經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（1 ) 本發明有關一種供應最適量觸媒至一心型吹射機之 方法與設備，心型吹射機用於製造模鑄製程之型芯與鑄 模，其中該觸媒係以液體或氣體形式由一加壓容器取得， 及在其導入該心型吹射機之前與一沖洗氣體混合。 發明背景： 吾人已知用於製造模鑄製程用型芯之方法。根據胺基 曱酸酯冷盒製芯法將胺當作觸媒以製造型芯之應用係敘 述於Giesserei 78(1991)第11冊、第372至374頁之特 刊中。於該型芯與鑄模生產之習知方法中，使用包含苯曱 醚（benzyl ether)樹脂（鄰-紛甲階紛經樹脂，orthophenol resol)與一 異氰酸酯之模 製材料 ，而 用第三胺觸媒 固化。因胺之催化效果於氣相中特別有利，使用沸點約攝 氏3度之三曱基胺（trimethylamine，TMA)進行測試，及為 此緣故，據此可以一相當簡單之方式用氣態胺固化。於聚 亞胺酯反應期間藉著形成過渡反應化合物獲得一第三胺 之加速效果係用下列反應方程式敘述之： -RN=C=0 + (CH3)3N ^ -R-N=C-0(-} \ 異氰酸酯 TMA N(+)(CH3)3 -R-N=C-0㈠ + (OH)-R’-OH — -R-N(H)-C=0 + N(CH3)3 \ \ N(+)(CH3)3 or，-oh 多元醇 聚亞胺酯 當藉著該習知方法製造型芯時，其缺點是該第三胺頗 超過所需數量地供應至該心型吹射機。雖然已顯示三甲基 -3- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） menu: 87177 ---------------ί·' ' 衣----，---„—訂·--------_ (請先閱讀背面之注咅〗Ϋ項再填寫本頁) 五、發明說明（2 ) =之應料相較於其他胺類可能㈣地減少㈣胺量達 、力百分之5G ’三甲基胺之應用仍有附隨之缺點。—項問題 ^亥惡臭所產生之極端令人厭純味，這造成必需使所用 〇又^ ^全部零件絕對防漏。在該處之所有管道系統必須以 相當尚之成本施行隔離。 經濟部智慧財產局員工消費合作社印製 製造模鑄製程用型芯之一方法係敘述於德國DE =706472. 8號專利中，其中氣態三甲基胺係引導經過一計 置裝置之各零件’及純在以每型芯所用型砂之數量之 〇· 01至0. 12重量百分比之濃度下被引導進人該心型吹射 機，並在該處與該型砂接觸。根據該方法之一較佳實施 例，其擬議該氣態三甲基胺暴露至一沖洗氣體。大致而言 根據德國DE 1_472.8專利中所述之方法，其擬議由I 加塵容器取出該三曱基胺及藉著一導管引導該三甲基胺 至該心型吹射機。一連接器係位於該沖洗氣體用之導管 中，忒冲洗氣體以這方式接觸該觸媒。然而其不利的是當 使用該方法時，因該加壓容器中壓力減少之結果減少引導 至該心型吹射機之觸媒量。所以不可能增加及/或設定觸 媒之一最適量。再者，其不利的是在觸媒及沖洗氣體之混 合物引導至該心型吹射機時之壓力係相當低，故其不可能 以所想要之速度引導觸媒及沖洗氣體之混合物到該心型 吹射機。 發明概要： 所以本發明之目的係提供一用於增加最適量觸媒至 一用於生產模鑄製程之型芯或鑄模心型吹射機之方法及 * 4- 本紙張尺度適用中國國家標準（CNS)A4規格（210x297公釐） 、發明說明（3) 設備’其確保該心型吹射機係於最短之可能時間内獲得最 適量觸媒。 根據本發明供一供應最適量觸媒至心型吹射機之 方法’用於製造模鑄製程之型愁或禱模，其中一觸媒係以 液體或氣體形式由-加壓容器⑴取出，及在其導入該心 型吹射機之前與-沖洗氣體混合，其特徵為首先一最適量 觸媒及其次該沖洗氣體在G.1至10巴（bar)之壓力下供給 進入一壓力容器（15)，該觸媒及沖洗氣體係在該壓力容器 (15)中混合，及所形成之混合物係導入該心型吹射機。 ,在此所用之心型吹射機”一詞包含鑄造工廠中用於 製造模鑄製程之鑄模所使用之裝置或設備。 該觸媒可能譬如是一第三胺（諸如三甲基胺）、甲酸甲 酯、二氧化硫或二氧化碳。該方法於使用苯曱醚樹脂及異 氰酸酯及諸如三乙胺之第三胺當作觸媒以生產型芯或鑄 模特別有用。 例如可作使用一氣瓶當作容納該觸媒之加壓容器。通 常空氣係用作為該沖洗氣體，但亦可使用譬如二氧化碳之 其他氣體。在〇. 1至10巴下供應該沖洗氣體至該壓力容 器使其可在0·1至10巴範圍内調整該壓力容器中之壓 力。有利的是藉由一閥門來供應該觸媒。最適量觸媒係依 瓜生產之型芯或鑄模之尺寸而定，及基於特定之型芯或鑄 模之各種參數預先決定。 令人驚訝地是已顯示在根據本發明供應最適量觸媒 至一心型吹射機之方法中，其能以有利之方式於最佳時 經濟部智慧財產局員工消費合作社印製 A7 _B7__ 五、發明說明（4 ) 引導最適量觸媒經過該心型吹射機。該觸媒量及芦沖洗氣 體量間之關係可調整至1:1000及1:10000之間並保持不 變，並同時使二者之混合物流經該心型吹射機。以這方式 可避免壓力中之不利變化。最佳時間係指該混合物完全流 經該心型吹射機所需之最短時間，及其係藉著該壓力容器 中之壓力調節。 於本發明方法之一較佳實施例中，在該加壓容器中將 氣態形式之觸媒加熱至攝氏3至80度以幫助該觸媒及該 沖洗氣體之接觸。 根據本發明方法之另一較佳實施例，該觸媒在以氣態 形式供給至該壓力容器之前係以液體形式引導至計量波 紋管。使用該計量波紋管係有利的，因為雖然在該觸媒由 該液體變換至氣態形式期間將由環境擷取熱量，當與其他 運送設備比較時，該計量波紋管仍能在操作期間繼續起作 用。其特別有利的是該計量波紋管能以一相當簡單之方式 安裝，因為較舊之型芯或鑄模生產工廠可改裝成使用本發 明方法之實施例。 根據本發明方法之另一較佳實施例，使用三曱基胺當 作觸媒，及其有利的是當使用三甲基胺時，觸媒量用的較 少，因為當型芯隨後在使用之前儲存時可大量地避免來自 惡臭之令人厭惡氣味。 根據本發明方法之另一較佳實施例，在觸媒及沖洗氣 體之混合物已由該壓力容器導入該心型吹射機之後，額外 之沖洗氣體係經由該壓力容器給入該心型吹射機。該措施 -6- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------'--I--£'--衣--------„--訂--------·線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 A7 _B7_：_ 五、發明說明（5 ) 具有附加之優點為其導致該心型吹射機及該型芯或鑄模 之沖洗，及顯著地減少由於來自該觸媒惡臭之任何令人厭 惡氣味。 根據本發明之進一步特徵，提供用於供應最適量觸媒 至一用於製造模鑄製程之型芯或鑄模之心型吹射機之設 備，其包含一用於容納該觸媒之加壓容器（11)、用於決定 該加壓容器中觸媒量之裝置（12)、用於引導該觸媒至一導 管（19)俾能供應該觸媒至一心型吹射機之裝置（14)、及用 於供應一沖洗氣體至該設備之裝置（16，17)，其特徵為該 設備亦具有一位於該加壓容器（11)及該供應導管（19)之 間及連接至該二者之壓力容器（15)，且該沖洗氣體供應裝 置（16)係連接至該壓力容器（15)。 若想要時，該設備亦可具有一用於加熱該加壓容器中 觸媒之加熱器。 當該加壓容器中之觸媒呈氣態形式時，此設備可適 用。當該加壓容器中之觸媒呈液體形式時，該設備可具有 位於該加壓容器及該壓力容器間之計量波紋管，以致該觸 媒可在給入該壓力容器之前轉變成氣態形式。 圖式說明： 本發明係說明於所附圖面中，其中： 第1圖概要地顯示藉著一習知方法生產鑄模型芯之 設備，其中一觸媒係暴露至沖洗空氣； 第2圖概要地顯示根據本發明之設備，使用本發明之 方法供應最適量觸媒至一心型吹射機；及 -7- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------^4·--I ^訂---------I : ~r (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 A7 五、發明獅（6 ) "— '—-- 方二::要地顯示根據本發明之設備，使用本發明之 万去供應最適量觸媒至一 之形式使用。 