Rotary Screw Vacuum Pump

Product Introduction

The screw vacuum pump is a new product developed by Shandong Zhanggu, incorporating years of design and manufacturing experience to meet the market's demand for energy efficiency and environmental protection. This series of screw vacuum pumps features a compact structure, distinctive appearance, high efficiency, low noise, reliable performance, and long service life, making it highly suitable for applications requiring medium to small flow rates and high pressure. It is an ideal air supply solution widely used in industrial sectors such as metallurgy, machinery, chemicals, mining, and power.

Product Features

1. Advanced rotor profile design effectively reduces fluid dynamic losses and improves overall efficiency.

2. Excellent internal compression characteristics with low power consumption, offering up to 30% energy savings compared to Roots vacuum pumps.

3. Air-cooled structure supports single-stage pressure up to 250 kPa without the need for cooling water.

4. Oil-free design within the rotor chamber ensures high air purity.

5. Low airflow pulsation enables smooth operation under high speed and high pressure, with reduced aerodynamic noise.

6. Helical synchronous gears with keyless connection provide reliable positioning and ensure stable and safe operation across a wide speed range.

7. Large shaft diameter design enhances rotor stiffness and load capacity.

8. Combination of four-point angular contact ball bearings and cylindrical roller bearings at the locating end ensures sufficient load capacity and stability under extreme conditions, extending bearing service life.

9. Intermediate connection casing design distributes stress evenly and improves overall load-bearing capacity; large reinforcing ribs enhance casing rigidity for reliable high-pressure operation.

10. Splash lubrication system minimizes oil agitation power loss and ensures consistent oil supply to gears and bearings.

11. Unique air seal configuration provides effective sealing and extended service life.

12. Streamlined heat sinks on end covers improve heat dissipation in the gearbox.

Application Areas

Product Packaging

Company Profile

Shandong Zhangqiu Blower Co.,Ltd (Formerly name: Shandong Zhangqiu Blower Works) is a company with over 50 years’ blower design, manufacture technology and experience. We set up two Sino-Japanese Joint-ventures and one USA branch that of 1st company in China blower industry establishing oversea branch. We are the leading enterprise in Zhangqiu local industry and main product-Roots Blower’s market occupancy is top-ranked in China blower industry.

Overall developing strategy: “Develop main business, pioneer new fields and innovate, cooperate to be a great company”. Working concept: “Do the best”. Now we are a modern company integrated the design, manufacturing and sales on products of: Roots Blower, Centrifugal Blower, Fan, Industrial Pump, Pneumatic Conveying System, Electrical Equipment, MVR Evaporation, Concentration and Crystallization system, Waste Water Treatment Product and Service and etc.

In 2005, we moved to newly built high-standard modern industrial park. This new industrial park covers an area of 430,000 m2 with complete facility and magnificent office building providing wide developing space for cooperation with oversea company and great-leap-forward development of us.

In July, 7th, 2011, the company was publish listed on Shenzhen Stock Exchange center. Stock code: 002598. This is a great development milestone of us.