Synchronous double-switch valve plate assembly and synchronous double-switch valve core

Abstract

The invention discloses a synchronous double-switch valve plate assembly and a synchronous double-switch valve core. The synchronous double-switch valve plate assembly comprises a moving valve plate and a fixed valve plate, wherein the fixed valve plate is provided with a first water inlet and outlet through hole, a second water inlet and outlet through hole, a third water inlet and outlet throughhole and a fourth water inlet and outlet through hole; the lower surface of the moving valve plate is provided with a first passing water channel and a second passing water channel; the first passingwater channel comprises an A communicating end and a B communicating end; the lower surface, between the A communicating end and the B communicating end, of the moving valve plate is a first sealingsurface; the second water channel includes a C communicating end and a D communicating end; the lower surface, between the C communicating end and the D communicating end, of the moving valve plate isa second sealing surface; the lower surface, between the A communicating end and the D communicating end, of the moving valve plate is a third sealing surface; and the lower surface, between the B communicating end and the C communicating end, of the moving valve plate is a fourth sealing surface. The valve plate assembly has good pressure resistance, simple sealing structure, small torque required during rotating and low overall cost, and is convenient to popularize.

Description

Technical field [0001] The invention relates to a valve core, in particular to a synchronous double-switch valve disc assembly and a synchronous double-switch valve core. Background technique [0002] The switch spool is a device used to control the water flow. When the switch spool is closed, the water inlet pressure acts on the fixed valve plate, so that the movable valve plate receives a force that separates from the fixed valve plate under the action of water pressure. The maximum water pressure that the switch spool can withstand in the closed state is its pressure resistance. National standards have requirements for the pressure resistance of the switch spool. When the pressure resistance of the switch spool is low, if the inlet water pressure is high, the moving valve plate and the fixed valve plate will be separated, and the switch spool will burst open. The spool cannot be used. [0003] The Chinese patent with the patent number 201820148045.7 discloses a synchronous du...

AI Technical Summary

Problems solved by technology

When the reverse water inlet is closed, that is, when 51d and 51c enter water, the top surfaces of 42a and 42b will be affected by the pressure of the water inlet, and the top surfaces of 42a and 42b are much larger than the cross-sectional area of ​​the water inlet and outlet holes, so at this time the valve Core pressure resistance is poor

This kind of spool has good pressure resistance only when water is flowing in the forward direction, and the pressure resistance of the spool is poor when the water is flowing in the reverse direction

[0008] At the same time, if the adjacent water enters, the two adjacent water inlet and outlet holes are respectively connected with the two water inlet pipes. When the valve core is in the closed state, there must be a top surface of the water tank that is affected by the water inlet pressure. At this time The moving valve plate is subject to a large force of detachment from the fixed valve plate, and the overall pressure resistance of the valve core is poor. When the water pressure is high, the valve core will burst open, and the water filling function cannot be realized.

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