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Heating device for casting sand

A technology of heating device and foundry sand, which is applied in the field of sand heating device, can solve problems such as failure to meet process requirements, achieve sufficient heat exchange, high thermal efficiency, and improve thermal efficiency

Inactive Publication Date: 2006-03-08
朱旭东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of heating device can't meet the process requirements of the temperature higher than 300 ℃

Method used

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  • Heating device for casting sand

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Embodiment Construction

[0019] like figure 1 Shown, a kind of sand heating device for foundry, it has a vertical body of furnace 1, and its height is greater than its transverse size, and there is sand inlet 18, smoke exhaust and dust removal port 3 and the dust removal pipe 20 that is connected with it at the top, The sand inlet 18 has a sand inlet trough 2, and a cold air pipe 21 is provided on the dust removal pipe 20; the smoke return pipe 4 located outside the furnace body 1 is connected to the dust removal pipe 20 at one end, and the smoke return inlet 14 at the other end. 4 is provided with boiler induced draft fan 5. There is a combustion port 13 on the outer side of the lower section close to the body of heater 1, and a burner 6 is connected thereto. The furnace wall of body of furnace 1 is made up of steel plate skin, insulation layer 7 and innermost refractory brick 8. The internal structure is from top to bottom: sand separation chamber 9, there are many sand separation pipes 10 in the ...

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Abstract

A sand heater for casting is composed of main body, top sand inlet, smoke and dust exhausting outlet, combustion box, sand discharging port, lower burning port, and heat exchanger in said combustion box. It can heat sand to 300 deg.C or higher temp. Its advantages are high efficiency and low energy consumption.

Description

technical field [0001] The invention relates to a sand heating device used in the foundry industry. technical background [0002] At present, there are two kinds of sand heating devices that are really used at home and abroad. One is a fluidized heating furnace. Its structural principle is that the sand passes through a horizontal fluidized bed covered with burners, and in the boiling state, it exchanges heat with a high-temperature flame to realize sand heating. This device has low thermal efficiency, small production capacity (3 tons / hour), and is expensive, about 2.7 million yuan, which is unaffordable for ordinary users. [0003] The other is the method of heating sand adopted by some domestic manufacturers: first burn oil, gas and other energy sources in a separate combustion chamber outside the furnace to generate high-temperature furnace gas, and then add a certain amount of normal temperature or waste heat air, Enter the sand heating unit. The temperature of the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C5/00F27B15/00
Inventor 朱旭东
Owner 朱旭东
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