JPH0746777Y2 - Reciprocating pump pressure regulator structure - Google Patents

Reciprocating pump pressure regulator structure

Info

Publication number
JPH0746777Y2
JPH0746777Y2 JP1990074320U JP7432090U JPH0746777Y2 JP H0746777 Y2 JPH0746777 Y2 JP H0746777Y2 JP 1990074320 U JP1990074320 U JP 1990074320U JP 7432090 U JP7432090 U JP 7432090U JP H0746777 Y2 JPH0746777 Y2 JP H0746777Y2
Authority
JP
Japan
Prior art keywords
valve
chamber
discharge
discharge manifold
valve seat
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 - Fee Related
Application number
JP1990074320U
Other languages
Japanese (ja)
Other versions
JPH0432277U (en
Inventor
重男 市橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maruyama Manufacturing Co Inc
Original Assignee
Maruyama Manufacturing Co Inc
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 Maruyama Manufacturing Co Inc filed Critical Maruyama Manufacturing Co Inc
Priority to JP1990074320U priority Critical patent/JPH0746777Y2/en
Publication of JPH0432277U publication Critical patent/JPH0432277U/ja
Application granted granted Critical
Publication of JPH0746777Y2 publication Critical patent/JPH0746777Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Safety Valves (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、往復ポンプの調圧部構造に係り、詳しくは
部品点数を低減された往復ポンプの調圧部構造に関する
ものである。
[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pressure regulating portion structure of a reciprocating pump, and more particularly to a pressure regulating portion structure of a reciprocating pump having a reduced number of parts.

〔従来の技術〕[Conventional technology]

第3図は三連式ピストンポンプ10の従来の調圧部構造を
示している。後述のこの考案の実施例と同一の部分につ
いては同符合により指示して、説明は省略し、主要点に
ついてのみ説明する。従来の調圧弁76は、吐出マニホー
ルド18の上部側の取付面78に取付けられる。ボデー80
は、下面側において取付面78に当てられるとともに、上
面側においてばね筒82の下面を当てられ、締付けボルト
84によりばね筒82と共に吐出マニホールド18に締付けら
れる。弁座54は周縁部を取付面78とボデー80とにより挟
着され、ボール56は弁座54に就座自在であり、圧縮コイ
ルばね70は、ばね筒82内に配設されて、下側のばね座68
及び弁押え58を介してボール56を弁座54へ付勢する。
FIG. 3 shows the structure of a conventional pressure adjusting portion of the triple piston pump 10. The same parts as those of the embodiment of the present invention described later are designated by the same reference numerals, the description thereof will be omitted, and only the main points will be described. The conventional pressure regulating valve 76 is attached to the upper mounting surface 78 of the discharge manifold 18. Body 80
Is attached to the mounting surface 78 on the lower surface side and the lower surface of the spring cylinder 82 is attached to the upper surface side, and the tightening bolt
It is fastened to the discharge manifold 18 together with the spring cylinder 82 by 84. The valve seat 54 has its peripheral edge sandwiched between the mounting surface 78 and the body 80, the ball 56 is freely seated on the valve seat 54, and the compression coil spring 70 is disposed inside the spring cylinder 82 and Spring seat 68
And the ball 56 is urged to the valve seat 54 via the valve retainer 58.

吐出室40内の液圧が調圧値を超えると、ボール56は圧縮
コイルばね70に抗して弁座54から離れ、吐出室40の液体
が調圧弁76の弁座54及び余液口(図示せず)を経て液体
タンクへ戻され、これにより、吐出室40内の液圧は調圧
値まで低下する。
When the liquid pressure in the discharge chamber 40 exceeds the pressure adjustment value, the ball 56 separates from the valve seat 54 against the compression coil spring 70, and the liquid in the discharge chamber 40 is discharged from the valve seat 54 of the pressure adjustment valve 76 and the residual liquid port ( (Not shown) and returned to the liquid tank, whereby the liquid pressure in the discharge chamber 40 decreases to the pressure regulation value.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

従来の調圧弁76の問題点を列挙すると、次の通りであ
る。
The problems of the conventional pressure regulating valve 76 are listed below.

