JPS6193680U

JPS6193680U -

Info

Publication number: JPS6193680U
Application number: JP17825784U
Authority: JP
Priority date: 1984-11-26
Filing date: 1984-11-26
Publication date: 1986-06-17

Description

[Brief explanation of the drawing]

第１図は本考案の負圧式リリーフ弁を示す縦断
面図、第２図はこの負圧式リリーフ弁を組込む一
槽式包埋装置の回路図、第３図は従来の負圧式リ
リーフ弁を示す半部縦断面図である。１：処理槽、２：薬液タンク、３：パラフイン
槽、４：ロータリ弁、５：真空ポンプ、６，７，
８：三方弁、９，１０：リリーフ弁、１１：チエ
ツキ弁、１２：弁座、１３：弁筐、１４：弁体、
１４ａ：弁頭、１４ｂ：弁杆、１５：ナツト、１
６：圧縮ばね、１７：パツキング、１８：吸気口
、１９：接続口、２０：下片、２１：円筒部、２
２：空間、２３：Ｏリング、２４：弁筐、２５：
上片、２６：袋ナツト部、２７：シリンダ部、２
８：ピストン体、２９：ダイヤフラム、３０：弁
体、３１：ねじ、３２：スペーサ、３３：球面、
３４：貫通孔、３５：ナツト。 Fig. 1 is a vertical cross-sectional view showing the negative pressure relief valve of the present invention, Fig. 2 is a circuit diagram of a single tank embedding device incorporating this negative pressure relief valve, and Fig. 3 is a conventional negative pressure relief valve. It is a half longitudinal sectional view. 1: Processing tank, 2: Chemical tank, 3: Paraffin tank, 4: Rotary valve, 5: Vacuum pump, 6, 7,
8: Three-way valve, 9, 10: Relief valve, 11: Check valve, 12: Valve seat, 13: Valve housing, 14: Valve body,
14a: valve head, 14b: valve rod, 15: nut, 1
6: Compression spring, 17: Packing, 18: Intake port, 19: Connection port, 20: Lower piece, 21: Cylindrical part, 2
2: Space, 23: O-ring, 24: Valve housing, 25:
Upper piece, 26: Cap nut part, 27: Cylinder part, 2
8: Piston body, 29: Diaphragm, 30: Valve body, 31: Screw, 32: Spacer, 33: Spherical surface,
34: Through hole, 35: Nut.

Claims

[Scope of utility model registration request]

A lower piece that has an intake port communicating with the atmosphere and a connection port that connects the pipe line in the lower half, and that connects the two ports through a space inside the cylindrical part of the upper half, and a lower part on the top of this lower piece. It is attached to the upper side of the lower piece by screwing together a cap nut formed in A valve body with a spherical lower end surface and a vertical through hole in the center is held in the center of the diaphragm whose outer peripheral edge is supported, and the spherical surface is the lower surface of the space inside the cylindrical portion of the upper half of the lower piece. A compression spring is provided between the bottom surface of the piston body and the top surface of the valve body, facing the O-ring around the opening of the connection port provided in the center, and pressing the spherical surface toward the O-ring. The lower end of the screw screwed into the upper surface of the piece is in contact with the upper surface of the piston body.This is a negative pressure relief valve.