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Having 26 series -312 varieties - over 1000 pump models
Focused on water pump research and development manufacturing for 36 years
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Balance disc
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Genuine accessories
Horizontal Single-Stage Fire Pump
Accessory Details
Overview of the Balancing Device
The balancing device generally consists of a balance disc and a balance drum. Both the balance disc and the balance drum are commonly used in segmental multistage pumps, where they are mounted behind the last-stage impeller and rotate together with the rotor. Among these components, the balance disc is primarily used to counterbalance axial forces.
The working principle of a balance disc
The working principle of the balance disc is as follows: The pressurized liquid exiting the final stage flows through the radial clearance of the adjusting sleeve into the cavity located in front of the balance disc. This cavity is maintained at a high pressure. Behind the balance disc, a balance pipe is connected to the pump inlet, and its pressure is approximately equal to the inlet pressure. As a result, the pressures on either side of the balance disc are unequal, generating an axial thrust acting in the backward direction—this is known as the balancing force. Since the balancing force acts in the opposite direction to the axial force, it automatically counterbalances the axial thrust exerted on the impeller.
Precautions for Using Balance Disks
When using a balance disc, the axial thrust can cause the pump shaft to shift toward the suction side, leading to contact and subsequent wear between the balance disc and the balance seat. To minimize wear, the number of pump starts and stops should be reduced as much as possible. To enhance the wear resistance of the balance disc and its mating seat, strict requirements apply to both the selection of materials and the heat treatment process, ensuring that the working surfaces have sufficient hardness. During operation, it is crucial never to block the return pipe that connects to the right side of the balance disc, because if the return pipe becomes blocked, the pressure difference between the two sides of the balance disc will disappear, and the balance disc will lose its ability to counteract the axial thrust. In routine maintenance, pay close attention to keeping the balance disc’s return pipe unobstructed and regularly inspect the balance disc and the lower balance seat for signs of wear. If wear becomes severe, replace these components promptly.
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Why choose us?
Changsha Zhonghlian Pump Industry Co., Ltd. was founded in 1989 and was independently established after the restructuring of Changsha Water Pump Factory. It is a comprehensive national high-tech enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Equity Exchange on December 31, 2019, with the abbreviation "Zhonghlian Pump Industry" and the equity code: 600275HN. It is currently a key backbone enterprise in China's centrifugal pump industry and one of the major professional manufacturers of multi-stage pumps in the country. The headquarters is located in Changsha City, Hunan Province, a historical and cultural city in China.
Square meters of land area
100% factory pass rate
Square meters of land area
100% factory pass rate
Q
What is your typical delivery time?
A
Models in stock can be shipped the next day at the latest. All others are custom-made, with lead times generally ranging from 7 to 90 days depending on the product size and project specifics. Please contact our sales manager for details: 0731-88632200 。
Q
Do you have centrifugal pumps in stock?
A
Centrifugal pumps come in numerous models and configurations. Except for a small number of high-volume, standard models that are in stock, the vast majority are not stocked and are customized products. We need to select a pump based on your site's flow rate, head, media temperature, pH value, and installation conditions, etc., to determine the pump model and configuration before we can submit an order to the factory for production.
Q
What information should I provide when requesting a quote?
A
Generally, to obtain an accurate quotation, we recommend providing us with the following information: pump flow rate, head, on-site operating voltage and frequency, temperature, pH value, and solid particle content of the fluid being conveyed, and on-site installation conditions (horizontal or vertical installation), etc.
If you are not sure, don't worry, our business managers will assist you in determining this.
Q
What products do you mainly produce?
A
Zhonglian Pump Industry manufactures various large industrial centrifugal pumps. Main products include: self-balancing multi-stage pumps, multi-stage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condensate pumps, etc.
Q
Why is it so slow to get a price quote?
A
Because centrifugal pumps are non-standard customized products with many models, the price range is also very large. Even for the same model, the price difference is also very large due to different materials and configurations. Taking the most common water pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clarify the relevant information to give you an accurate price. Normally, if you provide relatively comprehensive information, we can quote within 5 minutes.
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Hotline:
+86 0731-88632200
Export Trade/Technical Support:
+86 153-4831-2290
Head Office Email:
zoomlian@yeah.net
No. 210, Huanbao Zhong Road, Yuhua District, Changsha City, Hunan Province, Leowoju Wisdom Valley Building B, 8th Floor
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