Generally have two kinds of structure: first half open, is composed of a rear cover plate and blades, the structure, the efficiency of the Impeller lower, in order to improve the efficiency to be matched with a seal ring which can adjust clearance; another half open, is composed of a front cover plate and blades. The application and closed the same impeller sealing ring, efficiency and closed impeller is basically the same as the blades, and in addition to transport liquid, also has back blade or vice impeller seal. The semi open impeller is suitable for conveying liquid containing solid particles, fibers, etc.. Semi open impeller manufacturing is difficult, low cost, and adaptability, in the oil refining and chemical industry with a gradual increase in the application of centrifugal pump, and for the transport of water and water approximation of the liquid.
Photo of our Impeller:
Open impeller
Only blades and blades to strengthen the reinforcement, no front and back cover of the impeller (open impeller blade number less 2-5). Impeller efficiency is low, the application is less, mainly used for conveying high viscosity liquid, as well as slurry liquid.
Blade of centrifugal pump impeller is generally backward curved blade. There are two kinds of cylindrical and twisted, the application of twisted blades can reduce the load of the blade, and can improve the suction performance of centrifugal pump, improve the anti cavitation ability, but the manufacture is difficult, the cost is higher.
Centrifugal pump for oil refining and chemical industry requires impeller for casting or whole welding seam welding of the integral impeller. Special centrifugal pumps for chemical use in the manufacture of metal materials (such as iron and its alloys), which are used in the manufacture of poor performance, such as iron and its alloys. The geometric accuracy and surface finish of the welded impeller are superior to the casting impeller, which is beneficial to the improvement of the efficiency of the centrifugal pump.
Shape classification
Centrifugal impeller
The shape of the blade centrifugal fan impeller has several single plate, arc type and wing type etc.. Airfoil blade has good aerodynamic characteristics, high efficiency, good strength and stiffness. The disadvantage is that the manufacturing process is complex, and when the transmission of high dust concentration of the gas, the blade is easy to wear, blade wear, the impurities into the blade, so that the impeller lost balance and vibration. The flat straight blade is simple, but the flow characteristics are poor, and the efficiency is quite close to the efficiency of the other working conditions when the flat curve is compared with the airfoil blade, and the efficiency is lower than the highest efficiency point.
Forward impeller
The front impeller generally adopts circular arc blade, and the rear direction impeller, the large fan adopts the airfoil blade, and the wind turbine of the coal fired boiler with low dust removal efficiency can adopt the circular arc type or the flat plate type blade. The centrifugal fan with flat blade is more.
(a) flat blade; (b) arc narrow blade; (c) arc blade; (d) wing blade; (E) flat curve back to blade
Compression impeller
Working round. The only component of the air flow in a centrifugal compressor. The most important parts on the rotor. Generally by the wheel, wheel cover and blade and other parts of the composition. Under the action of the impeller blades, the rotating speed of the leaf rotation, the gas is affected by the centrifugal force of the rotation, as well as in the impeller of the diffuser flow, so that it can be improved through the pressure of the impeller.
Requirements for impeller
(1) can be given a larger energy; (2) gas flows through the impeller loss should be small, namely the gas flows through the impeller efficiency to be high; (3) gas outflow impeller parameters when appropriate, the gas flowing behind the fixing element flow loss is smaller; (4) type of impeller can make or overall performance curves of the stable operating region and the efficiency range is wide. Normally divided into closed, semi open and open type impeller.
The impeller is composed of a wheel hub and a blade in a wind turbine. The wind passes through the impeller, drives the impeller to rotate, which drives the generator to rotate, and the wind energy is converted into electric energy. At this time, the rotating impeller with large enough on the windward side, to extract enough energy from the wind; at the same time, when the wind speed is too large, can automatically adjust the blade windward angle to avoid due to the stress and mechanical damage.
Impeller material
Cast iron, bronze, stainless steel, manganese bronze, Monel alloy, INCONEL, and non metal materials.
