CN2118960U

CN2118960U - Chain type continuous heat treating furnace chamber

Info

Publication number: CN2118960U
Application number: CN 92215065
Authority: CN
Inventors: 张海木
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-20
Filing date: 1992-01-20
Publication date: 1992-10-14

Abstract

The utility model discloses a chain (or net) type continuous heat treating furnace chamber, which is characterized in that a non muffle device and an electric heat radiating tube are arranged inside the furnace chamber in the transverse arrangement and supported by bricks; the lower part of the bottom plate of the movable furnace is provided with a bearing plate made of heat-resistant materials. An upper heating layer and a lower heating layer are provided with a full channel type circulation air passage. On the ground that the utility model has novel design, reasonable structure, and good air tightness and can match with a pressure-increasing type furnace door for use, the inside of the furnace chamber can generate the barotropic state higher than water column of the air pressure from 1 mm to 5 mm. Thus the whole performance of the continuous heat treating furnace chamber and the heat treatment quality of the component can be improved.

Description

Chain type continuous heat treating furnace chamber

The utility model relates to the configuration or the Equipment for Heating Processing of electrical heating element in the stove.

Chain (or net) belt continuous heat treating furnace has not constructional device of horse usually, also has or not constructional device of horse.Though existing no horse not the continuous heat treating furnace of structure saved the Muffle pot of making by heat-resisting alloy steel, but still the tank-like body of being made by silicon carbide class exothermic material is placed in the burner hearth, not constructional device is the same with horse is arranged like this, structurally exists same shortcoming.The one, furnace cavity is excessive, poor air-tightness; The 2nd, each warm area all is provided with blower fan, easily causes air channel circulation not smooth or the blind area occurs; The 3rd, pressure in the burner hearth is near or below normal atmosphere, promptly is negative pressure state.

Since above-mentioned all multifactor, cause the furnace gas consumption big, and furnace temperature is inhomogeneous, is difficult for defectives such as carburizing.

The purpose of this utility model is to provide a kind of positive-pressure type not have the chamber structure that horse is not installed, and can overcome above-mentioned defective effectively.

The purpose of this utility model is by upper and lower two rows are set in burner hearth, by electrothermal radiation tube with put an electric heating element that brick is combined into accordingly, and forms that from bottom to top hot gas flow circulation passage realizes.

Accompanying drawing 1 is the utility model chamber structure synoptic diagram, Fig. 2 is the structural representation of electrothermal radiation tube, Fig. 3 is the left side view of Fig. 2, Fig. 4 is the A-A sectional view of Fig. 2, Fig. 5, Fig. 7, Fig. 9 are for putting the brick outside view, Fig. 6, Fig. 8, Figure 10 are corresponding side-view, and Figure 11 is a supporting plate, and Figure 12 is the A-A sectional view of supporting plate.1 is body of heater among the figure, and 2 is heat-resisting light cinder brick, and 3 is inside wall, and 4 for putting brick, 5 is electrothermal radiation tube, and 6 for enclosing solar or lunar halo, and 7 is blower fan and fan blade, and 8 is upper air duct, 9 is the burner hearth top board, and 10 is the porcelain spheroid, and 11 is supporting plate, and 12 is the travelling oven base plate, 13 is chain belt, and 14 is lower air duct, and 15 is gap slot, and 16 is resistive band (silk), 17 are the heating sleeve pipe, and 18 are the perforation clamping plate, and 19 is eduction rod, and 20 are the insulation fitting sleeve, 21 is weighting material, and 22 is joint, and 23 is chute, and 24 is ventilating heat dissipating hole.

In conjunction with the accompanying drawings, provide embodiment of the present utility model.

Body of heater 1 is built into by heat-resisting light cinder brick among Fig. 1, inside wall 3 is fixed on the inboard wall of burner hearth, above inside wall 3 and the bottom be mounted with equably respectively and put brick 4, be mounted with electrothermal radiation tube 5 between the brick again putting, its end is embedded in the burner hearth inside wall, and rest part is then put mutually or inlayed with putting brick, and each interval cooperates, be the combination shape and use, put brick and electrothermal radiation tube and all make detachable and the last zone of heating of formation.

