TW387509U - Gas guiding structure improvement of micro pump - Google Patents

Gas guiding structure improvement of micro pump Download PDF

Info

Publication number
TW387509U
TW387509U TW88208757U TW88208757U TW387509U TW 387509 U TW387509 U TW 387509U TW 88208757 U TW88208757 U TW 88208757U TW 88208757 U TW88208757 U TW 88208757U TW 387509 U TW387509 U TW 387509U
Authority
TW
Taiwan
Prior art keywords
gas
airbag
air
check valve
hole
Prior art date
Application number
TW88208757U
Other languages
Chinese (zh)
Inventor
Kuen-Lin Jang
Original Assignee
Jang Kuen Lin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jang Kuen Lin filed Critical Jang Kuen Lin
Priority to TW88208757U priority Critical patent/TW387509U/en
Publication of TW387509U publication Critical patent/TW387509U/en

Links

Landscapes

  • Reciprocating Pumps (AREA)

Description

五、創作說明ϋ) t技術領域】 本創作係關於一種 .一種藉由改考氣體 浦3 【先前技術】 以往習見之 位置執行進 置,才可以 而有不順暢 如同市面上 子,因為電V. Creation Instructions ϋ) Field of Technology] This creation is about a kind. One is by changing the examination of gas Pu 3 [Prior technology] Only when you perform an installation at a location that has been used in the past, can it be as smooth as the market, because electricity

微泵浦氣體導流結構改良,特別是關於 導流路徑而增加氣體流量穩定度之微泵 側加裝一止 泵浦内I造 由此可見* 者,而亟待 本案創作人 思加以改良 功研發完成 【新型目的 本創作之目 利用位置不 且出風量亦 本創作之次 良,在集氣 微泵浦 氣及出 達..到所 之情形 廣泛使 勤金邀 回裝置 成量測 上述微 加以_改 鑑於上 創新, 本件微 】 的即在 同的進 相對穩 僅能單純輸出 氣之任務,而 要求.之精度, 〇 闬“電動i藶 計使用習之微 ’方能使壓縮 誤差· 泵浦仍有諸多 良。 述習®擞泵浦 並經多年苦心 泵浦氣體導流 愿縮之空氣I或經由同一 且需另.行加裝一•止回裝 而氣.體也闼結構設計不良 計,便是一,很好的例 泵浦,所以必須在泵浦外· 空氣於高壓時不致回流於 缺失,.實非一良善之設計 所衍生的各項缺點*乃遂 孤詣潛心研究後,終於成 結構改良0 ό 於提供一種微泵浦氣體導流結構改艮, 氣處及出氣處,使氣體流量更為通順’ 定3 一目的係在於提供一種徵泵逾氣體導流鍺搆改 部所形成之氣室,透過流道將氣體導入後The micro-pump gas diversion structure is improved, especially regarding the diversion path to increase the stability of the gas flow. The installation of a stop pump inside the micro-pump can be seen *, and the creators of this case urgently need to improve the research and development Completion of the [new purpose] The purpose of this creative use is not only the air volume, but also the second best in this creative work. In the gas collection micropump pumping and delivery. The situation is widely used to make the Qinjin invite device to measure the micro _In view of the above innovations, this piece of micro] is a task that can only be used to output gas when it is relatively stable at the same time, and the accuracy is required. 〇 "The use of electric micrometers can make compression errors. Pump There is still a lot of goodness in the pump. Shu Xi 擞 pumps and air pumps that have been diligently pumped for many years have diligently pumped the air I or through the same and need to be installed separately. The installation of a non-return installation and the gas. Poor structural design The design is a good example of pumping, so it must be outside the pump. The air does not flow back when it is under high pressure. The shortcomings derived from a good design are not just good research. , Finally into a structural improvement0 ό In order to provide a micro-pumped gas diversion structure, the gas and gas outlets make the gas flow more smooth. The purpose is to provide a gas formed by the germanium structure modification department that pumps over the gas diversion. Chamber, after introducing gas through the flow channel

