Pump Knowledge Encyclopedia 1. What is a pump? A: Usually to enhance the liquid, liquid delivery or to increase the pressure on the liquid, that is, the mechanical power of the original liquid into liquid energy machines collectively referred to as the pump. 2. Pump classification? A: The use of different pumps, according to the principle can be divided into three categories: 1. Positive displacement pump 2. Vane pump 3. Other types of pumps 3. Volume pump works A: The use of cyclical changes in the volume of work to transport liquids , For example: Blue pole international agency Ingersoll-Rand piston pump, piston pump, diaphragm pump, gear pump, skateboard pump, Shanghai Blue pole distribution Grundfos Screw pump. 4. Vane pump working principle? A: The use of blade and liquid interaction to transport liquids, such as: centrifugal pump, mixed flow pump, axial flow pump, blue pole electromechanical distribution of the vortex pump 5. Centrifugal pump works? A: Centrifugal pumps depend on the action of the impeller on the liquid to transfer the mechanical energy of the prime mover to the liquid. As the role of centrifugal pump fluid from the impeller inlet to the outlet of the process, its speed and pressure energy can be increased by the impeller discharge liquid through the pressure chamber, most of the speed can be converted into pressure energy, and then along the discharge line Out, at this time, the impeller inlet due to the discharge of liquid to form a vacuum or low pressure, the liquid in the suction tank under the surface pressure (atmospheric pressure) is pressed into the impeller inlet, so the rotating impeller continuous Inhalation and discharge of liquids 6. Centrifugal pump features? A: Its characteristics are: high speed, small size, light weight, high efficiency, large flow, simple structure, stable performance, easy operation and maintenance; its shortcomings are: before starting the pump to be filled with liquid. Liquid accuracy of the pump performance, can only be used for the accuracy of the fluid approximation of water, flow rate range: 5-20000 cubic meters / hour, the lift range of 3-2800 meters. 7. Centrifugal pump divided into several types of structure? Their own characteristics and uses? A: Centrifugal pump according to its structure is divided into: vertical pumps and horizontal pumps, vertical pumps are characterized by: small footprint, small construction investment, easy installation, disadvantages are: high center of gravity, not suitable for fixed foot Occasion running. Horizontal pump Features: Wide range of applications, low center of gravity, good stability, the disadvantages are: large area, the building into a large, bulky, heavy weight. For example: vertical pump ISG vertical centrifugal pump, DL vertical multi-stage pump, submersible pump. Horizontal pump with ISW pump, D-type multi-stage pump, SH double suction pump, B type, IH type, BA type, IR type and so on. According to the requirements of head flow and impeller structure according to the composition of the series is divided into: A. Single-stage single suction pump: pump has an impeller, impeller on a suction port, the general flow range: 5.5-300m2 / h, H in 8-150 Meter, small flow, low head. B. Single-stage double suction pump: The pump is an impeller, two suction ports on the impeller. Flow Q in 120-20000 m2 / h, head H in the 10-110 meters, large flow, low head. A. Single suction multi-stage pump: The pump is a plurality of impellers, the discharge chamber of the first impeller is followed by the second impeller suction inlet, and so on. What is ISG vertical pump, its structural features? A: The ISG vertical pump is a kind of single-stage suction centrifugal pump. It belongs to the vertical structure. Because the import and export of the ISG vertical pump is on the same straight line with the same import and export, the ISG vertical pump is similar to a pipe and can be installed anywhere in the pipe. Named ISG vertical pump, structural features: a single-stage single suction centrifugal pump, the same import and export and in the same straight line, and the axis of the line perpendicular to the vertical pump. 9. ISG vertical pump structural features and advantages? A: ISG Vertical Centrifugal Pump structural features, advantages: First: the pump is vertical structure, the motor cover and pump cover conjoined design, compact appearance, and covers an area of ​​small, low-cost construction, such as the use of Outdoor motor can be placed outdoors. Second: the same import and export of pumps, and located in the same centerline, the same as the valve can be installed directly on the pipe, the installation is extremely easy. Third: clever foot design to facilitate the installation of a solid pump. Fourth: the pump shaft for the motor shaft, to solve the conventional centrifugal pump and motor shaft coupling drive and bring serious vibration problems. Pump shaft installed a stainless steel sleeve. Fifth: The impeller is installed directly on the motor shaft, the pump is running without noise, the motor bearings with low noise bearings, so as to ensure the machine running low noise, greatly improving the use of the environment. Sixth: Wang Quan pump shaft seal with mechanical seal, to solve the conventional centrifugal pump packing seal caused serious leakage problems, seal the static ring and moving ring made of titanium alloy silicon carbide, tungsten carbide, enhanced sealing Life, to ensure that the workplace dry and tidy. The seventh pump cover left a bleed hole, the lower side of the pump and flange on both sides are provided with a drain hole and pressure gauge hole, to ensure the normal use and maintenance of the pump. Eighth: unique structure so do not need to remove the pipe system, as long as the removal of the pump nut can be overhauled, overhauling extremely convenient. 10 new vertical pump divided into several categories and their mutual common? And their purpose? A: A, ISG single-stage single suction vertical water pump. For industrial and domestic water supply and drainage, high-rise building pressurization, water heating, refrigeration and air conditioning cycle, industrial pipeline pressurized transportation, cleaning, water supply equipment and boilers. Use temperature ≤80. C. B, IRG single-stage single suction heat pump. For metallurgy, chemicals, textiles, wood processing, paper and restaurants, bathrooms, hotels and other high-temperature boilers circulating booster, the use of temperature ≤ 120. C. C, IHG single-stage single suction chemical pump. For textile, petroleum, chemical, pharmaceutical, health, food, oil and other industrial chemical transmission pipeline pump. It is the ideal product of conventional oil pump. It is suitable for transporting oil, flammable and explosive liquids in the oil depots, oil refineries, chemical industry and power units of enterprises and institutions. C or less. E, GRG high temperature type; F, IHGB stainless steel explosion-proof type; G, YG oil pump type; H, ISGD low speed type.
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