What accessories do I need for an electric ventilation butterfly valve?

The electric pinch valve produced by Wuhu Naide Hose Valve Industry has excellent wear resistance and anti-corrosion performance, and its lining of special rubber has excellent performance in various properties. With wear-resistant, anti-corrosion and high-temperature resistant rubber as the lining layer, the physical and chemical properties of the rubber itself reduce the effect of the pipeline conveying medium on the external structure, such as impact force, corrosion, etc., due to the cushioning effect of rubber, greatly prolong the service life of the pipeline, reduce the cost of users. Wuhu Naide hose valve industry has nearly 20 years of valve research and production experience, and has close cooperation with major domestic mines and power plants.

The electric ventilation butterfly valve is made of the same material as the valve body and processed into a sealing ring, and adopts electric or pneumatic transmission. Its applicable temperature depends on the selection of the valve body, the nominal pressure, and is generally suitable for industrial, metallurgical, environmental protection and other pipelines for ventilation and adjustment of medium flow. Depending on the control and requirements, the following accessories are available:

1. Cut-off accessories: single electronically controlled solenoid valve, double electronically controlled solenoid valve, limit switch feedback.

2. Adjustable accessories: electrical positioner, pneumatic positioner, electric converter.

3. Air source treatment accessories: air filtration pressure reducing valve, air source treatment triplet.

4. Manual mechanism: HVSD manual operation mechanism.

Specifically, let's analyze the difference between it and ordinary butterfly valves, from the concept, structural characteristics, use, principle and installation instructions of ventilation butterfly valves.

1. Introduction of electric ventilation butterfly valve:

Electric general butterfly valve is used in chemical, building materials, power stations, glass and other industries in the ventilation, environmental protection engineering dust-containing cold air or hot air gas pipeline, as a gas flow regulation or cut off pipeline control device, this type of valve is generally used in the pipeline for horizontal installation, butterfly valve is a simple structure of the control valve, but also used for low-pressure pipeline medium switch control, ventilation butterfly valve is a non-closed butterfly valve, unlike the ordinary imported electric butterfly valve requires zero leakage sealing, mainly divided into: Weidun VTON ventilation butterfly valve, Weidun VTON electric ventilation butterfly valve and explosion-proof butterfly valve.

2. Structural characteristics of electric ventilation butterfly valve:

1. It is designed and manufactured in the new structural form of centerline disc plate and short structural plate welding, with compact structure, light weight, easy installation, small flow resistance, large circulation to avoid the influence of high temperature expansion, and light operation.

2. There is no connecting rod in it: bolts, etc., which works reliably, can be installed in multiple stations, and is not affected by the flow direction of the medium.

3. Electric ventilation butterfly use:

Electric ventilation butterfly valve is a kind of non-enclosed butterfly valve, which is widely used in the production process of building materials, metallurgy, mining, electric power and so on. The medium temperature is 150 degrees. Nominal pressure is used on the pipe to connect the opening and closing or adjustment.

Fourth, the working principle of electric ventilation butterfly:

The Vton ventilation butterfly valve is divided into manual and electric transmission, which can be driven by an electric motor or turbine to drive the actuator, so that the butterfly plate can rotate freely within the range of 90 degrees to achieve the purpose of opening and closing or adjusting the medium flow.

5. Key points of installation of electric ventilation butterfly:

1. The height of the installation position, the direction of the inlet and outlet must meet the design requirements, pay attention to the direction of the medium and the direction of the arrow marked by the valve body, and the connection should be firm and tight.

2. Weidun VTON electric ventilation butterfly valve must be visually inspected before installation.

The electric ventilation butterfly valve is designed and manufactured in a new structural form of centerline disc plate and short structural steel plate welding, which is compact in structure, light in weight, easy to install, small in flow resistance, large in circulation, avoids the influence of high temperature expansion, and is light in operation. There are no connecting rods, bolts, etc. in the body, and the work is reliable and has a long service life. It can be installed in multiple stations regardless of the direction of the medium.

The electric butterfly valve is composed of an electric actuator and a butterfly valve, and its installation will be a little more complicated than that of a manual valve, so it is necessary to elaborate on the installation precautions with an electric butterfly valve (refer to the installation instructions of the electric butterfly valve of Vton of Weiton).

1. Before the installation of the imported electric butterfly valve with imported electric actuator, confirm whether the product performance of the Vton butterfly valve and the direction of the medium arrow are consistent with the moving conditions, and clean the inner cavity of the valve, and do not allow impurities and foreign substances attached to the sealing ring and butterfly plate, and never close the butterfly plate before cleaning, so as not to damage the sealing ring.

2. It is recommended to use the special flange for disc valve for the installation of electric butterfly valve, that is, the HGJ54-91 socket welded steel flange.

3. The imported electric butterfly valve is installed in the pipeline, and the position is vertical, but it cannot be reversed.

4. The electric butterfly valve with imported electric actuator needs to be adjusted in use, and it needs to be equipped with an imported signal adjustment electric actuator.

5. For manual butterfly valves that are opened and closed more times, open the worm gear box cover in about two months to check whether the butter is normal, and an appropriate amount of butter should be maintained.

6. Check the compression of each connecting part, which not only ensures the tightness of the packing, but also ensures the flexible rotation of the valve stem.

7. Carefully check whether the use of the valve is consistent with its performance specifications; (temperature, pressure) 2. Check whether there are debris on the valve channel and sealing surface, and remove it in time;

8. After unpacking, the imported electric butterfly valve should be installed in time, and do not loosen any fastening screws or nuts on the valve at will;

9. Multi-level metal hard seal electric butterfly valve, cast steel soft seal electric butterfly valve with standard flange, DN200 caliber above the center line soft seal clamp type electric butterfly valve must be equipped with special flange;

10. Installation and commissioning personnel should carefully read the instruction manual and pneumatic and electric actuator manuals, and strictly follow the instructions and wiring diagrams for installation, operation, commissioning and wiring;

11. When the user requires pressure test, be sure to use the flanges at both ends to clamp the clamp or test the pressure on the valve pressure test table;

12. Before the installation of the imported electric butterfly valve, it is advisable to be in a closed state, and the valve channel should be blocked with a cover plate during welding; Prevent particles and debris from rubbing the sealing surface.

Thank you for the installation manual support provided by VTON engineers!

The installation of the butterfly valve is very simple, pay attention to the good flange eye and do not pretend to be crooked.

However, special attention should be paid to the wiring operation of the actuator, which will have a wiring indication diagram on the actuator, or an instruction manual provided with the delivery. I have encountered this kind of situation before, the electrician in the unit connected the positive and negative wires in the opposite direction, and the actuator was able to use normally at that time, and after using it for a period of time, the electric board burned.

This butterfly valve is a non-enclosed butterfly valve, which is widely used in the production process of building materials, smelting and mining, mining, electric power and other production processes with a medium temperature of 300 nominal pressure grinding for pipelines, which is used to connect, open and close or adjust the medium quality delay.

The electric ventilation regulating butterfly valve is mechanically connected with the ventilation butterfly valve by an electric actuator, which is suitable for the adjustment of various gases, gases and air duct processes.