JP5651001B2

JP5651001B2 - Vertical electric furnace ceiling lid structure

Info

Publication number: JP5651001B2
Application number: JP2010276626A
Authority: JP
Inventors: 健二柳瀬; 達也兼武
Original assignee: Sanken Sangyo Co Ltd
Current assignee: Sanken Sangyo Co Ltd
Priority date: 2010-12-13
Filing date: 2010-12-13
Publication date: 2015-01-07
Anticipated expiration: 2030-12-13
Also published as: JP2012127524A

Description

本発明は、電力によって金属を溶解する縦型電気炉の天井蓋構造に関するものである。 The present invention relates to a ceiling lid structure for a vertical electric furnace in which metal is melted by electric power.

従来から、電力を利用して金属を溶解する炉として、縦型の電気炉が多く使用されている。この縦型電気炉は、天井部が開口した炉本体と、その天井開口部を開閉する蓋本体（天井蓋）を備える。 Conventionally, a vertical electric furnace is often used as a furnace for melting metal using electric power. This vertical electric furnace includes a furnace body having a ceiling portion opened and a lid body (ceiling lid) for opening and closing the ceiling opening portion.

また、縦型電気炉には、炉本体を一体化させた一体式の他に、図６に示すように、炉本体１００を中央で左右対称に分割した２分割式がある。この２分割式の縦型電気炉は、炉本体１００を左右方向に分離した状態で、前後方向から金属を入れることができるので、特に大きな金属を溶解する際に適している。炉本体１００の分割及び合体は、レール１３０上に載せられた左側炉体１００ａと右側炉体１００ｂを離間及び接近させることによって行われるようになっていて、この２分割式の縦型電気炉も、その天井開口部を開閉する蓋本体１１０を備えている。
蓋本体１１０は、その上部に係止したチェーン１２１を電動モータＭの駆動よって巻くように構成された開閉装置１２０によって、炉本体１００の上面から天井側に上昇させられたり、逆に下降させられたりする。 In addition to the integrated type in which the furnace main body is integrated, the vertical electric furnace includes a two-part type in which the furnace main body 100 is divided symmetrically at the center as shown in FIG. This two-divided vertical electric furnace is particularly suitable for melting a large metal because a metal can be inserted from the front-rear direction with the furnace body 100 separated in the left-right direction. The division and coalescence of the furnace main body 100 are performed by separating and approaching the left furnace body 100a and the right furnace body 100b mounted on the rail 130, and this two-divided vertical electric furnace is also used. The lid body 110 for opening and closing the ceiling opening is provided.
The lid main body 110 is raised from the upper surface of the furnace main body 100 to the ceiling side or is lowered downward by an opening / closing device 120 configured to wind a chain 121 locked to the upper portion thereof by driving the electric motor M. Or

こうした縦型電気炉において、蓋本体は、閉鎖状態では、その自重によって炉本体の天井開口部を塞ぎ、炉内の温度低下を抑制している。なお、自重を利用した２分割式の縦型電気炉における蓋本体の構造は、例えば特許文献１に開示されている。 In such a vertical electric furnace, in a closed state, the lid body closes the ceiling opening of the furnace body by its own weight, and suppresses a temperature drop in the furnace. In addition, the structure of the lid body in the two-divided vertical electric furnace using its own weight is disclosed in Patent Document 1, for example.

特開２００７−５１８４４号公報JP 2007-51844 A

しかしながら、従来の蓋本体（天井蓋）はその自重のみで炉本体の天井開口部を塞ぐ構成であるため密閉度が十分ではなく、炉内の温度低下を効果的に抑制することができないといった問題がある。 However, since the conventional lid body (ceiling lid) is configured to block the ceiling opening of the furnace body only by its own weight, the degree of sealing is not sufficient, and the temperature drop in the furnace cannot be effectively suppressed. There is.

そこで、本発明の目的とするところは、炉内の温度低下を効果的に抑制することのできる縦型電気炉の天井蓋構造を提供することにある。 Then, the place made into the objective of this invention is providing the ceiling-cover structure of the vertical electric furnace which can suppress the temperature fall in a furnace effectively.