ΤΓΤΓ

第4.頁 五、剑作說明(2) 以均勻的將氣遨由氣餿輸出孔喷出,且防止氣體甴氣室应 漏的薄膜止回塾片能有效發揮其功效,阻隔氣體由流道反 向流入9 本創作之另一目的係,在於提供一種微泵浦氣體導流結構改 良’其中連動榫係設置在橫桿上,组裝時只需插入轉動部 之偏心料孔中,.在馬達運轉時使橫桿做左右按壓動作,達 詢省電以及降低噪音a · [技術内容】· 具有上述優點之本件微泵浦氣體導流結構改良.,包括有: 一馬達組件 '一壓縮部、一集氣部所組成,结合後的微泵 浦利用栓鎖元件由外部予以結合固定。; •其中,馬達組件包括有:·馬達本體、底座以及轉勤部,由 馬達本體延仲一凸轴,並穿過底座與轉動部套合,轉動部 並有設一偏心斜孔= 壓缩部包括有:橫桿、固持體以及壓縮室;由橫桴蜂伸出 一連動桿’而連動椁係以一偏移角度插入轉勤部偽心斜孔 中•.座縮室由氣嚢以及止回檔片以及防漏墊片所組成,以 :氣囊後方固定卡榫穿過固持體奐撗桿上卡槽亙相卡合,位 於固持體上與止回檔片相對應處並有第一止回城氣孔設 置。· |集氣部包括有:集氣室、與上述氣囊相對稱處之流道設 :計,流道外侧覆有薄膜止回墊月,作為第二止回闕之用, i以及連結上述第一止回閥氣孔與氣囊之導流槽,外側則有 |輸出氣體之氣體輸串孔。 31'創作說明(3) 【圖式簡單說明 =參閱以了 "本創作一較佳實施例之詳細說明及其 ’將可進^步瞭解本創作之技術内容及其目的功效:、有 關該實施例之附圖為: 圖一為本創作微泵浦氣體導流結構改良之立體分解祝圖; 圖二為该微泵浦氣體導流結構改良之馬遠組件组合示意 圆; © 圓三為該微泵浦氣體導流結構? 文良之麼縮部组令示意圖: 圓四為兹微泵浦氣艘導流結構改良之集氣部組合示意圊; 以及 圖五為該微泵浦氣體導瀹结耩改良之全元件組合圖。 【主要部分代表符號】 101馬連本體 103底座 1Q 5偏.心斜孔 20壓縮部. 202連動桿 204固持體 206固定卡榫 208壓縮室 21 0防漏墊片 301流道 303氣體輸出孔 40栓鎖元件 1 0馬達組件 10 2凸轴 104轉動部 1 06進軋口 201横椁 203卡槽 205第一止回閥氣孔. 20*7氟囊 209止回檔片 30集氣部 302薄膜止回整片 304導流槽Page 4. V. Sword Explanation (2) The thin film non-return cymbals that uniformly eject the air radon from the air radon output hole and prevent the gas radon chamber from leaking can effectively exert its effect and block the gas from flowing. Channel inflow 9 Another purpose of this creation is to provide a micro-pumped gas diversion structure improvement, in which the joint tenon is set on the crossbar, and only needs to be inserted into the eccentric hole of the rotating part during assembly. When the motor is running, make the crossbar press left and right to achieve power saving and reduce noise a. [Technical content] · The micro-pump gas diversion structure with the above advantages is improved. It includes: a motor assembly and a compression It is composed of a gas collecting part and a combined micro-pump, which are combined and fixed from the outside by a latching element. ; Among them, the motor assembly includes: The motor body, the base and the transfer section, which is extended by a convex shaft through the motor body and fits through the base and the rotating part. The rotating part also has an eccentric inclined hole = compression part Including: crossbar, holding body and compression chamber; a linkage rod is extended by the horizontal sting bee, and the linkage is inserted into the false heart oblique hole of the transfer department at an offset angle. The backstop piece and the leak-proof gasket are composed of: the fixed tenon on the rear of the airbag passes through the retaining groove on the yoke of the holder, and is located on the holder corresponding to the non-return stopper and has a first stop Back to city stomatal setting. · | The gas collection unit includes: the gas collection chamber and the flow path symmetric with the above airbag. The outside of the flow path is covered with a film check pad for the second check. A non-return valve air hole and a baffle guide groove, and the outer side is provided with a gas delivery hole for output gas. 31 'Creation explanation (3) [Schematic explanation = see the detailed description of a preferred embodiment of this creation and its' will be able to further understand the technical content of this creation and its purpose and efficacy :, about the The drawings of the embodiment are: Figure 1 is a three-dimensional exploded view of the improvement of the micro-pumped gas diversion structure of the creation; Micro-pumped gas diversion structure? Schematic diagram of Wenliang's shrinkage group order: Circle 4 is a schematic diagram of the gas collecting part combination of the improved micro-pumped gas guide structure of the vessel; [Representative symbols of main parts] 101 horse with body 103 base 1Q 5 eccentric. Center oblique hole 20 compression part. 202 linkage rod 204 holding body 206 fixed tenon 208 compression chamber 21 0 leak-proof gasket 301 flow channel 303 gas output hole 40 bolt Locking element 1 0 Motor assembly 10 2 Convex shaft 104 Rotating part 1 06 Inlet rolling port 201 Transverse 203 Card slot 205 First check valve air hole. 20 * 7 fluorine bladder 209 check baffle 30 air collection part 302 film check Whole piece 304 guide groove

