JP2008045669A - Cylinder valve type three-way valve - Google Patents
Cylinder valve type three-way valve Download PDFInfo
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- JP2008045669A JP2008045669A JP2006222276A JP2006222276A JP2008045669A JP 2008045669 A JP2008045669 A JP 2008045669A JP 2006222276 A JP2006222276 A JP 2006222276A JP 2006222276 A JP2006222276 A JP 2006222276A JP 2008045669 A JP2008045669 A JP 2008045669A
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Abstract
Description
本発明は、粉粒体を空気輸送する際に用いる円筒バルブ型三方弁に関するものである。更に詳しくは粉粒体を空気輸送するに際し、該三方弁の弁体と弁箱との摺接部分への粉粒体の噛み込みが防止された優れた特徴を有する円筒バルブ型三方弁に関するものである。 The present invention relates to a cylindrical valve type three-way valve used when pneumatically transporting a granular material. More specifically, the present invention relates to a cylindrical valve type three-way valve having an excellent feature in which the granular material is prevented from biting into the sliding contact portion between the valve body of the three-way valve and the valve box when the granular material is pneumatically transported. It is.
ポリエチレンやポリプロピレン等のポリオレフィン類は、重合槽で重合された後種々の後処理を経て、貯槽へペレットや粉体等の粉粒体の形態で空気輸送されるのが通常である。この粉粒体の輸送に際しては、複数の貯槽へ三方弁で行き先を切り替えて輸送を行うが、弁体の方向を切り替えたときにペレットやペレットが糸状に変形したいわゆるフロス等が弁体と弁座との摺接部分のわずかな間隙に噛み込み弁体の回転が妨げられることがあった。 Polyolefins such as polyethylene and polypropylene are usually transported by air in the form of pellets, powders and other granular materials after being polymerized in a polymerization tank and after various post-treatments. When transporting this granular material, the destination is switched to a plurality of storage tanks with a three-way valve. In some cases, a slight gap in the sliding contact portion with the seat bites the rotation of the valve body.
かかる摺接部分への漏れ込みの問題は、粉粒体のみならず液体やガス等の取り扱いに際しても問題とされ、例えば、液体を扱う三方弁において、弁体と常時接触する弁座の摺接面部分の面積を一定割合に限定する方法（特許文献１参照）やガスを扱う三方弁において、流出ポートの切り替え時にガスが弁体内のガス通路に閉じ込められないように一時的に２つの流出ポートが連通するように設計するしガスが外部へ漏れないようにする等の工夫が行われている（特許文献２参照）。しかし、これらは粉粒体を扱う三方弁には必ずしも適切ではなく一層の改良が求められていた。 Such a problem of leakage into the sliding contact portion is a problem in handling not only powder and granular materials but also liquid and gas. For example, in a three-way valve that handles liquid, sliding contact of a valve seat that is always in contact with a valve body. In a method of limiting the area of the surface portion to a certain ratio (see Patent Document 1) and a three-way valve that handles gas, two outflow ports are temporarily used so that the gas is not confined in the gas passage in the valve body when the outflow port is switched. Are designed to communicate with each other and gas is not leaked to the outside (see Patent Document 2). However, these are not necessarily suitable for the three-way valve for handling powder particles, and further improvements have been demanded.
かかる状況において、本発明は、粉粒体を空気輸送する際に用いる円筒バルブ型三方弁の弁体と弁箱との摺接部分への粉粒体の噛み込みを防止し、長期に亘り安定的に使用が可能な円筒バルブ型三方弁の提供を目的とする。 In such a situation, the present invention prevents the granular material from biting into the sliding contact portion between the valve body and the valve box of the cylindrical valve type three-way valve used when pneumatically transporting the granular material, and is stable for a long time. An object of the present invention is to provide a cylindrical valve type three-way valve that can be used in a practical manner.
