JPH0243835U

JPH0243835U -

Info

Publication number: JPH0243835U
Application number: JP5613889U
Authority: JP
Priority date: 1988-05-23
Filing date: 1989-05-15
Publication date: 1990-03-27

Description

[Brief explanation of drawings]

第１図は本考案一実施例のロータリーバルブの
要部断面図、第２図はその要部拡大断面図、第３
図はそのロータリーバルブを収容タンクの取り出
し口に配置した状態を示す概略断面図、第４図は
気体の圧力と漏れ量との関係を示したグラフ、第
５図は本考案の他の実施例のロータリーバルブの
要部断面図、第６図ａ及びｂはそれぞれ本考案の
さらに他の実施例のロータリーバルブの要部断面
図、第７図はサイド減圧シール部を有する実施例
のロータリーバルブの要部断面図、第８図は第７
図の実施例のローターの要部斜視図、第９図は従
来のロータリーバルブの要部断面図、第１０図は
そのロータリーバルブを収容タンクの取り出し口
に配置した状態を示す概略断面図、第１１図はそ
の説明図である。１……ローター、２……ケーシング、３……回
転軸、５……ロータリーバルブ、８……シール部
材、１０……ブレード、１１，５８……ローター
側壁、１２……凹部、３０……減圧シール部、３
１……流路、３２，３９ａ，３９ｂ……空間部、
３４……サイド減圧シール部、３５ａ，３５ｂ…
…シール部材、３６……コの字状部、３７……突
起部、３９……空間領域、４０……エアパージ孔
。 Fig. 1 is a sectional view of the main part of a rotary valve according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part, and Fig. 3 is an enlarged sectional view of the main part.
The figure is a schematic sectional view showing the rotary valve arranged at the outlet of the storage tank, Figure 4 is a graph showing the relationship between gas pressure and leakage amount, and Figure 5 is another embodiment of the present invention. FIGS. 6a and 6b are sectional views of essential parts of a rotary valve according to another embodiment of the present invention, and FIG. 7 is a sectional view of an embodiment of a rotary valve having a side pressure reducing seal. Main part sectional view, Fig. 8 is Fig. 7
9 is a sectional view of the main parts of a conventional rotary valve, FIG. 10 is a schematic sectional view showing the rotary valve arranged at the outlet of the storage tank, and FIG. FIG. 11 is an explanatory diagram thereof. DESCRIPTION OF SYMBOLS 1... Rotor, 2... Casing, 3... Rotating shaft, 5... Rotary valve, 8... Seal member, 10... Blade, 11, 58... Rotor side wall, 12... Recess, 30... Pressure reduction Seal part, 3
1... Channel, 32, 39a, 39b... Space part,
34...Side pressure reduction seal portion, 35a, 35b...
... Seal member, 36 ... U-shaped portion, 37 ... Projection, 39 ... Space region, 40 ... Air purge hole.

Claims

[Claims for Utility Model Registration] 1. A plurality of blades arranged radially around the rotating shaft, a rotor side wall arranged outside in the axial direction of each blade, and the space between the adjacent blade and the rotor side wall. A rotary valve comprising a rotor having a recess formed to open outwardly, and a casing in which the rotor is rotatably disposed, wherein a sealing member is provided on the outer side of the rotor side wall in the axial direction. A vacuum seal portion is provided between the sealing member and the inner surface of the casing, and the vacuum seal portion has a narrow flow path, is continuous with the flow path, and has a narrow flow path that has a narrow flow area compared to the effective flow cross-sectional area of the flow path. A rotary valve having a space with a large effective cross-sectional area. 2. The rotary valve according to claim 1, wherein the space portion is formed discontinuously along the circumferential direction of the vacuum seal portion. 3. A narrow flow path is provided at the outer circumferential portion between the side flange portion provided on the axially outer side of the casing and the rotor side wall, and the narrow flow path is continuous with the flow path and is larger than the effective flow cross-sectional area of the flow path. A side vacuum seal portion having a space having a large effective flow cross-sectional area is provided, and an air purge hole communicating with a side space formed between the side flange and the rotor side wall is provided in the side flange. Claim 1
Or the rotary valve according to 2.