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What are the advantages of the metering pump?

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What are the advantages of the metering pump?

Release time:2018-03-31 author:KeYu Machinery click:

What are the main advantages of metering pump? Let's explain to you Xiaobian of Huaian koyu Machinery Co., Ltd.

The metering pump is a kind of special volume pump which can meet the needs of various strict process flow, and the flow rate can be adjusted stepless in the range of 0-100% and used to transport liquid (especially corrosive liquid). The metering pump is also called a quantitative pump or a proportional pump. Through correction, the amount of every stroke is known. Therefore, the total dosage can be calculated by calculation. The total dosage is linear with the frequency (50% frequency =50%%). By external pulse or analog control, the dosage can be transferred from a minimum to a maximum within a second. In addition, it costs much less than the motor driven stroke length.

Metering pump

Characteristic:

1, the cast aluminum shell has high heat dissipation and light weight. It is suitable for all kinds of acid and alkali liquid, and is non-toxic and tasteless.

2, the cam mechanism is adopted. It has no leakage on the whole and can be placed in the medicine slot or pipe.

3, the contact medium pump head is PVC, optional PTFE and stainless steel material.

4, high cost performance, generally applicable to water treatment industry with low pressure demand.

5, when the pump is running or stopping, it can also adjust the flow rate or output quantitatively.

6, the diaphragm is composed of multi-layer composite structure, the first layer of super ductile Teflon acid resistant film, second layers of EPDM elastic rubber, third layer thickness supporting iron core, fourth layer of reinforced nylon fiber reinforcement, fifth use of EPDM elastic rubber completely package, can effectively improve the service life of the diaphragm.

1. How to set the pressure of the safety valve?

The pressure of the safety valve can be adjusted within the rated working pressure range of the metering pump, and it is not allowed to exceed the maximum working pressure of the metering pump. Safety valve is designed to prevent overpressure operation of metering pump. For example, if the maximum working pressure of the pump is 3bar, the pressure of the safety valve should be set to 3bar, or lower to ensure the normal work of the metering pump. Overpressure is one of the main reasons for the damage of metering pumps.

2, how to adjust the back pressure valve?

(1) never exceed the maximum working pressure of the metering pump.

(2) when the metering pump has pressure at the suction end, the pressure at the outlet side of the pump is at least 1bar higher than that at the suction side.

3, how to choose suitable volume of pulse dampers?

By measuring the capacity of each stroke of the metering pump (ML) by 26, we can get the minimum volume (ML) of the pulse damper needed to reduce the 90% pulsation.

4, when the outlet of the metering pump is at atmospheric pressure, what is the way to improve the repeated metering accuracy of the pump?

In the metering pump discharge valve installed valve springs can improve the accuracy of repeated metering, but the most effective way to improve is to install a back pressure valve at the end of the pipeline.

5. What is the maximum positive pressure allowed by ProMinent metering pump?

When the positive pressure is less than 1bar of the pump discharge pressure, the Alpha metering pump can work normally. If the pressure exceeds the allowable pressure, the metering pump can not work normally.


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