JPH0417816Y2 - - Google Patents
Info
- Publication number
- JPH0417816Y2 JPH0417816Y2 JP1986113432U JP11343286U JPH0417816Y2 JP H0417816 Y2 JPH0417816 Y2 JP H0417816Y2 JP 1986113432 U JP1986113432 U JP 1986113432U JP 11343286 U JP11343286 U JP 11343286U JP H0417816 Y2 JPH0417816 Y2 JP H0417816Y2
- Authority
- JP
- Japan
- Prior art keywords
- housing
- liquid
- reciprocating pump
- air
- elastic body
- 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
- 239000007788 liquid Substances 0.000 claims description 41
- 230000010349 pulsation Effects 0.000 claims description 23
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- 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、空気室の容積変化により往復ポン
プの吐出圧の脈動を吸収する脈動吸収装置に関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a pulsation absorbing device that absorbs pulsations in the discharge pressure of a reciprocating pump by changing the volume of an air chamber.
第６図は従来の脈動吸収装置を具備し圃場にお
ける薬液散布に用いる動力噴霧機を示している。
クランクケース１０にはクランク軸１２が配設さ
れ、クランク軸１２は両端においてクランクケー
ス１０に軸支されている。往復ポンプ１３はクラ
ンクケース１０に結合されているシリンダパイプ
１６内に配設されるピストン１４をもち、ピスト
ン１４は基端側においてコンロツド１８を介して
クランク軸１２へ連結されている。ピストン体２
０はピストン１４の先端側の端部に遊嵌され、吸
込み口２１の液体はクランク軸１２の方へのピス
トン１４の移動に伴つてピストン体２０の内周側
の間隙を通つてポンプ室２３へ導かれる。吐出弁
２２は、ポンプ室２３と吐出口２４との間に配設
され、吐出弁２２の方へのピストン１４の移動時
に開かれ、ポンプ室２３の液体は吐出弁２２を介
して吐出口２４へ導かれる。調圧弁２６は、シリ
ンダパイプ１６の先端側に結合して吐出口２４を
区画しているシリンダ先２７に装着され、吐出口
２４内の液体の圧力が所定値を越えると、調圧弁
２６において内蔵される弁体が押し開かれ、液体
は調圧弁２６の余水口からタンクへと戻り、これ
により、往復ポンプ１３の吐出圧を一定値に調整
する。脈動吸収装置２８はハウジング３０をも
ち、ハウジング３０は、内部に空気３６を貯蔵
し、下部の接続口３２においてシリンダ先２７に
装着されている。ハウジング３０の内部空間には
接続口３２を介してシリンダ先２７内部の液体３
４が侵入し、これにより、ハウジング３０の内部
空間は上側の空気３６の容積層と下側の液体３４
の層とに分割される。圧力計３８は、ニードル弁
４０を介して吐出口２４から液体３４を送られ、
往復ポンプ１３の吐出圧を指示する。
FIG. 6 shows a power sprayer equipped with a conventional pulsation absorbing device and used for spraying chemical solutions in fields.
A crankshaft 12 is disposed in the crankcase 10, and the crankshaft 12 is pivotally supported by the crankcase 10 at both ends. The reciprocating pump 13 has a piston 14 disposed in a cylinder pipe 16 connected to a crankcase 10, and the piston 14 is connected to the crankshaft 12 via a connecting rod 18 at its base end. Piston body 2
0 is loosely fitted to the tip end of the piston 14, and as the piston 14 moves toward the crankshaft 12, the liquid passes through the gap on the inner circumferential side of the piston body 20 and enters the pump chamber 23. be led to. The discharge valve 22 is disposed between the pump chamber 23 and the discharge port 24 , and is opened when the piston 14 moves toward the discharge valve 22 , and the liquid in the pump chamber 23 flows through the discharge valve 22 to the discharge port 24 . be led to. The pressure regulating valve 26 is attached to a cylinder end 27 that is connected to the distal end side of the cylinder pipe 16 and partitions the discharge port 24. When the pressure of the liquid in the discharge port 24 exceeds a predetermined value, the built-in valve 26 The valve body is pushed open, and the liquid returns to the tank from the water outlet of the pressure regulating valve 26, thereby adjusting the discharge pressure of the reciprocating pump 13 to a constant value. The pulsation absorbing device 28 has a housing 30, which stores air 36 inside and is attached to the cylinder tip 27 at a lower connection port 32. The liquid 3 inside the cylinder tip 27 is supplied to the internal space of the housing 30 through the connection port 32.
