JP2014010122A - Liquid flowmeter - Google Patents

Liquid flowmeter Download PDF

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JP2014010122A
JP2014010122A JP2012148943A JP2012148943A JP2014010122A JP 2014010122 A JP2014010122 A JP 2014010122A JP 2012148943 A JP2012148943 A JP 2012148943A JP 2012148943 A JP2012148943 A JP 2012148943A JP 2014010122 A JP2014010122 A JP 2014010122A
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upstream chamber
float
liquid
flow rate
permanent magnet
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JP5944248B2 (en
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Hideaki Yumoto
秀昭 湯本
Yoshiaki Nishikawa
嘉晃 西川
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TLV Co Ltd
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TLV Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a liquid flowmeter capable of surely measuring a flow rate.SOLUTION: A liquid flowmeter comprises: a casing 1 having an inlet, an upstream chamber, and an outlet; a shuttering board for separating the upstream chamber from the outlet; a shuttering hole 7 made to be open on the shuttering board; a float 9 arranged in the upstream chamber; a case 10 projected outward from the upstream chamber and fixed; a rotation board 12 rotatably mounted around a central axis 11 of the case 10; a float arm 13 whose one end is fixed to the rotation board 12 and whose other end is fixed to the float 9 that rotates according to floating and sinking of the float 9 to make the rotation board 12 rotate; a movable shaft 15 connected to the rotation board 12 and displaced in an axis center direction of the case 10 in accordance with the rotation of the rotation board 12; a permanent magnet 16 housed in the movable shaft 15; a magnetic sensor 17 for detecting a liquid level in the upstream chamber on the basis of a change in distance to and from the permanent magnet 16 according to a displacement of the permanent magnet 16; and a flow rate calculator 18 for calculating a liquid flow rate on the basis of a relation between a liquid level in the upstream chamber and an amount passing through the shuttering hole 7.

Description

本発明は、水、油、薬液等の液体の流量を測定する液体用流量計に関し、特に、セキ孔の上流の液位とセキ孔の通過量との関係から液体の流量を測定する液体用流量計に関する。 The present invention relates to a flow meter for liquid that measures the flow rate of liquid such as water, oil, and chemical liquid, and in particular, for a liquid that measures the flow rate of a liquid from the relationship between the liquid level upstream of the throat hole and the passage amount of the throat hole. It relates to a flow meter.

従来の液体用流量計は、例えば特許文献１に開示されている。これは、入口と上流室と下流室と出口を有するケーシングと、上流室と下流室を仕切るセキ板と、セキ板に開けられたセキ孔と、上流室に配されたフロートと、上流室から外部に突出して固定されたケースと、フロートと磁気結合してケースの軸心方向に変位する可動軸と、可動軸に連動する摺動接点と抵抗体に接続された固定接点とから成るポテンショ・メータと、上流室の液位とセキ孔の通過量との関係から液体の流量を算出する流量算出器とを具備するものである。 A conventional liquid flow meter is disclosed in Patent Document 1, for example. This consists of a casing having an inlet, an upstream chamber, a downstream chamber, and an outlet, a plate separating the upstream chamber and the downstream chamber, a hole formed in the plate, a float arranged in the upstream chamber, and an upstream chamber. A potentiometer consisting of a case protruding and fixed to the outside, a movable shaft that is magnetically coupled to the float and displaced in the axial direction of the case, a sliding contact that is linked to the movable shaft, and a fixed contact that is connected to a resistor The meter includes a meter and a flow rate calculator that calculates the flow rate of the liquid from the relationship between the liquid level in the upstream chamber and the passage amount of the cough hole.

特開昭６１−４５９２４号公報JP 61-45924

上記従来の液体用流量計は、摺動接点と固定接点との接触不良が生じるために流量を測定できなくなる問題点があった。 The conventional liquid flowmeter has a problem in that the flow rate cannot be measured due to poor contact between the sliding contact and the fixed contact.

したがって本発明が解決しようとする課題は、確実に流量を測定できる液体用流量計を提供することである。 Therefore, the problem to be solved by the present invention is to provide a liquid flow meter capable of reliably measuring the flow rate.

