JPH0417813Y2 - - Google Patents
Info
- Publication number
- JPH0417813Y2 JPH0417813Y2 JP1986073771U JP7377186U JPH0417813Y2 JP H0417813 Y2 JPH0417813 Y2 JP H0417813Y2 JP 1986073771 U JP1986073771 U JP 1986073771U JP 7377186 U JP7377186 U JP 7377186U JP H0417813 Y2 JPH0417813 Y2 JP H0417813Y2
- Authority
- JP
- Japan
- Prior art keywords
- drive shaft
- eccentric cam
- pump
- drive
- cam mechanism
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000033001 locomotion Effects 0.000 claims description 14
- 238000005086 pumping Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Description
【考案の詳細な説明】
(考案の技術分野)
この考案は、定量ポンプと称されるポンプ部を
往復運動させてポンピング動作を行なわせてなる
往復動ポンプの駆動装置の改良に関する。[Detailed Description of the Invention] (Technical Field of the Invention) This invention relates to an improvement in a drive device for a reciprocating pump, which performs a pumping operation by reciprocating a pump section called a metering pump.
(考案の技術的背景とその問題点)
一般に、定量ポンプにおいては、ポンプ部を構
成するダイヤフラムのポンピング動作の駆動力伝
達手段、すなわち、減速された駆動モータの出力
軸の回転運動を往復運動に変換する機構として偏
心カムが広く用いられている。(Technical background of the invention and its problems) In general, in metering pumps, the driving force transmission means for the pumping action of the diaphragm constituting the pump section, that is, the rotational motion of the output shaft of the drive motor that has been decelerated, is converted into reciprocating motion. Eccentric cams are widely used as a converting mechanism.
従来のこの種の定量ポンプの駆動装置は、駆動
モータの出力軸に取付けられた偏心カムが、通
常、ポンプ部の駆動軸部(プランジャ)と同一軸
上に設置してなる構成となつている。 Conventional metering pump drive devices of this type have a configuration in which an eccentric cam attached to the output shaft of the drive motor is usually installed on the same axis as the drive shaft (plunger) of the pump section. .
しかしながら、このような従来のポンプ部にお
けるポンピング動作の駆動力伝達手段では、ポン
プ部のストローク長の調整を行うための駆動軸部
の往復運動量(移動量)を突き当て規制する衝合
部材が、ポンプ部の駆動軸部の中心軸に対してオ
フセツトした位置にあり、またポンプ部の駆動軸
部の軸受は、ポンプ部側先端部と入力軸側に挟ま
れた1ケ所だけとなつているのが現状である。 However, in such a conventional driving force transmission means for pumping operation in a pump unit, an abutment member that abuts and regulates the amount of reciprocating movement (travel) of the drive shaft unit for adjusting the stroke length of the pump unit, It is located offset from the center axis of the drive shaft of the pump section, and the bearing of the drive shaft section of the pump section is only at one location, sandwiched between the tip of the pump section and the input shaft. is the current situation.
このため、ポンプ部の駆動軸部のストローク長
の調整が行われている際には、ポンプ部の駆動軸
部に対し、軸方向以外の応力が作用し、これによ
つて軸受の局部荷重が増大して偏摩耗や軸受端部
の摩耗が生じ易く、耐久寿命に悪影響を及ぼして
信頼性に劣るばかりでなく、装置全体をコンパク
トにできないといつた問題があつた。 Therefore, when the stroke length of the drive shaft of the pump section is being adjusted, stress in a direction other than the axial direction is applied to the drive shaft of the pump section, and this causes a local load on the bearing. As a result, uneven wear and wear at the end of the bearing tend to occur, which not only adversely affects the durability life and lowers reliability, but also makes it impossible to make the entire device compact.
(考案の目的)
この考案は、上記の事情のもとになされたもの
で、その目的とするところは、ポンプ部のストロ
ーク長の調整が簡便にでき、かつポンプ部の駆動
軸部に対する軸方向以外の応力の作用を防止して
信頼性及び耐久寿命を高めるとともに、コンパク
ト化を図ることができるようにした往復動ポンプ
の駆動装置を提供することにある。(Purpose of the invention) This invention was made under the above circumstances, and its purpose is to easily adjust the stroke length of the pump part, and to make it possible to easily adjust the stroke length of the pump part, and to It is an object of the present invention to provide a reciprocating pump drive device that prevents the effects of stress other than those described above, increases reliability and durability, and can be made more compact.
