New Dawtz EFD micro mechanical diaphragm metering pump laboratory available

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• working principle

• The motor drives the worm gear pair to perform variable speed motion through direct transmission, and under the action of the crank connecting rod mechanism, converts the rotational motion into reciprocating linear motion.

• The sliding rod is directly connected to the diaphragm, and when the sliding rod moves back and forth, it directly pushes (pulls) the diaphragm back and forth. When the diaphragm is pulled back, a vacuum is formed inside the pump head, the inlet ball valve opens, and the liquid is sucked up; When the diaphragm is pushed forward, the inlet ball valve closes and the outlet ball valve opens, and the liquid is expelled. The suction and discharge are achieved through the opening and closing action of the one-way valve on the pump head, achieving the function of conveying liquid.

• structural characteristics

• drive mechanismDriven by a motor, the power output is stable and can provide reliable power support for the reciprocating motion of the diaphragm, ensuring the normal operation of the metering pump.

• diaphragm assemblyDiaphragm is a key component of metering pumps, usually made of high-performance elastic materials, with good flexibility and corrosion resistance, able to withstand certain pressure and deformation, ensuring precise fluid delivery during reciprocating motion, while effectively isolating the conveyed fluid from the driving mechanism.

• pump head componentIncluding suction valve group, discharge valve group, etc., the design and manufacturing accuracy of the valve group directly affects the flow accuracy and stability of the metering pump. Precision machined ball valves or check valves are usually used to ensure rapid opening and closing of the valve during the suction and discharge process, reducing fluid leakage and backflow.

• Flow regulation mechanismBy rotating the adjustment handwheel and driving the adjustment screw to rotate, the spacing between the tappets can be changed, thereby changing the movement stroke of the diaphragm in the pump chamber to determine the flow rate. The scale of the adjustment handwheel can accurately control the diaphragm stroke with high accuracy.

• Application Areas

• water treatment industryAccurate metering and dosing of chemical agents used in wastewater treatment, such as coagulants, disinfectants, pH regulators, etc., to ensure the stability and reliability of wastewater treatment effectiveness; In the process of pure water production, it can also be used for adding scale inhibitors, reducing agents, and other chemicals in reverse osmosis systems.

• chemical industryIn fine chemical production, it is used for precise measurement and mixing of various raw materials and additives to ensure the stability of product quality; It can also be used in process steps such as catalyst addition and acid-base neutralization in chemical engineering.

• pharmaceutical industryIn the process of drug production, it is used for precise delivery and measurement of various drugs and reagents, meeting the high precision and hygiene requirements of drug production, ensuring the consistency and safety of drug quality.

• Food and beverage industryCan be used for precise addition of food additives, such as sweeteners, preservatives, pigments, etc., to ensure stable taste and quality of food; In the production of beverages, it can also be used for the metrological addition of essence, spices, etc.

EFD Manual Control Series

EFD-01-07 flow rate 1L/h, pressure 7kg

EFD-03-07 flow rate 3L/h, pressure 7kg

EFD-06-05 flow rate 6L/h, pressure 5kg

EFD-09-03 flow rate 9L/h, pressure 3kg