KR101122493B1 - Vertical type continuous heat treatment furnace - Google Patents

Abstract

PURPOSE: A vertical-type continuous heating furnace is provided to extend the heating time of a target and reduce an occupyied area since a second transfer unit installed in a heating furnace is arranged in a triangular shape. CONSTITUTION: A vertical-type continuous heating furnace comprises a first transfer unit(100), a heating unit(200), a body(10), a drying furnace(600), and a cooling device(700). The first transfer unit transfers a target to the body. The heating unit burns carbohydrates of an incoming target through the first transfer unit and cures the target. The body comprises a second transfer unit, an insulating unit(20), a hot-air circulating unit(400), and a discharge unit(500). The second transfer unit has a triangular shape to be able to delay heating time while transferring the target. The drying furnace dries the target heated by the second transfer unit.

Description

Vertical type continuous furnace {VERTICAL TYPE CONTINUOUS HEAT TREATMENT FURNACE}

The present invention relates to a vertical type continuous heating furnace, and more particularly, by arranging the conveying conveyor in a triangular shape in the heating body, the conveying means and the drying furnace and the cooling device, the heating time, that is, the residence time of the object is increased and installed. It relates to a vertical type continuous furnace with a minimum area.

The furnace is a furnace for heating metal materials, and is classified into heat treatment, forging, rolling, and the like depending on the use.

Heating furnaces for heat treatment include quenching furnaces, annealing furnaces, and soaking furnaces. Hot-stamping is an example of a metal material. The cold-rolled steel sheet is heated at a high temperature in a heating furnace, press-formed the heated metal material, and then hardened in a mold to increase the strength of the metal material. Height is construction method. Hot stamping is used to manufacture automotive parts such as impact beams, center pillars, etc., because of excellent moldability of metal materials and high strength.

As disclosed in US Pat. No. 6,564,604, hot stamping is an inline system in which various processes such as feeding, cutting, heating, forming and cooling a sheet of steel from a metallic material are used to improve productivity. Consists of.

Therefore, the hot stamping line for manufacturing automotive parts takes up a lot of installation space.

In the furnace, the cut sheet blank must be heated to high temperature for several minutes, so the heating process is a bottleneck process that generates dead time in the hot stamping line. There is a problem.

In addition, Korean Patent No. 10-0907265 hot stamping furnace is disclosed a technology that can reduce the installation space and solve the bottleneck process by the rotary table.

The technique of this patent document consists of a plurality of frames provided at equal intervals on the upper edge of the rotating plate, a plurality of heating furnaces provided in multiple stages on the frames, and a driving device for rotating the rotating plate. The rotating plate is rotated to the loading portion of the metal material by the driving of the driving device.

When one of the plurality of frames reaches the loading position by the rotation of the rotating plate, the operator loads or unloads the metal material for one of the plurality of heating furnaces. However, the hot stamping furnace has a limitation in reducing the installation space due to the structure in which a plurality of frames and a plurality of heating furnaces are installed on the rotating plate. In addition, the heating furnaces are configured individually, there is a problem that takes a lot of equipment costs and maintenance costs.

In addition, since the waste heat after combustion in the heating furnace is generally discharged to the atmosphere, it is a cause of warming and air pollution by the exhaust gas emission containing a bad odor and Co 2 and the like.

(Patent literature)

1. Publication No. 10-2006-0073244

2. US Patent No. 6,564,604

3. Patent No. 10-0907265

The present invention has been made to solve the above-mentioned problems of the prior art, an object of the present invention is to increase the heating time, that is, the residence time of the object by arranging the second transfer means installed in the furnace body in a triangle shape. Has its purpose.

Another object of the present invention is to minimize the area of the furnace system and at the same time be able to process a large amount of a large amount of objects in a short time.

The objects and advantages of the present invention will be described in more detail below, and will be further embodied by the examples. Further objects and advantages of the invention may be realized by the means indicated in the claims and combinations thereof.