上記の課題を解決するために、本発明の液体用流量計は、入口と上流室と出口を有するケーシングと、上流室と出口を仕切るセキ板と、セキ板に開けられたセキ孔と、上流室に配されたフロートと、上流室から外部に突出して固定されたケースと、ケースの中心軸の回りに回転自在に取付けられた回転板と、一端が回転板に固定され他端がフロートに固定されフロートの浮上降下により回転して回転板を回転せしめるフロートアームと、回転板に連結され回転板の回転に伴ってケースの軸心方向に変位する可動軸と、可動軸に内蔵された永久磁石と、永久磁石の変位に応じた永久磁石との距離変化に基づき上流室の液位を検出する磁気センサと、上流室の液位とセキ孔の通過量との関係から液体の流量を算出する流量算出器とを具備するものである。 In order to solve the above-described problems, a liquid flowmeter of the present invention includes a casing having an inlet, an upstream chamber, and an outlet, a separator plate that partitions the upstream chamber and the outlet, a separator hole opened in the separator plate, and an upstream A float arranged in the chamber, a case protruding from the upstream chamber and fixed thereto, a rotating plate rotatably attached around the central axis of the case, one end fixed to the rotating plate and the other end to the float A float arm that is fixed and rotated by the float fall of the float to rotate the rotating plate, a movable shaft connected to the rotating plate and displaced in the axial direction of the case as the rotating plate rotates, and a permanent built in the movable shaft Calculates the liquid flow rate from the relationship between the magnetic level of the upstream chamber based on the change in the distance between the magnet and the permanent magnet according to the displacement of the permanent magnet, and the relationship between the liquid level in the upstream chamber and the amount of passage through the throat hole. Comprising a flow rate calculator A.

本発明によれば、磁気センサにより上流室の液位を検出するので、確実に流量を測定できるという優れた効果を奏する。 According to the present invention, since the liquid level in the upstream chamber is detected by the magnetic sensor, there is an excellent effect that the flow rate can be reliably measured.

本発明の実施の形態に係わる液体用流量計の断面図である。It is sectional drawing of the flowmeter for liquid concerning embodiment of this invention. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG.

以下、本発明の実施の形態について、図１乃至図２を参照して説明する。ケーシング１は入口２とほぼ円柱状の空間から成る上流室３と出口４を有し、図示しない入口側配管フランジと出口側配管フランジの間に配されボルトとナットから成る締結手段によって挟持される。入口２と上流室３を円板状の整流板５により仕切る。整流板５には複数の小孔から成る整流孔が開けられている。整流孔により入口２と上流室３を連通する。上流室３と出口４を円板状のセキ板６により仕切る。セキ板６にはセキ孔７とセキ孔７の上端から連通する通孔８が開けられている。セキ孔７と通孔８により上流室３と出口４を連通する。セキ孔７の上流の上流室３に中空球形のフロート９を配置する。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. The casing 1 has an inlet 2 and an upstream chamber 3 formed of a substantially cylindrical space, and an outlet 4. The casing 1 is disposed between an inlet side piping flange and an outlet side piping flange (not shown) and is sandwiched by fastening means including bolts and nuts. . The inlet 2 and the upstream chamber 3 are partitioned by a disc-shaped rectifying plate 5. The rectifying plate 5 has a rectifying hole made up of a plurality of small holes. The inlet 2 and the upstream chamber 3 are communicated with each other through the rectifying hole. The upstream chamber 3 and the outlet 4 are partitioned by a disk-shaped squeeze plate 6. The texture plate 6 is provided with a texture hole 7 and a through hole 8 communicating from the upper end of the texture hole 7. The upstream chamber 3 and the outlet 4 are communicated with each other through the crevice hole 7 and the through hole 8. A hollow sphere-shaped float 9 is disposed in the upstream chamber 3 upstream of the cough 7.

