CN109337351A - A kind of pump valve pipeline and preparation method thereof with heat insulation function - Google Patents

A kind of pump valve pipeline and preparation method thereof with heat insulation function Download PDF

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Publication number
CN109337351A
CN109337351A CN201811134976.2A CN201811134976A CN109337351A CN 109337351 A CN109337351 A CN 109337351A CN 201811134976 A CN201811134976 A CN 201811134976A CN 109337351 A CN109337351 A CN 109337351A
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CN
China
Prior art keywords
clamping ring
tube
inner tube
heat insulation
pipeline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811134976.2A
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Chinese (zh)
Inventor
朱兆林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Huanke Pump Valve Co Ltd
Original Assignee
Anhui Huanke Pump Valve Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Huanke Pump Valve Co Ltd filed Critical Anhui Huanke Pump Valve Co Ltd
Priority to CN201811134976.2A priority Critical patent/CN109337351A/en
Publication of CN109337351A publication Critical patent/CN109337351A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • 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
    • 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
    • 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
    • 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
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/24—Layered products comprising a layer of synthetic resin characterised by the use of special additives using solvents or swelling agents
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B5/18—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 features of a layer of foamed material
    • B32B5/20—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 features of a layer of foamed material foamed in situ
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
    • C08G18/4213—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols from terephthalic acid and dialcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/734—Dimensional stability
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C08J2375/06—Polyurethanes from polyesters
    • 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
    • C08J2427/00—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
    • C08J2427/02—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
    • C08J2427/12—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 fluorine atoms
    • C08J2427/16—Homopolymers or copolymers of vinylidene fluoride
    • 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
    • C08J2433/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2433/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2433/06—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2433/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C08J2475/08—Polyurethanes from polyethers

Abstract

The invention discloses a kind of pump valve pipeline with heat insulation function, including pipeline body, the pipeline body includes the inner tube being arranged from the inside to the outside, insulating tube and outer tube, the both ends of the pipeline body have been connected by screw to flange connection, the flange connection includes ring flange, the middle side edge of the ring flange is equipped with interior clamping ring and outer clamping ring, the outer clamping ring is plugged in the gap between outer tube and inner tube, and the inner tube is plugged in the inserting groove between interior clamping ring and outer clamping ring.Inventive pipeline ontology includes the inner tube being arranged from the inside to the outside, insulating tube and outer tube, and wherein the packed density of insulating tube is greater than the polyurethane insulation coating density of design, and density is larger after foaming curing, and compressive strength is good, meets the bearing capacity to pipeline body；The preferable dimensional stability of insulating tube also has preferable flexibility, and heat insulation effect is good, and high temperature resistance is good, long service life.

