201144449 : 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明通常涉及一種用於冶金設備的熱風控制閥，所述 熱風控制闕具體地用於控制鼓風爐的熱風流。 【先前彳支術】 [0002] 在鼓風爐中，熱空氣（通常稱為熱風（hot blast)) 被注入爐中以輔助爐中礦石的還原（reduction。 [0003] 空氣在作為熱風傳送給爐之前被加熱至l25〇°c。還原氣 體或熱空氣可以混合入熱風中，以進一步辅助爐中礦石 的還原。用於控制熱風流的任何閥暴露於氣體溫度非常 高並且還可具有極大侵蚀性的極端環境中。 [0004] 100108692 已知的疋’在熱風的傳送管道中佈置蝶形閥以控制流向 爐的熱風流。從JP 09095720中可獲知這種蝶形閥，這 種蝶形閥包括安裝在佈置於熱風路徑中的中央位置的旋 轉軸線上的盤狀控制件。在關閉位置，盤狀控制件垂直 於熱風流並且基本上阻擋熱風的㈣。_控制件⑽ 表單編號A0101 轉90。進入打開位置，其中控制件基本上平行於熱風流， 從而熱風可流過閥。實u風在控制件的兩側流過 。這種蝶形_缺陷在於’由於旋轉轴線佈置於管道的 中央，即使當㈣件處於全開位置時控制件健、在教風 路徑中。實際上’即使控制件的流動限制在打開位置被 降低至最小’控制件仍然呈現出阻播熱風穿過閥的自由 流動。此外，由於控制件暴露于極高的溫度，因此提供 用於冷卻餘㈣件的冷卻觀。但是，㈣冷卻經常 不足以防止對控制件的破壞。結果，在一段時間後需要 第4頁/共21頁 201144449 替換控制件。但是，由於只有控制閥已經被拆卸並且從 管道中取出時才唯一可能接近控制件，因此替換控制件 尤其困難。從而維修時間和成本相當高。 [0005] ❹ [0006] [0007] ο 如上所述，蝶型熱風控制閥的可靠性和耐久性由於暴露 於這種極端環境而受到損害。這種控制閥不僅具有在熱 風路徑中形成阻擋的缺陷，而且要求高製造成本以及密 集、頻繁且高成本的維修操作。從而有必要提供一種較 好實施的熱風控制閥，優選地降低涉及的成本。 【發明内容】 本發明的目的在於提供一種沒有上述缺陷的改進的熱風 控制閥。通過權利要求1中所要求的熱風控制閥來實現此 目的。 本發明提出一種用於冶金設備的熱風控制閥，該熱風控 制閥具體地用於控制鼓風爐的熱風流。熱風控制閥包括 :金屬閥殼，具有其中限定有氣體通道的耐火爐襯；以 及閥件，可旋轉地佈置於氣體通道中，以通過所述閥件 圍繞旋轉軸線在打開位置與關閉位置之間的旋轉而能夠 改變氣體通道中的自由通路。閥件具有圍繞旋轉軸線旋 轉對稱的殼體，以及具有在橫向於閥件的旋轉軸線的方 向佈置於閥件中的貫穿通道。貫穿通道的橫截面與氣體 通道的橫截面基本相同。進一步，貫穿通道佈置於閥件 中，以便當閥件在打開位置時貫穿通道與氣體通道對齊 〇 根據本發明的一個重要方面，閥件包括具有第一基座和 相對的第二基座的圓柱體部分；第一基座設置有用於將 100108692 表單編號Α0101 第5頁/共21頁 1003157581-0 [0008] 201144449 閥件連接至軸的連接裝置；圓柱體部分的直徑大於氣體 通道的直徑。閥件進一步包括半球體部分，該半球體具 有佈置於圓柱體部分的第二基座上的基座。 [0009] [0010] [0011] [0012] [0013] [0014] 100108692 這樣的熱風控制閥具有的優點是：當控制件在打開位置 時，熱風能自由地流過控制件的貫穿通道。實際上，控 制件沒有構成對熱風流的阻擋。當蝶型控制閥處於打開 位置時產生達到20%的壓力降，與此相反，穿過根據本發 明的打開的控制閥的壓力降是微不足道的。此外，在它 們的關閉位置，蝶型控制閥通常呈現相當大的洩露（達 到40/〇 °由於根據本發明的熱風控制閥的特殊形狀（圓 柱體部分和半球體部分）’能夠極大地減少這種洩露。 從而熱風流的改進控制成為可能。 優選地，氣體通道與貫穿通道具有圓形橫裁面，並且貫 穿通道的直桎基本對應於氣體通道的直徑。 有利地，貫穿通道的轴線垂直於閥件的旋轉軸線。 優選地，半球體部分的基座的直徑對應於圓柱體部分的 第二基座的直徑。 有利地，半球體部分的基座被佈置為位於氣體通道的軸 線上。 根據本發明的重要方面，優選地，連接裝置包括位於圓 柱體部分的第一基座上的連接墊座（sh〇e)，連接墊座 形成其中具有接合法蘭的圓周溝槽，接合法蘭面向圓柱 體部分的第一基座。接合法蘭可以平行於圓柱體部分的 第一基座。然而，優選地，接合法蘭以一定角度朝向第 表單編號A0101 第6頁/共21頁 1003157581-0 201144449 [0015] [0016] Ο [0017] [0018]201144449: VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention generally relates to a hot air control valve for a metallurgical apparatus, the hot air control unit being specifically used for controlling the hot air flow of the blast furnace. [Previous sacral surgery] [0002] In blast furnaces, hot air (commonly known as hot blast) is injected into the furnace to assist in the reduction of ore in the furnace. [0003] Air is sent to the furnace as hot air before it is sent to the furnace. It is heated to 15 ° C. The reducing gas or hot air can be mixed into the hot air to further assist in the reduction of the ore in the furnace. Any valve used to control the hot air flow is exposed to very high temperatures and can be extremely aggressive. In the extreme environment [0004] 100108692 A known butterfly is arranged in a hot air conveying duct to control the flow of hot air to the furnace. Such a butterfly valve is known from JP 09095720, and the butterfly valve includes installation. a disk-shaped control member on a rotational axis disposed at a central position in the hot air path. In the closed position, the disk-shaped control member is perpendicular to the hot air flow and substantially blocks the hot air (four)._Control member (10) Form No. A0101 turns 90. Enter The open position, wherein the control member is substantially parallel to the hot air flow, so