All posts by cn612

11Jul/17

Hot oil pump impeller is introduced

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We often see on hot oil pump impeller balance hole, but I don’t know balance hole the size of the number is based on what to order?Impeller to distance to balance hole on the back of the role of the influential? Hot oil pump impeller balance hole is primarily balance of axial force, which is associated with sealing ring gap.We know that heat pump axial force is derived from the differential pressure of impeller front and back cover.Because the former carries oil inlet, botou haina is a complete plane, the area of different pressure is generated by the pressure differential.If the force is not big, the bearing can withstand, could be solved through bearing.When multi-stage pump, or impeller is too large, the axial force is not the bearing, we must take other corresponding axial force balancing mechanism.Such as the balance disc, balancing drum, balance hole, etc.Balance hole has simple structure, convenient processing is a commonly used equilibrium structure.We know that the pressure difference between before and after impeller cover plate, the main influence factor is the front cover for the oil inlet hole, the area is small a piece, so the HouGaiBan must have a sealed chamber, its area is roughly the same as the inlet area (in order to convenient manufacturing, before and after taking ring is the same, you can save a parts).Thus HouGaiBan the balance holes should be sealed room, from the hot oil pump impeller inlet direction, balance hole should be set in the hot oil pump impeller import parts (favorable) liquid.In order to make the machine to receive strength evenly in the impeller, balance hole should be in the same uniform in diameter.Balance hole size, because the flow is mainly the action of the balance holes static pressure, so the balance hole diameter is not big, usually 3 to 5 mm. Writer：china pump

11Jul/17

Multistage centrifugal pump operation & maintenance

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operation: In the use of stainless steel multistage centrifugal pump, the first to determine the purpose and multistage pump performance parameters and choose the pump type.The principle of multistage pump and basis: 1, make the selected multistage pump type and performance in accordance with unit capacity and head, pressure, temperature, NPSH, the requirement of the process parameters such as suction. 2, multistage pump must meet the requirements of dielectric properties. (1) for conveying inflammable, explosive or toxic or valuable medium pump, require no leakage of pump shaft sealing is reliable or adopted, such as magnetic pump (without shaft seal, driven by magnetic isolation type indirect); (2) the multistage pump forhandling corrosive mediums, convection components with corrosion resistance materials, such as fluorine plastic corrosion pump; (3) for conveying multi-stage pump, containing solid particles medium for convection part adopts wear-resisting material, use clean liquid wash shaft seal when necessary. 3, mechanical aspects of multistage pump of high reliability, low noise, small vibration. 4, correct calculation of multistage pump procurement costs, including purchasing cost and maintenance cost. maintenance: (1), check whether there is any loose phenomenon on multistage pump pipe road and the junction.Turn the multistage pump with the hand, and proved the multi-stage pump is flexible. (2), the bearing body join bearing lubrication oil, should observe the oil level in oil mark the centerline, lubricating oil should be timely replacement or supplement. (3), unscrewed the multistage pump pump body of water diversion plug, water perfusion (or plasma). (4), close out of the water gate and export of pipeline pressure gauge and imported vacuum gauge. (5), the motor running, and proved the motor steering is correct. (6), multi-stage pump stopped for a long time, the pump must be opened entirely, dry the water, will turn the parts packed and junction coated with grease. (7), try to control the capacity and head of the multistage pump, within the scope of the specified on the sign to ensure that the multistage pump running at peak efficiency, to achieve maximum energy saving effect. (8), multi-stage pump in the process of operation, bearing temperature cannot exceed environment temperature to 35 c, the highest temperature should not exceed 80 c. (9), in case of abnormal sound of a multistage pump should immediately stop check. (10), multi-stage pump to stop using, first close the gate valve, pressure gauge, then stop the motor. (11), multi-stage pump in the first monthsRead More…

26Jun/17

China Hot Oil Pump History

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Hot oil pump start from 2001, after 5 years of development, China hot oil pump industry started from its early into the growth period.Since the 1970 s, hot oil pump industry has entered a golden age, the study of hot oil pump work in all countries of the world attaches great importance to, such as the international energy agency and the European Union, have made a big hot oil pump development plans, hot oil pump new technology emerge in endlessly, the purpose of the hot oil pump is also in constant development, widely used in air conditioning and industrial areas, in terms of energy saving and environment protection plays a significant role.Before the international energy agency set up international heat pump center, the project set up hot oil pump, to countries in the world to promote coordination of heat pump technology application and development.The United States, Canada, Sweden, Germany, Japan, Korea and other countries have a special government official guidance, promote social application of heat pump technology. China hot oil pump industry rapid development, the theory of hot oil pump originated in the early 19th century French scientists saadi.Botou Haina Pump Industry CO.,Ltd manufacture hot oil pump,Cano (Sadikarnot), cano in 1824 for the first time in this paper puts forward that “carnot cycle” theory, 30 years later, a British scientist kelvin (l. elvin) in early 1850, put forward: frozen device can be used for heating, after a lot of work on many of the scientists and engineers to heat pump, the last 80 years.On the one hand, thanks to the nervous energy heat pump energy saving advantage more and more obvious, on the other hand, with the addition of various power industry technology innovation. China hot oil pump manufacturer：Botou Haina Pump Industry CO.,Ltd   If you have any needs, please contact  haina@cn-haina.com

