JPS5825593A - Rod driving device for reciprocating pump - Google Patents

Abstract

PURPOSE:To aim at smoothness in feeding fluid, by contracting a spring resiliently reacting to an abnormal pressure rise when pressure at the discharge side rises unusually, while decreasing reciprocating stokes by a rod in an automated manner. CONSTITUTION:When abnormal high pressure happens on the side of a discharge opening 6 for some reason or other whereby internal pressure of a pump casing 1 is abnormally intensified, a spring 36 succumbs to the abnormal pressure as the rod 11 goes forward so that resilient contraction in accord with suchlike pressure is produced. As a result, such drive that automatically contracts the stroke of the rod 11 is also produced, decreasing a capacity of expansion and contraction of the pump casing 1, and feeds fluid little by little or eventually almost nothing so that any damage resulting from the abnormal pressure is obviated. Like this, when abnormal pressure occurs in a reciprocating pump, the stroke of the rod 11 is lessened at once and it can cope with the abnormal pressure.

Description

【発明の詳細な説明】 本発明は、ダイヤフラムポンプ、プランジャーポンプ等
の容積式ポンプに属する往復動ポンプのＰ、２ ０ツ°ドを駆動する駆動装置に係り、往復駆動機構に連
継して往復動するばね受部材に一端を接触する発条の他
端をロッドに圧接して往復駆動し、ポンプの吐出側に圧
力変動が生じたときには発条の弾縮作用によりロッドの
ストロークを自動的に減少して少い圧縮量で無理なく流
体を送給するようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive device for driving the P and 20 points of a reciprocating pump belonging to positive displacement pumps such as diaphragm pumps and plunger pumps, and is connected to a reciprocating drive mechanism. One end of the spring contacts a reciprocating spring bearing member, and the other end of the spring is pressed against the rod to drive the spring back and forth, and when pressure fluctuations occur on the discharge side of the pump, the stroke of the rod is automatically adjusted by the elastic action of the spring. This reduces the amount of compression and allows the fluid to be delivered easily with a small amount of compression.

往復動ポンプの吐出側に連通ずる濾過機の濾布に目詰り
を生じ、又は吐出側に連通ずる管路の閉鎖に−よって水
撃作用が生じる等の原因で、ポンプの吐出側の圧力が上
昇した場合に往復駆動機構によって往復ポンプロッドの
ストロークを不変にして連結していると、ポンプ内の圧
力が異常に高まり、往復駆動機構に異常負荷がかかつて
駆動各部若しくはポンプケーシングの破損を生じたり、
圧Ｐ・　３ 圧 送流体がさらに上昇して吐出側に連通ずる濾過機△ 等の機器を損壊したりすることがあって危険である。The pressure on the discharge side of the pump may increase due to clogging of the filter cloth of the filter that communicates with the discharge side of the reciprocating pump, or water hammer effect caused by the closure of the pipe line communicating with the discharge side. If the stroke of the reciprocating pump rod is kept unchanged by the reciprocating drive mechanism when the pump rises, the pressure inside the pump will increase abnormally, placing an abnormal load on the reciprocating drive mechanism and causing damage to the drive parts or the pump casing. Or,
Pressure P・3 The pumped fluid may rise further and damage equipment such as the filter △ that communicates with the discharge side, which is dangerous.

本発明は吐出側の吐出圧力が異常上昇した場合には、そ
の異常圧力上昇に感応して発条を弾縮し、ロッドの往動
ストロークを自動的に減少させて、流体の送給を安全円
滑に施すようにしたものであって、吐出側圧力の変動が
生ずる個所の流体供給△ に最適な往復動ポンプロッドの駆動装置を提供すること
を目的としたものである。When the discharge pressure on the discharge side increases abnormally, the spring is elastically retracted in response to the abnormal pressure increase, and the forward stroke of the rod is automatically reduced to ensure safe and smooth fluid delivery. The purpose of this invention is to provide a reciprocating pump rod drive device that is optimal for fluid supply at locations where fluctuations in discharge side pressure occur.