that hot air can flow through the valve. The real u wind flows on both sides of the control member. The wire is arranged in the center of the pipe, even when the (four) piece is in the fully open position, the control member is in the wind direction. In fact, even if the flow restriction of the control member is reduced to the minimum in the open position, the control member still exhibits a hot air resistance. Free flow through the valve. Furthermore, since the control member is exposed to extremely high temperatures, a cooling view for cooling the remaining (four) pieces is provided. However, (4) cooling is often insufficient to prevent damage to the control member. It is necessary to replace the control piece after the 4th/21st page 201144449. However, it is especially difficult to replace the control piece because only the control valve has been disassembled and removed from the pipe, so the maintenance time and cost are quite high. [0005] [0006] As described above, the reliability and durability of the butterfly hot air control valve are impaired by exposure to such extreme environments. This control valve not only forms a barrier in the hot air path. Defects, but also require high manufacturing costs and intensive, frequent and costly maintenance operations. It is therefore necessary to provide a better The hot air control valve is preferably reduced in cost. SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved hot air control valve that does not suffer from the above-mentioned drawbacks. This object is achieved by the hot air control valve as claimed in claim 1. The present invention provides a hot air control valve for a metallurgical plant, the hot air control valve being specifically for controlling a hot air flow of a blast furnace. The hot air control valve includes: a metal valve casing having a refractory lining defining a gas passage therein; and a valve member, Rotatablely disposed in the gas passage to change a free passage in the gas passage by rotation of the valve member about an axis of rotation between an open position and a closed position. The valve member has a housing that is rotationally symmetric about the axis of rotation, And a through passage arranged in the valve member in a direction transverse to the axis of rotation of the valve member. The cross section of the through passage is substantially the same as the cross section of the gas passage. Further, the through passage is disposed in the valve member such that the through passage is aligned with the gas passage when the valve member is in the open position. According to an important aspect of the invention, the valve member includes a cylinder having a first base and an opposite second base a body portion; the first base is provided with a connecting device for connecting the 100108692 form number Α0101, page 5/21 page 1003157581-0 [0008] 201144449 valve member to the shaft; the diameter of the cylindrical portion is larger than the diameter of the gas passage. The valve member further includes a hemispherical portion having a base disposed on the second base of the cylindrical portion. [0012] [0014] [0014] Such a hot air control valve has the advantage that hot air can flow freely through the through passage of the control member when the control member is in the open position. In fact, the control does not constitute a