JPH0219695Y2 - - Google Patents
Info
- Publication number
- JPH0219695Y2 JPH0219695Y2 JP1985026815U JP2681585U JPH0219695Y2 JP H0219695 Y2 JPH0219695 Y2 JP H0219695Y2 JP 1985026815 U JP1985026815 U JP 1985026815U JP 2681585 U JP2681585 U JP 2681585U JP H0219695 Y2 JPH0219695 Y2 JP H0219695Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- lubricating oil
- rotor
- pressure
- oil filling
- 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
- 239000010687 lubricating oil Substances 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 229920002449 FKM Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Details Of Flowmeters (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、化学活性の強い流体とかスラリ等を
容積型流量計で計量する場合、軸受部にこれらの
計量液が混入して早期摩耗することのないように
した軸受潤滑装置に関する。[Detailed description of the invention] Industrial application field This invention is designed to prevent premature wear due to the mixing of these measuring liquids into the bearing when measuring highly chemically active fluids, slurries, etc. using a positive displacement flowmeter. This invention relates to a bearing lubrication device that eliminates the need for bearing lubrication.
従来の技術
本出願人は、先に、計量液が回転子軸受に混入
することにより該回転子軸受が早期に摩耗するこ
とのないよう回転子軸受部に潤滑油を強制的に送
入する潤滑装置、すなわち、容積型流量計本体の
軸受部にシール部を介して潤滑油充填室を設け、
該潤滑油充填室に充填される潤滑油に対して容積
型流量計の流入側圧力損失を背圧として作用させ
て強性潤滑する容積型流量計の軸受潤滑装置につ
いて提案した（実公昭54−5635号公報）。Prior Art The present applicant first proposed a method for forcibly supplying lubricating oil to the rotor bearing in order to prevent premature wear of the rotor bearing due to the mixing of metering fluid into the rotor bearing. A lubricating oil filling chamber is provided in the bearing part of the device, that is, the positive displacement flowmeter body through a seal part,
We proposed a bearing lubrication device for positive displacement flowmeters that strongly lubricates the lubricating oil filled in the lubricating oil filling chamber by applying the pressure loss on the inflow side of the positive displacement flowmeter as back pressure. Publication No. 5635).
第２図は、本出願人が先に提案した容積型流量
計の軸受潤滑装置の一例を示す断面図で、図中、
１は計量室、２は潤滑油充填室、３は回転子軸、
４は回転子、５は端面板、６は軸受ホルダー、７
は軸受、８はシール溝、９はキヤツプシールで、
耐摩耗性とシール効果とを考慮してキヤツプシー
ル９が配設してある。 FIG. 2 is a cross-sectional view showing an example of a bearing lubrication device for a positive displacement flowmeter previously proposed by the applicant.
1 is a measuring chamber, 2 is a lubricating oil filling chamber, 3 is a rotor shaft,
4 is a rotor, 5 is an end plate, 6 is a bearing holder, 7
is the bearing, 8 is the seal groove, 9 is the cap seal,
A cap seal 9 is provided in consideration of wear resistance and sealing effect.
第２図において、計量室１に導入される計量液
は回転子４の回転に比例して排出されるが回転子
軸３は潤滑油充填室２と計量室１とを区画する端
面板５に軸受ホルダー６を介して圧入された軸受
７で支承されている。キヤツプシール９は端面板
５の、回転子４と軸受ホルダー６の間に穿穴され
たシール溝８に挿入され、軸受ホルダー６により
押圧固定されている。キヤツプシール９は市販さ
れているもので耐蝕、耐摩耗特性の優れたテフロ
ンで構成され、断面“コ”の字型のリング状キヤ
ツプ１０と、このリング状キヤツプ１０の“コ”
の字内に密に内挿されるバイトン等の“Ｏ”リン
グ１１とからなつており、シールはシール溝８と
“Ｏ”リング１１とによつてなされ、キヤツプ１
０と回転子軸３とは滑動している。 In FIG. 2, the metering liquid introduced into the metering chamber 1 is discharged in proportion to the rotation of the rotor 4, but the rotor shaft 3 is connected to the end plate 5 that partitions the lubricating oil filling chamber 2 and the metering chamber 1. It is supported by a bearing 7 that is press-fitted through a bearing holder 6. The cap seal 9 is inserted into a seal groove 8 formed in the end plate 5 between the rotor 4 and the bearing holder 6, and is pressed and fixed by the bearing holder 6. The cap seal 9 is commercially available and is made of Teflon, which has excellent corrosion and abrasion resistance properties.
It consists of an "O" ring 11 made of Viton or the like which is tightly inserted into the shape of the cap.The seal is made by the seal groove 8 and the "O" ring 11,
0 and the rotor shaft 3 are sliding.