4 enters, whereby the interior space of the housing 30 is divided into a volumetric layer of air 36 on the upper side and liquid 34 on the lower side.
It is divided into layers. The pressure gauge 38 receives the liquid 34 from the discharge port 24 via the needle valve 40,
Instructs the discharge pressure of the reciprocating pump 13.
シリンダ先内部における液体３４の圧力の脈動
に伴つて、脈動吸収装置２８における液体３４の
上面の高さが変化し、空気３６の容積が変化する
ので、往復ポンプ１３の吐出圧の脈動が吸収され
る。 As the pressure of the liquid 34 inside the cylinder tip pulsates, the height of the upper surface of the liquid 34 in the pulsation absorbing device 28 changes, and the volume of the air 36 changes, so the pulsations in the discharge pressure of the reciprocating pump 13 are absorbed. Ru.
従来の脈動吸収装置２８では、ハウジング３０
内の空気３６が、加圧されている液体３４と接触
し、また、ハウジング３０における液体３４の上
面は液体３４の圧力の脈動に伴つて激しく振動
し、空気３６と液体３４との撹乱状態となり、空
気３６が、液体３４に溶け込み、往復ポンプ１３
の運転中に時間経過とともに減少するという問題
がある。ハウジング３０内の空気３６の量の減少
は脈動吸収装置２８の機能の低下を引き起こす原
因となる。
In the conventional pulsation absorber 28, the housing 30
The air 36 inside comes into contact with the pressurized liquid 34, and the upper surface of the liquid 34 in the housing 30 vibrates violently as the pressure of the liquid 34 pulsates, creating a state of disturbance between the air 36 and the liquid 34. , the air 36 dissolves into the liquid 34 and the reciprocating pump 13
There is a problem that it decreases over time during operation. A decrease in the amount of air 36 within the housing 30 causes a decrease in the function of the pulsation absorber 28.
この考案の目的は、従来技術のこのような問題
を解決し、ハウジング内の空気が高圧液体に溶解
してハウジングから流出するのを防止して脈動圧
の吸収機能を良好に保持することができる往復ポ
ンプの脈動吸収装置を提供することである。 The purpose of this invention is to solve the problems of the prior art, to prevent the air in the housing from dissolving into the high-pressure liquid and flowing out of the housing, and to maintain a good pulsating pressure absorption function. An object of the present invention is to provide a pulsation absorbing device for a reciprocating pump.
この考案を、実施例に対応する図面の符号を使
用して説明する。
This invention will be explained using reference numerals in the drawings that correspond to the embodiments.
この考案の前提となる往復ポンプ１３の脈動吸
収装置２８では、ハウジング３０は、内部に空気
３６を貯蔵し、下部の接続部３２において往復ポ
ンプ１３の吐出部２４へ接続されている。そし
て、この考案の往復ポンプ１３の脈動吸収装置２
８では、弾性的に圧縮自在でハウジング３０内の
液面に浮上する複数個の弾性体４６が、ハウジン
グ３０内の液面全体を覆うように、ハウジング３
０内に入れられている。 In the pulsation absorbing device 28 of the reciprocating pump 13, which is the premise of this invention, the housing 30 stores air 36 inside and is connected to the discharge part 24 of the reciprocating pump 13 at a lower connecting part 32. And the pulsation absorbing device 2 of the reciprocating pump 13 of this invention
8, the housing 3 is arranged so that the plurality of elastic bodies 46, which are elastically compressible and float on the liquid level in the housing 30, cover the entire liquid level in the housing 30.
It is placed within 0.
往復ポンプ１３の運転中は、往復ポンプ１３の
吐出部２４に高圧の液体３４が吐出され、一部の
液体３４はハウジング３０の下部の接続部３２を
介してハウジング３０内へ侵入する。弾性体４６
は、液体３４の表面へ浮上するとともに、外圧に
より弾性的に収縮し、相互に密着し合つて、空気
３６と液体３４とを遮断する。これにより、空気
３６は液体３４への接触を阻まれる。
During operation of the reciprocating pump 13, high-pressure liquid 34 is discharged to the discharge portion 24 of the reciprocating pump 13, and a portion of the liquid 34 enters into the housing 30 via the connecting portion 32 at the lower part of the housing 30. Elastic body 46
float to the surface of the liquid 34 and contract elastically due to external pressure, coming into close contact with each other and blocking the air 36 and the liquid 34. This prevents air 36 from contacting liquid 34.
