The Expeller is also one of the important parts of the slurry pump. It is combined with the Expeller ring to form the Expeller seal of the slurry pump. It is one of the three most common used types of slurry pump shaft seals. The standard material of the Expeller of slurry pump is gray iron or ductile iron. Anyway according to customer requirements, It can also be made of A05 which commonly is the flow-through part material . In recent years, most customers prefer A05 high-chromium wear-resistant alloy material when purchasing. The expeller can play a role in reducing the axial force. If the expeller is installed, the direction of the pressure force acting on the expeller is opposite to that acting on the impeller, which can offset part of the axial force. , so It also played a role in extending the life of the bearing.
Expeller Ring
The slurry expller ring is ususlly used together with the expller to form Expeller seal,and the expller ring is of the same material as the expller which is gray iron or ductile iron. But could update to A05 or other special materials upon the request
Expelller seal
The Expeller seal means that an open impeller is installed co-axially and oppositely near the back of the rear cover of the pump impeller. When the slurry pump is working, the expeller rotates with the main shaft of the pump, and the liquid in the expeller will also rotate together. The rotating liquid will generate an outward centrifugal force, which will cause the pressure of the sealing packings at the shaft seal to drop to normal pressure or negative pressure, the expeller will stop rotating when the slurry pump stops, and its centrifugal force will also disappear. The power seal composed of the expeller and the expeller ring is cheap and easy to maintain, but the expeller seal also has disadvantages. 1.Part of the energy is consumed on the expeller, generally about 3% 2. The expeller seal generally needs to cooperate with the stop seal, but the service life of the stop seal is relatively short
About Qiangda
Shijiazhuang Qiangda Industry Group Co., Ltd. is China's leading professional manufacturer of slurry pumps, sewage pumps and submersible pumps integrating pumps scientific research, design, manufacturing, and sales.
Qiangda Products The products of Qiangda include specific slurry pumps for Shield Tunneling Machine, Sewage pumps, submersible pumps, petrochemical pumps, flue gas desulfurization pumps, dredging pumps, etc., As a big platform Qiangda also offers a series of supporting products such as wear-resistant valves, diaphragm couplings, cyclones, control cabinets, etc. All of products sell well in various places, the market share of slurry pump products ranks among the top in the industry. At present, in China, our company's slurry pump market share has reached about 60%, and the sewage pump market share has exceeded 30%.
Qiangda Service Qiangda could provide various supporting pump products and pump system design and installation services for Metallurgy, Mining, Electric power , Coal, Dredging, Thermal power flue gas desulfurization, environmental protection engineering, sewage treatment, urban water supply and drainage, water conservancy engineering, farmland irrigation, petrochemical, building materials and many other enterprises and fields . Qiangda provides full-process and life-cycle pump solutions. From your project establishment to the after-sales of pump products, we promise to provide the qualified products and services.
Why Qiangda
Long history and Rich experience The factory is build in 1950s and saw the first impurity pump manufacturing, ever since then, the group is devoted into the field of industry pump, which allows the group to accumulate rich experience and could well deal with all pumps problem In the early 1980s, the company has successively introduced the design and manufacturing technologyfrom Germany Ritz Company, Japan Kubota Co., Ltd. etc, The products cover ten series of slurry pumps, submersible pumps and sewage pumps which are with international advanced levels.Mass production capacity has been formed in a relatively short period of time through digestion and absorption.
Application lab and Technology center Qiangda group has the sole impurity pump research lab in China that serves the pump industry, specializing in the research work of pumps performance, wear mechanism, wear-resistant materials and new product development.To make full use of the technology, an independent technology center was set up in the factory, focusing on cooperation with top domestic colleges and universities such as Tsinghua University, a fast product transformation from the latest technology is released. At the same time, from the perspective of sustainable development, the company strictly ensures the proportion of product R&D investment. Which injects impetus to the renewal of products . Now Kingda has also 6 series of nearly 100 varieties of high-efficiency and energy-saving new products. It has embarked a new career on a road of "technology introduction, digestion and absorption, innovation and improvement".
Strong Casting and Manufacturing Capacity Qiangda Group has invested 650 million Yuan in Xingtang County, Shijiazhuang City to build a new R&D, design, and manufacturing base. The plant covers an area of more than 300 acres, with a total construction area of nearly 80,000 square meters. It could produce 3,050 sets of various pumps systems and 1,400 tons of various pump accessories. At present, Xingtang Pump factory, a subsidiary of Qiangda Group, has 378 sets of main production equipment, 73 sets of special use equipment, 500 sets of various advanced test, measurement, and analysis instruments & equipments; along with more than 480 sets of computers, Now all equipment control has basically finished digitization , constitute a complete production process equipment system with strong manufacturing capabilities.
Professional Oversea teams In order to better serve overseas customers, Qiangda establish a new and separatedoversea department in 2021, who will actively explore the international marketrelying on domestic production bases . The service team of the new department has decades' experience in overseas trade. they have a thorough understanding of products and welcome any consultation. Choose Qiangda and pump strong power to your career.
Customized solution for every Pump need
Qiangda group,in line with the concept of serving customers and developing together with customers, provides customized solutions for every slurry pump needs. For years, we learn from the customer and better served them in return.Qiangda Group focus on large scale slurry pumps, pumps strong power to your career.
In terms of equipment quality Provide clients with high-quality products that meet relevant national standards, contract requirements, and customer's design and application requirements. And implement life-long service. A third-party supervision system can be implemented for important products. In terms of delivery Perform the delivery responsibilities on time, and transport in the most convenient way to minimize the time for customers to get the product In terms of technical service Provide users with important technical information for operation and maintenance. Combining with the network and remotely, provide technical and business training for equipment installation, commissioning, operation, and maintenance. When necessary, experienced engineering and technical personnel could be sent to provide on-site technical services in time . After receiving the user's complain of the quality problem , It is guaranteed to reply within 24 hours and provide a solution within 48 hours, and the service will not stop if the user is not satisfied with the solution.
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