t人射機，其中該觸媒以液體 詳細說明： 參考第1圖觸媒係容納在可能為_簡單氣瓶之加 =1)中，及該加壓容器⑴係位於量重器⑵上以便 、疋/、谷里可藉著加熱器（3)加熱該加壓容器（1)。於生 產—型芯或鑄模時，該觸媒係引導經過一閥門⑷而直接 導至6亥、型吹射機（未顯示）之供應導管⑸。一沖洗氣體 係經過導管⑹直接導入該供應導管⑸。隨著該加麼容器 ⑴中壓力之減少，抵達供應導管⑸之觸媒量亦減少。再 者，為了防止該沖洗氣體經過打開的閥門導入該加壓 容器（1)内，該導管（6)中所選擇用於該沖洗氣體之壓力不 旎太大。因此該供應導管中所存在之壓力不足以於所 想要之短時間内引導觸媒量經過該心型吹射機。 參考第2圖，一觸媒係容納在可能為一簡單氣瓶之加 壓容器（11)中，及該加壓容器（11)係位於量重器（12)上以 便測定其容量。可藉著加熱器（13)加熱該加壓容器（I〗）。 事先決定之最佳觸媒量係經由第一閥門（14)導入壓力容 益（15)，然後關閉第一閥門（14)。沖洗氣體係經由第二閥 門（17)經過導管（16)在〇. 1至1〇巴（bar)之壓力下供應至 該壓力容器（15)。然後關上第二閥門（π)及打開第三閥門 (18) ’以致將存在於該壓力容器（15)中之觸媒及沖洗氣體 之混合物導入供應導管（19)及導入該心型吹射機（未顯 -8- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 一 r--^--------- ---------線- f請先閱讀背面之注意事項再填寫本頁}Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (1) The present invention relates to a method and equipment for supplying the optimum amount of catalyst to a single-heart blower, which is used to manufacture the mold casting process The core and the mold, wherein the catalyst is obtained in a liquid or gas form from a pressurized container, and is mixed with a flushing gas before it is introduced into the heart-shaped blower. BACKGROUND OF THE INVENTION: We know methods for making cores for die casting processes. The application of using amines as catalysts to make cores according to the amino osmium ester cold-box core making method is described in the special issue of Giesserei 78 (1991) Vol. 11, pages 372-374. In this conventional method of core and mold production, a molding material containing benzyl ether resin (orthophenol resol) and an isocyanate is used, and a third amine is used to contact the mold material. Media curing. Because the catalytic effect of amines is particularly favorable in the gas phase, trimethylamine (TMA) with a boiling point of about 3 ° C is used for testing, and for this reason, gaseous amines can be cured in a relatively simple manner. The acceleration effect of obtaining a third amine by forming a transition reaction compound during the polyurethane reaction is described by the following reaction equation: -RN = C = 0 + (CH3) 3N ^ -RN = C-0 (-} \ Isocyanate TMA N (+) (CH3) 3 -RN = C-0㈠ + (OH) -R'-OH — -RN (H) -C = 0 + N (CH3) 3 \ \ N (+) (CH3 ) 3 or, -oh Polyol polyurethane when manufacturing cores by this conventional method, has the disadvantage that the third amine is supplied to the heart-shaped ejector in a relatively large amount. Although three have been shown Methyl-3- This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) menu: 87177 --------------- '' clothing --- -, --- „— Order · --------_ (Please read the Note 背面 on the back and then fill in this page) V. Description of the invention (2) = The material should be compared with other amines It may be possible to reduce the amount of ammonium by 5%, and the application of 5% of trimethylamine has its attendant disadvantages. —The problem ^ The extremely offensive pure smell produced by the stench, which makes it necessary to use 〇 ^ ^ All parts are absolutely leak-proof. All piping systems in the place must be isolated at a considerable cost. Economy One method of printing and manufacturing mold cores for employees of the Intellectual Property Bureau's consumer cooperatives is described in German DE No. 706472. 