JPH03164575A - High pressure pump for injecting suspension - Google Patents
High pressure pump for injecting suspensionInfo
- Publication number
- JPH03164575A JPH03164575A JP30269889A JP30269889A JPH03164575A JP H03164575 A JPH03164575 A JP H03164575A JP 30269889 A JP30269889 A JP 30269889A JP 30269889 A JP30269889 A JP 30269889A JP H03164575 A JPH03164575 A JP H03164575A
- Authority
- JP
- Japan
- Prior art keywords
- suspension
- piston
- valve
- pump
- valve 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.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 31
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明はモルタル、セメントミルク等の懸濁液を地中に
注入にして地盤の改良を行う際に用いる懸濁液注入用高
圧ポンプに関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a high-pressure pump for injecting suspensions used when improving the ground by injecting suspensions of mortar, cement milk, etc. into the ground.
「従来の技術」
従来、此種の懸濁液注入用高圧ポンプは、シリング−の
先端に懸濁液の供給管と送出管を接続すると共に、この
供給管、送出管には夫々一方向バルブを設けてあり、こ
の一方向バルブによって懸濁液の吸入行程時における送
出管内での逆流、及び吐出行程時における供給管内への
逆流を防いでいる。``Prior Art'' Conventionally, this type of high-pressure pump for injecting suspensions has a suspension supply pipe and a delivery pipe connected to the tip of the syringe, and one-way valves are attached to the supply pipe and the delivery pipe, respectively. This one-way valve prevents the suspension from flowing back into the delivery pipe during the suction stroke and from flowing back into the supply pipe during the discharge stroke.
「発明が解決しようとする課題」
上記従来の懸濁液注入用高圧ポンプによれば、吸入行程
及び吐出行程を終了した時点で、正流側の弁体は弁座か
ら離れており、この状態で吐出行程又は吸入行程が連続
して行われるので、ピストンからの高圧（逆流圧）が作
用して弁体が弁座に衝突するように着座し、従って弁体
、弁座の消耗が激しいという欠点を有していた。"Problems to be Solved by the Invention" According to the above-mentioned conventional high-pressure pump for suspension injection, the valve element on the normal flow side is separated from the valve seat at the end of the suction stroke and the discharge stroke, and this state Since the discharge stroke or suction stroke is performed continuously, high pressure (backflow pressure) from the piston acts and the valve body is seated against the valve seat, resulting in severe wear and tear on the valve body and valve seat. It had drawbacks.
本発明は上述した従来事情に鑑みてなされたものであり
、その目的とする処は、正流側の弁体が着座した後にこ
の弁体に逆流圧が作用するようにして、弁体と弁座の衝
突を阻止することにある。The present invention has been made in view of the above-mentioned conventional circumstances, and its purpose is to connect the valve body with the valve body by applying backflow pressure to the valve body after the valve body on the normal flow side is seated. The goal is to prevent collisions between seats.
「課題を解決するための手段」
上記目的を達成するために、本発明の懸濁液注入用高圧
ポンプは、懸濁液の吸入行程と吐出行程の終了時に一方
向バルブの弁体の着座時間を設けたことを特徴とする。"Means for Solving the Problems" In order to achieve the above object, the high-pressure pump for suspension injection of the present invention has a seating time of the valve body of the one-way valve at the end of the suction stroke and discharge stroke of the suspension. It is characterized by having the following.
「作用」
本発明によれば、ピストンの往動による吐出行程終了後
、送出管に設けた一方向バルブの弁体が着座した後ピス
トンの復帰による吸入行程を開始し、この吸入行程終了
後、供給管に設けた一方向バルブの弁体が着座した後吐
出行程を開始する。"Operation" According to the present invention, after the discharge stroke due to the forward movement of the piston is completed, the valve body of the one-way valve provided in the delivery pipe is seated, and then the suction stroke is started due to the return of the piston, and after the completion of this suction stroke, After the valve body of the one-way valve provided in the supply pipe is seated, the discharge stroke begins.
