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A blade angle adjustment device for counter-rotating main ventilator for mine

A blade angle and adjustment device technology, which is applied to components, mechanical equipment, machines/engines, etc. of pumping devices used for elastic fluids, and can solve problems such as loose nuts, easy corrosion, and long adjustment time intervals

Active Publication Date: 2020-04-07
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the blade angle adjustment device for counter-rotating main ventilators used in mines usually adopts structural methods such as the contact between the blade petiole and the tapered surface of the petiole sleeve, and the locking of the blade tenon with a threaded nut. Requirements for disassembly and assembly, under the action of damp and corrosive gases in coal mines, the blade tenon and tenon sleeve are easily corroded, seized, the thread fails, and the nut is loose, which makes it difficult to rotate the blade, poor angle adjustment accuracy, and even causes the blade angle to be unable to adjust

Method used

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  • A blade angle adjustment device for counter-rotating main ventilator for mine
  • A blade angle adjustment device for counter-rotating main ventilator for mine
  • A blade angle adjustment device for counter-rotating main ventilator for mine

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Embodiment Construction

[0011] see figure 1 and figure 2 , The blade angle adjustment device of the mine counter-rotating main fan of the present invention is composed of a blade 1, a mounting seat 2, a positioning block 3, and a clamp 4. Among them, the mounting seat 2 is welded on the drum, the tenon of the blade 1 is placed in the inner hole of the mounting seat 2, and a U-shaped groove is provided on the head of the tenon of the blade 1, which is used for the clamp 4 to lock the blade, and a horizontal plane is set on the surface of the tenon. This horizontal plane sticks to the inclined surface of the positioning block 3 and is used to fix the blade angle. The positioning block 3 is fixed on the mounting base 2 by screws, the end surface of the positioning block 3 is provided with slopes with different angles, and the installation angle of the blade 1 is determined by the slope of the positioning block 3 . The surface of the clamp 4 is provided with a conical surface with a certain angle. The...

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Abstract

The invention relates to a novel mining counter-rotating main fan blade angle adjusting device. The device is provided with a blade, a mounting base, a positioning block, hoops and a screw, wherein ablade tenon is provided with a plane; the positioning block is provided with slopes with different angles and fixed to the mounting base through the screws; and the hoops are used for radically locking the blade tenon; and the two semicircular hoops are locked through the screws. The device is reasonable in structural design, the defects of tenon thread failures, rusting or non-removable engagement of tenons and tenon sleeves, difficult blade rotation and low angle adjusting precision of traditional structures can be effectively overcome, in addition, the structural design is reasonable, the effect that the blade angle is flexible and convenient to adjust and high in precision can be reliably ensured, and the safety and reliability of a mining counter-rotating main fan are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of counter-rotating main ventilators, and relates to a blade angle adjustment device for counter-rotating main ventilators used in mines. The adjusting device has the remarkable characteristics of simple structure, convenient disassembly and assembly, and high angle adjustment precision. Background technique [0002] At present, the blade angle adjustment device for counter-rotating main ventilators used in mines usually adopts structural methods such as the contact between the blade petiole and the tapered surface of the petiole sleeve, and the locking of the blade tenon with a threaded nut. Requirements for disassembly and assembly, under the action of damp and corrosive gases in coal mines, the blade tenon and tenon sleeve are easily corroded, seized, the thread fails, and the nut is loose, which makes it difficult to rotate the blade, poor angle adjustment accuracy, and even causes the blade angle to be u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/30
CPCF04D29/281F04D29/287F04D29/30
Inventor 张军钟绍辉高文辉李延其
Owner AECC SICHUAN GAS TURBINE RES INST
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