduced the condition that temperature sensing probe is worn and torn or collides with, is favorable to the stable performance response effect of temperature sensing probe when using.
5. Through set up lug and breach on the elasticity strip, when the elasticity strip supports tightly in the heat preservation periphery, improve the stability of relative positioning between adapter sleeve and the heat preservation, when the elasticity strip supports tightly in temperature sensing probe, carry on spacingly in temperature sensing probe through notched inner wall butt in temperature sensing probe, improve the stability that the elasticity strip sheltered from to temperature sensing probe.
Drawings
FIG. 1 is a cross-sectional view of a pipe body of the present application;
FIG. 2 is an overall view of the extrusion apparatus of the present application;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view of the pipe body with a plug and a thermostat;
FIG. 5 is a schematic structural view of a part of the pipe body after a plug and a temperature controller are installed thereon, mainly showing the structure of a sliding block and a sliding chute;
FIG. 6 is a sectional view of the pipe body with a plug and a temperature controller installed thereon, mainly showing the structure of the shaping rod and the elastic member;
fig. 7 is a state view of the temperature sensing probe shielded by the elastic strip, mainly showing the structure of the slit.
Description of reference numerals: 1. a tube body; 11. an inner layer; 12. a middle layer; 13. a network cable layer; 14. an outer layer; 15. a heat-insulating layer; 2. heating wires; 3. a plug; 4. a temperature controller; 41. a temperature sensing probe; 5. connecting sleeves; 51. accommodating grooves; 52. a slipping cavity; 53. an outlet; 6. a slider; 61. a chute; 7. a shaping rod; 8. an elastic strip; 81. a bump; 82. cutting; 9. positioning a rod; 10. a clamping block; 101. perforating; 16. an elastic member; 17. an extension bar; 171. a notch; 181. an extruder; 182. an extrusion die head; 183. a reel; 19. a discharge channel; 20. a wire inlet hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-7 and examples.
Figure BDA0003703772610000051
The raw materials used in the following embodiments may be those conventionally commercially available unless otherwise specified.
Examples
Example 1
Referring to fig. 1, the application discloses a PVC pipe with a built-in heating device and a heat insulation layer, which comprises a pipe body 1, wherein the pipe body 1 comprises an inner layer 11, a middle layer 12, a network cable layer 13, an outer layer 14 and a heat insulation layer 15 from inside to outside, the lowest insulation thickness of the inner layer 11 is 1.1mm, the lowest insulation thickness of the middle layer 12 is 1.0mm, and the thickness of the outer layer 14 is 1.0mm.
Referring to fig. 1, a plurality of heating wires 2 are fixed in the inner layer 11, the plurality of heating wires 2 are located between the inner layer 11 and the middle layer 12 and are circumferentially and uniformly distributed at intervals, and the lengths of the heating wires 2 are arranged along the length of the inner layer 11.
The inner layer 11 comprises the following raw materials: PVC resin DH-3000, plasticizer IV, PVC stabilizer IV, EBS, hydrolysis-resistant polyether TPU and CPE; titanium dioxide; the middle layer 12 comprises the following raw materials: PVC resin II, plasticizer II, PVC stabilizer II and EBS; the outer layer 14 comprises the following raw materials: PVC resin III, 50-60 parts of plasticizer III, 1-2 parts of PVC stabilizer III, 0.1-0.2 part of EBS and toner II; the heat-insulating layer 15 comprises the following raw materials in parts by weight: the PVC resin I, the plasticizer I, the PVC stabilizer I, the calcium powder, the foaming agent, the EBS and the toner I are shown in the following table 1-4.
