Throttling and filtering valve device arranged at water inlet end of cold and hot water mixing valve

The utility model relates to a throttling and filtering valve device arranged at the water inlet end of a cold and hot water mixing valve. According to the throttling and filtering valve device, a right-angle type water inlet pipe I and a straight-through type water inlet pipe 1 are each provided with a regulating valve pipe cavity F, a regulating valve element 2, a thread sleeve 3 and a filter screen 4. Each regulating valve element 2 can rotate in the corresponding regulating valve pipe cavity F, and each filter screen 4 is inserted into the corresponding regulating valve element 2 so that water entering from water inlets L can enter the mixing valve only after being throttled by the regulating valve elements 2 and filtered by the filter screens. When the regulating valve elements 2 rotate within a certain angle range, closing, opening and regulating of the inlet water flow can be realized. When an external water inlet master valve is closed, the thread sleeves 3 are screwed out, the regulating valve elements 2 are taken out, and then the filter screens can be drawn out and cleaned conveniently. Through further improvement on the basis, the valve device can close the valve automatically on the condition that the external master valve is not closed, and the filter screens can be cleaned or replaced. Thus, the throttling and filtering valve device arranged at the water inlet end of the cold and hot water mixing valve is simple in structure, easy to operate, low in cost and wide in application range.