Multifunctional vacuum cupping
A multi-functional and vacuum technology, applied in glass suction cups, medicine equipment, magnetic therapy, etc., can solve the problems of easily damaged handwheels and pistons, inconvenient operation, and unsustainable cupping, achieving not easy to break and accurate guidance. , the effect of prolonging the service life
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[0023] like figure 1 The multifunctional vacuum cupping shown includes a tank body 3 and a vacuum pumping device, the tank body 3 is a hollow cylinder, and the vacuum pumping device includes a handwheel 1, a lifting nut 2 matched with the handwheel, a piston rod 4, and a piston 5. The lifting nut 2 is axially limited and rotatably positioned on the tank body 3 , the piston rod 4 and the piston 5 are integrally arranged, and the piston rod 4 has an external thread matched with the internal thread 23 of the lifting nut. Two sealing rings 51 are arranged on the piston 5, and the material of the sealing rings is silicon rubber. The handwheel 1 and the lifting nut 2 are tightly fitted and connected by a key 11 . In addition, a groove can also be processed on the handwheel 1, and correspondingly the lifting nut can be processed with a protrusion matching the above groove; and vice versa. This ensures that there is no relative rotation between the hand wheel 1 and the lifting nut ...
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