The plunger pump of the filter press is a pump type designed specifically for feeding the filter press, playing a key role in the solid-liquid separation process. The following is a detailed introduction about the plunger pump of the filter press:

　　Working principle: The plunger pump of the filter press relies on the reciprocating motion of the plunger in the cylinder body to change the volume of the sealed working chamber to achieve suction and discharge. When the plunger moves upward, the volume inside the pump chamber increases, forming negative pressure, and the liquid is sucked into the pump chamber; When the plunger moves downwards, the volume inside the pump chamber gradually decreases, the pressure increases, and the liquid is discharged from the pump chamber.

　　feature

　　Efficient and energy-saving: When transporting liquids, the flow rate is stable, without overflow, pulsation, stirring, and shearing phenomena, ensuring the continuity and stability of the work. Compared with the quantitative pump slurry pump, it can save nearly 60% energy.

　　High discharge pressure: Even at low flow rates, it can maintain a high discharge pressure and work efficiently under various conditions.

　　Strong corrosion resistance: After testing for corrosion resistance, acid and alkali resistance, all indicators have reached the level of similar foreign products, and can operate stably in harsh environments.

　　Long lifespan: Key components such as ceramic plungers have good wear resistance and corrosion resistance, such as alumina ceramic plungers with a hardness of HLC8.5 or above, a surface roughness of 0.4um, and a service life of at least 15 years.

　　Low maintenance cost: The filter press uses a ceramic plunger pump for feeding, and the annual maintenance cost is relatively low. Only the valve plate and rubber seal need to be replaced each time.

　　working process

　　Feeding stage: At the beginning of feeding, the filter chamber of the filter press is empty, and the plunger pump starts the high flow feeding mode to quickly fill the filter press with material.

　　Pressure boosting filtration stage: When the filter press is filled with material and the pressure starts to rise, the plunger pump automatically switches to a large displacement hydraulic pump according to the pressure, and the small displacement hydraulic pump stops, meeting the feeding requirements of medium to high pressure and large flow rate.

　　Pressure holding filtration stage: When the filtration pressure of the filter press rises to a higher set pressure, the plunger pump will adjust its output flow rate to decrease and maintain constant pressure feeding until the filtration is completed.

　　Application field: It is suitable for ceramic slurry spray drying, coal water slurry high-pressure spray combustion, clean (dirty) water, long distance transportation of various suspended liquids, slurries, sand containing liquids, etc. It is widely used in sewage treatment, mining, food processing, environmental protection and other industries.