A piezoelectric ceramic jet tube valve group
A piezoelectric ceramic, jet tube valve technology, applied in valve details, valve devices, servo motor components, etc., can solve the problems of unstable flow characteristics of the main valve, unstable valve core displacement, and vibration of the main valve valve core. Inexpensive, fast response, reducing the effect of jet force
Active Publication Date: 2020-07-28
JIANGSU UNIV OF TECH
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Problems solved by technology
[0006] The present invention solves the problem that the existing jet tube valves on the market have poor control accuracy and are not easy to use, and the jet tube is subject to jet force, which is prone to high-frequency interference vibration, resulting in vibration of the main valve spool and unstable displacement of the spool , resulting in problems such as unstable main valve flow characteristics, poor linearity, and large hysteresis
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[0016] What needs to be explained here is that the location words left, right, up, down, etc. are based on figure 1 The views shown are defined by reference, and it should be understood that the use of said localizers should not limit the scope of protection claimed in this application.
[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] Such as Figure 1 to Figure 2 As shown, a piezoelectric ceramic jet tube valve group includes a main valve 6, a pilot valve body 7 and a piezoelectric ceramic pilot valve 10, and the main valve 6 and the piezoelectric ceramic pilot valve 10 are arranged in a full Inside the pilot valve body 7 of hydraulic oil;
[0019] The piezoelectric ceramic pilot valve 10 includes a piezoelectric ceramic deformation assembly 1, a connector 2, a lever 3, a connecting rod 4 and a jet pipe valve 5; the lever 3 is arranged laterally in the pilot valve body 7 and the right end ...
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The invention discloses a piezoelectric ceramic jet pipe valve group, which belongs to the technical field of jet pipe valves. It includes a main valve, a pilot valve body and a piezoelectric ceramic pilot valve, and the main valve and the piezoelectric ceramic pilot valve are both arranged in the pilot valve body filled with hydraulic oil. In the present invention, the main valve and the piezoelectric ceramic pilot valve are arranged in the pilot valve body filled with hydraulic oil, the jet pipe valve is immersed in the oil, and the jet flow is submerged jet flow to avoid air entry, and at the same time, the damping of the jet pipe valve itself can be increased Function, reduce the jet force on the jet pipe valve, reduce high-frequency interference vibration, and avoid vibration of the main valve spool. By setting the piezoelectric ceramic stack to generate deformation when energized, the hydraulic pressure difference between the left and right pilot oil chambers of the main valve is adjusted. The piezoelectric ceramic has high sensitivity, quick response, small output displacement, and an approximate linear relationship between displacement and voltage, which is better. Improve the characteristics of the jet pipe valve to achieve a stable and efficient control process, and realize high-precision hydraulic servo control.
Description
technical field [0001] The invention belongs to the technical field of jet pipe valves, in particular to a piezoelectric ceramic jet pipe valve group. Background technique [0002] Piezoelectric crystal materials mainly exhibit the piezoelectric effect, which mainly reflects the coupling relationship between the elastic properties of the crystal and the dielectric properties. When the piezoelectric crystal is deformed under the action of an external force, the phenomenon of electric polarization in the crystal is called the positive piezoelectric effect. , when the piezoelectric crystal is placed in an electric field, the crystal will deform, and the deformation is proportional to the electric field strength. This phenomenon is called the inverse piezoelectric effect. Piezoelectric ceramics are widely used piezoelectric crystal materials. Ceramic is an information functional ceramic material that can convert mechanical energy and electrical energy into each other. Piezoelect...
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IPC IPC(8): F15B13/02F16K31/00F16K31/40
CPCF15B13/021F16K31/004F16K31/40
Inventor 李兴成殷正瑞刘凯磊周宇程伟
Owner JIANGSU UNIV OF TECH