200835829 九、發明說明： 【發明所屬之技術領域】 本發明係關於在連接口連接排 作排水管路之排水槽（咖hbasin)。^於地中而當 【先前技術】 圖4表示習知之排水槽！。如圖5所示 排水主溝健線狀的直槽，㈣在左右料接口^ 各別連接厚度較薄的排水f 2、3，並形 的厚度較薄的排水管2使排水流人至下_之 的排水管3的排水管路。 予度車乂屬 上述習知的排水槽！之連接口 u、12，係在端部形成 比此等2接口本體lla、12 a之内筒具有更大直徑的同心 狀之内筒的套管(默㈣部Ub、m (例如，參照專利 文獻1)。X，在此等的套管部llb、12b之内管則嵌入厚 度較薄的排水管2、3的外筒而連接。 此處，排水管路之排水管除了使用厚度較薄的薄排水管 2、3 (JIS 規格（japanese Industrial 之200835829 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a drain tank that is connected to a drain line at a connection port. ^在地中而当 [Prior Art] Figure 4 shows a conventional drain groove! . As shown in Fig. 5, the drain groove of the main groove is line-shaped, and (4) the drains f 2 and 3 are connected to each other at the left and right material ports, and the thinner drain pipe 2 is formed to make the drain flow to the bottom. The drain line of the drain pipe 3 of _. The rut is a conventional drain tank! The connecting ports u, 12 are sleeves (meritary (four) portions Ub, m having concentric inner cylinders having larger diameters than the inner cylinders of the two interface bodies 11a, 12a at the ends (for example, refer to the patent) In the document 1), X, the inner tubes of the sleeve portions 11b and 12b are inserted into the outer cylinders of the thinner drain pipes 2, 3. Here, the drain pipes of the drain pipes are thinner except for the use. Thin drains 2, 3 (JIS specifications (japanese Industrial
VU 官，或 CNS 規格（Chinese National Standards)之 A 管）以外，也使用厚度較厚的厚排水管4、5 (JIS規格之 VP管，或CNS規格之B管）等。又，圖5所示之排水槽i， 由於使用厚度較薄的薄排水管2、3,因此，在連接口 u、 12藉使連接口本體iia、12 a之内筒半徑與套管部iib、 12b之内筒半徑的差等於此薄排水管2、3的厚度，則可 使所連接之薄排水管2、3的内筒之底部的高度與連接口 312XP/發明說明書(補件)/96-07/96111263 5 200835829 本體lla' 12 a的内筒之底部的高度呈—致而使排水的流 動不會被遮蔽。 田仁疋^如圖6所不，如在上述排水槽丨連接厚度較厚的 厚排K g 4 5 %，即使其外徑和薄排水管2、3相同，但 是因為厚壁的較其内徑會比厚出來部份小此料，因此， 此等厚排水g 4、5的内筒之底部的高度也變成比連接口 本體11:、12 a的内筒之底部的高度更高，而在下流侧之 厚排水管5的入口則合恭& a L ^ . 則θ务生向上之高低差而有排水的流 動受阻之問題。 (專利文獻1)曰本專利特開平Η51529號公報（第 【發明内容】 (發明所欲解決之問題） 本表月係提供-種使下流側之連接口的套管部之内筒 在比連接4體的㈣之更下方偏心，而即使連接厚度厚In addition to the VU official, or the A-tube of the Chinese National Standards, thick drain pipes 4 and 5 (JIS-size VP pipe or CNS-size B pipe) are also used. Further, in the drain groove i shown in Fig. 5, since the thin drain pipes 2, 3 having a small thickness are used, the inner tube radius and the sleeve portion iib of the joint body iia, 12a are made at the joint ports u, 12. The difference in the inner tube radius of 12b is equal to the thickness of the thin drain pipes 2, 3, so that the height of the bottom of the inner tube of the connected thin drain pipes 2, 3 and the connection port 312XP / invention manual (supplement) / 96-07/96111263 5 200835829 The height of the bottom of the inner cylinder of the body lla' 12 a is such that the flow of the drainage is not obscured. Tian Renyu ^ as shown in Figure 6, if the thick groove K g 4 5 % is connected to the above-mentioned drain groove, even if the outer diameter is the same as the thin drain pipes 2, 3, but because the thick wall is smaller than the inside The diameter of the inner tube of the thick drainage g 4, 5 is also higher than the height of the bottom of the inner tube of the connection body 11:, 12 a, and The entrance of the thick drain pipe 5 on the downstream side is the same as the height of the upper drain and the flow of the drain is blocked. (Patent Document 1) Japanese Patent Laid-Open No. 51529 (Summary of the Invention) (Problems to be Solved by the Invention) This table provides a type of inner tube of the sleeve portion of the connection port on the downstream side. 4 body (four) is more eccentric below, and even if the connection thickness is thick