本考案が解決しようとする問題点
叙上の従来技術においては、キヤツプシール９
を押圧固定する場合、基準に従つた量のつぶれ代
を与えておいても、長期的には“Ｏ”リング１１
の膨潤により体積が増大するのでキヤツプ１０が
回転子軸に押圧されて摺動抵抗が増す。この結
果、流量計の精度が劣化するだけでなく、摩耗速
度が増大し、シール材としての長期使用ができ
ず、保守時間が短くなり、保守時期を逸した場
合、計量液が軸受部に侵入して損傷する等の不都
合があつた。上記従来技術においては、キヤツプ
シール９が正常でも、流量がない場合、計量液と
潤滑油との圧力差がなく、配管内で圧力変動があ
る場合、圧力伝達おくれの結果として計量液の圧
力が大きくなると、上記のキヤツプシールではシ
ール作用が失われることがある。Problems to be solved by the present invention In the prior art described above, the cap seal 9
When fixing by pressing, even if you give a crushing amount according to the standard, in the long term, the "O" ring 11
As the volume increases due to swelling, the cap 10 is pressed against the rotor shaft, increasing sliding resistance. As a result, not only does the accuracy of the flowmeter deteriorate, but the rate of wear increases, making it impossible to use it as a seal material for a long period of time, shortening maintenance time, and if maintenance is missed, the metering fluid will enter the bearing. This caused some inconveniences, such as damage. In the above conventional technology, even if the cap seal 9 is normal, if there is no flow, if there is no pressure difference between the measured fluid and the lubricating oil, and if there is pressure fluctuation in the piping, the pressure of the measured fluid will increase as a result of a delay in pressure transmission. If the size increases, the cap seal described above may lose its sealing effect.
問題点を解決するための手段
本考案は、上述のごとき従来技術の欠点を解決
するためになされたもので、特に、潤滑油充填室
の潤滑油に対して流量計の流入側圧力損失を背圧
として作用させることにより軸受部に強制潤滑を
与えるが、流量停止時には計量液をシール機構に
よつて遮断して軸受部に浸入しないようにし、も
つて、軸受部を常に潤滑油で充たし、計量中は背
圧分だけ潤滑油の圧力が増大し、この圧力により
シール機構を開路し、わずかに潤滑油を計量液中
に圧送できるような逆止機能を与えるものであ
る。Means for Solving the Problems The present invention has been made to solve the above-mentioned drawbacks of the prior art.In particular, the pressure loss on the inflow side of the flowmeter is avoided for the lubricating oil in the lubricating oil filling chamber. By acting as pressure, forced lubrication is applied to the bearing part, but when the flow rate is stopped, the measuring fluid is shut off by a seal mechanism to prevent it from entering the bearing part, so that the bearing part is always filled with lubricating oil and the measuring fluid is Inside, the pressure of the lubricating oil increases by the back pressure, and this pressure opens the seal mechanism, providing a check function that allows a small amount of lubricating oil to be pumped into the metered liquid.
実施例
第１図は、本考案の一実施例を説明するための
要部断面図で、Ａ図は流量停止時における圧力状
態即ち軸受部計量液圧力P1と潤滑油圧力P2とが
等しい場合、Ｂ図は計量時の圧力状態即ち軸受部
計量液圧力P1が潤滑油圧力P2よりも小さい場合
の状態を示す。なお、図中、第２図と同様の作用
をする部分には第２図の場合と同一の参照番号が
付している。Embodiment Figure 1 is a sectional view of the main part for explaining an embodiment of the present invention, and Figure A shows the pressure state when the flow rate is stopped, that is, the bearing metered fluid pressure P 1 and the lubricating oil pressure P 2 are equal. In this case, diagram B shows the pressure state during metering, that is, the state when the bearing metered fluid pressure P 1 is smaller than the lubricating oil pressure P 2 . In addition, in the figure, the same reference numerals as in FIG. 2 are given to parts that have the same function as in FIG. 2.
第１図において、軸受ホルダー６の計量室側は
平滑な環状面６ａとなつており、該環状面に対
し、弾性環状体２０の外周が部分接触している。
弾性環状体２０は耐蝕性の弾性材、アモロフア
ス、ステンレス等の金属、プラスチツク、ゴム材
等の有機材の何れでもよく、又、外周部のみを超
硬合金、アモロフアス等で部分的に構成したもの
でもよい。この弾性環状体２０は弾性環状体固定
リング２１と同心的に固着され回転子軸３に固定
されている。固定リング２２は弾性環状体固定リ
ング２１の補助となるものであり、弾性環状体２
０を確実に所定位置に固定するための補助手段で
あり、必ずしも必要ないものである。油溝２３は
軸受面に平均して潤滑油を補強するだけでなく、
弾性環状体２０の外周面を開路する圧力を与える
導圧孔の作用をするものである。 In FIG. 1, the measuring chamber side of the bearing holder 6 is a smooth annular surface 6a, and the outer periphery of the elastic annular body 20 is partially in contact with the annular surface.