(a)調圧弁76は吐出マニホールド18等、三連式ピスト
ンポンプ10の本体とは全く別個に製作されるので、ボデ
ー80及びばね筒82等の部品が多くなる。
(A) Since the pressure regulating valve 76 is manufactured completely separately from the main body of the triple piston pump 10, such as the discharge manifold 18, the number of parts such as the body 80 and the spring cylinder 82 increases.

(b)調圧弁76を吐出マニホールド18に結合するため
に、長大な締付けボルト84が必要となる。
(B) In order to connect the pressure regulating valve 76 to the discharge manifold 18, a long tightening bolt 84 is required.

(c)調圧弁76が吐出マニホールド18から大きく突出
し、かつ調圧弁76の重量が大きいので、調圧弁76の振動
に因る締付けボルト84の緩みや破損が生じ易い。
(C) Since the pressure regulating valve 76 largely projects from the discharge manifold 18 and the weight of the pressure regulating valve 76 is large, the tightening bolt 84 is likely to be loosened or damaged due to the vibration of the pressure regulating valve 76.

(d)調圧弁76を含む三連式ピストンポンプ10全体が大
型となる。
(D) The entire triple piston pump 10 including the pressure regulating valve 76 becomes large.

この考案の目的は、上述の問題点を克服する往復ポンプ
の調圧部構造を提供することである。
An object of the present invention is to provide a pressure regulator structure of a reciprocating pump that overcomes the above problems.

〔課題を解決するための手段〕[Means for Solving the Problems]

この考案を、実施例に対応する図面の符合を使用して説
明する。
The invention will be described with reference to the drawings corresponding to the embodiments.

この考案の前提となる往復ポンプ(10)は、吐出マニホ
ールド(18)がポンプ室(37)の先端側に接続され、ポ
ンプ室(37)内の流体が吐出マニホールド(18)内の吐
出室(40)を経て吐出口(46)から吐出マニホールド
(18)の外部へ導出される。また、、調圧弁(52)は、
吐出室(40)と余液口(48)との連通部に配設される弁
座(54)と、余液口(48)側から弁座(54)に就座自在
になっている弁体(56)と、この弁体(56)を弁座(5
4)の方へ付勢する付勢手段(70)と、この付勢手段(7
0)の付勢力を調整する操作部材(66)とを有してい
る。
In the reciprocating pump (10) which is the premise of the present invention, the discharge manifold (18) is connected to the tip side of the pump chamber (37), and the fluid in the pump chamber (37) is discharged into the discharge chamber (18). 40) and is led out of the discharge manifold (18) from the discharge port (46). Also, the pressure regulating valve (52) is
A valve seat (54) arranged in the communication portion between the discharge chamber (40) and the residual liquid port (48), and a valve which can be seated on the valve seat (54) from the residual liquid port (48) side. The body (56) and this valve body (56)
A biasing means (70) for biasing toward (4) and this biasing means (7
Operation member (66) for adjusting the urging force of (0).

そして、この考案の調圧部構造では、このような往復ポ
ンプ(10)において、余液口(48)が、吐出マニホール
ド(18)に設けられるとともに、この余液口(48)が吐
出マニホールド(18)内の組込室(50)内に配設されて
いる調圧弁部の弁体(56)及び弁座(54)を介して前記
吐出室(40)へ連通しており、かつ前記組込室(50)の
開口を閉鎖するように吐出マニホールド(18)に当てら
れる蓋(60)を介して前記弁体(56)に係合する弁押え
(58)の棒部(58a)と、この棒部(58a)の外部空間を
介して対峙するように前記吐出マニホールド(18)の一
部を構成する張り出し部(64)とこの張り出し部(64)
に支持され進退可能とされる操作部材(66)と、外部空
間に突出する前記棒部(58a)と張り出し部(64)との
間に伸縮可能に縮設される付勢手段(70)を具えてい
る。
In the pressure regulator structure of the present invention, in the reciprocating pump (10), the residual liquid port (48) is provided in the discharge manifold (18), and the residual liquid port (48) is provided in the discharge manifold (48). 18) communicates with the discharge chamber (40) through the valve body (56) and the valve seat (54) of the pressure regulating valve portion arranged in the built-in chamber (50), and A rod portion (58a) of a valve retainer (58) that engages with the valve body (56) via a lid (60) that is applied to the discharge manifold (18) so as to close the opening of the inlet chamber (50); A projecting part (64) forming a part of the discharge manifold (18) and a projecting part (64) facing each other through the external space of the rod part (58a).
And an urging means (70) that is expandably and contractably provided between the operating member (66) supported by the base member and capable of moving forward and backward, and the bar portion (58a) protruding to the external space and the protruding portion (64). It has.