The vertical type continuous heating furnace (1) of the present invention comprises: first conveying means (100) for conveying an object into a heating furnace body; And

Heating means (200) for burning the object and burning the carbohydrate of the object introduced through the first conveying means (100); And

Second heating means 300 is provided in a triangular shape so as to transfer the object in the heating furnace by the heating means 200 and delay the heating time during the transfer, the inside of the second conveying means 300 Insulation means 20 is formed to surround the outer wall, a hot air circulation device 400 for sending heat heated by the heating means 200 into the second transfer means 300, and the heating means 200 A furnace body 10 in which a discharge means 500 for discharging water vapor and toxic gas generated by the gas is installed; And

A drying furnace 600 for drying the object heated by the second transfer means 300 and a cooling device 700 for cooling the object from the drying furnace 600, and the second conveyance. The means 300 is provided with a trolley 110 for placing an object on the upper portion, and the trolley 110 is disposed between the first and second gears G1 and G2 which are installed before and after the transfer table 120. Advancing toward the second transfer means 300 by the chain (C) is installed, the second gear (G2) is rotated by one step motor (M) is installed at the bottom, installed in the step motor (M) The third gear G3 is coupled to the third gear G3 by the chain C, and the third gear G3 is installed on the same axis as the fourth gear G4 formed in the step motor M. The fourth gear G4 is meshed with the pinion 130, the cylinder 140 is installed at one end of the pinion 130, the pinion 130 is sealed when one step of the step motor (M) Simultaneously transferred to the linder 140, the trolley 110 installed at an upper portion moves the object to the second transfer means 300 by moving only one stroke.

In addition, the third gear (G3) is characterized in that the diameter is larger than the first and second gears (G1, G2) and many more.

In addition, the heating means 200;

A first burner 210 installed above the furnace body 10,

Hot air circulation device 400 for circulating the heat heated in the first burner 210 into a heating furnace,

It is characterized in that it further comprises a heating plate 220 is formed with a plurality of through-holes 221 to send the heat heated by the hot air circulation device 400 toward the second transfer means (300).

The discharge means 500 is installed on the furnace body 10, the second burner 510 is installed to reburn the water vapor and toxic gas from the furnace body 10; And

Chamber 520 is installed at regular intervals in order to increase the residence time of the toxic gas ignited by the second burner and the hole plate 530 is formed with a plurality of holes 531; And

The completely continuous hot heat passing through the chamber 520 is sent to the drying furnace 600 to dry the object.

In addition, the second transfer means 300 is the first to third transfer gears (G1, G2, G3) are arranged in a triangular shape in order to minimize the area of the main body of the heating furnace 10, the third transfer gear Ratchet gear (RG) and the rack (R) is provided in (G3) to prevent the reverse rotation of the transfer gear (G1, G2, G3).

Therefore, the vertical type continuous furnace according to the present invention arranges the second transfer means installed in the furnace main body in a triangular shape, thereby increasing the heating time, that is, the residence time of the object, and minimizing the installation area. By completely burning the toxic gas generated during heating and reusing the completely burned heat to the drying furnace, energy saving can be achieved.

1 is a structural diagram showing an entire system of a vertical type continuous furnace according to the present invention.
2 is a plan view of a vertical type continuous heating furnace according to the present invention.
3 is a view showing only the first transfer means applied to the vertical type continuous heating furnace according to the present invention.
Figure 4 is an enlarged view showing only the third gear portion constituting the second transfer means applied to the vertical type continuous heating furnace according to the present invention.
5 is a side view of a vertical type continuous furnace according to the present invention.
6 is a view showing only a partial extract of the drying furnace and the cooling device of the vertical type continuous heating furnace according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, the same names and shapes are denoted by the same reference numerals, and description thereof will be omitted.

The vertical type continuous heating furnace 1 according to the present invention has a basic configuration, as shown in FIG. 1, largely the first and second transfer means 100 and 300, the heating means 200, the heat insulation means 20, and hot air. The circulation device 400, the discharge means 500, the heating furnace body 10 is composed of.

As shown in FIG. 1 or 3, the first transport means 100 is provided with a trolley 110 for placing an object on an upper portion thereof, and the trolley 110 is installed before and after the transport table 120. The first and second gears (G1, G2) and the chain (C) installed between them advances toward the second conveying means 300, the second gear (G2) is installed in the lower step motor (M) 1 rotation, and is coupled to the third gear (G3) installed in the step motor (M) by the chain (C), the third gear (G3) is a fourth gear formed in the step motor (M) It is installed on the same axis as (G4), the fourth gear (G4) is meshed with the pinion 130, one end of the pinion 130, the cylinder 340 is installed to 1 of the step motor (M) At the time of rotation, the pinion 130 is moved toward the cylinder 140 and at the same time, the trolley 110 installed at the top moves only one stroke to send the object to the second transfer means 300. .