添付図面は本発明をダイヤフラムポンプに適用した一実
施例を示すものであって、図中７はポンプケーシングで
、その−側面の大径間口２にダイヤフラムｑを当て、該
開口２の後側口縁と、バックケーシング３とによりその
ダイヤフラムｑの周特開昭５８−２５５９３　（２） 部を挟着する。ポンプケーシングｌの上端と下端には吸
込口Ｓと吐出口６を設け、それぞれにボール弁７／　、
ｔｒ／を内装したバルブケース７、ｌを連結する。９は
ポンプケーシング／に一体状に固定したバックケーシン
グ３を取付けた取動板である。The attached drawing shows an embodiment in which the present invention is applied to a diaphragm pump. In the drawing, 7 is a pump casing, and the diaphragm q is applied to the large diameter opening 2 on the side of the pump casing, and the rear opening of the opening 2 is connected to the pump casing. The periphery of the diaphragm q is sandwiched between the edge and the back casing 3. A suction port S and a discharge port 6 are provided at the upper and lower ends of the pump casing L, and a ball valve 7/,
Connect the valve cases 7 and 1 containing the tr/. Reference numeral 9 denotes a moving plate to which the back casing 3 integrally fixed to the pump casing is attached.

１／は先端の螺子部１２を取付板９に遊挿してダイヤフ
ラムｑの中心に通したロッドであって、ダイヤフラムリ
の内面及び外面で挟合板／３、／Ｉｔを螺子部１２に嵌
め、先端の締付ナツト／Ｓと後側の受ナツト１６とに−
よりダイヤフラムｑの中心に連結する。1/ is a rod with a threaded part 12 at the tip loosely inserted into the mounting plate 9 and passed through the center of the diaphragm q, and sandwiching plates /3 and /It are fitted into the threaded part 12 on the inner and outer surfaces of the diaphragm, and the tip is inserted loosely into the mounting plate 9 and passed through the center of the diaphragm q. between the tightening nut/S and the rear receiving nut 16.
and is connected to the center of the diaphragm q.

ｊ／はエキセン型の往復駆動機構で、カム軸λλの周り
に偏心カム板２３を固定し、さらに偏心カム板２３に従
動輪２ｑを回転自由に嵌めてなり、従動輪ｕｐの外周か
ら形成したねじ孔２ｊにブツＰ、Ｊ シンク２６を嵌合螺着し、該ブッシング２乙の外周に横
凸字形管材からなるばね受部材２７を螺合固定する。前
記ロッドｌｌの後端部はばね受部材２７の中心孔に摺動
自由に通し、後端部ｌｌ′をブッシング２乙の内周に摺
動可能に嵌めてばね受部材２７の後側係止段２７′に係
合する。j/ is an eccentric type reciprocating drive mechanism, in which an eccentric cam plate 23 is fixed around the cam axis λλ, and a driven wheel 2q is rotatably fitted to the eccentric cam plate 23, and is formed from the outer periphery of the driven wheel up. The bushings P and J sinks 26 are fitted and screwed into the screw holes 2j, and a spring receiving member 27 made of a horizontally convex tube is screwed and fixed to the outer periphery of the bushing 2o. The rear end of the rod ll is slidably inserted into the center hole of the spring receiving member 27, and the rear end ll' is slidably fitted into the inner periphery of the bushing 2B to lock the rear side of the spring receiving member 27. Engages step 27'.

ロッド／Ｉの螺子部１３←は、前記のばね受部材コアに
対向させて調圧ナツト３／を螺合した上でロックナツト
３Ｓにより任意位置に固定し、調圧ナツト３１からばね
受部材２７の方向に突出した縮径管部３２の外周にスラ
ストベアリング３３と、該ベアリングによって支持した
ばね受板３Ｉｌとを嵌め、ロッド／ｌの周りでばハ受部
材２７とばね受板３ダとに一端と他端とを接したコイル
発条３６を嵌める。The threaded portion 13← of the rod /I is screwed onto the pressure adjusting nut 3/ so as to face the spring receiving member core, and then fixed at an arbitrary position with a lock nut 3S. A thrust bearing 33 and a spring receiving plate 3Il supported by the bearing are fitted to the outer periphery of the reduced diameter tube portion 32 protruding in the direction, and one end is attached to the receiving member 27 and the spring receiving plate 3DA around the rod /l. A coil spring 36 is fitted in which the other end is in contact with the other end.