上記の目的を達成するために、本発明の請求項１に記載の縦型電気炉の天井蓋構造は、左右に分割可能な左側炉体（４０ａ）と右側炉体（４０ｂ）を合体してなる炉本体（４０）の天井開口部（４１）を開閉自在の蓋本体（１０）で覆うようにした２分割式の縦型電気炉における天井蓋構造であって、
前記蓋本体（１０）の外周端部には、複数の受部（１１）が所定間隔をおいて設けられるとともに、前記炉本体（４０）の外周面上部には、上下方向にロッド（３１）を伸縮させるシリンダー（３０）と、略水平に延び回転自在の支軸（２１）に固定されるか又は略水平に延びる支軸（２１）に回転自在に連結され、先端部（２０ａ）が下向き回転により前記受部（１１）に接近し当接する位置に配置されるとともに基端部（２３）が前記シリンダー（３０）のロッド（３１）に回転自在に連結され、前記受部（１１）にそれぞれ対応したリンク部材（２０）とが設けられ、前記シリンダー（３０）のロッド（３１）を上昇させることによって、前記リンク部材（２０）を回転させて、前記リンク部材（２０）の先端部（２０ａ）で前記蓋本体（１０）の受部（１１）を下方に押圧し、前記炉本体（４０）の天井開口部（４１）を覆うように載せられた前記蓋本体（１０）を、前記炉本体（４０）の上端に対して強く押し付けるようにし、しかも前記炉本体（４０）の上端部に、水平方向でかつ前記炉本体（４０）の上端よりも下方に配した底壁（５１）の上面に、上端が前記炉本体（４０）の上端と同じ高さ位置の内側壁（５２）と前記内側壁（５２）よりも高い中間壁（５３）と前記内側壁（５２）と同じ高さの外側壁（５４）を立設して断面凹状の凹部（５５）を二つ形成し、前記凹部（５５）にセラミック製のシール材（Ｓ）を充填した二重シール部材（５０）を周設するとともに、前記蓋本体（１０）の前記二重シール部材（５０）に対向する箇所に、水平方向に配した天壁（６１）の下面に、インナー壁（６２）とアウター壁（６３）を垂下設して前記インナー壁（６２）と前記アウター壁（６３）との間に断面逆凹状の溝部（６４）を一つ形成し、前記溝部（６４）にセラミック製のシール材（Ｓ）を充填した一重シール部材（６０）を周設し、前記蓋本体（１０）を閉じた状態で、前記二重シール部材（５０）の中間壁（５３）の先端部を、前記一重シール部材（６０）の溝部（６４）に充填したシール材（Ｓ）に埋入させるとともに、前記一重シール部材（６０）のインナー壁（６２）とアウター壁（６３）の先端部を、前記二重シール部材（５０）の凹部（５５）に充填したシール材（Ｓ）に埋入させたことを特徴とする。 In order to achieve the above-mentioned object, the ceiling lid structure for a vertical electric furnace according to claim 1 of the present invention combines a left furnace body (40a) and a right furnace body (40b) that can be divided into left and right parts. A ceiling lid structure in a two-part vertical electric furnace in which the ceiling opening (41) of the furnace body (40) is covered with a freely openable / closable lid body (10),
A plurality of receiving portions (11) are provided at predetermined intervals on the outer peripheral end portion of the lid main body (10), and a rod (31) is provided vertically on the outer peripheral surface upper portion of the furnace main body (40). And a cylinder (30) that extends and contracts, and a pivot (21) that is fixed to a substantially horizontal and rotatable spindle (21) or that is rotatably coupled to a spindle (21) that extends substantially horizontally, and the tip (20a) faces downward. The base end (23) is rotatably connected to the rod (31) of the cylinder (30) and is disposed at a position where it approaches and contacts the receiving part (11) by rotation, and is connected to the receiving part (11). Each corresponding link member (20) is provided, and by raising the rod (31) of the cylinder (30), the link member (20) is rotated, and the distal end portion of the link member (20) ( 20a) said lid The receiving part (11) of (10) is pressed downward, and the lid body (10) placed so as to cover the ceiling opening (41) of the furnace body (40) is attached to the furnace body (40). The upper end of the furnace body (40) is pressed strongly against the upper end, and the upper end is placed on the upper surface of the bottom wall (51) arranged in the horizontal direction and below the upper end of the furnace body (40). The inner wall (52) at the same height as the upper end of the furnace body (40), the intermediate wall (53) higher than the inner wall (52), and the outer wall (54) having the same height as the inner wall (52). ) Are formed to form two recesses (55) having a concave cross section, and a double seal member (50) filled with a ceramic sealing material (S) is provided around the recess (55). The lid body (10) is disposed in a horizontal direction at a location facing the double seal member (50). An inner wall (62) and an outer wall (63) are suspended from the lower surface of the wall (61), and a groove portion (64) having an inverted concave section is formed between the inner wall (62) and the outer wall (63). The double seal member is formed in a state where a single seal member (60) filled with a ceramic sealing material (S) is provided in the groove portion (64) and the lid body (10) is closed. The tip of the intermediate wall (53) of (50) is embedded in the sealing material (S) filled in the groove (64) of the single seal member (60) and the inner wall of the single seal member (60) (62) and the tip of the outer wall (63) are embedded in a sealing material (S) filled in the recess (55) of the double seal member (50) .

また、請求項２に記載の縦型電気炉の天井蓋構造は、前記左側炉体（４０ａ）及び右側炉体（４０ｂ）のそれぞれに、前記リンク部材（２０）を二つ並列状態で設けるとともに、前記二つのリンク部材（２０）の前記支軸（２１）同士を連結シャフト（２４）で連結し、一つのシリンダー（３０）で前記二つのリンク部材（２０）を同時に回転させることを特徴とする。 Further, in the ceiling lid structure of the vertical electric furnace according to claim 2, the link member (20) is provided in parallel in each of the left furnace body (40a) and the right furnace body (40b). The support shafts (21) of the two link members (20) are connected to each other by a connection shaft (24), and the two link members (20) are simultaneously rotated by a single cylinder (30). To do.

