Positive negative pressure relief valve of low level spring

• Main Authors: NIU XINSHENG, WANG LIN, WANG ZHONGXING, JI ZHIJUN
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2016
• 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 utility model discloses a positive negative pressure relief valve of low level spring, including the valve body, valve clack and the valve gap that set gradually, the one side that lies in the valve body on the valve clack is equipped with first sealing washer, is equipped with the malleation spring between valve clack and the valve gap, and the malleation spring is used for adjusting the set pressure of relief valve, it all adopts threaded connection to reach between valve body and jar body interface between valve gap and the valve body, be equipped with the negative pressure case in the valve clack, the upper contact position department in with the valve clack of negative pressure case is equipped with the second sealing washer, and the cover is equipped with the negative pressure spring on the negative pressure case, and the negative pressure spring is pressed on the valve clack through two nuts, be equipped with between valve gap and the valve body and be used for the slotted hole that the malleation