blockage of hot air flow. A pressure drop of up to 20% is produced when the butterfly control valve is in the open position, whereas the pressure drop across the open control valve according to the present invention is negligible. Furthermore, in their closed position, the butterfly control valve typically exhibits a considerable leakage (up to 40/〇° due to the special shape of the hot air control valve according to the invention (cylinder portion and hemispherical portion)' can greatly reduce this Thus, improved control of the hot air flow is possible. Preferably, the gas passage and the through passage have a circular cross section, and the straight traverse of the through passage substantially corresponds to the diameter of the gas passage. Advantageously, the axis of the through passage is vertical The axis of rotation of the valve member. Preferably, the diameter of the base of the hemispherical portion corresponds to the diameter of the second base of the cylindrical portion. Advantageously, the base of the hemispherical portion is arranged to lie on the axis of the gas passage. According to an important aspect of the invention, preferably, the connecting means comprises a connecting pedestal on the first base of the cylindrical portion, the connecting pedestal forming a circumferential groove having a joint flange therein, the joint flange a first base facing the cylindrical portion. The joint flange may be parallel to the first base of the cylindrical portion. However, preferably, the joint flange At an angle toward the first sheet A0101 Page number 6 / of 21 1003157581-0 201144449 [0015] [0016] Ο [0017] [0018]
[0019] [0020] 一基座的外周遠離第一基座逐漸變細。 根據本發明的實施方式，軸包括與連接墊座中的圓周溝 槽相接合的夾緊裝置，夾緊裝置以軸的夾緊裝置的旋轉 運動傳遞給閥件的方式，使得夾緊裝置的接觸表面與連 接塾座的接合法蘭緊密接觸。優選地，耐火隔熱紙（refractory insulation paper) 佈置於夾緊裝置的接 觸表面與連接墊座的接合法蘭之間。 有利地，夾緊裝置包括與圓周溝槽相接合的至少兩個夾 緊元件，夾緊元件連接至軸的擴大頭部。優選地，夾緊 裝置還包括與至少兩個夾緊元件相接合的固定環，從而 避免夾緊元件沿著徑向遠離連接墊座的方向移動。 至少兩個夾緊元件能通過螺釘連接至擴大頭部；螺釘優 選地設置有用於將夾緊元件拉向擴大頭部的彈簧裝置， 螺釘優選地設置有用於限定螺釘運動的套管。 為了冷卻軸和連接裝置，有利地，軸設置有用於將冷卻 液傳送給軸的擴大頭部的冷卻通道。 在至少兩個夾緊元件與軸的擴大頭部之間可佈置有中間 板。該中間板可設置有輔助軸，所述輔助軸接合在匹配 凹槽中，所述匹配凹槽佈置於閥件的連接墊座中以產生 形狀匹配連接（form-fit connection)。這種佈置可 用于確保，萬一接觸表面與接合法蘭之間的摩擦連接失 敗時，閥件由輔助軸提供的形狀匹配連接來驅動（entrained) ° 夾緊元件和/或固定環和/或中間板和/或輔助軸由耐熱鋼 100108692 表單編號A0101 第7頁/共21頁 1003157581-0 201144449 製成。熱絕緣材料佈置於夾緊裝置的各種元件之間的間 隙中。有利地，閥件由耐火材料或陶瓷材料形成為一體 件。 [0021] 優選地，金屬閥殼包括用於通過軸操作閥件的橫向開口 :橫向開口的直徑至少略微大於閥件的圓柱體部分的直 徑。出於維修目的，這種橫向開口允許從閥殼中輕易地 取出閥件。為了接近要檢修的閥件，沒有必要去除閥殼 〇 [0022] 優選地，用於軸的任一軸承安放於金屬閥殼的外側，從 而軸承不遭受金屬閥殼中極其嚴酷的環境。因此軸承的 使用壽命延長。 [0023] 閥件的第一基座的圓周區域中佈置有環形溝槽，環形薄 板與環形溝槽接合以形成曲徑環式密封（labyrinth seal)。這種曲徑環式密封可以防止大量熱風進入連接 裝置並移向主密封裝置。從而延長了主密封裝置的使用 壽命。 【實施方式】 [0024] 圖1示意性地示出用於安裝在熱風管道中的熱風控制閥。 熱風控制閥10包括具有入口端14和出口端16的金屬閥殼 12，入口端和出口端中的每個都包括用於連接至管道（ 未示出）的連接法蘭18。在内部，閥殼12包括耐熱爐襯 20，耐熱爐襯中限定有用於將熱風從入口端14傳送到出 口端16的氣體通道22。 100108692 閥件24可旋轉地設置在氣體通道22中，以通過閥件24在 表單編號A0101 第8頁/共21頁 100315758卜0 [0025] 201144449 [0026] 〇 [0027] [0028] Ο [0029] 開口位置與出口位置之間圍繞旋轉轴線26的旋轉而改變 氣體通道中的自由通路。閥件24具有圍繞旋轉軸線26旋 轉對稱的殼體。後面將更仔細地描述閥件24的殼體。 閥件24包括貫穿通道28，貫穿通道的橫截面基本與氣體 通道22的橫戴面相同。貫穿通道28被佈置成，當閥件24 處於如圖1中所示打開位置時，貫穿通道28與氣體通道22 對齊並形成氣體通道22的連續部分，以使得熱風能自由 地從熱風控制閥10的入口端14流向出口端16。 閥件24包括具有第一基座32的圓柱體部分30，該第一基 座具有用於將閥件24連接至軸36的連接墊座34。後面參 照圖2時將更為仔細地描述轴36與閥件24之間的連接。 閥殼12設置有橫向開口 38，以允許軸36從閥殼外側伸入 閥殼中並連接至閥件24。橫向開口 38的尺寸設置成允許 通過該橫向開口從閥殼12中取出閥件24。從而可以容易 且快速地維修和替換閥件24。不必為了接近閥件24在連 接法蘭18處將熱風控制閥1〇從管道拆開。通過將軸支承 元件40連接至連接法蘭42，包括闕件24和軸36的組件被 保持在適當位置。 