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Vertical Woltmann water meter

A technology of screw wings and water meters, applied in the field of vertical screw wing water meters, can solve the problems of low metering accuracy of water meters, only reach B level, consumption of materials, etc., achieve excellent market prospects, reduce overall weight and volume, use long life effect

Inactive Publication Date: 2012-01-18
TIANJIN JINMIAO WATER METER MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the vertical screw-type water meters are all large-caliber water meters with a nominal diameter of 50mm or more. The water meters with a nominal diameter of 40mm on the market are all rotor-type water meters. This kind of water meter is not only heavy and consumes materials, but also affected by the structure. The accuracy is low, and the accuracy level of water meters can only reach level B. There is no water meter with a nominal diameter of 40mm and a vertical screw wing of level C accuracy on the market.

Method used

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  • Vertical Woltmann water meter
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  • Vertical Woltmann water meter

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Embodiment Construction

[0014] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0015] see figure 1 , a vertical screw-wing water meter with a nominal diameter of 40mm. It includes a watch case 1, a speed reduction mechanism 2, an indicator 3, a water filter 4, an impeller 5 and a guide 6. The above watch case 1 is the shelter of the water meter, and is also the parent body of the water meter. Other parts of the water meter are installed in the watch case 1, and the watch case 1 protects the operation of the various parts of the water meter. The outlet 1-2, the inlet 1-1 and the outlet 1-2 are connected to the pipeline through a pipe joint or a flange, the diameter of the inlet 1-1 and the outlet 1-2 is the nominal diameter of the water meter, and the nominal diameter of the water meter of the present invention is The ...

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Abstract

The invention relates to a vertical Woltmann water meter, which comprises a meter case, a retarding mechanism, an indicator, a water strainer, an impeller and a guide part, wherein the retarding mechanism is arranged in the meter case. The vertical Woltmann water meter is characterized in that the impeller is provided with rotary blades of which the helical angles are 45 degrees; the guide part is provided with guide blades; each guide blade has a 45-degree helical angle; and the included angle between each rotary blade and each guide blade is 90 degrees. The vertical Woltmann water meter hasa simple structure, a small size, a light weight, manufacturing material saving and long service life. Moreover, the metering accuracy and the sensitivity are high, and the technical blank of 40 typevertical Woltmann water meters with C-level precision in water meter markets is filled.

Description

technical field [0001] The invention belongs to the technical field of water meters, in particular to a vertical screw-wing water meter with a nominal diameter of 40mm. Background technique [0002] The water meter is one of the measuring instruments with the largest usage, the widest range and the most complete varieties and specifications in the field of flow measurement. my country is the world's largest producer of water meters. Not only has my country's total production of water meters accounted for one-third of the world's total, but its export volume has also been increasing in recent years. The vertical screw-wing water meter is a kind of screw-wing water meter, which belongs to the speed-type water meter. When the water flows into the water meter, it impacts the water meter along the axial direction. The screw-shaped impeller rotates and then flows out. The impeller of the vertical screw-wing water meter is vertically supported by the thimble. Therefore, the wear r...

Claims

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Application Information

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IPC IPC(8): G01F1/10
Inventor 丁明雷
Owner TIANJIN JINMIAO WATER METER MFG
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