JP2001289335A - Valve for powdery material - Google Patents

Valve for powdery material

Info

Publication number
JP2001289335A
JP2001289335A JP2000108050A JP2000108050A JP2001289335A JP 2001289335 A JP2001289335 A JP 2001289335A JP 2000108050 A JP2000108050 A JP 2000108050A JP 2000108050 A JP2000108050 A JP 2000108050A JP 2001289335 A JP2001289335 A JP 2001289335A
Authority
JP
Japan
Prior art keywords
valve
powder
gap
box
gas
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
JP2000108050A
Other languages
Japanese (ja)
Inventor
Masayuki Fukumoto
雅行 福本
Masaki Takaishi
正記 高石
Toshio Ishiyama
敏夫 石山
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP2000108050A priority Critical patent/JP2001289335A/en
Publication of JP2001289335A publication Critical patent/JP2001289335A/en
Pending legal-status Critical Current

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  • Valve Housings (AREA)
  • Taps Or Cocks (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a valve for powdery material capable of preventing the accumulation of the powdery material in a clearance between a valve casing and a valve element. SOLUTION: This valve for powdery material is provided with a valve casing 1 and a valve element 2 installed in the valve casing 1 and to be rotated through a valve shaft 5 so as to open and close a powdery material flow passage. A gas blow hole 10 for blowing the gas into a clearance 11 between the valve element 2 and the valve casing 1 is provided in the valve casing 1 at a part opposite to the valve element 2, and the clearance 11 between the valve element 2 and the valve casing 1 is communicated with a downstream side of the powdery material flow passage.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、特に粉体を移送す
る粉体流路の開閉を行うための粉体用バルブに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder valve for opening and closing a powder passage for transferring powder.

【従来の技術】[Prior art]

【0002】化学工業、食品工業等では粉体を取り扱う
ことが多く、パイプ等で粉体の移送が行われる。そし
て、粉体移送の制御は、パイプ等の粉体流路にボールバ
ルブ、ロータリーバルブ等のバルブ(開閉弁)を設けて
行われている。このようなバルブには、通常、ボールバ
ルブやロータリーバルブが多く使用されている。例えば
ボールバルブの場合には、弁箱内に弁体を装填し、弁軸
を介して弁体を回転させて粉体流路を開閉する。弁箱と
弁体との間にはそれらの間をシールするための弁座が設
けられる。
[0002] In the chemical industry, the food industry, and the like, powder is often handled, and the powder is transferred using a pipe or the like. The powder transfer is controlled by providing a valve (open / close valve) such as a ball valve or a rotary valve in a powder flow path such as a pipe. Generally, ball valves and rotary valves are often used for such valves. For example, in the case of a ball valve, a valve element is loaded in a valve box, and the valve element is rotated via a valve shaft to open and close the powder flow path. A valve seat for sealing between the valve box and the valve body is provided.

【0003】[0003]

【発明が解決しようとする課題】上記のような粉体用バ
ルブを利用して粉体の制御を行う場合、上記弁箱と弁体
との隙間に粉体が溜まりやすい。一般に弁箱と弁体との
間は弁座でシールされているため、粉体や液体の侵入は
防止されているが、粉体が微細であればあるほど弁座と
弁体との間から侵入して上記隙間内に溜まりやすく、こ
れをそのまま放置しておくと、バルブの開閉に支障をき
たすおそれがある。
In the case where powder is controlled using the above-described powder valve, the powder tends to accumulate in the gap between the valve box and the valve element. Generally, the space between the valve box and the valve body is sealed by a valve seat, so that intrusion of powder or liquid is prevented.However, the finer the powder, the more the space between the valve seat and the valve body It tends to enter and accumulate in the gap, and if left undisturbed, opening and closing of the valve may be hindered.