其中，軸支承組件40包括軸轴承（shaft bearing) 44 以及主密封裝置46(優選地，為填料盒形式）。應該注 意到，這些元件都佈置於閥殼12的外側，即，遠離閥殼 12中的侵蝕環境。 現在參照圖2，更仔細地描述軸36與閥件24之間的連接。 在第一基座32的中央部上’閥件24包括形成有圓周溝槽 100108692 表單編號A0101 第9頁/共21頁 1003157581-0 [0030] 201144449 ’該圓周溝槽5G中具有傾斜接合法蘭52 轴36包括與圓周溝槽5〇相接合的夹緊裝置。夾緊裝置 由至少兩個夾緊元件54形成，所述至少兩個夾緊元件具 有與圓周溝槽50相接合的突出部56。夾緊元件54的突出 邛56的橫截面基本對應於連接墊座34的溝槽50的橫截面 大出部56的接觸表面58與連接墊座34的接合法蘭52緊 饮接觸’以使得夾緊元件54 (旋轉地固定至軸36)的旋 轉運動通過接觸表面58和接合法蘭52傳遞給閥件24。耐 火隔熱紙60可失在接觸表面μ與接合法蘭52之間，以進 一步改進從軸36傳輪至閥件24的力。 [0031] [0032] [0033] 通過與佈置於夾緊元件54中的圓周凹槽64相接合的固定 環62，防止所述至少兩個夾緊元件54徑向外移。 失緊tl件54通過螺釘68連接至轴36的擴大頭部66。螺釘 68將失緊元件54拉向擴大頭部66。這樣做，螺釘68也將 接觸表面58拉緊抵靠在接合法蘭52上，以確保夾緊元件 54與閥件24的連接墊座34良好接觸。擴大頭部66可以與 軸36形成為一體件。但是，優選地，擴大頭部66單獨形 成並通過焊接固定至軸36。 失緊元件54與擴大頭部66之間還佈置有中間板7〇。與轴 36的旋轉轴線26對齊的輔助軸（例如設置於中間板7〇上 的多邊形轴72)以及閥件24的連接墊座34中的相應多邊 形凹槽74 ’提供了中間板70與閥件24之間的形狀匹配連 接。萬一接觸表面58與接合法蘭52之間的摩擦連接失敗 ’則閱件24的驅動可以借助於多邊形軸72提供的形狀匹 配連接來實現。 100108692 表單編號A0101 第10頁/共21頁 1003157581-0 201144449 [0034] 在擴大頭部66與中間板70中，優選地，螺釘68被引導穿 過套管76 ’套管接觸夾緊元件54並由此限制螺釘68的運 動（travel)。套管76防止螺釘68過緊並且防止由於過 緊而潛在危害夾緊元件54或連接墊座34。優選地，螺釘 還設置有在中間板70與螺帽80之間的預拉伸（pretensioned) 彈簧裝置78 。 彈 簧裝置78 ( 可以是盤彈簧的形 式）確保接觸區域（接合法蘭52和接觸表面）上的載荷 被限定成預定張力（predetermined tension)。實際 上’由於溫度的變化，接觸區域上的載荷是可變化的。[0020] The outer circumference of a pedestal tapers away from the first pedestal. According to an embodiment of the invention, the shaft comprises a clamping device that engages a circumferential groove in the connection pedestal, the clamping device being transmitted to the valve member by the rotational movement of the clamping device of the shaft such that the contact of the clamping device The surface is in intimate contact with the joint flange of the connecting jaw. Preferably, refractory insulation paper is disposed between the contact surface of the clamping device and the joint flange of the connection shoe. Advantageously, the clamping device comprises at least two clamping elements that engage the circumferential grooves, the clamping elements being coupled to the enlarged head of the shaft. Preferably, the clamping device further includes a retaining ring that engages the at least two gripping elements to prevent the gripping member from moving in a direction away from the connecting pedestal. At least two clamping elements can be screwed to the enlarged head; the screw is preferably provided with spring means for pulling the clamping element towards the enlarged head, the screw preferably being provided with a sleeve for defining the movement of the screw. In order to cool the shaft and the connecting device, advantageously the shaft is provided with a cooling passage for conveying the cooling liquid to the enlarged head of the shaft. An intermediate plate may be disposed between the at least two clamping elements and the enlarged head of the shaft. The intermediate plate may be provided with an auxiliary shaft that engages in a mating recess that is disposed in the connecting shoe of the valve member to create a form-fit connection. This arrangement can be used to ensure that the valve member is entrained by the shape-matching connection provided by the auxiliary shaft in the event of a failure of the frictional connection between the contact surface and the joint flange, the clamping element and/or the retaining ring and/or The intermediate plate and/or the auxiliary shaft are made of heat-resistant steel 100108692 Form