At this time, the third gear (G3) is larger than the first and second gear (G1, G2) is formed with a larger number of teeth.

In addition, the wheel 111 is installed below the trolley 110 so as to reciprocate along the upper surface of the transfer table 120.

 The second transfer means 300 is the first to third transfer gears (G1, G2, G3) are arranged in a triangular shape in order to minimize the area of the furnace body 10, as shown in FIG. In addition, the ratchet gear RG and the rack R are installed in the third transfer gear G3 to prevent reverse rotation of the transfer gears G1, G2, and G3.

In addition, the first to third transfer gears (G1, G2, G3) is driven by a chain (C), the chain (C) is a carrying piece 350 for heating a large amount of the object at regular intervals Many are installed and transported in a constant direction in a circular manner.

In addition, the heating means 200 is to incinerate the carbohydrate of the object entered through the first conveying means 100 and to sinter the object, the first burner 210 is installed in the furnace body 10 and the Hot air circulation device 400 for sending the heat generated from the first burner to the second conveying means, and a plurality of through-holes for sending the heat heated by the hot air circulating device 400 toward the second conveying means (300) 221 is formed of a heating plate 220 is formed.

In addition, the heat insulating means 20 is formed to surround the inner and outer walls of the second transfer means 300, it is preferable that the heat insulating means is a refractory brick.

In addition, the discharge means 500 for discharging the water vapor and toxic gas generated by the heating means 200 is installed on the furnace body 10, the water vapor and toxic from the furnace body 10 The second burner 510 is installed to reburn the gas, and the plurality of hole plates 530 are installed at regular intervals and a plurality of holes are formed to increase the residence time of the toxic gas ignited by the second burner. ) Is installed, and the hot heat that is completely continuous through the chamber 520 is sent into the drying furnace 600 so as to dry the object.

At this time, a control valve is installed in each inlet and outlet to control the amount of exhaust gas from the second transfer means 200 and the amount of completely burned gas to be sent to the drying furnace 600. This is related to the thermal power of the second burner, that is, the oxygen supply.

In addition, the drying furnace 600 has a structure similar to that of the second conveying means, as shown in FIG. 6, so that the first to third transfer gears G1, G2, and G3 are triangular in order to minimize the installation area. The third transfer gear (G3) is arranged in the arrangement, the ratchet gear (RG) and the rack (R) is installed to prevent the reverse rotation of the transfer gear (G1, G2, G3).

At this time, the drying furnace 600 and the cooling device 700 are installed symmetrically with each other, the first to third transfer gear (G1, G2, G3) is installed in the drying furnace and the cooling device to dry and cool in the transfer process It is designed to be done at the same time.

In addition, the drying furnace 600 is installed through the chamber 520, an auxiliary chamber 610 for protecting the completely continuous hot heat is installed to dry the object passing through the drying furnace.

At this time, the auxiliary chamber 610 is formed through, one side is formed with the suction portion 611 is sucked from the heat from the chamber 520, the heat entering through the suction portion 611 is hollow portion 612 Are kept in.

In addition, the first to third transfer gears (G1, G2, G3) are installed between the auxiliary chamber 610 formed through the through is configured to dry the object.

At this time, the same structure as that of the first transfer means is installed in the third transfer gear G3 installed on the cooling apparatus 700 to transfer the dried object to the cooling apparatus.

The cooling device 700 is for cooling an object, and as shown in FIG. 6, a plurality of cooling fans 710 for slowly cooling the object are installed on the front surface thereof.

Looking at the operation method and effect of the vertical type continuous heating furnace according to the present invention having such a configuration as follows.

As shown in FIG. 1, in a state in which the first burner 210 is sufficiently heated, the power is “on” while the object is placed on a trolley 310 installed on the first transfer means 100. In this case, the motor rotates one step by the step motor M, and the fourth gear G4 rotates by the rotation, and the pinion 330 gear meshed with the fourth gear G4 moves to the arrow A. FIG. As the cylinder 340 is pushed in the direction, the third gear G3 installed coaxially with the fourth gear G4 rotates, and the rotational force is controlled by the chain C. As it is transmitted to the second gears G1 and G2, the trolley 310 proceeds toward the second transfer means 300 to be sent to the carrying piece 350 constituting the second transfer means 300.

