Waste sand calcining system

A roasting and sand feeding technology, which is used in foundry molding equipment, machinery for cleaning/processing of casting materials, metal processing equipment, etc. energy, reduced heating time, evenly distributed effect

Pending Publication Date: 2019-03-08
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a waste sand roasting system to solve the problem tha

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] The embodiment is basically as attached figure 1 Shown: a waste sand roasting system, including a drying tower 60, a furnace body 10 and an air inlet unit connected to the bottom of the furnace body 10, the furnace body 10 includes a ceramic fiber wool heat insulation refractory layer. The drying tower 60 is located above the right side of the furnace body 10, and a bellows 64 is connected between the lower end of the drying tower 60 and the upper part of the furnace body 10. The upper part of the drying tower 60 is connected with a feed pipe 63. There are multiple sets of dispersing parts along the height direction in the drying tower 60. The dispersing part includes an inverted V-shaped dispersing plate 61 and two symmetrically arranged and enclosed inverted eight-shaped aggregates. The plate 62 and the collecting plate 62 are located below the dispersion plate 61.

[0035] Combine figure 2 As shown, the side wall of the furnace body 10 is fixedly inst...

Example Embodiment

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is that the waste sand roasting system also includes a first controller; the sand level control mechanism includes a first blower connected to the air chamber 23 and a level gauge arranged in the closed box 21. The controllers are electrically connected with the first blowers and the level gauges in the two sand level control mechanisms.

[0043] When the sand level in the upper closed box is higher than the preset value, the first controller receives the signal from the level gauge in the upper closed box, and the first controller controls the first blower connected with the upper sand pipe air chamber 23 Work, the waste sand in the sand feeding pipe flows downward to the roasting layer 12. When the sand level in the upper closed box is lower than the specified height, the first controller receives the signal from the level gauge in the upper closed box, and the first controller controls the corresp...

Example Embodiment

[0046] Example 3

[0047] The difference between this embodiment and embodiment 1 is that the waste sand roasting system also includes a second controller and a second blower, and a pipe (hereinafter referred to as the first pipe) is connected between the second blower and the air chamber 23 of the upper sand pipe ), a pipeline (hereinafter referred to as the second pipeline) is connected between the second blower and the air chamber 23 of the lower sand conveying pipe, the first pipeline is provided with a first valve, and the second pipeline is provided with a second valve. The sand level control mechanism is a level gauge arranged in the closed box 21, and the second controller is electrically connected with the first valve, the second valve and the level gauges in the two sand level control mechanisms. The air inlet unit includes a main pipe 50, a third pipe is connected between the main pipe 50 and the second blower, and a plurality of air inlet branch pipes 51 are connected...

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Abstract

The invention belongs to the technical field of casting mold material treatment equipment, and particularly discloses a waste sand calcining system. The waste sand calcining system comprises a dryingtower, a furnace body and an air inflow unit. The lower end of the drying tower communicates with the upper portion of the furnace body. An upper sealing plate is arranged in the furnace body, and multiple longitudinally-distributed communicating ways are arranged on the upper sealing plate. Burners communicating with an upper calcining layer are arranged on the furnace body. An upper sand feedingdevice is arranged on the side, away from the drying tower, of the furnace body, and a lower sand feeding device is arranged on the other side of the furnace body. Each of the upper sand feeding device and the lower sand feeding device comprises a closed box, a sand level control mechanism and a sand feeding pipe. The upper end of the closed box of the upper sand feeding device communicates withthe upper calcining layer, and the sand feeding pipe of the upper sand feeding device communicates with a lower calcining layer. The upper end of the closed box of the lower sand feeding device communicates with the lower calcining layer. The waste sand calcining system in the scheme is low in cost, short in construction period and low in energy consumption, and by means of the technical scheme, the problems that in an existing calcining furnace, waste sand cannot fully boil, and the waste sand calcining effect is not good can be solved.

Description

technical field [0001] The invention belongs to the technical field of mold material processing equipment, and in particular relates to a waste sand roasting system. Background technique [0002] The roasting furnace is the main equipment of the thermal regeneration technology of foundry waste sand. By roasting the waste sand at high temperature, the coating layer on the surface of the waste sand will fall off, and the regeneration and reuse of the waste sand will be realized. [0003] At present, the commonly used roasting furnace is a vertical two-layer roasting furnace. The upper part of the furnace body is connected with a feed pipe, and the inside of the furnace body is provided with a sealing plate. The bottom is connected with a discharge pipe and communicated with a main pipe, and a burner is arranged in the main pipe. The working process of the roaster is as follows: waste sand is added to the upper combustion chamber through the feed pipe, the waste sand flows on ...

Claims

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Application Information

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IPC IPC(8): B22C5/00
CPCB22C5/00
Inventor 熊帆熊鹰王德春陈方旭
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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