的連接管，此連接營之肉铃&广 _ 吕之内同的底部之咼度也不會比連接口 本體之内筒的底部高度更高，如此所成的排水槽。 (解決問題之手段） 申請專利範圍第1項之發明，係其具有1個以上的上流 侧^連接口和1個下流側之連接口，在各連接Π的端部， 开有比此連接口本體之内筒更大直徑的内筒之套 部’如此_水槽，其特徵為，使下㈣的連接σ之套其 部的：筒在：該連接口本體之内筒的更下方偏心形成 申明專利乾m第2項之發明，其特徵為，前輯水槽自 312XP/發明說明書(補件)/96-07/96111263 6 200835829 侧之連接口至下流側的連接口便形成有流動坡度 (flow gradient)。 申:：利範圍第3項之發明，係被連接排水管，而形成 排水、/，1L路之排水槽，其中， 套接Ϊ接口本體;及’具有連接至前述排水管的 :月J述套s部之内控比前述連接口本體的内徑更大， 管部之前述内徑的中心，相對於前述連接口本體 别述内徑的中心呈偏心，如此所成之排水槽。 :=_4項之發明’其係申請專利範圍第3項 之前Γ水管之内經的一部份，在前述連接口本體 之範圍第5項之發明’其係申請專利範圍"項 前:排水管之内徑的一部份，在前述連接口本體 之别述内徑的一部份使其不會發生向下之 述排水管連接至套管部。 =_ 月 申明專利範圍第6項之發明，盆在由 之排水槽中， 叫月*係申睛專利範圍第3項 前述連接口係下流側連接口， 鈾述套管部係下流侧套管部， 而前述連接口本體係下流側連接口本體。 312ΧΡ/發明說明書(補件)/96-07/96111263 η 200835829 申請專利範圍第7項之 之排水槽中， ，、係申請專利範園第6項 其更具備有：上流侧連接口 管所構成之μ ★ /丨：&〜 及’連接至前述排水 而前述上流側套管部之師匕=接;V如此所構成， 的内徑更大。 丨之述上流側連接口本體 申請專利範圍第8項之發明，其 之排水槽中， τ月号不弟7項 前述上流侧套管部之前述内徑的中心和上 接口本體的前述内徑之中心呈一致。 抓'連 之=:範圍第9項之發明’其係申請專利範圍第7項 口 ==述線上:侧連接…至前述下流侧連接 申請專利範圍第1G項之發明’其係申請 項之排水槽中， 彳礼国^ 7 前述流路自前述上流侧連接口本體至前述下流側 口本體被形成為、彎曲狀。 範圍第 申請專利範圍第11項之發明，其係申請專利 項之排水槽中， 別述上流側連接口具有複數個上流侧連接Q。 申請專利範圍第12項之發明，其係申請專利範圍 項之排水槽中， 體形 自前述上流侧連接口本體至前述下流側連接口本 312XP/發明說明書(補件)/96-07/96111263 8 200835829 成有流動坡度。 (發明效果） 根據申請專利範圍第1項之發明，由於使下流側的連接 口之套管部的内筒於下方偏心，因此，當連接比連接口本 體的内筒半徑小此偏心量以下的差之内筒半徑較小的連 接管日守’此連接管之内筒底部高度則不會比連接口本體的 内筒底部高度更高，而排水可順利地流動。因此，套管部 的偏心量越大時則可連接厚度更厚的連接管，而其可利用 藝各種尽度之連接管。又，由於在上流侧的連接口，即使連 接既定以上厚度的連接管時也僅發生向下之高低差，因 此’厚度較厚之連接管可被利用。 此處’連接口在上流側或下流侧只要事先設定即可。但 疋，似此而設定連接口在上流侧或下流侧時，則例如彎管 等，即不能以1種類之排水槽而用來兼用為左右的彎轉 管。 φ 根據申請專利範圍第2項之發明，在排水槽形成有流動 坡度，由於連接口可依照坡度的方向而自動地決定連接口 •在上流侧或下流侧，因此，藉使下流侧的連接口之套管部 的内筒在下方偏心時，則對在上流側和下流側使用即無有 新的限制。 【實施方式】 以下依照圖1至圖3說明本發明之實施形態。又，此等 圖中，對和具有圖4至圖6所示之琴知例同樣功能之構成 構件其被附記以同一符號。 9 312XP/發明說明書(補件)/96-07腕11263 200835829 圖1所示之本實施形態的排. ^ ^ ^ _尺軋1係，和習知例同樣， 以“成k動坡度之直線槽來說明。此排水槽Η 乙烯等之樹脂所構成，在本體 ^ 13之雨嫂❹女〜 丰因筒狀的排水主溝 =兩W权有同狀的連接口 u、m，在此排水主The connecting pipe, the connection bell of the camping bell and the wide bottom of the inner ring of the connecting body is not higher than the bottom of the inner tube of the connecting port body, so that the drain groove is formed. (Means for Solving the Problem) The invention of claim 1 has one or more upstream side connection ports and one downstream side connection port, and the connection port is opened at the end of each connection port The inner tube of the inner tube has a larger diameter inner tube sleeve portion. Thus, the water tank is characterized in that the lower (four) connection σ is sleeved on the other side: the cylinder is: the lower part of the inner tube of the connection port body is eccentrically formed to form a declaration The invention of the second paragraph of the patent dry m is characterized in that the front water tank is formed with a flow gradient from the connection port on the side of the 312XP/invention specification (supplement)/96-07/96111263 6 200835829 side to the downstream side (flow) Gradient). Shen:: The invention of the third item of the profit range is connected to the drain pipe to form a drain, /, 1L road drain tank, wherein the socket interface body; and 'having a connection to the drain