CN112169911A

CN112169911A - Alpha infrared heating mill

Info

Publication number: CN112169911A
Application number: CN201910597171.XA
Authority: CN
Inventors: 朱德恩
Original assignee: Shanghai Guli Intelligent Equipment Co ltd
Current assignee: Shanghai Guli Intelligent Equipment Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2021-01-05

Abstract

The alpha infrared heating abrasive disc is made of non-pressure sintered polycrystalline silicon carbide with high heat conductivity, high hardness, acid and alkali resistance and high infrared emissivity, and through slotting in the back of the abrasive disc, setting corrugated Ni-Cr high-resistance electrothermal alloy, insulating heat with nanometer zirconium silicate heat insulating material and coating stainless steel protecting jacket. 0.025-0.035w (Wm.k) zirconium silicate rigid thermal insulation sleeve.

Description

Alpha infrared heating mill

Technical Field

The invention relates to a heating grinding disc, in particular to an alpha infrared heating grinding disc and application thereof.

Background

The powder food is popular among people because of convenience and rapidness, and the five-cereal powder and the rice flour are more necessary at home.

The market generally adopts the processes of baking, grinding and refining, and basically has 3 to 5 processes, which causes much waste and product oxidation.

Researches prove that the color, the flavor and the nutrition of the powdery food which is processed by heating the raw materials, is heated along with the moisture in the grains and is subjected to the action of the shearing force of blades are superior to those of the powdery food processed by the traditional two-step method.

The infrared radiation can enhance the oxidation resistance of the grains, improve the flavor of the food and has good antibacterial and bacteriostatic effects.

Disclosure of Invention

Alpha polycrystalline silicon carbide is sintered under no pressure, multi-layer graphene is toughened, and the graphene and silicon carbide micro powder adopt a high-frequency resonance mixing technology.

The microwave sintering temperature is 1950-2100 ℃ or 1900 DEG hot-pressed sintering

The content of the graphene is 8-12% (mass fraction).

The orientation of the silicon carbide whiskers plays a key role in the influence of thermal shock induced crack propagation.

The mould is formed in a pressing mode, and the mould is provided with the rasping lines in a specific row sequence.

The back is provided with a specially designed corrugated nickel-chromium electric heating wire groove and a corrugated nickel-chromium electric heating wire.

The three-stage grinding type structure design, coarse powder path, medium powder path and powder path ensure the granularity of the powder.

The lines designed by special arrangement are convenient for discharging without residual materials.

A nanopore thermal insulation plate and an opaque blocking infrared heat dissipation material.

And (3) a nanometer micro-zirconia housing.

Drawings

FIG. 1 is an overall rear view;

FIG. 2 is an aerogel insulation cover

FIG. 3 is a schematic structural view of an aluminum alloy housing;

FIG. 4 is a schematic view of a heater wire groove structure;

FIG. 5 is a sectional view of the entire machine;

in the figure: 1. the shell 2, the spline hole 3, the nickel-chromium electric heating wire groove 4 and the ceramic working surface.

Example of the implementation

And (3) mixing the silicon carbide micro powder with the particle size of 1-5 microns with the multilayer graphene through high-frequency resonance for 2-3 hours.

And filling the mould into a pressing mould, and performing isostatic pressing secondary finishing.

Sintering at 2100 deg.C for 2 hr, and holding for 6 hr.

Ensuring smooth grinding tooth path.

Claims

1. The alpha infrared heating grinding disc features its pressureless sintered silicon carbide grinding disc with teeth on its surface, which is produced through gel injection molding or isostatic pressing and secondary grinding.

2. The alpha infrared heating grinding disc as claimed in claim 1, wherein the grinding disc is integrally designed with a silicon carbide heat exchanger and a pressureless sintered silicon carbide grinding disc, and is formed in one step.

3. The alpha infrared heating millstone as claimed in claim 1, wherein the grinding insection tooth path of the millstone is designed based on the principle of metal tooth-cutting machine, and is an essential innovation compared with the traditional millstone grinding machine.

4. The alpha infrared heating grinding disc as claimed in claim 1, wherein the grinding disc makes full use of the high thermal conductivity, high hardness and thermal stability of pressureless sintered silicon carbide, while the traditional sintered grinding tool has low thermal conductivity and poor strength due to ceramic bond and pores.

5. The alpha infrared heating millstone of claim 1, wherein infrared radiation is used to improve the oxidation resistance of grains, improve the flavor of food, and have antibacterial and bacteriostatic properties.

6. The alpha infrared heating millstone of claim 1, wherein the grinding pattern tooth path is designed in a three-stage manner, and the grinding, shearing and grinding are integrated, so that the grinding particle size is effectively controlled.

7. The alpha infrared heating millstone of claim 1, wherein the milled tooth path of the scheme is designed in a three-section vortex structure, the discharge is smooth, and no residue is left after the millstone is stopped.

8. The alpha infrared heating abrasive disc according to claim 1, wherein the nano-pore heat preservation principle and the infrared blocking technology are utilized.

9. The alpha infrared heating abrasive disk according to claim 1, wherein the zirconium silicate composite silica is a rigid thermal insulation plate.

10. The high-frequency resonance multiphase flow mixing is to put the silicon carbide micro powder which is macroscopically stirred uniformly into a cylindrical container, and a space of 40-50 percent is reserved. The motor drives the container 6000 and 20000 times/min high-frequency vibration to form multiphase flow of air, micro powder and crystal whisker, and the cyclone and anti-cyclone microscopic tornado phenomenon is formed by changing the vibration frequency of the motor and the specific electromagnetic design. The materials are fully and uniformly mixed, and the phenomena of over-grinding and winding of the ball mill are avoided.

11. The three-section design of the plate surface comprises crushing, coarse powder and fine powder, feeding and crushing, coarse powder shearing and fine powder shearing and grinding, the powder particle size is ensured, the edges of the fixed plate are uniformly distributed, and the triangular shear lines are arranged from deep to shallow and from coarse to fine. The driving disc is of a two-section type, the edge of the driving disc is a smooth plane, and the driving disc is completely attached to the fixed disc.

12. The back is provided with an annular loop groove for placing a corrugated nickel-chromium heating wire. The nano-pore inorganic heat-insulating slurry is sealed in a heat-insulating way, the size of a gap after the slurry is dried is smaller than 70nm of a free path of collision of gas molecules, the gas molecules participating in heat transfer cannot pass through the gap, and the nano additive which is opaque to infrared rays is added to block infrared heat radiation.

And 13, the PTFE integrally-formed cover is formed by isostatic pressing or machining, and the strength is improved by using the 260 ℃ nanometer zirconia for a long time.

14. The infrared heating abrasive disc of claim 1, wherein PTFE, in particular, self-lubricating, non-sticking, insulating, resistance greatly improves food safety and environmental cleanliness. 5-10 percent of nano zirconia, nano zinc oxide, silver antibacterial agent and the like are sintered under static pressure at 380-395 ℃, so that the strength of the PTFE is enhanced.

15. The alpha infrared heating abrasive disc according to claim 1, wherein the enhanced PTFE casing effectively prevents heat dissipation, secures the abrasive disc, reduces hard impact damage, and is self-cleaning.

16. The alpha infrared heating abrasive disk according to claim 1, wherein the driving disk is powered by a slip ring disposed above the housing, the slip ring being hollow and fixed to the shaft.