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Metal Injection Molding Automotive Sensor Pump Valve Titanium Alloy MIM Parts
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Car sensor pump valve function
The valve cover is installed on the pump cover through screws, and the pump cover is installed on the pump body through screws; an outlet valve and an inlet valve are bonded between the valve cover and the pump cover, and the outlet valve and the inlet valve are both made of The annular piezoelectric film is bonded to a substrate, and the substrate has through holes; a pump cavity diaphragm is crimped between the pump cover and the pump body, and is installed on both sides of the pump cavity diaphragm through screws. There is a piston and a top block; the piston and the sealing ring, pump cover, outlet valve and inlet valve installed on the piston together constitute the pump chamber; the bolts installed at the end of the pump body connect the piezoelectric stack driver through the anti-twist stop Crimped on the top block; the piezoelectric stack driver, outlet valve and inlet valve are connected to the electronic control unit through wire set one, wire set two and wire set three respectively.
When the electronic control unit is turned on and enters steady-state operation, and the driving voltage increases from 0 to V0, the piezoelectric stack driver begins to extend and push the top block, pump chamber diaphragm and piston to move to the right, causing the pump chamber to The volume decreases and the fluid pressure increases. The increasing fluid pressure forces the outlet valve to open and the inlet valve to close. The fluid is discharged from the pump chamber through the outlet valve. This is the discharge process; when the output voltage of the electronic control unit is reversed, the voltage When V0 decreases from V0 to 0, the piezoelectric stack driver begins to shrink under the action of the pump chamber diaphragm, causing the volume of the pump chamber to increase and the fluid pressure in the chamber to decrease. The continuously decreasing fluid pressure forces the inlet valve to open and the outlet valve to close, and the fluid It enters the pump chamber through the inlet valve, which is the suction process.
Qinhuangdao Zhongwei Precision Mechanical Parts Co., Ltd. was established in 1997 and is a metal powder injection molding (MIM) product manufacturer and solution provider. We provide customers with large quantities of various metal material structural parts, functional parts and appearance parts with high precision, complex shapes, good performance and exquisite appearance. We also have the development capabilities of ceramics and titanium alloys to meet the needs of different types of customers. The company takes "intelligent manufacturing and excellence" as its development goals.
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