pipe: The internal control of the sleeve s is larger than the inner diameter of the connector body, and the center of the inner diameter of the tube portion is eccentric with respect to the center of the inner diameter of the connection port body, and the drain groove is formed. Invention of the invention of the invention of the invention of the invention of the invention of the invention of the invention of the invention of the invention of the invention A portion of the inner diameter of the tube is such that a portion of the inner diameter of the connector body does not cause the drain to be connected to the sleeve portion. =_ The invention of the sixth paragraph of the patent scope of the month, the basin in the drainage channel, called the month* system of the patent scope, the third connection port is the downstream side connection port, and the uranium casing system is the downstream side casing. And the connection port body of the downstream side of the system. 312ΧΡ/Invention Manual (supplement)/96-07/96111263 η 200835829 In the drainage tank of the seventh application patent scope, the application for the patent garden is the sixth item, which is more suitable for: the upstream side connection port μ ★ /丨:&~ and 'connected to the aforementioned drain and the upper side sleeve portion of the above-mentioned upper side is connected; V is configured such that the inner diameter is larger.发明 丨 上 上 上 上 本体 本体 本体 本体 本体 本体 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上The center is consistent. Grasping the 'invention=: the invention of the ninth item' is the seventh item of the patent application scope == online: side connection...to the downstream side of the invention of the patent application scope 1G' In the water tank, the water flow path is formed in a curved shape from the upstream side connection port body to the downstream side port body. The invention of claim 11 is the invention of the invention, wherein in the drain tank of the patent application, the upstream side connection port has a plurality of upstream side connections Q. The invention of claim 12, which is in the drainage groove of the patent application scope, is in the form of a body shape from the upstream side connection port body to the downstream side connection port 312XP/invention specification (supplement)/96-07/96111263 8 200835829 has a flow gradient. According to the invention of the first aspect of the invention, since the inner cylinder of the sleeve portion of the downstream side connection port is eccentric downward, the connection is smaller than the inner cylinder radius of the connection port body by less than the eccentric amount. The connecting pipe with a small inner cylinder radius is the same as the inner bottom of the connecting pipe. The height of the inner bottom of the connecting pipe is not higher than the bottom of the inner cylinder of the connecting body, and the drainage can flow smoothly. Therefore, the larger the amount of eccentricity of the sleeve portion, the more thick the connecting pipe can be connected, and the connecting pipe of various degrees can be utilized. Further, since the connection port on the upstream side is connected to the connecting pipe of a predetermined thickness or more, only the downward height difference occurs, so that the thicker