「実施例」 以下、本発明の一実施例を図面に基いて説明する。"Example" Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図において懸濁液注入用高圧ポンプ（Ａ）は、シリ
ンダー（１）及びこのシリンダー（１）内を前後に往復
動するピストン（２）を備え、前記シリンダー（１）の
先端部分には液槽（３）に連絡する供給管（４）と、先
端を開放した送出管（５）とを接続し、前記ピストン（
２）の往復動によって液槽（３）内の懸濁液をシリンダ
ー（１）内に吸入すると共に、この懸濁液を送出管（５
）から吐出するようになっている。In FIG. 1, a high-pressure pump (A) for injecting a suspension includes a cylinder (1) and a piston (2) that reciprocates back and forth within the cylinder (1). A supply pipe (4) communicating with the liquid tank (3) and a delivery pipe (5) with an open end are connected, and the piston (
2) sucks the suspension in the liquid tank (3) into the cylinder (1), and also transfers this suspension to the delivery pipe (5).
).
シリンダー（１）の後端部分には高圧水の供給ポンプ（
６）に連絡する給排管（７）を接続し、前記供給ポンプ
（６）の作動により２００ ｋｇｆ／ｃｒｌ程度の高圧
水がピストン（２）後部に送られ、これによりピストン
（２）が往動してシリンダー（１）内に吸込まれた懸濁
液を送出管（５）の先端から高圧で吐出する。ピストン
（２）のロッド（８）は油圧シリンダー（９）の出入杆
（１０）に連絡し、この油圧シリンダー（９）の作動に
よってピストン（２）を復帰させ、これにより供給管（
４）を介して懸濁液の吸入を行う。A high-pressure water supply pump (
A supply/discharge pipe (7) connected to the piston (6) is connected, and high pressure water of about 200 kgf/crl is sent to the rear of the piston (2) by the operation of the supply pump (6), which causes the piston (2) to move forward. The suspension sucked into the cylinder (1) is discharged at high pressure from the tip of the delivery pipe (5). The rod (8) of the piston (2) communicates with the inlet/outlet rod (10) of the hydraulic cylinder (9), and the actuation of this hydraulic cylinder (9) causes the piston (2) to return, thereby opening the supply pipe (
4) Perform inhalation of the suspension via.
供給管（４）及び送出管（５）には一方向バルブ（１１
）、 （１２）を夫々二段に設ける。一方向バルブ（
１１）、 （１２）は流体が逆流方向に流れる場合に
限って弁体（１３）が弁座（１４）から離れて流路を開
栓し、逆流した場合には弁体（１３）が着座して流路を
閉栓する周知の構造のもので、吐出行程時における供給
管（４）内への懸濁液の逆流、吸入行程時における送出
管（５）内での懸濁液の逆流を防ぐ。A one-way valve (11) is installed in the supply pipe (4) and the delivery pipe (5).
) and (12) are provided in two stages. One-way valve (
11) and (12), the valve body (13) separates from the valve seat (14) to open the flow path only when the fluid flows in the reverse direction, and when the fluid flows in the reverse direction, the valve body (13) seats. This is a well-known structure that closes the flow path by blocking the flow path, and prevents the backflow of the suspension into the supply pipe (4) during the discharge stroke and the backflow of the suspension into the delivery pipe (5) during the suction stroke. prevent.
上記ピストン（２）のロッド（８）と油圧シリンダー（
９）の出入杆（１０）との間には検出板（Ｉ５）を設け
ると共に、ピストン（２）の往動及び復帰動作の終了時
にこの検出板（１５）を検知するセンサー（１６）、
（ＩＴ）を設け、このセンサー（１６）、 （１７
）を不図示のコントロール部を介して高圧水の供給ポン
プ（６）、油圧シリンダー（９）を作動させる油圧ポン
プ（１８）の作動・停止を行う。The rod (8) of the piston (2) and the hydraulic cylinder (
A detection plate (I5) is provided between the entry and exit rod (10) of 9), and a sensor (16) detects this detection plate (15) at the end of forward movement and return movement of the piston (2);
(IT) and these sensors (16), (17
) is used to operate and stop the high-pressure water supply pump (6) and the hydraulic pump (18) that operates the hydraulic cylinder (9) via a control unit (not shown).
