JPS6342729B2 - - Google Patents
Info
- Publication number
- JPS6342729B2 JPS6342729B2 JP57009737A JP973782A JPS6342729B2 JP S6342729 B2 JPS6342729 B2 JP S6342729B2 JP 57009737 A JP57009737 A JP 57009737A JP 973782 A JP973782 A JP 973782A JP S6342729 B2 JPS6342729 B2 JP S6342729B2
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- casing
- measuring chamber
- rotor
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 29
- 239000000696 magnetic material Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 8
- 238000000465 moulding Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 229910001234 light alloy Inorganic materials 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
- G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
- G01F3/04—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls
- G01F3/06—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising members rotating in a fluid-tight or substantially fluid-tight manner in a housing
- G01F3/10—Geared or lobed impeller meters
Description
【発明の詳細な説明】
この発明は、組立簡易で比較的低廉なしかも高
精度な流量計に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flowmeter that is easy to assemble, relatively inexpensive, and highly accurate.
一般に、この種の流量計は、比較的流量の小さ
い例えば自動車などの燃料計測用とか、化学流体
の微量な計測供給用などに広く用いられているの
で、可成りの高精度を要求され、殊に回転子を回
転自在に収容した筐体の加工精度、気密性などに
ついて厳格な精度を必要とする。 In general, this type of flowmeter is widely used for measuring fuel in automobiles, etc., where the flow rate is relatively small, or for measuring and supplying trace amounts of chemical fluids, so it requires fairly high accuracy and requires special Strict precision is required in terms of processing accuracy and airtightness of the casing that rotatably houses the rotor.
ところで、従来のこの種の流量計には、例えば
第１図に示すような本出願人が先に提案した実公
昭56−38434号公報の考案が知られている。図面
について説明すれば、一対の回転子１，１を軸
２，２により回転自在に収納した片側の筐体３に
対し該筐体３の開口面３ａには、他側の筐体４が
当接され両筐体３，４をアルミニウムなどの軽合
金による精密鋳造で高精度に加工仕上げられて、
気密な計量室５が形成されると共にこの計量室５
内で前記一対の回転子１，１が円滑に回転作動で
きる構成となつている。 By the way, as a conventional flow meter of this type, there is known a device as shown in FIG. 1, which was proposed earlier by the present applicant in Japanese Utility Model Publication No. 56-38434. To explain the drawings, a housing 3 on one side houses a pair of rotors 1, 1 rotatably around shafts 2, 2, and a housing 4 on the other side is in contact with an opening surface 3a of the housing 3. The two casings 3 and 4 that are in contact with each other are precision cast using light alloy such as aluminum and finished with high precision.
An airtight measuring chamber 5 is formed, and this measuring chamber 5
The pair of rotors 1, 1 is configured to rotate smoothly within the rotor.
また、前記回転子１には、磁石６が埋設され、
この磁石６と対応する他側の筐体４にリードスイ
ツチのような磁気感応素子７を取付け、回転子１
の回転数を電気パルス信号として取り出せる構成
となつている。 Further, a magnet 6 is embedded in the rotor 1,
A magnetically sensitive element 7 such as a reed switch is attached to the housing 4 on the other side corresponding to the magnet 6, and the rotor 1
The structure is such that the rotational speed of the motor can be extracted as an electrical pulse signal.
なお、筐体３，４を鋳造加工あるいは合成樹脂
材料によるモールド成形によつても製造してもよ
い。 Incidentally, the casings 3 and 4 may also be manufactured by casting or molding using a synthetic resin material.
ところで、上述の公知例では、二つの筐体３，
４を各別に精密加工仕上げしなければならないた
め、製作コストの逓増は免れ得ない問題点があつ
た。 By the way, in the above-mentioned known example, the two casings 3,
4 had to be precision-machined and finished individually, resulting in an unavoidable increase in manufacturing costs.
