JPH0437270Y2 - - Google Patents
Info
- Publication number
- JPH0437270Y2 JPH0437270Y2 JP1984184529U JP18452984U JPH0437270Y2 JP H0437270 Y2 JPH0437270 Y2 JP H0437270Y2 JP 1984184529 U JP1984184529 U JP 1984184529U JP 18452984 U JP18452984 U JP 18452984U JP H0437270 Y2 JPH0437270 Y2 JP H0437270Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- small diameter
- diameter
- cylinder
- chamber
- 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
- 238000012856 packing Methods 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Electromagnetic Pumps, Or The Like (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
この考案は農業用として用いられ灌水用ポンプ
及び農薬散布に適したポンプであり、更に農機具
やトラクタ、コンバイン、テーラー、トラツク等
に対し、高圧洗浄を行なうのに好適なポンプであ
り、薬剤や肥料等を機体から洗い流すことがで
き、これにより、上記機械器具の耐久性の向上に
寄与しうるものである。そして高圧液の吐出時に
高圧用パツキングに背圧を調整可能に作用させる
ことができ、パツキング前後面の圧力勾配を小と
し、その寿命の延長を可能としたものである。[Detailed description of the invention] [Industrial application field] This invention is a pump suitable for irrigation pumps and pesticide spraying, which is used for agriculture, and is also suitable for high pressure pumps for agricultural machinery, tractors, combine harvesters, tailors, trucks, etc. This pump is suitable for cleaning, and can wash away chemicals, fertilizers, etc. from the machine body, thereby contributing to improving the durability of the above-mentioned mechanical equipment. Further, back pressure can be applied to the high-pressure packing in an adjustable manner when high-pressure liquid is discharged, and the pressure gradient between the front and rear surfaces of the packing can be reduced, thereby making it possible to extend its life.
[従来の技術]
従来の往復ポンプは、クランクケースにクラン
ク軸を介して軸支される連接棒に一種類の吐出圧
力及び吐出量を発生しうるピストン手段がピン連
結され、ピストン手段はクランクケースに固着さ
れるシリンダ体内に水気密状態で往復動可能に摺
設される。[Prior Art] In a conventional reciprocating pump, a piston means capable of generating one type of discharge pressure and discharge amount is connected by a pin to a connecting rod that is supported via a crankshaft in a crankcase. It is slidably installed in a water-tight manner so that it can reciprocate within a cylinder body that is fixed to the cylinder body.
[考案が解決しようとする課題]
したがつて従来の往復ポンプでは、限定された
仕様範囲、例えば圧力の上限が決められていて、
その範囲内において、所要動力と流速限界の許容
できる範囲で吸水量を決定し、使用している。そ
こでこの範囲を大巾に超えるときは、二台のポン
プを独立して使用するが、あるいはクラツク等に
よつて並列に接続して使用しなければならなかつ
た。しかしこの方式では往復ポンプを二台必要と
し、設置場所も大きくとる必要があり、配管も複
雑となり、また経費もかかる等の問題がある。さ
らに従来の往復ポンプにおいては、シリンダ内を
往復するプランジヤの周縁に摺動し、ポンプ室を
画設するシールパツキンの内部には、吐出圧力が
高くする程大きな応力勾配が生じ、十分な耐久性
や、シール性能を保持できなかつた。[Problem that the invention aims to solve] Therefore, conventional reciprocating pumps have a limited specification range, such as an upper limit of pressure.
Within this range, the water absorption amount is determined and used within the allowable range of the required power and flow rate limit. Therefore, when exceeding this range by a wide range, it was necessary to use two pumps independently, or to connect them in parallel using a crank or the like. However, this method requires two reciprocating pumps, requires a large installation space, requires complicated piping, and is expensive. Furthermore, in conventional reciprocating pumps, the higher the discharge pressure, the greater the stress gradient that occurs inside the seal gasket that slides on the periphery of the plunger that reciprocates within the cylinder and defines the pump chamber, ensuring sufficient durability. Otherwise, the sealing performance could not be maintained.