第δ頁Page δ

S·、釗作說明(4) 【較佳實施例】 |請參聞圖一,本創作所提供之微泵浦氣體導流結構改良, 主要包括有一馬達組件10、一壓缩部2〇、一集氣部30所組 成,結合後的微泵浦利用栓鎖元件4〇由外部予以結合固' :定。 1 其•中,馬達組件10包括有:馬達本體1〇1、底座103以及轉 4部104,由·馬達體1〇1延伸一凸軸1〇2,並穿過底座1〇3 與轉動.部104套,合’轉動部1〇4並設有一偏心.斜孔105,在 側邊設有一進4· 口 106· 歷縮部20包括有♦·.横桿201、固持醴204以及壓缩室208 ; 由橫椁201廷伸出一速動桿2 Q2,而連動桿202铋以一偏移 角度插入轉動部偏心斜孔1〇5中,壓縮室由氣囊207以及止 回播爿以及防漏藝片210所組成,以氣囊2〇7後方固定卡榫 206穿過固持體與横桿上卡槽2〇》互相卡合·位於固持體上 與止回構爿209相對應處並有第一止回閥氣孔2〇 5設置。 :集氣部30包括有:導流槽3Q4,以凹陷方式設置在般體 ;中,連結第一此回閥氣孔2 Q5與氣囊207使其保持暢通,具 |有與丰述氣囊207相對稱處之流道3 〇1設計,流道3〇1外側 !覆有薄膜止回墊片302 *作為第二止回閥之用,以及連結 上述第一止回閥氣孔2fl5與氣囊207之導流槽,外側則有輸 出氣體之氣體輸出孔303 » 請參間圖二所示,馬達本體101與底座1〇3结合,凸軸並 穿過底座103與轉動部104套合,轉動部1〇4並設有一偏心 斜孔105,在側邊設有一進氣口 1〇6。馬達在通電後籍以轉S ·, Zhao Zuo's explanation (4) [Preferred embodiment] | Please refer to Figure 1. The micro-pump gas diversion structure improvement provided by this creation mainly includes a motor assembly 10, a compression section 20, a Composed of the gas collecting part 30, the combined micropump is combined with the outside by the latching element 40, and is fixed. 1 Among them, the motor assembly 10 includes: a motor body 101, a base 103, and a rotating part 104, and a convex shaft 102 is extended from the motor body 101 and passes through the base 103 and rotates. There are 104 sets of parts, which are combined with the rotating part 104 and an eccentricity. The inclined hole 105 is provided with an inlet 4 on the side. The port 106 is provided with a cross section 201, a holding rod 204, and a compression chamber. 208; A quick moving lever 2 Q2 is protruded from Yokohama 201 court, and the bismuth link 202 is inserted into the eccentric oblique hole 105 of the rotating part at an offset angle. It is composed of art piece 210. The fixed tenon 206 at the rear of the airbag 207 passes through the retaining body and the groove 20 on the crossbar to engage with each other. It is located on the retaining body corresponding to the check structure 爿 209 and has the first Check valve air hole 205 is set. : The air collecting part 30 includes: a diversion groove 3Q4, which is arranged in a recessed manner in the general body; in which, the first and second return valve air holes 2 Q5 are connected with the airbag 207 to keep it open. The design of the flow path 3 〇1, the outside of the flow path 301! Covered with a thin film check gasket 302 * for the second check valve, and the diversion of the first check valve air hole 2fl5 and the airbag 207 There is a gas output hole 303 for gas output on the outside. Please refer to Figure 2 for reference. The motor body 101 is combined with the base 10, and the convex shaft passes through the base 103 and fits with the rotating part 104. The rotating part 104 An eccentric inclined hole 105 is provided, and an air inlet 106 is provided on the side. After the motor is turned on,