さらに、請求項３に記載の縦型電気炉の天井蓋構造は、炉本体（４０）の天井開口部（４１）を開閉自在の蓋本体（１０）で覆うようにした縦型電気炉における天井蓋構造であって、
前記蓋本体（１０）の外周端部には、複数の受部（１１）が所定間隔をおいて設けられるとともに、前記炉本体（４０）の外周面上部には、上下方向にロッド（３１）を伸縮させるシリンダー（３０）と、略水平に延び回転自在の支軸（２１）に固定されるか又は略水平に延びる支軸（２１）に回転自在に連結され、先端部（２０ａ）が下向き回転により前記受部（１１）に接近し当接する位置に配置されるとともに基端部（２３）が前記シリンダー（３０）のロッド（３１）に回転自在に連結され、前記受部（１１）にそれぞれ対応したリンク部材（２０）とが設けられ、前記シリンダー（３０）のロッド（３１）を上昇させることによって、前記リンク部材（２０）を回転させて、前記リンク部材（２０）の先端部（２０ａ）で前記蓋本体（１０）の受部（１１）を下方に押圧し、前記炉本体（４０）の天井開口部（４１）を覆うように載せられた前記蓋本体（１０）を、前記炉本体（４０）の上端に対して強く押し付けるようにし、しかも前記炉本体（４０）の上端部に、水平方向でかつ前記炉本体（４０）の上端よりも下方に配した底壁（５１）の上面に、上端が前記炉本体（４０）の上端と同じ高さ位置の内側壁（５２）と前記内側壁（５２）よりも高い中間壁（５３）と前記内側壁（５２）と同じ高さの外側壁（５４）を立設して断面凹状の凹部（５５）を二つ形成し、前記凹部（５５）にセラミック製のシール材（Ｓ）を充填した二重シール部材（５０）を周設するとともに、前記蓋本体（１０）の前記二重シール部材（５０）に対向する箇所に、水平方向に配した天壁（６１）の下面に、インナー壁（６２）とアウター壁（６３）を垂下設して前記インナー壁（６２）と前記アウター壁（６３）との間に断面逆凹状の溝部（６４）を一つ形成し、前記溝部（６４）にセラミック製のシール材（Ｓ）を充填した一重シール部材（６０）を周設し、前記蓋本体（１０）を閉じた状態で、前記二重シール部材（５０）の中間壁（５３）の先端部を、前記一重シール部材（６０）の溝部（６４）に充填したシール材（Ｓ）に埋入させるとともに、前記一重シール部材（６０）のインナー壁（６２）とアウター壁（６３）の先端部を、前記二重シール部材（５０）の凹部（５５）に充填したシール材（Ｓ）に埋入させたことを特徴とする。 Furthermore, the ceiling lid structure of the vertical electric furnace according to claim 3 is a ceiling in a vertical electric furnace in which the ceiling opening (41) of the furnace body (40) is covered with an openable / closable lid body (10). A lid structure,
A plurality of receiving portions (11) are provided at predetermined intervals on the outer peripheral end portion of the lid main body (10), and a rod (31) is provided vertically on the outer peripheral surface upper portion of the furnace main body (40). And a cylinder (30) that extends and contracts, and a pivot (21) that is fixed to a substantially horizontal and rotatable spindle (21) or that is rotatably coupled to a spindle (21) that extends substantially horizontally, and the tip (20a) faces downward. The base end (23) is rotatably connected to the rod (31) of the cylinder (30) and is disposed at a position where it approaches and contacts the receiving part (11) by rotation, and is connected to the receiving part (11). Each corresponding link member (20) is provided, and by raising the rod (31) of the cylinder (30), the link member (20) is rotated, and the distal end portion of the link member (20) ( 20a) said lid The receiving part (11) of (10) is pressed downward, and the lid body (10) placed so as to cover the ceiling opening (41) of the furnace body (40) is attached to the furnace body (40). The upper end of the furnace body (40) is pressed strongly against the upper end, and the upper end is placed on the upper surface of the bottom wall (51) arranged in the horizontal direction and below the upper end of the furnace body (40). The inner wall (52) at the same height as the upper end of the furnace body (40), the intermediate wall (53) higher than the inner wall (52), and the outer wall (54) having the same height as the inner wall (52). ) Are formed to form two recesses (55) having a concave cross section, and a double seal member (50) filled with a ceramic sealing material (S) is provided around the recess (55). The lid body (10) is disposed in a horizontal direction at a location facing the double seal member (50). An inner wall (62) and an outer wall (63) are suspended from the lower surface of the wall (61), and a groove portion (64) having an inverted concave section is formed between the inner wall (62) and the outer wall (63). The double seal member is formed in a state where a single seal member (60) filled with a ceramic sealing material (S) is provided in the groove portion (64) and the lid body (10) is closed. The tip of the intermediate wall (53) of (50) is embedded in the sealing material (S) filled in the groove (64) of the single seal member (60) and the inner wall of the single seal member (60) (62) and the tip of the outer wall (63) are embedded in a sealing material (S) filled in the recess (55) of the double seal member (50) .

なお、カッコ内の記号は、図面および後述する発明を実施するための最良の形態に記載された対応要素または対応事項を示す。 Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and the best mode for carrying out the invention described later.

