A6 B6 203114 五、發明説明（i) 1 本發明僳有_於_周流式液Ml泵，特別有_於在車輔 用内燃機中用來當作由燃料箱汲取如汽油等液驩燃料之燃 4 料泵使用的_周流式掖鼸泵〇 第6·至第8匾供顯示舆例如在日本特開昭6Θ - 79193 5 號公報所載之習知鬭周流式液錶泵同種類之泵的剖面·。 麵中1ΘΘ為泵组合讎；此组合讎1明供由具有泵基座1及泵羞 2组成之泵外筒11拟及蕖_3所構成。該蕖輸3供於該泵 外简110内以可旋轉方式受支撑着。該葉輪3在外周鏢部具 有UK溝部3A且該蕖輪3你以可繞其自身之中心_相對於 13 泵组合鍾1明ϋ轉之方式被_ 4支撑著。 泵组合讎1明界定出沿葉輪3之外周鐮部延伸之圏弧帶 狀的泵流路5以及於此泵流路之兩纗部颶口的吸入口 2Α和 排出口 1Α ;在泵流路5中容纳藥輪3之藥h溝部3Α〇又， 泵流路5像由設於泵基座1及泵蓋2之凹部IB、2Β構成， 15 排出口 1Α設於杲基座1侧，吸入口 2Α則設於泵蓋2側〇 在泵流路5中，於吸入口 2Α侧的低壓部份形成有泵流 路斷面積增大的鼷弧狀之擴大流路部5Α ,其像由吸入口 2Α 两始具有既定長度。於此擴大流路部5Α之末钃的反吸入供 設有流路斷面積缩小的台陏部5Β。由此台陏華5Β至排出口 2Ϊ 1Α設有泵流路断面稹較鑛大流路部5Α小之泵流路的离壓部 份。又，連接泵流路5内及泵组合讎100外之小孔狀的排氣 孔2C你設於擴大流路部5Α内且鄰接台陏部5 Β。 連接泵组合《 1明之霣動檐10之回轉子11的麯41之兩端 部你藉由麯承12、13以可旋轉方式支撑著。泵组合鼸1_ 甲 4(210X 297公沒） • ......................................(............裝.............................訂...........^ ...............綠 (請先聞讀背面之注意事項再填寫本頁) A6 B6 203114 五、發明说明（2 > 端蓋14你藉由霣動機10的範15互相連接。纗綦14處设有用 以输送至引擎等（未鼷示）之泵嫌出口 1从。蘸15界定出其 内部收容有轉子11之液黼室16,液讎室16供用來貯存由泵 组合讎1明與纗綦14間之_出口 1A所排出之液燃料，液髓 室16内部具有作為固定子的永久磁鐵17,以及》接於轉子 11的整流子18之供《用«刷19 0 其次，說明其動作。在具有上述结構的周流式液讎 泵中，藉由霣動機10騣動葉輪3使其沿第7·之順時針方 向旋轉，進而使液髓燃料等之液腥由吸入口 2A被吸至泵流 10 路5之一纗部。而此液鐮再藉由泵流路5内之离速回轉之 蕖輪的葉Μ根溝部3A所産生之流臁摩擦阻力而升离壓力， 進而沿第7鼷所示之順時針方向流經泵流路5,然後由其 另一端部的排出口 1Α流至液鏵室16。當液臞流出之際，於 泵流路5内，窠輪的藥Η稂溝部3Α輿液龌之接_面所産生 15 之燃料蒸氣會形成氣泡狀氣鼸，_由設在鄰接於擴大流路 部内的台階部5Β的排氣孔2C,将該氣龌排出至泵組合豔1明 之外。 在用作為燃料泵的國周流式液鼸泵中，若燃料蒸氣所 生的氣泡産生於泵流路而滞背於泵流路，則産生所諝的氣 28 鎖現象（Vapor* Lock ),妨礙液鼸燃料之流動，而有使泵之 功用顯著降低之虞。有鑑於此問題，習知圃周流式液體泵 在泵羞上具有使泵流路的中間部份連通至泵组合觼外的排 氣孔，藉由此排氣孔將産生於泵流路内之燃料蒸氣所造成 的氣泡狀氣體排出至泵流路外。然而，由於排氣孔是設於 甲 4(210X297公沒） {請先聞讀背面之注意本項再填寫本页) .裝. •訂. .線. A6 B6 203114 五、發明说明（3 ) 擴大流路部内之底面部，液鼸摩擦力無法充分傳逢，泵流 路内之葉輪之葉Μ溝部和液鼸的接鼸面所産生氣泡，會由 « 於逋心力及與液讎的比重差而流聚於泵流路之内馬部的蕖 _附近，液鼸摩擦咀力因而越來越小。因而，無法將泵流 路底面部附近之液鼸及氣豔排出泵组合讎外，而有發生氣 鎖現象之虡。 ， 本發明之目的在於供為了解決上逑間題酤而提供一種 改良之鼷届流式液鎌泵，本發明之_周流式液鼸泵可經由 泵流路確實地将産生於泵流路内的燃料蒸氣所迪成之氣泡 10 狀氣豔排出至泵组合讎外，而無發生氣鎮現象之虞。 本發明之圓周流式液豔泵具有葉輪及泵组合讎^該藥 輪於外周錁部具有蕖Η溝部，該泵组合臞係由泵基座、泵 蓋及泵外«構成，该泵外殼以可旋轉方式支撺箸該集輪， 同時沿該葉輪的外周缲部延伸形成有鼷弧箝狀之泵流路， 151 又，該泵外毅在上述泵流路之一端部設置吸入口，另一網 部設置拂出口。在該蕖輪和泵蓋的滑動面之泵流路附近， 設羞有連接至泵外的複數儀排氣口。 依雄本發明之鼷周流式液鼸泵，當其泵流路内的葉_ 之藥Μ溝部和燃料液讎的接觸面處由於燃料蒸發而産生氣 2d 泡狀的氣釀時，該氣鼸很容易聚集於泵流路的内周钿。因 而，上述氣體會自蕖翰和泵Μ之滑動面的缝陳，經由排氣 孔被排出泵流路外。因為此時有複數餹排氣孔，第一排氣 孔未排出之《鼸（氣泡）或在第一排氣孔下部産生之氣Β ,會依次由第二、第三排氣孔排出〇 -5 - 甲 4(210X297 公发) ................................................¾.......................”.............tr...........{ ...............^ (請先聞讀背面之注意事項再填寫本页) οςΛ Λ 66 Λπ 5 10 15 經濟部4標準局β工消伢合作社印製 五 、發明説明 • ( Ο 以 下 » 就 鼷 式 說 明 本 發 明 之 一 實 泥 例 〇 第 一 至 第 三 為 本 發 明 之 國 周 流 式 液 黼 泵 之 一 實 施 例 的 斷 面 圔 〇 圃 中 9 100^ 泵 組 合 臞 〇 該 组 合 覼 1嶋 由 以 泵 基 座 1 和 泵 蓋 2 構 成 之 泵 外 教 110, 以 及 於 該 泵 外 毅 11½ 内 部 以 可 旋 轉 方 式 被 支 持 箸 的 蕖 輪 3 所 構 成 〇 蕖 輪 3 於 外 屑 m 部 設 有 葉 Η 溝 部 3A 此 葉 輪 3 係 藉 由 軸 4 以 相 對 於 泵 組 合 腥 100^ 自 身 麯 線 旋 轉 之 方 式 被 支 持 着 〇 泵 组 合 龌 麵 定 出 沿 蕖 輪 3 之 外 周 緣 部 延 伸 之 成 圖 弧 箝 狀 的 泵 流 路 5 以 及 於 泵 流 路 之 兩 靖 部 開 P 的 吸 入 P 2A 和 揉 出 P 1A • 泵 流 路 5 内 容 纳 有 葉 _ 3 的 m Η 溝 部 3A 〇 又 9 泵 流 路 5 偽 由 設 於 泵 基 座 1 及 泵 羞 2 之 凹 部 1Β > 2B 所 組 成 » 其 中 排 出 □ 1Α 設 於 泵 基 座 1 倒 吸 入 π 2Α 則 設 於 泵 篕 2 側 〇 又 9 數 傾 排 氣 口 2D ·、 2E > 2F 沿 上 述 泵 流 路 5 在 泵 蓋 2 之 葉 輪 滑 動 面 2Η 上 連 通 至 泵 外 〇 又 » 白 排 氣 □ 2D \ 2E 2F 之 位 置 朝 泵 流 路 5 之 方 向 設 有 一 繞 行 — 周 之 小 之 傾 斜 面 2G 〇 該 傾 斜 面 2G 上 形 成 有 對 液 鼸 具 有 大 的 阻 力 但 對 m 體 