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High-precision flow valve based on air detection

An air detection, high precision technology

Pending Publication Date: 2020-12-18
合肥福瞳光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The eccentric wheel is used to realize the flow adjustment. It is difficult to control and grasp the diameter of the eccentric wheel, and it is difficult to obtain the processing parameters and

Method used

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  • High-precision flow valve based on air detection
  • High-precision flow valve based on air detection
  • High-precision flow valve based on air detection

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Effect test

Embodiment 2

[0031] In the technical scheme of embodiment two, at the smaller end of the Archimedes spiral line segment-201 diameter ( Figure 6 When point d in the middle) is located outside the air outlet 6, the flow rate is maximum. The variation range of the spool in this solution is a gradual and continuous linear variation between the maximum value and the peak value.

[0032]The Archimedes spiral of technical scheme of the present invention is prior art, and it is to assume a point (as Figure 8 point 102) in a straight line (such as Figure 8 move outward at a constant speed on the middle line 100), and at the same time, the point 102 rotates around the inner endpoint of the line 100, and finally rotates to the position of point 101, forming the Figure 8 In the Archimedes spiral segment 200, the movement angle of the Archimedes spiral segment 200 here is less than 360 degrees, which is suitable for the design of the spool in the technical solution.

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Abstract

The invention discloses a high-precision flow valve based on air detection. The high-precision flow valve comprises a valve body, wherein the valve body comprises a valve cavity and a valve element arranged in the valve cavity, an air inlet and at least one air outlet are formed in the valve cavity, the valve element adjusts the air outlet flows of the air outlets, the cross section of the valve element is a cylinder with the Archimedes spiral outline, the Archimedes spiral outline comprises a first Archimedes spiral section, one end of the first Archimedes spiral section is connected with anarc, the angle of the first Archimedes spiral section is smaller than 360 degrees, the air outlets are completely closed through the side face, at the arc position, of the valve element, and the flowsof the air outlets are adjusted by the side surface of the valve element at the first Archimedes spiral section. According to the high-precision flow valve based on air detection, the outer contour of the valve element changes linearly, the change rule is adjustable and convenient to control and grasp, and therefore the adjusting precision is high when the valve element adjusts the flow.

Description

technical field [0001] The invention belongs to the field of flow valves, and more specifically relates to a high-precision flow valve based on air detection. Background technique [0002] The flow valve is an essential component in the monitoring and detection instruments of the concentration of particulate matter in the ambient air. In the prior art, the structure of the flow valve mostly uses an eccentric wheel as the spool to adjust the flow rate, adjust the distance between the outer wall of the eccentric wheel and the inlet and outlet, that is, adjust the passage area of ​​the medium at the inlet and outlet positions to realize the flow rate adjustment. The eccentric wheel is used to realize the flow adjustment. It is difficult to control and grasp the diameter of the eccentric wheel, and it is difficult to obtain the processing parameters and processing accuracy during processing. When the eccentric wheel valve core is prepared, the flow value cannot change linearly w...

Claims

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Application Information

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IPC IPC(8): F16K5/04F16K5/08F16K5/12F16K11/085
CPCF16K5/0407F16K5/08F16K5/12F16K11/0856
Inventor 杜亚举李保生汪宵张斌胡建洲郭志勇
Owner 合肥福瞳光电科技有限公司
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