[課題を解決するための手段]
この考案は以上に述べた事情に鑑みなされたも
ので、クランクケース1にクランク軸4を介して
軸支した連接棒5と、この連接棒5の先端にピン
連結しかつシリンダ体8内に往復摺動可能とした
ピストン手段11とを備えてなる往復ポンプであ
つて、前記シリンダ体8はシリンダ大径部6とシ
リンダ小径部7とを備えてなり、これらシリンダ
大径部6とシリンダ小径部7には、前記ピストン
手段11を構成するピストン大径部9とピストン
小径部10とを、それぞれパツキング13,14
を介して水気密状態で摺設し、前記シリンダ大径
部6に前記ピストン大径部9とピストン小径部1
0とによつて画設した大径部室18を形成し、こ
の大径部室18に吸入弁19を有する大径部吸入
口20及び吐出弁21を有する大径部吐出口22
を設け、前記シリンダ小径部7先端側にピストン
小径部10によつて画設した小径部室23を形成
し、この小径部室23に吐出弁24を有する小径
部吐出口25を設け、前記ピストン小径部10に
はその外側に間隔を保つて軸方向に移動可能に遊
嵌した円筒形のスリーブ10aを介して前記パツ
キング14に摺接され、ピストン小径部10の先
端部にはスリーブ10aの抜け出しを阻止しかつ
吸入口26を形成した阻止部材10bを連結し、
スリーブ10aの基端部には前記吸入口26と大
径部室18とをスリーブ10a内を介して開閉自
在に連通しうる吸入弁27を形成し、前記小径部
吐出口25を開閉手段29を備える連通路28に
よつて前記大径部吐出口22に連通すると共に、
分岐路30を介して外部に連通し、かつ前記大径
部吐出口22の吐出側と前記開閉手段29との間
に調圧手段を設けてなることを特徴とする往復ポ
ンプを提案するものである。[Means for solving the problem] This invention was devised in view of the above-mentioned circumstances, and includes a connecting rod 5 that is pivotally supported on the crankcase 1 via the crankshaft 4, and a pin at the tip of the connecting rod 5. It is a reciprocating pump comprising a piston means 11 connected to each other and capable of reciprocally sliding within a cylinder body 8, the cylinder body 8 comprising a cylinder large diameter portion 6 and a cylinder small diameter portion 7. The cylinder large diameter part 6 and the cylinder small diameter part 7 are provided with packings 13 and 14, respectively, of a piston large diameter part 9 and a piston small diameter part 10 that constitute the piston means 11.
The piston large diameter part 9 and the piston small diameter part 1 are slidably installed in a water-tight manner through the cylinder large diameter part 6.
A large-diameter chamber 18 is defined by the large-diameter chamber 18, and the large-diameter chamber 18 includes a large-diameter suction port 20 having a suction valve 19 and a large-diameter discharge port 22 having a discharge valve 21.
A small-diameter chamber 23 defined by the piston small-diameter section 10 is formed on the tip side of the cylinder small-diameter section 7, and a small-diameter discharge port 25 having a discharge valve 24 is provided in the small-diameter chamber 23. 10 is in sliding contact with the packing 14 via a cylindrical sleeve 10a which is loosely fitted to the outer side of the sleeve 10a so as to be movable in the axial direction with a space maintained therebetween. and connecting the blocking member 10b in which the suction port 26 is formed,
A suction valve 27 is formed at the proximal end of the sleeve 10a, and the suction valve 27 can open and close the suction port 26 and the large diameter chamber 18 in communication with each other through the inside of the sleeve 10a, and a means 29 for opening and closing the small diameter discharge port 25 is provided. communicates with the large-diameter discharge port 22 through a communication passage 28, and
The present invention proposes a reciprocating pump which communicates with the outside through a branch passage 30 and is characterized in that a pressure regulating means is provided between the discharge side of the large-diameter discharge port 22 and the opening/closing means 29. be.