Description

A kind of pump valve pipeline and preparation method thereof with heat insulation function
Technical field
The invention belongs to pump valve pipe technology fields, and in particular to a kind of pump valve pipeline and its preparation with heat insulation function Method.
Background technique
Pump valve pipeline is widely used in the production such as chemical industry, food and drug, with to production efficiency and quality Requirement it is higher and higher, pump valve pipeline in addition to being attached to the new functions such as heat preservation, degerming, cooling in existing translocation, But existing pump valve pipeline is generally fabricated using single metal or plastics, heat insulation effect is poor.Plastic conduit Manufacturing cost it is lower, but its physical property is poor, is often easy to happen cracking, needs to check in time and replacement.
For this purpose, it is proposed that a kind of pump valve pipeline and preparation method thereof with heat insulation function, to solve above-mentioned background skill The problem of being mentioned in art.
Summary of the invention
The purpose of the present invention is to provide a kind of pump valve pipeline and preparation method thereof with heat insulation function, it is above-mentioned to solve The problem of being proposed in background technique.
To achieve the above object, the invention provides the following technical scheme: a kind of pump valve pipeline with heat insulation function, including Pipeline body, the pipeline body include the inner tube being arranged from the inside to the outside, insulating tube and outer tube, and the two of the pipeline body End has been connected by screw to flange connection, and the flange connection includes ring flange, in the side of the ring flange Portion is equipped with interior clamping ring and outer clamping ring, and the outer clamping ring is plugged in the gap between outer tube and inner tube, described interior Layer pipe is plugged in the inserting groove between interior clamping ring and outer clamping ring.
Preferably, the ring flange is integrally formed with interior clamping ring and outer clamping ring, the interior clamping ring and outer connection Axle center is enclosed on same straight line, and interior clamping ring is located inside outer clamping ring.
Preferably, the screw sequentially passes through outer tube, outer clamping ring, inner tube and is finally bolted in interior clamping ring, and Screw is placed equidistant with the circle in outer tube.
Preferably, mass fraction shared by the constituent of the insulating tube and each ingredient is respectively as follows: PET resin 58~70 Part, 15~25 parts of polyvinylidene fluoride, 13~22 parts of polymethyl methacrylate, 16-23 parts of combined polyether glycol, foam stabilizer 2~3 parts, 1~3 part of foaming agent and 100~130 parts of polyisocyanates.
The preparation method of the present invention also provides a kind of pump valve pipeline with heat insulation function, specifically includes the following steps:
S1, by load weighted PET resin, polyvinylidene fluoride, polymethyl methacrylate, combined polyether glycol, foam stabilizer, In foaming agent and polyisocyanates investment mixing kettle, 30~60min of stirring to acquisition mixture A after mixing；
S2, mixture A is heated to 25~28 DEG C, is filled between outer tube and inner tube after mixing through high pressure foaming machine Gap in, so that mixture A is carried out the foaming of free pressure in closed space, formation insulating tube, thus completed pipe Road ontology；
S3, outer clamping ring is plugged in the gap between outer tube and inner tube, while inner tube is made to be plugged in interior connection In inserting groove between circle and outer clamping ring, then screw sequentially passes through outer tube, outer clamping ring, inner tube and is finally bolted in Interior clamping ring, the combination for completing pipeline body and flange connection are installed.
Compared with prior art, the beneficial effects of the present invention are: a kind of pump valve with heat insulation function provided by the invention Pipeline and preparation method thereof, inventive pipeline ontology includes the inner tube being arranged from the inside to the outside, insulating tube and outer tube, wherein protecting Mass fraction shared by the constituent of warm pipe and each ingredient is respectively as follows: PET resin, polyvinylidene fluoride, polymethylacrylic acid Methyl esters, combined polyether glycol, foam stabilizer, foaming agent and polyisocyanates, the packed density of insulating tube are greater than the poly- ammonia of design Ester insulating layer density, density is larger after foaming curing, and compressive strength is good, meets the bearing capacity to pipeline body；
The preferable dimensional stability of insulating tube also has preferable flexibility, and heat insulation effect is good, and high temperature resistance is good, uses the longevity Life length；
Outer clamping ring is plugged in the gap between outer tube and inner tube, at the same make inner tube be plugged in interior clamping ring and In inserting groove between outer clamping ring, then screw sequentially passes through outer tube, outer clamping ring, inner tube and is finally bolted in interior company Adapter ring, in this way, the combination installation of pipeline body and flange connection is simple.
Detailed description of the invention
Fig. 1 is that pipeline body of the invention connects schematic cross-sectional view with flange connection；
Fig. 2 is pipeline body schematic diagram of internal structure of the invention；
Fig. 3 is flange connection structural schematic diagram of the invention.
In figure: 1 outer tube, 2 insulating tubes, 3 inner tubes, 4 pipeline bodies, 5 ring flanges, 6 outer clamping rings, clamping ring, 8 in 7 Screw, 9 flange connections, 10 inserting grooves.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
The present invention provides a kind of pump valve pipeline with heat insulation function of such as Fig. 1-3, including pipeline body 4, the pipeline sheets Body 4 includes inner tube 3, insulating tube 2 and the outer tube 1 being arranged from the inside to the outside, and the both ends of the pipeline body 4 are connected by screw 8 It is connected to flange connection 9, the flange connection 9 includes ring flange 5, and the middle side edge of the ring flange 5 is equipped with interior Clamping ring 7 and outer clamping ring 6, the outer clamping ring 6 are plugged in the gap between outer tube 1 and inner tube 3, the inner tube 3 are plugged in the inserting groove 10 between interior clamping ring 7 and outer clamping ring 6.
Specifically, the ring flange 5 is integrally formed with interior clamping ring 7 and outer clamping ring 6, the interior clamping ring 7 with it is outer 6 axle center of clamping ring is on same straight line, and interior clamping ring 7 is located inside outer clamping ring 6.
Specifically, the screw 8 sequentially passes through outer tube 1, outer clamping ring 6, inner tube 3 and is finally bolted in interior clamping ring 7, and screw 8 is placed equidistant with the circle in outer tube 1.
Specifically, mass fraction shared by the constituent of the insulating tube 2 and each ingredient be respectively as follows: 58 parts of PET resin, 25 parts of polyvinylidene fluoride, 22 parts of polymethyl methacrylate, 16 parts of combined polyether glycol, 3 parts of foam stabilizer, 2 parts of foaming agent With 100 parts of polyisocyanates.
The preparation method of the present invention also provides a kind of pump valve pipeline with heat insulation function, specifically includes the following steps:
S1, by load weighted PET resin, polyvinylidene fluoride, polymethyl methacrylate, combined polyether glycol, foam stabilizer, In foaming agent and polyisocyanates investment mixing kettle, stirring 50min to acquisition mixture A after mixing；
S2, mixture A is heated to 28 DEG C, is filled between outer tube 1 and inner tube 3 after mixing through high pressure foaming machine In gap, so that mixture A is carried out free pressure foaming in closed space, form insulating tube 2, thus completed pipeline Ontology 4；
S3, outer clamping ring 6 is plugged in the gap between outer tube 1 and inner tube 3, while it is interior that inner tube 3 is plugged in In inserting groove 10 between clamping ring 7 and outer clamping ring 6, then screw 8 sequentially passes through outer tube 1, outer clamping ring 6, inner tube 3 And it is finally bolted in interior clamping ring 7, the combination for completing pipeline body 4 and flange connection 9 is installed.
In conclusion compared with prior art, inventive pipeline ontology 4 includes the inner tube 3 being arranged from the inside to the outside, heat preservation Pipe 2 and outer tube 1, wherein mass fraction shared by the constituent of insulating tube 2 and each ingredient is respectively as follows: PET resin, gathers inclined two Vinyl fluoride, polymethyl methacrylate, combined polyether glycol, foam stabilizer, foaming agent and polyisocyanates, insulating tube 2 are filled out The polyurethane insulation coating density that density is greater than design is filled, density is larger after foaming curing, and compressive strength is good, meets to pipeline body 4 bearing capacity；
The preferable dimensional stability of insulating tube 2 also has preferable flexibility, and heat insulation effect is good, and high temperature resistance is good, uses the longevity Life length；
Outer clamping ring 6 is plugged in the gap between outer tube 1 and inner tube 3, while inner tube 3 being made to be plugged in interior connection In inserting groove 10 between circle 7 and outer clamping ring 6, then screw 8 sequentially passes through outer tube 1, outer clamping ring 6, inner tube 3 and most It is bolted in interior clamping ring 7 eventually, in this way, the combination installation of pipeline body 4 and flange connection 9 is simple.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (5)