(考案の概要)
上記した目的を達成するために、この考案は、
駆動モータの出力軸の回転駆動を、カム軸を有す
る偏心カム機構を介して駆動軸部に伝達して該駆
動軸部に軸方向に沿う往復動を生じさせ、該駆動
軸部の一端部を介してポンプ部におけるポンピン
グ動作を遂行し、該駆動軸部の往復動の移動量を
規制してポンプ部のストローク長の調整を行なう
ように該駆動軸部に衝合する衝合部材を有するス
トローク長調整機構を備えた往復動ポンプを前提
として、前記駆動軸部の前記一端部とは反対側の
他端部を該駆動軸部の中心軸線上において前記衝
合部材と対応位置させ、該駆動軸部の一端部及び
他端部の中間部において、該駆動軸部の中心軸線
に対して対称位置に一対の摺接面をそれぞれ形成
するとともに、これら摺接面に摺接して該駆動軸
部へ動力伝達を行なうように前記カム軸上に取着
された一対の偏心カム部材を前記偏心カム機構に
設け、該駆動軸部に該偏心カム機構を囲んで形成
されるとともに前記他端部に連結されたループ状
連結部を設けてなる構成を特徴とする往復動ポン
プの駆動装置を提案するものである。(Summary of the invention) In order to achieve the above purpose, this invention:
The rotational drive of the output shaft of the drive motor is transmitted to the drive shaft section via an eccentric cam mechanism having a camshaft, causing the drive shaft section to reciprocate along the axial direction, and one end of the drive shaft section is a stroke having an abutment member that abuts against the drive shaft portion to perform a pumping operation in the pump portion through the pump portion, regulate the amount of reciprocating movement of the drive shaft portion, and adjust the stroke length of the pump portion; Assuming that the reciprocating pump is equipped with a length adjustment mechanism, the other end of the drive shaft portion opposite to the one end portion is positioned corresponding to the abutment member on the central axis of the drive shaft portion, and the drive A pair of sliding contact surfaces are formed at symmetrical positions with respect to the central axis of the drive shaft at intermediate portions between one end and the other end of the shaft, and the drive shaft is in sliding contact with these sliding surfaces. The eccentric cam mechanism is provided with a pair of eccentric cam members mounted on the camshaft so as to transmit power to the eccentric cam mechanism, and a pair of eccentric cam members are formed on the drive shaft portion surrounding the eccentric cam mechanism and on the other end thereof. The present invention proposes a reciprocating pump drive device characterized by a configuration in which connected loop-shaped connecting portions are provided.
(作用)
すなわち、この考案の往復動ポンプの駆動装置
によれば、駆動軸部に、偏心カム機構を囲んで形
成されるループ状連結部によつて該駆動軸部の他
端部をその中心軸線上に位置させてストローク長
調整機構の衝合部材に対応させる構成としてある
ので、ループ状連結部が偏心カム機構を囲う構成
とされ、偏心カム機構の動作領域に干渉すること
なく、駆動軸部を往復動させることができ、しか
も、衝合部材から駆動軸部に対しその中心軸線に
沿つて力を作用させることができる。又、該駆動
軸部にその中心軸線に対して対称位置に一対の摺
接面を設けてこれに偏心カム機構の一対の偏心カ
ム部材を対応させたので、偏心カム機構から駆動
軸部への力の伝達を分散した位置から中心軸線に
沿つて作用させることができ、偏心カム機構及び
ストローク長調整機構のいずれから作用する力も
駆動軸部の中心軸線に沿うので、駆動軸部に対し
て軸方向以外の応力の作用を解消して、駆動装置
の耐久寿命ならびに信頼性の向上が図られる。(Function) That is, according to the reciprocating pump drive device of this invention, the loop-shaped connecting portion formed in the drive shaft portion surrounding the eccentric cam mechanism allows the other end of the drive shaft portion to be connected to its center. Since the structure is such that it is positioned on the axis and corresponds to the abutment member of the stroke length adjustment mechanism, the loop-shaped connecting part is configured to surround the eccentric cam mechanism, and the drive shaft can be moved without interfering with the operating area of the eccentric cam mechanism. The drive shaft can be reciprocated, and a force can be applied from the abutting member to the drive shaft along its central axis. In addition, since a pair of sliding surfaces are provided on the drive shaft portion at symmetrical positions with respect to the central axis, and a pair of eccentric cam members of the eccentric cam mechanism are made to correspond to these sliding surfaces, there is no contact between the eccentric cam mechanism and the drive shaft portion. Force transmission can be applied along the central axis from dispersed positions, and the force acting from both the eccentric cam mechanism and the stroke length adjustment mechanism is also along the central axis of the drive shaft, so the axis relative to the drive shaft is By eliminating the effects of stress in directions other than directions, the durability and reliability of the drive device can be improved.
