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Three plunger high pressure metering pump how to choose
Edit:Lianyungang Mi Lu Luo Pump Industry Co., Ltd   UpDate:2016-06-05

Three plunger high-pressure metering pump is a metering pump, then it is how to choose it, today Xiaobian on the three plunger high pressure metering pump selection for a brief introduction.

Three plunger high pressure metering pump is a kind of special capacity pump which can meet the needs of various strict process flow, the flow can be steplessly adjusted in the range of 0-100%. Metering pumps are also known as metering pumps or proportional pumps. Metering pumps are reciprocating volumetric pumps for accurate metering and are usually required for metering pumps with no more than ± 1% accuracy.

Three plunger high-pressure metering pump works: the motor by the coupling drive worm and deceleration through the worm gear to make the spindle and eccentric wheel for the rotary motion, driven by the eccentric wheel bow-type slide sliding seat for reciprocating motion. When the plunger is moved backwards, the suction valve is closed and the discharge valve opens, and the liquid is in the plunger to further Movement when discharged.

To determine the three plunger high pressure metering pump pressure: the selected metering pump rated pressure slightly higher than the actual maximum pressure required, generally higher than 10 to 20%. Do not choose too high, too high pressure will waste energy, increase equipment investment and operating costs.

To determine the three plunger high pressure metering pump flow: the selected metering pump flow should be equal to or slightly greater than the required flow of the process. The use of metering pump flow in the metering pump rated flow range of 30 to 100% better, then the metering pump repeat the high accuracy of reproduction. Taking into account the economic and practical, it is recommended to measure the actual flow of the pump to choose the metering pump rated flow of 70 ~ 90%.

To determine the three plunger high-pressure metering pump pump head material: metering pump specific model specifications to determine, and then according to the properties of over-current media selection over-current part of the material, this step is very important, if improper selection, will cause damage to the media corrosion Flow components or media leaks and other pollution systems. Serious may also cause a major accident.

Other aspects: in the choice of three plunger high pressure metering pump, but also need to consider the required metering pump accuracy level, the higher the level of precision, the greater the input. Metering pump general operating temperature of -30 ~ 100 ℃, special metering pump its operating temperature range is wider (such as with high temperature temperature jacket jacket, the delivery temperature of up to 500 ℃).

Early, customers in the use of three plunger high pressure metering pump products often require only to manually adjust the flow of the function. With the increase in production automation, more and more users tend to use metering pumps with external control functions, such as pulse signals, 4 to 20 mA current signals or fieldbus technology, etc. to adjust the stroke length of the metering pump Or frequency.


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