Adjusting valve capable of adjusting prestress

• Main Author: YIN JIANXIONG
• Format: Patent
• Language: Chinese; English
• Published: 25.12.2020
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The invention discloses an adjusting valve capable of adjusting prestress. The adjusting device is composed of a valve seat, a valve element, a spring and a valve sleeve, wherein a valve seat throughhole penetrating through the valve seat is formed in the valve seat; an internal thread is arranged on the inner wall of one end, close to a water outlet end, of the valve seat through hole; correspondingly, a matched external thread is arranged outside the valve sleeve; a positioning flange is arranged on the inner wall of the valve seat between the internal thread of the valve seat and a water inlet end, and the aperture of the valve seat through hole between the positioning flange and the water inlet end is gradually increased; and a plurality of auxiliary water channels which are sunken outwards are arranged on the inner wall of the valve seat through hole between the positioning flange and the water inlet end. A certain pressure loss is generated for high-pressure water supply of different pressure, and relat