S [ zih] LbS [zih] Lb

D 五、創作钒明(5) • · . 動部104铢速轉動,使插八偏心斜孔的連動桿能隨之運 轉。. . 請參間圖三$示,此為壓縮部20結合後示意圖,藉由連 動桿2 0 2插入圓二之侮心斜孔中,連動桿2 受偏心轉動壓 迫橫桿201 ’且橫桿20.1持續壓迫氣囊207 ,進而產生氣體 並送至集氣部; 〜 請同時參閱圖三及圖四,當氣ji.送至集氣部3〇 ^並於橫 桿201壓迫氧囊207同時.:第一止回閥氣.孔205受内部氣_壓 影響緊密關閉’第二止回闕之薄膜墊片302則受流道301推 出之氣體推力而形成厨邊開啟;待氣囊207復歸時,第一 止回閹氣礼開啟205並將空氣經導流槽304由底座之進氣孔 106吸入氣囊207中,雨第二止回間之薄媒止坪塾片302則 受内部氣壓影響緊密關閉》 在集氣室内部的氟體因氣囊207持續擠壓之_:故,透過流 道3 01將氣體導入後,均勻的將氣體由氣·體輪出.孔3 〇3嗔 出,丘防止氣艘回漏的薄膜止回塾片·3〇2能有效發揮其·功 效*阻隔氣體由流道301反向流入。 請.參聞圈五所示,錄:合後砷微泵浦利用栓鎖元件由外部 予以結合固定,並在壓缩部20與集氣部30問設有防漏塾片 210,使内部空間保恃一定壓力值,並且使氣體的出風相 對穩定u 【特點及功效】 本創作所提供之微泵浦氟體導流結構改良,與前述引證 案及其他習用技術相互比較時,更昊有下列之優點:D V. Creation vanadium (5) • ·. The moving part rotates at a speed of 104 baht, so that the linkage rod inserted into the eight eccentric oblique holes can move with it. .. Please refer to Figure 3 in Figure 3. This is a schematic diagram of the compression part 20 after it is combined. The linking rod 2 is inserted into the oblique hole of the circle II. The linking rod 2 is pressed by the eccentric rotation to press the crossbar 201 'and the crossbar. 20.1 Continue to compress the airbag 207, and then generate gas and send it to the gas collection unit; ~ Please refer to Figure 3 and Figure 4 at the same time, when the gas ji. Is sent to the gas collection unit 3〇 ^ and press the oxygen balloon 207 on the crossbar 201 at the same time .: The first check valve gas. The hole 205 is tightly closed under the influence of the internal air pressure. The second check valve's film gasket 302 is opened by the gas thrust of the runner 301. When the airbag 207 returns, the first On one occasion, the air opening ceremony 205 is opened and air is sucked into the airbag 207 through the air inlet hole 106 of the base through the guide groove 304, and the thin medium stop plate 302 in the second check room is closed tightly due to the internal air pressure. " The fluorine gas inside the gas collection chamber is continuously squeezed by the airbag 207. Therefore, after the gas is introduced through the flow channel 3 01, the gas is evenly discharged from the gas · body wheel. The hole 3 〇3 is pushed out, and the mound prevents the gas. The leak-proof membrane check cymbals · 302 can effectively exert their functions * Blocking gas from flowing backward from the flow channel 301. Please refer to the fifth circle. Record: After the arsenic micropump is combined and fixed from the outside using a latching element, a leak-proof tab 210 is provided in the compression part 20 and the gas collection part 30 to protect the internal space.恃 A certain pressure value, and make the air out of the gas relatively stable. [Characteristics and effects] The micro-pumped fluorine body diversion structure provided by this creation is improved. When compared with the aforementioned citations and other conventional technologies, it has the following Advantages:

!五、創作說明(6)! V. Creation Instructions (6)