Non metallic materials
PPS plastic, phenolic resin, etc..
Impeller Boat Impeller,Centrifugal Impeller,Marine Impeller,Water Pump Impeller Unisite Group Ltd. , https://www.shipsparts.nl
Product name Specification Material Steel Factory/Origin Price Today (yuan/ton) Yesterday Price (yuan/ton) Change (yuan/ton) High-line φ6.5-12mm Q235 Shougang 5150-5600 5150-5600 No-line φ6.5 -12mm Q235 Tangshan Steel 5150-5600 5150-5600 No change in height φ6.5-12mm Q235 Xuanhua 5150-5600 5150-5600 No change in high line φ6.5-12mm Q235 Handan Steel 5150-5600 5150-5600 No change in height Line φ6.5-12mm Q235 Bearing Steel 5150-5600 5150-5600 unchanged General Line φ6.5-12mm Q235 Shougang 5150-5600 5150-5600 unchanged General Line φ6.5-12mm Q235 Tangshan Steel 5150-5600 5150-5600 No change in the general line φ6.5-12mm Q235 Xuanhua 5150-5600 5150-5600 No change in the general line φ6.5-12mm Q235 Stannum Steel 5150-5600 5150-5600 No change in the general line φ6.5-12mm Q235 Steel 5150- 5600 5150-5600 Constant Rebar φ12-14mm HRB335 Shougang 5450-5460 5500-5510 Drop 50 Rebar φ16-25mm HRB335 Shougang 5220-5250 5270-5300 Drop 50 Rebar φ12-14mm HRB335 Tanggang 5450-5460 5500-5510 Fell 50 rebar φ16-25mm HRB335 Tang Steel 5220-5250 5270-5300 fell 50 rebar φ12-14mm HRB335 Xuanhua 5450-5460 5500-5510 fell 50 rebar φ16-25mm HRB335 Xuanhua 5220-5250 5270-5300 fell 50 Rebar Φ16-25mm HRB335 Bearing Steel 5220-5250 5270-5300 Drop 50 Rebar φ28-32mm HRB335 Xuan Steel/Shougang 5300-5350 5350-5400 Drop 50 Third-Order Thread φ12-14mm HRB400 Shougang/ Chenggang 5650-5660 5700-5710 50 Three-stage thread φ16mm HRB400 Shougang/Shougang 5400-5450 5450-5500 Drop 50 Three-stage thread φ20mm HRB400 Shougang/Shougang 5400-5450 5450-5500 Drop 50 Three-stage thread φ25mm HRB400 Shougang/Shougang 5400-5450 5450-5500 Dropped 50 three-stage thread φ28mm HRB400 Shougang/Shougang 5500-5510 5600-5610 fell 100 three-level disc Ø8-10mm HRB400 Shougang 5300-5310 5350-5360 fell 50 three-stage disc Ø8-10mm HRB335 Shougang 5300-5310 5350- 5360 fell 50 cold rolled sheet 0.5*1000*2000 ST12 angang 7050-7100 7050-7100 unchanged cold rolled sheet 0.7*1000*2000 ST12 Bengang/ Angang 7050-7100 7050-7100 unchanged cold rolled sheet 1.0*1000*2000 ST12 Benxi Steel/Angel Steel 7050-7100 7050-7100 Constant Cold Rolled Sheet 1.2*1000*2000 ST12 Bengang Steel/Angel 7050-7100 7050-7100 Constant Cold Rolled Sheet 1.5*1000*2000 ST12 Bengang/Angel 7050-7100 7050-7100 constant cold rolled sheet 2.0*1000*2000 ST12 Bengang/Angel 7050-7100 7050-7100 constant cold rolled sheet 3.0*1000*200 0 ST12 Bengang Steel/Anshan Iron and Steel 7150-7200 7150-7200 Constant Hot Rolled Plate 