JPH0274671U

JPH0274671U -

Info

Publication number: JPH0274671U
Application number: JP15533788U
Authority: JP
Priority date: 1988-11-28
Filing date: 1988-11-28
Publication date: 1990-06-07

Description

[Brief explanation of drawings]

第１図および第２図は本考案の一実施例を示す
粉体用真空バルブの断面図であり、第１図は閉の
状態、第２図は開の状態を示す。１……ケーシング、２……粉体通路、４……端
部開口、５……真空バルブ、１２……粉体遮断バ
ルブ、１５……すき間、１６……内筒、１７……
外筒、１８……中空短管、２１……粉体。 1 and 2 are cross-sectional views of a powder vacuum valve showing an embodiment of the present invention, with FIG. 1 showing the closed state and FIG. 2 the open state. DESCRIPTION OF SYMBOLS 1... Casing, 2... Powder passage, 4... End opening, 5... Vacuum valve, 12... Powder cutoff valve, 15... Gap, 16... Inner cylinder, 17...
Outer cylinder, 18... Hollow short tube, 21... Powder.

Claims

[Claims for Utility Model Registration] A gate-type vacuum valve is provided at the end opening of the casing that forms the powder passage, and a powder shutoff valve is provided in the part of the casing upstream of the passage from the vacuum valve, The casing on the downstream side of the passageway from the body isolation valve is made up of an inner cylinder forming a powder passage so as not to narrow the passage cross-sectional area of the powder passage, and an outer cylinder provided on the outer periphery of the inner cylinder. It has a double cylinder structure, and can slide along the inner surface of the outer cylinder in the gap between the inner cylinder and the outer cylinder, and when the vacuum valve is opened, it passes through this valve position and opens the end opening. A vacuum valve for powder, comprising a short hollow tube that protrudes from a casing and retracts into the gap when the vacuum valve is closed.