JP2005037098A - Heat treatment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that the heat energy can not be efficiently consumed as a temperature of powder itself can not be correctly measured in heating the powder, and the cost for treating the powder is increased because of sampling loss. <P>SOLUTION: This heat treatment device comprises a wire 8 penetrated through the inside of a heating container 4 receiving the powder to perform the heat treatment, and a temperature detecting means 11 locked on the way of the wire 8 and vertically movable in the heating container 4. A feeder 5 for supplying the powder is mounted on a front end part of the heating container 4, and a shooter 7 is mounted on a rear end part of the heating container 4. The temperature detecting means is composed of a guide 20 relatively moved to the wire, and a weight 21 provided with a thermo couple 22, and the tension of the wire 8 is adjustable. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a heat treatment apparatus for heat treating various industrial powders.

  When heat-treating various industrial powders, the rotating body itself and the atmosphere are heated while supplying powder into a cylindrical rotating body (for example, a rotating retort in a rotary kiln) using a feeder device. The powder is then dried or heat treated. For example, a conveyor belt is arranged in the heating furnace body, a powder raw material is supplied to the conveyor belt from a raw material storage tank at one end, the powder raw material on the conveyor belt is heated by a heater, and a thermocouple Is known to be configured to discharge to a product storage tank while measuring and controlling the ambient temperature in the main body of the heating furnace (Patent Document 1).

  Alternatively, a method for roughly measuring the temperature of the powder by measuring the outer surface temperature of the side wall of the rotating body with a plurality of thermocouples while heating the rotating body containing the powder disposed in the heating furnace from the outside with heating means. Has also been proposed (Patent Document 2).

JP 07-242412 A JP-A-10-279334

  Even when heat treatment is performed by passing the powder through a rotary retort such as a rotary kiln, the temperature of the powder itself is not measured as described above, but the ambient temperature inside the heating furnace side wall or inside is measured. At present, the temperature of the powder is predicted. However, if the temperature of the powder itself is known, the exact temperature range (temperature difference between the upper limit temperature and the lower limit temperature, or the heating temperature range) during the heat treatment can be determined, and efficient consumption of heat energy and powder This is useful for improving the processing quality and yield. Conventionally, since the temperature of the powder itself is unknown, when the passage time and the heat treatment temperature are set, a sampling inspection is performed several times during the heat treatment to determine the treatment conditions such as the passage time and the heat treatment temperature. When the raw material powder is expensive, such a test process has been a factor in increasing the powder processing cost due to a sampling loss.

  The present invention is intended to solve the problem that the temperature of the powder cannot be measured accurately, so that the heat energy cannot be efficiently consumed, or the powder processing costs increase due to poor quality or sampling loss. is there.

In the first aspect of the present invention, the heat treatment apparatus includes a heating container that receives the powder and heat-treats, a flexible wire that penetrates the inside of the heating container, and is held in the middle of the wire. And a temperature detecting means capable of moving up and down.

  The invention according to claim 2 is characterized in that the temperature detecting means comprises a guide that moves relative to the wire, a thermocouple attached to the guide, and a weight attached to the guide.

  The invention according to claim 3 is characterized in that the temperature detecting means is provided with tension adjusting means for the wire at the end of the wire, and the thermocouple can be moved up and down by adjusting the tension of the wire. .

  According to the heat treatment apparatus of the present invention, since the temperature of the powder itself can be detected accurately, the heat treatment temperature can be set quickly. Further, since the reproducibility is high with respect to the setting conditions of the heat treatment, it is possible to perform heat treatment with high quality and little variation, and the operating rate of the heating container is increased, so that productivity can be drastically improved. Further, even when the raw material powder is expensive, waste due to sampling loss is eliminated, and an increase in cost can be prevented.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall schematic diagram of a heat treatment apparatus 1 of the present invention. The heat treatment apparatus 1 includes a heating chamber 2, a heating furnace 3, a heating container 4, a preliminary supply feeder 5, a powder supply feeder 6 that supplies powder to the heating container 4, and heat-treated powder. A shooter 7 for discharging the body, a flexible wire 8 arranged so as to penetrate the heating container 3, a pedestal frame 9 for placing them, and the temperature of the powder attached to the wire 8 And temperature detecting means 11 for directly detecting.