Ｐ、≦ 本発明は前記に例示した構成になり、ダイヤフラムポン
プその他の容積式ポンプに糾する往復動ポンプの、ダイ
ヤプラム、ピストン等の往復移動を制御するロッドｌｌ
を往復駆動機構２１に直接に連結せず、往復駆動機構２
１に取付けたばね受部材２７に一端を接触した発条３６
の他端をロッドｉ’ｉに設けたばね受板３ｑに圧接し、
ロッド／１の前進時には往復駆動機構２１のばね受部材
２７により発条３６を介して連動し、ロッド／ｌの後即
時には後端部／　／’をばね受部材コアの係止段λ７′
により後方を引いて通常は一定のストロークによりロッ
ド／ｌを往復駆動するものであって、ロッドｌノを往復
駆動機構Ｊ／に直接連結した従来の駆動装置と些して変
らない往復駆動を施すことかで−きる。また、吐出口６
側に何等かの原因で異常高圧を生じ、それにつれてポン
プケーシングｌの内部圧力が異常に高まると、ロッド１
７の前進時に発条３６がその異常圧力にお今負け、その
異常圧力に調和した弾縮を生じて、ロッド／／のストロ
ークを自動的に縮少する駆動を生じてポンプケーシング
の拡縮容量を減少し、流体を少しずつ圧送するか、又は
殆んど圧送しなくなって、各部の異常圧力に基く損傷を
防止する。なおまた、前記異常圧力が発生の原因を除す
ればロッドｌ／を自動的に通常ストロークに戻すもので
、往復動ポンプの内部に異常圧力が発生した場合に、即
時にロッド／／のストロークを減少して該異常圧力に対
応させ得るすぐれた効果をもつ。P, ≦ The present invention has the configuration illustrated above, and includes a rod ll that controls the reciprocating movement of the diaphragm, piston, etc. of a reciprocating pump such as a diaphragm pump or other positive displacement pump.
without directly connecting the reciprocating drive mechanism 21 to the reciprocating drive mechanism 21.
Spring 36 with one end in contact with the spring receiving member 27 attached to 1
The other end is pressed into contact with a spring receiving plate 3q provided on rod i'i,
When the rod /1 moves forward, it is interlocked by the spring receiving member 27 of the reciprocating drive mechanism 21 via the spring 36, and immediately after the rod /l, the rear end / /' is moved to the locking stage λ7' of the spring receiving member core.
The rod is reciprocated by pulling the rear end with a normally constant stroke, and the reciprocating drive is no different from a conventional drive device in which the rod is directly connected to the reciprocating drive mechanism I can do it. In addition, the discharge port 6
If an abnormally high pressure is generated on the side for some reason and the internal pressure of the pump casing l increases abnormally, the rod 1
When the pump 7 moves forward, the spring 36 succumbs to the abnormal pressure and causes an elastic contraction in harmony with the abnormal pressure, creating a drive that automatically reduces the stroke of the rod // and reducing the expansion/contraction capacity of the pump casing. However, the fluid is pumped little by little or hardly at all to prevent damage to various parts due to abnormal pressure. Furthermore, if the cause of the abnormal pressure is removed, the rod l/ will automatically return to its normal stroke, and if abnormal pressure occurs inside the reciprocating pump, the stroke of the rod l/ will be immediately changed. It has an excellent effect of reducing the abnormal pressure.

【図面の簡単な説明】[Brief explanation of drawings]

添付図面は本発明の一実施例を示した４縦断ｌ→ポンプ
ケーシング、Ｓ→吸込口、６→吐出口、ｌｌ→口、ラド
、／　／’→後端後端−ｌ→往復駆動機構、２７→ばね
受部材、２７′→係止段、３ｑ→ばね受板、３６→コイ
九発条 出願人　　シャープ工業株式会社The attached drawings show an embodiment of the present invention. 4 longitudinal sections 1 → pump casing, S → suction port, 6 → discharge port, 11 → mouth, rad, / /' → rear end rear end -l → reciprocating drive mechanism, 27→Spring receiving member, 27′→Lock stage, 3q→Spring receiving plate, 36→Carp Kuhatsujo Applicant Sharp Industries, Ltd.

Claims (1)

【特許請求の範囲】[Claims] 往復動ポンプのロッドＩ／の後方を摺動可能に嵌合した
往復駆動機構λｌに、前記ロッドｌｌの周りでばね受部
材λ７を取付け、そのばね受部材２７と、ロッド−／、
／に装着したばね受板ＪＩｌとに発条３６の一端と他端
とを夫々に掛け、さらにロツード／　’／が後退移動す
る作動時のみにその後端鍔／　／’を往復駆動機構λｌ
に係合して連動されるようにしたことを特徴とする往復
動ポンプのロッド駆動装置。A spring receiving member λ7 is attached around the rod 11 to a reciprocating drive mechanism λ1 slidably fitted behind the rod I/ of the reciprocating pump, and the spring receiving member 27 and the rod -/,
One end and the other end of the spring 36 are hung on the spring receiving plate JIl attached to /, respectively, and the rear end flange / /' is connected to the reciprocating drive mechanism λl only when the rotude / '/ moves backward.
A rod drive device for a reciprocating pump, characterized in that the rod drive device is adapted to be engaged with and interlocked with.