Threaded connecting structure of differential piston
A technology of differential piston and connection structure, applied in multi-stage pumps, variable capacity pump components, liquid variable capacity machinery, etc., can solve problems such as piston falling off, gas pressure pulsation, equipment stop
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[0016] Attached below figure 1 and figure 2 Specific embodiments of the present invention are further explained:
[0017] Preferably, the present invention is a threaded differential piston connection method, including a piston 1, a piston rod 2, a lock nut 3, a steel pad 4, an outer hexagonal wrench 5 and an inner hexagonal wrench 6, and it is characterized in that on the piston rod 2 The part connected with the piston 1 is provided with threads, and the lock nut 3 is provided with internal threads.
[0018] In the present invention, the design of the thread on the piston rod 2 matches the design of the internal thread on the lock nut 3, and the diameters of the two threads are equal.
[0019] In the present invention, several steel pads 4 are arranged between the piston 1 and the shaft shoulder, and between the piston 1 and the lock nut 3 .
[0020] When the piston 1 is made of steel, the steel pad 4 can be omitted between the piston 1 and the shaft shoulder, and between...
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