The preparation method of the PVC pipe internally provided with the heating device and the heat insulation layer comprises the following steps:
s1, preparing an inner layer 11: stirring PVC resin DH-3000, PVC stabilizer IV, EBS, hydrolysis-resistant polyether TPU, CPE and titanium dioxide at 160 ℃ for reaction for 30min, adding plasticizer IV, stirring for reaction for 60min, and extruding and molding together with the heating wire 2 by an extruding device to form an inner layer 11;
s2, preparing a middle layer 12: stirring and reacting PVC resin II, PVC stabilizer II and EBS at 160 ℃ for 30min, adding plasticizer II, stirring and reacting for 60min to obtain mixture A, and uniformly extruding the mixture A into a layer on the outer side of the inner layer 11 in the circumferential direction to obtain a middle layer 12;
s3, preparing the network cable layer 13: winding the net wire on the outer side of the middle layer 12 in the circumferential direction to obtain a net wire layer 13;
s4, preparing an outer layer 14: stirring and reacting PVC resin III, PVC stabilizer III, EBS and blue powder for 30min at 160 ℃, adding plasticizer III, stirring and reacting for 60min to obtain a mixture B, and uniformly extruding the mixture B into a layer on the outer side of the middle layer 12 in the circumferential direction to obtain an outer layer 14;
s5, preparing the pipe body 1: stirring and reacting PVC resin I, PVC stabilizer I, calcium powder, foaming agent, EBS and black powder for 30min at 160 ℃, adding plasticizer I, stirring and reacting for 60min to obtain mixture C, and uniformly extruding the mixture C to form a layer on the outer side of the outer layer 14 in the circumferential direction to obtain the heat-insulating layer 15, thus obtaining the pipe body 1.
Referring to fig. 2 and 3, the extruding device includes an extruder 181, an extruding die head 182 and a plurality of reels 183, the extruding die head 182 is installed at one end of the extruder 181, a discharging channel 19 has been seted up on the extruding die head 182, a plurality of wire inlets 20 have been seted up on the lateral wall of the extruding die head 182, the quantity of a plurality of wire inlets 20 corresponds to the quantity of heater strip 2 on the inner layer 11 one-to-one, a plurality of wire inlets 20 are circumferentially evenly distributed at intervals along the periphery of the extruding die head 182 and all communicate with the discharging channel 19, the wire inlets 20 are used for the heater strip 2 to wear to establish, and the heater strip 2 that wears to locate the wire inlets 20 is inclined inwards towards the direction far away from the extruder 181, so that the distance between the heater strip 2 and the inner wall of the discharging channel 19 gradually increases towards the direction far away from the extruder 181. In this embodiment, the extruder 181 is a plastic extruder.
Referring to fig. 2, the number of the winding drums 183 corresponds to the number of the heating wires 2 on the inner layer 11 one by one, the winding drums 183 are positioned on one side of the extrusion die head 182 close to the extruder 181 and are arranged at intervals with the extrusion die head 182, the winding drums 183 are rotatably connected to the extruder 181, the rotating axes of the winding drums 183 are horizontally arranged, and the winding drums 183 are used for winding the heating wires 2.
In practical use, the extruder 181 is started to extrude the inner layer 11, the heating wire 2 penetrating through the wire inlet hole 20 extends into the inner layer 11, and the winding drum 183 is driven to roll along with the extrusion of the inner layer 11, so that the simultaneous extrusion of the heating wire 2 and the inner layer 11 is realized, and the heating wire 2 is arranged in the inner layer 11.
Referring to fig. 1 and 4, a plug 3 and a temperature controller 4 are fixed on the pipe body 1, an output end of the plug 3 is fixedly connected with an input end of the temperature controller 4, and an output end of the temperature controller 4 is fixedly connected with an input end of the heating wire 2.
Referring to fig. 5, a temperature sensing probe 41 is fixed on the temperature controller 4, the temperature sensing probe 41 is located at one end of the temperature controller 4, and the temperature sensing probe 41 is used for abutting against the outer peripheral wall of the insulating layer 15.
Referring to fig. 5, sliding connection has adapter sleeve 5 on temperature controller 4, holding tank 51 has been seted up on adapter sleeve 5's the lateral wall, temperature controller 4 is located holding tank 51, and temperature sensing probe 41 stretches out the holding tank 51 notch, all be fixed with slider 6 on two relative inside walls of holding tank 51, spout 61 has been seted up on temperature controller 4's the lateral wall, the quantity and the position one-to-one of spout 61 and slider 6, slider 6 is located and corresponds spout 61, adapter sleeve 5 slides through the cooperation of slider 6 and spout 61 and connects on temperature controller 4, and adapter sleeve 5 slides and is close to or keeps away from temperature sensing probe 41.