この発明の第一の目的とする処は、叙上の点に
着目して成されたもので、高精度の品質を保持し
て廉価量産に適する流量計を提供するにあり、具
体的には計量室を形成できる第１の筐体は、これ
をアルミニウムなどの軽合金の冷間たんぞう、あ
るいは合成樹脂材料によるモールド成形などによ
つて製造して内部組織を緻密にし、かつ強靭に形
成すると共に該第１の筐体に隣設される第２の筐
体はこれを合成樹脂その他のモールド加工あるい
は軽合金の冷間たんぞうによつて安価に量産し、
かつ回転子の回転数を検知できるセンサを含む検
知計数機構を、前記モールド加工と同時にまたは
加工後に一対的に組込んで形成し、さらに両筐体
の中間に隔板を介して重ね合せて一対的に固着す
るようにしたことを特徴とする流量計の提供にあ
る。 The first objective of this invention is to provide a flowmeter that maintains high precision quality and is suitable for low-cost mass production. The first casing that can form the measuring chamber is manufactured by cold forming a light alloy such as aluminum or by molding a synthetic resin material to make the internal structure dense and strong. At the same time, the second casing adjacent to the first casing is mass-produced at low cost by molding a synthetic resin or other material or by cold-forming a light alloy.
A detection and counting mechanism including a sensor capable of detecting the rotation speed of the rotor is formed by incorporating a pair of them at the same time as the molding process or after the molding process, and a pair of detection and counting mechanisms are formed by overlapping the two housings with a partition plate interposed between them. To provide a flowmeter characterized in that the flowmeter is fixed in place.
また、この発明の第２の目的とする処は、第１
図に示す従来例にあつては、計量室５に通ずる第
１の筐体３に穿つた流体流入口８および流体流出
口９にはそれぞれ流体流入管１０および流体流出
管１１を取付けてあるが、いずれも止片１３およ
びねじ１４などを用いて固着しているので、構造
が複雑となり取付けに手間を要し能率的な作業が
できないという不都合があつたので、これを既製
の管体を用い、単に打込加工によつて直接または
間接に筐体に取付けられるようにした流量計を提
供することにある。 Moreover, the second object of this invention is the first
In the conventional example shown in the figure, a fluid inlet pipe 10 and a fluid outlet pipe 11 are attached to a fluid inlet 8 and a fluid outlet 9, respectively, which are bored in the first casing 3 leading to the measuring chamber 5. , all of them are fixed using retaining pieces 13 and screws 14, etc., so the structure is complicated and installation is labor-intensive, making it impossible to work efficiently. Another object of the present invention is to provide a flowmeter that can be attached directly or indirectly to a housing simply by hammering.
なお、この発明にあつて、被計測流体の流量表
示機能は筐体本体に設ける場合は勿論のこと別体
の表示器により遠隔表示する場合がある。 In the present invention, the flow rate display function of the fluid to be measured may not only be provided in the main body of the casing, but also may be remotely displayed using a separate display device.
以下に、この発明の二実施例を図面と共に説明
する。なお、第１図の従来例と同一構成は同一符
号で表わし、その説明の詳細は省く。 Two embodiments of the invention will be described below with reference to the drawings. Note that the same components as those of the conventional example shown in FIG. 1 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.
１５はアルミニウムなどの軽合金で冷間たんぞ
う、あるいは合成樹脂材料によるモールド成形な
どにより製造された第１の筐体で、一対の回転子
１，１を軸２，２により回転自在に軸承させた計
量室５を備える。１６は前記第１の筐体に較べて
厚さの薄い非磁性材料で加工された隔板、１７は
該隔板１６に接続される第２の筐体で、主として
合成樹脂材料のモールド加工または金属材料の冷
間たんぞうなどによつて得ることができる。 Reference numeral 15 denotes a first casing made of a light alloy such as aluminum by cold processing or molding of a synthetic resin material, in which a pair of rotors 1, 1 are rotatably supported by shafts 2, 2. A measuring chamber 5 is provided. Reference numeral 16 indicates a partition plate made of a non-magnetic material that is thinner than the first case, and reference numeral 17 indicates a second case connected to the partition plate 16, which is mainly molded or made of synthetic resin material. It can be obtained by cold processing of metal materials.
該第２の筐体１７には凹処１８を形成し検知計
数機構１９が簡単に組込める構成を備える。とこ
ろで、検知計数機構１９は、リードスイツチまた
はホール素子のような磁気感応素子２０と該磁気
感応素子２０を電気的に接続するための端子板２
１とにより構成され、外形に適つた凹処１８に単
に嵌合するだけで簡単に組込める構成としてい
る。そして、磁気感応素子２０が隔板１６を介し
て回転子１に埋設した磁石６と磁気作用が受けら
れる位置関係を備えることができるようになつて
いる。なお、端子板２１には、第２の筐体１７外
へ導出されるリード線２２を接続してある。 A recess 18 is formed in the second casing 17 so that a detection and counting mechanism 19 can be easily incorporated therein. By the way, the detection and counting mechanism 19 includes a magnetically sensitive element 20 such as a reed switch or a Hall element, and a terminal plate 2 for electrically connecting the magnetically sensitive element 20.
