JPH058399U - Electric furnace heater connection mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To significantly improve the work efficiency of the electric furnace heater connection work, especially at the lower end of the heater under poor working conditions. [Structure] Each of the left and right heaters 9 penetrating through the furnace body 7 and protruding vertically is connected by a wiring mechanism 17, which connects an upper end portion and a lower end portion of the heaters so that electricity flows from one heater row to the other heater row.
In the electric furnace connected by 19, at least the lower-side wiring mechanism 19 has an outer fixed holding body 21 and an inner movable holding body 23 that simultaneously hold the lower ends of the left and right heaters from the outer side and the inner side, and the inner side. Driving means 25 for moving the movable holding body 23 forward and backward simultaneously with respect to the outer fixed holding body 21.
It is characterized by being composed of and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a heater wiring mechanism for an electric furnace.

[0002]

[Prior Art]

 Conventionally, the left and right heaters penetrating through the furnace body and protruding vertically are connected by a wiring mechanism to the upper and lower ends of the heaters so that electricity flows from one heater row to the other heater row. Specific examples of the connection mechanism are shown in FIGS. 5 and 6.

FIG. 5 shows a wire connection mechanism 103 for connecting the upper end portion of the heater 101. The wire connection mechanism 103 at the upper end portion fixedly supports the U-shaped connection terminal 105 and the connection terminal 105 to the heater 101. It consists of a clamp 107. Further, the wiring mechanism 109 on the lower end side includes a W-shaped connection terminal 111 that engages with the two heaters 101 at the same time as shown in FIG. 6, and a pair of clamps 113 that fixedly support the connection terminal 111 on the heater 101. 7 and a schematic diagram of the whole is shown in FIG.

As a result, when a current is input from the left input terminal 115 as shown by an arrow, electricity flows from the left heater 101 row to the output terminal 117 via the right heater 101 row.

[0005]

[Problems to be solved by the device]

 As described above, each of the left and right heaters 101 connects the upper end portion and the lower end portion by the wiring mechanisms 103 and 109, but the heater 101 is retrofitted at the site of the user who purchased it.

That is, since the heater 101 is made of a fragile ceramic and deteriorates along with deterioration of water content, the heater 101 is shipped as a semi-finished product excluding the heater 101. ..

For this reason, the heater 101 is retrofitted on site, but the wiring of the heater 101 is described above at the upper end and the lower end of the heater 101 that penetrates the furnace body 119 and projects vertically. The connection work is performed by the connection mechanisms 103 and 109.

In this case, at the upper end portion of the heater 101, by removing the outer ceiling, the upper end portion of the heater 101 is exposed, so that a working space can be secured and the work becomes easy. On the other hand, at the lower end portion of the heater 101 protruding downward from the furnace body 119, the rear panel 121 is removed for the work, but it is difficult to see because it is on the lower side of the furnace body 119. At the same time, the work space was severely restricted, and the connection work was extremely troublesome.

Therefore, an object of the present invention is to provide a heater wire connection mechanism for an electric furnace that enables quick heater connection work by a simple device.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, the left and right heaters penetrating through the furnace body and protruding vertically are arranged so that electricity flows from one heater row to the other heater row. In the electric furnace in which at least the lower side wiring mechanism is clamped to the lower end portions of the left and right heaters from the outer side and the inner side at the same time, the electric fixed furnace and the inner movable clamp body are connected to each other by a wiring mechanism And a drive means for moving the inner movable clamp body forward and backward with respect to the outer fixed clamp body at the same time.

[0011]

[Action]

 According to such an electric furnace, the movable holding body is retracted from the fixed holding body and is opened, and the wiring mechanism is set in the lower portion of the furnace body before shipment. Next, at the site, a heater is inserted from above the furnace body, and the lower end of the penetrating heater is made to face between the movable holding body and the fixed holding body. Then, after the insertion of each heater is completed, the movable holding body is moved forward by the driving means. As a result, the lower end portion of the heater is sandwiched by the movable sandwiching body and the fixed sandwiching body, and the connection work can be completed quickly even at the lower end portion of the heater under poor conditions.

[0012]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings of FIGS.

In the figure, 1 indicates an electric furnace body, and 3 indicates an opening / closing door. The electric furnace body 1 has a furnace body panel 5 and a furnace body 7 incorporated in the furnace body panel 5, and the furnace body 7 is provided with a heater 9 for increasing the temperature in the furnace.

Eight heaters 9 are arranged substantially parallel to each other on the left and right, and an upper end portion and a lower end portion thereof penetrate through a mounting hole 10 formed in the furnace body 7 and project vertically.

The upper ends of the heaters 9 protruding above the furnace body 7 are connected by a wire connection mechanism 17 including a U-shaped connection terminal 13 extending from a copper plate 11 and a clamp 15.

Further, the lower end portions of the heaters 9 projecting downward from the furnace body 7 are connected to each other by a wire connection mechanism 19 that is set under the furnace body 7 in advance.

As shown in FIG. 2, the wiring mechanism 19 includes an outer fixed holding body 21 and an inner movable holding body 23 fixed to the base plate 20, and a drive for moving the movable holding body 23 forward and backward with respect to the fixed holding body 21. The fixed holding body 21 is integrally molded continuously with an insulating material such as ceramics, and has a heater holding surface 21a formed inside. The heater holding surface 21a has a V-shape that also serves as a guide surface for guiding and guiding the lower end of the heater 9 pressed by the movable holding body 23 to a correct position. The lower end surface of the heater 9 is composed of a plate 22 made of an insulating material such as ceramic.