卻 幾 乎 不 具 阻 力 之 m 嫌 〇 亦 即 » 若 泵 外 殼 110的 外 觀 尺 寸 為 約 5Θ 公 簠 * 缝 嫌 尺 寸 為 20 3Θ 徵 米 〇 至 於 其 他 和 習 知 技 術 相 同 的 構 造 9 在 此 省 略 說 明 〇 又 t 該 傾 斜 面 2G 亦 可 設 於 m 輪 3 的 m 面 9 也 可 以 由 m 動 面 2H 和 藥 输 3 的 俩 面 來 形 成 〇 在 具 有 上 述 结 構 的 01 周 流 式 液 黼 泵 中 9 葉 H 3 藉 由 動 機 10 沿 第 2 _ 順 時 針 方 向 被 驅 動 旋 轉 f 藉 此 > 液 釅 燃 料 之 液 臞 由 吸 入 Ρ 2A 被 吸 入 泵 流 路 5 之 — 端 部 • 此 液 鼸 沿 第 2 BB 之 順 時 針 方 向 流 經 泵 流 路 5 f 然 後 由 另 一 端 部 之 排 出 -6 - 本紙張尺度边用中a Η家楳準（CNS) Τ4規格（210X297公放） 66 ΛΠ 五、發明説明δ ) 5 口 1A流出至液讎室16 0於産生泵作用時，在泵流路5内之 藥輪3的葉Μ溝部3A與燃料之液讎的接觸面«，産生之燃 料蒸氣所迪成之氣泡狀氣醴»由離心力及舆液讎之比重差 而聚集滞留於泵流路5之内Μ部的藥轅附近。此時，因氣 泡狀氣鼸被推向内周方向亦邸葉輪3和泵蓊2之潸動面2Η 铒，僅有氣泡自清動面2Η的小縫嫌經由排氣口很有效率地 被排出。又，第一排氣口 2D未排出之氣泡或在第1排氣口 2D之下流産生之氣泡會自第2、第3之排氣口 2Ε、2F抹出 Ο 10 第2實施例 15 以下說明本發明之第二實施例。如第5圈像將第4園 之傾斜面2G改成極小的陏梯2G〇該鷗梯2G僳沿泵流路5成 箝狀設置，同時沿該泵流路5在陏梯部分的底面設置連通 至泵外的禊數鵪排氣口 2D、2E、2F。又，該階段2G亦可同 第一實施例一樣，設於葉輪3的钿面，或以滑動面2H和藥 輪3之铟面來形成。 第3實施例 經濟部標準局A工消仲合作杜印製 如第2·所示實施例你沿泵流路5之内供設有繞其全 周之棰小傾斜面2G,用以使傾斜面2G之加工容易。但因亦 形成於非泵流路5之部分，故泵效率會稍差。相對於此， 第3圓所示之實施例，只在吸入口 2A至排出口 1A之間沿泵 流路5的徑向内《I設有箝狀與第4鼷所示同樣之傾斜面2G ，因而與第1實施例（H2)相較，泵效率較佳。 第4實施例 本紙張又度边用中a Η家橒準（CNS)甲4規格（210X297公龙) 5 203114 Λ 6 116 10 15 經濟部準局CX工消费合作社印製 五、發明説明（6 ) 第4實施例與第2實施例類似，只在吸入口 2A至揉出 口 1A之間沿泵流路5的徑向内锢設有與第5_所示同樣之 帮狀鵰梯2G。 第5實施例 藉由控制葉翰3和潸動面2H之間的缝陳尺寸，邸使不 具有傾斜面2G或階梯2G,只要將連通至泵外的後數俪排氣 口 2D、2E、2F沿上逑泵流路5配設，亦能排出氣泡。 如上所述，依據本發明，因於泵流路内發生之氣泡狀 氣體聚集部份（亦即，泵蓋和葉翰之滑動面上〉設置複數 ®排氣口，故第一排氣口未排出之氣B (氣泡）或在第一 搛氣口下流産生之氣腥，會依次由第二、第三排氣口排出 。因此，能將於習知圔周流式液髓泵中未能排出而殘存之 氣驩（氣泡）有效地排出，不但無礙泵之功能且能確實地 避免氣錤現象。又，沿流路設置箝狀的撤小傾斜面或階梯 ,在該傾斜面或階梯部份的底面設有連通至泵外的理數痼 排氣口而能有效地將大量氣霾（氣泡）排出。 國式之簡單說明： 第1圔係顯示本發明之第一實施例至第五實施例之梁 剖斷視鼸； 第2圓偽頭示本發明之第1實施例或第2實施例之沿 第1围之A — A線的放大剖斷視鼷； 第3園僳顯示本發明之第3實施例或第4實施例的沿 第1 _之A - A線的放大剖斷視; 第4圈僳顯示本發明之第1實施例或第3實施例，亦 -8 * (請先_閲1,?背而之>i-意求項/1-项穷本11 裝· 線， 本紙張尺度边用中a B家樣準(CNS) T4規怙（210X297公龙) 5 Λ 6 Η6 03114 五、發明説明（7) 邸，於第1實施例中僳沿第2_之B-B線，於第3實施 例傈沿第3黼之B — B線的放大剖斷視«> 第45·傜顯示本發明之第2實施例或第4實施例，亦 即於第2實施例中像沿第2_之Β-Β線，於第4實施例 像沿第3·之Β—Β線的放大剖斷視_。 第6麵僳習知的Η周流式液讎泵的縱剖斷視圈。 第7·你沿第6_之C—C線的放大剖斷視画。 第8鼷僳沿第7圔之D~D線的放大剖斷視圈。 (請先閲讀背而之注意苹項孙填寫本頁) 10 15 經濟部中央櫺準局貝工消伢合作杜印製 符號說明： 1泵基座 1Α排出口 2泵蓋 2Α吸入口 2D排氣口 2Ε排氣口 2F排氣口 2G傾斜面、階梯 3蕖轅 5泵流路 14Α 泵排出口 1明泵組合鼸 110 泵外毅 裝· 線. 本紙張尺度边用中B Η家標準(CNS)T4規格（210x297公Λ)A6 B6 203114 V. Description of the invention (i) 1 The present invention has _ 于 _ circulating fluid Ml pumps, especially _ used in vehicle auxiliary internal combustion engines to be used as fuel from the fuel tank to draw liquid fuel such as gasoline 4 fuel pumps _ Peripheral-type Yelu pump 〇 6th to 8th plaque for the display of public knowledge such as the Japanese JP Sho 6Θ-79193 No. 5 published in the conventional 鬭 peripheral liquid meter pump of the same type The section of the pump. In the face, 1ΘΘ is a pump combination; this combination is made up of a pump outer cylinder 11 consisting of a pump base 1 and a pump 2 and a pump_3. The pump 3 is supplied in the pump housing 110 to be rotatably supported. The impeller 3 has a UK groove 3A in the outer dart portion and the yoke wheel 3 is supported _4 in such a way that it can rotate around its center _ with respect to the 13 pump combination clock 1 Ming. The pump assembly 1 clearly defines the pump flow path 5 in the shape of an arc band extending along the