8 patent, in which gaseous trimethylamine is guided through the parts of a measuring device 'and pure It is guided into the heart-shaped blower at a concentration of 0.01 to 0.12 weight percent of the amount of molding sand used per core, and is in contact with the molding sand there. According to one of the methods, it is preferably implemented. For example, it is proposed that the gaseous trimethylamine be exposed to a flushing gas. Generally speaking, according to the method described in the German DE 1_472.8 patent, it is proposed to remove the trimethylamine from a dust collection container and through a catheter Guide the trimethylamine to the heart-shaped ejector. A connector is located in the conduit for the flushing gas, and the flushing gas contacts the catalyst in this way. However, it is disadvantageous when using this method, because As a result of the pressure reduction in the pressurized container, the amount of catalyst guided to the heart-shaped blower is reduced. Therefore, it is impossible to increase and / or set one of the optimal amounts of catalyst. Furthermore, it is disadvantageous in the catalyst and flushing A mixture of gases leads to the heart The pressure of the type blower is relatively low, so it is impossible to guide the mixture of catalyst and flushing gas to the heart-shaped blower at the desired speed. SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a Method for adding the most appropriate amount of catalyst to a core or mold core blower for the mold casting process and * 4- This paper size is applicable to China National Standard (CNS) A4 (210x297 mm), invention description ( 3) Equipment 'which ensures that the heart-shaped ejector is able to obtain the optimum amount of catalyst in the shortest possible time. According to the present invention, a method for supplying an optimum amount of catalyst to a heart-shaped blower is used to manufacture a mold or a prayer mold for a mold casting process, in which a catalyst is taken out from a pressurized container 以 in a liquid or gas form, And mixed with the flushing gas before it is introduced into the heart-shaped blower, which is characterized by firstly an optimum amount of catalyst and secondly the flushing gas is supplied into a pressure vessel at a pressure of G.1 to 10 bar ( 15), the catalyst and the flushing gas system are mixed in the pressure vessel (15), and the formed mixture is introduced into the heart-shaped ejector. The term "heart blower" as used herein encompasses the equipment or equipment used in the foundry to manufacture molds for the mold casting process. The catalyst may be, for example, a third amine (such as trimethylamine), Methyl formate, sulfur dioxide, or carbon dioxide. This method is particularly useful for producing cores or molds using phenylene ether resin and isocyanate and a third amine such as triethylamine as catalysts. For example, it can be used as a cylinder to contain the Pressurized container for catalyst. Usually air is used as the flushing gas, but other gases such as carbon dioxide can also be used. The flushing gas is supplied to the pressure vessel at 0.1 to 10 bar so that it can be used at a pressure of 0.1 to 1 The pressure in the pressure vessel is adjusted within a range of 10 bar. It is advantageous to supply the catalyst through a valve. The optimum amount of catalyst is determined by the size of the core or mold produced by Gua, and