すなわち本発明は、
（１）円筒バルブ型三方弁において、該三方弁の弁体と弁箱とが摺接する摺接部分に弁箱外面より空気または窒素を導入するノズルを設け、前記摺接部分を加圧することを特徴とする円筒バルブ型三方弁、
（２）前記ノズルを少なくとも摺接部分の２箇所に設けることを特徴とする（１）の円筒バルブ型三方弁、
（３）（１）または（２）の円筒バルブ型三方弁を使用し、粉粒体を空気輸送することを特徴とする粉粒体の空気輸送方法、
に係るものである。
That is, the present invention
(1) In a cylindrical valve type three-way valve, a nozzle that introduces air or nitrogen from the outer surface of the valve box is provided at a sliding contact part where the valve body of the three-way valve and the valve box are in sliding contact, and the sliding contact part is pressurized. Cylindrical valve type three-way valve,
(2) The cylindrical valve-type three-way valve according to (1), wherein the nozzle is provided at least in two portions of the sliding contact portion,
(3) A method of pneumatically transporting a granular material using the cylindrical valve type three-way valve of (1) or (2), wherein the granular material is pneumatically transported,
It is related to.
本発明により、粉粒体を空気輸送する際に用いる円筒バルブ型三方弁の弁体と弁箱との摺接部分への粉粒体の噛み込みを防止し、長期に亘り安定的に使用が可能な円筒バルブ型三方弁を提供をすることが可能となった。 According to the present invention, it is possible to prevent the granular material from biting into the sliding contact portion between the valve body and the valve box of the cylindrical valve type three-way valve used when pneumatically transporting the granular material, and to be used stably over a long period of time. It became possible to provide a possible three-way valve with a cylindrical valve.
図１（ａ）に、本発明の円筒バルブ型三方弁の概要を示す断面図であり、粉粒体の流路をＡ−Ｂに切り替えた状態、図１（ｂ）に本発明の円筒バルブ型三方弁の概要を示す断面図であり、粉粒体の流路をＡ−Ｃに切り替えた状態を示す。 FIG. 1 (a) is a cross-sectional view showing an outline of the cylindrical valve type three-way valve of the present invention, in a state where the flow path of the granular material is switched to AB, and FIG. 1 (b) shows the cylindrical valve of the present invention. It is sectional drawing which shows the outline | summary of a type | mold three-way valve, and shows the state which switched the flow path of the granular material to AC.
本発明の円筒バルブ型三方弁は、ステンレス鋼で形成され弁体１、弁箱２、摺接部分３、ノズル４a、４ｂ、粉粒体の流路Ａ、Ｂ、Ｃよりなっている。弁体１には粉粒体の流路が設けられ、粉粒体の流路をＡ−Ｂ（図１（ａ））、Ａ−Ｃ（図１（ｂ））に切り替えることができるようになっている。弁箱２の内部に収納された弁体１が回転した場合に摺接する摺接部分３は、弁座の機能を有しており弁箱と一体となっている。摺接部分３と弁体１との間隙は、０.５ｍｍ程度である。粉粒体の流路はＡ、Ｂ、Ｃそれぞれが外部の粉粒体の配管と接続できるようになっている。
The cylindrical valve type three-way valve of the present invention is made of stainless steel and includes a
本発明の主要部分は、弁箱２の摺接部分３に空気または窒素を導入して加圧することができるノズル４ａ、４ｂを設けた点である。このノズルは、少なくとも摺接部分の２箇所に空気または窒素を導入して加圧することができるように設けることが好ましい。粉粒体の空送圧力は通常２０〜３０ＫＰａＧであるので、このノズルには、例えば７００ＫＰａＧの計装用空気圧をかけておけば弁体を回転させたときの摺接部分への粉粒体の噛み込みを防ぐことができる。 The main part of the present invention is that nozzles 4a and 4b that can introduce and pressurize air or nitrogen into the sliding contact portion 3 of the valve box 2 are provided. This nozzle is preferably provided so that air or nitrogen can be introduced and pressurized at least at two locations in the sliding contact portion. Since the air pressure of the granular material is usually 20-30 KPaG, if an air pressure for instrumentation of 700 KPaG is applied to this nozzle, for example, the granular material bites into the sliding contact part when the valve body is rotated. Can be prevented.
以下、本発明を実施例に基づいて、より具体的に説明するが、もとより本発明はこれら実施例に限定されるものではない。
実施例１
図１に示したような三方弁を有する設備を用いて、ポリプロピレンの粉粒体の空気輸送を行った。粉粒体の流路を図１（ａ）の状態から図１（ｂ）の状態へ切替える操作を、ノズル４ａ、４ｂより空気による加圧をした状態と加圧をしない状態とでそれぞれ３００回行い、円筒バルブ型三方弁の弁体の回転不良の発生回数を測定した。粉粒体の空送圧力は、約２５ＫＰａＧ、加圧用空気の圧力は７００ＫＰａＧであった。測定結果を表１に示す。
この結果から、円筒バルブ型三方弁にノズル４ａ、４ｂを設け空気による加圧を行う事で、摺接部分への粉流体の噛み込みによる弁体の回転不良が非常に少ないことが分かった。
EXAMPLES Hereinafter, although this invention is demonstrated more concretely based on an Example, this invention is not limited to these Examples from the first.