connecting pipe can be utilized. Here, the connection port may be set in advance on the upstream side or the downstream side. However, when the connection port is set to the upstream side or the downstream side as described above, for example, a bent pipe or the like, that is, it cannot be used as a left and right bending pipe by one type of drainage groove. φ According to the invention of claim 2, a flow gradient is formed in the drain groove, and the connection port can automatically determine the connection port according to the direction of the slope. • On the upstream side or the downstream side, therefore, the connection port on the downstream side is used. When the inner cylinder of the sleeve portion is eccentric below, there is no new restriction on the use of the upstream side and the downstream side. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to Figs. 1 to 3 . Further, in the drawings, constituent members having the same functions as those of the example shown in Figs. 4 to 6 are denoted by the same reference numerals. 9 312XP / invention manual (supplement) / 96-07 wrist 11263 200835829 Figure 1 shows the row of this embodiment. ^ ^ ^ _ feet rolling 1 series, as in the conventional example, with "k straight slope This tank is composed of a resin such as vinyl, which is made of a resin such as ethylene, and is mainly used in the main body of the rain. the Lord
Mi之"^方U可連接至未圖示之高度調節筒用的上 部連接口 14。 本實施形態之排水槽1其連接口 11被設^在上流侧， 而連接口 12則被设^在下流侧。此等連接口 u、12 底部高度與排水主溝13 -致之内筒所形成的連接口本體 11a、12a，以及，被形成在其端部，比該連接口本體1 ia、 12a的内筒具有更大直徑之内筒的套管部丨丨卜i2b，如此 所構成。又’圖1係在套管部Ub、12b之内筒嵌入厚度 車父厚的厚排水管4、5之外筒而連接者。 上流侧之連接口 11的連接口本體Ua之内筒和套管部 1 lb的内筒，和圖5所示之習知例同樣為同心狀。亦即， _連接口本體11a的内徑中心與套管部llb之内徑中心呈一 致。另一方面，下流侧的連接口 12之連接口本體12&的 •内筒和套管部之内筒不是呈同心狀，而是相對於連接 口本體12a的内筒，套管部12b的内筒被偏心形成在下 方。亦即，對連接口本體12a的内徑中心，套管部J 2b之 内徑中心被偏心形成。而且，此一套管部12b向下方的偏 心量等於連接口本體12a的内筒半徑與厚排水管5之内筒 半徑的差距量。 因此，被連接在上流侧的連接口 11之厚排水管4的内 312XP/發明說明書(補件)/96-07/96111263 10 200835829 间之底硭的南度麦成比連接口本體之内筒的底部之 尚度更咼，而和圖6所示之習知例同樣，在此厚排水管4 的出口則發生向下之高低差。但是，在下流側的連接口 12,由於套管部12b之内筒的底部之高度比連接口本體 12a的内筒底部的高度較低於厚排水管5的厚度部部份， 因此，此厚排水管5的内筒之底部的高度與連接口本體 12a之内筒的底部之高度呈一致，而不會發生有向上之高 低差。 根據上述構成，由於連接在下流侧的連接口 12之套管 部12b的厚排水管5之内筒的底部之高度和連接口本體 12a的内筒之底部的高度呈一致，因此，在厚排水管5的 出口則不會發生向上之高低差而遮蔽排水的流動，此一排 水則可順利地流動。又，在上流侧之連接口 u，和習知 例相同，厚排水管4的内筒之底部的高度雖然比連接口本 體11a之内筒的底部之高度更高，但其僅在此厚排水管5 的出口會發生向下之高低差’因此其不會遮蔽排水之流 動。 而且，在此排水槽1之連接口 u、12也可連接和厚排 水=4、5的外徑相同而厚度更薄之例如圖5所示的薄排 水官2、3。在此情況下，下流侧之連接口 12，薄排水管 3之内筒的底部之高度成為比連接口本體12&的内筒之底 部的高度更低，而在此薄排水管3之入口則發生向下之高 低差’且上流侧之連接〇 n，和習知例同樣，由於薄排 水管2之内筒的底部之高度和連接口本體Ua的内筒之底 312χΡ/發明說明書(補件)/96-07/96111263 11 200835829 口 i5的冋度壬一致，因此，其排水可順利地流動。 與又，在此排水槽1之連接口 11、12即使連接比薄排水 g 2、3更厚，而比厚排水管4、5更薄的排水管，則由於 上肌側之連接口 11的排水管之出口和下流侧的連接口 12 之排水管的入口均變成向下之高低差，因此，其排水可順 利地流動。 但是’此排水槽i必須要以連接口 n當作上流侧來使 用，且以連接口 12當作下流侧來使用。 又，=上述實施形態中，雖然以未形成流動坡度之排水 才a 1來说明’但在圖2則表示形成有流動坡度之排水槽j。 此排水槽1得、，自連接σ u卩由排水主冑13至連接口 12止，使内筒的底部逐漸變低而形成流動坡度。因此， 此排水槽1原來連接π 14即被設定在上流侧，而連接口 12係在下流侧，因此在❹上其並未增加有新的限制。 形成上述流動坡度之排水槽丨，其上流侧的連接口 u 和圖5所示之習知例的連接口 u相θ，套管部爪之内 筒和連接口本體lla #内筒被形成為同心狀，且附有坡 度。又’下流侧之連接口 12和圖丨所示之連接口 u相同， 套管部Ub的内筒被形成比連接口本體Ua之内筒在下方 偏心，且附有坡度。 在上述形成有流動坡度的排水槽丨之連接口丨丨、12, 如圖2所*，當連接厚度較厚的厚排水管4、5時，由於 在上流側的連接口 U其厚排水管4之出口變成向下之高 低差，而在下流側的連接口 12之厚排水管5的入口則不 312Χρ/發明說明書(補件)/96-07/96111263 η 200835829 發生高低差，因此，其排水可順利地流動。又，在此排水 槽1的連接口 11 、12,如圖3所示，即使連接厚度較薄 的薄排水管2、3時，由於在上流侧的連接口 u之薄排水 管2之出口變成沒有高低差，而在下流侧的連接口 12之 薄排水管3的入口則變成向下之高低差，因此，排水可順 利地流動。