Portable gas-liquid pressure cylinder capable of prolonging service life of sealing element

Abstract

The invention provides a portable gas-liquid pressure cylinder capable of prolonging the service life of a sealing element. The portable gas-liquid pressure cylinder comprises a cylinder body. The cylinder body comprises an upper fixing barrel and a lower fixing barrel, an oil way channel is formed in the middle of a second sealing connecting piece, a pressure piston is arranged outside an oil waychannel in the lower end of the second sealing connecting piece in a sliding and sleeving manner and arranged in a sliding cavity, and a piston pressing rod is installed in the lower fixing barrel ina sliding manner. A second oil cavity is formed between the top end of the piston pressing rod and a first sealing connecting piece. Gas can be controlled to enter the pressure cylinder only by arranging one set of electromagnetic valves, oil pressure in oil cavities is transmitted to the piston pressing rod to do work on a workpiece, a sealing ring is arranged at the outer side of the pressure piston in a sleeving manner, and the front end of the pressure piston cannot extrude and damage the sealing ring; and when the pressure of the lower end of the piston pressing rod is up to a certain pressure, an on-off opening in the lower end of the inner side of the pressure piston makes contact with a valve element of an elastic sealing valve, oil way channels of a first oil cavity and the second oil cavity are closed, and a certain protection function is achieved.

Description

technical field [0001] The invention belongs to the technical field of gas-liquid increasing devices, and more specifically relates to a convenient gas-liquid boosting cylinder that can prolong the life of a seal. Background technique [0002] The pressurized cylinder is an improved design combining the advantages of the air cylinder and the oil cylinder. The hydraulic oil is strictly isolated from the compressed air. The piston rod in the cylinder will automatically start when it touches the work piece. Easy to adjust, under the same conditions can reach the high output of the hydraulic machine, low energy consumption, soft landing without damage to the mold, easy to install and the special booster cylinder can be installed at any angle of 360 degrees, takes up little space, has few failures and no temperature rise , long life, low noise, and other core features. [0003] Based on the above, the traditional booster cylinder needs two sets of solenoid valves, one set of sol...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a convenient gas-liquid pressurized cylinder that can extend the life of the seal to solve the need for two sets of solenoid valves, one set of solenoid valves controls gas, one set of solenoid valves controls hydraulic oil, and the piston rod In the downward pressing process, there is only one downward stroke under the action of the hydraulic oil, the pressure is not enough, and the sealing ring will be touched during the downward movement of the piston rod, which will lead to the damage of the sealing ring

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