〔作用〕[Action]

調圧弁(52)の調圧値は、操作部材(66)により付勢手
段(70)の付勢力を変更することにより調整される。
The pressure regulating value of the pressure regulating valve (52) is adjusted by changing the urging force of the urging means (70) by the operating member (66).

流体は吐出行程においてポンプ室(37)より吐出室(4
0)へ吐出されて来る。吐出室(40)の流体圧が、調圧
弁(52)の調圧値以下であるときは、弁体(56)は付勢
手段(70)の付勢力により弁座(54)に押圧され、吐出
室(40)と組込室(50)との連通は断たれている。これ
に対し、吐出室(40)の流体圧が、調圧弁(52)の調圧
値を超えると、弁体(56)は、吐出室(40)側の流体圧
からの力により付勢手段(70)の付勢力に抗して弁座
(54)から離れ、組込室(50)は吐出室(40)へ連通す
る。こうして、吐出室(40)内の流体は組込室(50)を
経て吐出マニホールド(18)の余液口(48)から放出さ
れ、吐出マニホールド(18)の吐出口(46)における流
体圧は調圧値まで低下する。なお付勢手段(70)は外部
空間に配設されるので流体に触れることはない。
The fluid flows from the pump chamber (37) to the discharge chamber (4
It is discharged to 0). When the fluid pressure in the discharge chamber (40) is less than or equal to the pressure regulating value of the pressure regulating valve (52), the valve body (56) is pressed against the valve seat (54) by the urging force of the urging means (70), The communication between the discharge chamber (40) and the built-in chamber (50) is cut off. On the other hand, when the fluid pressure in the discharge chamber (40) exceeds the pressure regulation value of the pressure regulating valve (52), the valve body (56) is urged by the force from the fluid pressure on the discharge chamber (40) side. The built-in chamber (50) communicates with the discharge chamber (40) away from the valve seat (54) against the biasing force of the (70). Thus, the fluid in the discharge chamber (40) is discharged from the residual liquid port (48) of the discharge manifold (18) through the built-in chamber (50), and the fluid pressure at the discharge port (46) of the discharge manifold (18) becomes It falls to the pressure regulation value. Since the biasing means (70) is arranged in the external space, it does not come into contact with the fluid.

〔実施例〕〔Example〕

以下、この考案を第1図及び第2図の実施例について説
明する。
The invention will be described below with reference to the embodiments shown in FIGS. 1 and 2.

