Shandong Shengya Machinery Co., Ltd. specializing in the production of various types of brick, brick machine, brick machine, hollow brick, pavement brick and other equipment of the old brick factory.
     Cement brick production among multi-stage hydraulic parts electro-hydraulic pilot relief of the majority. Here to talk about the advantages and principles of multi-level mechanism of electro-hydraulic pilot relief valve.
      Relief: the system is to make cement brick excess fluid through the overflow valve to maintain a constant pressure close to its inlet pressure control valve.
Pilot relief: It is defined by the pilot valve and pressure relief valve controls the main valve overflow, an advantage of relatively common pilot relief valve relief valve is: When overflow flow changes, inlet pressure relief valve Pilot It is maintained substantially constant.
Multistage electro-hydraulic pilot relief: the main valve and pilot valve for controlling the pressure in the system, reversing pressure can be controlled by an electromagnetic system multi-level changes.
    Structure and principle:
     A port of hydraulic oil from the inflow in the lower end of the main spool 1 the same time, the damper 2 and 3, and channels 4 and 5, the role of the pilot valve cone 6, when the pressure reaches a predetermined spring 8 is adjusted time pressure, the pilot valve is opened, the control of oil back to the tank cement brick, the main valve pressure drop, the main valve is opened, the hydraulic oil flows from the A port B port into the tank, complete overflow.
Shandong Shengya Machinery Co., Ltd. has been committed cement products machinery development, production and sale of advanced equipment, superb technical expertise and two decades of experience, the company has always been at the forefront of research and development center block molding machine market development Follow the advanced technology at home and abroad, to develop products for different investment needs of users, mainly block making machine, hydraulic tile machine, cement pipe machine, mixer, hanging roller machine, telephone poles machine equipment. At present the country with 19 offices and six overseas plants (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported more than 100 countries and regions.