JPH10180077A - Automatic diluting feeder for raw liquid to be utilized as agricultural chemicals - Google Patents
Automatic diluting feeder for raw liquid to be utilized as agricultural chemicalsInfo
- Publication number
- JPH10180077A JPH10180077A JP8342037A JP34203796A JPH10180077A JP H10180077 A JPH10180077 A JP H10180077A JP 8342037 A JP8342037 A JP 8342037A JP 34203796 A JP34203796 A JP 34203796A JP H10180077 A JPH10180077 A JP H10180077A
- Authority
- JP
- Japan
- Prior art keywords
- driven
- raw liquid
- pump
- water
- metering pump
- 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.)
- Granted
Links
Classifications
-
- Y02P60/216—
Landscapes
- Hydroponics (AREA)
- Accessories For Mixers (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、原液の自動希釈供
給装置に係り、養液栽培などにおける液体肥料や農薬や
その他薬剤の希釈に利用するための原液の自動希釈供給
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically diluting and supplying an undiluted liquid, and more particularly to an apparatus for automatically diluting and supplying a undiluted liquid for use in diluting liquid fertilizers, pesticides and other chemicals in hydroponics.
【０００２】[0002]
【従来の技術】近年、農園芸分野において養液栽培が普
及し、そのための給液方法は、「養液循環方式」と「か
け流し方式」とに大きく分類される。養液栽培のかけ流
し方式による給液方式を採用した場合、供給される水
に、植物の育成に必要な養分を供給時に溶解させること
が一般的に行われている。その一つの手段として、供給
される水量を検出し、その水量に応じて応動するポンプ
により、水に液体肥料を定量ずつ混入する自動希釈供給
装置がある。2. Description of the Related Art In recent years, nutrient solution cultivation has become widespread in the field of agriculture and horticulture, and liquid supply methods therefor are broadly classified into a "nutrient solution circulating method" and a "flowing method". In the case of adopting a liquid supply method based on a pouring method of nutrient cultivation, it is common practice to dissolve nutrients necessary for growing plants in supplied water at the time of supply. As one of the means, there is an automatic dilution and supply device that detects the amount of supplied water and mixes liquid fertilizer into the water by a fixed amount by a pump that responds according to the amount of water.
【０００３】この種の自動希釈供給装置としては、実公
昭６３−５７７０号公報や実公平１−３３１５０号公報
に開示されている。図７は、前述の公報に開示された自
動希釈供給装置の外観を示す斜視図、図８は、この装置
に利用されるポンプ機構を示す断面図である。これら図
面において、１は給水本管、２は給水本管を流れる水量
を計測する流量計、３は給水本管１から分岐した第１の
流入管、４は第１の流入管３に接続された三方電磁弁、
５は三方電磁弁４から延びる第２の流入管、６は三方電
磁弁４から延びる排水管、７は第２の流入管５に接続さ
れた水圧駆動定量ポンプ、８０は液体肥料８の入った原
液容器、９は原液容器８０と水圧駆動定量ポンプ７とを
接続した吸入管、１０は水圧駆動定量ポンプ７と給水本
管１とを接続した原液供給管、１１は給水本管１に液体
肥料８を供給する前記原液供給管１０の注入部位であ
る。[0003] This type of automatic dilution supply apparatus is disclosed in Japanese Utility Model Publication No. 63-5770 and Japanese Utility Model Publication No. 1-350150. FIG. 7 is a perspective view showing the appearance of the automatic dilution and supply device disclosed in the above-mentioned publication, and FIG. 8 is a sectional view showing a pump mechanism used in this device. In these drawings, 1 is a water supply main pipe, 2 is a flow meter for measuring the amount of water flowing through the water supply main pipe, 3 is a first inflow pipe branched from the water supply main pipe 1, and 4 is connected to a first inflow pipe 3. Three-way solenoid valve,
5 is a second inflow pipe extending from the three-way solenoid valve 4, 6 is a drain pipe extending from the three-way solenoid valve 4, 7 is a hydraulically driven metering pump connected to the second inflow pipe 5, 80 is a liquid fertilizer 8 A stock solution container, 9 is a suction pipe connecting the stock solution container 80 and the hydraulic drive metering pump 7, 10 is a stock solution supply pipe connecting the hydraulic drive metering pump 7 and the water main 1, and 11 is a liquid fertilizer for the water main 1. 8 is an injection site of the undiluted solution supply pipe 10 for supplying 8.
【０００４】このような構成において、給水本管１内を
一定の水が流れる毎に、流量計２から送られる電気信号
によって三方電磁弁４を切替え、三方電磁弁４に連なる
第２の流入管５を通じて、水圧駆動式定量ポンプ７に給
水本管１の圧力水を、いわゆる駆動水として与える。ま
た、流量計２から送出される電気信号の消滅により、三
方電磁弁４は、第２の流入管５と排水管６との接続に切
替える。その結果、水圧駆動定量ポンプ７内の駆動水を
排水管６から外部に排出する。このような給排水動作
は、給水本管１内に水が流されている間、連続して行わ
れる。そして、ポンプ７の水受入れ部１０１内に駆動水
が供給されると、ポンプ７内の原液受入れ部１０２に向
けてピストン部１００が前進し、ピストン部１００の前
部に設けられた隔膜１０３が前方に移動する。その結
果、原液受入れ部１０２内の液体肥料８を、隔膜１０３
の移動距離に従った定量だけ吐出させ、定量の液体肥料
８を原液供給管１０を介して給水本管１内に圧入する。
その後、三方電磁弁４の切替えにより、水受入れ部１０
１から駆動水が排出されると、ばね１０４によりピスト
ン部１００が後退し、そのとき、原液容器８０から吸入
管９を経て原液受入れ部１０２内に定量の液体肥料８が
供給される。このような動作を繰り返し行うことで、給
水本管１内を流れる一定量の水に対して一定量の液体肥
料８を溶解させることができ、常に安定した希釈倍率を
得ることができる。In such a configuration, each time a certain amount of water flows in the water supply main pipe 1, the three-way solenoid valve 4 is switched by an electric signal sent from the flow meter 2, and a second inflow pipe connected to the three-way solenoid valve 4 is provided. 5, pressurized water of the water supply main pipe 1 is supplied to a hydraulic drive metering pump 7 as so-called drive water. In addition, the three-way solenoid valve 4 switches to the connection between the second inflow pipe 5 and the drain pipe 6 by the disappearance of the electric signal sent from the flow meter 2. As a result, the drive water in the hydraulic drive metering pump 7 is discharged from the drain pipe 6 to the outside. Such a water supply / drain operation is continuously performed while water is flowing in the water supply main pipe 1. When the driving water is supplied into the water receiving portion 101 of the pump 7, the piston portion 100 advances toward the undiluted solution receiving portion 102 in the pump 7, and the diaphragm 103 provided at the front portion of the piston portion 100 is moved. Move forward. As a result, the liquid fertilizer 8 in the undiluted solution receiving unit 102 is
Of the liquid fertilizer 8 is injected into the water supply main pipe 1 via the undiluted liquid supply pipe 10.
Thereafter, by switching the three-way solenoid valve 4, the water receiving section 10
When the driving water is discharged from 1, the piston portion 100 is retracted by the spring 104, and at that time, a fixed amount of the liquid fertilizer 8 is supplied from the stock solution container 80 into the stock solution receiving portion 102 via the suction pipe 9. By repeating such an operation, a certain amount of liquid fertilizer 8 can be dissolved in a certain amount of water flowing in the water supply main pipe 1, and a stable dilution ratio can always be obtained.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
原液の自動希釈供給装置は、上述したように構成されて
いるため、次のような課題が存在していた。すなわち、
従来の装置を用いて高倍率の希釈を行おうとすると、ピ
ストン部１００の移動量を小さくして、水圧駆動定量ポ
ンプ７からの吐出量を小さくする必要がある。その場
合、原液受入れ部１０２に気泡やゴミ等が入ると水圧駆
動定量ポンプ７内の隔膜１０３に作動異常が起こり易
く、所望の液体肥料８の希釈倍率を得ることができない
ばかりか、気泡の混入によりエアーロックが生じ、液体
肥料８の吸入／吐出が不可能になることもある。また、
吐出量の小さな電磁ポンプ等が市販されているが、少量
吐出のものでは、吐出圧力が小さいため給水本管１の水
圧に打ち勝って液体肥料８を注入することができない。
また高圧力の電磁ポンプは形状も大きく高価であるため
実用的ではないという問題点もあった。However, the conventional automatic diluting and feeding apparatus for a stock solution has the following problems because it is configured as described above. That is,
In order to perform high-magnification dilution using a conventional apparatus, it is necessary to reduce the amount of movement of the piston unit 100 and the amount of discharge from the hydraulically driven metering pump 7. In this case, if air bubbles or dust enters the undiluted solution receiving section 102, the malfunction of the diaphragm 103 in the hydraulic drive metering pump 7 is likely to occur, so that not only the desired dilution ratio of the liquid fertilizer 8 cannot be obtained, but also the mixing of air bubbles. As a result, an air lock may be generated, and suction / discharge of the liquid fertilizer 8 may not be possible. Also,
Electromagnetic pumps and the like with a small discharge amount are commercially available, but those with a small discharge amount cannot inject the liquid fertilizer 8 overcoming the water pressure of the water supply main pipe 1 because the discharge pressure is small.