本発明の縦型電気炉の天井蓋構造によれば、シリンダーのロッドを上昇させることによって、リンク部材を回転させて、その先端部で蓋本体に設けられた受部を下方に押圧し、蓋本体を炉本体の上端に強く押し付けるので、従来のように蓋本体の自重のみによって炉本体の天井開口部を閉じるものと比較して、より大きな力で閉じることができる。すなわち、蓋本体の自重に、蓋本体を炉本体側に押し付ける力が加わるので、蓋本体と炉本体間の密着性が高まり、これにより、炉本体内の温度低下を効果的に抑制することができる。
この天井蓋構造は、請求項１に係る発明のように、左右に分割可能な左側炉体と右側炉体を合体してなる炉本体の天井開口部を開閉自在の蓋本体で覆うようにした２分割式の縦型電気炉においても、請求項３に係る発明のように、特に分割されていないタイプの炉本体の天井開口部を開閉自在の蓋本体で覆う縦型電気炉にも適用することができるが、２分割式の縦型電気炉では左側炉体および右側炉体の合体時に隙間が生じないように特に注意が払われるので有効である。 According to the ceiling lid structure of the vertical electric furnace of the present invention, the link member is rotated by raising the rod of the cylinder, and the receiving portion provided on the lid body is pressed downward at the tip thereof, and the lid Since the main body is strongly pressed against the upper end of the furnace main body, it can be closed with a larger force compared to a conventional case in which the ceiling opening of the main body is closed only by its own weight. That is, since the force of pressing the lid body against the furnace body side is added to the dead weight of the lid body, the adhesion between the lid body and the furnace body is increased, thereby effectively suppressing the temperature drop in the furnace body. it can.
As in the invention according to claim 1, the ceiling lid structure is configured such that the ceiling opening of the furnace body formed by combining the left furnace body and the right furnace body, which can be divided into left and right parts, is covered with an openable / closable lid body. The two-divided vertical electric furnace is also applied to a vertical electric furnace in which the ceiling opening portion of the furnace main body that is not particularly divided is covered with an openable / closable lid main body as in the invention according to claim 3. However, in the case of a two-part vertical electric furnace, special attention is paid so as not to generate a gap when the left furnace body and the right furnace body are combined.

また、本発明の縦型電気炉の天井蓋構造によれば、２分割式の縦型電気炉において、左側炉体及び右側炉体のそれぞれにリンク部材を二つ並列状態で設け、すなわち左側炉体にリンク部材を二つ並列状態で設けかつ右側炉体にも別のリンク部材を二つ並列状態で設け、しかもこれら二つのリンク部材の回転する部位同士を連結シャフトで連結し、一つのシリンダーで二つのリンク部材を同時に回動させるので、シリンダーの数を削減することができる。これにより、構造の簡素化と、製造コストの軽減化を図ることができる。なお、二つのリンク部材の回転する部位同士とは、リンク部材が略水平に延び回転自在の支軸に固定される場合には例えば支軸同士であり、またリンク部材が略水平に延びる支軸に回転自在に連結される場合には、支軸周りに回転するリンク部材の部位同士を示す。 Further, according to the ceiling lid structure of the vertical electric furnace of the present invention, in the two-part vertical electric furnace, two link members are provided in parallel in each of the left furnace body and the right furnace body, that is, the left furnace Two link members are provided in parallel in the body, and two other link members are provided in the right furnace body in parallel, and the rotating parts of these two link members are connected by a connecting shaft to form one cylinder. Since the two link members are simultaneously rotated, the number of cylinders can be reduced. As a result, the structure can be simplified and the manufacturing cost can be reduced. Note that the rotating portions of the two link members are, for example, the support shafts when the link member extends approximately horizontally and is fixed to a rotatable support shaft, and the support shaft extends substantially horizontally. In the case of being rotatably connected to each other, portions of link members that rotate around the support shaft are shown.

さらに、本発明の縦型電気炉の天井蓋構造によれば、炉本体に二重シール部材を設けるとともに、蓋本体に一重シール部材を設け、蓋本体を閉じた状態で、二重シール部材の中間壁の先端部を、一重シール部材の溝部に充填したシール材に埋入させ、一重シール部材のインナー壁とアウター壁の先端部を、二重シール部材の凹部に充填したシール材に埋入させるので、単に炉本体の上端面に蓋本体を当接させる場合と比較して、両者間のシール性を大幅に高めることができる。これにより、炉本体内の温度低下を、さらに効果的に抑制することができる。また、炉本体側に一重シール部材を設けるとともに、蓋本体側に二重シール部材を設け、蓋本体を閉じるようにしても同様の効果が得られる。 Furthermore, according to the ceiling lid structure of the vertical electric furnace of the present invention, the double seal member is provided in the furnace body, the single seal member is provided in the lid body, and the double seal member is closed with the lid body closed. The tip of the intermediate wall is embedded in the seal material filled in the groove of the single seal member, and the tip of the inner wall and outer wall of the single seal member is embedded in the seal material filled in the recess of the double seal member Therefore, compared with the case where the lid main body is simply brought into contact with the upper end surface of the furnace main body, the sealing performance between the two can be greatly improved. Thereby, the temperature fall in a furnace main body can be suppressed more effectively. The same effect can be obtained by providing a single seal member on the furnace body side and a double seal member on the lid body side so as to close the lid body.

なお、このシール材はセラミック製であるため耐熱性に優れ、従って、長期間にわたって良好なシール性を得ることができる。 In addition, since this sealing material is made of ceramics, it has excellent heat resistance, and therefore good sealing properties can be obtained over a long period of time.

本発明の実施形態に係る縦型電気炉の天井蓋構造を示す平面図である。It is a top view which shows the ceiling cover structure of the vertical electric furnace which concerns on embodiment of this invention. 図１に示す天井蓋構造の要部を示す側面図である。It is a side view which shows the principal part of the ceiling cover structure shown in FIG. 図１のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of FIG. 図２のリンク部材を示す拡大右側面図である。It is an expansion right view which shows the link member of FIG. 図１の要部を示す拡大平面図である。It is an enlarged plan view which shows the principal part of FIG. ２分割式の縦型電気炉の構成概要を示す側面図である。It is a side view which shows the structure outline | summary of a 2-split type vertical electric furnace.