1. 利用不同位置的進氣處及出氣處,使氣體流量更為順 暢’出風量較習用微泵浦相對穩定,且裝配容易D 2. 在集氣部所形成之氣室,透過流道將氣體導入後,可 以均勻的將氣體由氣體翰出孔喷出,且防止氣體由氣室匈 漏的薄膜止回墊片能有效發揮其功效,阻隔氣體由流道反 丨向流入 3. 連動桿係設置在橫桿上,組裝時只需插入轉動部之偏 心斜孔中,在馬.達運轉時使橫桿做左右按壓動作,逹到省 電以及降低噪音β . 上列詳細說明係針對本創作之一可行實施例之具體說明, 惟該實施例並非用以限制本創作之專利範園,凡耒脫離 .本創作技藝精神所為之等效實施或變更,均應包含於本案 之專利範圍中》 综上所述,本索不但在空間型態上確屬創新·,並能較習用 物品增進上述多項功效,應已.充分符合新穎性及進步性之 法定新型專利要件,爰依法提出申請,懇請 貴局核准本 件新塑專利申諳案,以勵釗作,至感德便》1. Use the air inlet and outlet at different positions to make the gas flow more smooth. 'The air output is relatively stable compared to the conventional micropump and easy to assemble. D 2. In the air chamber formed by the gas collection part, After the gas is introduced, the gas can be uniformly sprayed from the gas outlet hole, and the film check gasket that prevents the gas from leaking from the gas chamber can effectively exert its effect and block the gas from flowing back into the flow channel. 3. Linking rod It is installed on the crossbar. When assembling, it only needs to be inserted into the eccentric oblique hole of the rotating part. When the motor is running, the crossbar is pressed to the left and right to save power and reduce noise β. The above detailed description is for this A detailed description of one feasible embodiment of the creation, but this embodiment is not intended to limit the patent garden of the creation, where everyone is separated. The equivalent implementation or change of the spirit of the creative art should be included in the scope of the patent in this case 》 In summary, Benso is not only innovative in terms of space type, but also can enhance the above-mentioned multiple effects over conventional items. It should have already been applied. The legal new patent elements that are fully in line with novelty and progress are submitted according to law. Please, please kindly ask your office to approve this new plastic patent application.

第9頁Page 9

Claims (1)

!六、申靖專利範園 1. 一種微泵浦氣體導流結構改良,至少包含:~馬達組 件、一麗縮部 '一集氣部; |其中,馬連组件包括有馬達本體、底座以及轉動部,由 馬達本體延伸一凸轴,並穿過底座與_動部套合,轉動 部並有·設一偏心斜礼; e 壓縮部包括有横桿、固持體以及壓縮室,由·構桿延伸出 一連動桿,而連動桿係以一徧移角度插入轉動部偏心斜孔 土_,·墜縮室·由氣囊以及止回檔片-以及防瀹墊片所組成, 以氣囊後方固定卡榫穿過固持體與橫桿上卡槽互相卡合, 位於固持體上與止回檔月相對應處並有第一止回閥氣孔設 置; •集氣部包括有集氣室、與上述氣囊相對稱處之流道設 計,流埠外側覆有薄膜土回墊片,作為第二止回間之用, 以及連結上述第一止回閥氣孔與氣囊之導流槽,外側則 i輸出氣體之氣體輪出孔.; 藉由將連動悍插入馬達轉動部之偏心斜孔中,使連動桿做 .興周轉動*連動桿受偏心轉動壓迫橫桿,且橫桿持績遲 迫氣囊,進而產生氣體並送至集氣部,並於橫桿座迫氣 •囊同時:苐一止回閥氣礼受内部氣壓影響緊密關‘開,第二 I止回閥則受流道推出之氣體推力而開啟;勞氣囊復歸時了 第一止回閥氣孔開啟並將空氣經·導流槽吸入氣囊中,而第 二止回闕則受内部氣塵影響緊密關閘,藉如此持讀動作, 在集氣室内部的氣體因氣囊持續擠壓之緣故,透通流道 :將氣體導入後,均勻的將氣體由氣體輪出孔喷出β六 、 Shenjing Patent Fanyuan 1. An improved micro-pumped gas diversion structure, including at least: a motor assembly, a shrinkage section and a gas collection section; wherein the horse coupling assembly includes a motor body, a base and a rotation A convex shaft extends from the motor body and passes through the base to fit with the moving part. The rotating part is provided with an eccentric slant; e The compression part includes a cross bar, a retaining body and a compression chamber. An interlocking rod is extended, and the interlocking rod is inserted into the eccentric oblique hole soil of the rotating part at a once-shift angle. The collapsing chamber is composed of an airbag and a non-return baffle and a shim-proof gasket. The card is fixed at the rear of the airbag. The tenon passes through the retaining body and engages with the upper groove of the crossbar. It is located on the retaining body corresponding to the check valve and is provided with a first check valve air hole. The air collection part includes a gas collection chamber and the air bag. Symmetrical flow channel design, the outside of the flow port is covered with a thin film soil back gasket for the second check room, and the diversion groove connecting the air hole of the first check valve and the airbag, and the outside i Outlet of gas wheel .; In the eccentric oblique hole of the part, the linkage rod is made. Xing Zhou rotates * The linkage rod is pressed by the eccentric rotation to press the crossbar, and the crossbar's performance is slower than the airbag. At the same time, the airbag: the first check valve is closed and opened by the influence of the internal air pressure, and the second I check valve is opened by the gas thrust from the runner; when the airbag returns, the first check valve air hole is opened and The air is drawn into the airbag through the deflector, and the second non-return valve is closed tightly by the influence of internal air and dust. With this holding action, the gas inside the gas collection chamber is transparent because the airbag continues to squeeze. Flow channel: After the gas is introduced, the gas is evenly ejected from the gas wheel outlet holes β 第11頁Page 11
TW88208757U 1999-05-31 1999-05-31 Gas guiding structure improvement of micro pump TW387509U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW88208757U TW387509U (en) 1999-05-31 1999-05-31 Gas guiding structure improvement of micro pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW88208757U TW387509U (en) 1999-05-31 1999-05-31 Gas guiding structure improvement of micro pump

