CN2171477Y - Heating pipe special for paper box corrugated machine - Google Patents

Abstract

The utility model relates to a heating pipe special for a paper box corrugated machine, which is composed of a heating body, a leading wire end and a support end, wherein, six helical electric heating wires 3 are encapsulated by ceramic cladding materials 12 on the inner walls of a metal casing 1 to form the hollow heating body, and the leading wire end and the support end are composed of metal end tubes 4 and ceramic insulators 6. The leading wire end is provided with six wire connection screw rods, and both ends of each wire connection screw rod are respectively connected with electric heating wires of a power source; the support end is provided with a neutral wire connection point of electric heating wires. The utility model has the advantages of firm structure, good insulation, long lifetime and low price; the utility model can be used not only for an essential-phase power source, but also for automatic temperature control.

Description

Heating pipe special for paper box corrugated machine

The utility model belongs to electric calorifie installation; Particularly belong to electrothermal tube special-purpose on the carton Corrugating Machine.

Ripple corrugation on the Packaging Box is to utilize the corrugation processing machine, by electrothermal tube paper wood is heated, and makes its distortion moulding.Existing Corrugating Machine electrothermal tube is to have to encompass the spirality heating wire that diameter is slightly less than the metal tube endoporus in the inside of metal body, with the small porcelain tube suit and be looped around in the metal tube, uses a little cement sealing again, forms a hollow electrothermal tube.This structure can only make the 220V of two ends outlet or the electrothermal tube of 190V, can not use three phase mains, also can't automatic temperature-control, and its performance and service life are also all undesirable.

The purpose of this utility model is the deficiency at existing electrothermal tube, and a kind of sound construction is provided, and insulate, and the life-span is long, and price is low, both can be used for three phase mains, again electrothermal tube that can be temperature automatically controlled.

The utility model is realized by following measure: with ceramic material the helically wound heating wire sintering of six supporting rings is packaged in the inwall of metal tube, constitutes the metal electric heating pipe of a hollow.Six heating wire wherein, an end is connected into three groups by Y shape; The other end is then formed neutral point, becomes the circuit of a three phase mains with this grade.Simultaneously, electrothermal tube and temperature-sensitive case are formed the circuit of an automatic temperature control system.

Figure 1A, 1B, be assembly drawing and the A-A side view faced of the present utility model respectively.

Fig. 2 A, 2B are respectively the B-B among Fig. 1, the C-C side view.

Fig. 3 A, 3B are respectively that E.F among Fig. 1 is to side view.

Fig. 4 is a control system circuit diagram of the present utility model.

Below according to Fig. 1 to shown in Figure 4, describe specific embodiments of the present utility model in detail.

Shown in the figure, be an embodiment of the present utility model, it is made up of heater, lead end and three parts of supported end.Wherein:

1. heater is to make shell 1 with steel pipe (seamless pipe or welded pipe), and its inwall is encapsulating the helical form heating wire 3 of six coiled ∮ 1cm by ceramic material 2, forms a hollow electrothermal tube.

Lead end be at steel pipe of the left end of heater welding as left end pipe 4, a ceramic insulator 5 is assembled in the outer end of left end pipe.Encapsulate six wiring screw rod 8 that stretch into left end pipe 4 by ceramic clad material in the insulator.These screw rods are positioned at insulator 5 outer end of left end pipe 4.Each connects a phase power supply to adjacent wiring screw rod outer end, and six screw rods connect the power supply of three-phase 380V altogether, and the inner end of wiring screw rod is the lead-in wire interface 11 with six heating wire 3.Its coupling method is the stainless steel substrates of a 15 * 8mm of spot welding on each lead ends, is fastened on the inner end of six wiring screw rod more successively with screw, welds then.

3. supported end is as right-hand member pipe 4 at steel pipe of the right-hand member of heater welding.The upside of right-hand member pipe has the venthole of a ∮ 2mm, in order to the air pressure in the adjustable pipe.The outer end of right-hand member pipe is by fastening screw 7 fastening ceramic insulators 6.In right-hand member pipe and insulator 6 connection places, insulator 6 and fastening screw 7 encapsulation are located by the ceramic clad material 12 of sintering.The center of right-hand member pipe and heater connection place is the neutral connection point 10 that connects six heating wire terminations.

4. temperature-sensitive case 13 is packed in 3～5mm place on corrugation roller surface, and with the circuit of electrothermal tube forming control system.The composition of this circuit as shown in Figure 4, three in six heating wire connect three-phase alternating current, receive on the automatic control system of being made up of A.C. contactor and temperature-sensing element for three in addition.Temperature-sensing element in the temperature-sensitive case is to make with bimetal leaf.Each control system can be controlled upper and lower two electrothermal tubes simultaneously.

Major advantage of the present utility model has:

1. utilize single electrothermal tube can be connected into three phase mains. Because the heating wire in the electrothermal tube is to be divided into three groups and be connected into Y shape by six, neutral point is from the other end outlet of electrothermal tube, and its advantage is that electric current is little, and phase is partially saved power supply.

2. can be temperature automatically controlled.In automatic temperature control system since carton Corrugating Machine temperature height to the influence of temperature-sensing element, make its closing of contact or disconnection and drive the A.C. contactor action, reach the energising or the outage of these three heating wire, thereby the effect of temperature is regulated in performance, this temperature control, and equipment is simple, extensive, specification requirement is low, easy break-down is not simple to operate, the thermotonus sensitivity.

3. good insulation preformance is durable in use.Because heating wire is coated by pottery and is sealed in the metal body, do not contact with air, thereby the life-span is long.

4. resistance to bending is strong.This electrothermal tube is to become an integral body with metal sintering by ceramic material, has strengthened this resistance to bending sagging under long term high temperature of metal tube.

Claims (2)

1, a kind of carton Corrugating Machine dedicated electric-thermal pipe is made up of heater, lead end and supported end, it is characterized in that:

(1) said heater is the inwall in steel pipe shell [1], and the heating wire [3] by six spirally-wounds of ceramic clad material [12] encapsulation constitutes a hollow heater,

(2) said lead end, it is the left end pipe [4] that is welded with a steel at the left end of shell [1], an outer end assembling ceramic insulator [5] of end pipe, the inside of insulator, encapsulating six wiring screw rod [8] that stretch into left end pipe [4] by ceramic clad material [12], the end that wiring screw rod is exposed at the insulator outer end connects with power supply, and the inner end of stretching into the left end pipe connects with each lead-in wire of heating wire respectively

(3) said supported end is the right-hand member pipe [4] at a steel of right-hand member welding of heater; The outer end of right-hand member pipe is by the fastening insulator of fastening screw [7] [6]; In right-hand member pipe and insulator [6] connection place, insulator [6] and fastening screw [7] encapsulation are located by the ceramic clad material [12] of sintering.The center of right-hand member pipe and heater connection place is the neutral connection point [10] that connects the heating wire termination.

2,, it is characterized in that a venthole being arranged at the upside of right-hand member pipe ［ 4 ］ according to the said electrothermal tube of claim 1.

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