JPS6129721A - Flowmeter - Google Patents

Flowmeter

Info

Publication number
JPS6129721A
JPS6129721A JP15067484A JP15067484A JPS6129721A JP S6129721 A JPS6129721 A JP S6129721A JP 15067484 A JP15067484 A JP 15067484A JP 15067484 A JP15067484 A JP 15067484A JP S6129721 A JPS6129721 A JP S6129721A
Authority
JP
Japan
Prior art keywords
cam plate
cam
rotating shaft
axis
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15067484A
Other languages
Japanese (ja)
Inventor
Motoki Tokuyasu
徳安　基希
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokico Ltd
Original Assignee
Tokico Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokico Ltd filed Critical Tokico Ltd
Priority to JP15067484A priority Critical patent/JPS6129721A/en
Publication of JPS6129721A publication Critical patent/JPS6129721A/en
Pending legal-status Critical Current

Links

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
    • G01F3/14—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 reciprocating pistons, e.g. reciprocating in a rotating body

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To facilitate assembling a flowmeter and to measure with high precision by fitting a rotating cam and axis of rotation passing through the cam together by forming a projection and recess mutually in a piston type flowmeter which rotates the axis of rotation by the reciprocating motion of the piston. CONSTITUTION:A fluid is poured from an inlet 1 and flowed into a cylinder chamber 10. Then, the pistons 4, 5 are pressed to the left side to rotate the cam 7 via a roller 6. Then, the axis of rotation 8 is passed through the cam 7 and fixed, and its rotating speed is detected by a converter 16 to measure the flow rate. Further, a switching device 15 is provided to a lower part of the axis of rotation 8 and the pistons 4, 5 are reciprocated by changing the fluid flow. In this case, a hole 26 is bored on the cam 7 eccentrically and the axis of rotation 8 is passed through it and the projecting part 28 and recess 29 are formed to the plate of the cam 7 and the axis of rotation 8 respectively to fit and fix the projecting part 28 and recess 29 together. Accordingly, the cam and axis of rotation are easily assembled at right angles mutually without using a surplus part and the measurement precision is improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は各種の給油ライン等に取り付けられて計量機
として用いられるピストン型の流量計に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a piston-type flowmeter that is attached to various oil supply lines and used as a measuring device.

〔従来技術とその問題点〕[Prior art and its problems]

１に４図は従来の上記ピストン型の流量計を示す　、も
のである。この流量計は流体の流入口ｌおよび流出口２
の設けられた本体３内に一対に連結されたピストン４，
５が２組、互いに直交する向ｔｋＫ往復動自在に設けら
れておシ、これらピストン４゜５の対向する面側には各
々クーラ６．６が回転自在に取シ付けられている。これ
らローラ６・・・の外周面は各々これらローラ６・・・
間に設けられた円板状のカム板７の外周部に当接してお
〕、さらに上記カム板７は上記本体３の中心部に回転自
在に保持された回転軸８忙偏心カム状に固定されている
。Figures 1 and 4 show the conventional piston-type flowmeter described above. This flowmeter has a fluid inlet l and an outlet 2.
A pair of pistons 4 connected within the main body 3 provided with
Two sets of pistons 5 are provided so as to be able to reciprocate in directions tkK perpendicular to each other, and coolers 6 and 6 are rotatably attached to the opposing surfaces of these pistons 4 and 5, respectively. The outer peripheral surfaces of these rollers 6...
Furthermore, the cam plate 7 is fixed in the shape of an eccentric cam to a rotating shaft 8 rotatably held in the center of the main body 3. has been done.

これにより上記ピストン４，５、及び回転軸８＃′ｉ、
ピストン４，５が水平方向へ往復運動すると回転軸８が
、ローラ６・・・に押圧されて偏心カムとして回転する
カム板７により回転運動をする構造とされている。As a result, the pistons 4, 5 and the rotating shaft 8#'i,
When the pistons 4 and 5 reciprocate in the horizontal direction, the rotating shaft 8 is rotated by a cam plate 7 that is pressed by rollers 6 and rotates as an eccentric cam.

また上記本体３には、上記ピストン４，５の外方に形成
されたシリンダ室９．ＩＯＫ連通する流路１１，１２と
、上記流入口１および流出口２に各々連通する流路１３
，１４とが形成されている。The main body 3 also includes a cylinder chamber 9 formed outside the pistons 4 and 5. Channels 11 and 12 that communicate with IOK, and channels 13 that communicate with the inlet 1 and outlet 2, respectively.
, 14 are formed.