ケーシング１にねじ結合によりケース１０を固定する。ケース１０の内端二又部分１０ａに中心軸１１により回転板１２を回転自在に取付ける。回転板１２にフロートアーム１３の一端を圧入により固定し、フロートアーム１３の他端をフロート９に溶接により固定する。フロートアーム１３はフロート９の浮上降下により回転して回転板１２を回転せしめる。回転板１２に可動軸１５の一端二又部分１５ａを連結軸１４により連結する。可動軸１５は回転板１２の回転に伴ってケース１０の軸心方向に変位する。可動軸１５の他端に永久磁石１６を内蔵する。ケース１０の隔壁１０ｂにより永久磁石１６とは隔てて永久磁石１６の変位に応じた永久磁石１６との距離変化に基づき上流室３の液位を検出する磁気センサ１７をケース１０に取付ける。磁気センサ１７を流量算出器１８に接続する。流量算出器１８は上流室３の液位とセキ孔７の通過量との関係を予め記憶しており、上流室３の液位から液体の流量を算出する。 The case 10 is fixed to the casing 1 by screw connection. A rotating plate 12 is rotatably attached to the inner end bifurcated portion 10 a of the case 10 by a central shaft 11. One end of the float arm 13 is fixed to the rotating plate 12 by press fitting, and the other end of the float arm 13 is fixed to the float 9 by welding. The float arm 13 rotates as the float 9 moves up and down to rotate the rotating plate 12. One end bifurcated portion 15 a of the movable shaft 15 is connected to the rotating plate 12 by a connecting shaft 14. The movable shaft 15 is displaced in the axial direction of the case 10 as the rotating plate 12 rotates. A permanent magnet 16 is built in the other end of the movable shaft 15. A magnetic sensor 17 that detects the liquid level in the upstream chamber 3 based on a change in distance from the permanent magnet 16 according to the displacement of the permanent magnet 16 is attached to the case 10, separated from the permanent magnet 16 by the partition wall 10 b of the case 10. The magnetic sensor 17 is connected to the flow rate calculator 18. The flow rate calculator 18 stores in advance the relationship between the liquid level in the upstream chamber 3 and the amount of passage through the cough 7, and calculates the liquid flow rate from the liquid level in the upstream chamber 3.

入口２の液体は整流孔を通して上流室３に入り、セキ孔７を通して出口４に流出する。上流室３の液位に伴ってフロート９が浮上降下し、フロート９の浮上降下によりフロートアーム１３が回転して回転板１２が中心軸１１の回りに回転する。回転板１２の回転に伴って可動軸１５がケースの軸心方向に変位して永久磁石１６の磁気センサ１７との距離が変化する。磁気センサ１７が永久磁石１６との距離変化に基づき上流室３の液位を検出し、流量算出器１８が上流室３の液位とセキ孔７の通過量との関係から液体の流量を算出する。 The liquid at the inlet 2 enters the upstream chamber 3 through the rectifying hole and flows out to the outlet 4 through the throat hole 7. The float 9 rises and falls with the liquid level in the upstream chamber 3, and the float arm 13 rotates due to the float and fall of the float 9, and the rotating plate 12 rotates around the central axis 11. As the rotating plate 12 rotates, the movable shaft 15 is displaced in the axial direction of the case, and the distance between the permanent magnet 16 and the magnetic sensor 17 changes. The magnetic sensor 17 detects the liquid level in the upstream chamber 3 based on the change in the distance from the permanent magnet 16, and the flow rate calculator 18 calculates the liquid flow rate from the relationship between the liquid level in the upstream chamber 3 and the passage amount of the throat hole 7. To do.

本発明は、水、油、薬液等の液体の流量を測定する液体用流量計に利用することができる。 INDUSTRIAL APPLICABILITY The present invention can be used for a liquid flow meter that measures the flow rate of liquids such as water, oil, and chemicals.

