Improved on-off device for time-delay self-closing urinal flushing valve

Abstract

The invention discloses an improved on-off device for a time-delay self-closing urinal flushing valve. The on-off device is arranged in a control channel of the urinal flushing valve, is controlled to open and close by a control device, and consists of a pair of ceramic disks matched in a sealing way; a ceramic fixed disk is fixed on a valve seat, and a ceramic moving disk is controlled to move in the control channel by the control device; the valve seat is provided with a threaded hole; a copper support ring fixes the ceramic fixed disk and is screwed in the threaded hole; and a seal ring is arranged between the ceramic fixed disk and the copper support ring for sealing and positioning. The whole on-off device is convenient to machine; the ceramic has the advantages of wear resistance and high temperature and low temperature resistance, so the service life of the on-off device is long; the on-off device can be applied to the condition of high water pressure or low water pressure; the noise is small; and by the fixing mode of the ceramic fixed disk, the positioning is more firm, and the on-off device is convenient to machine and easy to maintain.

Description

technical field [0001] The invention relates to a flushing valve, in particular to an improved opening and closing device of a delay self-closing toilet flushing valve. Background technique [0002] There are many types of time-delayed self-closing urinal flush valves, such as angle type, straight type, oblique type, horizontal type, four-way type, foot valve, urinal flush valve and other styles. The following structure is as follows: figure 1 The delay self-closing urinal flush valve shown is an example: it consists of valve seat 1, water inlet channel 2, delay channel 3, control channel 5 controlled by control device 4, and water outlet channel 6. The control channel 5 There is an opening and closing device 7 inside, and the opening time of the opening and closing device 7 is controlled by a delay control device 8. When there is no external force interference, the valve is in a normally closed state. At this time, the pressure in the control channel 5 and the outside world...

AI Technical Summary

Problems solved by technology

Therefore, in response to the above defects, the inventor has made corresponding improvements. The opening and closing device is composed of a pair of ceramic flaps that are sealed and fitted, wherein the ceramic fixed flap is fixed on the valve seat, and the ceramic movable flap is controlled by the control device. Move in the control channel; the fixing method of the ceramic fixed flap and the valve seat is: a threaded hole is provided on the valve seat, a copper support ring adheres to the ceramic fixed flap with colloid and screwed into the threaded hole Among them, the ceramic fixed flap, the copper support ring, and the inner wall of the valve seat are all glued and positioned by colloid. The disadvantage of the above structure is that it is difficult to process, easy to damage, and inconvenient to maintain.

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