[作用]
すなわちこの考案の上記構造の往復ポンプにお
いて、ピストン小径部10とピストン大径部9と
を一体形成したピストン手段11が、それぞれ小
径部室23と大径部室18を進退し、それぞれ吐
出弁24と吐出弁21、連通路28、開閉手段2
9を介して分岐路30で合流し、前記連通路28
には調圧手段31を介装している。[Function] That is, in the reciprocating pump of this invention having the above structure, the piston means 11, which is formed integrally with the small diameter piston portion 10 and the large diameter piston portion 9, advances and retreats in the small diameter portion chamber 23 and the large diameter portion chamber 18, respectively, and the discharge valve 24, discharge valve 21, communication path 28, opening/closing means 2
9 to merge at a branch path 30 and connect to the communication path 28.
A pressure regulating means 31 is interposed therein.
したがつて低圧大流量のときは開閉手段29を
開として、ピストン小径部10とピストン大径部
9とによる送液を行ない、調圧手段31によつて
調圧し、高圧小流量のときは開閉手段29を閉と
し、分岐路30に連通する配管中に配設した図示
しない調圧手段により設定した圧力での吐出を行
なう。 Therefore, when the pressure is low and the flow rate is large, the opening/closing means 29 is opened, and the piston small diameter section 10 and the piston large diameter section 9 are used to send liquid.The pressure regulating means 31 is used to regulate the pressure, and when the pressure is high and the flow rate is small, the opening/closing means 29 is opened. The means 29 is closed, and discharge is performed at a pressure set by a pressure regulating means (not shown) disposed in a pipe communicating with the branch passage 30.
上記低圧大流量の吐出と高圧小流量の吐出とは
開閉手段の操作により選択でき、また高圧小流量
吐出の際は、調圧手段31の調整により、作動圧
力に応じたパツキング14の背圧を設定できるも
のである。 The above-mentioned low-pressure, large-flow discharge and high-pressure, small-flow discharge can be selected by operating the opening/closing means, and when high-pressure, small-flow discharge is performed, the back pressure of the packing 14 is adjusted according to the operating pressure by adjusting the pressure regulating means 31. It is configurable.
[実施例]
以下添付図面に基づいてこの考案の一実施例を
説明する。[Example] An example of this invention will be described below based on the accompanying drawings.
添付図面はこの考案による往復ポンプを示す断
面図で、図中1は下方に脚体2が備えて床等3に
設置可能なクランクケースで、クランクケース1
にはクランク軸4を介して連接棒5を軸支する。
前記クランクケース1の先端部には、基端部にシ
リンダ大径部6、先端部にシリンダ小径部7を一
体的に形成したシリンダ体8を固着する。 The attached drawing is a cross-sectional view showing a reciprocating pump according to this invention. In the drawing, 1 is a crankcase that has legs 2 at the bottom and can be installed on a floor or the like 3.
A connecting rod 5 is pivotally supported via a crankshaft 4.
A cylinder body 8 is fixed to the distal end of the crankcase 1, which is integrally formed with a cylinder large diameter section 6 at the base end and a cylinder small diameter section 7 at the distal end.
前記連接棒5の先端部には、ピストン大径部9
とその先端部に一体的に形成したピストン小径部
10とを備えてなるピストン手段11を、ピン1
2によつて連結する。ピストン手段11のピスト
ン大径部9はピストン小径部10より外径を大
し、かつピストン大径部9は前記シリンダ大径部
6内に、また前記ピストン小径部10には後述す
るスリーブ10aを遊嵌し、前記シリンダ小径部
7内にそれぞれVパツキング13,14を介して
水気密状態で往復動可能に摺設する。なおパツキ
ング13及び14はそれぞれグランドねじ15又
は圧縮ばね16によつてシリンダ大径部6又はシ
リンダ小径部7に圧縮状態で固定する。またシリ
ンダ体8とクランクケース1との間に、オイルシ
ール17を介在させ、クランクケース1内のオイ
ルがシリンダ体8内に侵入するのを防止してい
る。 A piston large diameter portion 9 is provided at the tip of the connecting rod 5.