第1図は三連式ピストンポンプ10を第2図のI方向から
示す一部断面図、第2図は三連式ピストンポンプ10を側
方から示す断面図である。クランクケース12、吸入マニ
ホールド14、シリンダパイプ16及び吐出マニホールド18
は、水平方向へ順番に配列され、2本の締付けボルト20
により相互に締め付けられて、接合されている。ピスト
ンロッド22は、吸入マニホールド14を貫通して、先端側
においてシリンダパイプ16内へ達し、クランクケース12
内のクランク軸(図示せず)の回転に伴って往復動す
る。ピストンロッド22の先端部には、基端側から弁体2
4、カラー26及びストッパ28が嵌装され、ナット30は、
ストッパ28のさらに先端側においてピストンロッド22に
螺合し、ストッパ28、カラー26及び弁体24をピストンロ
ッド22の段部へ締め付けている。弁座32は、弁体24とス
トッパ28との間において軸方向へ変位自在にカラー26に
遊嵌し、ピストンパッキン34は、弁座32の外周側に嵌着
されて、外周側においてシリンダパイプ16に摺接する。
弁体24及び弁座32は吸入弁36を構成し、吸入弁36は、弁
座32が弁体24に当接しているときは、閉であり、弁座32
が弁体24から離れてストッパ28に当接しているときは、
開となる。ポンプ室37はシリンダパイプ16内において吸
入弁36より先端側に形成され、吐出弁38はポンプ室37と
吐出マニホールド18との境界部に配設される。吐出室40
は吐出マニホールド18内に形成され、アキュムレータ42
は吐出マニホールド18の上部に結合される。アキュムレ
ータ42内は吐出室40へ連通し、空気室44は、アキュムレ
ータ42内の上部に存在して、吐出室40における吐出圧の
脈動を吸収する。
FIG. 1 is a partial sectional view showing the triple piston pump 10 from the direction I in FIG. 2, and FIG. 2 is a sectional view showing the triple piston pump 10 from the side. Crankcase 12, intake manifold 14, cylinder pipe 16 and discharge manifold 18
Are arranged in order horizontally and the two tightening bolts 20
Are fastened to each other and joined together. The piston rod 22 penetrates the intake manifold 14, reaches the inside of the cylinder pipe 16 on the tip side, and
It reciprocates with the rotation of the inner crank shaft (not shown). At the tip of the piston rod 22, insert the valve element 2 from the base end side.
4, the collar 26 and the stopper 28 are fitted, and the nut 30 is
The stopper 28 is further screwed onto the piston rod 22 on the front end side, and the stopper 28, the collar 26 and the valve body 24 are fastened to the stepped portion of the piston rod 22. The valve seat 32 is loosely fitted to the collar 26 between the valve body 24 and the stopper 28 so as to be displaceable in the axial direction, and the piston packing 34 is fitted to the outer peripheral side of the valve seat 32, and the cylinder pipe on the outer peripheral side. Sliding on 16.
The valve body 24 and the valve seat 32 constitute an intake valve 36, and the intake valve 36 is closed when the valve seat 32 is in contact with the valve body 24, and the valve seat 32 is closed.
Is separated from the valve body 24 and is in contact with the stopper 28,
Open. The pump chamber 37 is formed in the cylinder pipe 16 on the tip side of the suction valve 36, and the discharge valve 38 is arranged at the boundary between the pump chamber 37 and the discharge manifold 18. Discharge chamber 40
Is formed in the discharge manifold 18, and the accumulator 42
Is coupled to the top of the discharge manifold 18. The inside of the accumulator 42 communicates with the discharge chamber 40, and the air chamber 44 exists above the inside of the accumulator 42 and absorbs the pulsation of the discharge pressure in the discharge chamber 40.

吐出口46は、吐出マニホールド18の一方の側部に設けら
れて、吐出室40へ連通する。余液口48は、吐出マニホー
ルド18の先端部に設けられ、吐出マニホールド18内の組
込室50の側部へ連通する。組込室50は、吐出口46に対峙
するように、軸方向をシリンダパイプ16の軸方向に対し
て直角な水平方向とされ、吐出口46側の端において吐出
室40へ連通する。
The discharge port 46 is provided on one side of the discharge manifold 18 and communicates with the discharge chamber 40. The residual liquid port 48 is provided at the tip of the discharge manifold 18 and communicates with the side of the built-in chamber 50 in the discharge manifold 18. The built-in chamber 50 has a horizontal axial direction perpendicular to the axial direction of the cylinder pipe 16 so as to face the discharge port 46, and communicates with the discharge chamber 40 at the end on the discharge port 46 side.

