The UHB desulfurization slurry circulation pump is a cantilever single-stage, single suction centrifugal pump, and its flow components are made of steel lined ultra-high molecular weight polyethylene structure, which has strong corrosion resistance and excellent wear resistance. It can transport various acidic, alkaline, and salt slurries such as sulfuric acid with a concentration of less than 80%, nitric acid with a concentration of less than 50%, hydrochloric acid, etc., as well as various corrosive mortars in the rare metal smelting industry and mixed media in the food spraying industry.

1、 Overview of UHB desulfurization slurry circulation pump

The UHB corrosion-resistant and frosted slurry pump series products are designed specifically for conveying media with certain corrosiveness and containing fine particles or crystals. They are manufactured using steel lined ultra-high molecular weight polyethylene compression molding technology, which has excellent corrosion resistance and wear resistance. The structural design is a cantilever front opening, and the impeller is semi open (without a front cover plate), enhancing the passage of particles and impurities in the medium quickly through the pump chamber without blockage. The shaft seal is a K-type fluororubber sealing ring with a cooling water jacket, which meets the dual requirements of corrosion resistance and wear resistance. This series of products has received high praise from users in industries such as metal smelting, titanium dioxide, fine chemicals, and fertilizers. In addition, fluoroplastic lining can be used according to customers' special corrosion or temperature resistance requirements, and non-standard models with special flow rates and head can also be customized.

2、 Characteristics of UHB desulfurization pump

The UHB-ZK desulfurization slurry circulation pump is a type of pump that can adapt to various working conditions, such as transporting acid, alkaline clear liquid or slurry; Various corrosive slurries in the smelting industry; Various dilute acids in the sulfuric acid industry; Various types of wastewater in the environmental protection industry. This pump is both corrosion-resistant and wear-resistant, and has a wide range of applications.

Has the following characteristics: 1) Strong wear resistance: All overcurrent components are made of steel lined ultra-high molecular weight polyethylene (UHMW-PE), which has the highest wear resistance among plastics, four times higher than nylon 66 (PA66) and polytetrafluoroethylene (PTFE), and 7-10 times higher than carbon steel and stainless steel.

2) Strong impact resistance: Ultra high molecular weight polyethylene has the highest impact strength among general engineering plastics, which is five times that of acrylonitrile/butadiene/styrene copolymer (ABS), and can maintain stability at minus 196 ℃, a characteristic that no other plastic has.

3) Excellent corrosion resistance: The pump can withstand various corrosive media (acids, bases, salts) and organic solvents within a certain temperature and concentration range. It can be immersed in 80 types of organic solvents at 20 ℃ and 90 ℃ for 30 days. There are no abnormal phenomena on the surface, and other physical properties have hardly changed.

4) No noise: Ultra high molecular weight polyethylene has the highest impact absorption capacity among plastics, with good noise reduction, thus minimizing the noise generated by liquid flow during transportation.

5) Safe and reliable, non-toxic decomposition: The pump uses ultra-high molecular weight polyethylene (UHMW-PE) with extremely stable chemical properties, making it also suitable for use in the food industry.

6) Low friction coefficient: The internal friction system of the pump is only 0.07-0.11, indicating self-lubricating properties. Under water lubrication conditions, its dynamic friction coefficient is half that of PA66 and polyoxymethylene (POM). When working in sliding or rotating form, the lubricity is better than that of steel and brass with lubricating oil added.

7) Good anti adhesion: Ultra high molecular weight polyethylene (UHMW-PE) has excellent anti adhesion properties, comparable to PTFE, and therefore performs outstandingly when transporting media with high viscosity.

III UHBDesulfurization pumpScope of use

1) Sulfuric acid phosphate fertilizer industry: transportation of dilute acid, mother liquor, sewage, seawater, fluorosilicic acid containing silica gel, phosphoric acid slurry and other media.

2) Nonferrous metal smelting industry: particularly suitable for the transportation of various acid liquids, corrosive slurry, slurry (used for filter presses), electrolyte, sewage and other media in wet metallurgy of lead, zinc, gold, silver, copper, manganese, cobalt, rare earths, etc.

3) Chemical and other enterprises: positions for various sulfuric acid, hydrochloric acid, alkaline, and oil liquids or slurries. Production of titanium dioxide, iron red powder, various dyes and pigments, non-metallic mineral processing and other industries.

4) Chlorine alkali industry: hydrochloric acid, liquid alkali, electrolyte, etc.

5) Water treatment industry: pure water, high-purity water, wastewater (leather wastewater, electroplating wastewater, electronic wastewater, papermaking wastewater, textile wastewater, food wastewater, domestic wastewater, pharmaceutical wastewater, etc.).

6) Steel companies: positions for sulfuric acid and hydrochloric acid in pickling systems

7) Wet desulfurization circulating pump: capable of simultaneously applying to alkaline, acidic, and corrosive positions.

8) Transportation of corrosive liquids and coal slurry in the coal industry and coal chemical industry; Coal washing is equipped with a pump.

4、 Schematic diagram of UHB desulfurization slurry circulation pump structure

5、 Working principle of UHB desulfurization pump

The K-type power seal is mainly composed of a secondary impeller (or secondary blade) and a parking seal (rubber oil seal). During operation, the centrifugal force generated by the rotation of the secondary impeller (or blades) causes the sealing chamber to be in a negative pressure state, thereby preventing liquid leakage outward. At this time, the parking seal does not work. The lip of the rubber oil seal is loosened due to negative pressure, creating a certain gap with the shaft sleeve, reducing wear between them and extending their service life; When the machine is stopped, the secondary impeller (or secondary blade) stops rotating, and the sealing chamber changes from negative pressure to positive pressure. The parking seal begins to work, and the lip of the rubber oil seal tightly wraps around the shaft sleeve under pressure, thus achieving the sealing purpose. If cooling water is allowed to infiltrate into the medium, a K-type power seal with cooling water can be selected, which can add an external cooling water device to extend the service life of the oil seal. The sealed oil seal is made of fluororubber and is mainly suitable for conveying corrosive media such as slurry containing solid particles and sewage containing impurities (the cooling water used for K-type power seals with cooling water is clean tap water, with a suitable pressure within 0.05Mpa).

6、 Performance parameter table of UHB desulfurization slurry circulation pump