ハウジング３０内の空気３６は、往復ポンプ１
３の吐出圧の脈動に伴つて容積を増減し、脈動を
吸収する。 The air 36 within the housing 30 is supplied to the reciprocating pump 1
The volume is increased or decreased in accordance with the pulsation of the discharge pressure in step 3 to absorb the pulsation.
以下、この考案を第１図ないし第５図に示され
た実施例について説明する。なお、第６図の従来
装置と同じ構成部分については同符号で指示して
説明は省略する。
This invention will be described below with reference to the embodiments shown in FIGS. 1 to 5. Components that are the same as those of the conventional device shown in FIG. 6 are indicated by the same reference numerals, and their explanation will be omitted.
第１図においてハウジング３０内には、接続口
３２をシリンダ先２７に装着する前に接続口３２
から球状弾性体４６が入れ込まれる。ハウジング
３０内に入れ込まれる球状弾性体４６の個数は積
層配列でハウジング３０の内部空間を上下に仕切
ることができるに十分な個数とし、球状弾性体４
６は、比重が液体３４より小さく、外圧に関係し
て膨張、収縮して、その外径を変化させ得る材料
又は構造とする。ハウジング３０内へ接続口３２
から球状弾性体４６を入れ込んだ後、接続口３２
の内周にはプラグ４８が螺合される。 In FIG. 1, there is a connection port 32 in the housing 30 before the connection port 32 is attached to the cylinder tip 27.
A spherical elastic body 46 is inserted from the inside. The number of spherical elastic bodies 46 inserted into the housing 30 is set to be a sufficient number to partition the internal space of the housing 30 into upper and lower parts in a laminated arrangement.
6 is a material or structure that has a specific gravity lower than that of the liquid 34 and can expand and contract in relation to external pressure to change its outer diameter. Connection port 32 into housing 30
After inserting the spherical elastic body 46 from the connection port 32
A plug 48 is screwed into the inner periphery of.
第２図はプラグ４８の詳細な斜視図である。プ
ラグ４８のハウジング３０側の端面には環状溝５
０が形成され、環状溝５０からプラグ４８の下面
側まで貫通する円柱孔５２が周方向へ等角度間隔
で穿設されている。プラグ４８の外周は接続口３
２の内周に螺合するねじ部５３となつている。円
柱孔５２の径は球状弾性体４６の径よりも小さ
く、接続口３２へのプラグ４８の螺合後、球状弾
性体４６はプラグ４８の円柱孔５２を通過できな
いようになつている。 FIG. 2 is a detailed perspective view of plug 48. An annular groove 5 is formed on the end surface of the plug 48 on the housing 30 side.
0 is formed, and cylindrical holes 52 penetrating from the annular groove 50 to the lower surface side of the plug 48 are bored at equal angular intervals in the circumferential direction. The outer circumference of the plug 48 is the connection port 3
It has a threaded portion 53 that is screwed into the inner periphery of 2. The diameter of the cylindrical hole 52 is smaller than the diameter of the spherical elastic body 46, so that the spherical elastic body 46 cannot pass through the cylindrical hole 52 of the plug 48 after the plug 48 is screwed into the connection port 32.
第３図ａ，ｂは球状弾性体４６の断面構造を例
示している。ａでは球状弾性体４６は外面側のゴ
ム膜５４とこのゴム膜５４の内部に充填されてい
る加圧空気５６とからなつている。ｂでは球状弾
性体４６は中実の球状ゴム５８からなる。ｃでは
内部に多数の球状空間５６を有する発泡体からな
る。ａ，ｂ，ｃの球状弾性体４６とも外圧の変化
により径を変化させ、すなわち膨張、収縮する。 3a and 3b illustrate the cross-sectional structure of the spherical elastic body 46. FIG. In a, the spherical elastic body 46 consists of a rubber membrane 54 on the outer surface side and pressurized air 56 filled inside the rubber membrane 54. In b, the spherical elastic body 46 is made of solid spherical rubber 58. In c, it is made of a foam having a large number of spherical spaces 56 inside. The spherical elastic bodies 46 a, b, and c all change their diameters, that is, expand and contract, due to changes in external pressure.