based on the specific core or mold. Various parameters of the mold are determined in advance. Surprisingly, it has been shown that in the method of supplying the optimum amount of catalyst to a single-heart blower according to the present invention, it can be used in an advantageous manner at the best time of the Ministry of Economic Affairs intellectual property. Printed by employee consumer cooperative A7 _B7__ V. Description of the invention (4) Guide the optimal amount of catalyst through the heart-shaped blower. The relationship between the amount of catalyst and the amount of reed flushing gas can be adjusted to 1: 1000 and 1: 10000. Time and keep the same, and at the same time let the mixture of the two flow through the heart-shaped blower. In this way, adverse changes in pressure can be avoided. The optimal time is that the mixture completely flows through the heart-shaped blower. The shortest time required, and it is adjusted by the pressure in the pressure vessel. In a preferred embodiment of the method of the present invention, the gaseous catalyst is heated in the pressurized vessel to a temperature of 3 to 80 degrees Celsius. Aids the catalyst in contact with the flushing gas. According to another preferred embodiment of the method of the invention, the catalyst is guided to the metering bellows in liquid form before being supplied to the pressure vessel in gaseous form. Use the metering bellows The piping system is advantageous because although the heat will be captured by the environment during the transition of the catalyst from the liquid to the gaseous form, the metering bellows will continue to function during operation when compared to other transport equipment. It is particularly advantageous that the metering bellows can be installed in a relatively simple manner, since older core or mold production plants can be retrofitted to embodiments using the method of the present invention. According to another preferred embodiment of the method of the present invention, Trimethylamine is used as a catalyst, and it is advantageous that when trimethylamine is used, the amount of catalyst is less, because when the core is subsequently stored before use, it can largely avoid the odor caused by malodor. Aversion to odor. According to another preferred embodiment of the method of the present invention, after a mixture of catalyst and flushing gas has been introduced from the pressure vessel into the heart-shaped blower, an additional flushing gas system is fed into the heart through the pressure vessel. -Type blower. This measure-6- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -------'-- I-- £ '-Cloth --- ----- „-Order -------- · Line (Please read the notes on the back before filling this page) Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _B7 _: _ V. Description of the Invention (5) It has the additional advantage that it leads to the flushing of the heart-type blower and the core or mold, Cause any significant reduction of malodorous odor due aversion from the catalyst. According to a further feature of the present invention, there is provided an apparatus for supplying an optimum amount of catalyst to a core or a core-type injection machine for manufacturing a mold casting process, comprising a pressurized container for containing the catalyst (11) A device for determining the amount of catalyst in