The movable holding body 23 is made of a metallic material that conducts electricity and is disassembled into four pieces each on the left and right. The front surface side of each movable sandwiching body 23 serves as a sandwiching pressing surface 23a for simultaneously pressing the lower ends of the two heaters 9 and faces the heater holding surface 21a of the fixed sandwiching body 21. Further, the movable holding body 23 is independently arranged and insulated by an insulating material 24, and a pair of support arms 27 extended from the rear surface is used to slide a slide member 29 which can be slid in the arrow A direction via the insulating material 24. It is mounted and supported while being constantly urged toward the fixed holding body 21 side by the urging spring 31 provided on the support arm 27.

The drive means 25 has a screw rod 35 that can be rotated in the forward and reverse directions by an operation handle 33, a link screw 37 screwed to the screw rod 35, and one end of which is pivotally supported by the link screw 37. An end is composed of a pair of links 39, 39 pivotally supported by the slide member 29, and both ends of the screw rod 35 are rotatably supported by bearings 41. The links 39, 39 are arranged in an X shape when viewed from a plane. For example, the screw rod 35 is normally rotated and the link screw 37 is moved forward (arrow B) to press the slide member 29 outward. To function. Further, the screw rod 35 reversely rotates and the ring screw 37 retracts (in the direction opposite to the arrow B), so that the slide member 29 is pulled inward.

On the other hand, there is a furnace body cooling passage 43 between the furnace body 7 and the furnace body panel 5, and a plurality of furnace body panel 5 opening to the outside is formed in the upper part of the furnace body cooling passage 43. Is provided with an opening 45. Further, a current plate 47 is arranged in the lower cooling passage of the furnace body cooling passage 43, and a fan 49 for sending cooling air is connected.

The current plate 47 functions to guide the cooling air from the fan 49 back and forth and left and right, and is supported by the furnace panel 5 via brackets 51.

A pair of fans 49 is arranged on the left and right sides and rotates to function to blow outside air toward the current plate 47. The fans 49 are installed and set on the furnace body panel 5.

The open / close door 3 is openably / closably supported with a hinge as a fulcrum, and has a heat-resistant lid 55.

The heat resistant lid 55 is made of a heat resistant material and functions to close the entire opening of the furnace body 7 when the door is closed.

Between the heat-resistant lid portion 55 and the door panel 57 of the opening / closing door 3 is a door cooling passage 59, and below is a communication opening 60 corresponding to the communication opening 42 of the furnace body cooling passage 43. Communicate with each other. Further, the upper part communicates with a plurality of openings 61 opened in the upper part of the inner side of the door panel 57 so as to be pulled out to the outside.

In the electric furnace configured as described above, the wiring mechanism 19 for the lower end is shipped in a state of being set in the lower part of the furnace body 7 in advance, so that the upper part and the rear part of the furnace body panel 5 are on-site. After removing and, the heater 9 is inserted into the mounting hole 10 of the furnace body 7. The lower end of the inserted heater 9 projects downward from the furnace body 7 and receives the load of the heater 9 by the plate 22. Further, the lower end portion of the heater 9 faces between the movable holding body 23 and the fixed holding body 21. Next, when the movable holding body 23 is moved forward with respect to the fixed holding body 21 by operating the operation handle 33 extending rearward, the heater 9 is correctly positioned by the V-shaped heater holding surface 21a. It will be pinched.

Therefore, the lower side wiring work with bad working conditions can be completed quickly.

Next, the upper end of the heater 9 is attached by engaging the U-shaped connecting terminal 13 with the heater 9 and fixing them integrally with the clamp 15. In this case, since the work space is secured for the connection work, there is no hindrance to the work and the connection work can be performed easily.

Although it has been described that the upper end of the heater 9 is connected by the wiring mechanism 17 including the connection terminal 13 and the clamp 15, the movable holding body 23, the fixed holding body 21 and the driving means 25 are used. The wire connection mechanism 19 may be employed.

[0030]

[Effect of the device]

 As described above, according to the heater connection mechanism of the electric furnace of the present invention, it becomes possible to rapidly perform the connection work especially at the lower end portion of the heater with bad working conditions, and the work efficiency is greatly improved. Can be achieved.

[Brief description of drawings]

FIG. 1 is an overall schematic plan view showing a connection state of a heater of the present invention.

FIG. 2 is an overall plan view of a wire connection mechanism that connects a lower end portion of a heater.

FIG. 3 is a plan view showing a part of a wire connection mechanism that connects an upper end portion of a heater.

FIG. 4 is a schematic sectional side view of an electric furnace embodying the present invention.

FIG. 5 is a plan view of a part of a conventional connection mechanism for connecting an upper end portion of a heater.

FIG. 6 is a plan view of a part of a conventional connection mechanism for connecting a lower end portion of a heater.

FIG. 7 is a schematic plan view similar to FIG. 1 showing a conventional example.

[Explanation of symbols]

 7 Furnace Body 9 Heater 17 Wiring Mechanism for Upper End of Heater 19 Wiring Mechanism for Lower End of Heater 21 Fixed Clamping Body 23 Movable Clamping Body 25 Driving Means

Claims (1)

[Claims for utility model registration] Claims: 1. The left and right heaters penetrating through the furnace body and protruding vertically are provided with upper and lower end portions of the heaters so that electricity flows from one heater row to the other heater row. In an electric furnace connected by a wire connection mechanism, at least the wire connection mechanism on the lower side, an outer fixed clamp body and an inner movable clamp body that simultaneously clamps the lower end portions of the left and right heaters from the outside and the inside,
A heater wire connection mechanism for an electric furnace, comprising: a drive means for simultaneously moving an inner movable clamp body forward and backward with respect to an outer fixed clamp body.