vacuum filter

Rotary Vacuum Filter (RDVF):

The rotary vacuum filter is one of the most common types of filters and consists of a large hollow cylinder, which has a filtration medium on its surface and rotates around the horizontal axis. A part of the cylinder is located in a pulp tank and the pulp liquid is separated from the filter medium using the vacuum created inside the cylinder. The washing water can be sprayed on the surface of the cylinder or through the water spray nozzles, the sides of the fabric can be continuously washed. A stirrer works with a slow and adjustable movement to homogenize the solid in the pulp.
 Full control of vacuum filtration operation in this company is done using new technology in sealing and automation based on PLC.
It is possible to use different cake discharge systems based on the thickness, strength and structure of the cake. Due to the fact that water under pressure and water spray continuously acts as a cleaner, so the filter fabric will be in the best condition.

Specifications of rotary vacuum drum filter:

Completely continuous filtration system without wasted time during the process
Adjustable drum speed
The possibility of several methods to discharge the cake
Possibility of continuous washing of the filter fabric
Selection of filter fabric based on different applications and products
The possibility of continuously washing the cake with water or cake washing liquid
Mechanized operation, no sudden stop of the system and easy repairs
Limited operating and overhead costs

The types of discharge systems for cylindrical filters under vacuum of Tehzih Sanat Baran Company are as follows:

Drainage system using scrubber:
1- cylinder, 2- filter cloth, 3- cake, 4- scrubber
This discharge system is used for filters with the output of solid and thick cakes that are easily separated from the filter fabric and divided into pieces. Discharge is usually done with the help of air flow from inside the drum to the discharge area.

Gultan unloader:
1- cylinder, 2- filter cloth, 3- cake, 4- discharge roller, 5- scrubber
This system is used to drain the filter of dough cakes that are stuck to the surface of the discharge roller.

Strip unloader:
1- cylinder, 2- filter fabric, 3- cake, 4- return rollers/control rollers, 5- filter fabric washing system, 6- tank
This discharge system is used for thin and fragile filter cakes that are easily separated from the filter cloth and broken by tearing and returning the cloth. The filter cloth can be completely washed before entering the tank.

Drainage system:
1- cylinder, 2- filter cloth, 3- pre-coated layer, 4- scrubber, 5- cake, 6- coated layer/scraped cake
First, a filter aid is dewatered in the upper part and then the pulp is filtered on it. In order to maintain the filter surface, a thin layer of filter aid is scraped along with a thin layer of filter cake. This draining method is used when the liquid obtained from filtration with high purity and without solid particles is required, or when very fine particles block the filter cloth.

Advantages:

Continuous operation: these filters carry out the filtration process that includes loading, cake drying, cake unloading and fabric washing continuously during one cycle, and there is no need to stop the filtration and do each of these things. So vacuum filters are an alternative to being continuous in They have a much higher capacity and since these steps can be done automatically, the need for labor is minimized.
High capacity: As mentioned, these filters are an alternative to continuous work, and on the other hand, due to their higher filtering level, they have higher laterality than other filters. Among the filters, regardless of the dimensions and capacities selected, strip filters And then disk filters and drum filters have a higher throughput. But choosing any type of vacuum filter requires sufficient knowledge and experience. Biotechnology gives you this opportunity for free.
Small volume: these filters are much smaller in terms of dimensions than other filtration equipment and take up much less space, so in industries that do not have enough space to use a filter press, this filter is a very suitable alternative.
Easy to install and maintain: vacuum filters are one of the filtering devices that are very hard to be damaged due to having a comfortable functioning mechanism and will not require special repairs, as well as in the maintenance and replacement of its parts, such as replacing filter cloths at the time of purchase. And the device is fully trained on how to replace it, and this process can be done in a short time.
The possibility of removing the cake and easy washing of fabrics: by placing special systems in different parts of this machine, in addition to removing the cake, you can also wash the surface of the fabrics, which increases work efficiency.
Ability to adjust the speed: in different industries and different uses, the cakes dry at different times compared to each other, so it is possible to adjust the filtration speed to create an optimal state so that both the cake formation is complete and the cake is completely dried. be discharged
Operation cleanliness: In industries that require maximum environmental cleanliness, such as pharmaceutical and food industries, these filters have a much better performance.
applications :
• Mining Industry
• chemical industry
• Food industry
• Pharmaceutical industries
• Effluents and tailings from mining and chemical industries

The price of filter drum or vacuum drum filter:

The price of rotary vacuum drum filter device is different depending on different parameters. Among these parameters, we can mention the capacity of the device, which determines the size of the device and the power of the equipment used in its construction, and naturally, the price of a device with a high capacity is different from that of a small device. Among other parameters, it can be customized Paying customers who can order the use of special parts and materials in the construction of the device.