【0004】このため、頻繁にバルブを分解して溜まっ
た粉体を除去する作業が必要となり、粉体移送の効率が
悪いという問題があった。特に、粉体が吸湿性粉体であ
ったり(例えば炭酸カリウム粉末等)、液体を含んだ粉
体(例えば洗浄直後のポリマー粉末等)である場合に
は、上記隙間内に侵入した粉体が速やかに凝固して、バ
ルブの開閉ができなくなる。
[0004] For this reason, it is necessary to frequently disassemble the valve and remove the accumulated powder, and there is a problem that the efficiency of powder transfer is low. In particular, when the powder is a hygroscopic powder (for example, potassium carbonate powder or the like) or a powder containing a liquid (for example, a polymer powder immediately after washing, etc.), the powder that has penetrated into the above-mentioned gap may be used. It quickly solidifies and the valve cannot be opened or closed.

【0005】従って、本発明の目的は、粉体が弁箱と弁
体との隙間に溜まるのを防止した粉体用バルブを提供す
ることである。
Accordingly, it is an object of the present invention to provide a powder valve which prevents powder from accumulating in a gap between a valve box and a valve body.

【0006】[0006]

【課題を解決するための手段】上記課題を解決するため
の本発明の粉体用バルブは、弁箱と、この弁箱内に装填
され弁軸を介して回転し粉体流路の開閉を行う弁体とを
備えたものであって、前記弁体と対向した弁箱に、弁体
と弁箱との隙間に気体を吹き込むための気体吹き込み孔
を設け、さらに弁体と弁箱との隙間が粉体流路の下流側
と連通していることを特徴とする。
A powder valve according to the present invention for solving the above-mentioned problems is provided with a valve box, and a powder passage mounted in the valve box and rotated through a valve shaft to open and close the powder passage. A valve body to perform, wherein the valve box facing the valve body is provided with a gas blowing hole for blowing gas into a gap between the valve body and the valve box, and further provided with a valve body and the valve box. The gap communicates with the downstream side of the powder flow path.

【0007】かかる本発明によれば、気体吹き込み孔か
ら弁体と弁箱との隙間に吹き込まれた気体は、該隙間内
を通って粉体流路の下流側へ流れるため、弁体と弁箱と
の隙間に粉体が溜まるのを防止することができる。気体
の吹き込みは、バルブの閉時および開時のいずれかであ
ってもよく、あるいは気体を常時または所定間隔で間欠
的に吹き込むようにしてもよい。
According to the present invention, the gas blown into the gap between the valve body and the valve box from the gas blowing hole flows to the downstream side of the powder flow path through the gap. It is possible to prevent powder from accumulating in the gap between the box and the box. The gas may be blown when the valve is closed or open, or the gas may be blown constantly or intermittently at predetermined intervals.

【0008】本発明では、粉体が上記隙間内へ侵入する
のを出来る限り防止するために、粉体流路の上流側に、
前記弁箱と弁体との間をシールする弁座を設けるのが好
ましい。
In the present invention, in order to prevent the powder from entering the gap as much as possible, an upstream side of the powder flow path is provided.
It is preferable to provide a valve seat for sealing between the valve box and the valve element.

【0009】[0009]

【発明の実施の形態】本発明の一実施形態を図1および
図2を参照して以下説明する。図1はこの実施形態にか
かる粉体用ボールバルブを示している。このボールバル
ブは、弁箱1と弁体2とを主要構成部材とする。弁箱1
は、弁箱本体1aとこれにボルト3,4で固定される本
体カバー1bとからなり、粉体流入口15と粉体排出口
16とを有する。弁体2の一端には弁軸5が取り付けら
れ、この弁軸5によって弁体2は回転しバルブの開閉を
行う。弁体2の他端は固定軸6によって回転可能に支承
されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a ball valve for powder according to this embodiment. This ball valve has a valve box 1 and a valve body 2 as main components. Valve box 1
Is composed of a valve body 1a and a body cover 1b fixed thereto by bolts 3 and 4, and has a powder inlet 15 and a powder outlet 16. A valve shaft 5 is attached to one end of the valve body 2, and the valve body 2 is rotated by the valve shaft 5 to open and close the valve. The other end of the valve body 2 is rotatably supported by a fixed shaft 6.

