Integrated pneumatic valve lock

摘要

A pneumatic lock assembly for securing a valve comprises a lock pin engaging a contact surface on a poppet assembly. The head of a poppet creates a sealing relationship with an end of the valve. A guide with a bore extends between the exterior and interior of the valve terminating at a sleeve. The sleeve slidably receives a stem extending from the poppet head. A spring biases a pin, slidably received within the pylon bore, into engagement with a contact surface on the valve stem for securing the valve head in a closed position. The pin may be pneumatically disengaged from the groove by forcing air from a pneumatic power source into a bore in the pin. A cap assembly at the exterior of the valve provides protection for the lock assembly and allows for manual disengagement of the pin from the groove.

主权项

1. A valve comprising:
a valve assembly, comprising:
a valve body including an exterior and an interior, and extending between a proximal end and a distal end;a guide extending from the valve body into the interior of the valve body and terminating at an elongated sleeve;wherein the sleeve extends between a proximal end and a distal end;a longitudinal bore within the sleeve extending between the proximal end and the distal end;a longitudinal bore within the guide extending between a first port at the valve body exterior and a second port at the sleeve bore;a sealing member for sealing the proximal end of the valve body;an elongated stem extending between a proximal end and a distal end, wherein the proximal end is connected to the sealing member and the distal end includes a contact surface;wherein the distal end of the stem is received within the sleeve bore; a lock assembly, comprising:
a lock pin disposed within the guide bore; a spring for biasing the pin into engagement with the contact surface; a cap disposed over an upper portion of the lock pin, wherein the cap is pivotally attached to the exterior of the valve body by a pivot pin; a bar disposed within the cap for biasing against the lock pin; and a releasable safety pin passing through the cap and valve body for preventing the cap from pivoting; and wherein the cap is pivoted away from the valve body to engage the bar with the lock pin to bias the lock pin against the spring and out of engagement with the groove.