No. A0101 Page 7 of 21 pages 1003157581-0 201144449. The thermally insulating material is disposed in the gap between the various components of the clamping device. Advantageously, the valve member is formed as a single piece from a refractory or ceramic material. [0021] Preferably, the metal valve housing includes a lateral opening for operating the valve member through the shaft: the diameter of the lateral opening is at least slightly larger than the diameter of the cylindrical portion of the valve member. This lateral opening allows for easy removal of the valve member from the valve housing for maintenance purposes. In order to access the valve member to be repaired, it is not necessary to remove the valve casing. [0022] Preferably, any bearing for the shaft is placed outside the metal valve casing so that the bearing does not suffer from the extremely harsh environment of the metal valve casing. Therefore, the service life of the bearing is extended. [0023] An annular groove is disposed in a circumferential region of the first base of the valve member, the annular plate engaging the annular groove to form a labyrinth seal. This labyrinth seal prevents large amounts of hot air from entering the connection and moving toward the main seal. This extends the life of the primary seal. [Embodiment] [0024] FIG. 1 schematically shows a hot air control valve for installation in a hot air duct. Hot air control valve 10 includes a metal valve housing 12 having an inlet end 14 and an outlet end 16, each of which includes a connecting flange 18 for connection to a conduit (not shown). Internally, the valve housing 12 includes a heat resistant lining 20 defining a gas passage 22 therein for conveying hot air from the inlet end 14 to the outlet end 16. 100108692 The valve member 24 is rotatably disposed in the gas passage 22 to pass through the valve member 24 in the form number A0101. Page 8 of 21 page 100315758. [0025] 201144449 [0026] 〇 [0027] [0028] Ο [0029 The rotation between the open position and the exit position about the axis of rotation 26 changes the free passage in the gas passage. The valve member 24 has a housing that is rotationally symmetrical about an axis of rotation 26. The housing of the valve member 24 will be described more closely later. The valve member 24 includes a through passage 28 having a cross section substantially the same as the transverse surface of the gas passage 22. The through passage 28 is arranged such that when the valve member 24 is in the open position as shown in Fig. 1, the through passage 28 is aligned with the gas passage 22 and forms a continuous portion of the gas passage 22 so that hot air can freely pass from the hot air control valve 10. The inlet end 14 flows to the outlet end 16. The valve member 24 includes a cylindrical portion 30 having a first base 32 having a connecting pedestal 34 for connecting the valve member 24 to the shaft 36. The connection between the shaft 36 and the valve member 24 will be described more closely later with reference to FIG. The valve housing 12 is provided with a transverse opening 38 to allow the shaft 36 to extend from the outside of the valve housing into the valve housing and to the valve member 24. The transverse opening 38 is sized to allow the valve member 24 to be removed from the valve housing 12 through the lateral opening. Thus, the