A piston means 11 comprising a piston small diameter portion 10 integrally formed at the tip thereof is attached to a pin 1.
Connected by 2. The piston large diameter portion 9 of the piston means 11 has a larger outer diameter than the piston small diameter portion 10, and the piston large diameter portion 9 is disposed within the cylinder large diameter portion 6, and the piston small diameter portion 10 is provided with a sleeve 10a to be described later. They are loosely fitted and slidably reciprocated in the cylinder small diameter portion 7 via V packings 13 and 14 in a water-tight manner. The packings 13 and 14 are fixed in a compressed state to the cylinder large diameter section 6 or the cylinder small diameter section 7 by a gland screw 15 or a compression spring 16, respectively. Further, an oil seal 17 is interposed between the cylinder body 8 and the crankcase 1 to prevent oil in the crankcase 1 from entering the cylinder body 8.
前記シリンダ大径部6には、ピストン大径部9
とピストン小径部10とによつて画設した大径部
室18を形成し、この大径部室18には吸入弁1
9を備えた大径部吸入口20を形成すると共に、
吐出弁21を備えた大径部吐出口22を形成す
る。 The cylinder large diameter portion 6 includes a piston large diameter portion 9.
A large-diameter chamber 18 is defined by the piston small-diameter section 10 and a suction valve 1 is provided in the large-diameter chamber 18.
While forming a large diameter suction port 20 with 9,
A large-diameter discharge port 22 provided with a discharge valve 21 is formed.
前記シリンダ小径部10の先端側には、前記ピ
ストン小径部10によつて画設した小径部室23
を形成する。この小径部室23には吐出弁24を
有する小径部吐出口25を形成する。 A small diameter chamber 23 defined by the piston small diameter section 10 is provided on the tip side of the cylinder small diameter section 10.
form. A small-diameter discharge port 25 having a discharge valve 24 is formed in the small-diameter chamber 23 .
また前記ピストン小径部10はその外側に間隔
を保つて軸方向に移動可能に遊嵌した円筒形の前
述したスリーブ10aを介して、前記パツキング
14に摺接する構成とし、ピストン小径部10の
先端部には、スリーブ10aの抜け出しを阻止す
る円板状の阻止部材10bをねじ連結し、この阻
止部材10bにはスリーブ10aの筒内と前記小
径部室23とを連通する小径部吸入口26を形成
し、またスリーブ10aの基端部には、小径部吸
入口26と大径部室18とをスリーブ10a内を
介して開閉可能に連通しうる吸入弁27を形成す
る。 Further, the piston small diameter portion 10 is configured to be in sliding contact with the packing 14 via the aforementioned cylindrical sleeve 10a which is loosely fitted to the outside thereof so as to be movable in the axial direction with a space maintained therebetween, and the tip of the piston small diameter portion 10 A disk-shaped blocking member 10b that prevents the sleeve 10a from coming off is connected by screws, and a small-diameter suction port 26 is formed in the blocking member 10b to communicate the inside of the cylinder of the sleeve 10a and the small-diameter chamber 23. Further, a suction valve 27 is formed at the proximal end of the sleeve 10a to allow the small diameter suction port 26 and the large diameter chamber 18 to communicate with each other in an openable and closable manner through the inside of the sleeve 10a.
