Self-Priming Pump

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SLZG series high-efficiency self-priming pump

SLZG high-efficiency energy-saving self-priming pumps are widely used in steel, metallurgy, petroleum, chemical, electric power, environmental protection, municipal, construction and other industries. This series of products with temperature resistance, pressure resistance, wear resistance, "a drainage, lifelong self-absorption" and other functions. It is the most ideal equipment to replace the original various long shaft pumps, submersible pumps, etc. Using high-efficiency hydraulic model and unique structural design, the pump efficiency is much higher than that of ordinary self-priming pumps. Is a variety of long-axis submersible pump, sewage pump, sewage pump and the original ordinary self-priming pump ideal replacement and upgrading products.

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Product overview

SLZG high-efficiency energy-saving self-priming pumps are widely used in steel, metallurgy, petroleum, chemical, electric power, environmental protection, municipal, construction and other industries. This series of products has the advantages of temperature resistance, pressure resistance, wear resistance and so on.

This type of water pump is reliable and adopts no leakage sealing device, which is composed of power seal and auxiliary seal. It replaces the packing seal and mechanical seal of the traditional water pump, and completely solves the problems of "running, running, dripping, and leaking" of the traditional seal. It is the most ideal equipment to replace the original various long shaft pumps, submersible pumps, etc. Sealless self-control self-priming pump in the process of operation of the sealing device without friction, no wear, long service life. Transplant the principle of vacuum pump self-priming performance is stable and reliable, especially the use of electric air control valve, the real realization of "a drainage, lifelong self-priming" and other functions.

Using efficient hydraulic model and unique structural design, pump efficiency is much higher than the ordinary self-priming pump, supporting motor power than the ordinary self-priming pump reduced one to three gears, with a very significant energy-saving effect. Is a variety of long-axis submersible pump, sewage pump, sewage pump and the original ordinary self-priming pump ideal replacement and upgrading products.

This series of products adopt brand-new structural designs such as outlet, gas-liquid separation chamber, guide body and inlet, which ensure the height of liquid in the guide body and self-priming performance under the premise of not obviously increasing flow loss. Instead of traditional water pumps using "vacuum pump-assisted priming" and other methods to realize self-priming, advanced "soda-water separation method" is adopted to make them have self-priming performance in structure; at the same time, the new design of high-life automatic control valve to completely eliminate the siphon phenomenon, the real realization of "a drainage, life-long self-priming"

This series of products adopts advanced CFD technology to systematically optimize the design and calculation verification of overcurrent components. In addition, the newly developed special sealing structure reduces sealing loss by more than 95%, reducing its power by 1-3 gears compared with traditional products of the same specification, and its efficiency index is basically the same as that of ordinary clean water pumps.

This series of products adopt a new structure. On the basis of not replacing the pump seat, the replacement of self-priming pumps of different specifications is realized by replacing the impeller, guide and other parts, which greatly reduces the replacement cycle and reduces the replacement cost.

With superior automatic control function, it can be used with high-tech fields and highly automated systems.

Pump cavitation performance (suction performance) is better than ordinary self-priming pump.

The flow parts are made of wear-resistant materials, and the impeller is made of high anti-cavitation damage materials, and the service life of the pump is longer.

This series of products adopt unique structural design to eliminate axial force, which is beneficial to improve the service life of the pump.

Using unique sealing technology, reliable sealing and longer service life.

Small vibration, low noise, flexible movement, easy disassembly, easy installation, no need to anchor fixed.

Model meaning

Working conditions

Speed: 2950r/min,1480r/min,980r/min

Suction discharge diameter: 50-500mm

Rated flow: 7.5-2500m ³

Rated lift: 10-125m

Suction height: 4-7m

Temperature range: ambient temperature is generally ≤ 45 ℃, maximum liquid temperature ≤ 80 ℃

Medium: clear water or liquid with physical and chemical properties similar to clear water

Product features: self-priming performance is reliable, the real realization of "a drainage, life-long self-priming"

Material: cast steel, cast iron

Product Structure

Working principle

SLZG type non-sealed automatic self-priming pump is mainly composed of pump body, impeller, pump cover, guide vane, auxiliary impeller, pump shaft, connecting frame, electric air control valve and other parts. The pump body consists of a suction chamber, a liquid storage chamber and a gas-liquid separation chamber. After the pump starts normally, the impeller sucks the liquid stored in the suction chamber and the air in the suction pipeline together. The liquid mixed gas is discharged into the gas-liquid separation chamber through the guide vane under the centrifugal force of the high-speed rotation of the impeller. Due to the sudden decrease of the flow rate, the specific gravity of the gas and the liquid is different, and the lighter gas is separated from the mixed liquid and excluded from the pump, the degassed liquid re-enters the working chamber and the air sucked in from the suction pipeline inside the impeller is mixed again. Under the rotation of the impeller, a certain degree of vacuum is quickly formed at the inlet of the pump body, so as to achieve the purpose of self-priming. Since the pump has a unique exhaust function, the pump can transfer liquid containing gas and does not need to install a bottom valve. The pump is equipped with an electric air control valve. During operation, the control valve is closed to achieve sealing. After shutdown, the control valve is opened to destroy the vacuum in the suction pipeline and prevent the liquid in the pump chamber from flowing out of the suction pipeline due to siphon effect after shutdown. Ensuring that enough liquid is stored in the pump chamber to continue the next self-priming process, thus realizing the first drainage and permanent self-priming.

Energy saving comparison table of important parameters

Industry Applications

Suitable for steel, metallurgy and other industries

Suitable for oil and other industries

Suitable for electric power and other industries

Suitable for environmental protection and other industries

Suitable for municipal engineering, etc.

Suitable for construction and other industries
Our products are widely used in metallurgy, mining, electric power, coal, petroleum, chemical, environmental protection, building materials, municipal and other industries, long-term service in the domestic well-known high-end customer base, including: china Huadian, China Datang Group, Datang International, China Huaneng, China SDIC, China Guodian, Hebei Iron and Steel Group, Shandong Iron and Steel Group Rizhao Iron and Steel, Kunming Iron and Steel, Baotou Iron and Steel, Benxi Iron and Steel Group, Tianjin Iron and Steel Group, Jiuquan Iron and Steel, Kunming Iron and Steel, Handan Iron and Steel, Hebei Xuangang, Anyang Iron and Steel, Tangshan Iron and Steel Group, Donghai Iron and Steel Group, Yanshan Iron and Steel, etc.

Application of SLZG high efficiency and energy saving self priming pump in iron and steel, metallurgy, petroleum, chemical industry, electric power, environmental protection, municipal administration, construction and other industries