2.0*1250*C Q235 TISCO 6400-6450 6400-6450 Constant Hot Rolled Plate 2.75*1250*C Q235 Tangsteel/TISCO 6100-6150 6100-6150 constant hot rolled sheet 3.0*1250*C Q235 Angang/TISCO 5950-6000 5950-6000 constant hot rolled sheet 3.0*1500*C Q235 Tangshan/Shanhua 5950-6000 5950-6000 constant hot rolling Plate 4.75*1250*C Q235 Tang Steel/clad steel 5400-5450 5400-5450 Constant hot-rolled steel plate 5.5*1500*C Q235 Tangshan Steel/clad steel 5350-5400 5350-5400 Constant hot-rolled steel plate 11.5*1500*C Q235 Tangshan Iron & Steel / Baotou Steel 5350-5400 5350-5400 unchanged plate 6mm Q235B Sky Steel 6700-6750 6700-6750 unchanged plate 8mm Q235B Sky Steel 6220-6230 6220-6230 unchanged plate 10mm Q235B Day Steel 5890-5900 5890-5900 Unchanged Plate 12mm Q235B Sky Steel 5760-5770 5760-5770 Unchanged Plate 14-20mm Q235B Sky Steel 5700-5710 5700-5710 Unchanged Plate 16-20mm Q235B Steel 5900-5910 5900-5910 No change in plate 16-20mm Q235B Stanchium Steel 5900-5910 5900-5910 Nodular plate 3.0mm Q235 Taigang 6250-6300 6250-6300 Nodular plate 4.0mm Q235 Taigang 6250-6300 6250-6300 Invariable Diamond Plate 5.0mm Q235 TISCO 6250-6300 6250-6300 Invariant tread plate 6.0mm Q235 TISCO 6250-6300 6250-6300 Invariant boiler plate 6mm 20g New steel 7550 7550 Invariable boiler plate 8mm 20g Anyang Steel 7450 7450 Invariable boiler plate 10mm 20g Anyang Steel 7250 7250 Boiler Plate 12mm 20g Anyang Steel 7300 7300 Invariable Boiler Plate 14-20mm 20g Anyang Steel 7200 7200 Constant Container Plate 6mm 16MnR Jinan Steel 8130-8140 8130-8140 Constant Container Plate 8mm 16MnR Jinan Steel 7940-7950 7940-7950 Container Plate 10mm 16MnR Jinan Steel 7740-7750 7740-7750 Constant Container Plate 12mm 16MnR Jinan Steel 7350-7360 7350-7360 Constant Container Plate 14-20mm 16MnR Jinan Steel 7340-7350 7340-7350 Constant Low Alloy Plate 25-30mm Q345B Shougang 5750-5800 5750-5800 unchanged low alloy plate 14-20mm Q345B Shougang 5800-5850 5800-5850 unchanged low alloy plate 30-40mm Q345B Angang 6150-6200 6150-6200 unchanged color coated 0.326*1000* C SGCC Langfang 8350-8360 8350-8360 Constant Color Coated Panel 0.426*1000*C SGCC Langfang 8000-8050 8000-8050 Constant Color Coated Panel 0.476*1000*C SGCC Xinyu 7850-7900 7850-7900 Invariable Color Coated Panel 0.476*1000*C SGCC Langfang 7850-7900 7850-7900 Invariable Color Coated Panel 0.5*1000*C TST01 Baosteel 8450-8500 8450-8500 Unchanged Coated board 0.6*1000*C TST01 Baosteel 8400-8450 8400-8450 Invariable Coated board 0.5*1200*C TST01 Masteel 8100-8150 8100-8150 Invariable galvanized board 1.0*1000*C JY150 Wuhan Iron and Steel 6950 6950 unchanged Galvanizing plate 1.0*1000*C STO2Z Benxi Steel 