Referring to fig. 6, a sliding cavity 52 is formed in the connecting sleeve 5, the sliding cavity 52 is located on one side of the accommodating groove 51 parallel to the sliding direction of the connecting sleeve 5, a shaping rod 7 is connected to the connecting sleeve 5 in a sliding manner, the shaping rod 7 is located in the sliding cavity 52, and the shaping rod 7 slides to be close to or far away from the notch of the accommodating groove 51.
Referring to fig. 6, an outlet 53 is formed in the outer side wall of the connecting sleeve 5, the outlet 53 is located on one side of the sliding cavity 52 far away from the accommodating groove 51 and is communicated with the sliding cavity 52, an elastic strip 8 is fixed on the end surface of the shaping rod 7 close to the notch of the accommodating groove 51, and the elastic strip 8 extends out of the connecting sleeve 5 from the outlet 53. The setting of shaping pole 7 is used for opening elastic strip 8, reduces elastic strip 8 and takes place the folding condition in the chamber 52 that slides, and in this embodiment, the material of elastic strip 8 is silica gel.
Referring to fig. 5 and 6, a positioning rod 9 is fixed at the end of the elastic strip 8 far away from the shaping rod 7, the positioning rod 9 is located at the outer side of the connecting sleeve 5, and the length of the positioning rod 9 is greater than the width of the elastic strip 8.
Referring to fig. 6, a clamping block 10 is fixed on the outer side wall of the connecting sleeve 5 close to the outlet 53, the clamping block 10 is located on one side of the outlet 53 close to the notch of the accommodating groove 51, a plurality of through holes 101 are formed in the outer side wall of the elastic strip 8, the through holes 101 are uniformly distributed along the length direction of the elastic strip 8 at intervals, and the clamping block 10 is clamped into the through holes 101.
Referring to fig. 6, an elastic member 16 is fixed on an inner wall of the sliding cavity 52, the elastic member 16 is located on one side of the shaping rod 7 away from the notch of the accommodating groove 51 and is fixedly connected with the shaping rod 7, and the elastic member 16 tightly pulls the shaping rod 7, so that the positioning rod 9 is tightly abutted against an outer side wall of the connecting sleeve 5. In this embodiment, the elastic member 16 is a spring. When the elastic strip 8 is not used, the elastic piece 16 pulls the setting lever 7 so that the elastic strip 8 is retracted into the slide cavity 52.
Referring to fig. 6 and 7, an extension bar 17 is fixed on the outer side wall of the connection sleeve 5 away from the outlet 53, a notch 171 is opened on the end surface of the extension bar 17 away from the outlet 53, and the elastic bar 8 is inserted into the notch 171.
Referring to fig. 6 and 7, when the elastic strip 8 penetrates the notch 171, a plurality of bumps 81 are fixed on the outer side wall of the elastic strip 8 close to the bottom of the accommodating groove 51, the bumps 81 are uniformly distributed at intervals, a plurality of notches 82 are further arranged on the elastic strip 8, the notches 82 are uniformly distributed at intervals along the width direction of the elastic strip 8, and the notches 82 are all parallel to the length direction of the elastic strip 8.
In the in-service use, when needing to use temperature controller 4, with temperature sensing probe 41 butt in the lateral wall of heat preservation 15, then pull out elastic strip 8, enough elastic strip 8 of distance that elastic strip 8 pulled out takes place deformation and hugs closely the periphery of heat preservation 15, go into corresponding perforation 101 with fixture block 10 card again to the length that fixed elastic strip 8 stretched out.
Then wear to establish breach 171 behind bypassing heat preservation 15 periphery with elastic strip 8, make locating lever 9 be located extension strip 17 and keep away from one side of elastic strip 8, at this moment, elastic strip 8 is stretched, loosen elastic strip 8, elastic strip 8 shrink makes locating lever 9 support tightly in extension strip 17, can realize elastic strip 8's location, at this moment, elastic strip 8 holds heat preservation 15 tightly and realizes being connected between temperature controller 4 and the pipe body 1, and go into the sunken department of the rough surface in heat preservation 15 surface and the frictional resistance between elastic strip 8 and the heat preservation 15 through lug 81 card, realize the relative positioning between elastic strip 8 and the heat preservation 15, make temperature sensing probe 41 contact with heat preservation 15 lateral wall all the time.