outer peripheral sickle of the impeller 3 and the suction port 2Α and the discharge port 1Α at the two hurricanes of the pump flow path; in the pump flow path 5 The groove d 3Α which contains the medicine wheel 3 of the medicine wheel 3, the pump flow path 5 is constituted by the recesses IB and 2B provided in the pump base 1 and the pump cover 2, and the 15 discharge port 1A is provided on the side of the base 1 to inhale The port 2Α is provided on the side of the pump cover 2. In the pump flow path 5, a low-pressure portion on the suction port 2Α side is formed with an enlarged arc-shaped enlarged flow path portion 5Α with an increased cross-sectional area of the pump flow path. The mouth 2Α has a predetermined length. Here, the back suction of the end of the enlarged flow path portion 5A is provided with a platform portion 5B whose flow path cross-sectional area is reduced. From this, Taihua 5B to the discharge port 2Ϊ 1Α is provided with a pressure-removing part of the pump flow path of which the cross section of the pump flow path is smaller than that of the large flow path portion 5Α of the mine. Further, a small hole-shaped exhaust hole 2C connecting the inside of the pump flow path 5 and the outside of the pump assembly 100 is provided in the enlarged flow path portion 5A and is adjacent to the platform portion 5B. The two ends of the curve 41 of the rotor 11 connected to the pump assembly "1 Ming dynasty eaves 10" are rotatably supported by the curve bearings 12,13. Pump combination 鼸 1_ A4 (210X 297 male) • ........................................... .................................................. Order ... ...... ^ ............... green (please read the precautions on the back before filling in this page) A6 B6 203114 V. Description of the invention (2 > end cover 14 You are connected to each other by the fan 15 of the engine 10. The qiqi 14 is provided with a pump outlet 1 for delivery to the engine etc. (not shown). The dipping 15 defines the liquid chamber containing the rotor 11 inside 16. The liquid chamber 16 is used to store the liquid fuel discharged by the _ outlet 1A between the pump assembly 1 and the pump 14. The liquid chamber 16 has a permanent magnet 17 as a stator, and is connected to the rotor 11 The commutator 18 is provided with "Brush 19 0. Next, the operation will be described. In the circulation type liquid pump with the above structure, the impeller 3 is moved by the motive machine 10 in the clockwise direction of the 7th. Rotate, so that liquid fuel such as liquid pulp fuel is sucked from the suction port 2A to one of the parts of the pump flow 10 path 5. The liquid sickle is then passed through the leaf of the rotator wheel in the pump flow path 5 rotating at a speed The frictional resistance caused by the flow of the root groove 3A and The pressure rises, and then flows through the pump flow path 5 in the clockwise direction as shown in the seventh line, and then flows to the liquid chamber 16 from the discharge port 1A at the other end. When the liquid flows out, the pump flow path Within 5, the connection of the medicine groove