valve member 24 can be repaired and replaced easily and quickly. It is not necessary to disassemble the hot air control valve 1 〇 from the pipe at the connection flange 18 in order to access the valve member 24. By connecting the axle support member 40 to the attachment flange 42, the assembly including the jaws 24 and the shaft 36 is held in place. Therein, the shaft support assembly 40 includes a shaft bearing 44 and a primary seal 46 (preferably in the form of a stuffing box). It should be noted that these elements are all disposed on the outside of the valve housing 12, i.e., away from the erosive environment in the valve housing 12. Referring now to Figure 2, the connection between the shaft 36 and the valve member 24 will be described more closely. On the central portion of the first base 32, the valve member 24 is formed with a circumferential groove 100108692. Form No. A0101 Page 9/Total 21 Page 1003157581-0 [0030] 201144449 'The circumferential groove 5G has a slanted joint flange The 52 shaft 36 includes a clamping device that engages the circumferential groove 5〇. The clamping device is formed by at least two clamping elements 54, which have projections 56 that engage the circumferential grooves 50. The cross-section of the projecting weir 56 of the clamping element 54 substantially corresponds to the cross-section of the groove 50 of the connecting shoe 34. The contact surface 58 of the large portion 56 is in tight contact with the engaging flange 52 of the connecting shoe 34 to cause the clip The rotational movement of the tensioning element 54 (rotationally secured to the shaft 36) is transmitted to the valve member 24 through the contact surface 58 and the engagement flange 52. The fire resistant paper 60 can be lost between the contact surface μ and the joint flange 52 to further improve the force transmitted from the shaft 36 to the valve member 24. [0033] The at least two clamping elements 54 are prevented from radially outward movement by a retaining ring 62 that engages a circumferential groove 64 disposed in the clamping element 54. The misalignment t piece 54 is coupled to the enlarged head 66 of the shaft 36 by a screw 68. The screw 68 pulls the detent element 54 toward the enlarged head 66. In doing so, the screw 68 also tensions the contact surface 58 against the engagement flange 52 to ensure good contact of the clamping member 54 with the connection pedestal 34 of the valve member 24. The enlarged head 66 can be formed as a single piece with the shaft 36. Preferably, however, the enlarged head 66 is separately formed and secured to the shaft 36 by welding. An intermediate plate 7 is also disposed between the detent element 54 and the enlarged head 66. An auxiliary shaft aligned with the axis of rotation 26 of the shaft 36 (e.g., a polygonal shaft 72 disposed on the intermediate plate 7A) and a corresponding polygonal groove 74' in the connecting shoe 34 of the valve member 24 provides the intermediate plate 70 and valve Shape matching connections between pieces 24. In the event that the frictional connection between the contact surface 58 and the engagement flange 52 fails, the drive of the reading member 24 can be effected by means of a shape-matching connection provided by the polygonal shaft 72. 