コントロール部は、センサー（１６）が検出板（１５）
を検知すると供給ポンプ（６）の作動を停止させ、一方
向バルブ（１２）における弁体（１３）の着座時間（ｔ
ｌ）経過後に油圧ポンプ（１８）を作動させる。同時に
、センサー（１７）が検出板（１５）を検知すると油圧
ポンプ（１８）の作動を停止させ、一方向バルブ（ＩＩ
）における弁体（１３）の着座時間（ｔ２）経過後に供
給ポンプ（６）を作動させる。In the control section, the sensor (16) is connected to the detection plate (15).
When detected, the operation of the supply pump (6) is stopped, and the seating time (t) of the valve body (13) in the one-way valve (12) is
l) Activate the hydraulic pump (18) after the elapsed time. At the same time, when the sensor (17) detects the detection plate (15), the operation of the hydraulic pump (18) is stopped and the one-way valve (II
), the supply pump (6) is activated after the seating time (t2) of the valve body (13) has elapsed.
以下に、本実施例における懸濁液注入用高圧ポンプ（Ａ
）の作動について説明すると、まず油圧ポンプ（１８）
の作動により油圧シリンダー（９）を作動させてピスト
ン（２）を復帰させ、供給管（４）を介して液槽（３）
内の懸濁液をシリンダー（１）内に吸込む。次に、この
吸入行程が終了すると油圧ポンプ（１８）が停止し、供
給管（４）における一方向バルブ（１１）の弁体（１３
）が着座した後、供給ポンプ（６）が作動してピストン
（２）が往動し、シリンダー（２）内の懸濁液を送出管
（５）を介して地中に吐出（注入）する。Below, the high-pressure pump for suspension injection (A
) to explain the operation of the hydraulic pump (18).
The hydraulic cylinder (9) is operated to return the piston (2), and the liquid tank (3) is supplied via the supply pipe (4).
The suspension inside is sucked into the cylinder (1). Next, when this suction stroke is completed, the hydraulic pump (18) is stopped, and the valve body (13) of the one-way valve (11) in the supply pipe (4) is stopped.
) is seated, the supply pump (6) is activated, the piston (2) moves forward, and the suspension in the cylinder (2) is discharged (injected) into the ground through the delivery pipe (5). .
さらに、この吐出行程が終了すると供給ポンプ（６）が
停止し、送出管（５）における一方向バルブ（１２）の
弁体（１３）が着座した後油圧ポンプ（１８）が作動し
てピストン（２）が復帰する（第２図参照）。Further, when this discharge stroke is completed, the supply pump (6) stops, and after the valve body (13) of the one-way valve (12) in the delivery pipe (5) is seated, the hydraulic pump (18) is activated and the piston ( 2) returns (see Figure 2).
本実施例においては一方向バルブ（ＩＩ）、 （１２
）を夫々二段に設けたことにより、弁体（Ｉ３）及び弁
座（１４）にかかる逆流圧をより低減でき、方向バルブ
（１１）、 （１２）の消耗度をさらに小さくする。In this embodiment, one-way valve (II), (12
) are provided in two stages, so that the backflow pressure applied to the valve body (I3) and the valve seat (14) can be further reduced, and the degree of wear and tear on the directional valves (11) and (12) can be further reduced.
第３図においては、上記シリンダー（１）、ピストン（
２）、油圧シリンダー（９）を夫々２本づつ設け、切換
弁（＋９） （２０）、 （２１） （２２）を
介して供給ポンプ（６）による高圧水をピストン（２）
（２）後部に交互に送ると共に油圧シリンダー（９）（
９）を交互に作動させて、ピストン（２）（２）を交互
に往復動させ、これにより懸濁液の吐出（注入）を連続
して行う。尚、この場合も第４図に示す如く、夫々のピ
ストン（２）（２）の吸入行程、及び吐出行程終了後に
一方向バルブ（１１） （＋２）における弁体（１３
）の着座時間（ｔ＋）（＋２）を設けることは言うまで
もない。In Figure 3, the cylinder (1), the piston (
2), two hydraulic cylinders (9) are provided, and high pressure water is supplied to the piston (2) by the supply pump (6) via the switching valves (+9) (20), (21) and (22).