26Jun/17

China Three Screw Pump’s Development

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Three phylogeny and working principle of screw pump,china three screw pump‘s development, to the present botou haina pump a large enterprise brilliant. A, about the history of the three screw pump: German resistance chi company is the world’s first inventor of the three screw pump Warren is located in Massachusetts, in 1890 invented the world’s first double three screw pump Houttuin company is located in the Netherlands, in 1929, invented the first pair of three screw pump Three screw pump was invented in 1931 by the Swedish company IMO and manufacturing Has a history of 153, in 1934, designing and manufacturing the world’s first external bearing double three screw pump Founded in 1956 to potow Pump valve group is botou haina pump industry CO., Ltd’s predecessor, is the birthplace of the first three screw Pump in our country.Second, the working principle of single three screw pump.Botou Haina Pump Industry CO., Ltd is a large-scale enterprise specializing in the production of china three screw Pump.Its products are widely used in petroleum, chemical and other production-oriented enterprises.Three single screw pump is a kind of method of eccentric rotary positive displacement pump, pump of the main components: a single head screw rotor and a usually made of elastic material has a pun spiral stator, when the rotor is scheduled to give a planet revolving round the axis of the stator inside the cavity, airtight wrist is formed between the stator along the spiral rotor displacement;So will continuous medium, uniform, and the constant volume from the suction to the pressure side, based on the characteristics of single working condition of three screw pump is particularly suitable for the following work. Transport high viscosity medium: depending on the size of the pump can transport from 37000-200000 centipoise medium viscosity. Medium containing particles or fibers: grain diameter can this 30 mm (no more than the rotor eccentricity).Fibre length can be 350 mm (0.4 quite a bit of rotor pitch).Its content can be up to 40% of the medium cellar general solid if the medium is the fine powder shape, the highest content of 60% or higher can also transport.Require delivery pressure stability, inherent media structure destroyed, choose single three-screw pump delivery is most ideal. Related Products：twin screw pump ， Asphalt Screw Pump ， Three Screw Pump With Jacketed

24Jun/17

Chemical Pump Manufacturers

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Chemical pump manufacturer and chemical pump for sale:china botou haina pump Industry CO.,Ltd Type:IH IHF CQ CQB CQB-F ZMD UHB-ZK…… Material:stainless steel or ptfe Type:Centrifugal pumps or gear pumps Chemical pump USES: Open pump, the suction pipe and pump must be filled with liquid.After open pump, high-speed rotating impeller, the liquid with the blades rotate together, in under the action of centrifugal force, fly away from the impeller to injection, injection of the liquid in the pump shell gradually spread of indoor speed slow, pressure increase gradually, and then from the pump discharge, the discharge pipe flow.At this point, in the center of the blade due to liquid was dumped into the surrounding formation is no air and no liquid vacuum low pressure area, fluid in the pool liquid under the action of atmospheric pressure on surface of the pool, the suction pipe into the pump, the liquid is continuously from the liquid pool was sucking up and continuously from the discharge pipe flow. According to the different chemical pump material classification on its application fields 1) chemical pump (stainless steel) is widely used in petroleum, chemical industry, metallurgy, synthetic fibre, pharmacy, food, synthetic fiber and other departments for alkaline corrosion medium; 2) chemical pump (fluorine plastic material) used for conveying any acidic and alkaline corrosion medium; 3) chemical pump (cast iron material) used for industry, urban water supply, water drainage, can also be used in farmland, orchard irrigation and drainage, for conveying water or other liquids similar to water physical and chemical properties. Chemical pump classification according to the transmission medium 1) water pump: including the fresh water pump, boiler feed pump, condensate pump, hot water pump. 2) corrosion resistant pump, including stainless steel pump, high silicon cast iron pump, ceramic acid pump, not permeability graphite pump, hard rubber, hard polyvinyl chloride (PVC) pump, shield pump, diaphragm pump, titanium pump, etc. 3) impurity pump: including pulverized coal slurry pump, sand pump, sewage pump, pump, ash pump, etc. 4) the oil pump, oil pump cold, heat pumps, submersible pump, slurry pump, liquid hydrocarbon pump, etc.   Different models have different chemical pump manufacturers.Please provide the flow, head and other data.Contact us.