of the rim wheel 3A and the connection of the liquid squash_ The fuel vapor generated at the surface 15 will form a bubble-like gas ridge, by the exhaust hole 2C provided in the step portion 5B adjacent to the enlarged flow path portion , Discharge the air vent to the outside of the pump assembly. In the national peripheral flow liquid mule pump used as a fuel pump, if bubbles generated by fuel vapor are generated in the pump flow path and stagnate in the pump flow path, then Vapor * Lock is produced, which hinders the flow of liquid eluent fuel and may significantly reduce the function of the pump. In view of this problem, the conventional circulating liquid pump has a pump on the pump. The middle part of the flow path is connected to the exhaust hole outside the pump assembly, through which the bubble-like gas caused by the fuel vapor generated in the pump flow path is discharged to the outside of the pump flow path. However, due to the exhaust The stomata is located in A4 (210X297). (Please read the note on the back before filling this page). Install. Set.. Line. A6 B6 203114 V. Description of the invention (3) Enlarge the bottom part of the flow path, the friction force of the liquid mule cannot be fully communicated, the groove of the impeller blade M in the pump flow path and the connection surface of the liquid mule Bubbles are generated, which will accumulate in the vicinity of the horse in the pump flow path due to the difference in gravity and the specific gravity of the liquid, and the force of the liquid friction friction nozzle will become smaller and smaller. Therefore, the pump flow path cannot be The liquid mule near the bottom part and the airy discharge pump are out of the pump combination, and there is a phenomenon of air lock. The purpose of the present invention is to provide an improved liquid-phase liquid sickle pump in order to solve the above problems. The _circular liquid liquid pump of the present invention can be reliably generated in the pump flow path through the pump flow path The bubbles 10 formed by the fuel vapor inside are discharged to the outside of the pump assembly without any risk of gas ballast. The circumferential flow type liquid pump of the present invention has an impeller and a pump combination. The medicine wheel has a groove at the outer periphery. The pump combination consists of a pump base, a pump cover, and a pump exterior. The collecting wheel is supported in a rotatable manner, and at the same time, a pump flow path in the shape of an arc is formed along the outer circumference of the impeller. In addition, the pump has a suction port at one end of the pump flow path, and another A network department is equipped with a whisk outlet. In the vicinity of the pump flow path on the sliding surfaces of the locating wheel and the pump cover, there is a discharge port of the plural meter connected to the outside of the pump. According to the periodic liquid liquid pump of the present invention, when the contact surface between the leaf groove of the pump and the fuel liquid in the pump flow path generates gas due to fuel evaporation, the gas is produced in 2d bubbles. Emulsions can easily collect on the inner periphery of the pump flow path. Therefore, the above-mentioned gas will be discharged out of the pump flow path through the exhaust hole from the gap between the sliding surface of the pump and the pump M. Because there are a plurality of vent holes at this time, the "e (bubble)" or the gas B generated at the lower part of the first vent hole that is not discharged from the first vent hole will be discharged from the second and third vent holes in sequence. 5-A 4 (210X297 public) ................................................... ....... ¾ ......................... "" ............ tr .... ....... {............... ^ (Please read the precautions on the back before filling out this page) οςΛ Λ 66 Λπ 5 10 15 4 Bureau of Standards, Ministry of Economic Affairs Printed by the β Gongxiao Cooperative Society V. Description of the invention • (Ο The following »Explain one example of the actual mud of the present invention in terms of the type of the first.圔 圔 〇 虔 中 9 100 ^ Pump combination 詞 〇 This combination consists of a pump base 1 consisting of a pump base 1 and a pump cover 2 and a pump rotatably supported inside the pump 11 ½ inside. The wheel 3 is constructed. The worm wheel 3 is provided with a leaf Η groove part 3A on the outer chip m part. The impeller 3 is driven by a shaft 4 It is supported in a manner that rotates 100 ^ with respect to the pump assembly's own curve. The pump assembly front surface defines the patterned arc-clamp-shaped pump flow path 5 and the pump flow path that extend along the outer periphery of the yoke 3 No. 2 Yasushibe opens P suction P 2A and rubs out P 1A • The pump flow path 5 contains the leaf_ 3 m Η ditch 3A 〇. 9 The pump flow path 5 is provided on the pump base 1 and the pump 2 The concave portion 1B > 2B is composed of »where the discharge □ 1Α is provided on the pump base 1 and the reverse suction π 2Α is provided on the side of the pump shaft 2 〇9 9 number tilt exhaust port 2D ·, 2E > 2F along the above pump flow path 5 Connected to the outside of the pump on the impeller sliding surface 2Η of the pump cover 2. The white exhaust □ 2D \ 2E 2F is provided with a detour to the direction of the pump flow path 5-a small inclined surface 2G of the circumference On the surface 2G, there is formed a m which has a large resistance to the liquid mule but has almost no resistance to the m body. The appearance size of the shell 110 is about 5Θ Gong *. The seam size is 20 3Θ. The other structure is the same as the conventional technology. 9 The description is omitted here. The inclined surface 2G can also be set at the m of the wheel 3. The surface 9 can also be formed by the two surfaces of the m moving surface 2H and the drug delivery 3. In the 01 circulation type liquid pump with the above structure, the 9-blade H 3 is driven and rotated in the 2 _ clockwise direction by the motive machine 10 f Take this> The liquid liquefaction of liquid fuel is sucked into Ρ 2A and is drawn into the pump flow path 5-the end • This liquid mule flows through the