the pressurized container (12), a device for guiding the catalyst to a conduit (19), a device capable of supplying the catalyst to a heart-shaped blower (14) And a device (16, 17) for supplying a flushing gas to the device, characterized in that the device also has a connection between the pressurized container (11) and the supply duct (19) and connected to both A pressure vessel (15), and the flushing gas supply device (16) is connected to the pressure vessel (15). If desired, the device may also have a heater for heating the catalyst in the pressurized container. This device is applicable when the catalyst in the pressurized container is in a gaseous form. When the catalyst in the pressurized container is in a liquid form, the device may have a metering bellows between the pressurized container and the pressure container, so that the catalyst can be transformed into a gaseous form before being fed into the pressure container. Description of the drawings: The present invention is illustrated in the attached drawings, in which: FIG. 1 schematically shows a device for producing a mold core by a conventional method, in which a catalyst is exposed to flushing air; FIG. 2 outlines It shows that the device according to the present invention uses the method of the present invention to supply the optimum amount of catalyst to a single-heart type blower; and -7- this paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm)- ------------ ^ 4 · --I ^ Order --------- I: ~ r (Please read the notes on the back before filling this page) Ministry of Economic Affairs Intellectual Property Printed by the Consumer Cooperative of the Bureau A7 V. Invention Lion (6) " —'---- Party 2 :: It is necessary to show the device according to the present invention and use the present invention to supply the optimum amount of catalyst to one form . The t-shooter, in which the catalyst is explained in detail with reference to the liquid: Refer to Fig. 1. The catalyst is housed in a _ simple gas cylinder plus = 1), and the pressurized container ⑴ is located on the weighing machine 以便 so that The pressure vessel (1) can be heated by the heater (3) in the 疋 / 疋. During the production of the core or mold, the catalyst is guided through a valve ⑷ and directly to the supply duct 6 of a 60mm blow molder (not shown). A flushing gas is directed into the supply duct 经过 through the duct ⑹. As the pressure in the container ⑴ decreases, so does the amount of catalyst reaching the supply conduit ⑸. Furthermore, in order to prevent the flushing gas from being introduced into the pressurized container (1) through the opened valve, the pressure selected for the flushing gas in the conduit (6) is not too great. Therefore, the pressure existing in the supply duct is insufficient to guide the catalyst amount through the heart-shaped ejector in a short time as desired. Referring to Figure 2, a catalyst is contained in a pressurized container (11), which may be a simple gas cylinder, and the pressurized container (11) is located on a weighing machine (12) to determine its capacity. The pressurized container (I) can be heated by a heater (13). The optimal catalyst amount determined in advance is to introduce the pressure benefit (15) through the first valve (14), and then close the first valve (14). The flushing gas system is supplied to the pressure vessel (15) through a second valve (17) through a conduit (16) at a pressure of 0.1 to 10 bar. Then close the second valve (π) and open the third valve (18) 'so that the mixture of catalyst and flushing gas existing in the pressure vessel (15) is introduced into the supply duct (19) and into the heart-shaped blower (Not shown -8- This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm)) r-^ --------- --------- line- fPlease read the notes on the back before filling in this page}
