Flat gate valve with multiplexed output adjustment

Abstract

The invention discloses a flat gate valve with multiplexed output adjustment. The flat gate valve with multiplexed output adjustment comprises a valve body, a valve cover arranged on the valve body, and a flow channel arranged in the valve body. An upper cavity and a lower cavity communicating with the flow channel are arranged in the valve body; the upper cavity is located above the flow channel;the lower cavity is located below the flow channel and is located right below the upper cavity; a valve rod extending into the upper cavity is arranged on the valve cover; a gate plate is fixedly arranged at one end, located in the upper cavity, of the valve rod; a valve seat matched with the gate plate so as to realize sealing is fixedly arranged on the flow channel; a spring is arranged betweenthe valve body and the valve seat; a limiting block is fixedly arranged in the lower cavity; an opening slot is formed in one surface, facing the gate plate, of the limiting block; and an extending part embedded into the opening slot and adaptive to the opening slot is fixedly arranged at a position, facing the limiting block, of a peripheral wall of the gate plate. The flat gate valve provided by the invention has the following advantages and effects of reasonable design, compact structure, convenience in use, and capability of prolonging the service life of the valve.

Description

technical field [0001] The invention relates to a valve, in particular to a flat gate valve with multi-channel output adjustment. Background technique [0002] The slab gate valve is a sliding valve whose closing parts are parallel gates. The closing parts can be single gates or double gates with a stretching mechanism in between. The pressing force of the gates to the valve seat is due to the floating The medium pressure of the gate or floating valve seat is controlled. [0003] The Chinese patent with the notification number CN206708425U discloses a flat gate valve with a new sealing structure, including a valve body, a valve stem, a valve seat and a gate. A flow channel is arranged in the valve body, and the valve stem drives the gate to rotate to control the cutting of the flow channel. and circulation, the valve seat is installed in the flow channel and is tightly matched with the gate plate. An adjustment channel for the valve seat to slide and a spring for returning ...

AI Technical Summary

Problems solved by technology

When the gate is in the closed state, the fluid pressure generated in the flow channel will continue to act on the gate, coupled with the limit fixing force of the bonnet and the valve stem, the gate has a longer force arm, so that the continuous pressure of the fluid Acting on the gate will easily deform the connection between the gate and the valve stem, thus affecting the sealing performance of the valve

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