pump flow path 5 f in the clockwise direction of the 2 BB and then from the other end Discharge-6-This paper is used in the standard a 揳 楳 揳 (CNS) Τ4 specification (210X297 public) 66 ΛΠ V. Description of the invention δ) 5 1A outflow to the liquid chamber 16 0 when the pump action is generated, The contact surface between the leaf M groove 3A of the medicine wheel 3 in the pump flow path 5 and the liquid fuel of the fuel «is a gas bubble formed by the generated fuel vapor »Due to the difference in the centrifugal force and the specific gravity of the liquid, the drug will accumulate in the vicinity of the medicine cup in the M part of the pump flow path 5. At this time, because the bubble-like gas ram is pushed toward the inner circumferential direction of the impeller 3 and the pumping surface 2Η of the pump 2 erbium, only the small gap of the bubble from the cleaning surface 2Η is likely to be efficiently passed through the exhaust port discharge. In addition, bubbles not discharged from the first exhaust port 2D or bubbles generated downstream of the first exhaust port 2D are erased from the second and third exhaust ports 2E and 2F. 10 Second Embodiment 15 The following description The second embodiment of the present invention. For example, in the fifth circle, the inclined surface 2G of the fourth garden is changed into a very small ladder 2G. The gull ladder 2G is arranged along the pump flow path 5 in a pincer form, and at the same time, it is installed along the pump flow path 5 on the bottom surface of the ladder section It is connected to the exhaust ports 2D, 2E, 2F of the pump outside the pump. In this stage, 2G may be formed on the plutonium surface of the impeller 3 or the sliding surface 2H and the indium surface of the medicine wheel 3 as in the first embodiment. The third embodiment is made by the Ministry of Economic Affairs Standards Bureau A, Gongzhong, and Du Du. As shown in the second embodiment, you provide a small inclined surface 2G along the entire circumference of the pump flow path 5 to make it inclined Surface 2G is easy to process. However, since it is also formed in the non-pump flow path 5, the pump efficiency will be slightly worse. In contrast, in the embodiment shown in the third circle, only the radial direction of the pump flow path 5 between the suction port 2A and the discharge port 1A is provided with a slanted surface 2G similar to that shown in the fourth flange Therefore, compared with the first embodiment (H2), the pump efficiency is better. The fourth embodiment of this paper is used for the edge of the paper a 插 家 樒 准 (CNS) A 4 specifications (210X297 male dragon) 5 203114 Λ 6 116 10 15 Printed by the quasi-bureau of the Ministry of Economic Affairs CX industrial and consumer cooperatives V. Description of invention (6 ) The fourth embodiment is similar to the second embodiment, except that the engraved ladder 2G similar to that shown in FIG. 5_ is provided along the radial direction of the pump flow path 5 only between the suction port 2A and the kneading outlet 1A. In the fifth embodiment, by controlling the size of the