NuoXuTech

   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 ex...

    A Roots vacuum pump is a type of vacuum pump that operates without internal compression, typically having a low compression ratio, which makes it necessary to use a fore pump for high and medium vacuum applications. The operation of a Roots pump relies on a pair of synchronized, counter-rotating lobed rotors that move gas through the pump chamber, effectively evacuating the vacuum space. The pump itself cannot handle gas discharge to the atmosphere and therefore requires a backing pump, such as an oil-sealed or water-ring pump, to achieve optimal performance. Structure and Operation The Roots vacuum pump features a pair of lobed rotors, which are synchronized to rotate at high speeds (up to 3450-4100 RPM). The lobes are designed in various shapes, including circular arcs, involute curves, and cycloids, with the involute curve being most commonly used due to its high volumetric efficiency and ease of manufacturing precision. During operation, gas enters the pu...

  Customers frequently encounter difficulties with the performance of their 2BV vacuum pumps, particularly regarding the pumping speed. Understanding how to correct the pumping speed based on real-world conditions is crucial for ensuring optimal performance. This guide will walk you through the necessary steps and calculations. Standard Performance Conditions The performance curves of 2BV vacuum pumps are typically measured at a water temperature of 15°C. However, actual operating conditions can vary, requiring adjustments to the pump's rated pumping speed. Correction Formula To correct the pumping speed of a 2BV vacuum pump, you can use the following formula: Q t = Q 15 × K Q_t = Q_{15} \times K Q t ​ = Q 15 ​ × K Where: Q t Q_t Q t ​ is the gas flow rate at water temperature t t t °C (m³/min) Q 15 Q_{15} Q 15 ​ is the gas flow rate at water temperature 15°C (m³/min) K K K is the gas flow correction factor, calculated as: K = ( P 1 − P t ) ( P 1 − P 15 ) K = \frac{(P_1 -...