Sewage pumps are suitable for the discharge of serious industrial waste water from factories, sewage discharge stations in residential areas, drainage systems in urban sewage treatment plants, drainage stations in air defense systems, water installations in waterworks, sewage discharge in hospitals and hotels, municipal construction sites, Exploration, mining and auxiliary equipment, rural biogas pools, farmland irrigation and other industries, conveyor belt particles of sewage, dirt, but also for clean water and corrosive media.
The sewage pump impellers are all different.
The AS tearing submersible sewage pump has an open impeller.
The sewage pump impeller is generally composed of a hub, a blade and a cover plate. The cover of the impeller is divided into a front cover and a rear cover. The cover on the inlet side of the impeller is called the front cover, and the cover on the other side is called the rear cover.
Closed impeller
Both sides of the impeller are covered with 4 to 6 blades between the covers. When the blade bending direction is opposite to the rotation direction of the impeller, it is called a shield-bend blade. The blades of the general impeller are backward curved blades. This closed impeller is more efficient and the most widely used.
Open impeller
There are no cover plates on both sides of the impeller, and the blades are connected to the hub through ribs. The impeller has a simple structure and is easy to manufacture but has low efficiency, and is suitable for conveying liquids containing more solid suspensions or fibers.
Sodium hydroxid,with the chemical formula NaOH, is commonly known as caustic soda. It is a strong alkali with strong corrosivity, generally in the form of flakes,pearls or lumps.Industrial grade Caustic Soda contains a small amount of sodium chloride and sodium carbonate, and is white translucent crystal.Its aqueous solution has an astringent and creamy feel.Sodium hydroxide is prone to deliquescent in the air, so solid sodium hydroxide is often used as a desiccant.It is very soluble in water and emits a lot of heat when dissolved. It`s also soluble in ethanol and glycerin.
Sodium hydroxide (NaOH) is extremely versatile. Used in the production of paper, soap, dyes, rayon, metal smelting, petroleum refining, cotton fabric finishing, coal tar product purification, and food processing, wood processing and machinery industries.
The product is a strongly alkaline substance which belong to 8 grade dangerous goods. with strongly irritating and corrosive, dust or smoke can irritate the eyes and respiratory tract, corrode the nasal septum, direct contact between the skin and eyes and NaOH can cause burns, and misuse can cause digestive tract burns, mucosal erosion, bleeding and shock.So it`s highly corrosive and requires the "corrosive item" mark.
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