Further, the high-pressure electromagnetic pump has a problem that it is not practical because it is large and expensive.
【０００６】本発明は、上述の課題を解決するためにな
されたもので、特に、微量の原液でも設定通りの希釈倍
率を得ることを可能にした原液の自動希釈供給装置を提
供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and in particular, has as its object to provide an automatic dilution and supply apparatus for a stock solution that can obtain a dilution ratio as set even with a very small stock solution. And
【０００７】[0007]
【課題を解決するための手段】請求項１の発明におい
て、農業に利用される原液の自動希釈供給装置は、給水
本管の通過流量を検出する流量計と、流量計の検出信号
によって開閉する三方弁と、この三方弁の開閉によって
駆動するポンプ機構と、ポンプ機構に原液を供給する原
液容器と、給水本管から分岐し、三方弁を経由してポン
プ機構に接続された流入路とを備え、ポンプ機構から吐
出する所定量の原液を給水本管内に流入させて、給水本
管内を流れる所定量の水で所定量の原液を希釈する自動
希釈装置において、ポンプ機構は、給水本管から流入す
る水の圧力で駆動する水圧駆動定量ポンプと、水圧駆動
定量ポンプから吐出する原液の圧力で駆動する原液圧駆
動定量ポンプとからなり、水圧駆動定量ポンプは、流入
路からの水圧に応動すると共に前後に隔膜をもった主動
ピストン部と、主動ピストン部の後方に位置して、主動
ピストン部の移動距離を規制する主動側の移動距離調整
手段と、主動ピストン部の前方に位置し、原液容器から
の原液を受け入れる原液受入れ部と、主動ピストン部の
後方に位置し、流入路からの水を受け入れる水受入れ部
と、主動ピストン部を主動側の移動距離調整手段に向け
て付勢するバネ部材とを有し、原液圧駆動定量ポンプ
は、原液受入れ部から吐出した原液の圧力に応動すると
共に前後に隔膜をもった従動ピストン部と、従動ピスト
ン部の後方に位置して、従動ピストン部の移動距離を規
制する従動側の移動距離調整手段と、従動ピストン部の
前方に位置し、水圧駆動定量ポンプから吐出する原液を
貯留する原液貯留部と、従動ピストン部を従動側の移動
距離調整手段に向けて付勢するバネ部材とを有し、水圧
駆動定量ポンプの原液受入れ部と原液圧駆動定量ポンプ
の原液貯留部とを連通路を介して連結させ、水圧駆動定
量ポンプから吐出する原液の吐出量に対して、原液圧駆
動定量ポンプの貯留量が小さくなるように調整し、水圧
駆動定量ポンプからの原液の吐出量と原液圧駆動定量ポ
ンプで原液を貯留する貯留量との差額を、給水本管に連
通した原液供給路に流し込むことを特徴とする。According to the first aspect of the present invention, an apparatus for automatically diluting and supplying an undiluted solution used for agriculture is opened and closed by a flow meter for detecting a flow rate passing through a water supply main pipe and a detection signal of the flow meter. A three-way valve, a pump mechanism driven by opening and closing the three-way valve, a stock solution container for supplying a stock solution to the pump mechanism, and an inflow passage branched from the water supply main pipe and connected to the pump mechanism via the three-way valve. In an automatic diluting device provided with a predetermined amount of undiluted solution discharged from a pump mechanism flowing into a water supply main pipe and diluting a predetermined amount of the undiluted solution with a predetermined amount of water flowing through the water supply main pipe, the pump mechanism is provided from the water supply main pipe. It consists of a hydraulically driven metering pump driven by the pressure of the inflowing water and a stock hydraulically driven metering pump driven by the pressure of the stock solution discharged from the hydraulically driven metering pump. The hydraulically driven metering pump responds to the water pressure from the inflow passage. A driving piston having a diaphragm in front and back, a driving distance adjusting means on the driving side which is located behind the driving piston and regulates a moving distance of the driving piston, and which is located in front of the driving piston; A stock solution receiving portion for receiving a stock solution from a stock solution container, a water receiving portion located behind the driving piston portion for receiving water from the inflow passage, and biasing the driving piston portion toward the moving distance adjusting means on the driving side. A spring member, and a stock solution pressure driven metering pump, which is responsive to the pressure of the stock solution discharged from the stock solution receiving portion and has a driven piston portion having a diaphragm in front and back, and a driven piston portion located behind the driven piston portion, A moving distance adjusting means on the driven side that regulates the moving distance of the unit, a stock solution storage unit that is located in front of the driven piston unit and stores the stock solution discharged from the hydraulically driven metering pump, and a driven piston unit A spring member that urges the driven-side moving distance adjusting means, and connects the stock solution receiving portion of the hydraulically driven metering pump and the stock solution storage portion of the hydraulically driven metering pump via a communication path, and is hydraulically driven. Adjust the amount of stock solution discharged from the metering pump to be smaller than the amount of stock solution discharged from the metering pump, and store the stock solution with the amount of stock solution discharged from the hydraulically driven metering pump and the metering pump driven by stock solution. It is characterized in that the difference from the stored amount is poured into a stock solution supply passage communicating with a water supply main pipe.
【０００８】この原液の自動希釈供給装置においては、
給水本管内を流れる流量を流量計で検出した後、この検
出信号に基づいて三方弁を切り替えることで、流入路を
介して、給水本管から流入した水は、水圧駆動定量ポン
プの水受入れ部内に取り込まれ、水の圧力により主動ピ
ストン部が原液受入れ部に向けて前進し、主動ピストン
部の前部に設けられた隔膜が前方に移動する。その結
果、原液受入れ部内の原液を、隔膜の移動距離に従った
定量だけ吐出させ、定量の原液を原液受入れ部から吐出
させると同時に、この原液を、連通路を介して、原液圧
駆動定量ポンプの原液貯留部内に貯留させる。このと
き、水圧駆動定量ポンプから吐出する原液の吐出量に対
して、原液圧駆動定量ポンプの貯留量が僅かに小さくな
るように調整された場合、水圧駆動定量ポンプからの原
液の吐出量と、原液圧駆動定量ポンプで原液を貯留する
貯留量とに僅かな差額が発生する。そして、この差額分
の原液を、給水本管に連通した原液供給路に流し込むこ
とで、給水本管内を流れる一定量の水に対して微量の原
液を溶解させることができる。また、流量計から送出さ
れる電気信号の消滅により、三方弁を切り替える。その
結果、水圧駆動定量ポンプにおいて水受入れ部からの排
水が達成され、ばね力により、主動ピストン部が移動距
離調整手段で規制される位置まで後退する。そのとき、
原液圧駆動定量ポンプの原液貯留部内に貯留されていた
原液が、連通路を介して水圧駆動定量ポンプの原液受入
れ部内に引き戻されると同時に、差額分の原液が原液容
器から補充され、原液受入れ部内が所定量の原液で満た
されることになる。このような動作を繰り返し行うこと
で、ポンプ機構による所望の高倍率の希釈液が得られ
る。また、ポンプ機構に採用されている水圧駆動定量ポ
ンプと原液圧駆動定量ポンプとは略同等な構成を有して
いるので、装置自体の構成が簡単になり、低コスト化を
可能にする。[0008] In this automatic dilution and supply apparatus for a stock solution,
After detecting the flow rate flowing in the water supply main line with the flow meter, the three-way valve is switched based on this detection signal, so that the water flowing in from the water supply main line through the inflow passage is supplied to the water receiving portion of the hydraulic pressure-driven metering pump. The driving piston moves forward toward the undiluted liquid receiving part by the pressure of the water, and the diaphragm provided at the front of the driving piston moves forward. As a result, the undiluted solution in the undiluted solution receiving section is discharged by a fixed amount according to the moving distance of the diaphragm, and a fixed amount of undiluted solution is discharged from the undiluted solution receiving portion. In the undiluted solution storage section. At this time, the discharge amount of the undiluted solution from the hydraulically driven metering pump is adjusted with respect to the discharge amount of the undiluted solution discharged from the hydraulically driven metered pump, when the storage amount of the undiluted hydraulically driven metering pump is adjusted to be slightly smaller. There is a slight difference between the amount of the stock solution stored by the stock solution pressure driven metering pump and the amount of stock. Then, by flowing the undiluted solution corresponding to the difference into the undiluted solution supply passage communicating with the water supply main, a trace amount of the undiluted solution can be dissolved in a certain amount of water flowing in the water supply main. Further, the three-way valve is switched by the disappearance of the electric signal sent from the flow meter. As a result, drainage from the water receiving portion is achieved in the hydraulic drive metering pump, and the driven piston portion retreats to a position regulated by the movement distance adjusting means by the spring force. then,
The undiluted solution stored in the undiluted solution storage section of the undiluted pressure driven pump is returned to the undiluted solution receiving section of the hydraulically driven fixed-quantity pump via the communication passage, and at the same time, the undiluted solution corresponding to the difference is replenished from the undiluted solution container to the undiluted solution receiving section. Is filled with a predetermined amount of the stock solution. By repeating such an operation, a desired high-magnification diluent is obtained by the pump mechanism. In addition, since the hydraulic drive metering pump and the stock fluid pressure metering pump employed in the pump mechanism have substantially the same configuration, the configuration of the device itself is simplified and the cost can be reduced.