【0010】図1に示すように、この実施形態にかかる
ボールバルブは、粉体を上から下に流す粉体流路に使用
されている。粉体流路の上流側(矢印8で示す)には、
弁箱1と弁体2との間をシールするための弁座7が設け
られる。図1のA部を拡大した図2に示すように、弁座
7は、その背部に設けたスプリング12によって先端が
弁体2に押圧されており、これによって弁箱1と弁体2
との間をシールしている。図2において、13は保持
具、14はパッキングである。
As shown in FIG. 1, the ball valve according to this embodiment is used in a powder flow path for flowing powder from top to bottom. On the upstream side of the powder flow path (indicated by arrow 8),
A valve seat 7 for sealing between the valve box 1 and the valve body 2 is provided. As shown in FIG. 2 which is an enlarged view of the portion A in FIG.
The seal is between. In FIG. 2, 13 is a holder and 14 is a packing.

【0011】一方、粉体流路の下流側(矢印9で示す)
には弁座が設けられておらず、従って図1のB部を拡大
した図3に示すように弁箱1と弁体2との間の隙間11
は粉体流路の下流側と連通している。
On the other hand, on the downstream side of the powder flow path (indicated by arrow 9)
1 is not provided with a valve seat. Therefore, as shown in FIG.
Communicates with the downstream side of the powder flow path.

【0012】また、図1に示すように、上流側近傍の弁
箱1には気体吹き込み孔10が形成される。この気体吹
き込み孔10は弁体2と弁箱1との隙間11に気体を吹
き込むためのものである。気体導入孔10には気体吹き
込み用のパイプ(図示せず)が接続され、前記隙間11
内に気体を強制的に送り込む。気体としては、例えば空
気、窒素ガス等の任意の気体が使用可能である。
As shown in FIG. 1, a gas injection hole 10 is formed in the valve box 1 near the upstream side. This gas blowing hole 10 is for blowing gas into the gap 11 between the valve body 2 and the valve box 1. A gas injection pipe (not shown) is connected to the gas introduction hole 10,
Gas is forcibly sent into the inside. As the gas, for example, any gas such as air and nitrogen gas can be used.

【0013】次にこの実施形態の動作を説明する。粉体
の移送時には、図1に示す開状態で粉体がバルブを通っ
て移送される。移送を止める場合には、弁軸5を回転さ
せて弁体2を約90°回転させて粉体流路を閉じる。こ
れらの操作において、弁座7と弁体2との隙間等から弁
箱1と弁体2との隙間11に粉体が侵入するおそれがあ
るが、粉体流路の上流側に設けた気体吹き込み孔10か
ら隙間11内に吹き込まれた気体によって粉体は隙間1
1から除去されると共に、隙間11と連通した粉体流路
の下流側に排出される。
Next, the operation of this embodiment will be described. When transferring the powder, the powder is transferred through the valve in the open state shown in FIG. When the transfer is stopped, the valve shaft 2 is rotated to rotate the valve body 2 by about 90 ° to close the powder flow path. In these operations, the powder may enter the gap 11 between the valve box 1 and the valve body 2 from the gap between the valve seat 7 and the valve body 2 or the like. The powder blown into the gap 11 from the blowing hole 10 causes
1 and is discharged to the downstream side of the powder flow path communicating with the gap 11.

