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Production method of steel blade of counter rotating axial main fan

A production method and a fan technology, which are applied to the components of the pumping device for elastic fluid, mechanical equipment, non-variable-capacity pumps, etc., can solve the problem of loose steel blade rivets, safe operation of the main fan, and safe production in coal mines. , leaves falling off, etc.

Inactive Publication Date: 2010-12-15
湖北赛福机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of steel blade may cause loose rivets, so that the blade may fall off, which has an extremely adverse effect on the safe operation of the main ventilator and the safe production of the coal mine.

Method used

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  • Production method of steel blade of counter rotating axial main fan
  • Production method of steel blade of counter rotating axial main fan

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] exist figure 1 Among them, the upper blade 1 and the lower blade 5 are provided with welding holes 4 for plug welding, and the petiole 3 is connected between the upper blade 1 and the lower blade 5 . When making the steel blade, first the junction of the lower blade 5 and the petiole 3 is welded with fillet welding, and then the welding hole 4 of the lower blade 5 is welded with the petiole 3 by plug welding. Then the junction of the upper blade 1 and the lower blade 5 front and rear edges is welded, and the welding hole 4 on the upper blade 1 is welded with the petiole 3 by plug welding. Finally, the top and root of the leaves are sealed. There can be one or more welding holes 4 on the upper blade 1 and the lower blade 5 .

Embodiment 2

[0008] exist figure 1 Among them, the upper blade 1 and the lower blade 5 are provided with welding holes 4 for plug welding, and the petiole 3 is connected between the upper blade 1 and the lower blade 5 . Firstly weld the joints around the upper blade 1 and the petiole 3 by fillet welding, then weld the welding hole 4 of the upper blade 1 to the petiole 3 by plug welding, and connect the front and rear edges of the upper blade 1 and the lower blade 5 The junction of the joint is welded, and then the welding hole 4 of the lower blade 5 is welded with the petiole 3 in a plug welding manner. Finally, the top and root of the leaves are sealed. This welding method prevents the blade from falling off the petiole. It plays an important role in improving the safety and reliability of the main ventilator.

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Abstract

The invention relates to a production method of a steel blade which is arranged on a counter rotating axial main fan and is used in a coal mine containing explosive gas. The production method is characterized in that a welding hole used for plug welding is respectively arranged on an upper blade and a lower blade, the upper blade and the lower blade are connected with a blade stalk by welding the welding holes, one blade is connected with the periphery of the blade stalk through welding, and the edge of the upper blade is connected with the edge of the lower blade through welding. The invention has the advantages of long service life, safety, reliability and difficult damage and abscission, can better ensure to be used in a special environment of a mine and ensure normal running of the production.

Description

technical field [0001] The invention relates to a method for producing steel blades on the impeller of a counter-rotating axial-flow main fan used in coal mines containing explosive gas atmospheres. Background technique [0002] In the prior art, cast aluminum blades are mostly used, which are used in the special environment of mines, are easily corroded and damaged, and have a short service life. The other is a steel blade, and the steel blade is usually an airfoil-type double-layer hollow blade connected by an upper blade and a lower blade. The connection between the upper blade, the lower blade and the petiole is generally riveted by rivets. This type of steel blade may cause loose rivets, so that the blade may fall off, which has an extremely adverse effect on the safe operation of the main ventilator and the safe production of the coal mine. Contents of the invention [0003] The object of the present invention is to provide a production method for steel blades tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/38
Inventor 甘英浩李坤徐立军
Owner 湖北赛福机械有限公司
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