ざらに上記回転軸８の下端部忙は、上記流路１１゜１２
と流路１３，１４との間に形成される流路を切換える為
の切換弁１５が固定されている。Roughly speaking, the lower end of the rotating shaft 8 is shaped like the flow path 11°12.
A switching valve 15 for switching the flow path formed between the flow path and the flow paths 13 and 14 is fixed.

以上により、上記流入口１から本体３内に導びかれた流
体が図中矢印で示すように流路１３，１２を経てシリン
ダ室１０内に流入してピストン５を図中左方へ押圧し、
ピストン４，５ヲ移動させると上記ピストン４側のシリ
ンダ室９内の流体は、ピストン４，５の移動に伴って流
路１１から切換弁１５を経て流路１４へ流れ、流出口２
から流出する。そして上記ピストン４，５の移ｆｉｂに
より回転！ＩＩＩ　８が回転し、よってその下端部の切
換弁１５も回転軸と一体的に回転することにより、流路
１３と流路１１とが、また流路１２と流路１４とが連通
ずる。このだめ上記流体はシリンダ室９からピストン４
を図中右方へ押圧し上記とは逆にピストン４，５ｔ−図
中右方へ移動させる。そして連続的に流入する流体によ
り上記作動が繰り返されることにより、回転軸８は流体
の流量に比例した速度の回転運動を行ない、この回転軸
８の上端部に連結された変換器１６等によりバルス信号
に変換されて流量表示計に伝達されるような構造とされ
ているＯ ここで上記ピストン４，５の往復運動を回転運動に変換
する上記カム板７と回転軸８とは第５図および第６図和
水すような構造とされている。As a result of the above, the fluid led into the main body 3 from the inlet 1 flows into the cylinder chamber 10 through the flow paths 13 and 12 as shown by the arrow in the figure, and presses the piston 5 to the left in the figure. ,
When the pistons 4 and 5 are moved, the fluid in the cylinder chamber 9 on the piston 4 side flows from the flow path 11 through the switching valve 15 to the flow path 14, and flows into the flow path 14 through the outlet port 2.
flows out from. Then, the pistons 4 and 5 rotate due to the movement fib! III 8 rotates, and accordingly, the switching valve 15 at its lower end also rotates integrally with the rotating shaft, so that the flow path 13 and the flow path 11 and the flow path 12 and the flow path 14 are brought into communication. This fluid flows from the cylinder chamber 9 to the piston 4.
to the right in the figure, and move the pistons 4, 5t to the right in the figure, contrary to the above. By repeating the above operation with the continuously flowing fluid, the rotating shaft 8 performs a rotational movement at a speed proportional to the flow rate of the fluid, and the converter 16 etc. connected to the upper end of the rotating shaft 8 generates a pulse. The cam plate 7 and the rotating shaft 8, which convert the reciprocating motion of the pistons 4 and 5 into rotary motion, are shown in FIG. It has a structure similar to that shown in Figure 6.

第５図および第６図において円板状のカム板７には偏心
した位置忙貫通孔１７が穿設されている。In FIGS. 5 and 6, the disc-shaped cam plate 7 is provided with an eccentric through-hole 17. As shown in FIGS.

この貫通孔１７は上記回転軸８の直径より大径忙形成さ
れたもので、この貫通孔１７にボス１８が嵌入されてい
る。This through hole 17 has a diameter larger than that of the rotating shaft 8, and a boss 18 is fitted into this through hole 17.

このボス１８は上記カム板７の貫通孔１７の内径と等し
い外径を有する円柱状の嵌入部１９と、この嵌入部１９
よりやや大径な円柱状の固定部２０とが同軸で一体に成
形されてなるものである。上記ボス１８は上記カム板７
の貫通孔１７内にその嵌入部１９が嵌入されるとともに
その固定部２０上面の外周部からカム板７の内部に向け
て打ち込まれたピン２１．２１により上記カム板７に固
定されている。また上記ボス１８の中心部には上記回転
軸８の外径と同径の孔部２２が穿設されており、この孔
部２２内に上記回転軸８が挿入されている。そしてこれ
らボス１８と回転軸８とは、上記ボス１８の固定部２０
外周部から互いの直径方向に向けて、上記ボス１８と回
転軸８とを一体的に貫通して穿設された貫通孔２３内に
テーバピン２４が打ち込まれることにより固定されてい
る。This boss 18 has a cylindrical fitting part 19 having an outer diameter equal to the inner diameter of the through hole 17 of the cam plate 7, and a cylindrical fitting part 19.
A cylindrical fixing part 20 having a slightly larger diameter is formed coaxially and integrally with the fixing part 20. The boss 18 is the cam plate 7
The fitting part 19 is fitted into the through hole 17 of the cam plate 7, and the fixing part 20 is fixed to the cam plate 7 by pins 21 and 21 driven into the cam plate 7 from the outer periphery of the upper surface thereof. Further, a hole 22 having the same diameter as the outer diameter of the rotary shaft 8 is bored in the center of the boss 18, and the rotary shaft 8 is inserted into the hole 22. These bosses 18 and rotating shaft 8 are connected to a fixed portion 20 of the boss 18.
A taper pin 24 is driven into a through hole 23 formed integrally through the boss 18 and the rotary shaft 8 from the outer periphery in the diametrical direction of each other.