【０００９】この場合、選択的に駆動する複数個の原液
圧駆動定量ポンプを並列に配置すると好ましい。このよ
うな構成を採用した場合、それぞれの原液圧駆動定量ポ
ンプの原液貯留部を、異なった許容量に設定しておくこ
とで、希釈倍率を変える必要性に迫られるごとに各移動
距離調整手段を調整せずとも、異なった倍率の希釈を簡
単に作り出すことができる。In this case, it is preferable to arrange a plurality of raw liquid pressure driven metering pumps that are selectively driven in parallel. In the case of adopting such a configuration, by setting the stock solution storage sections of the stock solution pressure driven metering pumps to different allowable amounts, each moving distance adjusting means is required each time the necessity of changing the dilution ratio is approached. It is possible to easily create different dilutions of the dilution without having to adjust.
【００１０】また、水圧駆動定量ポンプと原液圧駆動定
量ポンプとを内部にもった一体型のポンプ機構を備える
と好ましい。このような構成を採用した場合、装置の取
り扱いが容易になり、設置場所に応じた形状にすること
ができる。Further, it is preferable to provide an integrated pump mechanism having a water pressure driven metering pump and a stock pressure driven metering pump inside. When such a configuration is adopted, handling of the device is facilitated, and the device can be formed in a shape according to the installation location.
【００１１】[0011]
【発明の実施の形態】以下、図面と共に本発明による原
液の自動希釈供給装置の好適な実施形態について詳細に
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an automatic stock solution diluting and supplying apparatus according to the present invention will be described below in detail with reference to the drawings.
【００１２】（第１の実施形態）図１は、本実施形態に
係る原液の自動希釈供給装置を示す斜視図である。同図
に示す原液の自動希釈供給装置Ａは、給水本管１に一定
の流量の水が流れる毎に、その都度開閉する電気接点
（図示せず）をもった流量計２と、流量計２の電気接点
に連動するリレー（図示せず）により開閉する三方電磁
弁４とを有している。この三方電磁弁４には、流量計２
の上流側において給水本管１から分岐した第１の流入路
（以下、「第１の流入管」という）３と、三方電磁弁４
から後述の水圧駆動定量ポンプ２０に延びる第２の流入
路（以下、「第２の流入管」という）５と、三方電磁弁
４から外部に向けて延びる排水路（以下、「排水管」と
いう）６とが接続されている。(First Embodiment) FIG. 1 is a perspective view showing an apparatus for automatically diluting and supplying a stock solution according to this embodiment. The undiluted solution automatic dilution supply apparatus A shown in FIG. 1 includes a flow meter 2 having an electric contact (not shown) that opens and closes each time a constant flow of water flows through the water supply main pipe 1, and a flow meter 2. And a three-way solenoid valve 4 that is opened and closed by a relay (not shown) interlocked with the electrical contacts of the above. The three-way solenoid valve 4 has a flow meter 2
A first inflow path (hereinafter, referred to as a “first inflow pipe”) 3 branched from the water supply main pipe 1 on the upstream side of the
, A second inflow path (hereinafter, referred to as “second inflow pipe”) 5 extending to a hydraulic drive metering pump 20 described below, and a drainage path (hereinafter, referred to as “drain pipe”) extending from the three-way solenoid valve 4 to the outside. 6) are connected.
【００１３】第２の流入管５には、給水本管１から流入
する水の圧力で駆動してポンプ機構Ｐの一部を構成する
水圧駆動定量ポンプ２０が接続されている。この水圧駆
動定量ポンプ２０は、図２に示すように、第２の流入管
５からの水圧に応動する主動ピストン部２１を有し、こ
の主動ピストン部２１は、円筒状のケーシング２２内に
装填されていると共に、前後にヘッド２３，２４を有し
ている。なお、前後のヘッド２３，２４は連結竿３０に
よって連結されている。更に、主動ピストン部２１は前
後一対の隔壁２５，２６を有し、前側の隔壁２５の外端
はケーシング２２の内壁面に固定され、その中央部分は
前側のヘッド２３の端部に固定されている。また、後側
の隔壁２６の外端はケーシング２２の内壁面に固定さ
れ、その中央部分は後側のヘッド２４の端部に固定され
ている。従って、このような隔壁２５，２６を利用する
ことで、主動ピストン部２１は、ケーシング２２に対し
てシールされながら前後に移動することができる。The second inflow pipe 5 is connected to a hydraulically driven metering pump 20 which is driven by the pressure of the water flowing from the water supply main pipe 1 and forms a part of the pump mechanism P. As shown in FIG. 2, the hydraulic drive metering pump 20 has a driving piston 21 that responds to the water pressure from the second inflow pipe 5, and the driving piston 21 is loaded in a cylindrical casing 22. And has heads 23 and 24 at the front and back. The front and rear heads 23 and 24 are connected by a connecting rod 30. Further, the driving piston portion 21 has a pair of front and rear partitions 25, 26, the outer end of the front partition 25 is fixed to the inner wall surface of the casing 22, and the central portion thereof is fixed to the end of the front head 23. I have. The outer end of the rear partition wall 26 is fixed to the inner wall surface of the casing 22, and the central portion is fixed to the end of the rear head 24. Therefore, by using such partition walls 25 and 26, the driving piston portion 21 can move back and forth while being sealed with respect to the casing 22.
【００１４】更に、ケーシング２２内において、前側の
ヘッド２３の前方には、この移動を許容する容積をもっ
た原液受入れ部２７が形成され、原液受入れ部２７には
吸入管９の一端が接続され、この吸入管９の他端は、農
業に利用される原液（例えば、液体肥料や農薬やその他
の薬剤）Ｒを収容した原液容器８０に接続されている
（図１参照）。従って、主動ピストン部２１の後退によ
り、原液受入れ部２７内には原液Ｒを充填させることが
できる。また、ケーシング２２内において、後側のヘッ
ド２４の後方にも、この移動を許容する容積をもった水
受入れ部２８が形成され、この水受入れ部２８には第２
の流入管５が接続されている。従って、第２の流入管５
からの水を受け入れることができると共に、第２の流入
管５から流入した水の圧力により、主動ピストン部２１
を前進させることができる。Further, in the casing 22, in front of the head 23 on the front side, a stock solution receiving portion 27 having a capacity to allow this movement is formed, and one end of the suction pipe 9 is connected to the stock solution receiving portion 27. The other end of the suction pipe 9 is connected to a stock solution container 80 containing a stock solution R used for agriculture (for example, liquid fertilizer, pesticide or other chemicals) (see FIG. 1). Therefore, the stock solution R can be filled in the stock solution receiving portion 27 by the retreat of the driving piston portion 21. In the casing 22, a water receiving portion 28 having a capacity to allow this movement is also formed behind the rear head 24, and the water receiving portion 28
Are connected. Therefore, the second inflow pipe 5
From the second piston 5 by the pressure of the water flowing from the second inflow pipe 5.
Can be advanced.
【００１５】ケーシング２２内には、主動ピストン部２
１を水受入れ部２８側に向けて付勢するバネ部材（例え
ば、螺旋バネ）２９が設けられ、このバネ部材２９は、
ケーシング２２の内壁面から内方に突出した突起部２２
ａと主動ピストン部２１のヘッド２４との間に装填され
ている。更に、ケーシング２２には、主動ピストン部２
１の水受入れ部２８側の移動距離を規制する主動側の移
動距離調整手段３１が設けられている。この移動距離調
整手段３１は、ダイヤルスクリューを構成すると共に、
水受入れ部２８内に突出し且つケーシング２２に対して
所定のピッチで螺着されたネジ部３１ａと、ネジ部３１
ａを所定の方向に回すための操作部３１ｂとからなる。
従って、バネ部材２９の付勢力で戻ってきた主動ピスト
ン部２１をネジ部３１ａに突き当てることができる。そ
して、操作部３１ｂを所定量だけ回転させ、ネジ部３１
ａが水受入れ部２８内に突出する量を変えることで、主
動ピストン部２１の移動量を変えることができる。な
お、ケーシング２２には、主動ピストン部２１の往復時
の空気抵抗を無くすための空気抜き穴３７が設けられて
いる。In the casing 22, the driving piston 2 is provided.
A spring member (for example, a helical spring) 29 for urging the first member 1 toward the water receiving portion 28 is provided.
Projection 22 projecting inward from the inner wall surface of casing 22
a and the head 24 of the driving piston 21. Further, the driving piston portion 2 is provided on the casing 22.
There is provided a moving distance adjusting means 31 on the driving side which regulates the moving distance on the side of the first water receiving portion 28. This moving distance adjusting means 31 constitutes a dial screw,
A screw portion 31a projecting into the water receiving portion 28 and screwed at a predetermined pitch to the casing 22;
and an operation unit 31b for turning the "a" in a predetermined direction.
Therefore, the driving piston portion 21 returned by the urging force of the spring member 29 can be abutted against the screw portion 31a. Then, the operation part 31b is rotated by a predetermined amount, and the screw part 31 is rotated.