前記大径部吐出口22と小径部吐出口25は、
シリンダ小径部7の側方に形成した連通路28に
よつて互いに連通させ、連通路28内にはこの連
通路28を閉鎖可能とする開閉手段である切換コ
ツク29を内設する。前記小径部吐出口25は前
記連通路28から分岐した分岐路30によつて外
部に連通する。また前記大径部吐出口22と切換
コツク29との間の前記連通路28内には、調圧
手段である調圧弁31を装着する。なお調圧弁3
1に示す32は余水口である。 The large diameter outlet 22 and the small diameter outlet 25 are
They are communicated with each other by a communication passage 28 formed on the side of the cylinder small diameter portion 7, and a switching cock 29 which is an opening/closing means for closing the communication passage 28 is provided inside the communication passage 28. The small diameter discharge port 25 communicates with the outside through a branch path 30 branched from the communication path 28. Further, a pressure regulating valve 31 serving as a pressure regulating means is installed in the communication passage 28 between the large diameter discharge port 22 and the switching cock 29. In addition, pressure regulating valve 3
32 shown in 1 is a spillway.
この考案による往復ポンプは以上に述べたよう
であるから、クランク軸4の回転によるピストン
大径部9及びピストン小径部10の往復動によ
り、大径部吸入口20から流体を大径部室18内
に吸入し、大径部吐出口22から連通路28内に
吐出する。その際の吐出量をQ1とする。 Since the reciprocating pump according to this invention is as described above, the fluid is pumped into the large diameter chamber 18 from the large diameter suction port 20 by the reciprocating movement of the piston large diameter section 9 and the piston small diameter section 10 due to the rotation of the crankshaft 4. and discharged into the communication passage 28 from the large-diameter discharge port 22. The discharge amount at that time is defined as Q1.
また前記ピストン手段11の往復動に際し、ピ
ストン小径部10が図において右行した場合に
は、スリーブ10aがパツキング14との間の摩
擦力によつてピストン小径部10に対し相対的に
左行し、スリーブ10aの基端部の吸入弁27が
開とされ、小径部吸入口26を介して前記大径部
室18から流体が小径部室23内に流入し、また
ピストン小径部10が左行する際には、スリーブ
10aが前記と逆に相対的に右行し、前記吸入弁
27が閉となり、小径部室23内の流体を小径部
吐出口25を介して前記分岐路30を通つて外部
に排出する。この際の吐出量をQ2とする。 Further, when the piston small diameter portion 10 moves to the right in the figure during the reciprocating motion of the piston means 11, the sleeve 10a moves to the left relative to the piston small diameter portion 10 due to the frictional force between the sleeve 10a and the packing 14. When the suction valve 27 at the proximal end of the sleeve 10a is opened, fluid flows from the large diameter chamber 18 into the small diameter chamber 23 through the small diameter suction port 26, and when the piston small diameter section 10 moves to the left. In this case, the sleeve 10a moves relatively to the right in the opposite direction, the suction valve 27 closes, and the fluid in the small diameter chamber 23 is discharged to the outside through the small diameter discharge port 25 and the branch passage 30. do. The discharge amount at this time is defined as Q2.
いま分岐路30に連通する管路を設け、その一
部に調圧手段(図示しない)を配設し、この調圧
手段の調節圧力をP2(>P1)となるように設
定する。ここでP1は調圧弁31の設定圧力とす
る。 Now, a pipe line communicating with the branch line 30 is provided, a pressure regulating means (not shown) is disposed in a part of the pipe line, and the regulating pressure of this pressure regulating means is set to P2 (>P1). Here, P1 is the set pressure of the pressure regulating valve 31.
前記切換コツク29のハンドル29aの操作に
よつて連通路28を開又は閉操作することによ
り、切換コツク29が開のとき、吐出圧力はP
1、排出量は約Q1+Q2の、また切換コツク2
9が閉のとき吐出圧力はP2、吐出量は約Q2の
二種類の流体を排出することができる。 By operating the handle 29a of the switching pot 29 to open or close the communication passage 28, when the switching pot 29 is open, the discharge pressure becomes P.
1. The discharge amount is approximately Q1 + Q2, and the switching rate is 2.
When 9 is closed, two types of fluid can be discharged: the discharge pressure is P2, and the discharge amount is about Q2.
