Control valve for flow of solids

A flow control valve comprising,

• a body provided with a flow passage therethrough,
• a chamber in the body disposed about and in fluid communication with the flow passage,
• a valve orifice removably disposed in the flow passage upstream and adjacent to the chamber,
• a pair of slides disposed in the chamber downstream of and adjacent to the orifice, the slides being slideable to and away from one another to a closed position and to an open position, respectively, and
• guides in the chamber, the guides and the slides having interfitting tongues and grooves disposed out of direct flow in the flow passage,
• there being a space between the guides at the flow passage whereby any buildup of solids is cleared upon moving the slides to the closed position.

A flow control valve comprising,

• a body provided with a flow passage therethrough,
• a chamber in the body disposed about and in fluid communication with the flow passage,
• a valve orifice removably disposed in the passageway upstream of and adjacent to the chamber,
• a pair of slides disposed in the chamber downstream of and adjacent to the orifice, the slides being slideable to and away from one another to a closed position and to an open position, respectively,
• a flow control port in one of the slides permitting flow therethrough positioned to be closed when the slides are in the closed position and to be progressively opened as the slides are moved away from one another, and
• guides in the chamber, the guides and the slides having interfitting tongues and grooves disposed out of direct flow in the flow passage,
• there being a space between the guides at the flow passage whereby any buildup of the solids is cleared upon moving the slides to the closed position.

A flow control valve comprising,

• a body provided with a flow passage therethrough,
• a chamber in the body disposed about and in fluid communication with the flow passage,
• a valve orifice removably disposed in the flow passage upstream of and adjacent to the chamber,
• a pair of slides disposed in the chamber downstream of and adjacent to the orifice, the slides being slideable to and away from one another to a closed position and to an open position, respectively,
• a flow control port permitting flow therethrough in one of the slides positioned to be closed when the slides are in the closed position and to be progressively opened as the slides are moved away from one another,
• guides in the chamber, the guides and the slides having interfitting tongue and grooves disposed out of direct flow in the passageway,
• the guides being spaced apart from one another adjacent the flow passage whereby any buildup of solids is cleared upon moving the slides to the closed position, and
• an exit liner downstream of and adjacent to the pair of slides operative to center flow in the flow passage downstream of the orifice plate.