Exhibition Ceramic Double Gate Valve

Ceramic double gate valveIt is a special valve designed specifically for conveying dry powder materials, using ceramic materials as the core sealing and wear-resistant components. Its structure consists of a valve body, left and right ceramic gate plates, valve stem, spring, and driving device (pneumatic/electric/manual). Ceramic track strips are installed inside the valve body, and the gate plate moves tightly against the track through the bi-directional pre tensioning force of the spring, achieving leak free sealing. When the valve is opened and closed, the gate rises and falls vertically, and the medium channel is cut off or connected through the parallel movement of the double gate. It is suitable for conveying pipelines of high wear powder media such as dry ash, mineral powder, and cement.

Performance Characteristics

Wear resistant and corrosion-resistant: Ceramic materials have high hardness and can resist particle media erosion and acid-base corrosion, with a lifespan far exceeding that of metal valves.

Zero leakage sealing: The self sealing structure of the spring ensures that the gate and valve seat always match, scraping off dirt on the sealing surface and achieving bidirectional zero leakage.

Self cleaning and anti blocking: The eccentric design of the valve body generates material eddy currents during opening and closing, automatically cleaning the accumulated dust in the valve chamber; The bottom drainage system prevents residue accumulation.

Strong thermal shock resistance: Ceramic materials have a low coefficient of thermal expansion and are suitable for working conditions with drastic temperature changes, avoiding sealing failure caused by thermal expansion and contraction.

Flexible opening and closing: The wedge-shaped roller switch mechanism reduces operating torque and supports multiple driving modes including manual, electric, and pneumatic to meet different automation needs.

Easy maintenance: The modular design allows for quick replacement of ceramic gate plates without the need for overall valve replacement, reducing maintenance costs.

Application field

Electric power industry: Pneumatic ash removal system for thermal power plants (including discharge valves for bin pumps, balance valves, exhaust valves, and blockage valves), and ash unloading valves for ash storage.

Mining: Dry mineral powder material transportation pipeline (beneficiation plant, tailings treatment system).

Cement industry: dry powder conveying and discharging process (cement production line, limestone powder processing).

Food industry: flour, starch and other powder conveying pipelines (flour mills, food processing plants).

Chemical environmental protection: transportation of slurry containing solid particles, sewage treatment systems (such as desulfurization slurry pipelines).

Precautions for use

Installation specifications:

Priority should be given to using flange connections to ensure that the center of the pipeline is coaxial with the valve diameter and that the flange surface is flat without deviation.

It is strictly prohibited to install the cylinder downwards. It is recommended to install it upright or at a 45 degree angle upwards; When installing horizontally, the air delivery time should be extended to prevent dust accumulation.

Clean the pipeline before installation to avoid damage to the ceramic sealing surface caused by welding slag and particles.

Operating standards:

Avoid frequent opening and closing, keep the gate fully open or fully closed, and reduce eddy current erosion caused by partial opening.

Control the speed during opening and closing to prevent rapid collision between the gate and valve seat from damaging the sealing surface.

Maintenance and upkeep:

Regularly check the spring preload and sealing performance, and adjust or replace the sealing components in a timely manner when leaks are found.

Regularly lubricate moving parts such as valve stems to ensure flexible operation.

Clean the valve chamber before long-term shutdown to prevent the medium from solidifying and causing the gate to get stuck.

working principle

Opening process: The driving device (such as a cylinder) drives the gate to rise through the valve stem, and the gate disengages from the valve seat. The medium flows through the channels on both sides of the valve chamber.

Closing process: The gate descends under the push of the valve stem, and the spring preload force presses the gate tightly against the valve seat, achieving bidirectional sealing; At the same time, the eccentric design of the valve body causes the edge of the gate to change the flow direction of the medium, forming a vortex to flush the bottom of the valve seat and prevent dust accumulation.

Self grinding mechanism: During the opening and closing process, the gate plate rotates slightly under the action of spring force, forming a grinding and polishing effect between the sealing surfaces, maintaining long-term sealing performance.

Ceramic double gate valveApplication advantages

Long lifespan and low cost: Ceramic has better wear resistance than hard alloy, and vulnerable parts can be replaced on site, resulting in low overall maintenance costs.

High reliability: Zero leakage sealing and self-cleaning structure ensure stable system operation and reduce downtime maintenance frequency.

Strong adaptability: It can handle harsh working conditions such as high wear, strong corrosion, and solid particle content, meeting the requirements of complex media.

Environmental protection and energy conservation: Excellent sealing performance, reducing environmental pollution caused by medium leakage, and meeting the requirements of green production.

Automation compatibility: Supports control systems such as PLC and DCS, enabling remote monitoring and automated operations to improve production efficiency.