図１乃至図５を参照して、本発明の実施形態に係る縦型電気炉の天井蓋構造について説明する。図１は天井蓋構造を示す平面図であり、図２はその要部側面図である。また、図３は、図１のＡ−Ａ線拡大断面図、図４は、図２の拡大右側面図、図５は、図１の要部拡大平面図である。 With reference to FIG. 1 thru | or FIG. 5, the ceiling cover structure of the vertical electric furnace which concerns on embodiment of this invention is demonstrated. FIG. 1 is a plan view showing a ceiling lid structure, and FIG. 2 is a side view of an essential part thereof. 3 is an enlarged cross-sectional view taken along line AA of FIG. 1, FIG. 4 is an enlarged right side view of FIG. 2, and FIG. 5 is an enlarged plan view of the main part of FIG.

これは、炉本体４０を左側炉体４０ａと右側炉体４０ｂに分割した２分割式の縦型電気炉において、炉本体４０の天井開口部４１を開閉する天井蓋構造であって、主に蓋本体１０側に設けられた受部１１と炉本体４０側に設けられたリンク部材２０とシリンダー３０を備える。炉本体４０の分割及び合体は、図２に示すように、レール１３０上に載せられた左側炉体４０ａと右側炉体４０ｂを離間及び接近させることによって行われる。 This is a two-part vertical electric furnace in which the furnace body 40 is divided into a left furnace body 40a and a right furnace body 40b, and has a ceiling lid structure that opens and closes the ceiling opening 41 of the furnace body 40. The receiving part 11 provided in the main body 10 side, the link member 20 provided in the furnace main body 40 side, and the cylinder 30 are provided. As shown in FIG. 2, the furnace body 40 is divided and united by separating and approaching the left furnace body 40 a and the right furnace body 40 b placed on the rail 130.

蓋本体１０は、炉本体４０の天井開口部４１の全域を覆う大きさを有し、炉本体４０の形状に対応した平面略円形状である。蓋本体１０は、その上部に係止された２本のチェーン８１を電動モータＭの駆動よって巻くように構成された開閉装置８０によって、炉本体１００の上面から天井側に上昇させられたり、逆に下降させられたりする。開閉装置８０による下降制御で蓋本体１０は炉本体４０の上面に載せられ自重によって炉本体４０の天井開口部４１を覆って蓋本体１０と炉本体４０との隙間を閉じる。なお、ここに示した開閉装置８０は天井から吊り下げられたクレーンであり、蓋本体１０を昇降させるだけでなく、図１に示す二点鎖線のように、蓋本体１０を水平移動させる機能も有している。 The lid body 10 has a size that covers the entire area of the ceiling opening 41 of the furnace body 40, and has a substantially planar shape corresponding to the shape of the furnace body 40. The lid main body 10 is lifted from the upper surface of the furnace main body 100 to the ceiling side by an opening / closing device 80 configured to wind two chains 81 locked to the upper part thereof by driving the electric motor M, and vice versa. Or be lowered. The lid body 10 is placed on the upper surface of the furnace body 40 by the lowering control by the opening / closing device 80, covers the ceiling opening 41 of the furnace body 40 by its own weight, and closes the gap between the lid body 10 and the furnace body 40. The opening / closing device 80 shown here is a crane suspended from the ceiling, and not only raises and lowers the lid body 10, but also has a function of horizontally moving the lid body 10 as shown by a two-dot chain line shown in FIG. Have.

受部１１は、蓋本体１０の外周端部の８箇所（左側炉体４０ａ側に４箇所と右側炉体４０ｂ側に４箇所、計８箇所）から所定間隔をあけて外側に向けて突設されている。受部１１は板状のものを縦方向に配したものでありその上面には、図３に示すように、下側に向けて湾曲した円弧面１１ａが形成されていて、先端部に向けて先細り状になっている。受部１１の先端は、炉本体４０に蓋本体１０が載せられたときに炉本体４０の外周面よりもさらに外側に突出するように設けられている。 The receiving part 11 protrudes outward at predetermined intervals from eight places (four places on the left furnace body 40a side and four places on the right furnace body 40b side) on the outer peripheral end of the lid body 10. Has been. The receiving portion 11 is a plate-like member arranged in the vertical direction, and as shown in FIG. 3, a circular arc surface 11a curved downward is formed on the upper surface thereof, and toward the tip portion. Tapered. The tip of the receiving portion 11 is provided so as to protrude further outward than the outer peripheral surface of the furnace body 40 when the lid body 10 is placed on the furnace body 40.

リンク部材２０は、板状の上片部２２と同じく板状の下片部２３が側面視で略くの字状（あるいは略Ｌ字状）に固定されたものであり、その中間部には支軸２１が固定されている。支軸２１は、炉本体４０の外周面から突設した固定台１３に立設された２つの固定部材１２間に回転自在に取付けられている。支軸２１の取付け位置は、受部１１の先端直下よりやや外側とし、リンク部材２０を回転させた際に、下向き回転によりリンク部材２０の先端部２０ａが受部１１の円弧面１１ａに接近しそして上載（当接）するように配置している。
上片部２２は、支軸２１の両端部から二枚の板材Ｐを平行に立設し、その間にコロＷを回転自在に設けて先端部２０ａとしている。また、下片部２３は、支軸２１の中央部から一枚の板材Ｐを、上片部２２とほぼ９０度の角度で外側に突設して構成している。 The link member 20 is formed by fixing a plate-like lower piece portion 23 in the same manner as the plate-like upper piece portion 22 in a substantially square shape (or substantially L-shape) in a side view, The support shaft 21 is fixed. The support shaft 21 is rotatably mounted between two fixed members 12 that are erected on a fixed base 13 protruding from the outer peripheral surface of the furnace body 40. The mounting position of the support shaft 21 is set slightly outside from directly below the front end of the receiving portion 11. When the link member 20 is rotated, the front end portion 20 a of the link member 20 approaches the arcuate surface 11 a of the receiving portion 11 by downward rotation. And it arrange | positions so that it may mount (contact | abut).
The upper piece 22 has two plate members P standing in parallel from both end portions of the support shaft 21, and a roller W is rotatably provided between the plate members P to form a tip portion 20a. Further, the lower piece portion 23 is configured by projecting a single plate material P from the center portion of the support shaft 21 to the outside at an angle of approximately 90 degrees with the upper piece portion 22.

