NuoXuTech

  Vacuum coating technology has become an essential branch of vacuum applications, playing a pivotal role in industries like optics, electronics, energy development, packaging, and surface science. The primary methods used in vacuum coating include vacuum evaporation, sputtering, ion plating, beam deposition, and molecular beam epitaxy. Chemical vapor deposition (CVD) is another widely adopted technique. Key Vacuum Coating Methods Vacuum coating techniques are aimed at modifying the physical or chemical properties of a material's surface, which categorizes them under vacuum surface treatment technologies. Some of the most commonly used methods include: Vacuum Evaporation: The material to be coated is vaporized and deposited on a substrate. Sputtering: Atoms are ejected from a solid target material due to bombardment by energetic particles and then deposited as a thin film. Ion Plating: A method that combines evaporation with bombardment of the substrate by ions. Molecular Beam

  Roots pumps, also known as mechanical booster pumps, are widely used in vacuum systems due to their high pumping speed and reliability. However, after a period of operation, these pumps may develop abnormal noises, indicating potential issues. Understanding and troubleshooting these common faults is crucial for maintaining pump efficiency and longevity. Common Causes of Abnormal Noise in Roots Pumps When abnormal noise is detected in a Roots pump after extended operation, the following causes may be responsible: 1. High Startup Pressure If the startup pressure of the Roots pump is too high, it can cause the pump's components to overheat and become damaged. While some specially designed mechanical booster pumps can start at atmospheric pressure, exceeding the recommended startup pressure can lead to component wear and failure. 2. Abrasive Particles Larger abrasive particles generated during the production process can enter the Roots pump, causing wear and tear on the internal com

  Roots pumps , or mechanical booster pumps, require careful handling during disassembly and assembly to avoid damage and ensure their efficient operation. Following the correct procedures and taking necessary precautions can significantly prolong the pump's lifespan and maintain its performance.Let's learn how to disassemble and assemble Roots pump Disassembly Procedure for Roots Pumps To disassemble a Roots pump, follow these steps in sequence: Drain Lubricating Oil and Cooling Water: Before beginning the disassembly process, ensure that all lubricating oil and cooling water are fully drained from the pump. Remove Coupling and Motor: Detach the coupling and motor from the pump. This step requires careful handling to prevent damage to the coupling and motor components. Dismantle Bypass Piping and Bypass Valve: Carefully remove the bypass piping and bypass valve from the pump to allow access to internal components. Remove Bearings: Extract the bearings from the pump to faci

  Roots pumps are essential components in many vacuum systems, offering high pumping speeds and reliable performance. However, to maximize their efficiency and lifespan, it is crucial to follow the correct startup procedure and adhere to specific operating precautions. This article provides a detailed guide on the proper startup steps and the key considerations to keep in mind during the operation of Roots pumps. 1. Startup Procedure for Roots Pumps Properly starting a Roots pump is essential to ensure smooth operation and avoid potential damage. Follow these steps for the correct startup procedure: 1.1 Ensure Cooling Water Supply and Lubrication Begin by supplying cooling water to the pump. This is necessary to maintain the operating temperature within the recommended range. Check the oil cups, gearboxes, and front end cover to ensure there is sufficient lubrication oil. Proper lubrication is vital for minimizing friction and preventing wear on moving parts. 1.2 Start the Fore Pump S

The piston vacuum pump is a type of vacuum pump that operates by using a piston mechanism to change the volume of the suction chamber, which results in gas extraction. While the gas extraction principle of the piston vacuum pump is similar to that of the rotary vane pump, the two pumps differ in structure. This article will explain the working principle, types, and structural details of piston vacuum pumps, as well as their practical applications in various industries. 1. Overview of Piston Vacuum Pumps Piston vacuum pumps are categorized into two types: single-stage and two-stage pumps. They are available in both vertical and horizontal configurations. The ultimate pressure of a single-stage pump ranges from 0.4 to 1.3 Pa, while the ultimate pressure of a two-stage pump ranges from 6 × 10⁻² to 10⁻¹ Pa. Generally, large pumps with a pumping speed exceeding 150 L/s are designed as single-stage pumps. These pumps can be used independently or as a fore pump for oth

   Rotary vane vacuum pumps, such as the 2XZ-C model, are widely used for their reliability and efficiency. However, like any mechanical equipment, they can experience issues that require proper maintenance. Here are some common problems and their troubleshooting methods: 1. 2XZ-C Rotary Vane Vacuum Pump Does Not Start Before attempting to start the pump, it's crucial to assess the situation to avoid exacerbating the problem. The pump may either turn manually (hand-rotatable) or be completely jammed. Pump is hand-rotatable but does not start: Possible causes include: Coupling malfunction. Belt slippage. Incorrect motor wiring. Motor failure. Power supply issues. Pump is not hand-rotatable or is difficult to turn: This could be due to: Low pump start temperature, leading to high pump oil viscosity. Excessive backflow of pump oil upon shutdown due to design flaws or excessive oil level (overfilling, condensation of water vapor in the pump, or water condensed in the exhaust

   Solvent recovery is a critical process in industries such as chemical, pharmaceutical, petrochemical, and environmental protection. It involves recovering solvents from process streams or waste products for reuse, which helps in reducing costs and minimizing environmental impact. Screw vacuum pumps have become a preferred choice in solvent recovery systems due to their reliability, efficiency, and ability to handle various types of gases and vapors. This article discusses the application of screw vacuum pumps in solvent recovery, In the production of active pharmaceutical ingredients (APIs), the solvent crystallization process involves several critical steps: filtration, washing, and vacuum drying after crystallization. The moisture content of the material is generally around 20%, and the drying temperature should not exceed 80°C. After drying, the moisture content of the API must be reduced to below 0.5%. To remove the solvent from the material effectively, the pressu

Rotary vane vacuum pumps are essential components in numerous industrial and scientific applications, providing reliable and efficient vacuum creation. These pumps consist of a pump body, rotor, vanes, end covers, springs, and other components. This article explains the working principle and highlights the distinctive features of rotary vane vacuum pumps. 1. Working Principle of Rotary Vane Vacuum Pumps The rotary vane vacuum pump operates by using a rotor installed eccentrically within the pump chamber. The outer circumference of the rotor is tangent to the inner surface of the pump chamber, with a small clearance between them. Two vanes, equipped with springs, are placed within slots in the rotor. As the rotor rotates, centrifugal force and spring tension keep the vane tips in contact with the inner wall of the pump chamber. This rotation causes the vanes to slide along the chamber wall, creating an enclosed, crescent-shaped space that is divided into three parts: A, B,

Dry screw vacuum pumps are essential vacuum equipment used in various industries. These pumps operate using a pair of screws that rotate synchronously in opposite directions at high speeds within the pump casing. The rotating screws create suction and discharge, allowing the pump to achieve effective vacuum levels. This article provides an overview of the key features and extensive application range of dry screw vacuum pumps across different sectors. 1. Key Features of Dry Screw Vacuum Pumps High Reliability: Dry screw vacuum pumps have fewer components and no consumable parts, making them highly reliable with a long service life. Ease of Operation and Maintenance: The straightforward design ensures easy operation and maintenance. Excellent Dynamic Balance: With no unbalanced inertial forces, these pumps can run smoothly at high speeds, ensuring stable operation. Strong Adaptability: Due to their forced gas transmission characteristics, dry screw vacuum pumps can maintain a high pu