By changing the amount of “a” protruding into the water receiving portion 28, the amount of movement of the driving piston portion 21 can be changed. The casing 22 is provided with an air vent hole 37 for eliminating air resistance when the driving piston 21 reciprocates.
【００１６】前述した水圧駆動定量ポンプ２０には、原
液受入れ部２７から吐出する原液Ｒの圧力で駆動してポ
ンプ機構Ｐの一部を構成する原液圧駆動定量ポンプ４０
が、連通路（以下、「連通管」という）３９を介して連
結されている。この原液圧駆動定量ポンプ４０は、水圧
駆動定量ポンプ２０と略同様な構成を有している。The above-mentioned hydraulically driven metering pump 20 includes a stock solution pressure driven pump 40 which is driven by the pressure of the stock solution R discharged from the stock solution receiving portion 27 and forms a part of the pump mechanism P.
Are connected via a communication passage (hereinafter, referred to as a “communication pipe”) 39. The stock hydraulic drive metering pump 40 has substantially the same configuration as the hydraulic drive metering pump 20.
【００１７】原液圧駆動定量ポンプ４０は、連通管３９
からの原液Ｒの圧力に応動する従動ピストン部４１を有
し、この従動ピストン部４１は、円筒状のケーシング４
２内に装填されると共に、前後にヘッド４３，４４を有
している。なお、前後のヘッド４３，４４は連結竿５０
によって連結されている。更に、従動ピストン部４１は
前後一対の隔壁４５，４６を有し、前側の隔壁４５の外
端はケーシング４２の内壁面に固定され、その中央部分
は前側のヘッド４３の端部に固定されている。また、後
側の隔壁４６の外端はケーシング４２の内壁面に固定さ
れ、その中央部分は後側のヘッド４４の端部に固定され
ている。従って、このような隔壁４５，４６を利用する
ことで、従動ピストン部４１は、ケーシング４２に対し
てシールされながら前後に移動することができる。The stock pressure driven metering pump 40 includes a communication pipe 39.
A driven piston portion 41 that responds to the pressure of the undiluted solution R from the cylinder, and the driven piston portion 41
2 and has heads 43 and 44 in front and back. The front and rear heads 43 and 44 are connected to a connecting rod 50.
Are linked by Further, the driven piston portion 41 has a pair of front and rear partitions 45 and 46, an outer end of the front partition 45 is fixed to an inner wall surface of the casing 42, and a central portion thereof is fixed to an end of the front head 43. I have. Further, the outer end of the rear partition wall 46 is fixed to the inner wall surface of the casing 42, and the central portion thereof is fixed to the end of the rear head 44. Therefore, by using such partition walls 45 and 46, the driven piston portion 41 can move back and forth while being sealed with respect to the casing 42.
【００１８】更に、ケーシング４２内において、前側の
ヘッド４３の前方には、この移動を許容する容積をもっ
た原液貯留部４７が形成され、原液貯留部４７には連通
管３９が接続されている。従って、従動ピストン部４１
の後退により、原液貯留部４７内には、水圧駆動定量ポ
ンプ２０から吐出した原液Ｒが貯留される。また、後側
のヘッド４４の後方にも、この移動を許容する容積をも
ったヘッド受入れ部４８が形成され、このヘッド受入れ
部４８は、空気管５２を介して外部に開放されている。
従って、原液貯留部４７内に原液Ｒを充填させること
で、従動ピストン部４１を後退させることができる。Further, in the casing 42, in front of the front head 43, a stock solution storage 47 having a capacity to allow this movement is formed, and a communication pipe 39 is connected to the stock solution storage 47. . Therefore, the driven piston portion 41
By retreating, the stock solution R discharged from the hydraulic drive metering pump 20 is stored in the stock solution storage unit 47. A head receiving portion 48 having a capacity to allow this movement is also formed behind the rear head 44, and the head receiving portion 48 is opened to the outside via an air pipe 52.
Accordingly, by filling the stock solution R into the stock solution storage unit 47, the driven piston unit 41 can be retracted.
【００１９】ケーシング４２内には、従動ピストン部４
１をヘッド受入れ部４８側に向けて付勢するバネ部材
（例えば、螺旋バネ）４９が設けられ、このバネ部材４
９は、ケーシング４２の内壁面から内方に突出した突起
部４２ａと従動ピストン部４１のヘッド４４との間に装
填されている。更に、ケーシング４２には、従動ピスト
ン部４１の移動距離を規制する従動側移動距離調整手段
５１が設けられている。この移動距離調整手段５１は、
ダイヤルスクリューを構成すると共に、ヘッド受入れ部
４８内に突出し且つケーシング４２に対して所定のピッ
チで螺着されたネジ部５１ａと、ネジ部５１ａを所定の
方向に回すための操作部５１ｂとからなる。なお、ケー
シング４２には、従動ピストン部４１の往復時の空気抵
抗を無くすための空気抜き穴３８が設けられている。In the casing 42, the driven piston 4
A spring member (for example, a helical spring) 49 for biasing the spring member 1 toward the head receiving portion 48 is provided.
Reference numeral 9 is mounted between the protrusion 42 a projecting inward from the inner wall surface of the casing 42 and the head 44 of the driven piston 41. Further, the casing 42 is provided with driven-side moving distance adjusting means 51 for regulating the moving distance of the driven piston portion 41. This moving distance adjusting means 51
A screw part 51a that constitutes a dial screw, projects into the head receiving part 48, and is screwed to the casing 42 at a predetermined pitch, and an operation part 51b for turning the screw part 51a in a predetermined direction. . The casing 42 is provided with an air vent hole 38 for eliminating air resistance when the driven piston portion 41 reciprocates.
【００２０】従って、バネ部材４９の付勢力で戻ってき
た従動ピストン部４１をネジ部５１ａの端面に突き当て
ることができる。そして、操作部５１ｂを所定量だけ回
転させ、ネジ部５１ａがヘッド受入れ部４８内に突出す
る量を変えることで、従動ピストン部４１の移動量を変
えることができる。更に、連通管３９の途中には原液供
給路（以下、「原液供給管」という）５３が接続され、
この原液供給路５３は給水本管１に接続されている。従
って、原液貯留部４７で受入れられなかった余剰な原液
Ｒは、原液供給路５３を通って給水本管１に流れ込むこ
とになる。Therefore, the driven piston portion 41 returned by the urging force of the spring member 49 can abut against the end face of the screw portion 51a. The amount of movement of the driven piston portion 41 can be changed by rotating the operation portion 51b by a predetermined amount and changing the amount by which the screw portion 51a projects into the head receiving portion 48. Further, a stock solution supply path (hereinafter, referred to as “stock solution supply pipe”) 53 is connected in the middle of the communication pipe 39,
The stock solution supply path 53 is connected to the water supply main pipe 1. Accordingly, the surplus undiluted solution R not received by the undiluted solution storage unit 47 flows into the water supply main pipe 1 through the undiluted solution supply path 53.
【００２１】なお、符号５４は、原液受入れ部２７から
原液容器８０に向けて原液Ｒが逆流するのを防止する逆
止弁であり、符号５５は、原液受入れ部２７から空気を
適切に出すための空気抜き弁であり、符号５６は、給水
本管１から原液供給管５３に向けて水が流れ込むのを防
止する逆止弁である。次に、前述した構成の自動希釈供
給装置Ａの動作について説明する。なお、水圧駆動定量
ポンプ２０の原液受入れ部２７から吐出する原液Ｒの吐
出量に対して、原液圧駆動定量ポンプ４０の原液貯留部
４７で原液Ｒを貯留し得る量が僅かに少なくなるよう
に、移動距離調整手段３１，５１で予め調整してある。Reference numeral 54 denotes a check valve for preventing the undiluted solution R from flowing back from the undiluted solution receiving portion 27 toward the undiluted solution container 80, and numeral 55 indicates a valve for properly discharging air from the undiluted solution receiving portion 27. Reference numeral 56 denotes a check valve for preventing water from flowing from the water supply main pipe 1 toward the stock solution supply pipe 53. Next, the operation of the automatic dilution and supply device A having the above-described configuration will be described. It should be noted that the amount of the undiluted solution R that can be stored in the undiluted solution storage unit 47 of the undiluted solution pressure-driven quantitative pump 40 is slightly smaller than the discharge amount of the undiluted solution R discharged from the undiluted solution receiving unit 27 of the hydraulic drive quantitative pump 20. Are adjusted in advance by the moving distance adjusting means 31 and 51.
【００２２】先ず、給水本管１内を流れる流量を流量計
２で検出し、一定流量を検出するごとに流量計２から電
気信号が送出されて三方電磁弁４を切り替えることで、
流入管３，５を介して、水圧駆動定量ポンプ２０の水受
入れ部２８内に水が流入する。このとき、給水本管１か
ら流入した水の圧力により、主動ピストン部２１が原液
受入れ部２７に向けて前進し、隔膜２５が前方に移動す
る。その結果、原液受入れ部２７内の原液Ｒを、隔膜２
５の移動距離に従った定量だけ吐出させると同時に、こ
の原液Ｒを、連通管３９を介して、原液圧駆動定量ポン
プ４０の原液貯留部４７内に貯留させる。このとき、水
圧駆動定量ポンプ２０からの原液Ｒの吐出量と、原液圧
駆動定量ポンプ４０で原液Ｒを貯留する貯留量とに僅か
な差額が発生する。そして、この差額分の原液Ｒが、原
液供給管５３に流れ込むことで、給水本管１内を流れる
一定量の水に対して微量の原液Ｒを希釈供給することが
できる。First, the flow rate flowing through the water supply main pipe 1 is detected by the flow meter 2, and every time a constant flow rate is detected, an electric signal is transmitted from the flow meter 2 to switch the three-way solenoid valve 4.
