JPH0482462U - - Google Patents

Description

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

第１図は本考案の実施例を示すポペツト部分の
断面図、第２図は吸込安全弁の断面図、第３図は
従来のポペツト部分の断面図である。 １は主高圧ポート、２は主低圧ポート、３は筒
形弁、４は高圧ポート、５は低圧ポート、６はメ
インポペツト、６ａは受圧室、７は中空パツト、
８はパイロツトポペツト、９はスプリング、１４
はシート、１５は調整スクリユ。 FIG. 1 is a sectional view of a poppet portion showing an embodiment of the present invention, FIG. 2 is a sectional view of a suction safety valve, and FIG. 3 is a sectional view of a conventional poppet portion. 1 is a main high pressure port, 2 is a main low pressure port, 3 is a cylindrical valve, 4 is a high pressure port, 5 is a low pressure port, 6 is a main poppet, 6a is a pressure receiving chamber, 7 is a hollow part,
8 is the pilot poppet, 9 is the spring, 14
is the seat, and 15 is the adjustment screw.

Claims (1)

【実用新案登録請求の範囲】 主高圧ポート１と主低圧ポート２を開閉する筒
形弁３と、この筒形弁３の高圧ポート４と低圧ポ
ート５を開閉するメインポペツト６と、このメイ
ンポペツト６に嵌挿されて主高圧ポート１とメイ
ンポペツト６の受圧室６ａを連通する中空ロツド
７と、その受圧室６ａと主低圧ポート２を開閉す
るパイロツトポペツト８とを備えた吸込安全弁に
おいて、 前記パイロツトポペツト８をシート１４に押し
付けるスプリング９を、そのポペツト側の外径が
調整スクリユ１５側の外径より小さい形状とした
ことを特徴とする吸込安全弁。[Claim for Utility Model Registration] A cylindrical valve 3 that opens and closes the main high pressure port 1 and the main low pressure port 2, a main poppet 6 that opens and closes the high pressure port 4 and the low pressure port 5 of the cylindrical valve 3, and the main poppet 6. A suction safety valve comprising a hollow rod 7 which is fitted and communicates between the main high pressure port 1 and the pressure receiving chamber 6a of the main poppet 6, and a pilot poppet 8 which opens and closes the pressure receiving chamber 6a and the main low pressure port 2. This suction safety valve is characterized in that the spring 9 that presses the poppet 8 against the seat 14 has a shape in which the outer diameter on the poppet side is smaller than the outer diameter on the adjustment screw 15 side.