  2 is a partially enlarged view of the powder supply feeder 6, the heating container 3, and the shooter 7, and FIG. 3 is an AA arrow view of FIG. 2, and shows the inside of the heating container 3. FIG.

  The core part of the heat treatment apparatus of the present invention includes a heating container (rotary body) 4 that receives the powder M and heat-treats it, and penetrates the inside of the heating container 4, with one end protruding out of the heating container 4 and a fixed part. The wire 8 is fixed to the other end, and the weight 10 is divided into several pieces 10a, 10b, 10c,... 3 and temperature detecting means 11 that can be moved up and down so as to be buried in the powder M. A powder supply feeder 6 for supplying the powder M is disposed at the front end of the heating container 4, and a shooter that discharges the heat-treated powder M at the rear end of the heating container 4. 7 is arranged.

  The temperature detecting means 11 is attached to a guide 20 provided with a hole for passing the wire 8 therein (this will be described later). Further, a preliminary supply feeder 5 is disposed in front of the powder supply feeder 6 so as to stock the powder and supply the powder to the powder supply feeder 6.

  As the heating container 4, for example, a rotary retort is used in a rotary kiln, and the ends are supported by rotation support means 13 and 14. Specifically, as these rotation support means 13, 14, a large gear is attached to the heating container 4, a driving device that is driven by a pinion, a large friction wheel is attached to the heating container 4, and the large friction wheel is driven by a small friction wheel. There are various conceivable devices such as a drive device for driving the chain or a drive device by chain drive.

  The heating container 4 is installed in the heating chamber 2 together with the heating furnace 3 and is appropriately heated by burners 15, 15,... Installed in the lower part of the heating container 4. Further, exhaust ports 16, 16,... For exhausting exhaust gas from the heating chamber 2 are provided in the upper part of the heating furnace 3, and exhaust gas heated from the ducts 17, 17,. Is done. The heating container 4, the powder supply feeder 6, the shooter 7, the heating furnace 3, and the like are installed on a pedestal frame 9, and the pedestal frame 9 is provided with a rotation support table 18 at one end. A jack 19 is installed at the other end of the pedestal frame 9. The tilting means composed of the rotation support base 18 and the jack 19 tilts the entire pedestal frame 9. That is, the processing speed (time) of the powder M to be heat-treated can be determined by the inclination angle of the pedestal frame 9.

  Next, FIG. 4 (A) is a diagram showing the configuration of the powder temperature measuring device when the temperature detecting means 11 attached to the wire 8 penetrating the heating container 4 is provided. These are the P arrow views of FIG. 4 (A). As described above, inside the heating container 4, a plurality of end portions of the wire 8 are fixed to an appropriate position of the powder supply feeder 6, for example, in the cylindrical axis direction, and the other end portion is detachable. A wire 8 provided with weights 10a, 10b, 10c,... Is arranged and stretched. As shown in FIG. 5, the wire 8 has a T-shaped guide 20 that is movable in the wire direction through the wire 8, a weight 21 that is integrally attached to the guide 20, and a weight 21. A temperature measuring means 11 composed of a thermocouple 22 is attached. The other end of the wire 8 is wound around a fixed portion, for example, a wheel 23 whose axis is oriented in the vertical direction in the vicinity of the shooter 7, and the wire 8 is bent in a substantially right angle direction and pulled out to the outside. A plurality of weights 10 a, 10 b, 10 c,... Are detachably mounted on the attached wheel 24 with the shaft oriented in the horizontal direction. These weights 10a, 10b,... Serve as tension adjusting means for the wire 8. The vertical movement mechanism of the temperature detection means 11 will be described later.

  The wire 8 is drawn to the outside through a seal portion 25 provided on the side wall of the heating chamber 3. As shown in FIG. 6, the seal portion 25 includes a receiving member 25a fixed to the shooter 7, a packing 25b accommodated in the receiving member 25a, and a lid member 25c that holds and fixes the packing 25b. The As the material of the packing 25b, a heat-resistant packing material such as graphite packing is appropriate. Further, the wire 8 is passed through the packing 25b, and the wire 8 moves relative to the packing 25b by the vertical movement of the temperature detecting means 11 to which the thermocouple 22 is attached. Therefore, a material having wear resistance is preferably used as the packing 25b.

The temperature detection means 11 is moved up and down in the heating container 4 at the time of powder measurement (see FIGS. 4A and 4B).
For example, in order to reduce the amount of the powder M in the heating container 4 or to measure the temperature in the lower part of the powder M, if the weights 10a, 10b, 10c,. Since the weight 21 is relatively heavy, it hangs downward as a whole. Therefore, it is possible to measure the temperature inside the powder M or in a deep part inside. On the other hand, in order to increase the amount of powder or to measure the temperature inside the powder M, if the weights 10a, 10b, 10c,. As a whole, it moves upward as a whole. Therefore, it is possible to measure the temperature inside the powder M or in a shallow portion inside.

  Next, when changing the axial measurement position of the cylindrical body of the powder M inside the heating container 4, a winding device (not shown) for the wire 8 is provided on the side of the powder feeder 6 and driven to wire. When 8 is wound or unwound, the temperature detecting means 11 can move in the cylindrical axis direction and change the measurement position of the powder M to be measured. Alternatively, as shown in FIG. 7, the metal fitting 26 is fixed to the T-shaped guide 20, the wires 27 and 28 are attached to the left and right of the metal fitting 26, and the T-shaped guide 20 is operated by operating the wires 27 and 28. You may make it slide with respect to the wire 8. FIG.

  Although the best mode for carrying out the invention shown in the drawings is as described above, the invention may be further modified. For example, the heating container 4 is a rotary kiln. However, the heating kiln 4 is not limited to the rotary kiln and is configured such that the conveyor moves as a cylindrical non-rotating heating container 4, and powder is supplied to the conveyor for heating. You may make it discharge | emit to the shooter 7 after heat-processing in the container 4. FIG. As shown in FIG. 8, the temperature detecting means 11 is provided with a guide 29 with a wheel 30 attached to the T-shaped guide 20 through the wire 8, and a separate wheel 30 is provided on the guide 29. While securing the wire 32, the weight 33 with a metal fitting to which the thermocouple 22 is attached may be fixed, and the wire 32 may be wound up or down outside the heating container 4 and moved up and down. In this case, the wire 8 tension adjusting means (weights 10a, 10b,...) Is not necessary. Further, a rail (not shown) may be used in place of the wire 8, and the guide 20 may move on the rail.

  INDUSTRIAL APPLICABILITY The present invention can be applied to the industrial fields of various industrial powders that require accurate knowledge of the temperature of the powder when the raw material powder is heat-treated.

It is the whole powder heating apparatus provided with the powder temperature measuring device of the present invention. FIG. 3 is a partially enlarged view of a powder supply feeder, a heating container, and a shooter part constituting the powder temperature measuring device of the present invention. It is an AA arrow line view of FIG. FIG. 4A is a diagram showing a configuration of a powder temperature measuring device in the case of using temperature detecting means attached to a wire penetrating the inside of the heating container, and FIG. It is a P arrow view of). It is a figure which shows the component of a temperature detection means. It is a figure which shows the structure of the seal | sticker part for letting the wire provided in the side wall of a heating furnace pass. It is a figure which shows the example of the method of moving a temperature measuring means to an axial direction within a heating container. It is a figure which shows the other component of the temperature measurement means which comprises a powder temperature measuring apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat processing apparatus 2 Heating chamber 3 Heating furnace 4 Heating vessel 6 Powder feeder 7 Shuter 8 Wire 9 Base frame 10 Weight 11 Temperature detection means 18 Rotation support stand 19 Jack 20 Guide 21 Weight 22 Thermocouple 25 Seal part

Claims (3)

  A heating container that receives and heat-treats the powder, a flexible wire that penetrates the inside of the heating container, and a temperature that is locked in the middle of the wire and can be moved up and down in the heating container. A heat treatment apparatus comprising: a detecting means;   2. The heat treatment apparatus according to claim 1, wherein the temperature detection means includes a guide that moves relative to the wire, a thermocouple attached to the guide, and a weight attached to the guide.   3. The temperature detecting means is provided with a tension adjusting means for the wire at an end of the wire, and the thermocouple can be moved up and down by adjusting the tension of the wire. The heat processing apparatus as described in.

Images