(実施例)
以下、本考案を図示の一実施例を参照しながら
詳細に説明する。(Embodiment) Hereinafter, the present invention will be described in detail with reference to an illustrated embodiment.
第1図及び第2図に示すように、図中1は往復
動ポンプ本体で、先端部側にポンプ部を構成する
ポンプヘツド2を備え、このポンプヘツド2は、
吸込口3と吐出口4とを有し、これら各々の吸込
口3と吐出口4には、ボールバルブ5,6が設け
られている。また、前記ポンプヘツド2内のポン
プ室7には、ダイヤフラム8が設けられていて、
このダイヤフラム8には、後述する動力伝達手段
により往復動する駆動軸部9がリターンスプリン
グ10で軸方向に付勢されて連結されている。こ
の駆動軸部9は、前記ダイヤフラム8をポンピン
グ動作させてなるもので、このダイヤフラム8に
よるポンピング動作で前記吸込口3から流入させ
たポンプ給送流体を吐出口4より定量ずつ吐出さ
せるようになつている。そして、このようなポン
プ給送流体の吐出量は、駆動軸部9のストローク
量に対応するものであり、このストローク量の調
整は、前記駆動軸部9の往復運動範囲を突き当て
規制する後述する衝合部材を有するストローク長
調整機構によつて行われるものである。 As shown in FIGS. 1 and 2, reference numeral 1 in the figures is a reciprocating pump main body, which is equipped with a pump head 2 constituting a pump section on the tip side, and this pump head 2 has the following features:
It has a suction port 3 and a discharge port 4, and each of the suction port 3 and discharge port 4 is provided with ball valves 5, 6. Further, a diaphragm 8 is provided in the pump chamber 7 in the pump head 2,
A drive shaft portion 9 is connected to the diaphragm 8 and is biased in the axial direction by a return spring 10, which is reciprocated by a power transmission means to be described later. This drive shaft portion 9 is formed by pumping the diaphragm 8, and by the pumping action of the diaphragm 8, the pumped fluid introduced from the suction port 3 is discharged in fixed amounts from the discharge port 4. ing. The discharge amount of the pumped fluid corresponds to the stroke amount of the drive shaft portion 9, and the adjustment of this stroke amount is performed as described below, in which the range of reciprocating motion of the drive shaft portion 9 is abutted and restricted. This is performed by a stroke length adjustment mechanism having an abutment member that allows the stroke length to be adjusted.
