HomeProductsCombination of diesel engine pump and fire pumpDiesel engine pump and fire pump combination
Combination of diesel engine pump and fire pump

Diesel engine pump and fire pump combination

The non-clogging submersible sewage pump is a unit in which the pump and motor are integrated and operate while fully submerged in the liquid. Compared to conventional horizontal or vertical sewage pumps, this type features a compact structure and a small footprint. Installation and maintenance are convenient; large-scale models are typically equipped with automatic coupling devices that facilitate automatic installation, making the process highly efficient. They offer long continuous operating times. Because the pump and motor share a common shaft—resulting in a shorter shaft and lighter rotating components—the radial load on the bearings is relatively low, leading to a significantly longer service life than that of standard pumps. Issues such as cavitation damage and the need for priming are eliminated; the latter, in particular, offers great convenience for operators. These pumps operate with low vibration and noise, exhibit minimal motor temperature rise, and cause no environmental pollution.

Flow range 6-800m³/h
Head range 14-80m
Ambient temperature ≤50℃
Medium temperature ≤80℃
Medium specific weight ≤1050kg/m³
Total length of suction pipe ≤10m
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Product Advantages

  • Efficient Operation

    · Features a unique single- or dual-vane impeller design capable of effectively passing fibrous materials up to five times the pump inlet diameter and solid particles with diameters up to approximately 50% of the inlet diameter.
    · Utilizes a new type of hard, wear-resistant tungsten carbide material for the mechanical seal; the seal configuration has been upgraded to a double-face design, enabling safe, continuous operation for over 8,000 hours.

  • Safe and Reliable

    · Equipped with a high-precision, anti-interference water leakage detection sensor in the seal oil chamber and thermal sensing elements embedded in the stator windings, ensuring comprehensive protection for the pump motor.
    · Can be paired with a fully automatic safety protection control cabinet to provide complete protection against water leakage, electrical leakage, and motor overload, thereby enhancing product safety and reliability.

  • Intelligent Control

    · The float switch automatically controls the starting and stopping of the pump based on changes in liquid level, eliminating the need for manual supervision and offering great convenience in use.
    · It can operate across the entire head range while ensuring the motor does not become overloaded.

Detailed Description

Product Description

This skid-mounted integrated fire pump unit adopts dual-power redundant configuration, consisting of electric main fire pumps, diesel engine emergency standby pumps and a vertical pressure-maintaining jockey pump, equipped with integrated inlet and outlet manifolds, complete valves, flexible connectors, pressure gauges and pressure stabilizing tank.

Under normal power supply, the electric pump provides stable water supply for fire hydrant and sprinkler systems. When power failure or system pressure loss occurs, the diesel pump automatically starts to ensure uninterrupted firefighting water supply. The jockey pump maintains pipeline standby pressure and avoids frequent startup of main pumps.

Compact all-in-one base structure simplifies on-site installation and piping connection. Fully compliant with international fire protection standards, it is widely used in high-rise buildings, industrial workshops, warehouses, commercial complexes and large public facilities.

Performance Parameters

ModelBore Size
(mm)		Rated Flow Rate
(m³/h)		Head
(m)		Motor Power
(kW)		Rotational Speed
(r/min)		Efficiency
(%)
25-8-22-1.1258221.1282538.5
32-12-15-1.13212151.1282540
40-15-15-1.54015151.5284045.1
40-15-30-2.24015302.2284048
50-20-7-0.75502070.75139054
50-10-10-0.755010100.75139056
50-20-15-1.55020151.5284055
50-15-25-2.25015252.2284056
50-18-30-35018303288058
50-25-32-5.55025325.5290053

Product Structure Diagram

Product Use

Suitable for transporting sewage and waste containing particles in industries such as chemicals, petroleum, pharmaceuticals, mining, papermaking, cement manufacturing, steelmaking, power generation, and coal processing, as well as in municipal sewage treatment plant drainage systems, municipal engineering projects, and construction sites.

FAQs：

  • 1

    What liquids can the WQ Non-Clog Sewage Pump handle?

    The WQ Non-Clog Sewage Pump is designed to transfer wastewater, sewage, sludge, rainwater, industrial wastewater, and other liquids containing solid particles or short fibers. It is not recommended for highly corrosive chemicals unless a suitable material such as stainless steel is selected.
  • 2

    Can the pump handle wastewater containing long fibers?

    Yes. The wide-channel impeller is designed to reduce clogging caused by fibers and suspended solids. For wastewater containing a large amount of long fibers, we can also recommend cutter-type or vortex impeller models.
  • 3

    Is the pump suitable for continuous operation?

    Yes. The motor is designed for continuous-duty operation (S1) under normal working conditions. Proper installation and operation within the recommended performance range will ensure reliable long-term service.

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