What is the main material of the diaphragm pump?

The diaphragm pump is actually an embolization pump, which separates the liquid to be transported from the live column and the pump cylinder by means of a membrane, thereby protecting the live column and the pump cylinder. The parts on the left side of the diaphragm that are in contact with the liquid are made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances; the right side of the diaphragm is filled with water or oil.

This article contains the following:

• the main material of the diaphragm pump

• Combination

• Flow characteristics

• Applications

1.the main material of the diaphragm pump

Diaphragm pumps, also known as control pumps, are the main types of actuators. By receiving the control signal output from the adjustment control unit, the fluid flow is changed by means of power operation. The role of the diaphragm pump in the control process is to accept the control signal of the regulator or the computer, change the flow rate of the adjusted medium, and maintain the adjusted parameters within the required range, so as to achieve the automation of the production process. If the automatic adjustment system is compared with the manual adjustment process, the detection unit is the human eye and the adjustment control unit is the human brain, then the execution unit-the diaphragm pump is the human hand and foot. In order to realize the adjustment and control of a certain parameter of the process, such as temperature, pressure, flow, liquid level, etc., it is inseparable from the diaphragm pump.

There are five commonly used materials for pneumatic diaphragm pumps: plastic, aluminum alloy, cast iron, stainless steel, and Teflon. There are four types of electric diaphragm pumps: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm diaphragms are equipped with nitrile rubber, neoprene rubber, fluororubber, polytetrafluoroethylene, polytetrafluoroethylene, etc. on various special occasions according to different liquid media, and are used to pump various media to meet the needs.

2.Combination

There are 4 types of combination, namely positive and positive (air-closed type), positive and negative (air-open type), anyway (air-open type), reverse-reverse (air-closed type)

Considerations: a) process safety; b) the characteristics of the medium; c) ensure product quality and minimize economic losses.

3.Flow characteristics

The flow characteristic of the diaphragm pump refers to the relationship between the relative flow rate and displacement (relative opening of the valve) of the medium flowing through the valve. Commonly used ideal flow characteristics are only straight line, equal percentage (logarithmic), and quick opening.

Specifically consider from the following aspects:

①Analyze and select from the adjustment quality of the adjustment system;

②Considering the process piping;

③Analysis from load change.

4.Applications

Since the birth of the diaphragm pump, it is gradually invading the market of other pumps and occupying an important part of it. For example, the diaphragm pump in the paint and ceramics industry has occupied an absolute dominant position.

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