シリンダー３０は、リンク部材２０の下片部２３の直下に、ロッド３１を上に向けた起立姿勢で固定台１３に固定し、ロッド３１の先端部を、リンク部材２０の基端部２０ｂ（下片部２３の先端部）に回転自在に取付けている。 The cylinder 30 is fixed to the fixing base 13 in an upright posture with the rod 31 facing upward just below the lower piece portion 23 of the link member 20, and the distal end portion of the rod 31 is fixed to the base end portion 20 b (lower portion) of the link member 20. It is rotatably attached to the tip of the one part 23).

そして、蓋本体１０を炉本体４０の上端面に開閉装置８０を介して上載させた状態で、シリンダー３０のロッド３１を上昇させ、これによって、リンク部材２０をそれに固定された支軸２１とともに回転（図３において左回転）させ、リンク部材２０の先端部２０ａで蓋本体１０の受部１１（円弧面１１ａ）を下方に押圧する。
これにより、蓋本体１０を炉本体４０の上端に強く押し付けることができるので、炉本体４０内の温度低下を効果的に抑制することができる。 Then, the rod 31 of the cylinder 30 is raised in a state where the lid main body 10 is mounted on the upper end surface of the furnace main body 40 via the opening / closing device 80, thereby rotating the link member 20 together with the support shaft 21 fixed thereto. (Rotate counterclockwise in FIG. 3) and press the receiving portion 11 (arc surface 11 a) of the lid main body 10 downward with the tip portion 20 a of the link member 20.
Thereby, since the lid body 10 can be strongly pressed against the upper end of the furnace body 40, the temperature drop in the furnace body 40 can be effectively suppressed.

なお、本実施形態における縦型電気炉は、左側炉体４０ａの中間部分に、リンク部材２０を二つ並列状態で設けて、二つのリンク部材２０の回転する部位、ここでは支軸２１同士を連結シャフト２４で連結し、二つのリンク部材２０を一つのシリンダー３０で同時に回転させるようにするとともに、右側炉体４０ｂについても中間部分に、リンク部材２０を二つ並列状態で設けて、二つのリンク部材２０の支軸２１同士を連結シャフト２４で連結し、二つのリンク部材２０を一つのシリンダー３０で同時に回転するようにしている。これにより、シリンダー３０および下片部２３の数を削減することができるので、構造の簡素化と、製造コストの軽減化を図ることができる。
また、左側炉体４０ａと右側炉体４０ｂのそれぞれの両端部には、リンク部材２０とシリンダー３０を設け、各リンク部材２０を専用のシリンダー３０で駆動するようにしている。 In the vertical electric furnace in the present embodiment, two link members 20 are provided in an intermediate portion of the left furnace body 40a in a parallel state, and the portions where the two link members 20 rotate, here, the support shafts 21 are arranged. The two connecting members 20 are connected to each other by the connecting shaft 24 so that the two link members 20 are simultaneously rotated by one cylinder 30, and two link members 20 are provided in parallel in the middle portion of the right furnace body 40 b. The support shafts 21 of the link member 20 are connected to each other by a connection shaft 24, and the two link members 20 are simultaneously rotated by a single cylinder 30. Thereby, since the number of the cylinders 30 and the lower piece part 23 can be reduced, simplification of a structure and reduction of manufacturing cost can be aimed at.
Further, link members 20 and cylinders 30 are provided at both ends of the left furnace body 40a and the right furnace body 40b, and each link member 20 is driven by a dedicated cylinder 30.

さらに、本実施形態に係る天井蓋構造は、二重シール部材５０と一重シール部材６０を、それぞれ炉本体４０と蓋本体１０の全周にわたって設けている。二重シール部材５０は、炉本体４０の内周面上端部に水平方向に配した底壁５１の上面に、内側壁５２と中間壁５３と外側壁５４を立設して断面凹状の凹部５５を、炉本体４０の径方向に並べて二つ形成し、この凹部５５にセラミック製のシール材Ｓを充填して構成している。
また、一重シール部材６０は、蓋本体１０の下面の二重シール部材５０に対向する箇所に、水平方向に配した天壁６１の下面に、インナー壁６２とアウター壁６３を垂下設して断面逆凹状の溝部６４を一つ形成し、この溝部６４にセラミック製のシール材Ｓを充填して構成している。 Furthermore, the ceiling lid structure according to the present embodiment is provided with the double seal member 50 and the single seal member 60 over the entire circumferences of the furnace body 40 and the lid body 10, respectively. The double seal member 50 is provided with an inner wall 52, an intermediate wall 53, and an outer wall 54 erected on the upper surface of a bottom wall 51 disposed in the horizontal direction at the upper end of the inner peripheral surface of the furnace body 40. Are arranged side by side in the radial direction of the furnace body 40, and the recess 55 is filled with a ceramic sealing material S.
The single seal member 60 has a cross section in which an inner wall 62 and an outer wall 63 are suspended from the lower surface of the top wall 61 disposed in the horizontal direction at a position facing the double seal member 50 on the lower surface of the lid body 10. One reverse concave groove 64 is formed, and the groove 64 is filled with a ceramic sealing material S.