上述の例では分岐路30に連通する管路の一部
に調圧弁31を配設したが、ポンプと一体化し、
分岐路近傍の小径ピストン2次側(吐出側)に調
圧弁を配設しても同様の効果を得ることができ
る。また切換コツク29を閉とした場合には、調
圧弁31により設定された圧力P1は、パツキン
グ14に背圧として作用することになり、したが
つて高圧P2の液体を吐出する際には、パツキン
グ14の前後の圧力勾配を小とすることができ、
またスリーブ10aとパツキング14との接触を
より緊密なものとすることになり、パツキング1
4の耐久性及びシール性能を向上させることがで
き、安定した高圧流体排出に寄与することができ
る。 In the above example, the pressure regulating valve 31 was arranged in a part of the pipe line communicating with the branch line 30, but it is integrated with the pump,
A similar effect can be obtained by disposing a pressure regulating valve on the secondary side (discharge side) of the small diameter piston near the branch passage. Furthermore, when the switching pot 29 is closed, the pressure P1 set by the pressure regulating valve 31 acts on the packing 14 as back pressure. The pressure gradient before and after 14 can be made small,
Further, the contact between the sleeve 10a and the packing 14 is made closer, and the packing 14 is brought into closer contact with the sleeve 10a.
The durability and sealing performance of No. 4 can be improved, and it can contribute to stable high-pressure fluid discharge.
[考案の効果]
この考案による往復ポンプによれば、以下のよ
うな効果を有するものである。[Effects of the invention] The reciprocating pump according to this invention has the following effects.
(1) 一台の往復ポンプのみで低圧大容量(P1,
Q1+Q2)と高圧小容量P2,Q2の、より
巾の広い使用をすることができる。(1) Low pressure and large capacity with only one reciprocating pump (P1,
Q1+Q2) and high voltage and small capacity P2 and Q2 can be used more widely.
(2) ピストン小径部10のパツキング14には大
径部室18の圧力P1が背圧として作用するた
め、前記ばね16による圧縮力をより大とする
ことができ、したがつて、パツキング14とス
リーブ10aとの接触圧を高め、漏れ防止に寄
与すると共に、パツキング14の高圧側と低圧
側との間の圧力勾配を小とすることができ、パ
ツキング14の耐久性をより向上することがで
きる。(2) Since the pressure P1 of the large diameter section chamber 18 acts as back pressure on the packing 14 of the piston small diameter section 10, the compressive force by the spring 16 can be increased, and therefore the packing 14 and the sleeve The contact pressure with the packing 10a is increased, contributing to leakage prevention, and the pressure gradient between the high pressure side and the low pressure side of the packing 14 can be reduced, and the durability of the packing 14 can be further improved.
(3) 大径部室18の圧力は、調圧手段31によつ
て適宜調節可能とされ、スリーブ10aの外周
縁に作用し、送液時のスリーブの膨大しようと
する変形を抑えることから、より肉厚の薄いス
リーブの使用が可能となり、したがつて、阻止
部材10bと吸入弁27との間を往復し、衝突
を繰り返えすスリーブの質量を小とすることが
できるので、衝突により生ずる騒音が低減され
ると同時に、吸水弁の変形も小とでき、ポンプ
の耐久性向上に寄与できる。(3) The pressure in the large diameter chamber 18 can be adjusted appropriately by the pressure regulating means 31, and acts on the outer peripheral edge of the sleeve 10a, suppressing the deformation of the sleeve from expanding during liquid feeding. It is possible to use a sleeve with a thin wall, and therefore the mass of the sleeve, which reciprocates between the blocking member 10b and the suction valve 27 and repeatedly collides with it, can be reduced, thereby reducing noise caused by collisions. At the same time, deformation of the water intake valve can be reduced, contributing to improved durability of the pump.
(4) パツキング14は高低圧両側から揚液で潤滑
されるので耐久性が向上する。(4) Since the packing 14 is lubricated by pumped liquid from both high and low pressure sides, durability is improved.