ところでこのようなピストン型の流量計では、流体の流
量変化に対するピストン４，５の応答性が良い為、比較
的広い範囲に亘る流ｔを測定することができるという利
点がある。Incidentally, such a piston-type flowmeter has the advantage of being able to measure the flow t over a relatively wide range because the pistons 4 and 5 have good responsiveness to changes in the fluid flow rate.

しかしながら上記従来の流量計では、回転軸８とカム板
７とをボス１８を介して固定しているため上述したよう
に部品数が多いという欠点があった。しかも上記回転軸
８とカム板７とを組立てる際に、これと並行して上記ピ
ン２１．２１打込み用の穴や、上記テーバピン２４打込
み用の貫通孔２３を穿設する必要があるため手間を要す
る欠点があった。さらに上記ボス１８の嵌入部１９外周
と孔部２２内周との間の平行度および垂直度を共に高い
精度で得ることが難しく、よってカム板７と回転軸との
間の直角塵が得難いという問題があった。このため回転
軸８が回転する際にカム板７の外周部が上下方向に振れ
ることにより、ピストン４，５０ストロークの全てが回
転軸８０回転に変換されないことにより発生する計測誤
差の一因となっていた。However, in the conventional flowmeter described above, since the rotating shaft 8 and the cam plate 7 are fixed via the boss 18, there is a drawback that the number of parts is large as described above. Moreover, when assembling the rotating shaft 8 and the cam plate 7, it is necessary to simultaneously drill holes for driving the pins 21 and 21 and through holes 23 for driving the taper pins 24, which saves time and effort. There were some drawbacks. Furthermore, it is difficult to obtain both parallelism and perpendicularity between the outer periphery of the fitting part 19 of the boss 18 and the inner periphery of the hole 22 with high precision, and therefore it is difficult to obtain a right angle between the cam plate 7 and the rotating shaft. There was a problem. Therefore, when the rotating shaft 8 rotates, the outer circumference of the cam plate 7 vibrates in the vertical direction, which contributes to measurement errors caused by not converting all of the 50 strokes of the piston 4 to 80 revolutions of the rotating shaft. was.

〔発明の目的〕[Purpose of the invention]

この発明は上記事情に鑑みてなされたもので、回転軸と
カム板との固定が容易でしかも計測精度に優れる流量計
を提供することを目的とするものである。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a flowmeter that allows easy fixation of a rotating shaft and a cam plate and has excellent measurement accuracy.

〔実施例〕〔Example〕

＠１図ないし第３図はこの発明の流量計の一例を示すも
ので第４図ないし第６図に示したも′のと共通する部分
には同一符号を付゛してその説明を簡略化する。@Figures 1 to 3 show an example of the flowmeter of the present invention, and parts common to those shown in Figures 4 to 6 are given the same reference numerals to simplify the explanation. do.