When not using temperature controller 4, remove adapter sleeve 5 and make flexure strip and temperature sensing probe 41 aim at, then pull out flexure strip 8 and go into the fixture block 10 and correspond the fixed length that flexure strip 8 stretches out of perforation 101, make the enough flexure strip 8 of the distance that flexure strip 8 pulled out take place deformation and support tight temperature sensing probe 41, then wear to establish breach 171 behind temperature sensing probe 41 with flexure strip 8 and realize the location of flexure strip 8, at this moment, flexure strip 8 supports tight temperature sensing probe 41 and shelters from temperature sensing probe 41, and the inner wall butt through incision 82 carries on spacingly in temperature sensing probe 41, the condition that temperature sensing probe 41 was worn and torn or collided by the foreign object when transportation or placing has been reduced.
Example 2
The difference from example 1 is that the contents and parameters of the components of the inner layer 11, the middle layer 12, the outer layer 14 and the heat-insulating layer 15, and the process parameters in the preparation method are different, and the contents of the components are shown in the following tables 1 to 4.
The minimum insulation thickness of the inner layer 11 is 1.5mm, the minimum insulation thickness of the middle layer 12 is 1.4mm, and the thickness of the outer layer 14 is 1.2mm.
The preparation method of the PVC pipe internally provided with the heating device and the heat insulation layer comprises the following steps:
s1, preparing an inner layer 11: stirring and reacting PVC resin DH-3000, PVC stabilizer IV, EBS, hydrolysis-resistant polyether TPU, CPE and titanium dioxide for 20min at 190 ℃, adding plasticizer IV, stirring and reacting for 50min, and extruding and molding the mixture together with a heating wire 2 by an extruding device to form an inner layer 11;
s2, preparing a middle layer 12: stirring and reacting PVC resin II, PVC stabilizer II and EBS at 190 ℃ for 20min, adding plasticizer II, stirring and reacting for 50min to obtain mixture A, and uniformly extruding the mixture A into a layer on the outer side of the inner layer 11 in the circumferential direction to obtain a middle layer 12;
s3, preparing a network cable layer 13: winding the net wire on the outer side of the middle layer 12 in the circumferential direction to obtain a net wire layer 13;
s4, preparing an outer layer 14: stirring and reacting PVC resin III, PVC stabilizer III, EBS and blue powder for 20min at 190 ℃, adding plasticizer III, stirring and reacting for 50min to obtain a mixture B, and uniformly extruding the mixture B into a layer on the outer side of the middle layer 12 in the circumferential direction to obtain an outer layer 14;
s5, preparing the pipe body 1: and (3) stirring and reacting the PVC resin I, the PVC stabilizer I, the calcium powder, the foaming agent, the EBS and the black powder for 20min at 190 ℃, then adding the plasticizer I, stirring and reacting for 50min to prepare a mixture C, and uniformly extruding the mixture C into a layer on the outer side of the outer layer 14 in the circumferential direction to prepare the heat-insulating layer 15, thus obtaining the pipe body 1.
Example 3
The difference from example 1 is that the contents and parameters of each component of the inner layer 11, the middle layer 12, the outer layer 14 and the heat-insulating layer 15 and the process parameters in the preparation method are different, and the contents of each component are shown in the following tables 1 to 4.
The minimum insulation thickness of the inner layer 11 is 1.4mm, the minimum insulation thickness of the middle layer 12 is 1.2mm, and the thickness of the outer layer 14 is 1.0mm.
