Multifunctional overflow valve for teaching and practical training and operation method

A multi-functional, relief valve technology, applied in the field of hydraulic valves, to achieve the effect of high use value, compact structure and ingenious design

Active Publication Date: 2016-07-27
SHANDONG DOLANG TECH EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rapid development of modern hydraulic transmission towards diversification, especially the development of construction machinery hydraulic pressure puts forward more requirements for hydraulic valves used in teaching and training, and the single-function and single-principle hydraulic valve components in teaching equipment are increasingly unable to meet these requirements. kind of request

Method used

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  • Multifunctional overflow valve for teaching and practical training and operation method
  • Multifunctional overflow valve for teaching and practical training and operation method
  • Multifunctional overflow valve for teaching and practical training and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a multifunctional overflow valve for teaching and training includes a valve body 1 with a valve cavity, a valve sleeve 3 installed in the valve cavity, a valve core 4 slidingly arranged in the valve sleeve 3, and a valve sleeve 3 The valve cavity is divided into left cavity 6, middle cavity 13 and right cavity 14 with the spool 4. The valve body 1 is provided with a high-pressure oil inlet 2, a zero-pressure oil return port 7, a control oil port 10, and a high-pressure oil inlet 2. , zero-pressure oil return port 7 and control oil port 10 communicate with the left cavity 6, the middle cavity 13, and the right cavity 14 respectively through oil channels; one end of the spool 4 is provided with a spring guide seat 9, the spool 4 and the spring guide seat There are two springs 5 ​​with different rigidities between the 9, and the two ends of the spring 5 are respectively pressed on the valve core 4 and the spring guide seat 9; the other end of the...

Embodiment 2

[0027] This embodiment discloses an operation method of a multifunctional overflow valve for teaching and training. At this time, the overflow valve is used as a traditional overflow valve, such as image 3 As shown, the high-pressure oil inlet 2 is connected to the pressure oil outlet, and the zero-pressure oil return port 7 and the control oil port 10 are connected to the oil tank. The pressure oil enters the valve body 1 from the high-pressure oil inlet 2 and acts on the valve core 4. When the pressure When it is greater than the set value of the spring force, the spool 4 slides to the right, and the pressure oil is discharged into the oil return tank from the zero pressure oil return port 7, and the system pressure is changed by adjusting the adjusting screw 12. At this time, the multifunctional overflow valve for teaching and training is used as a traditional overflow valve, but a larger system pressure can be obtained by adjusting the adjusting screw 12, which can be used...

Embodiment 3

[0030] This embodiment discloses another operation method of the multifunctional overflow valve for teaching and training. At this time, the overflow valve is used as a differential overflow valve, such as Figure 4 As shown, the high-pressure oil inlet 2 is connected to the pressure oil outlet, the zero-pressure oil return port 7 is connected to the mailbox, and the control oil port 10 is connected to the highest load pressure detection port of the system. The pressure oil enters the valve body from the high-pressure oil inlet 2 and acts on the valve body. At the left end of spool 4, the highest load pressure of the system and the spring force act on the right section of spool 4 together. After stabilization, a force balance is established on spool 4, namely F 左 =F 右 +F 弹 , F 左 The force generated by the system supply pressure at the left end of the spool 4, F 右 is the force generated at the right end of spool 4 by the highest load pressure of the system, F 弹 It is the fo...

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Abstract

The invention discloses a multifunctional overflow valve for teaching and practical training. The multifunctional overflow valve is designed and developed for meeting the teaching and practical training requirement of vocational education and can meet the requirements of principle verification type practical training and actual simulation type practical training for students. The multifunctional overflow valve comprises a valve body, a valve sleeve installed inside the valve body, a valve core with an oval groove, springs different in rigidity and a control cover plate. Through the valve core with the oval groove, the pressure impact at the opening moment of the overflow valve can be effectively lowered, and the influence of the medium temperature on the performance of the overflow valve can be lowered; through the springs different in rigidity, the requirements of principle verification type practical training and actual simulation type practical training both can be met; through different connection modes of a control oil port, the control principle of the multifunctional overflow valve is changed, and the functions of fixed-value overflow and fixed-difference overflow are realized. The multifunctional overflow valve for teaching and practical training is ingenious in design, compact in structure, capable of realizing multiple functions and capable of being applied to various conditions of teaching and practical training, effectively opens minds of the students, and enhances understanding of the students about hydraulic pressure knowledge.

Description

technical field [0001] The invention relates to a hydraulic valve, in particular to a multifunctional overflow valve for teaching and training, which belongs to the technical field of hydraulic valves. Background technique [0002] Hydraulic training teaching equipment is designed and developed to meet the teaching and training requirements of mechanical engineering and mechatronics majors in colleges, technical schools, and vocational schools. Through operation experiments and course design, students can accurately grasp the structure of hydraulic components, control principles and design methods of hydraulic systems. However, the rapid development of modern hydraulic transmission towards diversification, especially the development of construction machinery hydraulic pressure puts forward more requirements for hydraulic valves used in teaching and training, and the single-function and single-principle hydraulic valve components in teaching equipment are increasingly unable ...

Claims

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Application Information

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IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 杜德昌刘寒姚建岭魏利赵京伟张振东赵贵森
Owner SHANDONG DOLANG TECH EQUIP
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