The invention discloses an electrically controlled pneumatic
shunt valve. The electrically controlled pneumatic
shunt valve comprises an air inlet
pipe, an air opening, rubber membranes, a tension spring, a
piston, a water outlet, a plugging plate, a filter screen, a water inlet
pipe, a manual plug, two-position three-way magnetic valves, a valve body, a shell and a bottom plate, wherein the three two-position three-way magnetic valves are connected in series through the air inlet
pipe and mounted on the air opening of the shell; the valve body is fixed in an inner cavity of the shell; the
piston is supported and suspended on the valve body through the tension spring, the upper end of the
piston is sealed through one
rubber membrane so that the upper end of the piston and the shell can form an
air chamber, and the lower end of the piston is sealed through the other
rubber membrane pressed by the plugging plate so that the lower end of the piston and the valve body can form a small cavity; the valve body is provided with the water outlet in the position of the small cavity; the bottom of the valve body is sealed through the bottom plate so that a master cavity can be formed; the filter screen stretches cross the master cavity of the valve body, one end of the filter screen is connected with the valve body through the manual plug, and the other end of the filter screen is fixedly connected with the valve body through the water inlet pipe. By adoption of a two-position three-way
magnetic valve control system, the electrically controlled pneumatic
shunt valve is large in flow, easy and convenient to clean and convenient to
mount, the service life is longer than five years, and cost is reduced by 50%.