WQ Type Cast Iron Municipal Sewage Pump for Agricultural Irrigation and River Water Transportation

Basic Structure: The basic construction of the centrifugal pump consists of six main components, namely the impeller, pump housing, pump shaft, bearings, sealing ring, and stuffing box.

Blade Wheel

The impeller is a critical component of the centrifugal pump, featuring high speed and great power. The blades on the impeller play a major role. The impeller must undergo a static balance test before assembly. The inner and outer surfaces of the impeller must be smooth to minimize water flow friction losses.

Pump shaft

The shaft of the pump serves to connect the coupling and motor, transferring the torque from the motor to the impeller. Thus, it is the main component for transmitting mechanical energy.

Pipe centrifugal pump bearing

This is a component that fits onto the pump shaft and supports it, available in two types: rolling bearings and sliding bearings. Rolling bearings use cow oil as a lubricant; the oil should be added appropriately, generally 2/3 to 3/4 of the volume: too much can cause overheating, while too little will produce noise and heat! Sliding bearings use transparent oil as the lubricant, with the oil level reached to the line. Too much oil may leak along the pump shaft and scatter, while too little can overheat the bearing, leading to damage and accidents! During the operation of the water pump, the bearing temperature typically runs around 60 degrees with an average of 85 degrees. If it's higher, investigate the cause (such as impurities, oil quality turning black, or water ingress) and handle it promptly!

Sealing Ring

Also known as a leakage reducer. Excessive gap between the impeller inlet and the pump casing can cause water in the high-pressure area of the pump to flow through this gap to the low-pressure area, affecting the pump's flow rate and efficiency! Too small of a gap can lead to friction and wear between the impeller and the pump casing. To increase backflow resistance, reduce internal leakage, and extend the service life of the impeller and pump casing, a sealing ring is installed at the junction of the inner edge of the pump casing and the outer edge of the impeller. The sealed gap should be maintained between 0.25 to 1.10 mm.

Filling bush

Primarily composed of packing, water seal rings, packing cylinder, packing cover, and water seal pipe. The function of the packing chamber is mainly to seal the gap between the pump casing and the pump shaft, preventing the water inside the pump from leaking out and also keeping external air from entering the pump. Always maintain a vacuum inside the water pump! When heat is generated due to friction between the pump shaft and the packing, the water seal pipe channels water to the water seal ring to cool the packing! Ensuring the normal operation of the water pump. Therefore, during the routine maintenance checks of the water pump, special attention should be paid to inspecting the packing chamber. It is recommended to replace the packing after approximately 600 hours of operation.

Application

Vertical hot water pumps are suitable for metallurgy, chemical industry, textile, wood processing, papermaking, as well as for boiler high-temperature hot water boosting circulation in restaurants, bathrooms, hotels, etc., and for heating circulation in urban housing. They operate at temperatures below 120°C.

2. Vertical high-temperature centrifugal pumps are used for: energy, metallurgy, chemical industry, textiles, papermaking, as well as for increasing the pressure and circulating hot water in boilers for restaurants, bathrooms, hotels, etc. Suitable for pipe pumps used in urban housing heating circulation with temperatures below 240°C.

3. Vertical PipelineChemical PumpSuitable for conveying liquids without solid particles, corrosive in nature, and with a viscosity similar to water, this product is applicable to industries such as petroleum, chemical, metallurgy, electricity, papermaking, food, and synthetic fibers. The operating temperature range is -20℃ to 120℃.

Installation Notice

(1) The base surface must be flat, clean, and capable of withstanding the corresponding load; (2) Anchor bolts must be used at points where fixation is required.

(3) For vertically installed pumps, the foundation bolts must be of sufficient strength.

(4) If vertically installed, the motor must be above the pump.

(5) When installing on the wall, ensure proper alignment and centering.

Product Features

1. Hydraulic Model: Performance.

2. Easy Installation and Maintenance: Pipe-mounted installation allows for the进出口 to be installed like valves at any position and direction along the pipe, making installation and maintenance extremely convenient.

3. Aesthetically pleasing design: Made with stainless steel exterior, ensuring an attractive appearance.

4. Lower operational and maintenance costs: Utilizes mechanical seals, ensuring no leaks, long service life, low failure rate, and reduced operational and maintenance expenses.

5. Noise Reduction: Hydrodynamic component design, excellent flow performance, significantly reduces flow noise.

6. Vertical structure, with minimal land area.