調圧弁52は、弁座54、この弁座54に就座自在なボール5
6、及びボール56を弁座54と反対側から押える弁押え58
を部品として備え、これら弁座54、ボール56及び弁押え
58は、組込室50内へ組込まれる。蓋60は、組込室50の開
口を閉鎖するように、吐出マニホールド18に当てられ、
ねじ61により固定され、かつ弁押え58の棒部58aを案内
する。ベローズ62は、組込室50内に位置して、弁押え58
の棒部58aを包囲し、組込室50内の液体が蓋60から外部
へ漏出するのを阻止する。張出し部64は、蓋60から離れ
て、かつ蓋60に対峙するように、張り出しており、吐出
マニホールド18の一部を構成する。調節ねじ66は張出し
部64に螺合し、2個のばね座68は、それぞれ蓋60から突
出する弁押え58の棒部58aの先端及び調節ねじ66のねじ
部の先端に係止されている。圧縮コイルばね70は、両ば
ね座68の間に縮設され、一方のばね座68及び弁押え58を
介してボール56を弁座54へ押圧する。
The pressure regulating valve 52 includes a valve seat 54 and a ball 5 which can be freely seated on the valve seat 54.
Valve retainer 58 that retains 6 and ball 56 from the side opposite valve seat 54
As a part, these valve seat 54, ball 56 and valve retainer
58 is installed in the installation room 50. The lid 60 is applied to the discharge manifold 18 so as to close the opening of the built-in chamber 50,
It is fixed by a screw 61 and guides the rod portion 58a of the valve retainer 58. The bellows 62 is located in the built-in chamber 50 and has a valve retainer 58.
The rod portion (58a) is surrounded to prevent the liquid in the built-in chamber (50) from leaking from the lid (60) to the outside. The projecting portion 64 projects from the lid 60 so as to be away from the lid 60 and face the lid 60, and constitutes a part of the discharge manifold 18. The adjusting screw 66 is screwed into the overhanging portion 64, and the two spring seats 68 are respectively locked to the tip of the rod portion 58a of the valve retainer 58 protruding from the lid 60 and the tip of the screw portion of the adjusting screw 66. . The compression coil spring 70 is contracted between the two spring seats 68 and presses the ball 56 against the valve seat 54 via the one spring seat 68 and the valve retainer 58.

実施例の作用について説明する。The operation of the embodiment will be described.

調圧弁52の調圧値を変更する場合には、調節ねじ66を回
転操作する。これにより、張出し部64からの調節ねじ66
のねじ部の突出量が変化し、両ばね座68の間の距離が変
化して、圧縮コイルばね70の予荷重が変化する。
When changing the pressure adjusting value of the pressure adjusting valve 52, the adjusting screw 66 is rotated. This allows the adjustment screw 66 from the overhang 64 to be
The projecting amount of the screw portion of the above changes, the distance between both spring seats 68 changes, and the preload of the compression coil spring 70 changes.

液体は吐出行程においてポンプ室37より吐出弁38を経て
吐出室40へ吐出されて来る。吐出室40の液圧が、調圧弁
52の調圧値以下であるときは、ボール56は圧縮コイルば
ね70の付勢力により弁座54に押圧され、吐出室40と組込
室50との連通は断たれている。これに対し、吐出室40の
液圧が、調圧弁52の調圧値を超えると、ボール56は、吐
出室40側の液圧からの力により圧縮コイルばね70の付勢
力に抗して弁座54から離れ、組込室50は吐出室40へ連通
する。こうして、吐出室40内の液体は組込室50を経て吐
出マニホールド18の余液口48から放出され、吐出マニホ
ールド18の吐出口46における液圧は調圧値まで低下す
る。圧縮コイルばね70は蓋60を張り出し部64との間に配
設され、外部に露出されており、ばねの状況が視認で
き、かつ交換が容易とされるとともに、還液による接触
から開放される。
The liquid is discharged from the pump chamber 37 through the discharge valve 38 to the discharge chamber 40 in the discharge stroke. The hydraulic pressure in the discharge chamber 40 is
When the pressure is equal to or less than 52, the ball 56 is pressed against the valve seat 54 by the urging force of the compression coil spring 70, and the communication between the discharge chamber 40 and the built-in chamber 50 is cut off. On the other hand, when the fluid pressure in the discharge chamber 40 exceeds the pressure regulation value of the pressure regulating valve 52, the ball 56 is acted upon by the force from the fluid pressure on the discharge chamber 40 side against the biasing force of the compression coil spring 70. The built-in chamber 50 communicates with the discharge chamber 40 away from the seat 54. In this way, the liquid in the discharge chamber 40 is discharged from the residual liquid port 48 of the discharge manifold 18 via the built-in chamber 50, and the hydraulic pressure at the discharge port 46 of the discharge manifold 18 drops to the pressure regulation value. The compression coil spring 70 is disposed between the lid 60 and the projecting portion 64, and is exposed to the outside. The state of the spring can be visually recognized, the exchange is facilitated, and the contact by the return liquid is released. .

