Slide valve
First Claim
1. A slide valve comprising:
- a body having a flow path and a rotary shaft;
a slide plate having a proximal end, provided within the body and between a closing position preventing a flow on the flow path and an open position permitting the flow, the slide plate being disposed perpendicularly relative to a flow path axis and movable horizontally, the rotary shaft having a communication hole and an air discharge path at a portion thereof to be connected to the proximal end of the slide plate, the slide plate having an air supply and discharge port and an air discharge port;
a valve element incorporated in the slide plate and movable in a direction of the flow path axis to switch between the closing position and the open position of the slide plate, wherein the proximal end of the slide plate is detachably attached to the rotary shaft of the body; and
a detachable O-ring for simultaneously sealing the communication hole, air discharge path, air supply and discharge port, and air discharge port.
1 Assignment
0 Petitions
Accused Products
Abstract
A slide valve is provided, in which the conductance in the minimum region is controllable with high accuracy to enable stable control, a slide plate is prevented from plastically deforming to acquire good controllability of the minimum flow rate, and it is possible to detach a valve element and an air drive portion integrally with the slide plate, thereby facilitating the maintenance. The slide valve includes a body having a flow path, a slide plate provided within the body and between a closing position preventing a flow on the flow path and an open position permitting the flow, disposed perpendicularly relative to a flow path axis and movable horizontally or on a straight line, and a valve element incorporated in the slide plate and operated in a direction of the flow path axis to switch between the closing position and the open position of the slide plate by air cylinder drive. The slide plate has an upper surface and a lower surface that form small clearances in cooperation with the body when the valve element is in the open position, thereby enabling control of the minimum conductance. When the valve element has been in the closing position to induce a pressure difference load, the slide plate when receiving the pressure difference load is not plastically deformed.
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Citations
7 Claims
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1. A slide valve comprising:
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a body having a flow path and a rotary shaft; a slide plate having a proximal end, provided within the body and between a closing position preventing a flow on the flow path and an open position permitting the flow, the slide plate being disposed perpendicularly relative to a flow path axis and movable horizontally, the rotary shaft having a communication hole and an air discharge path at a portion thereof to be connected to the proximal end of the slide plate, the slide plate having an air supply and discharge port and an air discharge port; a valve element incorporated in the slide plate and movable in a direction of the flow path axis to switch between the closing position and the open position of the slide plate, wherein the proximal end of the slide plate is detachably attached to the rotary shaft of the body; and a detachable O-ring for simultaneously sealing the communication hole, air discharge path, air supply and discharge port, and air discharge port. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification