CN203305502U - Electromagnetic heating extruder of PVC (Polyvinyl Chloride) pipes - Google Patents

Abstract

The utility model relates to an electromagnetic heating extruder of PVC (Polyvinyl Chloride) pipes. The electromagnetic heating extruder is mainly characterized in that an electromagnetic heating device is arranged on a metal charging barrel of the extruder, the electromagnetic heating device is composed of an electromagnetic heater and an electromagnetic heating layer, the electromagnetic heating layer comprises a heat insulation layer, a polyester insulating composite membrane and an electromagnetic coil which are sequentially wrapped on the outer circumference of the metal charging barrel, the electromagnetic coil is wound on the polyester insulating composite membrane, a protection layer is arranged outside the electromagnetic coil, and the electromagnetic coil is connected with an input wire of the electromagnetic heater installed in an electric control box through a conducting wire. Since the extruder is electromagnetically heated, the heating speed is high; compared with the traditional resistor disc heating manner, the electromagnetic heating manner has the advantages that the preheating time is shortened by 2/3, the thermal efficiency is as high as 95%; meanwhile, the rise of ambient temperature is avoided, the energy-saving effect is very significant and is up to 60%, and the environmental conditions in the production site are greatly improved. The electromagnetic heating extruder has the advantages of long service life, high heating speed, little maintenance amount and the like.

Description

Pvc pipe material Electromagnetic Heating extruder

Technical field

The utility model belongs to the tube extruding equipment technical field, specifically a kind of Electromagnetic Heating extruder that is applicable to the pvc pipe material.

Background technology

In PVC plastic pipe production process, for guaranteeing tubing, normally in extruder, extrude, traditional heating mode is with electric heating piece or resistance wire heating circle, by the contact conduction pattern, heat to be passed on barrel on the metal barrel of extruder, the defect that this mode of heating exists is: the one, and preheating time is long, just can make for a long time barrel reach the requirement temperature, and the heat that only abuts against the barrel inner side surface passes on barrel, the heat major part in electric heating piece or the heating circle outside is dissipated in air, because heat loss is serious, cause operating ambient temperature to rise, cause workshop high temperature sultry, the 2nd, the very high very easily oxidation of self-temperature when electric heating piece or Resistant heating, so the life-span is shorter, the 3rd, regeneration time is too slow, and preheating and heat insulation effect are poor, installs, changes complex procedures, and production efficiency is low, and production cost is high, and power consumption is large, the 4th, Resistant heating, the excessive rear meeting of injury to resistance wire itself of power increases greatly, resistance wire metal itself at high temperature can volatilize fast, aging and lost efficacy rapidly, so resistance wire needs irregular replacing, increased production cost and reduced production efficiency, the shortcoming of Resistant heating maximum is exactly that power density is low in addition, and the occasion higher in some temperature just can't adapt to.

The utility model content

The purpose of this utility model be to provide a kind of can energy saving, increase substantially the efficiency of heating surface and production efficiency, reduce production costs, and reliable pvc pipe material Electromagnetic Heating extruder.

Realize that the technical scheme that the purpose of this utility model is taked is: this machine comprises drive motors, shaft coupling, reductor, distributor box, rear bearing block, the metal barrel, front-end bearing pedestal and frame, wherein, on the metal barrel, be provided with electromagnetic heater, this device is comprised of electromagnetic heater and Electromagnetic Heating layer two parts, the Electromagnetic Heating layer is included in the insulating wrapped up successively on metal barrel excircle, polyester insulated composite membrane and be wrapped in the solenoid on polyester insulated composite membrane, and be provided with overcoat in the outside of solenoid, solenoid is connected with the input line of electromagnetic heater in being arranged on electric cabinet by wire.

Described insulating is comprised of fibre glass chopped stand mat and heat-preservation cotton.

What described overcoat adopted is high temperature gummed tape.

Pvc pipe material Electromagnetic Heating extruder according to the such scheme making, pass through Electromagnetic Heating, can make metal barrel self-heating, and the barrel outside is wrapped in again heat-insulating heat-preserving material, having greatly reduced heat conduction loss and heat scatters and disappears in air, improved the thermal efficiency, avoided the rising of environment temperature, power savings is very remarkable, can reach 60%, compare the heating of traditional resistor disc and shorten 2/3 preheating time, the thermal efficiency is up to 95%, heating part adopts solenoid, avoided the resistance-type heating to need often to safeguard and regularly replace the defect of heating collar, later stage is substantially without maintenance cost.Because solenoid itself does not generate heat, adopt insulating materials, the problem of reduction of service life so there is not oxidation under the condition of high temperature.And use Electromagnetic Heating to reduce to be radiated airborne heat, to avoid workshop to occur that high temperature is sultry, greatly improved thus the environmental condition of production scene.Compared with prior art, these facility have the advantages such as long service life, heating rate soon, seldom need repairing.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the cross sectional view of metal barrel in Fig. 1.