6950 6950 Invariable galvanized sheet 0.7*1000*C STO2Z Benxi Steel 7100 7100 Invariable galvanized sheet 0.7*1000*C JY150 Wuhan Iron and Steel 7050 7050 Invariable galvanized sheet 0.5*1000 *C SGCC Hengtong 7050 7050 unchanged channel 8/10#*8mm Q235 Jinan Steel 5550 5550 unchanged channel 16#*8mm Q235 Jinan Steel 5300 5300 unchanged channel steel 28#*12mm Q235 Laiwu Steel 5350 5350 unchanged angle steel 63*6 Q235 Anyang 6230 6230 No change in angle 50*5 Q235 Shougang 5350 5350 No change in profile 25# Q235 Laiwu Steel 5550 5550 No change I-beam 36# Q235 Laiwu Steel 5550 5550 No change I-beam 40# Q235 Baotou Steel 5700 5700 unchanged H-beam 100*100**6*8 Q235 Laiwu Steel 5650 5650 unchanged H-beam 150*150*7*10 Q235 Laiwu Steel 5100 5100 unchanged H-beam 300*300*10*15 Q235 Horse Steel 5950 5950 unchanged H-beam 400*400*13*21 Q235 Masteel 6200 6200 unchanged H-beam 500*200*10*16 Q235 Masteel 5800 5800 unchanged H-beam 700*300*13*24 Q235 Masteel 6050 6050 invariable welded pipe 1 inch 3mm Lida/Huaqi/ Youfa 6140-6150 6140-6150 Invariable welded pipe 1.25 inch 3.25mm Lida/Huaqi/Youfa 6100-6110 6100-6110 Invariable welded pipe 1.5 inch 3.25mm Lida/Huaqi/Youfa 6100-6110 6100-6110 Invariable welded pipe 2 inch 3.5mm Lida/Huaqi/Youfa 6100-6110 6100-6110 Invariable welded pipe 2.5 inch 3.75mm Lida/Huaqi/Youfa 6100-6110 6100-6110 Invariable welded pipe 3 inch 3.75mm Tat/Huaqi/Youfa 6100-6110 6100-6110 Invariable welded pipe 4 inch 3.75mm Lida/Huaqi/Youfa 6050-6060 6050-6060 Invariable welded pipe 5 inch 4.0mm Lida/Huaqi/Youfa 6050 -6060 6050-6060 Invariable welded pipe 6 inch 4.0mm Lida/Huaqi/Youfa 6170-6180 6170-6180 Invariable welded pipe 8 inch 5mm Lida/Huaqi/Youfa 6220-6230 6220-6230 Seamless Tube 108*4.5 20# Ansteel 7700 7700 Seamless tube 133*4.5 20# Angang 7550 7550 Seamless tube 159*5 20# Angang 7500 7500 Seamless tube 325*9 20# Steel 9100 9100 No Change seamless tube 273*7 20# Baotou Steel 9000 9000 Constant seamless tube 377*10 20# Baotou Steel 9000 9000 Invariable galvanized pipe 1-1.25 inch 3mm Tianjin Lida 7250-7260 7250-7260 Invariable galvanized Tube 1.5 inch 3.25mm Tianjin Lida 7150-7160 7150-7160 Uniform galvanized tube 2 inch 3.25mm Tianjin Li Up to 7150-7160 7150-7160 Uniform galvanized pipe 2.5 inch 3.75mm Tianjin Lida 7150-7160 7150-7160 Uniform galvanized pipe 3 inch 3.75mm Tianjin Lida 7150-7160 7150-7160 Uniform galvanized pipe 4 inch 4mm Tianjin Lida 7150-7160 7150-7160 Uniform galvanized pipe 5 inch 4mm Tianjin Lida 7190-7200 7190-7200 Uniform galvanized pipe 6 inch 4mm Tianjin Lida 7350-7360 7350-7360 Invariable galvanized pipe 8 Inch 5mm Tianjin Lida 7390-7400 7390-7400 unchanged