Example 1
Using the equipment having a three-way valve as shown in FIG. The operation of switching the flow path of the granular material from the state of FIG. 1 (a) to the state of FIG. 1 (b) is performed 300 times for each of the state in which pressure is applied by air from the nozzles 4a and 4b and the state in which no pressure is applied. The number of occurrences of rotation failure of the valve body of the cylindrical valve type three-way valve was measured. The air pressure of the granular material was about 25 KPaG, and the pressure of the pressurizing air was 700 KPaG. The measurement results are shown in Table 1.
From this result, it was found that by providing nozzles 4a and 4b on the cylindrical valve type three-way valve and pressurizing with air, the rotation failure of the valve body due to the biting of the powder fluid into the sliding contact portion is very small.
１…弁体、２…弁箱、３…摺接部分、４a、４ｂ…ノズル、Ａ、Ｂ、Ｃ…粉粒体の流路
DESCRIPTION OF
Claims (3)
A method for pneumatically transporting a granular material, wherein the cylindrical valve type three-way valve according to claim 1 or 2 is used and the granular material is pneumatically transported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006222276A JP2008045669A (en) | 2006-08-17 | 2006-08-17 | Cylinder valve type three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006222276A JP2008045669A (en) | 2006-08-17 | 2006-08-17 | Cylinder valve type three-way valve |
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| JP2008045669A true JP2008045669A (en) | 2008-02-28 |
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| JP2006222276A Pending JP2008045669A (en) | 2006-08-17 | 2006-08-17 | Cylinder valve type three-way valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839355A (en) * | 2009-03-16 | 2010-09-22 | 喜开理株式会社 | Rotary switching valve |
| WO2012005134A1 (en) * | 2010-07-09 | 2012-01-12 | 日本ボールバルブ株式会社 | Ball valve |
| KR20180086448A (en) | 2015-11-26 | 2018-07-31 | 히타치가세이가부시끼가이샤 | METHOD FOR MANUFACTURING ELECTRONIC COMPONENTS, RESIN COMPOSITION FOR TITANIUM RESINS, RESIN FILM FOR TITANIUM PREPARATION |
| KR102186434B1 (en) * | 2019-07-04 | 2020-12-03 | 김성원 | Rotary damper |
| EP4015031A1 (en) * | 2015-12-31 | 2022-06-22 | CareFusion 303, Inc. | Systems and methods for intermittent infusion |
-
2006
- 2006-08-17 JP JP2006222276A patent/JP2008045669A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839355A (en) * | 2009-03-16 | 2010-09-22 | 喜开理株式会社 | Rotary switching valve |
| US8371334B2 (en) | 2009-03-16 | 2013-02-12 | Ckd Corporation | Rotary switching valve |
| WO2012005134A1 (en) * | 2010-07-09 | 2012-01-12 | 日本ボールバルブ株式会社 | Ball valve |
| JP2012017826A (en) * | 2010-07-09 | 2012-01-26 | Nippon Ball Valve Co Ltd | Ball valve |
| CN102985731A (en) * | 2010-07-09 | 2013-03-20 | 日本球阀株式会社 | Ball valve |
| CN102985731B (en) * | 2010-07-09 | 2015-04-08 | 日本球阀株式会社 | Ball valve |
| KR20180086448A (en) | 2015-11-26 | 2018-07-31 | 히타치가세이가부시끼가이샤 | METHOD FOR MANUFACTURING ELECTRONIC COMPONENTS, RESIN COMPOSITION FOR TITANIUM RESINS, RESIN FILM FOR TITANIUM PREPARATION |
| EP4015031A1 (en) * | 2015-12-31 | 2022-06-22 | CareFusion 303, Inc. | Systems and methods for intermittent infusion |
| US11896796B2 (en) | 2015-12-31 | 2024-02-13 | Carefusion 303, Inc. | Disposable intravenous (IV) set with flow control valve |
| KR102186434B1 (en) * | 2019-07-04 | 2020-12-03 | 김성원 | Rotary damper |
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