Enclose solar or lunar halo 6 and be placed in the both sides of impeller of blower 7, be positioned in the middle of the burner hearth, the 8th, upper air duct is provided with gap slot 15 in the and arranged on left and right sides of last zone of heating, forms full tunnel formula circulation air path like this in the both sides of blower fan.9 is the burner hearth top board.2 is heat-resisting light cinder brick, places the circulation air path two-port respectively, rises and seals ponding.

In like manner, be used in combination at interval and form down zone of heating by putting brick 4 and electrothermal radiation tube 5, supporting plate 11 is placed in to be put above brick and the electrothermal radiation tube, because of supporting plate is provided with ventilating heat dissipating hole 24, lower air duct 14, the following full tunnel formula circulation air path of zone of heating under when work, equally also forming like this.

On supporting plate 11, be arranged to rare plural chute 23 simultaneously,, its objective is to support travelling oven base plate 12 and come and go and slide, driving chain belt 13 delivery workpiece are advanced for porcelain spheroid 10 slip therein.

Electrothermal radiation tube 5 is by resistive band (or resistance wire) 16, and heating sleeve pipe 17 and perforation clamping plate 18 constitute.Its afterbody is by resistive band (or resistance wire) eduction rod 19, and insulation fitting sleeve 20 and heat resistance fiber weighting material 21 are formed, and both are joined by joint 22 and form.Fig. 3 is its outside view, is flat or rectangle, and Fig. 4 is an electrothermal radiation tube A-A sectional view.

Fig. 5, Fig. 7, Fig. 9 have provided three kinds of outside views of putting brick, can select for use as required.

Supporting plate is made by the silicon carbide exothermic material, and plate is provided with chute 23, ventilating heat dissipating hole 24.

The utility model compared with prior art has following advantage:

(1) the furnace cavity volume reduces, and utilizes the utility model take 200 kilograms of output per hour as example, and its combustion space only needs 0.84 cubic metre, if adopt existing chamber structure, volume needs 2.7 cubic metres.

(2) zone of heating is arranged at the burner hearth upper and lower part, with the heating of workpiece apart from shortening, and the burner hearth circulation air path is unimpeded, heat exchange is complete.

(3) electrothermal radiation tube is flat, helps increasing heating area, is used in combination with putting brick, both can increase electrothermal radiation tube intensity, can change its thermal radiation direction again, and its thermo-efficiency is improved.

(4) be the malleation shape in the stove as if making, promptly furnace pressure then can be obtained better result of use greater than atmospheric 1～5mm water column height.

The utility model has following effect:

(1) can economize on electricity 10～15%

(2) temperature uniformity is good, and the temperature difference is not more than 3 ℃

(3) easily carburizing

(4) resistance to air loss is good

The utility model can be applicable to other continuous heat treating furnaces, as carburizing glowing furnace, and annealing furnace, tempering stove, cast chain type furnace, vacuum oven, sintering oven, aspects such as push rod furnace can satisfy processing requirements such as carburizing and quenching, carbonitriding, tufftride.

Claims

1, chain-belt type continuous heat treating furnace burner hearth, it partly is made up of body of heater, inside wall, electrothermal radiation tube, driving chain belt, travelling oven base plate etc., it is characterized in that in burner hearth, being provided with upper and lower two rows by electrothermal radiation tube with put an electric heating element that brick is combined into accordingly, and formation thermal current passway from bottom to top, be that electrothermal radiation tube 5 is to place to put on the brick 4, and join at interval to being used and form upper and lower two row's zones of heating; The left and right sides at last row's zone of heating is provided with gap slot 15, and following row's zone of heating top is provided with supporting plate 11.

2,, it is characterized in that the cross section of electrothermal radiation tube is flat or rectangle according to the said chain-belt type continuous heat treating furnace of claim 1 burner hearth.

3, described by claim 1, it is characterized in that putting brick and be " I ", " ⊥ ", " recessed " shape.

4, described by claim 1, it is characterized in that being provided with blower fan, fan blade 7 in the middle of the zone of heating, enclose solar or lunar halo 6, both sides are provided with two above gap slots 15 at least.

5, described by claim 1, it is characterized in that the supporting plate face is provided with and has more than two the chute 23 and the ventilating heat dissipating hole 24 that can slide for porcelain spheroid 10 at least.