又，在此排水槽1之連接口 11、12即使連接 比薄排水管2、3的厚度更厚，而比厚排水管4、5之厚度 更薄的排水管，由於上流侧之連接口丨丨的排水管出口與 下流側之連接口 12的排水管入口均成為向下之高低差， 因此，排水可順利地流動。 又，在上述實施形態中，雖然說明排水主溝丨3是直線 狀的排水槽1，但對於一對連接口 n、12並非配置在直 線上而係f曲槽等的排水槽丨時其也同樣地可被實施。 又此排水槽1，即使是具有2個以上的上流側之連接口 和1個下流侧之連接口之合流管者亦可同樣地實施。 • 又，上述實施形態中，雖然主要顯示使用厚度較厚的厚 排j管4、5或厚度較薄的薄排水管2、3，但其並非用來 •限定排水管之厚度，只要使套管部的偏心量成為較大，則 亦可使用厚度更厚的排水管。 、 【圖式簡單說明】 圖1表示本發明之-實施形態的排水槽之縱剖面圖。 圖2表示本發明之一實施形態的形成 槽的縱剖面圖。 又 < 排水 圖3表示本發明之一實施形態在形成流動坡度之排水 312XP/發明說明書(補件)/96-07/96111263 13 200835829 槽連接薄排水管之縱剖面圖。 圖4表示習知例之排水槽的全體斜視圖。 圖5表示習知例之排水槽的縱剖面圖。 圖6表示在習知例之排水槽的連接口連接厚排水管後 之縱剖面圖。 【主要元件符號說明】 1 排水槽 2 ^ 3 薄排水管 4、5 厚排水管 Π、12 連接口 11a > 12a 連接口本體 11b 、 12b 套管部 13 排水主溝 14 上部連接口The Mi's "U" can be connected to the upper connection port 14 for a height adjustment cylinder (not shown). In the drain tank 1 of the present embodiment, the connection port 11 is provided on the upstream side, and the connection port 12 is provided on the downstream side. The connecting port bodies 11a, 12a formed by the bottom height of the connecting ports u, 12 and the inner drain groove 13 are formed at the ends thereof, and the inner cylinders of the connecting port bodies 1 ia, 12a are formed. The sleeve portion i2b having an inner tube of a larger diameter is constructed as such. Further, Fig. 1 is a case in which the inner cylinders of the sleeve portions Ub and 12b are fitted into the outer tubes of the thick drain pipes 4 and 5 having a thick thickness. The inner cylinder of the joint body Ua of the connection port 11 on the upstream side and the inner cylinder of the sleeve portion 11b are concentrically similar to the conventional example shown in Fig. 5. That is, the center of the inner diameter of the joint body 11a coincides with the center of the inner diameter of the sleeve portion 11b. On the other hand, the inner cylinder of the joint body 12 of the downstream side connection port 12 and the inner cylinder of the sleeve portion are not concentric, but are opposite to the inner cylinder of the joint body 12a, inside the sleeve portion 12b. The cylinder is eccentrically formed below. That is, the center of the inner diameter of the sleeve portion J 2b is eccentrically formed at the center of the inner diameter of the joint body 12a. Further, the amount of eccentricity of the sleeve portion 12b downward is equal to the difference between the radius of the inner cylinder of the joint body 12a and the inner cylinder radius of the thick drain pipe 5. Therefore, the inner 312XP of the thick drain pipe 4 connected to the upstream side of the connection port 11/the invention specification (supplement)/96-07/96111263 10 200835829 is the inner tube of the south end of the connection port body The bottom of the bottom is more sturdy, and as in the conventional example shown in Fig. 6, a downward height difference occurs at the exit of the thick drain pipe 4. However, in the connection port 12 on the downstream side, since the height of the bottom of the inner cylinder of the sleeve portion 12b is lower than the thickness of the bottom portion of the inner cylinder of the joint body 12a to the thickness portion of the thick drain pipe 5, this thickness is The height of the bottom of the inner cylinder of the drain pipe 5 coincides with the height of the bottom of the inner cylinder of the joint body 12a