The preparation method of the PVC pipe internally provided with the heating device and the heat insulation layer comprises the following steps:
s1, preparing an inner layer 11: stirring and reacting PVC resin DH-3000, PVC stabilizer IV, EBS, hydrolysis-resistant polyether TPU, CPE and titanium dioxide at 180 ℃ for 25min, adding plasticizer IV, stirring and reacting for 55min, and extruding and molding the mixture together with the heating wire 2 by an extruding device to form an inner layer 11;
s2, preparing a middle layer 12: stirring and reacting PVC resin II, PVC stabilizer II and EBS at 180 ℃ for 25min, adding plasticizer II, stirring and reacting for 55min to obtain mixture A, and uniformly extruding the mixture A into a layer on the outer side of the inner layer 11 in the circumferential direction to obtain a middle layer 12;
s3, preparing the network cable layer 13: winding the net wire on the outer side of the middle layer 12 in the circumferential direction to obtain a net wire layer 13;
s4, preparing an outer layer 14: stirring and reacting PVC resin III, PVC stabilizer III, EBS and blue powder for 25min at 180 ℃, adding plasticizer III, stirring and reacting for 55min to obtain a mixture B, and uniformly extruding the mixture B into a layer in the circumferential direction on the outer side of the middle layer 12 to obtain an outer layer 14;
s5, preparing the pipe body 1: stirring and reacting PVC resin I, PVC stabilizer I, calcium powder, foaming agent, EBS and black powder at 180 ℃ for 25min, adding plasticizer I, stirring and reacting for 55min to obtain mixture C, and uniformly extruding the mixture C to form a layer on the outer side of the outer layer 14 in the circumferential direction to obtain the heat-insulating layer 15, thus obtaining the pipe body 1.
Comparative example
Comparative example 1
The difference from example 1 is that a PVC pipe comprising only the inner layer 11, the middle layer 12 and the outer layer 14 was used as a blank control.
TABLE 1 insulating layer component content table (unit: g)
Example 1 Example 2 Example 3
PVC resin one 1000 1100 1050
Plasticizer one 500 600 550
PVC stabilizer 1 10 20 20
Calcium powder 80 120 100
Foaming agent 60 80 70
EBS 2 3 2
Toner one 5 10 7
TABLE 2 outer layer component content table (unit: g)
Example 1 Example 2 Example 3
PVC resin III 1000 1100 1050
Plasticizer III 500 600 550
PVC stabilizer III 10 20 20
EBS 1 2 1
Toner two 2 5 3
TABLE 3 content of layer component (unit: g)
Example 1 Example 2 Example 3
PVC resin II 1000 1100 1050
Plasticizer II 500 600 550
PVC stabilizer II 10 20 20
EBS 1 2 1
TABLE 4 content of inner layer component (unit: g)
Example 1 Example 2 Example 3
PVC resin DH-3000 1000 1100 1050
Plasticizer IV 500 700 600
PVC stabilizer IV 10 20 20
EBS 1 2 1
Hydrolysis-resistant polyether TPU 200 250 230
CPE 200 250 230
Titanium white powder 20 30 30
Performance test
Testing frost crack resistance; the pipe bodies 1 prepared in examples 1 to 3 and comparative example 1 were filled with water, the plug 3 was plugged into a power supply, the temperature sensing probe 41 on the temperature controller 4 was abutted against the outer wall of the insulating layer 15 on the corresponding pipe body 1, the pipe body 1 was placed at-20 ℃ for 12 hours, and then the water inside the pipe body 1 was observed and recorded, and the test results are shown in table 5 below.
TABLE 5 test result table of each example and comparative example
Figure BDA0003703772610000111
To sum up, it can be seen that the pipe body 1 that this application was made has better frostproofing effect, and reducible pipe body 1 takes place the condition of splitting because of the frozen volume expansion of water under the low temperature condition, and the suitability is better.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The utility model provides a PVC pipe of built-in heating device and heat preservation, includes pipe body (1), pipe body (1) is from inside to outside including inlayer (11), middle level (12) and skin (14), its characterized in that: the insulation layer (15) is coated on the outer side of the outer layer (14), and the insulation layer (15) comprises the following raw materials in parts by weight: 100-110 parts of PVC resin I, 50-60 parts of plasticizer I, 1-2 parts of PVC stabilizer I, 8-12 parts of calcium powder, 6-8 parts of foaming agent, 0.2-0.3 part of EBS and 0.5-1 part of toner I;
inner strata (11) with circumference is provided with a plurality of heater strips (2) between middle level (12), be equipped with plug (3) and temperature controller (4) on pipe body (1), the output of plug (3) with the input of temperature controller (4) is connected, the output of temperature controller (4) with the input of heater strip (2) is connected, be equipped with temperature sensing probe (41) on temperature controller (4), temperature sensing probe (41) are used for the butt heat preservation (15).