そして、蓋本体を閉じた状態で、二重シール部材５０の中間壁５３の先端部を、一重シール部材６０の溝部６４に充填したシール材Ｓに埋入させている。また、一重シール部材６０のインナー壁６２とアウター壁６３の先端部を、二重シール部材５０の二つの凹部５５に充填したシール材Ｓに、それぞれ埋入させている。なお、中間壁５３およびインナー壁６２とアウター壁６３のシール材Ｓに対する埋入深さは、適宜設定することができる。 And the front-end | tip part of the intermediate | middle wall 53 of the double seal member 50 is embedded in the sealing material S with which the groove part 64 of the single seal member 60 was filled in the state which closed the cover main body. Further, the tip portions of the inner wall 62 and the outer wall 63 of the single seal member 60 are respectively embedded in the seal material S filled in the two concave portions 55 of the double seal member 50. In addition, the embedding depth with respect to the sealing material S of the intermediate | middle wall 53, the inner wall 62, and the outer wall 63 can be set suitably.

これにより、炉本体４０と蓋本体１０の間のシール性を大幅に高めることができるので、炉本体４０内の温度低下をさらに効果的に抑制することができる。また、シール材Ｓはセラミック製であるため耐熱性に優れ、長期間にわたって良好なシール性を発揮することができる。 Thereby, since the sealing performance between the furnace main body 40 and the lid main body 10 can be greatly improved, the temperature drop in the furnace main body 40 can be further effectively suppressed. Further, since the sealing material S is made of ceramic, it has excellent heat resistance and can exhibit good sealing properties over a long period of time.

なお、二重シール部材５０と一重シール部材６０の取付位置を逆にしてもよい。すなわち、炉本体４０の上端部に、水平方向に配した底壁の上面に、インナー壁とアウター壁を立設して断面凹状の凹部を一つ形成し、凹部にセラミック製のシール材を充填した一重シール部材を周設するとともに、蓋本体１０の一重シール部材に対向する箇所に、水平方向に配した天壁の下面に、内側壁と中間壁と外側壁を垂下設して断面逆凹状の溝部を二つ形成し、溝部にセラミック製のシール材を充填した二重シール部材を周設し、蓋本体１０を閉じた状態で、二重シール部材の中間壁の先端部を、一重シール部材の凹部に充填したシール材に埋入させるとともに、一重シール部材のインナー壁とアウター壁の先端部を、二重シール部材の溝部に充填したシール材に埋入させることもできる。 Note that the mounting positions of the double seal member 50 and the single seal member 60 may be reversed. That is, the inner wall and the outer wall are erected on the upper surface of the bottom wall arranged in the horizontal direction at the upper end of the furnace body 40 to form one recess having a concave section, and the recess is filled with a ceramic sealing material. The single-sided seal member is provided in a circle, and the inner wall, the intermediate wall, and the outer wall are suspended from the lower surface of the top wall arranged in the horizontal direction at a position facing the single-sided seal member of the lid body 10 so that the cross section is reversely concave. Are formed, and a double seal member filled with a ceramic sealing material is provided around the groove, and the front end of the intermediate wall of the double seal member is single sealed with the lid body 10 closed. While embedding in the sealing material with which the recessed part of the member was filled, the front-end | tip part of the inner wall and outer wall of a single sealing member can also be embedded in the sealing material with which the groove part of the double sealing member was filled.

また本発明の実施形態では、リンク部材２０と支軸２１を一体的に回転するようにしたが、支軸２１については回転しないように固定部材１２に固定し、その支軸２１の周りに回転自在にリンク部材２０を連結するようにしてもよい。
また、左側炉体４０ａおよび右側炉体４０ｂの中間部分にそれぞれリンク部材２０を二つ並列状態で設けて、二つのリンク部材２０の支軸２１同士を連結シャフト２４で連結して、二つのリンク部材２０を一つのシリンダー３０で同時に回転させるようにしたが、連結シャフト２４で連結する部位は支軸２１に限られるものではなく、二つのリンク部材２０の回転する部位、例えば、二つのリンク部材２０の上片部２２同士や下片部２３同士を連結するようにしてもよい。 In the embodiment of the present invention, the link member 20 and the support shaft 21 are integrally rotated. However, the support shaft 21 is fixed to the fixing member 12 so as not to rotate, and is rotated around the support shaft 21. You may make it connect the link member 20 freely.
In addition, two link members 20 are provided in an intermediate portion between the left furnace body 40a and the right furnace body 40b, respectively, and the support shafts 21 of the two link members 20 are connected to each other by a connecting shaft 24, whereby two links are provided. The member 20 is rotated simultaneously by one cylinder 30, but the portion to be connected by the connecting shaft 24 is not limited to the support shaft 21, but the portion where the two link members 20 rotate, for example, two link members You may make it connect 20 upper piece parts 22 and lower piece parts 23.