第１図ないしｆｎ３図においてこの流１千計ではカム板
２５の所定の偏心位置に￥を通孔２６が穿設されている
。この貫通孔２６Ｊ／−ｉ内径が、このカム板２５が固
定これる回転軸２７の外径と等しくされたもので、プら
にその内周面には内方に向けて角柱状に突出してなるキ
ー状の凸部２８が形成されている。他方上記回転軸２７
の外周部には上記カム板２５の固定される位置から上端
部までの間に上記カム板２５の貫通孔２６に形成された
凸部２８と嵌合する四部２９が形成されている。−そ、
して上記カム板２５Ｖｉ貫通孔２６内に上記回転軸２７
が互いの凹部２９および凸部２８を係合させて挿入され
、上記回転軸２７の所定位置忙取り付けられている。そ
してさらに上記カム板２５は凸部２８の先端部がポンチ
３０により上記回転軸２７の凹部２９内壁面に向けて押
出されることＫより、第３図に示すように凸部２８およ
び凹部２９間の僅かな隙間が埋められ、上記回転軸２７
外周面に密着して固定されている。In FIGS. 1 to 3, a through hole 26 is bored at a predetermined eccentric position of the cam plate 25 in this 1,000-flow meter. The inner diameter of the through hole 26J/-i is made equal to the outer diameter of the rotating shaft 27 to which the cam plate 25 is fixed, and the inner circumferential surface of the through hole 26J/-i is made to have a prismatic shape that protrudes inward. A key-shaped protrusion 28 is formed. On the other hand, the rotating shaft 27
Four parts 29 are formed on the outer periphery of the cam plate 25 from the position where the cam plate 25 is fixed to the upper end thereof to fit into a convex part 28 formed in the through hole 26 of the cam plate 25. -So,
Then, the rotating shaft 27 is inserted into the through hole 26 of the cam plate 25Vi.
are inserted by engaging each other's concave portions 29 and convex portions 28, and are attached to the rotation shaft 27 at a predetermined position. Further, since the tip of the convex part 28 of the cam plate 25 is pushed out by the punch 30 toward the inner wall surface of the concave part 29 of the rotating shaft 27, the cam plate 25 is formed between the convex part 28 and the concave part 29 as shown in FIG. The slight gap is filled, and the rotating shaft 27
It is fixed in close contact with the outer circumferential surface.

しかしてこのような流量計によればカム板２５と回転軸
２７とに互いに係合する凹凸部２８．２９を形成し、上
記回転＠２７を直接上記カム板２５に挿入している為、
他にボスやビン等の介在部品を必要としない。しかも上
記回転軸２７とカム板２５とをポンチ３０による衝撃押
出により密着固定している為、組立てが極めて容易であ
る。さら忙上記カム板２５の凸部２８の先端部をポンチ
３０で押出す際に回転軸２８の外周面は上記凹凸部２８
．２９の反対側に向けて押圧され、貫通孔２６の内周面
と密着する為、これら回転軸２７とカム板２５との間の
直角度が得易すく、よって計測精度を向上させることが
できる。However, according to such a flowmeter, the cam plate 25 and the rotating shaft 27 are formed with concave and convex portions 28 and 29 that engage with each other, and the rotation @27 is directly inserted into the cam plate 25.
No other intervening parts such as bosses or bottles are required. Moreover, since the rotating shaft 27 and the cam plate 25 are closely fixed by impact extrusion using the punch 30, assembly is extremely easy. When the tip of the convex portion 28 of the cam plate 25 is pushed out with the punch 30, the outer peripheral surface of the rotating shaft 28 is pressed against the concave and convex portion 28.
．． 29 and comes into close contact with the inner circumferential surface of the through hole 26, it is easy to obtain a perpendicularity between the rotating shaft 27 and the cam plate 25, thereby improving measurement accuracy. .

なお上記実施例においては、カム板２５側に凸部２８を
、また回転軸２７側圧四部２９を設けであるがこれに限
らず、逆にカム板に凹部を、また回転軸に凸部を形成し
て−よい。また上記凹凸部の数も一個所に限るものでは
なく、スプライン状あるいはローレット状に設けてもよ
い。In the above embodiment, the convex portion 28 is provided on the cam plate 25 side, and the four side pressure portions 29 are provided on the rotating shaft 27, but the present invention is not limited to this. Conversely, a concave portion may be formed on the cam plate, and a convex portion may be formed on the rotating shaft. It's okay. Further, the number of the uneven portions is not limited to one place, but may be provided in a spline shape or a knurling shape.