Water flows into the water receiving section 28 of the hydraulic drive metering pump 20 via the inflow pipes 3 and 5. At this time, due to the pressure of the water flowing from the water supply main pipe 1, the driving piston portion 21 advances toward the undiluted solution receiving portion 27, and the diaphragm 25 moves forward. As a result, the undiluted solution R in the undiluted solution receiving unit 27 is transferred to the diaphragm 2
At the same time, the undiluted solution R is discharged in the undiluted solution storage section 47 of the undiluted liquid pressure driven quantitative pump 40 through the communication pipe 39 at the same time as discharging the fixed amount according to the moving distance of No. 5. At this time, a slight difference occurs between the discharge amount of the stock solution R from the hydraulic drive metering pump 20 and the storage amount of the stock solution R stored by the stock pressure drive pump 40. Then, the undiluted solution R corresponding to the difference flows into the undiluted solution supply pipe 53, whereby a small amount of undiluted solution R can be diluted and supplied to a certain amount of water flowing in the water supply main pipe 1.
【００２３】また、流量計２から送出される電気信号の
消滅により、三方電磁弁４を切り替える。その結果、第
１の流入管３が遮断され、第２の流入管５と排水管６と
が連通し、水圧駆動定量ポンプ２０の水受入れ部２８か
ら排水させる。そして、バネ部材２９のばね力により主
動ピストン部２１が移動距離調整手段３１のネジ部３１
ａの端面に当接する位置まで後退する。そのとき、原液
圧駆動定量ポンプ４０の原液貯留部４７内に貯留されて
いた原液Ｒが、従動ピストン部４１の隔膜４５の移動距
離に従った定量だけ吐出し、連通管３９を介して水圧駆
動定量ポンプ２０の原液受入れ部２７内に引き戻され
る。これと同時に、差額分の原液Ｒが原液容器８０から
補充されることで、原液受入れ部２７内が所定量の原液
Ｒで満たされることになる。このような動作を繰り返し
行うことで、給水本管１を流れる流量が変動した場合で
も、ポンプ機構Ｐによる所望の高倍率の希釈液が得られ
る。The three-way solenoid valve 4 is switched by the disappearance of the electric signal sent from the flow meter 2. As a result, the first inflow pipe 3 is shut off, the second inflow pipe 5 and the drain pipe 6 communicate with each other, and the water is drained from the water receiving section 28 of the hydraulically driven metering pump 20. The driving piston 21 is moved by the spring force of the spring member 29 so that the screw 31
It retracts to the position where it comes into contact with the end face of a. At this time, the undiluted solution R stored in the undiluted solution storage portion 47 of the undiluted solution pressure driven pump 40 discharges a fixed amount according to the moving distance of the diaphragm 45 of the driven piston portion 41, and is hydraulically driven through the communication pipe 39. It is pulled back into the stock solution receiving section 27 of the metering pump 20. At the same time, the undiluted solution R is replenished from the undiluted solution container 80 by the difference, so that the undiluted solution receiving section 27 is filled with a predetermined amount of undiluted solution R. By repeating such an operation, a desired high-magnification diluent by the pump mechanism P can be obtained even when the flow rate flowing through the water supply main pipe 1 fluctuates.
【００２４】［実験例１］自動希釈供給装置Ａを直径５
０ｍｍ の給水本管１に取り付け、ダイヤルスクリュー
３１により原液受入れ部２７の吐出予定容積を５ｍｌに
設定し、一方、ダイヤルスクリュー５１により原液貯留
部４７の貯留予定容積を４．９ｍｌに設定した。ここで
直径５０ｍｍの給水本管１に水圧２Ｋｇ／ｃｍ2で流量
５０リットル／分の水を流し、１リットルが流れる都
度、流量計２からの信号を受けて水圧駆動定量ポンプ２
０を作動させた。そして、給水本管１の下流で希釈水を
採取し、化学分析をした結果、液体肥料Ｒは±５％の誤
差で１０，０００倍の濃度に希釈されていることが確認
できた。すなわち、原液圧駆動定量ポンプ４０の最大液
体肥料貯留量よりやや大きな吐出量を水圧駆動定量ポン
プ２０で設定することにより、高希釈倍率を得ることが
できる。[Experimental Example 1] The automatic dilution and supply device A was set to a diameter of 5
It was attached to the water supply main pipe 1 of 0 mm 2, and the planned discharge volume of the stock solution receiving section 27 was set to 5 ml by the dial screw 31, while the planned storage volume of the stock solution storage section 47 was set to 4.9 ml by the dial screw 51. Here, water is flowed at a flow rate of 50 liters / minute at a water pressure of 2 kg / cm 2 through a water supply main pipe 1 having a diameter of 50 mm, and every time 1 liter flows, a signal from the flow meter 2 is received to receive a signal from the flow meter 2.
0 was activated. Then, dilution water was collected downstream of the water supply main pipe 1 and subjected to chemical analysis. As a result, it was confirmed that the liquid fertilizer R was diluted to a concentration 10,000 times with an error of ± 5%. That is, by setting the discharge amount slightly larger than the maximum liquid fertilizer storage amount of the raw liquid pressure driven metering pump 40 by the hydraulic driven metering pump 20, a high dilution ratio can be obtained.
【００２５】また、従来型のポンプ（図７及び図８参
照）において、１回の液体肥料の吐出量を０．１ｃｃの
ように小さく設定した場合、原液受入れ部１０２に空気
が混入すると、原液受入れ部１０２からの吐出量が少な
いため、その中の空気が圧縮されるだけで気泡は完全に
抜けず、エアーロックを起こし、原液容器８０から液体
肥料を吸引しなかったり、所望の液体肥料の希釈倍率を
得られない場合があった。ところが、本実施形態の原液
受入れ部２７に空気が入っても、水圧駆動定量ポンプ２
０の吐出量が大きいため、空気弁５５により容易に空気
抜きが行われ、エアロックを起こすことがない。例え
ば、原液受入れ部２７内に５ｍｌ程度の気泡を入れ、２
ｋｇ／ｃｍ2の水圧を流入管５に加えたところ、主動ピ
ストン部２１の３回の往復作動で気泡抜きが完了した。In the conventional pump (see FIGS. 7 and 8), when the discharge amount of liquid fertilizer at one time is set as small as 0.1 cc, when air is mixed into the raw liquid receiving portion 102, the raw liquid Since the amount of discharge from the receiving part 102 is small, the air therein is only compressed and the air bubbles are not completely removed, causing an air lock and preventing the liquid fertilizer from being sucked from the stock solution container 80 or the desired liquid fertilizer. In some cases, the dilution ratio could not be obtained. However, even if air enters the stock solution receiving section 27 of the present embodiment, the hydraulically driven
Since the discharge amount of “0” is large, air is easily released by the air valve 55, and air lock does not occur. For example, air bubbles of about 5 ml are put in the undiluted solution receiving section 27, and 2
When a water pressure of kg / cm 2 was applied to the inflow pipe 5, the bubble removal was completed by the three reciprocating operations of the driving piston 21.
【００２６】（第２の実施形態）この実施形態は、一個
の水圧駆動定量ポンプに対して、二個の原液圧駆動定量
ポンプを並列に配置したものである。なお、第１の実施
形態に係る自動希釈供給装置Ａと同一又は同等な構成部
分には同一の符号を付し、その説明は省略する。(Second Embodiment) In this embodiment, two raw liquid pressure driven metering pumps are arranged in parallel with one hydraulic driven metering pump. Note that the same or equivalent components as those of the automatic dilution and supply device A according to the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【００２７】図３及び図４に示すように、この実施形態
に係る自動希釈供給装置Ｂは、一個の水圧駆動定量ポン
プ２０と、選択的に駆動する第１及び第２の原液圧駆動
定量ポンプ６０，７０とを有している。第１の原液圧駆
動定量ポンプ６０は、第１実施形態で説明したポンプ４
０と略同一の構成を有しているが、後側のヘッド４４の
後方に、この移動を許容する容積をもった水受入れ部６
１が形成されている点で相違する。また、水受入れ部６
１から流入路（以下、「流入管」という）６２が延び
て、給水本管１に接続され、流入管６２の途中に三方電
磁弁６３が設けられ、三方電磁弁６３から排水管（以
下、「排水路」という）６４が延びている。As shown in FIGS. 3 and 4, the automatic dilution and supply device B according to this embodiment comprises a single hydraulically driven metering pump 20 and first and second undiluted liquid pressure driven metering pumps selectively driven. 60 and 70. The first raw liquid pressure driven metering pump 60 is the pump 4 described in the first embodiment.
0, but behind the head 44 on the rear side, a water receiving portion 6 having a capacity to allow this movement.
