JPS6375669U - - Google Patents

Description

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

図面は本考案の実施例を示し、第１図は蝶形弁
構造の断面図、第２図はその一部の拡大断面図、
第３図は第２図の―線における断面図、第４
図は第２図の―線における断面図、第５図は
第２図の―線における断面図であり、第６図
は従来技術のバルブの断面図を示す。 Ａ……主弁、Ｂ……副弁、１……主弁軸、２…
…副弁軸、３……セグメントギヤ、４……主弁操
作軸、５……ウオームギヤ、６……ギヤケース、
７……固定インターナルギヤ、８……駆動インタ
ーナルギヤ、９……副弁操作軸、１０……インタ
ーナルピニオン。 The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of a butterfly valve structure, and FIG. 2 is an enlarged sectional view of a part thereof.
Figure 3 is a sectional view taken along the - line in Figure 2;
The figure is a cross-sectional view taken along the line --- in FIG. 2, FIG. 5 is a cross-sectional view taken along the -- line in FIG. 2, and FIG. 6 is a cross-sectional view of a conventional valve. A...Main valve, B...Sub-valve, 1...Main valve shaft, 2...
... Sub-valve shaft, 3 ... Segment gear, 4 ... Main valve operation shaft, 5 ... Worm gear, 6 ... Gear case,
7...Fixed internal gear, 8...Drive internal gear, 9...Sub-valve operation shaft, 10...Internal pinion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 主弁Ａの中央に副弁Ｂを嵌装するとともに両弁
Ａ，Ｂを同一軸心上の主弁軸１と副弁軸２とによ
り回動し開閉できるように枢支して構成する副弁
内蔵式蝶形弁において、弁箱１１の上部には、主
弁回動の減速機構を内蔵する支持ケース１７を設
け更にその上方には副弁Ｂ駆動の遊星歯車機構及
び減速機構を有するギヤケース６を設ける、上記
支持ケース１７には、主弁操作軸４により回動さ
せるウオームギヤ５と噛合する大きなセグメント
ギヤ３を設けるとともに、前記ウオームギヤ５を
設けた位置と相対する位置にセグメントギヤの背
面部３ａと当接して回動を規制するストツパー１
９，１９′を挿着してなる副弁内蔵式蝶形弁にお
ける両弁の開閉装置。 A sub-valve B is fitted in the center of the main valve A, and both valves A and B are pivotally supported by a main valve shaft 1 and a sub-valve shaft 2 on the same axis so that they can be opened and closed. In the butterfly valve with a built-in valve, a support case 17 containing a built-in deceleration mechanism for rotation of the main valve is provided above the valve box 11, and above the support case 17 is a gear case having a planetary gear mechanism and a deceleration mechanism for driving the auxiliary valve B. 6, the support case 17 is provided with a large segment gear 3 that meshes with a worm gear 5 rotated by the main valve operating shaft 4, and a rear portion of the segment gear is provided at a position opposite to the position where the worm gear 5 is provided. Stopper 1 that comes into contact with 3a to restrict rotation
An opening/closing device for both valves in a butterfly valve with a built-in auxiliary valve, which is formed by inserting 9 and 19'.