UV-based UV-based UV-sterilizer UV-based PV-based PV-based PV-based PV-type

The Haitenaide ultraviolet sterilization oven is described as easy to operate and maintain and capable of extending product shelf life. I. Product introduction. 1. Operating principle: the UV sterilization band is mainly 200–300 nm. When bacteria and viruses in water or air pass through the 253.7 nm irradiation region, UV penetrates cell membranes and nuclei, breaks molecular bonds in nucleic acids (DNA or RNA), and prevents replication or inactivates the microorganisms without chemical agents. The source further states that sterilization lamps need not convert their output to visible light and that 100–200 nm radiation provides effective sterilization because cells absorb it well. Absorbed UV acts on DNA; photons are absorbed by base pairs, causing genetic changes that kill bacteria or prevent reproduction. 2. Sterilization efficiency: the stated efficiency is 99%–99.9%. Common bacteria and viruses are generally treated in less than one second, while conventional chlorine or ozone disinfection is stated to require 20 minutes to one hour for a comparable effect. 3. Features and scope: uniform water flow, no dead zones, good irradiation, thorough sterilization, low energy consumption and flexible, convenient installation. The stainless-steel body avoids metal-ion contamination. The structure is a closed vessel with quartz sleeves and internal electrical controls. The key UV lamps have a theoretical life of 10000 hours, described as internationally advanced. Advantages of UV disinfection. 4. The source describes worldwide recognition of effectiveness against bacteria, viruses and other pathogens, generally within one second, compared with 20–50 minutes for chlorine or ozone. It claims efficient broad-spectrum sterilization, no secondary pollution, safe and reasonable design, safe/reliable operation, simple low-cost operation and maintenance, a small footprint and no noise. 5. Protection precautions: UV can harm people as well as bacteria, particularly the cornea. Never look directly at an illuminated lamp. The source specifies ordinary glass, glasses or a light-transmitting plastic sheet as a protective face shield if viewing is necessary, and warns against mistakenly using quartz glass because ordinary glass blocks almost all UV. It states that facial burns may peel and heal after several days and that eye injury can cause redness, swelling, tearing and stinging, taking about three or four days to heal. It nevertheless recommends immediate medical attention after any injury. 6. Maintenance: inspect regularly to ensure normal lamp operation. Replace UV lamps after 9000 continuous operating hours or one year. Disconnect the lamp power socket before removing the old tube. Avoid touching the new tube's quartz glass with fingers, since contamination affects intensity, and carefully place it in the sterilizer cavity. II. Main dimensions: overall length 2000 mm; sterilization zone 1200 mm; product infeed zone 400 mm; outfeed zone 400 mm; adjustable inlet/outlet height 200 mm; inlet/outlet mesh-belt width 500 mm; conveyor height above floor 750±20 mm. III. Main construction: 1. Outer working tunnel: thickened 1.2 mm stainless-steel plate, model #212. 2. Inner tunnel: one set of 1.0 mm 304 mirror-finish stainless-steel panels. 3. Support frame: one set of square steel tubing, specified as stainless-steel square tubing. 4. Air-handling system: one forced-air extraction-fan assembly for harmful-gas removal, model 200*200. 5. Conveyor: imported high-grade Teflon mesh belt, U.S. SE. 6. Conveyor rollers: galvanized wear-resistant rollers. 7. Two inlet/outlet baffle sets: adjustable stainless-steel plates at the sterilization-zone entry/exit, with an adjustment range stated as 2000MM. 8. Conveyor drive: 120 W variable-speed motor; conveyor speed adjustable 0–20 m/min according to production requirements. 9. Two load-bearing crossbeams; balancing devices are anti-vibration leveling feet, model 60*12*140mm. IV. UV sterilization section. 1. Lamp-source section length 1200 mm, with sixteen sets of 20 W dedicated UV sterilization lamps distributed above, below, left and right inside the oven. Mirror-finish stainless-steel reflectors improve UV utilization, with a stated value up to 99% and sterilization time one minute. 2. Infeed/outfeed ports have light-blocking zones, shields and adjustable baffles. The exterior is bent painted steel plate; the machine is corrosion-resistant and easy to clean. Braked mobile casters underneath facilitate movement. 3. Transmission: 120 W stepless variable-speed motor, digital stepless speed control and a linear-speed meter; uniform speed adjustable 0–10 m/min. (1) Imported high-grade Teflon mesh belt with a central support plate; adjustable drive and idler rollers at the front/rear help prevent tracking to the edge and belt damage. (2) Each lamp group is independently controlled. Total lamp length 598 mm; wavelength is stated as 254.7mm, with sterilization rate up to 99.99%. (3) An automatic timer monitors lamp operating hours for convenient replacement. V. Protection: overvoltage/overcurrent protection, fault alarms and equipment-overload protection.

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