2. The PVC pipe with the built-in heating device and the heat insulation layer as claimed in claim 1, wherein: the inner layer (11) comprises the following raw materials in parts by weight: 100-110 parts of PVC resin DH-3000, 50-70 parts of plasticizer IV, 1-2 parts of PVC stabilizer IV, 0.1-0.2 part of EBS, 20-25 parts of hydrolysis-resistant polyether TPU and 20-25 parts of CPE;2-3 parts of titanium dioxide.
3. PVC pipe with built-in heating device and insulation (15) according to claim 1, characterized in that: the middle layer (12) comprises the following raw materials in parts by weight: 100-110 parts of PVC resin II, 50-60 parts of plasticizer II, 1-2 parts of PVC stabilizer II and 0.1-0.2 part of EBS.
4. The PVC pipe with the built-in heating device and the heat insulation layer as claimed in claim 1, wherein: the outer layer (14) comprises the following raw materials in parts by weight: 100-110 parts of PVC resin III, 50-60 parts of plasticizer III, 1-2 parts of PVC stabilizer III, 0.1-0.2 part of EBS and 0.2-0.5 part of toner II.
5. The PVC pipe with the built-in heating device and the heat insulation layer as claimed in claim 1, wherein: the lowest insulation thickness of the inner layer (11) is 1.1-1.5mm, the lowest insulation thickness of the middle layer (12) is 1.0-1.4mm, and the thickness of the outer layer (14) is 1.0-1.2mm.
6. The PVC pipe with the built-in heating device and the heat insulation layer as claimed in claim 1, wherein: and a net wire layer (13) is arranged between the middle layer (12) and the outer layer (14).
7. The PVC pipe with the built-in heating device and the heat insulation layer as claimed in claim 1, wherein: the temperature controller (4) is connected with a connecting sleeve (5) in a sliding manner, the connecting sleeve (5) slides to be close to or far away from the temperature sensing probe (41), a containing groove (51) is formed in the connecting sleeve (5), the temperature controller (4) is located in the containing groove (51), a shaping rod (7) is connected in the connecting sleeve (5) in a sliding manner, and an elastic strip (8) is arranged on the shaping rod (7);
a positioning rod (9) is arranged on the elastic strip (8), an elastic piece (16) is arranged in the connecting sleeve (5), the elastic piece (16) tensions the shaping rod (7) so that the positioning rod (9) is tightly propped against the outer side wall of the connecting sleeve (5), an extending strip (17) is arranged on the connecting sleeve (5), the extending strip (17) and the positioning rod (9) are respectively positioned at two opposite sides of a notch of the accommodating groove (51), and a notch (171) for the elastic strip (8) to penetrate through is formed in the extending strip (17);
seted up a plurality of perforation (101) on elasticity strip (8), it is a plurality of perforation (101) are followed the length direction of elasticity strip (8) is interval distribution, be equipped with fixture block (10) on adapter sleeve (5), perforation (101) supply fixture block (10) card is gone into.
8. The PVC pipe with the built-in heating device and the heat insulation layer as claimed in claim 7, wherein: work as elasticity strip (8) wear to establish when breach (171), elasticity strip (8) are close to be equipped with a plurality of lugs (81) that are interval distribution on the lateral wall of holding tank (51) tank bottom, temperature sensing probe (41) stretches out holding tank (51) notch, still be equipped with a plurality of incisions (82) on elasticity strip (8), it is a plurality of incision (82) are on a parallel with the length direction of elasticity strip (8).