gap between Ye Han 3 and the moving surface 2H, there is no inclined surface 2G or step 2G, as long as the rear vents 2D, 2E, 2F is arranged along the upper pump flow path 5 and can also discharge air bubbles. As described above, according to the present invention, since the bubble-like gas accumulation part (that is, the sliding surface of the pump cover and Ye Han) generated in the pump flow path is provided with a plurality of ® exhaust ports, the first exhaust port is not The exhaust gas B (bubble) or the gas generated downstream from the first air port will be discharged from the second and third exhaust ports in sequence. Therefore, it cannot be discharged from the Xizhi Circulation Liquid Marrow Pump The remaining gas bubbles (bubble) are effectively discharged, which not only does not hinder the function of the pump, but also can reliably avoid the phenomenon of gas galloping. In addition, a small inclined surface or step is set along the flow path to remove the small forceps. The bottom of the part is provided with an exhaust port connected to the outside of the pump, which can effectively discharge a large amount of haze (bubble). Brief description of the Chinese style: The first is the first to fifth embodiments of the present invention. The beam of the embodiment cuts off the eyeball; the second round pseudo-head shows the enlarged cutaway eyeball along the A-A line of the first circumference of the first or second embodiment of the invention; the third garden display book A magnified cross-sectional view of the third or fourth embodiment of the invention along the A-A line of the first _; circle 4 shows the present invention The first embodiment or the third embodiment, also -8 * (please first read _1, back to the top> i-desired item / 1-term poor copy 11 equipment · line, the paper size is in use a B home sample standard (CNS) T4 gauge (210X297 male dragon) 5 Λ 6 Η6 03114 V. Description of invention (7) Di, in the first embodiment, along the BB line 2_, in the third embodiment A magnified cross-sectional view of the B-B line along the third line «> Section 45 · Dai shows the second embodiment or the fourth embodiment of the present invention, that is, in the second embodiment, the image along the second Line B-B, in the fourth embodiment, is an enlarged cross-sectional view along line 3-B-B. The sixth section is a longitudinal section of the conventional H-circumferential liquid pump. Part 7 · Your enlarged view along the 6th line C-C. The 8th view along the 7th line D ~ D enlarged view circle. (Please read on the back and pay attention to the entry This page) 10 15 Explanation of the symbols printed by the cooperation between the Ministry of Economic Affairs and the Central Bureau of Fire Safety of the Ministry of Industry: 1 pump base 1Α discharge port 2 pump cover 2Α suction port 2D exhaust port 2E exhaust port 2F exhaust port 2G inclined 、 Step 3 詖 辕 5 Pump flow path 14Α Pump discharge port 1 Ming pump combination 鼸 110 Pump external decoration · line. This Zhang B Η neutralized with side dimensions of Standards (CNS) T4 size (210x297 Lambda male)