Slurry pump various selection formula formula Slurry pump selection formula is listed in the industry standard, the symbols are unified. 1) Typical slurry method Piping characteristics: Hf = H + (1 + ξ) (V ^ 2) / (2g) slurry Hmo = ΔΗ + 0.72Ko (Vl ^ 2) + 0.58Ko Hs = HR + 0.72Ko (Vl ^ 2) + 0.58Ko (V ^ 2) Clean water Hs = Hs * HR 2) Coal preparation plant method 1 Piping characteristics: Clean water Hf = ΔH + iL + Body Hmo = ΔΗ + imL + 2 Characteristics of the pump: Slurry Hm = ΔΗ + imL + 2 Water Hs = H / Km 3) Ash Removal Method Pipeline characteristics: Clear water Hf = ΔH + 1.05iL Slurry Hmo = ΔΗγm + 1.05imL Characteristics of the pump slurry Hm = 1.1Hmo water Hs = Hs * γm * Km 4) Tailings calculation method Pipeline characteristics: water Hf = ΔH + iL + Σhi slurry Hmo = ΔΗγm + imL + Σhi Pump characteristics: Hm = ΔΗγm + imL + Σhi Clear water Hs = Hs * γm * Km * Kh 5) Fill mining method Pipeline characteristics: Clear water Hf = ΔH + 1.05iL + Σhi slurry Hmo = ΔΗγm + imL + Σhi Pump characteristics: Slurry Hm = ΔΗγm + imL + Σhi Clear water Hs = Hs * Km * Kh 6) Metallurgical mine method Pipeline characteristics: Clear water Hf = ΔH + iL + Σhi slurry Hmo = ΔΗγm + imL + Σhi Pump characteristics: slurry Hm = ΔΗγm + imL + Σhi Clear water Hs = Hs * γm * Kh Symbols and significance of Hf, Hmo, Hm, Hs Hs pipe water Head of the head and the slurry, the head of the slurry and the head of the fresh water; ΔH head loss; L pipe length; i, im friction coefficient of water and slurry; Kh = 1-0.25Cw γm slurry specific gravity; Ko = H / (V ^ 2), water calculation pipeline head and the ratio of the speed of the square. Vl critical sedimentation velocity. Km = Hm / (Vm ^ 2) slurry calculated pipe head and the ratio of the speed of the square.
Wire thread inserts are helically coiled fastening devices that provide permanent, wear-resistant screw threads that exceed the strength of most parent material; the inserts are designed to protect tapped holes against failures due to stripping, seizing, corrosion, and wear.
Threaded inserts are typically used when the object in which a threaded fastener is being installed is made of a soft material. For hard materials, a screw or bolt can be often driven into the object without the need for a threaded insert. A simple solution is to use a threaded insert.
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