The specific embodiment

Referring to Fig. 1, Fig. 2, pvc pipe material Electromagnetic Heating extruder of the present utility model, comprise drive motors 1, shaft coupling 2, reductor 3, distributor box 4, rear bearing block 5, metal barrel 6, front-end bearing pedestal 7 and frame 8, wherein, on metal barrel 6, be provided with electromagnetic heater, this device is comprised of electromagnetic heater and Electromagnetic Heating layer two parts, the Electromagnetic Heating layer is included in insulating 9 and the polyester insulated composite membrane 10 wrapped up successively on metal barrel 6 excircles, be wrapped in solenoid 11 and the outside overcoat 12 be wound around of coil on polyester insulated composite membrane 10, solenoid 11 is connected with the input line of electromagnetic heater in being arranged on electric cabinet by wire.Described insulating 9 is comprised of fibre glass chopped stand mat and heat-preservation cotton; What described overcoat 12 adopted is high temperature gummed tape.

Operation principle: Electromagnetic Heating is to make metal barrel self-heating by electromagnetic induction principle, extruder be subjected to temperature controlled power supply through electromagnetic heater by industrial frequency AC electric rectification, filtering, be reverse into the high-frequency high-voltage of 20-50KHZ, by connecting line, receive on solenoid, high-frequency alternating current sees through insulation material and acts on barrel, makes metal barrel heating itself.The operation principle of high frequency heating system is high-frequency induction, and it is different from contact conduction principle of heating, so it does not need to contact with the direct of sensed metal, therefore do not exist, conducts bad problem.In addition, also can be directly inputted to electromagnetic heater to power supply, original temperature controller directly is used for controlling electromagnetic heater.Electromagnetic heater is to utilize electromagnetic induction principle to convert electrical energy into the device of heat energy, this device can directly be purchased on market, by electromagnetic heater by 220V, the AC rectification of 50/60Hz becomes direct current, again direct current is converted to the high-frequency high-voltage that frequency is 20-50KHz, the high-frequency high-voltage current changed at a high speed flows through coil can produce the alternating magnetic field changed at a high speed, when the magnetic line of force in magnetic field, can in metallic object, produce countless little eddy current during by the magnetic conductive metal material, make metal material heating at a high speed voluntarily itself, thereby reach the usefulness of material in the heating of metal barrel.Electromagnetic Heating can accomplish without cooling device, and this not only saves the energy, and equipment is oversimplified.Equipped with glass tapetum fibrosum and heat-preservation cotton, have thermal insulation function between metal barrel and solenoid, can reduce heat loss, effectively improves heat utilization ratio.Produced high temperature and the electromagnetic heater self-temperature is very low by the metal barrel of electromagnetic induction is inner, self electrical loss is insignificant, even, so when power is larger, also do not affect the service life of heater, can also regulate at any time easily use power as required.This machine can be worked for a long time in rugged environment.Because electromagnetic heater itself is worked at low temperatures, so it can be heating carbonizations such as the greasy dirt that is adsorbed on self surface, plastic grains, therefore can not produce the faults such as electric leakage, short circuit.

Claims (3)

1. pvc pipe material Electromagnetic Heating extruder, it is characterized in that: this machine comprises drive motors, shaft coupling, reductor, distributor box, rear bearing block, the metal barrel, front-end bearing pedestal and frame, wherein, on the metal barrel, be provided with electromagnetic heater, this device is comprised of electromagnetic heater and Electromagnetic Heating layer two parts, the Electromagnetic Heating layer is included in the insulating wrapped up successively on metal barrel excircle, polyester insulated composite membrane and be wrapped in the solenoid on polyester insulated composite membrane, and be provided with overcoat in the outside of solenoid, solenoid is connected with the input line of electromagnetic heater in being arranged on electric cabinet by wire.

2. pvc pipe material Electromagnetic Heating extruder according to claim 1, it is characterized in that: described insulating is comprised of fibre glass chopped stand mat and heat-preservation cotton.

3. pvc pipe material Electromagnetic Heating extruder according to claim 1 is characterized in that: what described overcoat adopted is high temperature gummed tape.

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