SLIDE VALVE

• US 20160040788A1
• Filed: 06/16/2015
• Published: 02/11/2016
• Est. Priority Date: 08/06/2014
• Status: Active Grant

• Current Assignee: Shimadzu Corporation
• Original Assignee: Shimadzu Corporation
• Inventors: TAGUCHI, Tatsuhiro, KOGAME, Masahito
• Granted Patent: US 10,012,316 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F16K 1/18 with pivoted discs or flaps
• CPC Class Codes: F16K 1/20 with axis of rotation arranged externally of valve member
• CPC Class Codes: F16K 3/0218 with only one sealing face
• CPC Class Codes: F16K 3/0227 Packings
• CPC Class Codes: F16K 3/04 with pivoted closure members
• CPC Class Codes: F16K 3/207 by means of hydraulic forces

Abstract

A slide valve comprises: a casing having a pair of facing flow channels; a slide plate inserted into and removed from a space between the flow channels; and an annular sealing body slidingly moving in a facing direction of the flow channels inside the casing and coming into contact with the slide plate inserted between the flow channels to bring the slide valve into a closed state. A first sealing member sealing a gap between the sealing body and the inner peripheral wall surface is disposed on an inner peripheral surface of the annular sealing body and a second sealing member sealing a gap between the sealing body and the outer peripheral wall surface is formed on an outer peripheral surface of the annular sealing body.

Claims

1. A slide valve comprising:

a casing having a pair of facing flow channels;

a slide plate inserted into and removed from a space between the flow channels; and

an annular sealing body slidingly moving in a facing direction of the flow channels inside the casing and coming into contact with the slide plate inserted between the flow channels to bring the slide valve into a closed state, wherein

an annular housing section having an inner peripheral wall surface and an outer peripheral wall surface and housing the slidingly moving sealing body is formed on the casing, and

a first sealing member sealing a gap between the sealing body and the inner peripheral wall surface is disposed on an inner peripheral surface of the annular sealing body and a second sealing member sealing a gap between the sealing body and the outer peripheral wall surface is formed on an outer peripheral surface of the annular sealing body.

2. The slide valve according to claim 1, wherein

the sealing body includes

an annular seal ring on which the first sealing member and the second sealing member are disposed, and

an annular piston member which is connected to the seal ring in a slide direction in a stacked state and driven to slide.

3. The slide valve according to claim 2, wherein

a projecting engagement portion is formed on one connection surface of the seal ring and the piston member, and

a recessed engagement portion which is detachably engaged with the projecting engagement portion is formed on the other connection surface of the seal ring and the piston member.

4. The slide valve according to claim 2, wherein

the seal ling is detachably connected to the piston member, and

all of the sealing member, including the first sealing member and the second sealing member, making contact with gas flowing through the flow channels is disposed on the seal ling.

5. A slide valve comprising:

a casing having a pair of facing flow channels;

a slide plate inserted into and removed from a space between the flow channels; and

an annular sealing body slidingly moving in a facing direction of the flow channels inside the casing and coming into contact with the slide plate inserted between the flow channels to bring the slide valve into a closed state, wherein

an annular housing section having an inner peripheral wall surface and an outer peripheral wall surface and housing the slidingly moving sealing body is formed on the casing, and

the sealing body includes

an annular seal ring, and

an annular piston member which is connected to the seal ring in a slide direction in a stacked state and driven to slide.

6. The slide valve according to claim 5, wherein

a projecting engagement portion is formed on one connection surface of the seal ring and the piston member, and

a recessed engagement portion which is detachably engaged with the projecting engagement portion is formed on the other connection surface of the seal ring and the piston member.