JPS6439976U

JPS6439976U -

Info

Publication number: JPS6439976U
Application number: JP13556787U
Authority: JP
Priority date: 1987-09-07
Filing date: 1987-09-07
Publication date: 1989-03-09

Description

[Brief explanation of the drawing]

第１図は本考案の逃がし弁の実施例の縦断面図
、第２図は第１図の―断面矢視図、第３図は
弁座を漏斗形状とした弁筐体、第４図は弁座が弁
体によつて叩かれて変形した状態、第５図は第４
図に示す弁座の変形によつて弁機能に支障が起こ
らない弁筐体の形状を示し、第６図は従来一般に
行なわれている逃がし弁の縦断面図、第７図は開
弁開始時の弁体の振動を防止した従来構成の逃が
し弁の縦断面図、第８図は開弁開始時の弁体の振
動を防止した逃がし弁であつて本出願人が先に提
案したものを示す図、第９図は第８図の構成の逃
がし弁の開弁後の圧力降下を示す図である。符号の説明：１……弁筐体、２……弁体、２―
１……円錐部分、２―２……柱状部分、２―３…
…弁体案内部、２―４……流体の流路、３……流
入路、４……弁室、５……弁座、６……スプリン
グ。 Fig. 1 is a vertical cross-sectional view of an embodiment of the relief valve of the present invention, Fig. 2 is a cross-sectional view taken along the arrow - in Fig. 1, Fig. 3 is a valve housing with a funnel-shaped valve seat, and Fig. 4 is a longitudinal sectional view of an embodiment of the relief valve of the present invention. Figure 5 shows the state in which the valve seat has been deformed by being hit by the valve body.
The figure shows the shape of the valve casing in which the valve function is not affected by the deformation of the valve seat, and Figure 6 is a vertical cross-sectional view of a relief valve commonly used in the past, and Figure 7 is when the valve starts opening. FIG. 8 is a longitudinal cross-sectional view of a relief valve with a conventional structure that prevents vibration of the valve body, and FIG. 8 shows a relief valve that prevents vibration of the valve body when the valve starts opening, which was previously proposed by the applicant. 9 are diagrams showing the pressure drop after the relief valve of the configuration shown in FIG. 8 is opened. Explanation of symbols: 1...Valve housing, 2...Valve body, 2-
1...conical part, 2-2...column-shaped part, 2-3...
... Valve body guide section, 2-4 ... Fluid flow path, 3 ... Inflow path, 4 ... Valve chamber, 5 ... Valve seat, 6 ... Spring.

Claims

[Scope of utility model registration request]

A valve housing 1 has a fluid inflow path 3 and a valve chamber 4 formed therein, and a valve seat 5 is formed at the opening end of the inflow path 3 to the valve chamber 4, and the valve housing 1 cooperates with the valve seat 5. In the relief valve, the relief valve includes a valve body 2 that acts as a valve, and a spring 6 that biases the valve body 2 in a direction to seat the valve body 2 on the valve seat 5. a conical portion 2-1 that cooperates with the seat 5 to perform a valve action; a columnar portion 2-2 that is adjacent to the upstream side of the conical portion 2-1 and cooperates with the inflow passage 3 to form a piston valve; A fluid flow path 2-4 is formed adjacent to the upstream side of the columnar portion 2-2, and a valve body guide portion 2-3 slides along the inner surface of the inflow path 3. valve.