Composite dual-supporting double-speed multifunctional valve

Abstract

The invention refers to a valve which is equipped on the pump exit in the pump pipeline system. It has the function of eliminating water hammer, non return, adjusting the flow quantity. It is made up of down valve pocket,valve body, down-up bush,main-valve plate down-ear,main-valve plate, sub-valve plate ear, valve handle, main-valve plate up-ear,up-middle bush,up valve bush,sub-valve bush,sub-valve bush seal surface, main-valve plate small seal surface, main-valve plate discharge orifice, main-valve plate large seal surface. The main-valve plate could use the up-middle bush and the down-middle bush as the first bearing to neatly rotate. The up end and the bond of the valve handle as the external driving device uses the up bearing shaft and the down bearing shaft as the second bearing to bear the valve handle and the sup-valve plate. The rotating center of the valve plate and the sub-valve plate is not coincided with the center of the valve body. The dual-speed dual-bearing and dual-butterfly-plate valve offered by the invention integrate the functions of slow-close, slow-open, flow-reversal proofed, water hammer avoided and flow quantity adjustable. Moreover, it improves the efficiency and reliability of the pipeline system.

Description

technical field [0001] The invention relates to a valve installed on the outlet of the pump in the water delivery pipeline system of the water pump, which has the functions of eliminating water hammer, checking the flow, and adjusting the flow rate. Plate two-speed opening and closing valve. Background technique [0002] In the pipeline system for pumping liquid, when the pump is started, the outlet valve of the pump is required to be closed, and the valve is opened to allow the liquid to flow into the pipeline after the pump starts to operate normally, so as to ensure that the starting current of the motor driving the pump is relatively low when the pump is started. Therefore, an electric control valve should be installed in the outlet section of the pump; when the pump stops running, it is required that the outlet valve of the pump can be closed quickly to cut off the backflow of the liquid. A check valve should be installed, but when the water flow is cut off, the in...

AI Technical Summary

Problems solved by technology

In this way, in order to ensure the safe and normal operation of the pump piping system, at least three devices (electric control valve, check valve, water hammer eliminator) should be installed in the pump outlet section, so the pump outlet section has more equipment and more energy consumption. , There are many fault points, and the maintenance workload is also large. If any one of the devices fails, the entire system will not work normally, which is extremely inconvenient to use and affects the working efficiency of the entire pump pipeline system.

However, the currently used double-speed double-plate control valves share the support of the two valve plates, that is, share the same valve stem as the support. Large control force, poor performance effect in eliminating water hammer, check, adjustment, etc.

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