Continuous culture and filtration system for crystals

Abstract

The invention belongs to the field of production process equipment, and specifically relates to a continuous culture and filtration system for crystals. The system comprises a culture device, a filtration device and a control device, wherein the culture device comprises a crystal culture tank, a temperature measuring thermal resistance, a PH sensor, a crystal carrier, a crystal carrier motor, a stirrer and a motor thereof, an electric heater, a cooling water inlet and a cooling water outlet, and the filtration device comprises a hot water bath tank and a balance water bath tank, which comprise a hot water tank, a balance water tank and a temperature measuring thermal resistance thereof, a coiled pipe, a receiving tank and a temperature measuring thermal resistance thereof, a conveying pump, a metering pump, a filtration tank, a stirrer and a motor thereof, an electric heater, a cooling water inlet and a cooling water outlet; and the control device comprises a PLC (Programmable Logic Controller) and a touch screen. In the culture process of the fast-growing large crystals, a growth solution with particle impurities flowing out of the crystal culture tank is dissolved by heating and filtered, and finally is cooled to reflux so as to complete the continuous filtration circulation. The growth speed and quality of large-size KDP (potassium dihydrogen phosphate) and DKDP (potassium dideuterium phosphate) crystals are improved.

Description

technical field [0001] The patent of the invention relates to a continuous crystal cultivation and filtration system, which belongs to the field of production process equipment. Background technique [0002] Potassium dihydrogen phosphate (KDP) and diduterium potassium phosphate (DKDP) crystals are widely used nonlinear aqueous crystal materials, which have high laser damage threshold and high nonlinear coefficient, and can make larger-sized devices and other advantages, its double, triple, and quadruple frequency devices are usually used in room temperature ND:YAG lasers and dye lasers, and are also ideal high-power frequency conversion materials. In recent years, with the rapid development of inertial confinement fusion (ICF), the research on KDP and DKDP crystals has entered a new stage in the world. Although new nonlinear optical materials are constantly emerging, the high-quality and large-sized KDP and DKDP crystals are currently the only crystals that can be used in ...

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Problems solved by technology

[0004] When cultivating high-quality large-size KDP crystals, the main disadvantages of the traditional growth method (aqueous solution slow cooling method) are slow crystal growth rate, long growth cycle, difficult to guarantee crystal quality, and low yield of final crystals, resulting in expensive crystals and seriously affecting its mass use

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