without an upward height difference. According to the above configuration, since the height of the bottom of the inner cylinder of the thick drain pipe 5 of the sleeve portion 12b connected to the downstream side of the joint port 12 is the same as the height of the bottom of the inner cylinder of the joint body 12a, the thick drain is The outlet of the tube 5 does not cause an upward difference in height to shield the flow of the drainage, and this drainage can flow smoothly. Further, in the connection port u on the upstream side, as in the conventional example, the height of the bottom of the inner cylinder of the thick drain pipe 4 is higher than the height of the bottom of the inner cylinder of the joint body 11a, but it is only drained here. The outlet of tube 5 will have a downward height difference so that it does not obscure the flow of drainage. Further, the connection ports u, 12 of the drain groove 1 may be connected to the thin water discharge members 2, 3 as shown in Fig. 5, for example, having the same outer diameter and thicker thickness as the thick water discharges 4, 5. In this case, the connection port 12 on the downstream side, the height of the bottom of the inner cylinder of the thin drain pipe 3 becomes lower than the height of the bottom of the inner cylinder of the joint body 12& and the inlet of the thin drain pipe 3 is The downward height difference 'and the upstream side connection 〇n, as in the conventional example, is due to the height of the bottom of the inner tube of the thin drain pipe 2 and the bottom of the inner tube of the joint body Ua 312χΡ/invention specification (supplement ) /96-07/96111263 11 200835829 The mouth i5 has the same twist, so the drainage can flow smoothly. Further, even if the connection ports 11, 12 of the drain tank 1 are thicker than the thin drains g 2, 3 and thinner than the thick drain pipes 4, 5, the connection port 11 of the upper muscle side is Both the outlet of the drain pipe and the inlet of the drain pipe of the connection port 12 on the downstream side become a downward height difference, so that the drain can smoothly flow. However, the drain groove i must be used as the upstream side with the connection port n and the connection port 12 as the downstream side. Further, in the above-described embodiment, the drainage is performed a1 without forming a flow gradient. However, Fig. 2 shows the drainage groove j in which the flow gradient is formed. The drain groove 1 is obtained, and the connection σ u 止 is stopped by the drain main raft 13 to the connection port 12, so that the bottom of the inner cylinder gradually becomes lower to form a flow gradient. Therefore, the drain groove 1 is originally connected to π 14 to be set on the upstream side, and the connection port 12 is on the downstream side, so that no new restrictions are imposed on the crucible. The drain groove forming the flow gradient, the connection port u on the upstream side and the connection port u phase θ of the conventional example shown in FIG. 5, the inner tube of the sleeve portion claw and the connection port body 11a #inner tube are formed as Concentric and with slope. Further, the connection port 12 on the downstream side is the same as the connection port u shown in Fig., and the inner tube of the sleeve portion Ub is formed