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Regenerative precoated sand roasting furnace preheating system

A technology of roasting furnace and coated sand, which is applied in the directions of preheating cost, furnace and charge, etc., can solve the problems of low air, heat loss of the roasting furnace, and increase the energy consumption of the roasting furnace, so as to reduce the usage and reduce the heat consumption. , Improve the effect of preheating effect

Pending Publication Date: 2020-12-15
重庆市益环覆膜砂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the coated sand is prepared by the thermal method, the roasting furnace is used to roast the sand grains. In the prior art, the temperature of the roasted sand grains sent into the roasting furnace is relatively low, and the air sent into the roasting furnace for combustion is also low, so that Cause heat loss in the roaster, thereby increasing the energy consumption in the roaster

Method used

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  • Regenerative precoated sand roasting furnace preheating system
  • Regenerative precoated sand roasting furnace preheating system
  • Regenerative precoated sand roasting furnace preheating system

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Basic as attached figure 1 , attached figure 2 , attached image 3 , attached Figure 4 And attached Figure 5 Shown: a regenerative coated sand roasting furnace preheating system, including a feed chamber 3, a preheating chamber 2 and a preheating bag 5. Feeding chamber 3, preheating chamber 2 and preheating bag 5 are all installed on the roasting furnace 1 in the present embodiment.

[0037] In this embodiment, the upper and lower parts of the feeding chamber 3 are provided with openings, and the side walls of both sides in the feeding chamber 3 are fixed with several feeding plates 31 by bolts, and the feeding plates 31 on both sides are along the feeding The longitudinal direction of the chamber 3 is arranged in a staggered manner, and the feeding plate 31 is obliquely facing the middle of the feeding chamber 3, and the arrangement of the feeding plate 31 can form a deflector channel for sand particles to pass through. The outer side wall of the feed chamber 3...

Embodiment 2

[0050] The difference between embodiment two and embodiment one is that, as attached Figure 6 And attached Figure 7 As shown, there is a cavity 311 in the feed plate 31, and the cavity 311 is communicated with a number of air holes 312 uniformly distributed on the feed plate 31. Air plates 313 are arranged in the air holes 312, and the air plates 313 are arranged obliquely. The end of 313 near the upper surface of feed plate 31 is higher than the end of gas plate 313 away from the upper surface of feed plate 31, the bottom of gas plate 313 is provided with return spring 314, and one end of return spring 314 is fixed on the feed plate 31, resets The other end of the spring 314 is fixed on the air plate 313, and the air plate 313 has some air holes, and the diameter of the air holes is smaller than the diameter of the sand grains. The cavity 311 is communicated with a hose, and the hose is communicated with an air pump.

[0051] The specific implementation process is as foll...

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Abstract

The invention relates to the technical field of precoated sand roasting energy conservation, and discloses a regenerative precoated sand roasting furnace preheating system. The system comprises a feeding chamber and a preheating bag. The preheating bag is used for collecting waste gas and roasted sand grains. A baffling channel is formed in the feeding chamber, and a preheating chamber used for preheating the sand grains is formed in the side wall of the feeding chamber. The upper part of the preheating bag communicates with a waste gas pipe, and the waste pipe communicates with the preheatingchamber. The regenerative precoated sand roasting furnace preheating system is simple in structure, can preheat the sand grains which enter the roasting furnace, loss of heat in the roasting furnaceis reduced, then consumption of natural gas is reduced, and the purpose of saving energy is achieved.

Description

technical field [0001] The invention relates to the technical field of coated sand roasting and energy saving, and specifically discloses a preheating system for a regenerative coated sand roasting furnace. Background technique [0002] Coated sand is the molding sand or core sand whose surface is covered with a layer of solid resin film. The preparation process of coated sand has two kinds of cold method and hot method: the cold method dissolves the resin with ethanol, and adds urotropine during the sand mixing process, so that the two are coated on the surface of the sand grains, and the ethanol volatilizes to obtain the coated sand. Coated sand: roast the sand to a certain temperature by thermal method, add resin to melt it, coat the resin on the surface of the sand by stirring, add urotropine aqueous solution and lubricant, cool, crush and sieve to obtain the coating Sand and coated sand are mainly used for steel castings and iron castings. [0003] When the coated san...

Claims

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Application Information

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IPC IPC(8): F27D13/00F27D17/00B22C5/00
CPCB22C5/00F27D13/00F27D17/004F27M2003/02Y02P10/143
Inventor 张雪涛
Owner 重庆市益环覆膜砂有限公司
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