04
2021
06
The structure, functions, and working principles of each component of the crystallizer
The crystallizer has a horizontal, elongated cylindrical structure and consists primarily of the main body, spiral tube, transmission mechanism, saddle support, bearing housing, mechanical sealing device, crystal-scraping rod, central shaft, and other components.
Crystallizer It is a horizontal, long-cylindrical structure composed primarily of the main body, spiral tube, transmission mechanism, saddle, bearing housing, mechanical sealing device, crystal-scraping rod, central shaft, and other components.
The vessel consists of three main components: the inner liner, the outer liner, and reinforcing rings. To meet the special requirements of industries such as pharmaceuticals, healthcare, and food processing, the inner liner that comes into contact with materials is made entirely of stainless steel. The inner liner is fabricated from coated steel plates, which are polished after welding to achieve a high degree of smoothness, thereby ensuring superior hygienic quality of the product. The outer liner is made of carbon steel plates; when welding long seams, advanced techniques such as submerged arc automatic welding are employed to guarantee weld quality and ensure reliable, trouble-free operation for customers. The inner and outer liners are integrated into a single, cohesive unit by means of reinforcing rings. During operation, the space between the two liners—formed by two cylinders—is cooled by circulating water, creating an external cooling system. Crystallizer The pressure of circulating cooling water generally does not exceed 0.2 MPa.
Spiral tubes: To meet the special requirements of industries such as pharmaceuticals, healthcare, and food processing, the materials used for bending spiral tubes are stainless steel pipes with polished surfaces. The two ends of the spiral tube are connected to a central shaft; during operation, the spiral tube is filled with circulating cooling water, forming an internal cooling system for the equipment. The pressure of the circulating cooling water typically does not exceed 0.2 MPa. At the same time, the spiral tube also features the capability of simultaneously cooling and stirring the material.
Drive System: A shaft-mounted gear reducer specially designed and manufactured for crystallizers is employed. The reducer is made of alloy materials, and the tooth surfaces of the gears have undergone hardening treatment. The cylindrical helical gears are produced via grinding. The drive system operates smoothly, with noise levels below the national standard.
Saddle: Fabricated by welding carbon steel plates, the saddle serves as the support structure for the entire equipment. All of the equipment’s weight is distributed onto the saddles located at both ends of the cylinder. During installation, the saddles can be connected to the foundation using anchor bolts or directly welded onto pre-embedded steel beams in the concrete foundation.
Bearing Housing: A suspended bearing housing is employed. The bearing housing features a cast structure and is directly mounted on the end plates on both sides of the cylinder block, ensuring a compact design. All bearings are double-row self-aligning roller bearings, offering high transmission efficiency and a long service life.
The design of the crystal scraper is a new-generation product. Crystallizer A key difference from previous-generation crystallizers: The newly developed and manufactured crystallizer, equipped with a scraper blade, can prevent materials from crystallizing on the end plates and forming thick crystal layers that would compromise product quality. During the design and development of this new-generation crystallizer, we recognized the critical importance of the scraper design. Drawing on practical applications by domestic manufacturers and incorporating feedback from foreign equipment, we made significant improvements to the scrapers used in overseas devices. The newly designed crystal scraper boasts a simple structure and requires minimal operational resistance.