1. Conditions of use

EM type electric directional valve is suitable for dry oil centralized lubrication systems with a nominal pressure of 40 MPa.Dry thin oil lubricationThe pressure grease at the single-line outlet of the pump is alternately sent out through the main pipe I or II, forming a complete two-line terminal dry oil centralized lubrication system.

The reversing valve is an integrated reversing control device driven by a micro AC motor, which drives the eccentric linkage mechanism through a reduction drive to control the movement of the sliding core to open and close the oil supply pipeline or change the direction of the oil supply; it is responsive and It opens and closes quickly and operates reliably. It can be used in conjunction with the electric control box to automatically control the lubrication system.

3. Working principle

EM type electric directional valve is mainly composed of electric motor, reduction mechanism, eccentric linkage mechanism, strong spring mechanism, two-position four-way valve, limit switch, pressure gauge, etc.

After the motor is decelerated by the worm gear, the eccentric 2 drives the connecting rod 3 to perform linear reciprocating motion. Due to the action of the spring mechanism 4 linked to the end of the connecting rod, the sliding core rod 6 in the four-position two-way valve 5 produces a rapid push-pull action, thereby changing the connection mode of each oil port of the four-position valve 5 and achieving the liquid flow. The purpose of reversal. At this time, the eccentric wheel rotates 180° to another dead center position, and the limit switch 7 is triggered. The limit switch can send a pulse signal to stop the operation of the valve motor, completing a working process. The pressure gauge 8 is installed on the top of the protective cover 9 for monitoring the working pressure in the valve.

7. Instructions for use

The valve should be installed at the front end of the controlled main pipeline of the system, and located in a ventilated, dry, easy-to-inspect location without interference from moving mechanisms. Before use, the outer cover must be opened and 50# mechanical oil added to the reduction box to the specified liquid level.