I A7 合物係經由供應導管（19)引導至 示） 398075 五、發明說明（7 ) 示）假如吻要時，為了大量消除由於來自該觸媒惡臭之 令人厭惡氣味’可保持第二閥門(17)打開同時打開第三闕 門（18) ’使得在觸媒及沖洗氣體之混合物已通入該心楚吹 射機之後，沖洗氣體將經過壓力容器（15)持續導入該心型 吹射機。 第3圖顯示類似第2圖中所示之設備，但該設備亦具 有汁里波紋管（20)、位於第一閥門（14)及壓力容器（15)間 之第四閥門（21 )，及無任何加熱器。當使用該設備時，該 加壓谷益（11)中之液態觸媒係引導經過第一閥門（14)進 入該計量波紋管（20)，在此該觸媒係由液態轉變至氣態。 然後關上第一閥門（14)及打開第四閥門（21)，及該氣態之 最佳觸媒量係導入該壓力容器（15)，此時該第二閥門（17) 及該第三閥門（18)保持關閉。在該第四閥門（21)已關上之 後’打開該第二閥門（17)及沖洗空氣係導入壓力容器 (15)。然後打開該第三閥門（18)及該觸媒及沖洗氣體之混 型吹射機（未顯 (請先閱讀背面之注意^-'項再填寫本頁) '衣· -------^ I 訂·------I I \ 經濟部智慧財產局員工消費合作社印製 -9- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 336075 五、發明說明（8 ) 主要元件符號說明: 1 加壓容器 2 量重器 3 加熱器 4 閥門 5 導管 6 導管 11 加壓容器 12 量重器 13 加熱器 14 第一閥門 15 壓力容器 16 導管 17 第二閥門 18 第三閥門 19 導管 20 計量波紋管 21 第四閥門 -------.------，衣----'---^—訂-------—線 * : :. (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）I A7 compound is guided to the supply via the supply duct (19)) 398075 V. Description of the invention (7) (shown) If kissed, in order to eliminate a lot of the offensive odor due to the odor from the catalyst, the second valve can be maintained (17) Open and open the third door (18) 'so that after the mixture of catalyst and flushing gas has passed through the heart blower, the flushing gas will be continuously introduced into the heart blower through the pressure vessel (15) machine. Figure 3 shows a device similar to that shown in Figure 2, but it also has a bellows (20), a fourth valve (21) between the first valve (14) and the pressure vessel (15), and Without any heater. When using the device, the liquid catalyst in the pressurized valley benefit (11) is guided through the first valve (14) into the metering bellows (20), where the catalyst system changes from liquid to gaseous. Then close the first valve (14) and open the fourth valve (21), and the optimal amount of catalyst in the gaseous state is introduced into the pressure vessel (15). At this time, the second valve (17) and the third valve ( 18) Keep closed. After the fourth valve (21) has been closed, the second valve (17) is opened and the flushing air is introduced into the pressure vessel (15). Then open the third valve (18) and the mixed injection machine of the catalyst and flushing gas (not shown (please read the note on the back ^-'before filling this page)' yi · ------ -^ I Order ------- II \ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-9- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Employees' Cooperatives 336075 5. Explanation of the invention (8) Symbols of main components: 1 Pressurized container 2 Weigher 3 Heater 4 Valve 5 Conduit 6 Conduit 11 Pressurized container 12 Weigher 13 Heater 14 First valve 15 Pressure vessel 16 Conduit 17 Second valve 18 Third valve 19 Conduit 20 Metering bellows 21 Fourth valve -------.------, clothing ----'--- ^-order -------— Line *::. (Please read the notes on the back before filling out this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm)