Horizontally mounted motor with pulleys and V belts is used when rotational speed of shaft of agitator is not the same as that of motor. Agitator Shaft Diameter Calculator: This tool is used for Calculating Shaft Diameter for Transmitting Desired Power Requirement for Agitation Process. You can select Safety Factor for calculation of shaft diameter. EN8: Shear Stress 55.0 Elastic Limit 246.0 IFRAME is also available it more easy to be used in our interface by all your team. Mechanical Seal: Mechanical Seal is similar to stuffing box, but in this mechanical seals are provided in place of packing rings. Stuffing Box: Stuffing Box has two shells. gasket calculator, The Width of the gasket equals the width of the cover / flange (a=b). You can select 4 types of materials for shaft. It is not always possible to use a standard centrifugal pumps stuffing box to seal the shaft of a centrifugal pump. My program then calculates maximum Bending Moment is at the end of shaft, Average Bending Moment at the end of shaft and Polar modulus of the shaft in cubic mm. You can select 4 types of materials for shaft. You can round up diameter of the impeller as per your requirements. of Agitator on one Shaft in Vessel. My program then calculates pumping rate. On the other hand calculation methods have been developed to model the behaviour of mechanical packing, but these have never been linked to actual leakage and mechanical behaviour of the packing in a real stuffing box. After all, inputs click on Calculate Button to Get Shaft Diameter then Popup Notification is highlighted with Desired Shaft Diameter in mm. Stainless Steel: Shear Stress 50.0 Elastic Limit 230.0 Power requirement increases with higher pitch angle. The top rings are pressed from top by a ring. Output Speeds of 1000 rpm Motor with Gearbox are : 200, 133, 100, 80, 67, 50, 40, 33, 29, 25, 20, 17, 14. A stuffing box is a type of seal that prevents fluids from leaking inside of machine parts. My program then recalcuates Diameter of Impeller based on Critical Speed, and indicates recommended Impeller OD for Critical Speed. Diameter of Impeller: Diameter of impeller depends on diameter of tank. Arrangement for greasing the bearings is provided for both bearings. Power number, which decides power required for mixing, is 5.0. 3 or 4 packing rings are installed in this gap at bottom, followed by latern ring on top and 3 or 4 packing rings on top. Calculate Stuffing Box Pressure. Stuffing Box Design and Installation of Compression Packings The importance of packing glands correctly cannot be over-emphasised. There are more complex impellers like helical screws, cones and high speed discs. PackApp is an innovative web software for the calculation of land- and sea-based transports. Hub is installed on the shaft by shaft key and grub screw. He had worked in many Fabrication Industry from small workshop to MNC Company. Power number, which decides power required for mixing, is 1.35 for 3 bladed, 1.4 for 4 bladed, 1.45 for 5 bladed, 1.5 for 6 bladed impeller. Calculation of Diameter of Impeller. This DC resistance has an influence on total Q facto Qts and, therefore, needs to be considered. These have tip speeds between 300 to 500 meters per minute. If the shaft RPM is less than 300, based on the absorbed power (output power of gearbox) and output RPM of gearbox, My program selects gearbox. Horizontal gearbox and motor coupled by pulleys and V belts then matches rotational speed of shaft of agitator with the output speed of gearbox. You can choose these per your requirements. In this app agitation power requirement for all types of Blades is calculated and it also used for Agitator Shaft Design Checking for Critical Speed and Elastic Limits for Design Safety. My program then calculates diameter of shaft. Stuffing Box fits diectly on top of closed vessel inside the stool on base plate. Marine Propeller, Axial Flow Turbine, Turbo Propeller, Disc Blade turbine, Flat Blade Turbine, Backward turned turbine, Paddle, Anchor, Anchor/Paddle or Gate. Polished Rod Stuffing Box Packing; Rubber Products. Rated Power. Absorbed Power in HP = (specific gravity * 1000 * number of impellers * power number * (shaft rpm / 60.0)3 (impod / 1000.0)5 * 1.1 * 1.2) / (9.81 * 75.0) Horizontally mounted motor with pulleys and V belts: Horizontally mounted motor with pulleys and V belts is mounted on the side of stool. Material of construction for wetted parts can be Stainless Steel, Carbon Steel or other metals and alloys. You can choose mixing time as per your requirements. These are used to mix liquids with low viscosity. It should be noted this calculation will yield a conservative estimate of stuffing box pressure that can be further reduced by pump design. While complex ordering can, in some cases, lead to stacking slightly more items, it is also more difficult for the people fi… More than 8 Years of Professional Experience in Field of Pressure Vessel, Heat Ex changer, Storage Tanks, Piping and other Process Equipment Fabrication Industry. and after dismissing this notifier Design Checking for Critical Speed and Elastic Limit Option is Open. In Double mechanical seal unit, one mechanical seal is at top and one mechanical seal at bottom. My program then calculates Critical Speed of Impeller. Tip speed of impeller = 175 meters per minute, or 500 feet per minute. Force at the end of impeller blade, Fm = Bending Moment / (0.75 * 0.5 * Impeller Dia) Stainless Steel: Shear Stress 50.0 Elastic Limit 230.0 Based on geometry of vessel, many factors for impeller can be decided. Agitator Speed depends on tip speed of impeller. This is a fairly simple container loading calculator: it allows you to calculate how many items of the same dimensions and weight (optional) you can fit in a single shipping container. Side entering are installed in storage tanks having large diameters (more than 10 meters), with non-corrosive liquids, especially in tanks which store Crude Petroleum. Double Bearing Housing is prefered as double bearing housing reduces deflection of shaft. Assembly of Stuffing Box, Bearing Housing, and Top and Bottom Stools. The following steps have been devised to ensure effective installation of packings on … Founder and CEO of Let'sFab Educational Services. All other impellers are of fabricated construction and can be either Bolted or Welded type. Agitator is located off-center if some part of vessel is occupied by internal coil or some other internal. Type of Agitator: Generally agitator is mounted vertically at the top of the tank. Double mechanical seal is used in case of vessels having high vacuum inside or if vapours are corrosive. Output Speeds of Direct coupled Motor are : 1500, 1000, 750. Author of Book " Master in Fabrication Layout Development " Published worldwide. This App is Useful for those who are working in Process Equipment Manufacturing and Agitation and Mixing Equipment Manufacturing Industry. For Vigourous mixing, time required for total mixing can be few seconds. Harry LaBour, the inventor of the Self Priming pump, was very proud of the stuffing box design (below) that has proven to be trouble-free with a minimum of maintenance. Impellers: There can be following simple Impellers. If you are looking for Various other useful fabrication Apps for your daily fabrication activity then Click here…. Shape and size of tank: Vertical cylindrical vessel is the best type for installing an agitator. This speed is easier to achieve with motor/gearbox combination. For Flat Blade Turbine, the length of blade is 25% of diameter, and disk diameter is 60% to 70% of the diameter of impeller. Premium Rubber; Reinforced Rubber; Custom Molded Products; Diaphragms. In this app agitation power requirement for all types of Blades is calculated and it also used for Agitator Shaft Design Checking for Critical Speed and Elastic Limits for Design Safety. Version : 1.4 Agitator Type : Top Entry Design Code : EEUA Options available : Motor Position : Vertical and Horizontal Shaft Seal : Single & Double Mechanical and Stuffing Box Vessel Type : With and Without Baffle Material : SS304, SS304L, SS316, SS316L, C22, CS and Custom to add The diameter of impeller is 25% to 60% of tank diameter. My program then indicates Final values after calculation of Critical Speed, Shaft RPM, Impeller Diameter and Shaft Diameter. Directly coupled horizontal gearbox and motor is used when rotational speed of shaft of agitator is same as output speed of gearbox. After selection of Agitator Blade Types from the list and Press Calculate Button to Generate Result Output. Bending Moment = Torque * Safety Factor [in N-mm] Vertically mounted geared motor: Vertically mounted geared motor is mounted on top of stool. For Axial Flow Turbine and Turbo Propeller, the angle of blade varies from 30 degrees (for less viscous liquids) to 60 degrees (for more viscous liquids). Pumping factor, which decides flow rate of mixing, is 0.07. In this Tool you have to enter Internal Pressure in N/mm2, Shaft Diameter in mm, Permissible stress for Stuffing Box Material in N/mm2, No of Studs, and Permissible Stress for Stud Material then it will give result as S.B ID, OD, Thickness and Stud Diameter. Cooling water flows in outer shell, which keeps the packing rings and lantern ring cool. 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