すなわち、上記動力伝達手段は、ポンプヘツド
2が接続されたケーシング11内に前記駆動軸部
9のポンプ部側先端部9aを該駆動軸部9の中心
軸線に沿つて摺動自在にかつリターンスプリング
10の付勢力により軸方向に付勢して支持し、か
つその軸方向の後端部9b側を前記ケーシング1
1の後端側に延長形成した摺動部12に該駆動軸
部9の中心軸線に沿つて摺動自在に軸支させる一
方、この駆動軸部9の中間途上に形成した横断面
コ字状の動力伝達部をなし、該駆動軸部9の中心
軸線に対して対称位置に形成された一対の摺接面
91,92に偏心カム機構13を構成するカム軸
14で左右対称的に離間させて支持された一対の
ベアリングからなる偏心カム部材を構成する偏心
カム15,16を摺接位置させてなるとともに、
前記カム軸14に設けたウオームホイール17に
前記ケーシング11の外側上部から臨む駆動モー
タ18の出力軸19に設けたウオーム20を噛合
させることにより、前記駆動モータ18の出力軸
19の回転で偏心カム機構13の一対の偏心カム
15,16を偏心回転させて前記駆動軸部9を往
復動させるようになつているものである。 That is, the power transmission means allows the pump-side tip 9a of the drive shaft 9 to slide freely along the central axis of the drive shaft 9 within the casing 11 to which the pump head 2 is connected, and the return spring 10. The casing 1 is supported by being biased in the axial direction by the biasing force of
A sliding portion 12 extending toward the rear end of the drive shaft portion 9 is slidably supported along the central axis of the drive shaft portion 9, and a U-shaped cross section is formed midway through the drive shaft portion 9. A pair of sliding surfaces 91 and 92 formed at symmetrical positions with respect to the central axis of the drive shaft section 9 are symmetrically spaced apart by a cam shaft 14 forming an eccentric cam mechanism 13. Eccentric cams 15 and 16 constituting an eccentric cam member consisting of a pair of bearings supported by
By meshing the worm wheel 17 provided on the camshaft 14 with the worm 20 provided on the output shaft 19 of the drive motor 18 facing from the outer upper part of the casing 11, the rotation of the output shaft 19 of the drive motor 18 causes an eccentric cam to be generated. A pair of eccentric cams 15 and 16 of the mechanism 13 are eccentrically rotated to cause the drive shaft portion 9 to reciprocate.
また、図中21は上記駆動軸部ストローク量S
の調整機構で、前記ケーシング11の後端側に延
長形成した摺動部12に衝合部材22を可動自在
に配置するとともに、この衝合部材22の先端部
22aを前記駆動軸部9の後端部9b側と駆動軸
部9の中心軸線に沿つて対応位置させてなるもの
であり、この衝合部材22は、前記ケーシング1
1の摺動部11aの後端側に螺合される回転調整
体23により移動量が調整可能になつており、こ
の回転調整体23には、その回転角で前記衝合部
材22の移動量を判別可能にする表示目盛aが付
設されている。すなわち、このようなストローク
長調整機構21は、前記回転調整体23の回転に
より衝合部材22の移動量を調整して駆動軸部9
の往復運動範囲を突き当て規制し得るようになつ
ているものである。又、駆動軸部9の一端部であ
るポンプ部側先端部9aに対して偏心カム機構を
介在してその反対側ないしは後端側に位置する他
端部である軸形状の後端部9bを駆動軸部9の中
心軸線に沿つて位置づける構成とするために、駆
動軸部9には、特に第1図で示すように、偏心カ
ム機構13を囲むように形成されたループ状連結
部9cが一体に設けられ、これに対して後端部9
bが一体に連結されている。この構成により、偏
心カム機構13の回動動作領域に対して干渉する
ことなく駆動軸部9が往復動し得る。又、該連結
部9cがループ形状となつているために強度も十
分に得られ、一端部において前端部9aが、他端
部において後端部9bがそれぞれ軸支され中心軸
線に沿つて駆動軸部9が安定した往復動を行ない
得る。 In addition, 21 in the figure is the drive shaft portion stroke amount S
With this adjustment mechanism, an abutment member 22 is movably disposed on a sliding portion 12 extending to the rear end side of the casing 11, and a tip end 22a of this abutment member 22 is placed behind the drive shaft portion 9. The abutment member 22 is positioned correspondingly to the end portion 9b side along the central axis of the drive shaft portion 9.
The amount of movement can be adjusted by a rotation adjustment body 23 screwed onto the rear end side of the sliding portion 11a of 1. A display scale a is attached that allows for identification. That is, such a stroke length adjustment mechanism 21 adjusts the amount of movement of the abutting member 22 by rotating the rotation adjustment body 23, and adjusts the movement amount of the abutting member 22 to adjust the movement of the drive shaft portion 9.