第４図はプラグの別の例を示し、ａ，ｂはそれ
ぞれ平面図及び正面図である。プラグ６０はその
下端部に接続口３２の内周に螺合するねじ部６２
をもち、ねじ部６２から上方へ筒部６４が突出し
ている。筒部６４には周方向へ等角度間隔にスリ
ツト６６が形成されている。スリツト６６の幅は
球状弾性体４６の外径よりも小さく、球状弾性体
４６はスリツト６６を通過困難となつている。 FIG. 4 shows another example of the plug, and a and b are a plan view and a front view, respectively. The plug 60 has a threaded portion 62 at its lower end that is screwed into the inner circumference of the connection port 32.
A cylindrical portion 64 projects upward from the threaded portion 62. Slits 66 are formed in the cylindrical portion 64 at equal angular intervals in the circumferential direction. The width of the slit 66 is smaller than the outer diameter of the spherical elastic body 46, making it difficult for the spherical elastic body 46 to pass through the slit 66.
第５図は第４図のプラグ６０が接続口３２に装
着された状態を示している。プラグ６０の上端は
ハウジング３０内の液体３４の上面近傍に達して
いる。 FIG. 5 shows a state in which the plug 60 of FIG. 4 is attached to the connection port 32. The upper end of the plug 60 reaches near the upper surface of the liquid 34 within the housing 30.
実施例の作用について説明する。 The operation of the embodiment will be explained.
往復ポンプ１３の運転に伴つて、高圧の液体３
４がプラグ４８又は６０の円柱孔５２又はスリツ
ト６６からハウジング３０の内部空間へ侵入す
る。球状弾性体４６は液体３４に浮くので、球状
弾性体４６は、ハウジング３０において液体３４
の表面に積層配列で並び、液体３４と空気３６と
の境界を仕切る。また液体３４及び空気３６は高
圧となつているので、球状弾性体４６は圧縮状態
となり、積層配列の各球状弾性体４６は互いに密
着状態になつている。これにより、液体３４と空
気３６との接触は遮断され、液体３４への空気の
溶け込みは防止される。 As the reciprocating pump 13 operates, high pressure liquid 3
4 enters the interior space of the housing 30 through the cylindrical hole 52 or slit 66 of the plug 48 or 60. Since the spherical elastic body 46 floats on the liquid 34, the spherical elastic body 46 floats on the liquid 34 in the housing 30.
are arranged in a stacked arrangement on the surface of the liquid 34 to partition the boundary between the liquid 34 and the air 36. Further, since the liquid 34 and the air 36 are under high pressure, the spherical elastic bodies 46 are in a compressed state, and the spherical elastic bodies 46 in the stacked arrangement are in close contact with each other. This blocks contact between the liquid 34 and the air 36, and prevents air from dissolving into the liquid 34.
吐出口２４の液体３４の圧力は脈動するが、こ
の脈動に伴つてハウジング３０内の液体３４の上
面及び球状弾性体４６の積層配列の高さが上下動
し、空気３６の容積が変化する。この結果、往復
ポンプ１３の吐出圧の脈動が吸収される。 The pressure of the liquid 34 in the discharge port 24 pulsates, and with this pulsation, the upper surface of the liquid 34 in the housing 30 and the height of the stacked arrangement of the spherical elastic bodies 46 move up and down, and the volume of the air 36 changes. As a result, pulsations in the discharge pressure of the reciprocating pump 13 are absorbed.
もちろん、球状弾性体４６自身の変形も脈動吸
収に寄与することは言うまでもない。 Of course, it goes without saying that the deformation of the spherical elastic body 46 itself also contributes to pulsation absorption.