100108692 Form No. A0101 Page 10 of 21 1003157581-0 201144449 [0034] In the enlarged head 66 and the intermediate plate 70, preferably the screw 68 is guided through the sleeve 76 'the sleeve contacts the clamping element 54 and This limits the travel of the screw 68. The sleeve 76 prevents the screw 68 from being over-tightened and prevents the clamping element 54 or the connecting pedestal 34 from being potentially compromised due to over-tightening. Preferably, the screw is also provided with a pretensioned spring means 78 between the intermediate plate 70 and the nut 80. The spring means 78 (which may be in the form of a disc spring) ensures that the load on the contact area (the joint flange 52 and the contact surface) is defined as a predetermined tension. Actually, the load on the contact area is variable due to temperature changes.
G 由於彈簧裝置78和套管76，該載荷不會超過預定閾值。 [0035] 可以通過軸36本身將冷卻水施加至軸36的擴大頭部66。 在袖的頭部，冷卻水徭向喷灑並以任何公知裝置收集。 [0036] 本發明另一重要方面在於，從閥件24到軸36的較慢的熱 傳遞。實際上，佈置成與熱風直接接觸的閥件24可輕易 地達到1 200°C區域中的溫度。為忍耐該溫度，優選地閥 件24由耐火材料或陶瓷材料製成。閥件24與轴36之間的 〇 各種元件，即，夾緊元件54、固定環62、中間板70以及 多邊形軸72由耐熱鋼製成，從而降低傳遞至轴36的熱。 為了進一步降低熱傳遞，各種元件之間設有間隙82，這 些間隙82中佈置有諸如隔熱氈的隔熱材料。各種元件與 隔熱材料的相互作用允許轴36的溫度降低至40°C。 [0037] 如上所述，熱風控制閥1〇的密封主要由佈置在閥殼12外 侧的主密封裝置46實現。然而，與旋轉轴線26平行且同 轴佈置的環形薄板84可以提供附加密封。環形薄板84包 括與佈置於閥件24的第一基座32的周部中的環形溝槽88 100108692 表單編號 A0101 第 11 頁/共 21 頁 1003157581-0 201144449 相接合的伸出部86。與環形溝槽88相接合的伸出部86形 成曲徑環式密封，以防止大量熱風進入連接裝置以及移 向主密封裝置46。 [0038] 圖3中示出閥件24的優選實施方式。示出的閥件24具有由 圓柱體部分30和半球體部分92形成的外殼，圓柱體部分 具有第一基座32和相對的第二基座90，半球體部分通過 半球體部分的基座連接至圓柱體部分30的第二基座90。 半球體部分92的基座和第二基座90具有相同直徑。第一 基座32包括用於與軸連接的連接墊座34。優選地，半球 體部分92、圓柱體部分30和連接墊座34形成為一體件。 貫穿通道28設置成使得其中心轴線位於包括第二基座90 的平面内。 【圖式簡單說明】 [0〇39] 現在將會參照附圖以示例的形式描述本發明的優選實施 例，其中： [0040] 圖1是通過根據本發明的熱風控制閥的剖切圖； [0041] 圖2是圖1的轴和閥件之間的連接的放大視圖；以及 [0042] 圖3是根據圖1的優選實施例的閥件的透視圖。 【主要元件符號說明】 [0043] 10熱風控制閥 [0044] 12 閥殼 [0045] 14 入口端 [0046] 16 出口端 100108692 表單編號A0101 第12頁/共21頁 1003157581-0 201144449 ❹ ❹ [0047] 18 連接法蘭 [0048] 20 耐火爐襯 [0049] 22 氣體通道 [0050] 24 閥件 [0051] 26 旋轉軸線 [0052] 28 貫穿通道 [0053] 30 圓柱體部分 [0054] 32 第一基座 [0055] 34 連接墊座 [0056] 36 軸 [0057] 38 橫向開口 [0058] 40 轴支承組件 [0059] 42 連接法蘭 [0060] 44 轴轴承 [0061] 46 主密封裝置 [0062] 50 圓周溝槽 [0063] 52 接合法蘭 [0064] 54 夾緊元件 [0065] 56 突出部 100108692 表單編號A0101 第13頁/共21頁 1003157581-0 201144449 [0066] 58 接觸表面 [0067] 60 对火隔熱紙 [0068] 62 固定環 [0069] 64 圓周凹槽 [0070] 66 擴大頭部 [0071] 68 螺釘 [0072] 70 中間板 [0073] 72 多邊形轴 [0074] 74 多邊形凹槽 [0075] 76 套管 [0076] 78 彈簧裝置 [0077] 80 螺帽 [0078] 82 間隙 [0079] 84 環形薄板 [0080] 86 伸出部 [0081] 88 環形溝槽 [0082] 90 第二基座 [0083] 92 半球體部分 [0084] 94 中心軸線 100108692 表單編號A0101 第14頁/共21頁 1003157581-0G Due to the spring means 78 and the sleeve 76, the load does not exceed a predetermined threshold. [0035] Cooling water may be applied to the enlarged head 66 of the shaft 36 by the shaft 36 itself. At the head of the sleeve, the cooling water is sprayed and collected by any known means. Another important aspect of the invention is the slower heat transfer from the valve member 24 to the shaft 36. In fact, the valve member 24 arranged to be in direct contact with the hot air can easily reach a temperature in the region of 1 200 °C. To endure this temperature, preferably the valve member 24 is made of a refractory or ceramic material. The various components between the valve member 24 and the shaft 36, i.e., the clamping member 54, the retaining ring 62, the intermediate plate 70, and the polygonal shaft 72 are made of heat resistant steel to reduce heat transfer to the shaft 36. In