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Having 26 series -312 varieties - over 1000 pump models
Focused on water pump research and development manufacturing for 36 years
Free training for operation and maintenance personnel/free installation guidance/free provision of installation drawings
FQW-type mine-use pneumatic submersible pump
Traffic: 8-48 m³/h
Head: 10-50m
Price: 0.06–56,800
The FQW-type mine-use pneumatic submersible pump features a compact structure, ease of mobility, convenient assembly and disassembly, simple maintenance, small size, strong wastewater discharge capability, large flow rate, and high head. It is suitable for drainage operations in environments where there is a risk of gas and coal dust explosions and can be widely used at any working face underground in coal mines to convey groundwater containing solid particles such as debris, coal dust, and silt.
Hotline:
Submersible pump
Horizontal Single-Stage Fire Pump
Product Parameters
Meaning of the FQW Model Mine-Use Pneumatic Submersible Pump Designation
Q: Mine-use pneumatic submersible pump
①: Code for the conveyed medium: w—wastewater (no indication for clear water)
②: Rated flow rate m³/h
③: Rated head (m)
④: Model Code: W:涡流 type (blade type is not indicated)
⑤: Hydro-turbine type designation code: K: Open type (closed type is not indicated)
Model example: FQW20-40/W. In this model, "FQW" stands for a mine-use pneumatic submersible pump designed for conveying sewage; the rated flow rate is 20 cubic meters per hour, and the rated head is 40 meters. The pump type features a closed impeller (water turbine). This product is classified as a pneumatic tool and is officially named the Mine-Use Pneumatic Submersible Pump.
Operating Environmental Conditions for FQW Mine-Use Pneumatic Submersible Pump
a) The surrounding air contains gas and coal dust;
b) The air pressure is (0.4–0.7) MPa;
c) The pH of the water is in the range of 4 to 10;
d) The volume ratio of solid impurities in the water exceeds 2%;
e) The density of water does not exceed 1.1 × 10³ kg/m³.
f) Operating environment temperature: (5~40)℃
Structural Features and Working Principle of the FQW Series Mine-Use Pneumatic Submersible Pump
The mine-use pneumatic submersible pump mainly consists of three parts: the pump body, the air motor, and the flow passage.
1. Pump Body Section: The pump body is divided into upper and lower chambers, separated by a sealing ring that isolates the air from the water. The sealing ring employs a spring-sealed design, and utilizes the pressure of both air and water to force high-pressure air and water into the inner walls of the upper and lower sealing rings, causing them to expand inward and thereby enhancing the sealing effect.
2. Pneumatic Motor Section: Composed of a rotor, turbine, upper and lower cylinders, bearings, and other components. Powered by compressed air, the turbine delivers an impact that drives the rotor to rotate at high speed and perform work.
3. Flow-through section: Composed of the turbine, pump cover suction port, pump base, and other components. The turbine is mounted on the rotor shaft in the lower cavity of the housing. Compressed air is fed into the inlet port, and as the rotor spins, it drives the turbine. Under the action of centrifugal force, the water inside the turbine is pressed into the discharge volute within the housing and then discharged through the outlet pipe.
Special structural point:
The FQW/W-type (formerly FWQB-type) pneumatic submersible pump for mining has broken through previous conventional design concepts by adopting a pneumatic turbine transmission and using compressed air as its power source. This new type of submersible pump overcomes the shortcomings of older pneumatic pumps, such as high noise levels, excessive air consumption, and low efficiency. It is widely applicable to mine shaft development, vertical shaft construction, and drainage operations in underground chambers. Its key features are:
1. Low noise, kept below 40 decibels;
2. Low air consumption and high efficiency;
3. Small in size, lightweight, with a compact structure, and easy to move;
4. Long service life, few wear parts, and easy maintenance.
Performance Parameters of FQW Series Mine-Use Pneumatic Submersible Pump
Pump model | Rated flow rate | Rated head | Working pressure | Gas consumption | Quality | External dimensions |
FQW20-25/W | 20 | 25 | 0.5 | 4.5~5 | 30 | 347×274×462 |
FQW70-30/W | 70 | 30 | 0.5 | 4.5~5 | 32 | 347×274×462 |
FQW20-40/W | 20 | 40 | 0.5 | 4.5~5 | 34 | 329×274×495 |
FQW40-20/W | 40 | 20 | 0.5 | 4.5~5 | 31 | 347×274×462 |
FQW25-50/W | 25 | 50 | 0.5 | 4.5~5 | 35 | 329×274×495 |
FQW30-18/W | 30 | 18 | 0.5 | 4.5~5 | 35 | 329×274×495 |
FQW50-25/W | 50 | 25 | 0.5 | 4.5~5 | 32 | 347×274×462 |
FQW48-12/W | 48 | 12 | 0.5 | 4.5~5 | 31 | 347×274×462 |
Friendly reminder: For more parameters of the mining submersible pump, please click → [Pump Selection] page to view.
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:
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Export Trade/Technical Support:
+86 153-4831-2290
Head Office Email:
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No. 210, Huanbao Zhong Road, Yuhua District, Changsha City, Hunan Province, Leowoju Wisdom Valley Building B, 8th Floor
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