1 is formed. In addition, water receiving section 6
An inflow passage (hereinafter, referred to as an “inflow pipe”) 62 extends from the intake pipe 1 and is connected to the water supply main pipe 1. A three-way solenoid valve 63 is provided in the middle of the inflow pipe 62. A “drainage channel” 64 extends.
【００２８】同様に、第２の原液圧駆動定量ポンプ７０
も後側のヘッド４４の後方に、水受入れ部７１をもって
いる。また、水受入れ部７１から流入路（以下、「流入
管」という）７２が延びて、給水本管１に接続され、流
入管７２の途中に三方電磁弁７３が設けられ、三方電磁
弁７３から排水管（以下、「排水路」という）７４が延
びている。Similarly, the second raw liquid pressure driven metering pump 70
Also has a water receiving part 71 behind the head 44 on the rear side. An inflow path (hereinafter, referred to as an “inflow pipe”) 72 extends from the water receiving section 71 and is connected to the water supply main pipe 1. A three-way solenoid valve 73 is provided in the middle of the inflow pipe 72. A drain pipe (hereinafter, referred to as “drain channel”) 74 extends.
【００２９】更に、水圧駆動定量ポンプ２０から延びる
連通管８２は左右に分岐し、分岐管８２ａの一端が、第
１の原液圧駆動定量ポンプ６０の第１の原液貯留部６５
に連結され、分岐管８２ｂの一端が第２の原液圧駆動定
量ポンプ７０の第２の原液貯留部７５に連結されてい
る。また、給水本管１は、流量計２の下流側で分岐し、
第１の分岐本管１ａには、第１の原液貯留部６５に連通
した第１の原液供給管６６が接続され、第２の分岐本管
１ｂには、第２の原液貯留部７５に連通した第２の原液
供給管７６が接続されている。また、給水本管１におい
て、流量計２の上流側には開閉電磁弁８３が設けられ、
第１及び第２の分岐本管１ａ，１ｂにも開閉電磁弁８
４，８５が設けられている。これらの開閉電磁弁８３〜
８５は、コントローラボックス８６からの制御信号によ
り開閉する構成になっている。このコントローラボック
ス８６は、三方電磁弁４，６３，７３も制御している。Further, a communication pipe 82 extending from the hydraulic drive metering pump 20 branches right and left, and one end of the branch pipe 82a is connected to the first stock solution storage section 65 of the first stock solution pressure drive pump 60.
And one end of the branch pipe 82b is connected to the second stock solution storage section 75 of the second stock solution pressure driven metering pump 70. Further, the water supply main pipe 1 branches on the downstream side of the flow meter 2,
The first branch main pipe 1a is connected to a first raw liquid supply pipe 66 communicating with a first raw liquid storage section 65, and the second branch main pipe 1b is connected to a second raw liquid storage section 75. The second undiluted solution supply pipe 76 is connected. In the water supply main pipe 1, an opening / closing solenoid valve 83 is provided on the upstream side of the flow meter 2,
The first and second branch mains 1a and 1b are also provided with an on-off solenoid valve 8
4,85 are provided. These opening / closing solenoid valves 83 to
Reference numeral 85 is configured to be opened and closed by a control signal from the controller box 86. The controller box 86 also controls the three-way solenoid valves 4, 63, 73.
【００３０】なお、符号６７及び７７は逆止弁である。
また、図４においては、第１及び第２の原液圧駆動定量
ポンプ６０，７０と水圧駆動定量ポンプ２０とは対向し
た関係で配列され、図３においては、第１及び第２の原
液圧駆動定量ポンプ６０，７０と水圧駆動定量ポンプ２
０とは横並びの関係で配列されているが、いずれの図面
も一個の水圧駆動定量ポンプ２０に対して、二個の原液
圧駆動定量ポンプ６０，７０を並列的に配置したもので
あり、思想的に同一である。更には、原液圧駆動定量ポ
ンプの個数を３つ以上にすることもできる。Reference numerals 67 and 77 are check valves.
Also, in FIG. 4, the first and second raw liquid pressure driven metering pumps 60 and 70 and the hydraulic pressure driven metering pump 20 are arranged in a facing relationship, and in FIG. 3, the first and second raw liquid pressure driven pumps 60 and 70 are arranged. Metering pumps 60 and 70 and water pressure driven metering pump 2
Although 0 is arranged in a side-by-side relationship, in each of the drawings, two raw liquid pressure driven pumps 60 and 70 are arranged in parallel with one hydraulic driven pump 20. Are identical. Further, the number of the raw liquid pressure driven metering pumps can be three or more.
【００３１】次に、前述した自動希釈供給装置Ｂの構成
に基づいて、その動作を簡単に説明する。Next, the operation of the automatic dilution and supply device B will be briefly described based on the above-described configuration.
【００３２】先ず、コントローラボックス８６からの制
御信号により、開閉電磁弁８３及び８４を開状態にし、
開閉電磁弁８５を閉状態にする。そして、三方電磁弁７
３を制御して、第２の原液圧駆動定量ポンプ７０が作動
しない状態にしておく。この状態で、水圧駆動定量ポン
プ２０を作動させて定量の原液Ｒを吐出させる。そし
て、第１の原液圧駆動定量ポンプ６０の第１の原液貯留
部６５内に原液Ｒを流入させ、水圧駆動定量ポンプ２０
からの原液Ｒの吐出量と、第１の原液圧駆動定量ポンプ
６０で原液Ｒを貯留する貯留量とに僅かな差額を発生さ
せる。そして、この差額分の原液Ｒを、第１の原液供給
管６６に流し込むことで、分岐本管１ａ内を流れる一定
量の水に対して微量の原液Ｒを希釈供給することができ
る。First, the open / close solenoid valves 83 and 84 are opened according to a control signal from the controller box 86,
The on-off solenoid valve 85 is closed. And the three-way solenoid valve 7
3 is controlled so that the second raw liquid pressure driven metering pump 70 does not operate. In this state, the hydraulic drive metering pump 20 is operated to discharge a fixed amount of the undiluted solution R. Then, the stock solution R is caused to flow into the first stock solution storage section 65 of the first stock solution pressure driven metering pump 60,
A slight difference is generated between the discharge amount of the undiluted solution R from the pump and the amount of the undiluted solution R stored by the first undiluted liquid pressure driven metering pump 60. Then, by flowing the undiluted solution R corresponding to the difference into the first undiluted solution supply pipe 66, it is possible to dilute and supply a small amount of undiluted solution R to a certain amount of water flowing in the branch main pipe 1a.
【００３３】このとき、水圧駆動定量ポンプ２０用の三
方電磁弁４は、水受入れ部２８内に水を取り込むように
動作し、第１の原液圧駆動定量ポンプ６０用の三方電磁
弁６３は、水受入れ部６１から排水管６４を介して水を
排出するように動作する。更に、第１の原液圧駆動定量
ポンプ６０から水圧駆動定量ポンプ２０に原液Ｒを戻す
ときには、三方電磁弁４及び三方電磁弁６３は前述とは
逆の動作をする。At this time, the three-way solenoid valve 4 for the hydraulically driven metering pump 20 operates to take water into the water receiving section 28, and the three-way solenoidal valve 63 for the first raw liquid pressure driven metering pump 60 is It operates to discharge water from the water receiving section 61 through the drain pipe 64. Further, when the stock solution R is returned from the first stock solution pressure driven metering pump 60 to the water pressure driven metering pump 20, the three-way solenoid valve 4 and the three-way solenoid valve 63 operate in the opposite manner as described above.
【００３４】次に、第２の原液圧駆動定量ポンプ７０を
利用する場合、コントローラボックス８６からの制御信
号により、開閉電磁弁８３及び８５を開状態にし、開閉
電磁弁８４を閉状態にする。そして、三方電磁弁６３を
制御して、第１の原液圧駆動定量ポンプ６０の水受入れ
部６１に水を取り込んで水圧をかけ、第１の原液圧駆動
定量ポンプ６０が作動しない状態にしておく。なお、水
圧駆動定量ポンプ２０と第２の原液圧駆動定量ポンプ７
０の動作関係は、前述した水圧駆動定量ポンプ２０と第
１の原液圧駆動定量ポンプ６０の動作関係と同様である
から、その説明は省略する。Next, when the second raw liquid pressure driven metering pump 70 is used, the open / close electromagnetic valves 83 and 85 are opened and the open / close electromagnetic valve 84 is closed according to a control signal from the controller box 86. Then, the three-way solenoid valve 63 is controlled to take water into the water receiving portion 61 of the first raw liquid pressure driven metering pump 60 and apply water pressure, so that the first raw liquid pressure driven metering pump 60 is not operated. . It should be noted that the hydraulic drive metering pump 20 and the second raw liquid pressure drive metering pump 7
The operation relationship of 0 is the same as the above-described operation relationship of the hydraulically driven metering pump 20 and the first hydraulically driven metering pump 60, and thus the description thereof is omitted.
