An electric control valve with spool position self-feedback mechanism
A spool position, self-feedback technology
Active Publication Date: 2020-05-01
QINGDAO LOVOL EXCAVATOR
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] Aiming at the problem of low control precision of the spool position existing in the existing electric control valve, the present invention provides an electric control valve with a spool position self-feedback mechanism, which can accurately control the spool position
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:
[0022] combine image 3 , an electronically controlled valve with a valve core position self-feedback mechanism, comprising a main valve body 1, the inner lower part of the main valve body 1 is provided with a main valve core 2, and the lower part of the main valve core 2 is connected to the main valve body 1 through a main spring 3 The inner and lower ends of the spool are connected, and the main valve core 2 can slide up and down in the main valve body 1 .
[0023] The inner upper part of the main valve body 1 is provided with a cavity, an electromagnetic proportional reversing valve is arranged in the cavity, and the electromagnetic proportional reversing valve can slide up and down in the cavity.
[0024] The electromagnetic proportional reversing valve includes a reversing valve sleeve 4 , a reversing valve spo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an electronic control valve with a valve element position self-feedback mechanism. The electronic control valve comprises a main valve body. A main valve element is arranged onthe lower portion in the main valve body, and the lower portion of the main valve element is connected with the inner lower end of the main valve body through a main spring. A cavity is formed in theupper portion in the main valve body, an electromagnetic proportional directional valve is arranged in the cavity, and comprises a directional valve bush, and the directional valve bush sleeves a directional valve element. A top cover is arranged on the top of the main valve body, an electromagnetic coil is arranged on the top cover, and the top of the directional valve element is connected with the electromagnetic coil. The upper end of the main valve element is fixedly connected with the bottom end of the directional valve bush, and the main valve element can drive the directional valve bushto move. The main valve element and the directional valve bush of the electromagnetic proportional directional valve are fixedly connected together, the main valve element drives the directional valve bush to move while moving, self-feedback closed-loop control of the position of the main valve element is achieved, thus, precision control over the displacement of the main valve element can be achieved by controlling the magnitude of currents, and the control precision is greatly improved.
Description
technical field [0001] The invention relates to the field of electric control valves, in particular to an electric control valve with a valve core position self-feedback mechanism. Background technique [0002] The basis of the automation and intelligence of construction machinery is the electronic control of the hydraulic system, among which the electronic control of the hydraulic valve is the most critical. The electronic control of hydraulic valve refers to the use of electronic control signals to control the movement of the hydraulic valve spool. The size of the electronic control signal corresponds to the displacement of the valve core one-to-one, and the valve core is controlled to move to the specified position by adjusting the electronic control signal. How to achieve high-precision and high-response control of hydraulic valve spool is an urgent problem to be solved today. [0003] The most commonly used electronically controlled valve solutions such as figure 1 A...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F15B13/16
CPCF15B13/021F15B13/16
Inventor 李冰陈维雄蒙小行刘虹
Owner QINGDAO LOVOL EXCAVATOR