【0014】このため、弁箱1と弁体2との隙間11に
粉体が溜まるのが防止されるため、溜まった粉体を除去
するために弁箱1を本体1aと本体カバー1bとに分解
する必要がなく、連続的に粉体移送を行えるので、粉体
移送の効率が向上する。気体の吹き込みは、バルブの閉
時および開時のいずれかであってもよく、あるいは開閉
のいかんを問わず気体を常時または所定間隔で間欠的に
吹き込むようにしてもよい。
For this reason, since powder is prevented from accumulating in the gap 11 between the valve box 1 and the valve body 2, the valve box 1 is moved to the main body 1a and the main body cover 1b in order to remove the accumulated powder. Since there is no need to disassemble and the powder can be continuously transferred, the efficiency of powder transfer is improved. The gas may be blown either when the valve is closed or opened, or the gas may be blown constantly or intermittently at a predetermined interval regardless of whether the valve is opened or closed.

【0015】図4は本発明の他の実施形態を示してお
り、図3と同様な部位の拡大図である。この実施形態で
は、粉体流路の上流側に加えて、粉体流路の下流側にも
弁座27および保持具23を設け、この弁座27および
保持具23の弁体2との対向面に気体通過用の溝14を
設けたものである。この溝14によって、隙間11は粉
体流路の下流側と連通する。
FIG. 4 shows another embodiment of the present invention, and is an enlarged view of a portion similar to FIG. In this embodiment, in addition to the upstream side of the powder passage, the valve seat 27 and the holder 23 are provided downstream of the powder passage, and the valve seat 27 and the holder 23 are opposed to the valve body 2. A gas passage groove 14 is provided on the surface. By the groove 14, the gap 11 communicates with the downstream side of the powder flow path.

【0016】従って、この実施形態では、弁箱1と弁体
2との隙間11に吹き込まれた気体は、弁座27および
保持具23に設けた溝14を通って粉体流路の下流側に
排出される。このため、隙間11内の粉体も隙間11内
に吹き込まれた気体によって溝14を通って粉体流路の
下流側に排出される。なお、溝14は周方向に沿って所
定間隔で形成されていればよい。その他の構成は図1〜
図3に示すバルブと同じであるので、同一符合を付して
説明を省略する。
Therefore, in this embodiment, the gas blown into the gap 11 between the valve box 1 and the valve body 2 passes through the groove 14 provided in the valve seat 27 and the holder 23 and is located downstream of the powder flow path. Is discharged. For this reason, the powder in the gap 11 is also discharged to the downstream side of the powder flow path through the groove 14 by the gas blown into the gap 11. Note that the grooves 14 may be formed at predetermined intervals along the circumferential direction. Other configurations are shown in FIGS.
3 are the same as those shown in FIG.

【0017】なお、以上の実施形態はボールバルブにつ
いてのものであるが、本発明はロータリバルブ等の他の
バルブについても同様にして適用可能である。
Although the above embodiment is directed to a ball valve, the present invention can be similarly applied to other valves such as a rotary valve.

【0018】[0018]

【発明の効果】本発明によれば、弁体と対向した弁箱
に、弁体と弁箱との隙間に気体を吹き込むための気体吹
き込み孔を設け、さらに弁体と弁箱との隙間が粉体流路
の下流側と連通しているため、弁体と弁箱との隙間に吹
き込まれた気体によって、該隙間内に溜まった粉体を粉
体流路の下流側へ排出でき、当該隙間に粉体が溜まるの
を防止することができる。このため、隙間に溜まった粉
体を除去するために弁箱を分解する必要がなくなり、粉
体移送の効率が向上するという効果がある。
According to the present invention, the valve box facing the valve element is provided with a gas blowing hole for blowing gas into the gap between the valve element and the valve box. Because it is in communication with the downstream side of the powder flow path, the powder accumulated in the gap between the valve body and the valve box can be discharged to the downstream side of the powder flow path by the gas blown into the gap between the valve body and the valve box. It is possible to prevent powder from accumulating in the gap. For this reason, there is no need to disassemble the valve box to remove the powder accumulated in the gap, and there is an effect that the efficiency of powder transfer is improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態にかかる粉体用ボールバル
ブを示す断面図である。
FIG. 1 is a sectional view showing a ball valve for powder according to an embodiment of the present invention.