【００３５】［実験例２］自動希釈供給装置Ｂを直径５
０ｍｍ の給水本管１に取り付け、原液受入れ部２７の
吐出予定容積を５ｍｌに設定し、第１の原液貯留部６５
の貯留予定容積を４．９ｍｌに設定し、第２の原液貯留
部７５の貯留予定容積を４．８ｍｌに設定した。ここ
で、給水本管１に水圧２Ｋｇ／ｃｍ2で流量５０リット
ル／分の水を流して、１リットルが流れる都度、流量計
２より信号を受けて水圧駆動定量ポンプ２０を作動させ
た。そして、第１の原液圧駆動定量ポンプ６０を利用し
た場合、分岐本管１ａの下流で希釈水を採取し、化学分
析をした結果、液体肥料Ｒは±５％の誤差で１０，００
０倍の濃度に希釈されていることが確認できた。また、
第２の原液圧駆動定量ポンプ７０を利用した場合、液体
肥料Ｒは５，０００倍の濃度に希釈されていることが確
認できた。[Experimental Example 2] The automatic dilution and supply device B was set to a diameter of 5
0 mm 2, the scheduled discharge volume of the undiluted solution receiving unit 27 is set to 5 ml, and the first undiluted solution storage unit 65 is set.
Was set to 4.9 ml, and the planned storage volume of the second stock solution storage unit 75 was set to 4.8 ml. At this time, water at a flow rate of 50 liters / minute was flowed through the water supply main pipe 1 at a water pressure of 2 kg / cm 2 , and every time 1 liter flowed, a signal was received from the flow meter 2 to operate the hydraulically driven metering pump 20. When the first raw liquid pressure driven metering pump 60 is used, dilution water is collected downstream of the branch main pipe 1a and subjected to chemical analysis. As a result, the liquid fertilizer R has a ± 5% error of 10,000.
It was confirmed that the solution was diluted to a concentration of 0 times. Also,
When the second raw liquid pressure driven metering pump 70 was used, it was confirmed that the liquid fertilizer R was diluted to a concentration of 5,000 times.
【００３６】（第３の実施形態）この実施形態は、水圧
駆動定量ポンプと原液圧駆動定量ポンプとを一体にした
ものである。図５及び図６に示すように、この実施形態
に係る自動希釈供給装置Ｃは、水圧駆動定量ポンプ９０
と原液圧駆動定量ポンプ９１とを横に並べて一体化した
ものであり、それぞれのポンプ９０，９１に三方電磁弁
９２，９３を設けた構成を有している。このような構成
により、自動希釈供給装置Ｃは、その取り扱い性が良く
なり、外観もよく商品価値を高めている。なお、この第
３実施形態は、それぞれのポンプ９０，９１が三方電磁
弁９２，９３をもっており、この点において第２の実施
形態に係る自動希釈供給装置Ｂと共通する。また、水圧
駆動定量ポンプ９０と原液圧駆動定量ポンプ９１とを対
向配列又は直角配列させることもできる。更には、原液
圧駆動定量ポンプ９１の個数を２つ以上にすることもで
きる。(Third Embodiment) In this embodiment, a water pressure driven metering pump and a stock pressure driven metering pump are integrated. As shown in FIGS. 5 and 6, the automatic dilution and supply device C according to this embodiment includes a hydraulically driven metering pump 90.
And a raw liquid pressure driven pump 91 are arranged side by side and integrated, and each pump 90, 91 is provided with a three-way solenoid valve 92, 93. With such a configuration, the automatic dilution and supply device C has good handleability, good appearance, and high commercial value. In the third embodiment, the pumps 90 and 91 have three-way solenoid valves 92 and 93, respectively, and in this respect, are common to the automatic dilution and supply device B according to the second embodiment. In addition, the hydraulic drive metering pump 90 and the stock hydraulic pressure metering pump 91 can be arranged to face each other or at right angles. Further, the number of the raw liquid pressure driven metering pumps 91 may be two or more.
【００３７】本発明は、前述した実施形態に限定されな
いのは言うまでもない。例えば、図２に示した自動希釈
供給装置Ａを、給水本管１に複数個直列に並べること
で、複数種類の殺菌剤、農薬、液体肥料を給水本管１内
で希釈混合することができる。また、図３に示した自動
希釈供給装置Ｂにおいて、分岐本管１ａと１ｂとを下流
側で一本に合流させることもできる。このような構成
は、原液同士を混合することが好ましくない場合に特に
有効である。また、従来技術で挙げられている自動希釈
供給装置と第１実施形態で挙げられている自動希釈供給
装置Ａとを給水本管１に直列又は並列に並べることもで
きる。更には、自動希釈供給装置の三方電磁弁や開閉電
磁弁の開閉をタイマーにより管理することもできる。な
お、第１〜第３の実施形態の自動希釈供給装置Ａ〜Ｃで
は、配管が露出しているが、この配管を自動希釈供給装
置内に一体形成した場合には、通路となる。Needless to say, the present invention is not limited to the above-described embodiment. For example, by arranging a plurality of automatic dilution supply devices A shown in FIG. 2 in series on the water supply main pipe 1, a plurality of types of disinfectants, pesticides, and liquid fertilizers can be diluted and mixed in the water supply main pipe 1. . Further, in the automatic dilution supply device B shown in FIG. 3, the branch main pipes 1a and 1b can be merged into one at the downstream side. Such a configuration is particularly effective when it is not preferable to mix stock solutions. In addition, the automatic dilution supply device described in the related art and the automatic dilution supply device A described in the first embodiment can be arranged in series or in parallel with the water supply main pipe 1. Further, the opening and closing of the three-way solenoid valve and the on-off solenoid valve of the automatic dilution supply device can be managed by a timer. In the automatic dilution and supply devices A to C of the first to third embodiments, the pipes are exposed. However, when the pipes are integrally formed in the automatic dilution and supply apparatuses, they serve as passages.
【００３８】[0038]
【発明の効果】本発明において、農業に利用される原液
の自動希釈供給装置は、以上のように構成されているた
め、次のような効果を得る。すなわち、この装置に利用
するポンプ機構は、給水本管から流入する水の圧力で駆
動する水圧駆動定量ポンプと、水圧駆動定量ポンプから
吐出する原液の圧力で駆動する原液圧駆動定量ポンプと
からなり、水圧駆動定量ポンプの原液受入れ部と原液圧
駆動定量ポンプの原液貯留部とを連通路を介して連結さ
せ、水圧駆動定量ポンプから吐出する原液の吐出量に対
して、原液圧駆動定量ポンプの貯留量が小さくなるよう
に調整し、水圧駆動定量ポンプからの原液の吐出量と原
液圧駆動定量ポンプで原液を貯留する貯留量との差額
を、給水本管に連通した原液供給路に流し込む構成にす
ることで、微量の原液でも設定通りの希釈倍率を得るこ
とができる。According to the present invention, the automatic diluting and supplying apparatus for undiluted solution used for agriculture is configured as described above, and thus the following effects are obtained. That is, the pump mechanism used in this device is composed of a hydraulically driven metering pump driven by the pressure of the water flowing from the water supply main pipe, and a stock solution pressure driven metering pump driven by the pressure of the stock solution discharged from the hydraulically driven metering pump. Connecting the stock solution receiving portion of the hydraulic drive metering pump and the stock solution storage portion of the stock pressure drive metering pump via a communication path, and controlling the amount of the stock solution discharged from the hydraulic drive metering pump to the A configuration in which the storage amount is adjusted to be small, and the difference between the discharge amount of the stock solution from the hydraulically driven metering pump and the storage amount for storing the stock solution by the stock pressure driven metering pump is fed into the stock solution supply passage communicating with the water supply main pipe. By doing so, the dilution ratio as set can be obtained even with a small amount of the stock solution.
【図１】本発明に係る原液の自動希釈供給装置の第１実
施形態を示す斜視図である。FIG. 1 is a perspective view showing a first embodiment of an apparatus for automatically diluting and supplying a stock solution according to the present invention.
【図２】図１に示した自動希釈供給装置の要部の断面図
である。FIG. 2 is a sectional view of a main part of the automatic dilution and supply device shown in FIG.
【図３】本発明に係る原液の自動希釈供給装置の第２実
施形態を示す斜視図である。FIG. 3 is a perspective view showing a second embodiment of an automatic diluting and supplying apparatus for a stock solution according to the present invention.
【図４】図３に示した自動希釈供給装置の要部であるポ
ンプ機構を示す断面図である。FIG. 4 is a cross-sectional view showing a pump mechanism which is a main part of the automatic dilution supply device shown in FIG.
【図５】本発明に係る原液の自動希釈供給装置の第３実
施形態を示す斜視図である。FIG. 5 is a perspective view showing a third embodiment of an automatic dilution and supply device for a stock solution according to the present invention.
【図６】図５に示した自動希釈供給装置の要部であるポ
ンプ機構を示す正面図である。FIG. 6 is a front view showing a pump mechanism which is a main part of the automatic dilution supply device shown in FIG.
【図７】従来の自動希釈供給装置を示す斜視図である。FIG. 7 is a perspective view showing a conventional automatic dilution supply device.