Publications (1)

Publication Number Publication Date
TW387509U true TW387509U (en) 2000-04-11

Family

ID=21648780

Family Applications (1)

Application Number Title Priority Date Filing Date
TW88208757U TW387509U (en) 1999-05-31 1999-05-31 Gas guiding structure improvement of micro pump

Country Status (1)

Country Link
TW (1) TW387509U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7040876B2 (en) 2001-11-06 2006-05-09 Oken Seiko Co., Ltd. Valves for a diaphragm pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7040876B2 (en) 2001-11-06 2006-05-09 Oken Seiko Co., Ltd. Valves for a diaphragm pump

Similar Documents

Publication Publication Date Title
TW387509U (en) Gas guiding structure improvement of micro pump
CN209996881U (en) pressurization ultrafiltration device for nephrology department
JPS63192980A (en) Two step liquid ring pump
US11614087B2 (en) Compressor having intermediate passage capable of conveying accumulated oil to a second compression part and air conditioner including same
CN105275884A (en) Strengthening and application of power type vane pump
CN107461367B (en) Non-contact nano bubble micropump
CN209414118U (en) A kind of dual head diaphragm pump
CN112196773A (en) Annular cavity secondary vibration valveless piezoelectric pump
CN216842239U (en) Baffle structure of multi-stage split pump shell
CN209908729U (en) Novel miniature diaphragm pump with one-way valve
CN205136116U (en) Chopped -off head double suction impeller of multistage centrifugal pump and this centrifugal pump
CN219492721U (en) Medical vacuum generating device
CN217926336U (en) Large-flow impeller pump
CN213219800U (en) Improved dialysis pipeline
CN218793559U (en) Blood pumping transmission device and blood pumping equipment
JPH03118286U (en)
JPS6042240Y2 (en) pump
US20220265994A1 (en) Pump-Valving Assembly for a Pulsatile Fluid Pump
JPH0465974U (en)
JP3011986U (en) Impeller and pump structure
CN2379134Y (en) Bady-liquid pumping-off apparatus
KR960016040B1 (en) Pump
JPH03118287U (en)
TWI262255B (en) Centrifugal type automatic water circulation system
AU2021430287A1 (en) Pump-valving assembly for a pulsatile fluid pump

Legal Events

Date Code Title Description
GD4K Issue of patent certificate for granted utility model filed before june 30, 2004
MC4K Revocation of granted utility model
MC4K Revocation of granted utility model