Vortex pump classification and use

Vortex pump is from the pump in the future appeared in 1920, an important layout of the vortex pump includes the impeller, pump body, pump cover, and the annular flow channel formed by them. The transport medium from the suction pipe into the runner, through the impeller rotation to get energy, was delivered to the pipe extrusion, the pump to complete the course. Vortex pump direct whirlpool pump is used to suck water and physical and chemical properties similar to the water used, the use of liquid temperature shall not exceed 60 ℃, commonly used in boiler feed water supporting, in shipbuilding, textile, chemical, metallurgy, machinery manufacturing , Aquaculture, fixed fire prevention and pressure regulator, heat exchange unit, remote irrigation and other agricultural departments have a wide range of applications. Vortex pump operating principle, structure and characteristics of the shape of the centrifugal pump and other types of pumps are not the same. The following for everyone to bring the classification and purpose of the vortex pump. Closed vortex pump 1, closed vortex pump Structure: mainly by the impeller, pump body, tongue formation. Figure 1 flow path at both ends (or one end) connected with the import, known as the open flow path. Impeller open balance hole for balancing axial force. The liquid enters through the inlet and makes vertical vortex motion driven by the impeller to obtain energy, which is discharged from the outlet. The liquid near the outlet side leaves back to the pump inlet with the impeller. 1, Impeller; 2, Pump housing; 3, Tongue; 4, Flow passage; 5, Balance hole 2, Closed vortex pump Features (1) Closed self-priming pump is not self-priming, . The inlet gas mixes into the vane groove with the liquid. Because the liquid and the gas have different density, the liquid with high density is thrown to the outside of the vane groove and the flow channel under the effect of centrifugal force. The gas stays at the root of the vane groove and flows out from the outlet at the outlet side , The root of the blade groove gas with the impeller back to the import, unable to complete the exhaust. Closed vortex pump to have self-absorption ability, the need to set up an outlet side of the adjuvant equipment, making the flow to the root of the blade groove to vent gas, and gas-liquid separation and liquid reflux structure. (2) closed vortex pump cavitation less effective. Imported flow from the outer edge of the impeller flow to the root of the blade groove, the flow velocity unevenly distributed, the impact of larger, so closed vortex pump cavitation function than open vortex pump. (3) Closed vortex pumps are usually single stage or two stages. (4) closed vortex pump power is usually 35% to 45%, higher than the open vortex pump. Open vortex pump 1, open vortex pump structure: Closed vortex pump with open flow channel is not the same, open vortex pump is usually used closed flow channel, suction inlet and outlet open at the root of the blade, and the flow channel Not the same. In addition to the closed flow channel structure, the open vortex pump also has a choice of centripetal open flow channel structure. Both constructions have self-priming abilities. The flow rate of the vortex pump can be as small as 0.05 l / s or less and as large as 12.5 l / s. Single-stage lift up to 300m, when the specific rotation of more than 40, because of its power is lower than the centrifugal pump, therefore, less use. Vortex pumps and other types of pumps have the following advantages: 1. Vortex pump is a very simple construction of high-lift pump, with the same standard, the same number of centrifugal pumps, the pump head 2-4 times higher. Compared with the same head pump volume, its scale is small, the structure is simple. Small and lightweight vortex pumps have great advantages in marine equipment. 2. With self-priming ability or by means of simple equipment to complete self-priming. 3. Has a steep drop in head characteristic curve, thus, insensitive to pressure fluctuations in the system. 4. Some vortex pumps to complete the vapor-liquid mixed transmission. This is of great importance for pumping volatile gases that are rich in gas and high temperature liquids that vaporize very high pressures. Vortex pump structure is simple, casting and processing technology are simple to complete, some of the vortex pump parts can also use non-metallic materials, such as plastic, nylon molded impeller. The use of vortex pump W-type single-stage direct-flow vortex pump is for the suction of water or physical and chemical properties similar to the use of water, the use of liquid temperature does not exceed 60, commonly used in boiler feed water, in shipbuilding, textile, chemical , Metallurgy, machinery manufacturing, aquaculture, fixed fire regulator, heat exchange units, remote irrigation and other agricultural departments have a wide range of applications. Small size and light weight of the vortex pump have great advantages in marine installations. Self-priming or self-priming with simple device. With a steep drop in head characteristic, it is insensitive to pressure fluctuations in the system. Some vortex pumps allow for liquid-vapor mixing. This is of great importance for the pumping of volatile liquids containing gases and high temperature liquids with high vapor pressure. Vortex pump structure is simple, casting and machining processes are easy to achieve, some of the vortex pump parts can also use non-metallic materials, such as plastic, nylon molded impeller. Guangzhou IFAT China Water Show article belongs to the building industry interconnect (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: gogoing (QQ / micro-channel: 181 817 456) starting: http : //beng.liuti.cn/ (Service Hotline: 400-6030-811)

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