to be eccentric below the inner tube of the connection port body Ua with a slope attached thereto. In the above-mentioned connection port 12, 12 of the drainage groove formed with the flow gradient, as shown in FIG. 2, when the thick drain pipes 4 and 5 are connected thick, the thick drain pipe is connected due to the connection port U on the upstream side. The exit of 4 becomes a downward height difference, and the entrance of the thick drain 5 of the connection port 12 on the downstream side is not 312 Χ / invention specification (supplement) / 96-07/96111263 η 200835829, and therefore, the height difference The drainage can flow smoothly. Further, in the connection ports 11 and 12 of the drain tank 1, as shown in Fig. 3, even when the thin drain pipes 2 and 3 having a small thickness are connected, the outlet of the thin drain pipe 2 at the connection port u on the upstream side becomes There is no height difference, and the inlet of the thin drain pipe 3 of the connection port 12 on the downstream side becomes a downward height difference, and therefore, the drain can smoothly flow. Further, even if the connection ports 11 and 12 of the drain groove 1 are connected thicker than the thickness of the thin drain pipes 2 and 3, and the thickness of the drain pipes 4 and 5 is thinner, the connection port on the upstream side is Both the drain outlet of the crucible and the inlet of the drain of the connection port 12 on the downstream side are downwardly leveled, so that the drain can flow smoothly. Further, in the above-described embodiment, the drain main groove 3 is a linear drain groove 1. However, when the pair of connection ports n and 12 are not arranged on a straight line and the groove is bent or the like, The same can be implemented. Further, the drain tank 1 can be similarly implemented even in the case of a joint having two or more connection ports on the upstream side and one connection port on the downstream side. • In the above embodiment, although it is mainly used to use thick-thickness j-tubes 4 and 5 or thin-thin thin drain pipes 2 and 3, it is not used to limit the thickness of the drain pipe. If the eccentric amount of the pipe portion is large, a thicker drain pipe can also be used. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a drain groove according to an embodiment of the present invention. Fig. 2 is a longitudinal sectional view showing a forming groove in an embodiment of the present invention. Further, <Drainage Fig. 3 is a longitudinal sectional view showing a groove-connected thin drain pipe in the form of a drain 312XP/invention specification (supplement)/96-07/96111263 13 200835829 which forms an embodiment of the present invention. Fig. 4 is a perspective view showing the entire drain groove of a conventional example. Fig. 5 is a longitudinal sectional view showing a drain groove of a conventional example. Fig. 6 is a longitudinal sectional view showing the connection of a drain groove of a conventional example to a thick drain pipe. [Main component symbol description] 1 Drainage groove 2 ^ 3 Thin drain pipe 4, 5 Thick drain pipe Π, 12 connection port 11a > 12a Connector body 11b, 12b Casing part 13 Drainage main groove 14 Upper connection port
312XP/發明說明書(補件)/96-07/96111263 14312XP/Invention Manual (supplement)/96-07/96111263 14