The development and improvement of the cylindrical and conical reaction filtration dryer

Filtration, washing, drying and other operations are often carried out in industries such as chemical engineering, medicine and food. These operations are generally carried out through process equipment such as filters, scrubbers and dryers. Each of these process equipment has its own supporting devices, thus occupying a large area and being expensive. Especially when materials are moved or conveyed between the equipment, it is easy to cause material loss and waste. At the same time, due to the shape limitations of the equipment itself, there are processing dead corners inside the container, which makes it easy for materials to remain in the equipment during the production process, resulting in waste. Especially in the pharmaceutical industry, it is not allowed for any material to remain in the process equipment during the production process. If there is any residue, it must be cleaned, which greatly reduces production efficiency.

In order to integrate the functions of various devices and achieve multiple technical effects on a single process equipment, Shuangrui Machinery has carried out extensive design and research and development work. Finally, it has successfully developed a multi-functional cylinder-cone reaction filtration and drying machine that integrates filtration, washing and drying, and has successfully applied for a patent (Patent No. (ZL 201721560677.6, ZL 202023247813.0, ZL 202220572661.1) This equipment has three main functions: filtration, washing and drying. It also has multiple functions such as reaction, extraction, crystallization, concentration, evaporation, mixing and crushing. It is an improved multi-functional device that meets the production requirements of the chemical industry for high quality, high added value, multiple varieties and small batches.

The new multi-functional cylindrical and conical reaction filtration dryer has improved the system treatment effect by enhancing the equipment structure and optimizing the process flow. It occupies less space, has a lower cost, is convenient for production and processing, reduces labor intensity and significantly decreases material loss. Moreover, it is particularly suitable for operations with extremely high sealing requirements such as toxic or flammable and explosive substances, and has almost no impact on workers' health or the surrounding environment. Its main improvement measures are in the following aspects:

(1) Solid-liquid filtration and separation can be carried out under pressure or vacuum, and vacuum or heating drying can be performed simultaneously. The filter cake can be washed multiple times using the same or different washing liquids. Helical ribbon stirring, with outstanding stirring effect; The conical filter base and the tank are of a detachable structure, equipped with a conical corrosion-resistant and high-temperature resistant sintered filter screen inside, which is easy to disassemble and assemble. The shaft and the tank body adopt double-end face mechanical seals, ensuring no leakage. The discharge cover is equipped with a dead corner filter, completely avoiding the dead corner filtration that exists in all other filters, and the filtration effect is good. The filter screen is made of corrosion-resistant and high-temperature resistant sintered mesh, featuring high and stable filtration accuracy.

(2) As the cylindrical and conical reaction filtration dryer is equipped with a filtration device in the conical part, although this part still has an outer jacket heating, the heat transfer effect is relatively low. To enhance the overall thermal efficiency of this machine, we have designed hollow shafts and hollow screw belts to heat the materials. The hollow helical ribbon has a large heat transfer area inside the machine, which enables the heat medium to fully circulate and contact the materials in the equipment cavity, significantly enhancing the drying efficiency.

(3) The stirring screw ribbon adopts a new structure, closely adhering to the conical spherical shell at the bottom of the container and the discharge sealing mechanism. This ensures that there are no operational dead corners for the materials inside the container, making the stirring more uniform and preventing material waste.