Title:
HYDRAULIC SYSTEM MICRO-ADJUSTMENT DEVICE, AND TANK CALIBRATION SYSTEM COMPRISING THE SAME
Document Type and Number:
WIPO Patent Application WO/2023/125555
Kind Code:
A1
Abstract:
The present invention provides a hydraulic system micro-adjustment device and a tank calibration system comprising same. The hydraulic system micro-adjustment device comprises a base, a piston, a valve body, a valve core and a handle, characterized in that the valve body is internally provided with an inner cavity for receiving the valve core from an upper portion of the valve body, wherein the valve core is in threaded connection with the inner cavity; the piston is inserted into the inner cavity from a lower portion of the valve body, the piston abuts against the valve core, the lower portion of the valve body is mounted in the base and is in communication with oil passages in the base, and the handle is connected to a top of the valve core; and the valve core is movable along the inner cavity upon rotation of the handle thereby pushing the piston to move along the inner cavity, so as to change the volume of a cavity formed by the base, the valve body, and the piston. According to the present invention, the adjustment of pressure in a local range can be achieved, thereby reducing the number of times of pressurization to improve the calibration efficiency. The target pressure value can be reached quickly and stably, thereby reducing uncertainty and improving the calibration accuracy.
Inventors:
WANG BINGZHENG (CN)
LI CHUNHUI (CN)
DING CHENGGANG (CN)
LI CHUNHUI (CN)
DING CHENGGANG (CN)
Application Number:
PCT/CN2022/142425
Publication Date:
July 06, 2023
Filing Date:
December 27, 2022
Export Citation:
Assignee:
METTLER TOLEDO CHANGZHOU PREC INSTRUMENTS LTD (CN)
METTLER TOLEDO CHANGZHOU MEASUREMENT TECHNOLOGY LTD (CN)
METTLER TOLEDO INT TRADING SHANGHAI CO LTD (CN)
METTLER TOLEDO CHANGZHOU MEASUREMENT TECHNOLOGY LTD (CN)
METTLER TOLEDO INT TRADING SHANGHAI CO LTD (CN)
International Classes:
F16K31/60
Foreign References:
| US5439197A | 1995-08-08 | |||
| US20120132840A1 | 2012-05-31 | |||
| CN208672132U | 2019-03-29 | |||
| CN208672132U | 2019-03-29 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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