9. A preparation method of a PVC pipe with a built-in heating device and a heat-insulating layer is characterized by comprising the following steps:
s1, preparing an inner layer (11): stirring and reacting PVC resin DH-3000, PVC stabilizer IV, EBS, hydrolysis-resistant polyether TPU, CPE and titanium dioxide for 20-30min at 160-190 ℃, adding plasticizer IV, stirring and reacting for 50-60min, and extruding and molding the mixture together with a heating wire (2) through an extruding device to form an inner layer (11);
s2, preparing the middle layer (12): stirring and reacting the PVC resin II, the PVC stabilizer II and the EBS at 160-190 ℃ for 20-30min, then adding the plasticizer II, stirring and reacting for 50-60min to obtain a mixture A, and uniformly extruding the mixture A into a layer on the outer side of the inner layer (11) in the circumferential direction to obtain a middle layer (12);
s3, preparing a network cable layer (13): winding the net thread on the outer side of the middle layer (12) in the circumferential direction to obtain a net thread layer (13);
s4, preparing an outer layer (14): stirring and reacting PVC resin III, PVC stabilizer III, EBS and blue powder for 20-30min at 160-190 ℃, adding plasticizer III, stirring and reacting for 50-60min to obtain a mixture B, and uniformly extruding the mixture B into a layer on the outer side of the middle layer (12) in the circumferential direction to obtain an outer layer (14);
s5, preparing the pipe body (1): and (2) stirring and reacting the PVC resin I, the PVC stabilizer I, the calcium powder, the foaming agent, the EBS and the black powder at 160-190 ℃ for 20-30min, adding the plasticizer I, stirring and reacting for 50-60min to obtain a mixture C, and circumferentially and uniformly extruding the mixture C to form a layer on the outer side of the outer layer (14) to obtain the heat-insulating layer (15), thus obtaining the pipe body (1).
10. The method for preparing the PVC pipe with the built-in heating device and the heat insulation layer according to claim 9, is characterized in that: extrusion device includes extruder (181), locates extrusion die head (182) on extruder (181) and rotate connect in reel (183) on extruder (181), discharging channel (19) have been seted up on extrusion die head (182), set up on the lateral wall of extrusion die head (182) with entrance hole (20) of discharging channel (19) intercommunication, entrance hole (20) are used for heater strip (2) wear to establish, just heater strip (2) are towards keeping away from the direction of extruder (181) is inwards inclined to be set up, reel (183) are used for heater strip (2) are convoluteed.
CN202210699023.0A 2022-06-20 2022-06-20 PVC pipe with built-in heating device and heat insulation layer and preparation method thereof Pending CN115139606A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116690931A (en) * 2023-06-09 2023-09-05 东莞市裕天硅橡胶科技有限公司 Preparation process and product of silica gel heating pipe for pneumoperitoneum machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6834993B1 (en) * 2003-08-19 2004-12-28 Cooper Instrument Corporation Strap-on pipe probe
CN206796600U (en) * 2017-04-23 2017-12-26 河南若德橡胶科技有限公司 The Integral producing apparatus of braided steel wire rubber tube
CN207880309U (en) * 2018-02-08 2018-09-18 江苏百通塑业发展有限公司 Household antifreezing water pipe
CN109575473A (en) * 2018-11-29 2019-04-05 安徽可尔海思塑业有限公司 The widely used heat preservation PVC board of one kind and its production method
CN112679887A (en) * 2021-01-20 2021-04-20 浙江新洁新材料科技有限公司 Bending-resistant silver tube and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6834993B1 (en) * 2003-08-19 2004-12-28 Cooper Instrument Corporation Strap-on pipe probe
CN206796600U (en) * 2017-04-23 2017-12-26 河南若德橡胶科技有限公司 The Integral producing apparatus of braided steel wire rubber tube
CN207880309U (en) * 2018-02-08 2018-09-18 江苏百通塑业发展有限公司 Household antifreezing water pipe
CN109575473A (en) * 2018-11-29 2019-04-05 安徽可尔海思塑业有限公司 The widely used heat preservation PVC board of one kind and its production method
CN112679887A (en) * 2021-01-20 2021-04-20 浙江新洁新材料科技有限公司 Bending-resistant silver tube and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨鸣波，黄锐主编: "《炉外常用容器的保温研究》", vol. 1, 中国轻工业出版社, pages: 301 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116690931A (en) * 2023-06-09 2023-09-05 东莞市裕天硅橡胶科技有限公司 Preparation process and product of silica gel heating pipe for pneumoperitoneum machine

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