Electric sewage gate valve Shuoxiang valve production and sales

Introduction to Shuoxiang Valve Electric Gate Valve

1Overview of Shuoxiang Valve Electric Gate Valve Products

The electric gate valve of Shuoxiang Valve is an automated control valve that uses an electric actuator to drive the valve stem and drive the gate to move vertically up and down, thereby achieving the connection or disconnection of pipeline media. It is widely used in industrial fields such as petroleum, chemical, power, metallurgy, municipal water supply and drainage, and pharmaceuticals. It is particularly suitable for working conditions that require full on or full off control of the medium, and is one of the key equipment for achieving fluid control automation.

Core working principle:After receiving control signals (such as DC 24V or AC 220V switch signals), the electric actuator drives the internal gear mechanism, converting the rotational motion of the motor into linear motion of the valve stem. When the valve stem is raised, the gate rises, the valve opens, and the medium flows; When the valve stem descends, the gate presses into the sealing surface of the valve seat, the valve closes, and the medium is cut off.

IIStructure and composition of Shuoxiang valve electric gate valve products

Electric gate valves mainly consist of two parts:Upper electric actuatorandLower gate valve body.

1. Electric actuator

• motorThe power source is usually an induction motor with high torque and low inertia.

• Deceleration mechanism:Gear set, used to reduce motor speed and increase output torque.

• Travel control mechanism:Accurately set the end positions of the valve's "open" and "close" through cam and micro switch to prevent motor overload.

• Torque protection mechanism:When the valve gets stuck or the torque exceeds the set value, the torque switch will activate to cut off the power supply, protecting the valve and actuator from damage. This is a crucial overload protection function.

• Hand electric switching mechanism:During power outage or debugging, it can be switched to manual mode and opened and closed through the handwheel.

• Position indicator:Display the current on/off status of the valve (open, closed, or neutral position).

• Junction box:The protection level is usually IP67, used for connecting power and control lines.

2. Gate valve body

• Valve body and valve cover:The pressure bearing body can be made of materials such as cast iron, cast steel, stainless steel, etc. according to the medium.

• Gate:Core opening and closing components. Common types includeRigid gateandElastic gateThe elastic gate can slightly deform and compensate for the wear of the sealing surface, resulting in better sealing performance.

• Valve stem:Connect the actuator and gate to transmit power. There are usually open stem and concealed stem designs, and electric gate valves are mostly open stem structures for easy observation of valve status.

• Valve seat:Forming a sealing pair with the gate, the sealing surface material is often welded with hard alloy to improve wear resistance and corrosion resistance.

• Packing box:Use graphite, polytetrafluoroethylene and other sealing fillers to form a dynamic seal around the valve stem to prevent medium leakage.

IIIMain functions of Shuoxiang valve electric gate valve

1. Two position cutting function:Realize full open (flow) and full close (cutoff) control of the pipeline, with low flow resistance and reliable sealing.

2. Remote automation control:Remote control can be achieved by issuing instructions through control buttons, PLC, and DCS systems in the control room.

3. Signal feedback function:The actuator can output passive contact signals such as "fully open", "fully closed", and "fault" of the valve for monitoring the valve status in the central control room.

4. Intelligent bus control (optional):Some models support fieldbus protocols such as Profibus DP and Modbus, enabling more complex control and diagnostic functions.

4Shuoxiang Valve Electric Gate Valve Product Features

1. Effortless and efficient operation:Electric drive replaces heavy manual operation, especially suitable for valves with large diameters, high pressures, or inconvenient installation positions.

2. Excellent sealing performance:The linear sealing structure of gate valves has a self sealing effect when closed, with minimal wear on the sealing surface and low leakage rate.

3. Low flow resistance coefficient:When the valve is fully opened, the channel is straight through, the gate is lifted, the flow resistance of the medium is small, and the energy-saving effect is good.

4. Double protection mechanism:possessTravel control(Control switch position) andtorque protection(Control the closing force), effectively preventing damage to the actuator and valve.

5. Easy maintenance:Adopting standard design, the components have strong universality. The clear pole structure is easy to observe and maintain.

6. Wide applicability:Suitable for various media such as water, steam, oil, gas, etc., by selecting different valve bodies, sealing materials, and pressure levels.

5Precautions for Installation and Use of Shuoxiang Valve Electric Gate Valve

1. Pre installation inspection:Confirm whether the valve model, pressure rating, and material meet the operating requirements; Remove welding slag and debris from the pipeline.

2. Installation direction:Gate valves generally do not have strict requirements for installation direction, but it is necessary to ensure that the flow direction of the medium is consistent with the arrow indication on the valve body (usually bidirectional sealing, but it is recommended to install according to the markings). The valve stem should be installed vertically upwards as much as possible, and the inclination angle should not exceed the specified value.

3. Leave room for operation:Ensure there is sufficient space around the actuator for wiring, operation, and later maintenance.

4. Electrical wiring:Operate according to the wiring diagram by a professional electrician to ensure that the power supply voltage is consistent with the rated voltage of the actuator. Reliable grounding and waterproof sealing of cable entrances.

5. Debugging:Before use, the valve must be manually opened and closed to the middle position, and then powered on to set the stroke and torque, ensuring accurate action and effective protection.

6. Usage environment:Avoid using in explosive, highly corrosive environments or temperatures unless using products with special protection levels.

VIMaintenance and upkeep of Shuoxiang valve electric gate valve

Regular maintenance is the key to ensuring the long-term and reliable operation of valves.

1. Daily maintenance:

2. cleanKeep the valve and actuator clean on the outside.

• On-Site Inspection:Check for external leaks, abnormal noise, and vibration.

• Electrical inspection:Check if the junction box seal is intact and if the cables are aging.

3. Regular maintenance (usually every 6-12 months or depending on operating frequency):

4. Packing box compression:If there is a slight leakage at the valve stem, the packing gland nut can be evenly tightened appropriately. Do not tighten too tightly to avoid increasing the friction of the valve stem.

5. Lubrication:According to the instructions, regularly add the specified lubricating grease to the valve stem, bearings, and actuator transmission mechanism.

6. Sealing performance inspection:Regularly conduct sealing tests to check for internal leakage.

7. Common faults and solutions:

8. External leakage (valve stem):Tighten or replace the packing.

9. External leakage (valve body connection):Tighten bolts or replace gaskets.

10. Internal leakage (not tightly sealed):Check whether there is erosion, damage, or foreign matter stuck in the sealing surface and valve seat of the gate. Disassemble, grind or replace damaged parts.

11. Valve does not operate:Check if the power supply is normal, if the motor is burnt out, and if the travel/torque switch is malfunctioning.

• Internal and external leakage:

• Motor overheating:Check the power supply voltage, frequent operation, excessive torque setting, and valve jamming.

Important Notice:Before carrying out any maintenance or disassembly repairs, it is essential toCut off the power and gas supply, install the pipeline systemRelease pressure to atmospheric pressureAnd ensure that the medium has been emptied and cooled down to a safe state.