First, the desulfurization pump
Desulfurization pump is usually a horizontal cantilever single-stage single-suction centrifugal pump, which is specially designed and developed for conveying corrosive media containing fine particles. The common material of desulfurization pump is plastic pump (the common material is UHMW PE, etc. ) and metal pump (common materials are Cr30, 2507, etc. ), and the overflow material requires wear resistance, corrosion resistance and impact resistance (because there is no valve at the outlet of desulfurization pump, in order to prevent the huge water hammer effect of liquid, the pump body is required to resist impact). It is a kind of pump that can adapt to various working conditions, such as conveying acid, alkali clear liquid or slurry; Various corrosive pulp in smelting industry; Various dilute acids in sulfuric acid industry; All kinds of sewage in environmental protection industry. The pump is corrosion-resistant and wear-resistant, and has a wide range of applications.
Desulfurization pump has the following characteristics:
1) Strong wear resistance: All the overcurrent components are made of steel-lined ultra-high molecular weight polyethylene (UHMW-PE), and the wear resistance of UHMW-PE ranks first among plastics, which is 4 times higher than that of nylon 66(PA66) and polytetrafluoroethylene (PTFE) and 7- 10 times higher than that of carbon steel and stainless steel.
2) Strong impact resistance: the impact strength of ultra-high molecular weight polyethylene ranks first among general engineering plastics, which is five times that of (acrylonitrile/butadiene/styrene) * * * polymer (ABS), and it can still remain stable at-196℃, which is a characteristic that other plastics do not have.
3) Excellent corrosion resistance: The pump can withstand various corrosive media (acid, alkali, salt) and organic solvents within a certain temperature and concentration range, and soak in 80 kinds of organic solvents at 20℃ and 90℃ for 30 days. There is no abnormality in appearance and almost no change in other physical properties.
4) No noise: The impact energy absorption of UHMWPE is the highest among plastics, and it has good sound attenuation performance, thus minimizing the noise generated by liquid flow during transportation.
5) Safe and reliable, without toxin decomposition: UHMW-PE used in this pump has extremely stable chemical properties, so it is also suitable for food industry.
6) Low friction coefficient: the internal friction coefficient of the pump is only 0.07-0. 1 1, which is self-lubricating. Under the condition of water lubrication, its dynamic friction coefficient is half lower than that of PA66 and POM. When working in sliding or rotating mode, it has better lubricity than steel and brass plus lubricating oil.
7) Good anti-sticking: UHMW-PE has excellent anti-sticking ability, which is equivalent to PTFE, so it is also outstanding when transporting some high-viscosity media.
The performance of desulfurization pump is as follows:
1) corrosion and wear resistance, multi-purpose for one pump, and suitable for acid-base clear slurry.
2) The pump body is made of steel-lined ultra-high molecular weight polyethylene with a thickness of 8 ~ 20 mm, and the pump adopts patented plastic lining technology. Compared with other similar pumps, the pump has the advantages of thermal deformation resistance, cracking resistance, anti-falling, high service temperature and so on.
3) There are two kinds of impellers: separated impellers and closed impellers, which can be selected according to the media conditions.
4) Seals: K-type dynamic seal, K 1 type dynamic seal, T-type packing seal, T 1 type packing seal and C3-type nonstandard seal.
5) Applicable media: sulfuric acid with concentration below 80%, nitric acid with concentration below 50%, hydrochloric acid with various concentrations, liquid alkali, clear liquid and slurry.
4. Main technical parameters: the service temperature is -20℃ ~ 90℃ (which can be increased to above 100℃ by using modified materials), the inlet diameter is 32 mm ~ 350 mm, the flow rate is 5 ~ 2600 m3/h, and the lift is within 80m.
Second: Slurry pump
Slurry pump belongs to centrifugal pump in working principle. Conceptually, it refers to a machine that increases the energy of solid-liquid mixed medium by centrifugal force (rotation of pump impeller) and converts electric energy into kinetic energy and potential energy of medium. Mainly applicable to: mines, power plants, dredging, metallurgy, chemicals, building materials and petroleum industries. The name of slurry pump is a kind of centrifugal pump from the perspective of conveying medium. In addition, slurry pumps can be divided into different types from different angles. Besides pumping water, the water pump can also pump gas, solid and solid-liquid mixture-mineral powder slurry! The electricity consumption of pumps accounts for a large proportion of the total electricity consumption in China, and the energy saving of pumps has an important impact on the national economy. Water pump not only plays an active role in energy saving, but also plays an important role in thermal power generation and emission reduction. Slurry pump not only saves 4%-8% energy than similar products, but also helps to get rid of smog.
Slurry pump generally refers to a pump suitable for conveying suspended solids in liquid (water). At present, it is one of the indispensable equipment in each technological process of mineral processing and coal preparation plants. Slurry pumps can be divided into single/multi-stage, single/double suction, cantilever, horizontal/vertical and horizontal/vertical combined pump housings. Its basic structure consists of impeller, pump shell, pump shaft, bearing and bracket, power also includes motor, counter wheel or pulley coupling, wear-resistant parts also include bushing, sealing parts include shaft seal and auxiliary impeller, and supporting parts include bracket. The blades make the medium rotate rapidly, and the rotating medium flies out of the impeller under the action of centrifugal force. After the medium in the pump is thrown out, a vacuum zone is formed in the center of the impeller, and the medium is pressed into the feed pipe through the pipe network under the action of atmospheric pressure (or water pressure). In this way, continuous feeding can be realized, so as to achieve the lift and flow required by the process design. Of course, most of the current feeding methods are press-in, that is, the material level is higher than the feeding pipe, so the step of injecting water into the interior from the upper water pipe or pump casing can be omitted.
I hope it helps you.