1. a kind of pump valve pipeline with heat insulation function, including pipeline body (4), it is characterised in that: pipeline body (4) packet The inner tube (3) being arranged from the inside to the outside, insulating tube (2) and outer tube (1) are included, the both ends of the pipeline body (4) pass through screw (8) it is connected with flange connection (9), the flange connection (9) includes ring flange (5), the side of the ring flange (5) Interior clamping ring (7) and outer clamping ring (6) are equipped in the middle part of side, the outer clamping ring (6) is plugged in outer tube (1) and inner tube (3) Between gap in, the inner tube (3) is plugged in the inserting groove (10) between interior clamping ring (7) and outer clamping ring (6).
2. a kind of pump valve pipeline with heat insulation function according to claim 1, it is characterised in that: the ring flange (5) It is integrally formed with interior clamping ring (7) and outer clamping ring (6), the interior clamping ring (7) and outer clamping ring (6) axle center are in same On straight line, and interior clamping ring (7) is located at outer clamping ring (6) inside.
3. a kind of pump valve pipeline with heat insulation function according to claim 1, it is characterised in that: the screw (8) according to It is secondary to run through outer tube (1), outer clamping ring (6), inner tube (3) and be finally bolted in interior clamping ring (7), and screw (8) is equidistantly set It is placed in a circle of outer tube (1).
4. a kind of pump valve pipeline with heat insulation function according to claim 1, it is characterised in that: the insulating tube (2) Constituent and each ingredient shared by mass fraction be respectively as follows: 58~70 parts of PET resin, 15~25 parts of polyvinylidene fluoride, 13~22 parts of polymethyl methacrylate, 16-23 parts of combined polyether glycol, 2~3 parts of foam stabilizer, 1~3 part of foaming agent and more 100~130 parts of isocyanates.
5. a kind of preparation method of the pump valve pipeline described in claim 1 with heat insulation function, it is characterised in that: specifically include Following steps:
S1, by load weighted PET resin, polyvinylidene fluoride, polymethyl methacrylate, combined polyether glycol, foam stabilizer, In foaming agent and polyisocyanates investment mixing kettle, 30~60min of stirring to acquisition mixture A after mixing；
S2, mixture A is heated to 25~28 DEG C, is filled into outer tube (1) and inner tube after mixing through high pressure foaming machine (3) in the gap between, so that mixture A is carried out free pressure foaming in closed space, formed insulating tube (2), thus made Complete pipeline body (4)；
S3, outer clamping ring (6) is plugged in the gap between outer tube (1) and inner tube (3), while makes inner tube (3) It is plugged in the inserting groove (10) between interior clamping ring (7) and outer clamping ring (6), then screw (8) sequentially passes through outer tube (1), it outer clamping ring (6), inner tube (3) and is finally bolted in interior clamping ring (7), completes pipeline body (4) and flanged joint knot The combination of structure (9) is installed.
CN201811134976.2A 2018-09-28 2018-09-28 A kind of pump valve pipeline and preparation method thereof with heat insulation function Pending CN109337351A (en)

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Application publication date: 20190215