Operation Manual for 802 Series Valve Electric Device

·Introduction

The 802 series valve electric device is suitable for 90% operation of small and medium-sized butterfly valves and ball valves. Rotary valves and other similar equipment are used as angular stroke electric actuators. The 802 series valve electric devices are flexibly designed to meet the needs of different control systems and different working environments

·Features

▲ The integrated design of the transmission mechanism enables the product to have a smaller volume and concise appearance

▲ Sealing measures are provided for all platform positions, and the housing protection level can reach U068 (GB208-84)

▲ Output torque: 100Nm - 12000Nm,

▲ Easily adjustable stroke control mechanism

▲ Fully automatic manual/electric switching without switching handle.

▲ Various designs to meet different needs: explosion-proof, integral, adjustable, etc

▲ Connection size, output performance, and electrical wiring can be customized according to user needs

·Structural motor t Valve specific motor with a rated operating time of 10 minutes, installed outside the box

The main transmission t is composed of a primary spur gear pair, a primary worm gear, and a planetary gear train with small tooth difference. The output shaft drives the valve stem. The 8023/3011 is equipped with a secondary spur gear reducer under the 8023 base number. The travel control t is a cam mechanism, and the camshaft is synchronized with the output shaft. Two microswitches are provided in each switching direction to control the torque. The axial movement of the worm equipped with butterfly springs is utilized to control the torque, The worm movement, which is proportional to the output torque of the output shaft, is converted into a torque shaft through a rack and pinion structure. The rotating torque shaft is equipped with a cam, and a microswitch is provided in the switching direction accordingly. The mechanical limit switches have limit screws in both directions, and the transmission shaft has an adjustable operating range of 80- 100。 Manual and electric switching t automatic switching mechanism without switching handle. The junction box t basic product is equipped with a separate junction box. The integral electrical control box t is a sealed expansion electrical box that replaces control components such as junction box locators to complete various control functions.

·Installation

It is allowed to install the electric device of the valve at any position, but it must be noted that the motor should be in a horizontal position as much as possible. If a certain situation restricts the motor from having to tilt, the shaft extension of the motor should be tilted downward as much as possible to prevent lubricating oil from accidentally entering the interior of the motor. Before connecting the electric device to the valve, it is necessary to check whether the connecting plate and shaft hole size of the electric device match the connection size of the valve.

·Installation steps

Place the valve stem and key together in the output shaft hole of the electric device, and then fasten the connecting plate of the electric device and the flange of the valve with bolts

Remove the box cover and junction box cover of the electric device.

3. Thread the power cable and control cable through the inlet hole of the junction box into the terminal block, connect the electrical control diagram and terminal number, and connect the core wire of the cable to the corresponding terminal. The following two steps should be noted by the user

4. Turn the handwheel and open the valve to the open position of about 500

5. Connect the power supply and check whether the "ON" and "OFF" buttons and indicator lights in the control room are consistent with the rotation direction of the valve. If there is any inconsistency, adjust the phase sequence of the power supply to make it consistent.

·Stroke control mechanism adjustment

The purpose of the adjustment is to enable the cam in the travel control mechanism to accurately actuate the microswitch when the valve reaches the required 'fully closed' and 'fully open' positions, thereby cutting off the power supply to the motor and turning on the power supply to the indicator light before cutting off the power supply to the motor

1. Turn the handwheel to bring the valve to the "fully closed" position. 2. Turn the knob clockwise

2. Count the third cam from top to bottom so that it just touches the 1GXK microswitch (hear the "click" sound), and then tighten the set screw on the cam

Open the valve to about 50% of the open position, electrically close the valve, check whether the stop position of the wide door closure meets the platform requirements, and slightly adjust the cam according to the above method until it meets the platform requirements.

4。 Turn the lower cam in Figure 2 clockwise to slightly advance the third cam and touch the 2GXK microswitch, then tighten the set screw on the cam

5. Open the valve to the "fully open" position, and turn the first cam in Figure 5 counterclockwise, counting from top to bottom, to make the cam accurate

Touch the 1KXK microswitch with the same method as described in Article 2 and Article 3 above.

6. Turn the second cam in the cam 2 counterclockwise from top to bottom to slightly advance the first cam and touch the 2KXK microswitch, then tighten the set screw on the cam

After the above adjustment is completed, power on and repeat the inspection 1-2 times