(2) Hydraulic cylinder (9) (
9) are operated alternately to cause the pistons (2) (2) to reciprocate alternately, thereby continuously discharging (injecting) the suspension. In this case as well, as shown in Fig. 4, the valve body (13) in the one-way valve (11) (+2)
) It goes without saying that a sitting time (t+) (+2) is provided.
「発明の効果」
本発明は以上説明したように構成したので以下に記載さ
れる効果を有する。"Effects of the Invention" Since the present invention is configured as described above, it has the effects described below.
正流側の弁体が着座した後にこの弁体に逆流圧が作用す
るので弁体と弁座の衝突圧を緩和させることができ、よ
って弁体及び弁座の消耗度を著しく低減させ一方向バル
ブの耐久性を向上し得る。After the valve element on the normal flow side is seated, backflow pressure acts on this valve element, which can alleviate the collision pressure between the valve element and the valve seat, thereby significantly reducing the degree of wear and tear on the valve element and valve seat. The durability of the valve can be improved.
図面は本発明の一実施例を示し、第１図は懸濁液注入用
高圧ポンプの簡略図、第２図はそのタイムチャート、第
３図は他の実施例における簡略図、第４図はそのタイム
チャートを示す。
尚、図中、
（１）ニジリンダ−
（４）：供給管
（５）：送出管
（ＩＩ） （１２） ニ一方向バルブ（２）：ピス
トン
（ｔ＋）（＋２）：着座時間
特 許 出 願 人 東邦地下工機株式会社代
理
人
早
月
政
名
１
第
図The drawings show one embodiment of the present invention, FIG. 1 is a simplified diagram of a high-pressure pump for suspension injection, FIG. 2 is a time chart thereof, FIG. 3 is a simplified diagram of another embodiment, and FIG. The time chart is shown below. In the figure, (1) Niji cylinder (4): Supply pipe (5): Delivery pipe (II) (12) One-way valve (2): Piston (t+) (+2): Seating time Patent application Person Toho Chika Koki Co., Ltd. Agent Masana Hayatsuki 1 Figure
Claims (1)
と共に、該供給管と送出管には夫々一方向バルブを設け
、ピストンの往復動により供給管を介してシリンダー内
に懸濁液を吸入し、かつ該懸濁液を送出管から吐出する
懸濁液注入用高圧ポンプにおいて、上記懸濁液の吸入行
程と吐出行程の終了時に一方向バルブの弁体の着座時間
を設けたことを特徴とする懸濁液注入用高圧ポンプ。A supply pipe and a delivery pipe for the suspension are connected to the tip of the cylinder, and a one-way valve is provided on each of the supply pipe and delivery pipe, so that the suspension is supplied into the cylinder through the supply pipe by the reciprocating movement of the piston. In a high-pressure suspension injection pump that sucks in the suspension and discharges the suspension from a delivery pipe, a seating time is provided for the valve body of the one-way valve at the end of the suction stroke and discharge stroke of the suspension. High-pressure pump for suspension injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30269889A JPH03164575A (en) | 1989-11-20 | 1989-11-20 | High pressure pump for injecting suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30269889A JPH03164575A (en) | 1989-11-20 | 1989-11-20 | High pressure pump for injecting suspension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03164575A true JPH03164575A (en) | 1991-07-16 |
Family
ID=17912116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30269889A Pending JPH03164575A (en) | 1989-11-20 | 1989-11-20 | High pressure pump for injecting suspension |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03164575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020059882A (en) * | 2001-01-08 | 2002-07-16 | 광 수 최 | Pump for Cement Mortar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62233485A (en) * | 1986-03-31 | 1987-10-13 | Kurabo Ind Ltd | Driving device for bellows pump |
-
1989
- 1989-11-20 JP JP30269889A patent/JPH03164575A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62233485A (en) * | 1986-03-31 | 1987-10-13 | Kurabo Ind Ltd | Driving device for bellows pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020059882A (en) * | 2001-01-08 | 2002-07-16 | 광 수 최 | Pump for Cement Mortar |
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