この考案では、弾性的に圧縮自在でハウジング
内の液面に浮上する複数個の弾性体が、ハウジン
グ内の液面全体を覆うように、ハウジング内に入
れられ、往復ポンプの運転中は、相互に密着し
て、空気層と液体層とを遮断して、両者の接触を
阻止しているので、液体への空気に溶解を防止
し、空気の消失を仰制することができる。
In this device, a plurality of elastic bodies that are elastically compressible and float on the liquid level inside the housing are placed inside the housing so as to cover the entire liquid level inside the housing, and are mutually connected to each other during operation of the reciprocating pump. Since it is in close contact with the air layer and the liquid layer and prevents contact between the two, it is possible to prevent the air from dissolving in the liquid and prevent the air from disappearing.
第１図ないし第５図はこの考案の実施例を示
し、第１図は脈動吸収装置の断面図、第２図は第
１図のプラグの詳細な斜視図、第３図は球状弾性
体の断面図、第４図はハウジングの接続口に装着
されるプラグの別の例を示す図、第５図は第４図
のプラグを装着されている脈動吸収装置の断面
図、第６図は動力噴霧機における従来の脈動吸収
装置を示す断面図である。
１３……往復ポンプ、２４……吐出口（吐出
部）、２８……脈動吸収装置、３０……ハウジン
グ、３２……接続口、３４……液体、３６……空
気、４６……球状弾性体（弾性体。）
Figures 1 to 5 show an embodiment of this invention, with Figure 1 being a sectional view of the pulsation absorbing device, Figure 2 being a detailed perspective view of the plug in Figure 1, and Figure 3 being a spherical elastic body. 4 is a cross-sectional view showing another example of a plug attached to the connection port of the housing, FIG. 5 is a sectional view of a pulsation absorber equipped with the plug shown in FIG. 4, and FIG. 6 is a diagram showing a power It is a sectional view showing a conventional pulsation absorption device in a spray machine. 13... Reciprocating pump, 24... Discharge port (discharge part), 28... Pulsation absorber, 30... Housing, 32... Connection port, 34... Liquid, 36... Air, 46... Spherical elastic body (Elastic body.)
Claims (1)
し、下部の接続部３２において往復ポンプ１３
の吐出部２４へ接続されている往復ポンプ１３
の脈動吸収装置２８において、弾性的に圧縮自
在で前記ハウジング３０内の液面に浮上する複
数個の弾性体４６が、前記ハウジング３０内の
液面全体を覆うように、前記ハウジング３０内
に入れられていることを特徴とする往復ポンプ
の脈動吸収装置。 (2) 前記弾性体４６は、前記接続口を通過可能で
あり、前記弾性体４６の通過を阻止する通孔５
２，６６をもつプラグ４８，６０が前記接続口
３２に着脱可能に装着されていることを特徴と
する実用新案登録請求の範囲第１項記載の往復
ポンプの脈動吸収装置。[Claims for Utility Model Registration] (1) The housing 30 stores air 36 inside, and the reciprocating pump 13 is connected to the lower connecting portion 32.
reciprocating pump 13 connected to the discharge part 24 of
In the pulsation absorbing device 28, a plurality of elastic bodies 46 that are elastically compressible and float on the liquid level in the housing 30 are inserted into the housing 30 so as to cover the entire liquid level in the housing 30. A pulsation absorbing device for a reciprocating pump, characterized in that: (2) The elastic body 46 can pass through the connection port and has a through hole 5 that prevents the elastic body 46 from passing through.
The pulsation absorbing device for a reciprocating pump according to claim 1, wherein plugs 48 and 60 having numbers 2 and 66 are removably attached to the connection port 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986113432U JPH0417816Y2 (en) | 1986-07-25 | 1986-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986113432U JPH0417816Y2 (en) | 1986-07-25 | 1986-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321777U JPS6321777U (en) | 1988-02-13 |
| JPH0417816Y2 true JPH0417816Y2 (en) | 1992-04-21 |
Family
ID=30995233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986113432U Expired JPH0417816Y2 (en) | 1986-07-25 | 1986-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0417816Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240182A (en) * | 2002-02-05 | 2003-08-27 | Kishaku Kaku | Branch device installed in service water pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5442242Y2 (en) * | 1976-12-16 | 1979-12-08 |
-
1986
- 1986-07-25 JP JP1986113432U patent/JPH0417816Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240182A (en) * | 2002-02-05 | 2003-08-27 | Kishaku Kaku | Branch device installed in service water pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321777U (en) | 1988-02-13 |
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