【図2】図1のA部分の拡大断面図である。FIG. 2 is an enlarged sectional view of a portion A in FIG.

【図3】図1のB部分の拡大断面図である。FIG. 3 is an enlarged sectional view of a portion B in FIG.

【図4】本発明の他の実施形態における、図3と同様な
部位の拡大断面図である。
FIG. 4 is an enlarged sectional view of a portion similar to FIG. 3 in another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 弁箱 2 弁体 5 弁軸 7 弁座 10 気体吹き込み孔 11 隙間 12 スプリング 13 保持具 14 溝 DESCRIPTION OF SYMBOLS 1 Valve box 2 Valve body 5 Valve shaft 7 Valve seat 10 Gas blowing hole 11 Gap 12 Spring 13 Holder 14 Groove

───────────────────────────────────────────────────── フロントページの続き (72)発明者 石山 敏夫 愛媛県新居浜市惣開町5番1号 住友化学 工業株式会社内 Fターム(参考) 3H051 AA07 BB10 CC17 FF06 3H054 AA03 BB25 CC10 CD01 GG05 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Ishiyama 5-1 Sokai-cho, Niihama-shi, Ehime F-term (reference) in Sumitomo Chemical Co., Ltd. 3H051 AA07 BB10 CC17 FF06 3H054 AA03 BB25 CC10 CD01 GG05

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】弁箱と、この弁箱内に装填され、弁軸を介
して回転し粉体流路の開閉を行う弁体とを備えた粉体用
バルブにおいて、 前記弁体と対向した弁箱に、弁体と弁箱との隙間に気体
を吹き込むための気体吹き込み孔を設け、さらに弁体と
弁箱との隙間が粉体流路の下流側と連通していることを
特徴とする粉体用バルブ。
1. A powder valve comprising: a valve box; and a valve element mounted in the valve box and rotating through a valve shaft to open and close a powder flow path. The valve box is provided with a gas blowing hole for blowing gas into a gap between the valve body and the valve box, and the gap between the valve body and the valve box communicates with the downstream side of the powder flow path. Valve for powder.
【請求項2】前記弁箱と弁体との間をシールする弁座を
粉体流路の上流側に設けた請求項1記載の粉体用バル
ブ。
2. The powder valve according to claim 1, wherein a valve seat for sealing between the valve box and the valve element is provided on an upstream side of the powder flow path.
【請求項3】ボールバルブである請求項1または2記載
の粉体用バルブ。
3. The powder valve according to claim 1, which is a ball valve.
JP2000108050A 2000-04-10 2000-04-10 Valve for powdery material Pending JP2001289335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000108050A JP2001289335A (en) 2000-04-10 2000-04-10 Valve for powdery material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000108050A JP2001289335A (en) 2000-04-10 2000-04-10 Valve for powdery material

Publications (1)

Publication Number Publication Date
JP2001289335A true JP2001289335A (en) 2001-10-19

Family

ID=18620964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000108050A Pending JP2001289335A (en) 2000-04-10 2000-04-10 Valve for powdery material

Country Status (1)

Country Link
JP (1) JP2001289335A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087739A1 (en) * 2006-02-05 2007-08-09 Yongsheng Song Valve seat
JP2010255750A (en) * 2009-04-24 2010-11-11 Hisaka Works Ltd Valve device
CN107600750A (en) * 2017-10-18 2018-01-19 宁夏洁宁新能源有限公司 The cloth bucket valve of anti-particle obstruction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087739A1 (en) * 2006-02-05 2007-08-09 Yongsheng Song Valve seat
CN101400930B (en) * 2006-02-05 2012-05-30 宋永生 Valve seat
JP2010255750A (en) * 2009-04-24 2010-11-11 Hisaka Works Ltd Valve device
CN107600750A (en) * 2017-10-18 2018-01-19 宁夏洁宁新能源有限公司 The cloth bucket valve of anti-particle obstruction

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