添付図面はこの考案による往復ポンプを示す断
面図である。
なお図において、1……クランクケース、4…
…クランク軸、5……連接棒、8……シリンダ
体、6……シリンダ大径部、7……シリンダ小径
部、9……ピストン大径部、10……ピストン小
径部、11……ピストン手段、13,14……パ
ツキング、18……大径部室、19……吸入弁、
20……大径部吸入口、21……吐出弁、22…
…大径部吐出口、23……小径部室、24……吐
出弁、25……小径部吐出口、26……小径部吸
入口、27……吸入弁、28……連通路、29…
…切換コツク(開閉手段)、30……分岐路、3
1……調圧弁(調圧手段)。
The accompanying drawing is a sectional view showing a reciprocating pump according to this invention. In the figure, 1... crankcase, 4...
...Crankshaft, 5...Connecting rod, 8...Cylinder body, 6...Cylinder large diameter part, 7...Cylinder small diameter part, 9...Piston large diameter part, 10...Piston small diameter part, 11...Piston Means, 13, 14... Packing, 18... Large diameter chamber, 19... Suction valve,
20...Large diameter suction port, 21...Discharge valve, 22...
... Large diameter part discharge port, 23 ... Small diameter part chamber, 24 ... Discharge valve, 25 ... Small diameter part discharge port, 26 ... Small diameter part suction port, 27 ... Suction valve, 28 ... Communication passage, 29 ...
...Switching switch (opening/closing means), 30... Branch road, 3
1...Pressure regulating valve (pressure regulating means).
Claims (1)
した連接棒5と、この連接棒5の先端にピン連結
しかつシリンダ体8内に往復摺動可能としたピス
トン手段11とを備えてなる往復ポンプであつ
て、前記シリンダ体8はシリンダ大径部6とシリ
ンダ小径部7とを備えてなり、これらシリンダ大
径部6とシリンダ小径部7には、前記ピストン手
段11を構成するピストン大径部9とピストン小
径部10とを、それぞれパツキング13,14を
介して水気密状態で摺設し、前記シリンダ大径部
6に前記ピストン大径部9とピストン小径部10
とによつて画設した大径部室18を形成し、この
大径部室18に吸入弁19を有する大径部吸入口
20及び吐出弁21を有する大径部吐出口22を
設け、前記シリンダ小径部7先端側にピストン小
径部10によつて画設した小径部室23を形成
し、この小径部室23に吐出弁24を有する小径
部吐出口25を設け、前記ピストン小径部10に
はその外側に間隔を保つて軸方向に移動可能に遊
嵌した円筒形のスリーブ10aを介して前記パツ
キング14に摺接され、ピストン小径部10の先
端部にはスリーブ10aの抜け出しを阻止しかつ
吸入口26を形成した阻止部材10bを連結し、
スリーブ10aの基端部には前記吸入口26と大
径部室18とをスリーブ10a内を介して開閉自
在に連通しうる吸入弁27を形成し、前記小径部
吐出口25を開閉手段29を備える連通路28に
よつて前記大径部吐出口22に連通すると共に、
分岐路30を介して外部に連通し、かつ前記大径
部吐出口22の吐出側と前記開閉手段29との間
に調圧手段31を設けてなることを特徴とする往
復ポンプ。 A reciprocating pump comprising a connecting rod 5 pivotally supported on the crankcase 1 via a crankshaft 4, and a piston means 11 connected to the tip of the connecting rod 5 with a pin and capable of reciprocating sliding within the cylinder body 8. The cylinder body 8 includes a cylinder large diameter part 6 and a cylinder small diameter part 7, and the cylinder large diameter part 6 and the cylinder small diameter part 7 include a piston large diameter part constituting the piston means 11. 9 and the piston small diameter part 10 are slid together in a water-tight manner through packings 13 and 14, respectively, and the piston large diameter part 9 and the piston small diameter part 10 are attached to the cylinder large diameter part 6.
