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Impeller type gas flow metering device

A technology of gas flow and metering devices, which is applied in the direction of measuring devices, volume metering, liquid/fluid solid measurement, etc. It can solve the problems that the impeller cannot rotate, the service life of the metering device is reduced, and the parts such as impeller bearings are easy to wear, etc., to achieve reduction Small air flow rate, protection of internal components, and the effect of ensuring filtration efficiency

Pending Publication Date: 2017-01-11
超达阀门集团丽水有限公司
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AI Technical Summary

Problems solved by technology

[0002] The traditional impeller-type gas flow metering device drives the rotation of the impeller through the flow of gas. The gas flow is linearly related to the speed of the impeller. The larger the flow rate, the faster the speed of the impeller. The rotation of the impeller is accumulated by driving the mechanical counting device. The flow rate of gas, the traditional impeller flow metering device has a simple structure, but there are some defects: First, at low flow rate, due to the low flow rate of gas, the impeller cannot rotate, so it cannot accurately measure small flow rate
The second is that the speed of the impeller is too fast under the large flow rate, and the parts such as the impeller bearing are easy to wear, resulting in a short service life of the flow metering device. The ratio to the minimum flow rate is generally about 10. When the required measurement range is large, the measurement accuracy of the metering device will be greatly reduced, and the service life of the metering device will also be greatly reduced.
This patented technology is designed and developed to solve the defects existing in the traditional impeller-type gas flow metering device; data error

Method used

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Embodiment Construction

[0014] Such as figure 1 — figure 2 As shown, the present invention discloses an impeller-type gas flow metering device, comprising a main housing 1, the main housing 1 is provided with an impeller mechanism, an upper air chamber 2, a lower air chamber 3, an air intake channel 4, a valve mechanism, an air outlet Channel 5 and detection mechanism, the main casing 1 is provided with an upper air chamber 2 and a lower air chamber 3 in sequence along the vertical direction, the impeller mechanism includes a coaxially rotating impeller shaft 6 and an impeller 6, and the impeller 6 is located on the upper air chamber 2 and the lower air chamber Between the air chambers 3, the impeller shaft 61 is rotatably arranged on the main housing 1, and one end of the impeller shaft 61 extends outside the main housing 1 as a detection end 611 that cooperates with the detection mechanism. The air intake channel 4 connects the upper air chamber 2 with the outside world. The outlet channel 5 comm...

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Abstract

The invention relates to an impeller type gas flow metering device which comprises a main shell provided with an impeller mechanism, an upper air chamber, a lower air chamber, an air inlet channel, a valve mechanism, an air outlet channel and a detection mechanism. The valve mechanism comprises a valve seat and a valve rotatably arranged on the valve seat, the valve is positioned between the air inlet channel and the upper air chamber and provided with an adjusting component for adjusting opening of the valve according to flow, and the air inlet channel is provided with a filtering mechanism for filtering external gas. By the scheme, the impeller type gas flow metering device is used for intelligently adjusting the size of the valve and capable of purifying gas flow.

Description

technical field [0001] The invention relates to a flow metering device, in particular to an impeller type gas flow metering device. Background technique [0002] The traditional impeller-type gas flow metering device drives the rotation of the impeller through the flow of gas. The gas flow is linearly related to the speed of the impeller. The larger the flow rate, the faster the speed of the impeller. The rotation of the impeller is accumulated by driving the mechanical counting device. For the flow of gas, the traditional impeller flow metering device has a simple structure, but there are some defects: First, the impeller cannot rotate due to the low flow rate of the gas at low flow rate, so it cannot accurately measure small flow rates. The second is that the speed of the impeller is too fast under the large flow rate, and the parts such as the impeller bearing are easy to wear, resulting in a short service life of the flow metering device. The ratio to the minimum flow r...

Claims

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Application Information

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IPC IPC(8): G01F1/28G01F15/00G01F15/12
CPCG01F1/28G01F15/00G01F15/125
Inventor 邱晓来潘统国王汉洲黄明金张宗辉
Owner 超达阀门集团丽水有限公司
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