１０蓋本体
１１受部
１１ａ円弧面
１２固定部材
１３固定台
２０リンク部材
２０ａ先端部
２０ｂ基端部
２１支軸
２２上片部
２３下片部
２４連結シャフト
３０シリンダー
３１ロッド
４０炉本体
４０ａ左側炉体
４０ｂ右側炉体
４１天井開口部
５０二重シール部材
５１底壁
５２内側壁
５３中間壁
５４外側壁
５５凹部
６０一重シール部材
６１天壁
６２インナー壁
６３アウター壁
６４溝部
８０開閉装置
８１チェーン
１００炉本体
１００ａ左側炉体
１００ｂ右側炉体
１１０蓋本体
１２０開閉装置
１２１チェーン
１３０レール
Ｍ電動モータ
Ｐ板材
Ｓシール材
Ｗコロ DESCRIPTION OF SYMBOLS 10 Lid body 11 Receiving part 11a Arc surface 12 Fixing member 13 Fixing base 20 Link member 20a Tip part 20b Base end part 21 Support shaft 22 Upper piece part 23 Lower piece part 24 Connection shaft 30 Cylinder 31 Rod 40 Furnace body 40a Left side furnace body 40b Right side furnace body 41 Ceiling opening 50 Double seal member 51 Bottom wall 52 Inner wall 53 Intermediate wall 54 Outer wall 55 Recessed portion 60 Single seal member 61 Top wall 62 Inner wall 63 Outer wall 64 Groove 80 Opening / closing device 81 Chain 100 Furnace body 100a Left furnace body 100b Right furnace body 110 Lid body 120 Opening / closing device 121 Chain 130 Rail M Electric motor P Plate material S Seal material W Roller

Claims

A ceiling lid structure in a two-part vertical electric furnace in which a ceiling opening of a furnace body formed by combining a left furnace body and a right furnace body, which can be divided into left and right, is covered with an openable / closable lid body,
A plurality of receiving portions are provided at predetermined intervals on the outer peripheral end of the lid body,
In the upper part of the outer peripheral surface of the furnace body,
A cylinder that expands and contracts the rod in the vertical direction;
It is fixed to a support shaft that extends substantially horizontally or is rotatably connected to a support shaft that extends substantially horizontally, and a distal end portion is disposed at a position where it approaches and contacts the receiving portion by a downward rotation and a proximal end A portion is rotatably connected to the rod of the cylinder, and a link member corresponding to each of the receiving portions is provided,
By raising the rod of the cylinder, the link member is rotated, the receiving part of the lid body is pressed downward at the tip of the link member, and the ceiling opening of the furnace body is covered. The lid body is strongly pressed against the upper end of the furnace body ,
Moreover, on the upper end of the furnace body, on the upper surface of the bottom wall disposed in the horizontal direction and below the upper end of the furnace body, the upper end is from the inner wall and the inner wall at the same height as the upper end of the furnace body. And an outer wall having the same height as the inner wall and the inner wall are erected to form two recesses having a concave cross section, and a double seal member filled with a ceramic sealing material is provided around the recess. ,
An inner wall and an outer wall are suspended from the bottom surface of the top wall arranged in the horizontal direction at a location facing the double seal member of the lid body, and the cross section is reversely concave between the inner wall and the outer wall. One groove portion is formed, and a single seal member filled with a ceramic sealing material is provided around the groove portion,
With the lid body closed, the tip of the intermediate wall of the double seal member is embedded in the seal material filled in the groove of the single seal member, and the inner wall and the outer wall of the single seal member are embedded. A ceiling lid structure for a vertical electric furnace, characterized in that a front end portion is embedded in a sealing material filled in a concave portion of the double sealing member .

In each of the left furnace body and the right furnace body, two link members are provided in a parallel state, the support shafts of the two link members are connected by a connecting shaft, and the two link members are connected by one cylinder. The vertical lid of the vertical electric furnace according to claim 1, wherein the two are simultaneously rotated.

A ceiling lid structure in a vertical electric furnace in which the ceiling opening of the furnace body is covered with an openable / closable lid body,
A plurality of receiving portions are provided at predetermined intervals on the outer peripheral end of the lid body,
In the upper part of the outer peripheral surface of the furnace body,
A cylinder that expands and contracts the rod in the vertical direction;
It is fixed to a support shaft that extends substantially horizontally or is rotatably connected to a support shaft that extends substantially horizontally, and a distal end portion is disposed at a position where it approaches and contacts the receiving portion by a downward rotation and a proximal end A portion is rotatably connected to the rod of the cylinder, and a link member corresponding to each of the receiving portions is provided,
By raising the rod of the cylinder, the link member is rotated, the receiving part of the lid body is pressed downward at the tip of the link member, and the ceiling opening of the furnace body is covered. The lid body is strongly pressed against the upper end of the furnace body ,
Moreover, on the upper end of the furnace body, on the upper surface of the bottom wall disposed in the horizontal direction and below the upper end of the furnace body, the upper end is from the inner wall and the inner wall at the same height as the upper end of the furnace body. And an outer wall having the same height as the inner wall and the inner wall are erected to form two recesses having a concave cross section, and a double seal member filled with a ceramic sealing material is provided around the recess. ,
An inner wall and an outer wall are suspended from the lower surface of the top wall arranged in the horizontal direction at a location facing the double seal member of the lid body, and the cross section is reversely concave between the inner wall and the outer wall. One groove portion is formed, and a single seal member filled with a ceramic sealing material is provided around the groove portion,
With the lid body closed, the tip of the intermediate wall of the double seal member is embedded in the seal material filled in the groove of the single seal member, and the inner wall and the outer wall of the single seal member are embedded. A ceiling lid structure for a vertical electric furnace, characterized in that a front end portion is embedded in a sealing material filled in a concave portion of the double sealing member .