The range of reciprocating motion can be regulated by abutment. Further, an eccentric cam mechanism is interposed with respect to the pump part side tip part 9a which is one end part of the drive shaft part 9, and the other end part which is the shaft-shaped rear end part 9b is located on the opposite side or rear end side. In order to position the drive shaft portion 9 along the central axis, the drive shaft portion 9 includes a loop-shaped connecting portion 9c formed to surround the eccentric cam mechanism 13, as shown in FIG. provided integrally, whereas the rear end portion 9
b are connected together. With this configuration, the drive shaft portion 9 can reciprocate without interfering with the rotational movement area of the eccentric cam mechanism 13. In addition, since the connecting portion 9c has a loop shape, sufficient strength can be obtained, and the front end portion 9a is supported at one end, and the rear end portion 9b is supported at the other end, so that the drive shaft is supported along the central axis. The portion 9 can perform stable reciprocating motion.
さらに、図中24は前記衝合部材22の移動位
置を固定するセツトネジで、これによつてストロ
ーク量が安定的に保たれるようになつている。 Further, reference numeral 24 in the figure is a set screw for fixing the moving position of the abutment member 22, so that the stroke amount can be maintained stably.
なお、本考案は、上記の実施例には限定され
ず、例えばベローズ型のポンプ構造のものなどに
も本考案の駆動装置を適用することが可能であ
る。 Note that the present invention is not limited to the above-described embodiments, and the drive device of the present invention can be applied to, for example, a bellows-type pump structure.
その他、本考案は、本考案の要旨を変えない範
囲で種々変更実施可能なことは勿論である。 In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.
(考案の効果)
以上の説明から明らかなように、本考案によれ
ば偏心カム機構によつて往復動する駆動軸部に、
この中心軸線に対して対称位置に一対の摺接面を
設けて、これにカム軸上の偏心カム部材をそれぞ
れ対応するようにするとともに、ループ状連結部
によつて駆動軸部を後方に延長して、これにスト
ローク長調整機構の衝合部材に対応する後端部を
中心軸線に沿う位置で一体に設けるように構成し
たので、偏心カム機構ならびにストローク長調整
機構から駆動軸部へ作用するいずれの力も中心軸
線に沿い、駆動軸部に対して偏つた力の作用が解
消され駆動装置の耐久寿命ならびに信頼性の向上
が図られ、しかも、前述のループ状連結部の構成
により駆動軸部の往復動が偏心カム機構の動作と
何等、干渉することなく行ない得るものであり、
ループ状連結部も駆動軸部とループ状に一体に連
結されているため、強度も十分に得られ、簡単な
構成で上記の効果を達成し得るものである。(Effects of the invention) As is clear from the above explanation, according to the invention, the drive shaft part that reciprocates by the eccentric cam mechanism,
A pair of sliding surfaces are provided at symmetrical positions with respect to this central axis, and the eccentric cam members on the camshaft are made to correspond to these, and the drive shaft portion is extended rearward by a loop-shaped connecting portion. and a rear end corresponding to the abutment member of the stroke length adjustment mechanism is integrally provided at a position along the central axis, so that the eccentric cam mechanism and the stroke length adjustment mechanism act on the drive shaft. All forces are directed along the central axis, eliminating the biased force acting on the drive shaft, improving the durability and reliability of the drive device.Moreover, due to the above-mentioned loop-shaped connection structure, the drive shaft The reciprocating movement of can be performed without any interference with the operation of the eccentric cam mechanism,
Since the loop-shaped connecting portion is also integrally connected to the drive shaft portion in a loop-like manner, sufficient strength can be obtained, and the above effects can be achieved with a simple configuration.
第1図は本考案に係る往復動ポンプの駆動装置
の一実施例を示す第2図−線に沿つて見た縦
断面図、第2図は同じく第1図−線に沿つて
見た動力伝達部分の横断面図である。
1……ポンプ本体、2……ポンプヘツド(ポン
プ部)、9……駆動軸部、10……リターンスプ
リング、12……摺動部、13……偏心カム機
構、14……カム軸、15,16……偏心カム、
17……ウオームホイール、18……駆動モー
タ、19……出力軸、20……ウオーム、21…
…ストローク長調整機構、22……衝合部材、2
3……回転調整体、S……ストローク長。
Fig. 1 is a vertical sectional view taken along the line shown in Fig. 2, which shows an embodiment of the drive device for a reciprocating pump according to the present invention; FIG. 3 is a cross-sectional view of the transmission portion. DESCRIPTION OF SYMBOLS 1... Pump body, 2... Pump head (pump part), 9... Drive shaft part, 10... Return spring, 12... Sliding part, 13... Eccentric cam mechanism, 14... Camshaft, 15, 16...Eccentric cam,
17... Worm wheel, 18... Drive motor, 19... Output shaft, 20... Worm, 21...