1, and can be easily assembled by simply fitting into a recess 18 suitable for the external shape. The magnetically sensitive element 20 can be positioned in a positional relationship with the magnet 6 embedded in the rotor 1 via the partition plate 16 so that it can receive a magnetic effect. Note that a lead wire 22 led out from the second casing 17 is connected to the terminal board 21 .
２３，２４は流体流入管および流体流出管で、
第１の筐体１５の計量室５に通ずる流体流入口２
５、流体流出口２６に打込加工で直接にまたは添
板２７を介して固着された。 23 and 24 are a fluid inflow pipe and a fluid outflow pipe;
Fluid inlet 2 communicating with metering chamber 5 of first housing 15
5. It was fixed to the fluid outlet 26 either directly by hammering or via a splicing plate 27.
第３図および第４図に示す実施例では、第１の
筐体１５の側壁１５ａに直接流体流入管２３、流
体流出管２５が打込まれているので、側壁１５ａ
はその肉厚l1、を比較的厚くした方が精度確保に
好ましいが、第６図に示す実施例では添板２７を
添設しているので第１の筐体１５と一体の側壁部
１５ｂはそれ程肉厚l2を厚くする必要はない。た
だし、添板２７の添接のためパツキンとしてＯリ
ング２８が必要不可欠となる。 In the embodiment shown in FIGS. 3 and 4, the fluid inflow pipe 23 and the fluid outflow pipe 25 are directly driven into the side wall 15a of the first housing 15, so the side wall 15a
Although it is preferable to make the wall thickness l 1 relatively thick in order to ensure accuracy, in the embodiment shown in FIG. There is no need to make the wall thickness l 2 that thick. However, in order to attach the splice plate 27, an O-ring 28 is indispensable as a seal.
なお図において符号２９は止めビス、３０は該
ビス２９の挿通孔、３１はＯリングを示す。 In the figure, reference numeral 29 indicates a set screw, 30 indicates an insertion hole for the screw 29, and 31 indicates an O-ring.
叙上の構成に基づいて作用を述べる。 The effect will be described based on the above structure.
被計測流体は、流体流入管２３より計量室５に
入り、一対の回転子１，１を回転させて他方の流
体流出管２５より吐出される。 The fluid to be measured enters the measuring chamber 5 through the fluid inflow pipe 23, rotates the pair of rotors 1, and is discharged from the other fluid outflow pipe 25.
回転子１，１の回転は、その回転子１に埋設し
た磁石６が隔板１６を介して磁気感応素子２０を
働かせるので、正確に磁気電気的に検出された検
知計数機構１９が働いて回転子１，１の回転数が
計数され、図示しない表示器により流量値を表示
できるものである。 The rotation of the rotors 1, 1 is caused by the magnet 6 embedded in the rotor 1 acting on the magnetically sensitive element 20 via the partition plate 16, and the detection and counting mechanism 19 which is accurately magnetoelectrically detected. The number of revolutions of the children 1, 1 is counted, and the flow rate value can be displayed on a display (not shown).
この発明によれば、精度を要求される計量室を
形成できる第１の筐体および第２の筐体は、アル
ミニウムなどの軽合金材料の冷間たんぞうあるい
は合成樹脂材料によるモールド成形によつて緻密
にしかも強靭に形成でき、しかも隔板の隣設によ
つて回転子が回転する計量室を所望の高精度を保
持して形成できると共に、流量計本体の流体流入
口、流体流出口の加工方向が計量室に対して同じ
なので、加工し易い。また、流体流入管、流体流
出管等の取り付け方向も前記流体流入口、流体流
出口に対して、同じなので、組み立て易い。従つ
て、能率的な生産が廉価に可能である。検知計数
機構を備える第２の筐体は、回転子に埋設した磁
石に対し検知計数機構の磁気感応素子が磁気作用
を適正に受けることができる位置に単に対応させ
るだけで良く、必要以上に精度を要しないので、
比較的簡単にモールド成形により量産でき、著る
しく生産コストを逓減できる。 According to this invention, the first casing and the second casing, which can form a measuring chamber that requires precision, are formed by cold forming a light alloy material such as aluminum or by molding a synthetic resin material. The metering chamber, in which the rotor rotates, can be formed to be dense and strong, and by placing the partition plate next to it, the measuring chamber in which the rotor rotates can be formed while maintaining the desired high precision. Since the direction is the same with respect to the measuring chamber, it is easy to process. Furthermore, since the mounting directions of the fluid inflow pipe, fluid outflow pipe, etc. are the same with respect to the fluid inlet and fluid outlet, assembly is easy. Therefore, efficient production is possible at low cost. The second housing equipped with the detection and counting mechanism simply needs to be placed in a position where the magnetically sensitive element of the detection and counting mechanism can appropriately receive the magnetic action with respect to the magnet embedded in the rotor. Since it does not require
It can be mass-produced relatively easily by molding, and production costs can be significantly reduced.