A large-diameter chamber 18 is formed, and a large-diameter suction port 20 having a suction valve 19 and a large-diameter discharge port 22 having a discharge valve 21 are provided in the large-diameter chamber 18. A small diameter chamber 23 defined by the piston small diameter section 10 is formed on the tip side of the section 7, and a small diameter section discharge port 25 having a discharge valve 24 is provided in this small diameter section chamber 23. A cylindrical sleeve 10a is fitted loosely in the axial direction with a space maintained, and is slidably contacted with the packing 14, and a suction port 26 is provided at the tip of the small diameter portion 10 of the piston to prevent the sleeve 10a from coming off. Connecting the formed blocking members 10b,
A suction valve 27 is formed at the proximal end of the sleeve 10a, and the suction valve 27 can open and close the suction port 26 and the large diameter chamber 18 in communication with each other through the inside of the sleeve 10a, and a means 29 for opening and closing the small diameter discharge port 25 is provided. communicates with the large-diameter discharge port 22 through a communication passage 28, and
A reciprocating pump characterized in that a pressure regulating means 31 is connected to the outside via a branch passage 30 and is provided between the discharge side of the large-diameter discharge port 22 and the opening/closing means 29.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984184529U JPH0437270Y2 (en) | 1984-12-05 | 1984-12-05 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984184529U JPH0437270Y2 (en) | 1984-12-05 | 1984-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6199680U JPS6199680U (en) | 1986-06-25 |
JPH0437270Y2 true JPH0437270Y2 (en) | 1992-09-02 |
Family
ID=30742017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1984184529U Expired JPH0437270Y2 (en) | 1984-12-05 | 1984-12-05 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0437270Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3706785A1 (en) * | 1987-03-03 | 1988-09-15 | Uraca Pumpen | PLUNGER PUMP |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4216689Y1 (en) * | 1965-10-25 | 1967-09-26 | ||
JPS5126165A (en) * | 1974-08-26 | 1976-03-03 | Hiromi Yaoi | SHIRUYOKETSUKIKAJITSURUISHOKUYOTOKUSHUSUPUUN |
-
1984
- 1984-12-05 JP JP1984184529U patent/JPH0437270Y2/ja not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4216689Y1 (en) * | 1965-10-25 | 1967-09-26 | ||
JPS5126165A (en) * | 1974-08-26 | 1976-03-03 | Hiromi Yaoi | SHIRUYOKETSUKIKAJITSURUISHOKUYOTOKUSHUSUPUUN |
Also Published As
Publication number | Publication date |
---|---|
JPS6199680U (en) | 1986-06-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5848880A (en) | Axial valve arrangement for a high pressure plunger pump | |
US4161308A (en) | Switching valve assembly for fluid motor-driven injector pump | |
US5022832A (en) | Ring valve type air compressor | |
CA2251105A1 (en) | Reciprocating liquid pump with disc check valve | |
AU2002225077A1 (en) | Electronic micro-pump | |
CA1122479A (en) | Double-acting differential piston supply pump | |
GB2004585A (en) | A manual reciprocating pump for the atomization of liquids, such as perfumes and other liquids | |
CA2041511A1 (en) | Dual-acting, reciprocating piston pump | |
JPH0437270Y2 (en) | ||
US4561828A (en) | Pump for forwarding liquids | |
ES2187231A1 (en) | Fluid pump dispenser for dispensing liquid soaps, variable viscosity gel-type products etc. | |
US4840548A (en) | High pressure plunger pump | |
US2749845A (en) | Pump | |
JPH0427392B2 (en) | ||
JPH0442530Y2 (en) | ||
JPS6119983A (en) | Plunger pump | |
JPH0645664Y2 (en) | Reciprocating pump | |
SU510586A1 (en) | Piston pump | |
JP2517427Y2 (en) | Piston pump | |
JPH0320550Y2 (en) | ||
KR102131093B1 (en) | pesticide for spraying Pumping device | |
JPS5916543Y2 (en) | Plunger type reciprocating pump | |
RU2699598C1 (en) | Pump plunger pneumatic drive unit | |
JPH048316Y2 (en) | ||
US3463053A (en) | Relief valve for fluid motor |