...Stroke length adjustment mechanism, 22...Abutment member, 2
3... Rotation adjustment body, S... Stroke length.
Claims (1)
ム軸14を有する偏心カム機構13を介して駆動
軸部9に伝達して該駆動軸部に軸方向に沿う往復
動を生じさせ、該駆動軸部の一端部9aを介して
ポンプ部2におけるポンピング動作を遂行し、該
駆動軸部の往復動の移動量を規制してポンプ部の
ストローク長の調整を行なうように該駆動軸部に
衝合する衝合部材22を有するストローク長調整
機構21を備えた往復動ポンプにおいて、 前記駆動軸部の前記一端部9aとは反対側の他
端部9bを該駆動軸部の中心軸線上において前記
衝合部材22と対応位置させ、該駆動軸部の一端
部及び他端部の中間部において、該駆動軸部の中
心軸線に対して対称位置に一対の摺接面91,9
2をそれぞれ形成するとともに、これら摺接面に
摺接して該駆動軸部へ動力伝達を行なうように前
記カム軸14上に取着された一対の偏心カム部材
15,16を前記偏心カム機構13に設け、該駆
動軸部に該偏心カム機構13を囲んで形成される
とともに前記他端部9bに連結されたループ状連
結部9cを設けてなることを特徴とする往復動ポ
ンプの駆動装置。[Claims for Utility Model Registration] The rotational drive of the output shaft 19 of the drive motor 18 is transmitted to the drive shaft section 9 via the eccentric cam mechanism 13 having the camshaft 14 to reciprocate along the drive shaft section in the axial direction. The pump unit 2 performs a pumping operation in the pump unit 2 through one end 9a of the drive shaft, and regulates the amount of reciprocating movement of the drive shaft to adjust the stroke length of the pump unit. In a reciprocating pump equipped with a stroke length adjustment mechanism 21 having an abutment member 22 that abuts against the drive shaft, the other end 9b of the drive shaft on the opposite side from the one end 9a is connected to the drive shaft. a pair of sliding contact surfaces located symmetrically with respect to the central axis of the drive shaft portion at intermediate portions between one end and the other end of the drive shaft portion; 91,9
A pair of eccentric cam members 15 and 16 are attached to the eccentric cam mechanism 13 and are mounted on the camshaft 14 so as to slide on these sliding surfaces and transmit power to the drive shaft. A reciprocating pump drive device, characterized in that the drive shaft portion is provided with a loop-shaped connecting portion 9c that is formed surrounding the eccentric cam mechanism 13 and connected to the other end portion 9b.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986073771U JPH0417813Y2 (en) | 1986-05-16 | 1986-05-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986073771U JPH0417813Y2 (en) | 1986-05-16 | 1986-05-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62184179U JPS62184179U (en) | 1987-11-21 |
JPH0417813Y2 true JPH0417813Y2 (en) | 1992-04-21 |
Family
ID=30918397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986073771U Expired JPH0417813Y2 (en) | 1986-05-16 | 1986-05-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0417813Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008297905A (en) * | 2007-05-29 | 2008-12-11 | Oken Ltd | Diaphragm pump |
CN102937089B (en) * | 2012-11-19 | 2016-01-20 | 浙江爱力浦泵业有限公司 | A kind of mechanically actuated diaphragm metering pump transmission mechanism of diaphragm |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5339041A (en) * | 1976-09-22 | 1978-04-10 | Nec Corp | Programable active filter |
-
1986
- 1986-05-16 JP JP1986073771U patent/JPH0417813Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5339041A (en) * | 1976-09-22 | 1978-04-10 | Nec Corp | Programable active filter |
Also Published As
Publication number | Publication date |
---|---|
JPS62184179U (en) | 1987-11-21 |
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