The elastic annular body 20 may be made of a corrosion-resistant elastic material, a metal such as amorphous metal, stainless steel, or an organic material such as plastic or rubber, or may have only the outer periphery partially made of cemented carbide, amorphous metal, etc. But that's fine. The elastic annular body 20 is fixed to the rotor shaft 3 by concentrically fixing the elastic annular body fixing ring 21 . The fixing ring 22 assists the elastic annular body fixing ring 21, and the elastic annular body 2
This is an auxiliary means for reliably fixing 0 in a predetermined position, and is not necessarily necessary. The oil groove 23 not only reinforces the lubricating oil evenly on the bearing surface, but also
It functions as a pressure guiding hole that applies pressure to open the outer peripheral surface of the elastic annular body 20.
効 果
以上の説明から明らかなように、本考案による
と簡易で安価により流量停止時には、弾性環状体
の弾性によりシールすることにより計量液が軸受
部に浸入することを防止するとともに、計量時に
は、シールを解除してシールによる摺動摩耗抵抗
を除去することにより、特に、低流量域の精度を
向上させることができる。更に、弾性作用に打勝
つ圧力を発生する流量域を越える大流では摺動部
がなくなるので長期間安定なシール効果が得られ
る。Effects As is clear from the above explanation, the present invention is simple and inexpensive, and when the flow rate is stopped, the elasticity of the elastic annular body seals to prevent the measured liquid from entering the bearing part. By releasing the seal and removing the sliding wear resistance due to the seal, accuracy especially in the low flow rate region can be improved. Furthermore, since there are no sliding parts in large flows that exceed the flow rate range that generates pressure that overcomes the elastic action, a stable sealing effect can be obtained for a long period of time.
第１図は、本考案の軸受潤滑装置におけるシー
ル機構の設明図で、Ａ図は流量停止時、Ｂ図は計
量時のシール材である弾性環状体の動作を示す
図、第２図は、従来のキヤツプシールによるシー
ルの様子を示す図である。
１……計量室、２……潤滑油充填室、３……回
転軸、４……回転子、５……端面板、６……軸受
ホルダー、７……軸受、８……シール溝、９……
キヤツプシール、２０……弾性環状体、２１……
弾性環状体固定リング、２２……固定リング、２
３……油溝。
Figure 1 is a schematic diagram of the sealing mechanism in the bearing lubricating device of the present invention, Figure A is a diagram showing the operation of the elastic annular body that is the sealing material when the flow rate is stopped, Figure B is a diagram showing the operation of the elastic annular body that is the sealing material during metering, and Figure 2 is a diagram showing the operation of the elastic annular body as the sealing material. , is a diagram showing a state of sealing by a conventional cap seal. 1... Measuring chamber, 2... Lubricating oil filling chamber, 3... Rotating shaft, 4... Rotor, 5... End plate, 6... Bearing holder, 7... Bearing, 8... Seal groove, 9 ……
Cap seal, 20... Elastic annular body, 21...
Elastic annular body fixing ring, 22...Fixing ring, 2
3...Oil groove.
Claims (1)
蔵した計量室と回転子軸受部を潤滑する潤滑油の
充填室とを、回転子軸受のシール機構と軸受部と
を配設した端面板によつて区画した容積型流量計
において、上記潤滑油充填室に対して流量計の差
圧に比例した圧力で加圧する加圧手段を具備し、
上記シール機構は、弾性環状体の外周面が軸受部
を計量室側から弾性的に押圧するごとく回転子軸
に挿通固着することを特徴とする容積型流量計の
軸受潤滑装置。 A metering chamber that rotatably incorporates a rotor that rotates in proportion to the flow rate and a lubricating oil filling chamber that lubricates the rotor bearing are installed in an end plate that has a sealing mechanism for the rotor bearing and the bearing. In the positive displacement flowmeter thus partitioned, the lubricating oil filling chamber is provided with pressurizing means for pressurizing the lubricating oil filling chamber with a pressure proportional to the differential pressure of the flowmeter,
The sealing mechanism is a bearing lubricating device for a positive displacement flowmeter, characterized in that the outer peripheral surface of the elastic annular body is inserted into and fixed to the rotor shaft so as to elastically press the bearing part from the measuring chamber side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985026815U JPH0219695Y2 (en) | 1985-02-26 | 1985-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985026815U JPH0219695Y2 (en) | 1985-02-26 | 1985-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61143022U JPS61143022U (en) | 1986-09-04 |
| JPH0219695Y2 true JPH0219695Y2 (en) | 1990-05-30 |
Family
ID=30523176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985026815U Expired JPH0219695Y2 (en) | 1985-02-26 | 1985-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0219695Y2 (en) |
-
1985
- 1985-02-26 JP JP1985026815U patent/JPH0219695Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61143022U (en) | 1986-09-04 |
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