At this time, when the step motor (M) is rotated in reverse direction, the pinion 330 is returned to its original state, and accordingly the cylinder 340 is also returned, and the cart 310 is returned to its original state.

Therefore, the object can be sent to the second transfer means 300 by moving only one stroke.

In the above state, the object sent to the carrying piece 350 of the second transfer means 300 is heated while being slowly transported upward by the rotation of the first to third gears (G1, G2, G3).

That is, the heat pre-heated in the first burner 210 is sent to the second transfer means 300 by the hot air circulation device 400 through the plurality of through holes 221, so that the object is heated.

In addition, the water vapor or toxic gas generated in the first burner 210 and the second transfer means 300 is sent to the discharge means (500).

Then, the second burner 510 installed in the discharge means 500 operates to reburn the water vapor and the toxic gas from the second transfer means 300.

That is, the toxic gas ignited by the second burner 510 has a long residence time while passing through a plurality of holes 531 of the hole plate 530 installed in the chamber 520, so that water vapor and toxic gas are replayed. And the reburned heat is sent to the drying furnace 600.

Then, the object passing through the drying furnace 600 is naturally dried and cooled.

Therefore, a large amount of objects can be easily heated, dried, and cooled.

Although the present invention has been described with reference to the above-described preferred embodiments and the accompanying drawings, it is also possible to constitute different embodiments within the spirit and scope of the invention. Accordingly, the scope of the present invention is defined by the appended claims, and is not to be construed as limited to the specific embodiments described herein.

10: heating furnace body 20: heat insulation means
100: first transfer means 200: heating means
210,510: burner 220: heating plate
221: through hole 300: second transfer means
310: bogie 320: transfer tray
330: pinion 340: cylinder
400: hot air circulation device 500: discharge means
520: chamber 530: ball
531: hole 600: drying furnace
700: cooling device C: chain
G1, G2, G3, G4: Gear

Claims (7)

First conveying means for conveying the object into the furnace body; And
Heating means for incineration of carbohydrates of the object introduced through the first transfer means and for firing the object; And
Insulating means for transporting the object in the heating furnace by the heating means and having a triangular second conveying means so as to delay the heating time during conveying, and is formed to surround the inner and outer walls of the second conveying means; A heating furnace body provided with a hot air circulation device for sending heat heated by the heating means into a second transfer means, and discharge means for discharging water vapor and toxic gases generated by the heating means; And
A drying furnace for drying the object heated by the second transfer means and a cooling device for cooling the object from the drying furnace;
Vertical type continuous furnace with.
The method according to claim 1,
The first transfer means;
A trolley for placing the object on the upper part is installed, and the trolley is advanced toward the second conveying means by the first and second gears installed after the transfer table and the chain installed therebetween, and the second gear One rotation by a step motor installed in the step, coupled to the third gear installed in the step motor by a chain, the third gear is installed on the same axis as the fourth gear formed on the step motor, the fourth The gear is engaged with the pinion, and a cylinder is installed at one end of the pinion so that the pinion is transferred to the cylinder at the time of one rotation of the step motor. Vertical type continuous heating furnace, characterized in that.
The method according to claim 2,
The third gear is a vertical type continuous heating furnace, characterized in that the diameter is larger than the second gear and more.
The method according to claim 1,
The heating means is;
A first burner installed at an upper portion of the main body of the heating furnace,
Hot air circulation device for circulating the heat heated in the first burner into a heating furnace,
Vertical type continuous heating furnace characterized in that it further comprises a heating plate is formed with a plurality of through-holes for directing the heat heated by the hot air circulation device to the second transfer means.
The method according to claim 1,
The discharge means;
A second burner installed on the furnace body, the second burner being installed to reburn the water vapor and the toxic gas from the furnace body; And
A chamber installed at regular intervals to extend the residence time of the toxic gas ignited by the second burner and having a hole plate having a plurality of holes formed therein; And
Vertically continuous heating furnace, characterized in that the hot heat is passed through the chamber is completely continuous into the drying furnace to dry the object.
The method according to claim 1,
The second transfer means is a vertical type continuous heating furnace, characterized in that the first to third transfer gears are arranged in a triangular shape to minimize the area of the heating body.
The method according to claim 6,
A vertical type continuous heating furnace characterized in that the third transfer gear is provided with a ratchet gear and a rack to prevent the reverse rotation of the transfer gear.

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