また、隔板も既製の非磁性材金属板を所望の形
状に裁断するだけで簡単に供給できるのでコスト
ダウンにつながる。 Furthermore, the partition plate can be easily supplied by simply cutting a ready-made non-magnetic metal plate into a desired shape, leading to cost reduction.
第１図は従来例の流量計の一部切欠側面図、第
２図は同上−線断面図、第３図はこの発明に
係る流量計の一実施例を示す一部切欠側面図、第
４図は同上−線平面図、第５図は蓋板の平面
図、第６図は他例を示す一部切欠側面図である。
１，１……回転子、３，４……筐体、５……計
量室、６……磁石、１０……流体流入管、１１…
…流体流出管、１５……第１の筐体、１６……隔
板、１７……第２の筐体、１９……センサ２０を
有する検知計数機構、２３……流体流入管、２４
……流体流出管、２７……添板。
FIG. 1 is a partially cutaway side view of a conventional flowmeter, FIG. 2 is a cross-sectional view taken along the same line as above, FIG. 3 is a partially cutaway side view showing an embodiment of the flowmeter according to the present invention, and FIG. 5 is a plan view of the cover plate, and FIG. 6 is a partially cutaway side view showing another example. 1, 1... Rotor, 3, 4... Housing, 5... Measuring chamber, 6... Magnet, 10... Fluid inflow pipe, 11...
...Fluid outflow pipe, 15...First casing, 16...Partition plate, 17...Second casing, 19...Detection and counting mechanism having sensor 20, 23...Fluid inflow pipe, 24
...Fluid outflow pipe, 27...Plate.
Claims (1)
する計量室を穿設し、該計量室に通じる流体流入
口および流体流出口を第１の筐体の平面に対して
直角に穿設し、前記流体流入口および流体流出口
にその長さ方向と一致して流体流入管および流体
流出管を固着し、前記第１の筐体に較べて厚さの
薄い非磁性材料で加工された板を計量室に被せた
ことを特徴とする流量計。1 A measuring chamber that rotatably supports a pair of rotors is bored in the first casing, and a fluid inlet and a fluid outlet leading to the measuring chamber are bored perpendicular to the plane of the first casing. a fluid inflow pipe and a fluid outflow pipe are fixed to the fluid inlet and the fluid outflow port along the length thereof, and are made of a non-magnetic material having a thickness thinner than that of the first casing. A flow meter characterized by having a measuring chamber covered with a flat plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP973782A JPS58127125A (en) | 1982-01-25 | 1982-01-25 | Flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP973782A JPS58127125A (en) | 1982-01-25 | 1982-01-25 | Flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58127125A JPS58127125A (en) | 1983-07-28 |
| JPS6342729B2 true JPS6342729B2 (en) | 1988-08-25 |
Family
ID=11728618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP973782A Granted JPS58127125A (en) | 1982-01-25 | 1982-01-25 | Flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58127125A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3321952C2 (en) * | 1983-06-18 | 1985-08-22 | Bopp & Reuther Gmbh, 6800 Mannheim | Electromagnetic pickup for flow meters |
| JPH0323534Y2 (en) * | 1985-09-20 | 1991-05-22 | ||
| US8166828B2 (en) * | 2010-08-06 | 2012-05-01 | Ecolab USA, Inc. | Fluid flow meter |
| DE102012216817A1 (en) * | 2012-09-19 | 2014-03-20 | Nordson Corporation | Metering device for a fluid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316928U (en) * | 1976-07-26 | 1978-02-13 |
-
1982
- 1982-01-25 JP JP973782A patent/JPS58127125A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316928U (en) * | 1976-07-26 | 1978-02-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58127125A (en) | 1983-07-28 |
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