１ ケーシング
２ 入口
３ 上流室
４ 出口
５ 整流板
６ セキ板
７ セキ孔
８ 通孔
９ フロート
１０ ケース
１１ 中心軸
１２ 回転板
１３ フロートアーム
１４ 連結軸
１５ 可動軸
１６ 永久磁石
１７ 磁気センサ
１８ 流量算出器 DESCRIPTION OF SYMBOLS 1 Casing 2 Inlet 3 Upstream chamber 4 Outlet 5 Rectification plate 6 Clear plate 7 Clear hole 8 Through hole 9 Float 10 Case 11 Center shaft 12 Rotating plate 13 Float arm 14 Connecting shaft 15 Movable shaft 16 Permanent magnet 17 Magnetic sensor 18 Flow rate calculator

Claims (1)

入口と上流室と出口を有するケーシングと、上流室と出口を仕切るセキ板と、セキ板に開けられたセキ孔と、上流室に配されたフロートと、上流室から外部に突出して固定されたケースと、ケースの中心軸の回りに回転自在に取付けられた回転板と、一端が回転板に固定され他端がフロートに固定されフロートの浮上降下により回転して回転板を回転せしめるフロートアームと、回転板に連結され回転板の回転に伴ってケースの軸心方向に変位する可動軸と、可動軸に内蔵された永久磁石と、永久磁石の変位に応じた永久磁石との距離変化に基づき上流室の液位を検出する磁気センサと、上流室の液位とセキ孔の通過量との関係から液体の流量を算出する流量算出器とを具備することを特徴とする液体用流量計。 A casing having an inlet, an upstream chamber and an outlet, a plate separating the upstream chamber and the outlet, a hole formed in the plate, a float arranged in the upstream chamber, and protruding from the upstream chamber to be fixed to the outside. A case, a rotating plate rotatably attached around the central axis of the case, a float arm that has one end fixed to the rotating plate and the other end fixed to the float, and rotates by rotating the float to lower the rotating plate Based on the change in the distance between the movable shaft connected to the rotating plate and displaced in the axial direction of the case as the rotating plate rotates, the permanent magnet built in the moving shaft, and the permanent magnet according to the displacement of the permanent magnet A liquid flowmeter comprising: a magnetic sensor that detects a liquid level in an upstream chamber; and a flow rate calculator that calculates a flow rate of the liquid from a relationship between the liquid level in the upstream chamber and the passage amount of the throat hole.
JP2012148943A 2012-07-02 2012-07-02 Liquid flow meter Active JP5944248B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117451118A (en) * 2023-12-18 2024-01-26 山东思科生物科技有限公司 Flow detection device and method for fish protein suspension fertilizer production

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50139760A (en) * 1974-04-24 1975-11-08
JPS5890406U (en) * 1981-12-09 1983-06-18 株式会社西原環境衛生研究所 Constant flow regulator
JPS6031621U (en) * 1983-08-09 1985-03-04 東京計装株式会社 area flow meter
JPS6054920U (en) * 1983-09-21 1985-04-17 株式会社　テイエルブイ drain flow meter
JPS60239623A (en) * 1984-05-14 1985-11-28 Ikeda Keiki Seisakusho:Kk Flow measurement of water duct and measuring apparatus thereof
JPS6145924A (en) * 1984-08-09 1986-03-06 Tlv Co Ltd Flow meter for fluid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50139760A (en) * 1974-04-24 1975-11-08
JPS5890406U (en) * 1981-12-09 1983-06-18 株式会社西原環境衛生研究所 Constant flow regulator
JPS6031621U (en) * 1983-08-09 1985-03-04 東京計装株式会社 area flow meter
JPS6054920U (en) * 1983-09-21 1985-04-17 株式会社　テイエルブイ drain flow meter
JPS60239623A (en) * 1984-05-14 1985-11-28 Ikeda Keiki Seisakusho:Kk Flow measurement of water duct and measuring apparatus thereof
JPS6145924A (en) * 1984-08-09 1986-03-06 Tlv Co Ltd Flow meter for fluid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117451118A (en) * 2023-12-18 2024-01-26 山东思科生物科技有限公司 Flow detection device and method for fish protein suspension fertilizer production
CN117451118B (en) * 2023-12-18 2024-03-05 山东思科生物科技有限公司 Flow detection device and method for fish protein suspension fertilizer production

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