〔考案の効果〕[Effect of device]

この考案の効果を列挙すると、次の通りである。 The effects of this device are listed below.

(a)吐出マニホールドに組込室及び余液口が設けら
れ、調圧弁部の弁体及び弁座が組込室に組込まれるの
で、調圧弁の部品の一部が吐出マニホールドに代替さ
れ、部品点数を低減することができる。
(A) Since the discharge manifold is provided with the built-in chamber and the residual liquid port, and the valve body and the valve seat of the pressure regulating valve section are built in the built-in chamber, part of the pressure regulating valve component is replaced by the discharge manifold, and the component is replaced. The score can be reduced.

(b)往復ポンプを吐出マニホールドに結合するための
長大な締付けボルトを省略することができる。
(B) A long tightening bolt for connecting the reciprocating pump to the discharge manifold can be omitted.

(c)吐出マニホールドからの調圧弁の突出量及び突出
部分の重量が減少し、調圧弁の振動による締付けボルト
の緩み破損という事態を除去できる。
(C) The amount of protrusion of the pressure regulating valve from the discharge manifold and the weight of the protruding portion are reduced, and the situation in which the tightening bolt is loosened and damaged due to vibration of the pressure regulating valve can be eliminated.

(b)調圧弁の一部が、吐出マニホールドに共通化さ
れ、また、吐出マニホールド内に組込まれるので、調圧
弁を含む往復ポンプ全体を小型化することができ、収納
容積が少なくてすむ。
(B) Since a part of the pressure regulating valve is shared by the discharge manifold and is incorporated in the discharge manifold, the entire reciprocating pump including the pressure regulating valve can be downsized and the storage volume can be reduced.

(e)付勢手段としての圧縮コイルばねが吐出マニホー
ルドの外側(外部空間)に配設されているので、散布液
に直接触れないことにより、腐食に対する耐久性が増大
すると共に、性能の選定による付勢手段の交換が容易で
あり、また付勢手段の撓みが直接見えるので、ばね力に
余裕があるか、又は更に高い調圧力を要するかどうかを
目視で確認できる。
(E) Since the compression coil spring as the urging means is arranged outside the discharge manifold (external space), the durability against corrosion is increased and the performance is selected by not directly touching the spray liquid. Since the urging means can be easily replaced and the bending of the urging means can be directly seen, it is possible to visually confirm whether the spring force has a margin or whether higher pressure adjustment is required.

