Closed plate filter is a filtration equipment mainly used in liquid filtration, gas filtration, and air filtration applications. Its structure mainly includes the following parts:
1. Filter plate: The filter plate is the core component of a closed plate filter, and its surface is covered with filter media, such as filter cloth, filter paper, etc. Liquid or gas is filtered through the filtering medium on the filter plate to remove impurities and particles.
2. Pump: The closed plate filter is equipped with a pump, which is used to transport the liquid or gas that needs to be filtered into the filter plate. The selection of pumps should be matched according to different application scenarioses and flow requirements.
3. Pressure gauge: The pressure gauge is used to monitor the pressure difference on both sides of the filter plate. When the pressure difference exceeds a certain value, it indicates that the filter plate is blocked and needs to be replaced or cleaned.
4. Sealing ring: The sealing ring is located between the filter plate and the filter housing, used to seal the filter plate and ensure no liquid or gas leakage.
The working principle of a closed plate filter is relatively simple. Liquid or gas is transported to the filter plate by a pump, and the filtering medium on the filter plate intercepts impurities and particles, allowing clean liquid or gas to flow out. When the filter plate is blocked, the pressure difference will increase. At this time, it is necessary to replace or clean the filter plate to restore its filtering function.

The working principle of a closed plate filter is to use the interception, adsorption, screening and other functions of the filter cake to separate solid impurities in the liquid, thereby achieving the goal of purifying the liquid. Specifically, the closed plate filter pumps liquid into the equipment through high pressure, passes through the filter, and the filter cake forms inside the filter. The liquid flows out after being filtered by the filter cake.

Efficient filtration: The closed plate filter adopts high-pressure filtration method, which can quickly form filter cake and improve filtration efficiency.
Energy saving and environmental protection: The closed plate filter adopts a closed structure, which can reduce liquid waste and pollution, while reducing operating costs.
Easy to maintain: The closed plate filter adopts a professional control system, which can achieve automated control and fault diagnosis.

Closed plate filters are used in industries such as chemical, pharmaceutical, and food.
Chemical industry: Closed plate filters can be used to filter chemical reagents, catalysts, etc.
Pharmaceutical industry: Closed plate filters can be used for filtering drugs, such as oral liquids, injections, etc.
Food industry: Closed plate filters can be used for filtering foods such as fruit juice and alcohol.

To ensure the normal operation of the closed plate filter, regular maintenance is required, mainly including the following aspects:
Cleaning equipment: Regularly clean the inside of the filter, pipelines, etc. to maintain the cleanliness of the equipment.
Replacing filter element: Regularly replace the filter element to ensure the filtration effect of the equipment.
Check the operation status of the equipment: Regularly check the vibration, temperature and other parameters of the equipment to determine its operation status.
Regular calibration: Regularly calibrate the equipment to ensure its accuracy and reliability.