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A high-temperature-resistant shut-off fan

A high-temperature-resistant, fan-off technology, applied in conveyors, metal material coating processes, coatings, etc., to increase wear resistance and heat resistance, improve sealing, and improve sealing effect.

Active Publication Date: 2022-03-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical defects in the prior art, the present invention provides a high-temperature-resistant shut-off fan, which will not affect the sealing performance or cause jamming due to high-temperature expansion or deformation of the blades at relatively high temperatures

Method used

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  • A high-temperature-resistant shut-off fan
  • A high-temperature-resistant shut-off fan
  • A high-temperature-resistant shut-off fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Surface pretreatment of blade 6:

[0038] The surface of the blade 6 is polished with a 180# emery wheel and then polished again with metallographic sandpaper to obtain a smooth and flat surface. After cleaning with alcohol, put it in a vacuum drying oven for drying.

[0039] 2) Configure laser cladding powder

[0040] Mix according to the percentage Ni60:WC=9:1, and the mixed powder is ball milled in a ball mill for 2 hours.

[0041] 3) Preset powder

[0042] After the mixed composite powder is taken out and dried, the mixed powder is fully mixed with a polyvinyl alcohol organic adhesive with a mass concentration of 3%wt.%, to form a paste, and evenly spread on the surface of the treated blade 6 , the preset layer thickness is 0.9-1mm, the surface is flattened, and finally placed in a drying oven to dry for use.

[0043] 4) Preparation of Ni60+WC composite coating by laser cladding

[0044] Put the processed blade 6 on the platform of the laser, set the process ...

Embodiment 21

[0049] Embodiment 21) blade 6 surface pretreatment:

[0050] The surface of the blade 6 is polished with a 180# emery wheel and then polished again with metallographic sandpaper to obtain a smooth and flat surface. After cleaning with alcohol, put it in a vacuum drying oven for drying.

[0051] 2) Configure laser cladding powder

[0052] Mix according to the percentage Ni60:WC=4:1, and the mixed powder is ball milled in a ball mill for 2 hours.

[0053] 3) Preset powder

[0054] After the mixed composite powder is taken out and dried, the mixed powder is fully mixed with a polyvinyl alcohol organic adhesive with a concentration of 3%wt.%, to form a paste, and evenly spread on the treated Q235 steel surface , the preset layer thickness is 0.9-1mm, the surface is flattened, and finally placed in a drying oven to dry for use.

[0055] 4) Preparation of Ni60+WC composite coating by laser cladding

[0056] Put the processed blade 6 on the platform of the laser, set the process ...

Embodiment 3

[0062] 1) Surface pretreatment of blade 6:

[0063] The surface of the blade 6 is polished with a 180# emery wheel and then polished again with metallographic sandpaper to obtain a smooth and flat surface. After cleaning with alcohol, put it in a vacuum drying oven for drying.

[0064] 2) Configure laser cladding powder

[0065] Mix according to the percentage Ni60:WC=7:3, and the mixed powder is ball milled in a ball mill for 2 hours.

[0066] 3) Preset powder

[0067] After the mixed composite powder is taken out and dried, the mixed powder is fully mixed with a polyvinyl alcohol organic adhesive with a concentration of 3%wt.%, to form a paste, and evenly spread on the surface of the treated blade 6 , the preset layer thickness is 0.9-1mm, the surface is flattened, and finally placed in a drying oven to dry for use.

[0068] 4) Preparation of Ni60+WC composite coating by laser cladding

[0069] Put the processed blade 6 on the platform of the laser, set the process param...

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Abstract

The invention discloses a high-temperature-resistant shut-off fan, which comprises: a casing, the inner ring wall of the casing is provided with a plurality of guide grooves perpendicular to the axial direction at intervals along the axial direction, and two sides of the casing are respectively provided with The inlet and outlet connected inside the shell; the rotating shaft, the rotating shaft rotates in the axial direction and is installed in the casing, and a plurality of blades along the axial direction of the rotating shaft are arranged at intervals around the rotating shaft, and the side of the blade facing the inner wall of the casing is provided with a guide groove Guided and matched convex teeth, a sealing pair is formed between the blade and the inner wall of the casing; the surface of the blade is coated with Ni60‑WC laser cladding coating, and Ni60‑WC laser cladding coating in Ni60‑WC=9:1 (mass ratio ). The blower blower of the present invention can greatly improve the airtightness of the blower blower, and can obtain better airtight effect at high temperature; Form the Ni60-WC laser cladding coating on the blade surface of the blower blower by laser cladding, preferably increases the airtightness of the blade. Wear resistance and heat resistance.

Description

technical field [0001] The invention belongs to the technical field of light blowers, and in particular relates to a high-temperature resistant shut-off blower. Background technique [0002] Shut-off fan is divided into three categories: common type, pressure-resistant type, and high-temperature-resistant type. Shut-off fan is an important device in the pneumatic conveying and ventilation dust removal network. Its main function is to continuously and timely discharge the materials in the unloader or dust collector. , while ensuring that the pressure inside the equipment is not exposed to normal pressure. The air shutoff device is widely used in the pneumatic transportation of rice milling, flour milling, feed, machinery and chemical, pharmaceutical, tobacco, metallurgy, cement and dust removal equipment and the unloading of pipeline network pressure. When the blower is turned off and used at high temperature, such as in the production of puffed submerged materials, since th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G53/46C23C24/10
CPCB65G53/46C23C24/103
Inventor 宋瑞宏涂李冬史文杰戴忞中陈晨
Owner CHANGZHOU UNIV