Proportional valve and its seat

A technology of proportional valve and electromagnetic proportional valve, which is applied in the direction of valve lift, valve details, valve device, etc., can solve problems such as flow fluctuations, and achieve the effect of avoiding sudden changes in flow

Active Publication Date: 2019-11-08
HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, the triangular opening structure does improve the flow control accuracy of the proportional valve to a certain extent, but due to the solenoid valve structure, the movement of the valve core is simultaneously affected by the force of the electromagnetic drive part and the return spring, while the force of the spring The relationship between the change

Method used

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  • Proportional valve and its seat
  • Proportional valve and its seat
  • Proportional valve and its seat

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Embodiment Construction

[0024] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0025] The specific embodiment 1 of the proportional valve of the present invention, such as Figure 1-2 As shown, the structure of the electromagnetic proportional valve is as follows figure 1 , 2 As shown, the main components of the electromagnetic proportional valve include a valve body 11, a valve seat 12, a valve core 13, an output joint 14, a valve cover 15, an electromagnetic drive assembly, a valve stem 16, and the like.

[0026] The valve seat 12 is installed in the valve body 11. In this embodiment, the electromagnetic proportional valve is a spool valve type structure, so the valve port 17 is arranged in the circumferential direction of the valve seat 12, and the valve can be adjusted through the reciprocating motion of the valve core 13. The opening of the port 17 is adjusted to achieve the purpose of adjusting the flow. The output joint...

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Abstract

The invention relates to the field of valves, in particular to a proportional valve and a valve seat thereof. The proportional valve comprises a valve body, a valve core and the valve seat, wherein the valve core is in sliding fit with the valve seat; a valve port is formed in the valve seat, and the valve core can open and close the valve port and adjust the opening degree of the valve port through reciprocating movement; and when the valve port works, the firstly opened end of the valve port is defined as a primary open end, the valve port is provided with a gradually-changed section, the gradually-changed section is gradually enlarged from the primary open end of the valve port to the other end of the valve port, and the inner wall surface of at least one side of the gradually-changed section is an arc surface extending from the primary open end of the valve port to the outer side. According to the proportional valve, sudden change of the change speed of the opening degree of the valve port is prevented in any situation so that flow control precision of the proportional valve can be improved.

Description

technical field [0001] The invention relates to the field of valves, in particular to a proportional valve and its valve seat. Background technique [0002] Proportional valve is a valve that can continuously control the flow of the corresponding medium. It is widely used in various fields such as gas appliances, vehicles, and medical equipment. For example, in gas appliances, the proportional valve is the core control component. Through the pressure regulation and voltage stabilization functions of the gas proportional valve, the output pressure can be stabilized when the gas inlet pressure fluctuates. At the same time, the gas proportional valve also has the function of opening and closing the gas pipeline. When the gas appliance is closed, it can disconnect the gas channel, prevent the flow and leakage of the gas, and protect the personal safety of the user. [0003] A typical proportional valve includes a valve body, a valve core, a spring and an electromagnetic drive a...

Claims

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Application Information

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IPC IPC(8): F16K27/02F16K1/42
CPCF16K1/42F16K27/02
Inventor 荆兵胡丽敏董小琼冯楠杨亚青刘刚段学忠张启明魏华生李志鹏
Owner HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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