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

第1図及び第2図はこの考案の実施例に関し、第1図は
三連式ピストンポンプを第2図のI方向から示す一部断
面図、第2図は三連式ピストンポンプを側方から示す断
面図、第3図は三連式ピストンポンプの従来の調圧部構
造を示す図である。 10……三連式ピストンポンプ(往復ポンプ)、18……吐
出マニホールド、37……ポンプ室、40……吐出室、46…
…吐出口、48……余液口、50……組込室、52……調圧
弁、54……弁座、56……ボール(弁体)、58……弁押
え、58a……棒部、64……張り出し部、66……調節ねじ
(操作部材)、70……圧縮コイルばね(付勢手段)。
FIGS. 1 and 2 relate to an embodiment of the present invention. FIG. 1 is a partial sectional view showing a triple piston pump from the direction I in FIG. 2, and FIG. FIG. 3 is a sectional view showing the structure of a conventional pressure regulating section of a triple piston pump. 10 …… Triple piston pump (reciprocating pump), 18 …… Discharge manifold, 37 …… Pump chamber, 40 …… Discharge chamber, 46…
… Discharge port, 48 …… Spill port, 50 …… Built-in chamber, 52 …… Pressure regulating valve, 54 …… Valve seat, 56 …… Ball (valve body), 58 …… Valve retainer, 58a …… Bar part , 64 ...... Overhang part, 66 ...... Adjusting screw (operating member), 70 ...... Compression coil spring (biasing means).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】吐出マニホールド(18)がポンプ室(37)
の先端側に接続され、前記ポンプ室(37)内の流体が前
記吐出マニホールド(18)内の吐出室(40)を経て吐出
口(46)から前記吐出マニホールド(18)の外部へ導出
され、調圧弁(52)が、前記吐出室(40)と余液口(4
8)との連通部に配設される弁座(54)と、前記余液口
(48)側から前記弁座(54)に就座自在になっている弁
体(56)と、この弁体(56)を前記弁座(54)の方へ付
勢する付勢手段(70)と、この付勢手段(70)の付勢力
を調整する操作部材(66)とを有している往復ポンプ
(10)において、前記余液口(48)が、前記吐出マニホ
ールド(18)に設けられるとともに、この余液口(48)
が前記吐出マニホールド(18)内の組込室(50)内に配
設されている調圧弁部の弁体(56)及び弁座(54)を介
して前記吐出室(40)へ連通しており、かつ前記組込室
(50)の開口を閉鎖するように吐出マニホールド(18)
に当てられる蓋(60)を介して前記弁体(56)に係合す
る弁押え(58)の棒部(58a)と、この棒部(58a)に外
部空間を介して対峙するように前記吐出マニホールド
(18)の一部を構成する張り出し部(64)とこの張り出
し部(64)に支持され進退可能とされる操作部材(66)
と、外部空間に突出する前記棒部(58a)と張り出し部
(64)との間に伸縮可能に縮設される付勢手段(70)を
具えていることを特徴とする往復ポンプの調圧部構造。
1. The discharge manifold (18) is a pump chamber (37).
Is connected to the tip side of the pump chamber (37), the fluid in the pump chamber (37) is discharged from the discharge port (46) to the outside of the discharge manifold (18) through the discharge chamber (40) in the discharge manifold (18), The pressure regulating valve (52) is connected to the discharge chamber (40) and the residual liquid port (4).
8) a valve seat (54) provided in a communicating portion with the valve seat (54), a valve body (56) which can be seated on the valve seat (54) from the residual liquid port (48) side, and this valve Reciprocation having an urging means (70) for urging the body (56) toward the valve seat (54) and an operating member (66) for adjusting the urging force of the urging means (70). In the pump (10), the residual liquid port (48) is provided in the discharge manifold (18), and the residual liquid port (48) is also provided.
Is communicated with the discharge chamber (40) through the valve body (56) and valve seat (54) of the pressure regulating valve portion which is arranged in the built-in chamber (50) in the discharge manifold (18). And the discharge manifold (18) so as to close the opening of the built-in chamber (50).
The rod portion (58a) of the valve retainer (58) that engages with the valve body (56) through the lid (60) that is applied to the rod portion (58a) and the rod portion (58a) that faces the rod portion (58a) through the external space. A projecting portion (64) forming a part of the discharge manifold (18) and an operating member (66) supported by the projecting portion (64) and capable of advancing and retracting.
And a urging means (70) which is contracted so as to be able to expand and contract between the rod portion (58a) protruding into the external space and the projecting portion (64). Part structure.
JP1990074320U 1990-07-16 1990-07-16 Reciprocating pump pressure regulator structure Expired - Fee Related JPH0746777Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990074320U JPH0746777Y2 (en) 1990-07-16 1990-07-16 Reciprocating pump pressure regulator structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990074320U JPH0746777Y2 (en) 1990-07-16 1990-07-16 Reciprocating pump pressure regulator structure

Publications (2)

Publication Number Publication Date
JPH0432277U JPH0432277U (en) 1992-03-16
JPH0746777Y2 true JPH0746777Y2 (en) 1995-10-25

Family

ID=31613911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990074320U Expired - Fee Related JPH0746777Y2 (en) 1990-07-16 1990-07-16 Reciprocating pump pressure regulator structure

Country Status (1)

Country Link
JP (1) JPH0746777Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511351Y2 (en) * 1988-05-17 1993-03-19

Also Published As

Publication number Publication date
JPH0432277U (en) 1992-03-16

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