Noticias

The Most Popular Characteristics of Slurry Pumps

1. High lift,large flow

At present, the maximum discharge diameter of the centrifugal slurry pump has been developed to more than 1000mm, the flow rate is about 20000m/h, the single-stage lift is more than 100m, the diameter of the back shrinking non-clogging pump is 600mm, the lift is 100m, and the flow rate is 10000m/h. The maximum diameter of the slurry pump produced by Shijiazhuang Zhongqiang Industrial Pump is 550mm, Q=9500m3/h, and the maximum diameter of the non-clogging sewage pump is 800mm, Q=7200m3/h.

2. Long life and high efficiency

Slurry pumps are mostly used to transport solid-liquid mixtures (slurry) containing abrasive solid particles, so the service life is a key issue for slurry pumps.

Judging from the service life of the site, the slurry pump ofWarman Company in Australia has a service life of 4000~5800h when conveying concentrates with a weight concentration of 60%; the conveying mixture has a relative density of 1.52 for heavy medium coal preparation, and its service life is more than 8000h; it is used for Power plant ash removal, the life is usually more than 10000h.

The GMA type slurry pump of GouldsCompany in the United States transports the magnetic powder mixture with a relative density of 1.8 and a particle size of 200 mesh, accounting for 80%, and the impeller life is as high as 9000. A company in Japan has a 6-inch sand pump with a life span of 7000h.

The sand pump produced by Shijiazhuang Zhongqiang Industrial Pump Co.,ltdwith a diameter of 150mm transports heavy medium washing coal with a relative density of 1.52 and has a service life of 11200h. The requirements for slurry pumps, in addition to long life and reliability, are energy saving and high efficiency.

3. Wide variety and wide performance

In order to meet the requirements of conveying different media in different departments, Zhongqiang Industrial Pumps has launched products with complete varieties and specifications, a wide range of performances and strong applicability. Judging from the types of impurity pumps, in addition to the types of slurry pumps, there are also mortar pumps, gravel pumps, dredging pumps, solution pumps, foam pumps, submerged pumps, pulp pumps, submersible sewage pumps, and non-clogging sewage pumps. All kinds of pumps, which can be metal pumps, rubber-lined pumps (plastic-iron interchangeable), or ceramic pumps, etc.

The slurry pump has complete specifications and a wide range of performance.

A type of pump has different impeller diameters in addition to different speeds.

For example, the CK×8×10 type strong abrasive slurry pump of American Goulds Company has the performance of four speeds of n=965r/min, 870r/min, 700r/m1n and 580r/min, and when n=965r/min The performance curves of impeller diameter D2=24.5 inches, 22 inches, 20 inches and 18 inches can meet the needs of different users.

Another example is the ZWP100-250 non-clogging sewage pump produced by Shijiazhuang Zhongqiang Industrial Pump, which adopts different speeds, different impeller diameters and different impeller types, and has a wide range of performance.

This kind of pump has three speeds of n=2900r/m1n, 1450r/m1n and 960r/m1n, the impeller diameter D2=260mm, 230mm, 200mm and l80mm, the impeller forms are K (non-clogging type), N (multi-blade), F There are four types (retracted type) and O (open type), with a total of 48 specifications, which are suitable for the needs of different departments to transport different media.

4.High degree of ternary

The three-dimensionalization (standardization, generalization, and serialization) of slurry pump parts and products is getting higher and higher. Shijiazhuang Zhongqiang Industrial Pump adopts modular design, which is conducive to processing, production and operation management, and improves product level and economic benefits.

The degree of generalization reflects the level of product technology to a certain extent.

The slurry pump produced by Australian Warman Company has only 9 kinds of bearing bodies, which can meet the needs of 6 series, 81 varieties and nearly 1,000 specifications of products; Warman slurry pump, one bracket can install 3~8 kinds of pumps Head; ZWP100-250 type non-clogging sewage pump A pump body can be installed with several impeller forms and impellers of different diameters, with a high degree of generalization.

Domestic and foreign slurry pump products have formed a series, and the degree of serialization is also very high.

Such as slurry pump heavy and light series, dredging pump series, sewage pump series, submersible sewage pump series, etc., all have different specifications.

5.High concentration, long distance

With the development of pipeline hydraulic conveying technology, the concentration of conveying slurry is getting higher and higher, and the conveying distance is also getting longer and longer. This requires slurry pump products to be both wear-resistant and high-pressure resistant. The slurry pump conveys the slurry concentration, as mentioned above, from the past C=40%~50% to the present Cm=65%, and some reach C=70%.

The conveying distance is from several hundred meters to several kilometers, or longer. This requires several pumps to be used in series. For example, 7 sets of 20/18TH-AHP slurry pumps of Warman Company of Australia are used in series, and Cm=30%~40% titanium tailings are transported in Chuanhana Steel Company, Minnesota, USA, the distance is 9.7km, and the outlet pressure is 2400kPa. The ZHR/100RP type slurry pump produced by Shijiazhuang Zhongqiang Industrial Pump is connected in series with 9 stages. It is used in the desulfurization system of the power plant. It transports slurry with a concentration of 40%, and the distance is 5km,pressure 4.2MPa.

6.Multi-material, multi-variety

Domestic and foreign slurry pump manufacturers and scientific research institutions attach great importance to the development and application of wear-resistant materials. In addition to a series of nickel-based, chromium-based and nickel-chromium-based alloy wear-resistant materials and rubber-based materials, some companies have recently successfully developed quenched cast iron, a new series of hypoeutectic and hypereutectic high-chromium wear-resistant and corrosion-resistant white Alloy cast iron and high manganese copper white alloy cast iron as well as duplex stainless steel and precipitation stainless steel and other materials.

The emergence of these new materials not only greatly reduces the cost, but also broadens the field for different slurry applications. At the same time, some manufacturers began to study various plastic materials such as polyurethane and nylon and sintered ceramic materials from the perspective of economy, and applied them in certain occasions, and achieved good results.

Recently, as-cast high-manganese copper alloy white iron was introduced abroad, using cheap and resource-rich copper alloy elements to replace more expensive alloy additives such as nickel elements in brine slurry containing abrasive solid particles, Shows good anti-wear and anti-corrosion properties.