〔発明の効果〕〔Effect of the invention〕

以上説明したようにこの発明の流−ｉ計ｕピストンＸの
往復運動を回転運動に変換するカム板と、このカム板が
固定される回転軸とに互いに嵌合する凹凸部を形成し、
上記回転軸を上記カム板に上記凹凸部を係合させて挿入
するとともに上記凹凸部を衝撃押出で互いに密着させて
同足したものである。よってこの流量針によればカム板
と回転軸との組立に余分な介在部品を必要とせず、経済
的であるとともに組立も容易である。また上記カム板と
回転軸との間の直角度が、上記凹凸部の面のみで決定さ
れる為高い精度の直角が得易すく１．さらに上記カム板
と回転軸の結合にボス等を必要としない為従来のものと
比較して＠量なものとなりその応答性に優れ、よって計
測精度の向上が計られる等の利点を得ることができる。As explained above, the cam plate that converts the reciprocating motion of the flow-i meter u piston X of the present invention into rotational motion and the rotating shaft to which this cam plate is fixed are formed with concave and convex portions that fit together,
The rotating shaft is inserted into the cam plate by engaging the concave and convex portions, and the concave and convex portions are brought into close contact with each other by impact extrusion. Therefore, this flow rate needle does not require any extra intervening parts to assemble the cam plate and the rotating shaft, making it economical and easy to assemble. In addition, since the perpendicularity between the cam plate and the rotating shaft is determined only by the surface of the uneven portion, it is easy to obtain a highly accurate perpendicularity.1. Furthermore, since no boss is required to connect the cam plate and the rotating shaft, the cam plate is smaller than the conventional one, and its responsiveness is excellent, resulting in improved measurement accuracy. can.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ないし第３図はこの発明の流量計の一実施例を示
すもので、第１図はカム板と回転軸との要部を断面視し
た正面図、第２図は同平面図、第３図は第１図のＡ部詳
細図、第４図ないし第６図は従来の流量計を示すもので
、第４図は断面視した正面図、第５図はカム板と回転軸
との要部を断面視した正面図、第６図は同平面図である
。 ４．５・・・・・・ピストン、７・・・・・・カム板、
８・・・・・・回転軸、２５・・・・・・カム板、２６
・・・・・・貫通孔、２７・・・・・・回転軸、２８・
・・・・・凸部、２９・・・・・・凹部、３０・・・・
・・ポンチ。 第１図 第２図 第４図 第５図 第６図1 to 3 show an embodiment of the flowmeter of the present invention, in which FIG. 1 is a front view in cross section of the main parts of the cam plate and the rotating shaft, and FIG. 2 is a plan view of the same. Figure 3 is a detailed view of part A in Figure 1, Figures 4 to 6 show conventional flowmeters, Figure 4 is a front view in cross section, and Figure 5 shows the cam plate and rotating shaft. FIG. 6 is a front view showing a cross-sectional view of a main part thereof, and FIG. 6 is a plan view thereof. 4.5...Piston, 7...Cam plate,
8...Rotating shaft, 25...Cam plate, 26
...Through hole, 27...Rotation shaft, 28.
...Convex part, 29...Concave part, 30...
...Ponchi. Figure 1 Figure 2 Figure 4 Figure 5 Figure 6

Claims (1)

【特許請求の範囲】 本体内にこの本体内を通過する流体により往復動自在に
設けられたピストンと、このピストンの往復運動を回転
運動に変換する円板状のカム板と、このカム板の偏心位
置にこのカム板の板面に対して垂直に挿着されるととも
に上記本体に回転自在に保持された回転軸を具備するピ
ストン型の流量計において、 上記カム板と上記回転軸とに互いに嵌合する凹凸部を形
成し、上記回転軸を上記カム板に上記凹凸部を係合させ
て挿入するとともに上記凹凸部を衝撃押出で互いに密着
させて固定したことを特徴とする流量計。[Scope of Claims] A piston provided in a main body so as to be able to reciprocate with fluid passing through the main body, a disc-shaped cam plate that converts the reciprocating motion of the piston into a rotational motion, and a cam plate of the cam plate. In a piston-type flowmeter, the cam plate and the rotating shaft are mutually connected to each other in a piston-type flowmeter having a rotating shaft that is inserted perpendicularly to the plate surface of the cam plate at an eccentric position and is rotatably held in the main body. A flowmeter characterized in that a fitting uneven part is formed, the rotating shaft is inserted into the cam plate by engaging the uneven part, and the uneven parts are brought into close contact with each other by impact extrusion and fixed.
JP15067484A 1984-07-20 1984-07-20 Flowmeter Pending JPS6129721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15067484A JPS6129721A (en) 1984-07-20 1984-07-20 Flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15067484A JPS6129721A (en) 1984-07-20 1984-07-20 Flowmeter

Publications (1)

Publication Number Publication Date
JPS6129721A true JPS6129721A (en) 1986-02-10

Family

ID=15501991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15067484A Pending JPS6129721A (en) 1984-07-20 1984-07-20 Flowmeter

Country Status (1)

Country Link
JP (1) JPS6129721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62228116A (en) * 1986-03-28 1987-10-07 Tokyo Tatsuno Co Ltd Piston type flowmeter
EP1178055A2 (en) 2000-06-22 2002-02-06 JSR Corporation Method for recovering a polymer from solution

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62228116A (en) * 1986-03-28 1987-10-07 Tokyo Tatsuno Co Ltd Piston type flowmeter
JPH0643912B2 (en) * 1986-03-28 1994-06-08 株式会社タツノ・メカトロニクス Assembling method of piston in piston type flow meter
EP1178055A2 (en) 2000-06-22 2002-02-06 JSR Corporation Method for recovering a polymer from solution

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