order to further reduce heat transfer, gaps 82 are provided between the various elements, and a heat insulating material such as an insulating felt is disposed in the gaps 82. The interaction of the various components with the insulating material allows the temperature of the shaft 36 to be lowered to 40 °C. [0037] As described above, the sealing of the hot air control valve 1 is mainly achieved by the main sealing device 46 disposed on the outer side of the valve casing 12. However, the annular sheet 84, which is parallel and coaxial with the axis of rotation 26, can provide an additional seal. The annular sheet 84 includes an annular groove 88 100108692 that is disposed in the periphery of the first base 32 of the valve member 24. Form No. A0101 Page 11 of 21 1003157581-0 201144449 Engagement protrusion 86. The projecting portion 86 that engages the annular groove 88 forms a labyrinth ring seal to prevent a large amount of hot air from entering the connecting device and moving toward the main sealing device 46. A preferred embodiment of the valve member 24 is shown in FIG. The valve member 24 is shown having an outer casing formed by a cylindrical portion 30 having a first base 32 and an opposite second base 90, the hemispherical portion being connected by the base of the hemispherical portion. To the second base 90 of the cylindrical portion 30. The base of the hemispherical portion 92 and the second base 90 have the same diameter. The first base 32 includes a connection pedestal 34 for connection to a shaft. Preferably, the hemispherical portion 92, the cylindrical portion 30 and the connecting pedestal 34 are formed as a single piece. The through passage 28 is disposed such that its central axis lies in a plane including the second base 90. BRIEF DESCRIPTION OF THE DRAWINGS [0040] FIG. 1 is a cross-sectional view through a hot air control valve according to the present invention; 2 is an enlarged view of the connection between the shaft and the valve member of FIG. 1; and [0042] FIG. 3 is a perspective view of the valve member according to the preferred embodiment of FIG. 1. [Main component symbol description] [0043] 10 hot air control valve [0044] 12 valve housing [0045] 14 inlet end [0046] 16 outlet end 100108692 form number A0101 page 12 / total 21 page 1003157581-0 201144449 ❹ ❹ [0047 ] 18 Flange [0048] 20 Refractory lining [0049] 22 Gas channel [0050] 24 Valve [0051] 26 Rotation axis [0052] 28 Through channel [0053] 30 Cylinder part [0054] 32 First base 34 Connecting the pedestal [0056] 36 Axis [0057] 38 Transverse opening [0058] 40 Shaft bearing assembly [0059] 42 Connecting flange [0060] 44 Shaft bearing [0061] 46 Main sealing device [0062] 50 Circumference Groove [0063] 52 Engagement flange [0064] 54 Clamping element [0065] 56 Projection 100108692 Form number A0101 Page 13 of 21 1003157581-0 201144449 [0066] 58 Contact surface [0067] 60 Hot paper [0068] 62 Retaining ring [0069] 64 Circumferential groove [0070] 66 Enlarged head [0071] 68 Screw [0072] 70 Intermediate plate [0073] 72 Polygon axis [0074] 74 Polygon groove [0075] 76 Sleeve [0076] 78 Spring device [0077] 80 Nut [0078] 82 Clearance [0079] 84 Annular sheet [0080] 86 Extension [0081] 88 Annular groove [0082] 90 Second pedestal [0083] 92 Hemispherical part [0084] 94 Central axis 100108692 Form number A0101 Page 14 / Total 21 page 1003157581- 0