【図８】図７に示した自動希釈供給装置のポンプ機構を
示す断面図である。FIG. 8 is a sectional view showing a pump mechanism of the automatic dilution supply device shown in FIG. 7;
Ａ〜Ｃ…自動希釈供給装置、Ｐ…ポンプ機構、Ｒ…原
液、１…給水本管、２…流量計、３…第１の流入管（流
入路）、４，６３，７３，９２，９３…三方電磁弁（三
方弁）、５…第２の流入管（流入路）、８…液体肥料、
２０，９０…水圧駆動定量ポンプ、２１…主動ピストン
部、２５，２６…隔膜、２７…原液受入れ部、２８，６
１，７１…水受入れ部、２９，４９…バネ部材、３１…
主動側の移動距離調整手段、３９…連通管（連通路）、
４０，６０，７０，９１…原液圧駆動定量ポンプ、４１
…従動ピストン部、４５，４６…隔膜、４７…原液貯留
部、５１…従動側の移動距離調整手段、５３…原液供給
管（原液供給路）、５５…空気抜き弁、６２，７２…流
入管（流入路）、８０…原液容器。A to C: automatic dilution supply device, P: pump mechanism, R: undiluted solution, 1: water supply main pipe, 2: flow meter, 3: first inflow pipe (inflow path), 4, 63, 73, 92, 93 ... three-way solenoid valve (three-way valve), 5 ... second inflow pipe (inflow path), 8 ... liquid fertilizer,
20, 90: hydraulic drive metering pump, 21: driven piston, 25, 26: diaphragm, 27: undiluted solution receiving part, 28, 6
1, 71: water receiving portion, 29, 49: spring member, 31 ...
Moving distance adjusting means on the driving side, 39 ... communication pipe (communication passage),
40, 60, 70, 91 ... stock pressure driven metering pump, 41
... driven piston parts, 45, 46 ... diaphragm, 47 ... stock solution storage part, 51 ... driven side moving distance adjusting means, 53 ... stock solution supply pipe (stock solution supply path), 55 ... air vent valve, 62, 72 ... inflow pipe ( (Inflow channel), 80 ... stock solution container.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 赤松 達雄 神奈川県横浜市栄区田谷町１番地 住友電 気工業株式会社横浜製作所内 (72)発明者 菅野 栄一 東京都大田区東蒲田一丁目13番５号 株式 会社ゼット工業内 (72)発明者 菅野 均 東京都大田区東蒲田一丁目13番５号 株式 会社ゼット工業内 (72)発明者 末松 優 東京都台東区浅草橋四丁目２番２号 太洋 興業株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuo Akamatsu 1 Tayacho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture Sumitomo Electric Industries, Ltd. Yokohama Works (72) Inventor Eiichi Sugano 1-13-5 Higashikamata, Ota-ku, Tokyo No. Zetsu Kogyo Co., Ltd. (72) Inventor Hitoshi Sugano 1-13-5 Higashikamata, Ota-ku, Tokyo Tokyo, Japan Incorporated Zet Kogyo Co., Ltd. (72) Yu Suematsu 4-2-2 Asakusabashi, Taito-ku, Tokyo Taiyo Kogyo Co., Ltd.
Claims (3)
と、前記流量計の検出信号によって開閉する三方弁と、
この三方弁の開閉によって駆動するポンプ機構と、前記
ポンプ機構に原液を供給する原液容器と、前記給水本管
から分岐し、前記三方弁を経由して前記ポンプ機構に接
続された流入路とを備え、前記ポンプ機構から吐出する
所定量の原液を前記給水本管内に流入させて、前記給水
本管内を流れる所定量の水で前記所定量の前記原液を希
釈する自動希釈装置において、 前記ポンプ機構は、前記給水本管から流入する水の圧力
で駆動する水圧駆動定量ポンプと、前記水圧駆動定量ポ
ンプから吐出する前記原液の圧力で駆動する原液圧駆動
定量ポンプとからなり、 前記水圧駆動定量ポンプは、 前記流入路からの水圧に応動すると共に前後に隔膜をも
った主動ピストン部と、 前記主動ピストン部の後方に位置して、前記主動ピスト
ン部の移動距離を規制する主動側の移動距離調整手段
と、 前記主動ピストン部の前方に位置し、前記原液容器から
の前記原液を受け入れる原液受入れ部と、 前記主動ピストン部の後方に位置し、前記流入路からの
水を受け入れる水受入れ部と、 前記主動ピストン部を前記主動側の移動距離調整手段に
向けて付勢するバネ部材とを有し、 前記原液圧駆動定量ポンプは、 前記原液受入れ部から吐出した前記原液の圧力に応動す
ると共に前後に隔膜をもった従動ピストン部と、 前記従動ピストン部の後方に位置して、前記従動ピスト
ン部の移動距離を規制する従動側の移動距離調整手段
と、 前記従動ピストン部の前方に位置し、前記水圧駆動定量
ポンプから吐出する前記原液を貯留する原液貯留部と、 前記従動ピストン部を前記従動側の移動距離調整手段に
向けて付勢するバネ部材とを有し、 前記水圧駆動定量ポンプの前記原液受入れ部と前記原液
圧駆動定量ポンプの前記原液貯留部とを連通路を介して
連結させ、前記水圧駆動定量ポンプから吐出する前記原
液の吐出量に対して、前記原液圧駆動定量ポンプの貯留
量が小さくなるように調整し、前記水圧駆動定量ポンプ
からの前記原液の吐出量と前記原液圧駆動定量ポンプで
前記原液を貯留する貯留量との差額を、前記給水本管に
連通した原液供給路に流し込むことを特徴とする農業に
利用される原液の自動希釈供給装置。1. A flow meter for detecting a flow rate passing through a water supply main pipe, a three-way valve that opens and closes according to a detection signal of the flow meter,
A pump mechanism driven by the opening and closing of the three-way valve, a stock solution container for supplying a stock solution to the pump mechanism, and an inflow passage branched from the water supply main pipe and connected to the pump mechanism via the three-way valve. An automatic diluting device that comprises: a predetermined amount of undiluted solution discharged from the pump mechanism flowing into the water supply main pipe, and diluting the predetermined amount of the undiluted solution with a predetermined amount of water flowing through the water supply main pipe; Comprises a hydraulically driven metering pump driven by the pressure of the water flowing from the water supply main pipe, and a raw liquid pressure driven metering pump driven by the pressure of the stock solution discharged from the hydraulically driven metering pump. Is driven by the water pressure from the inflow path and has a diaphragm in front and rear, a driving piston portion, located behind the driving piston portion, the moving distance of the driving piston portion A moving-distance adjusting means on the driving side to regulate; a raw liquid receiving section positioned in front of the driving piston section to receive the raw liquid from the raw liquid container; and a raw liquid receiving section positioned behind the driving piston section, from the inflow passage. A water receiving portion that receives water, and a spring member that urges the driving piston portion toward the moving distance adjusting means on the driving side, wherein the raw liquid pressure driven metering pump discharges the raw liquid from the raw liquid receiving portion. A driven piston portion responsive to the pressure of the undiluted solution and having a diaphragm in front and back; a driven-side moving distance adjusting means positioned behind the driven piston portion to regulate a moving distance of the driven piston portion; An undiluted solution storage unit that is located in front of the piston unit and stores the undiluted solution discharged from the hydraulic drive metering pump; and moves the driven piston unit toward the driven-side moving distance adjusting unit. A spring member that urges and discharges the undiluted solution from the hydraulically driven metering pump. With respect to the discharge amount of the undiluted solution to be adjusted, the storage amount of the undiluted liquid pressure driven metering pump is adjusted so as to be small, and the undiluted solution from the hydraulically driven fixed amount pump and the undiluted solution are discharged by the undiluted pressure driven metering pump. An automatic diluent supply apparatus for agriculture, wherein a difference from a storage amount to be stored is poured into a concentrate supply path communicating with the water supply main pipe.
動定量ポンプを並列に配置したことを特徴とする請求項
１記載の農業に利用される原液の自動希釈供給装置。2. The apparatus for automatically diluting and supplying a stock solution used in agriculture according to claim 1, wherein a plurality of the stock solution pressure driven metering pumps selectively driven are arranged in parallel.
動定量ポンプとを内部にもった一体型の前記ポンプ機構
を備えたことを特徴とする請求項１又は２記載の農業に
利用される原液の自動希釈供給装置。3. The undiluted solution used in agriculture according to claim 1 or 2, comprising the integrated pump mechanism having the hydraulically driven metered pump and the undiluted hydraulically driven metered pump therein. Automatic dilution feeding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34203796A JP4326600B2 (en) | 1996-12-20 | 1996-12-20 | Automatic dilution supply equipment for stock solutions used in agriculture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34203796A JP4326600B2 (en) | 1996-12-20 | 1996-12-20 | Automatic dilution supply equipment for stock solutions used in agriculture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10180077A true JPH10180077A (en) | 1998-07-07 |
| JP4326600B2 JP4326600B2 (en) | 2009-09-09 |
Family
ID=18350680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34203796A Expired - Lifetime JP4326600B2 (en) | 1996-12-20 | 1996-12-20 | Automatic dilution supply equipment for stock solutions used in agriculture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4326600B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008023423A (en) * | 2006-07-19 | 2008-02-07 | Hiroshima Univ | Mixed liquid feeding device and its control method |
-
1996
- 1996-12-20 JP JP34203796A patent/JP4326600B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008023423A (en) * | 2006-07-19 | 2008-02-07 | Hiroshima Univ | Mixed liquid feeding device and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4326600B2 (en) | 2009-09-09 |
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