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A drum-type used sand wet regeneration and dehydration integrated equipment and its use method

A wet regeneration and drum type technology, applied in the field of foundry old sand regeneration, can solve the problems of complicated process and low regeneration efficiency, and achieve the effects of improving regeneration efficiency, reducing sewage discharge, and improving flexibility

Active Publication Date: 2019-02-01
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complex in process, and the old sand after grinding needs to be washed by a spiral sand washing machine, and then dehydrated and separated separately after washing, so the regeneration efficiency is low

Method used

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  • A drum-type used sand wet regeneration and dehydration integrated equipment and its use method
  • A drum-type used sand wet regeneration and dehydration integrated equipment and its use method
  • A drum-type used sand wet regeneration and dehydration integrated equipment and its use method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Example 1, see Figure 5 , using the above-mentioned drum-type old sand wet regeneration and dehydration integrated equipment to regenerate the ester-hardened water glass old sand, the mesh number of the filter screen 2 is 100 mesh, specifically comprising the following steps:

[0045] Step S1, provide the drum type used sand wet regeneration and dehydration integrated equipment as mentioned above, through the water tank water inlet 9 and the sand inlet 7 respectively into the water tank 5 and the porous sand washing cylinder 1 Add water and old sand. In this embodiment, the mass ratio of the used sand to the water is 1:0.3; it can be understood that in other embodiments, the mass ratio of the used sand to the water can be 1:0.3-1:2 Any value of , any value within 1:0.3~1:0.5 is preferred.

[0046] Step S2, start the variable-frequency speed-regulating motor 22, and run the frequency-variable speed-regulating motor 22 at a speed of 30 r / min for 10 minutes to complete ...

Embodiment 2

[0050] Embodiment 2, embodiment 2 is basically the same as embodiment 1, the difference is that the variable frequency speed regulating motor 22 in step S2 runs at a rotating speed of 30r / min for 30min, and the rotating speed of the variable frequency speed regulating motor 22 during dehydration is 1000r / min, centrifugal dehydration time is 10min. In this embodiment, the mesh number of the filter screen 2 is 200 mesh.

Embodiment 3

[0051] Embodiment 3, this embodiment relates to CO 2 Regeneration of hardened water glass old sand, the mesh number of the filter screen 2 is 100 mesh. Embodiment 3 is basically the same as Embodiment 1, except that the mass ratio of old sand to water in step S1 is 1:0.5.

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Abstract

The invention belongs to the technical field of foundry used sand reclaiming, and discloses a roller type used sand wet reclaiming and dewatering integrated device. The roller type used sand wet reclaiming and dewatering integrated device comprises a supporting and tilting mechanism, a used sand wet reclaiming and dewatering mechanism and a water supply and drainage mechanism, wherein the used sand wet reclaiming and dewatering mechanism and the water supply and drainage mechanism are arranged on the supporting and tilting mechanism; the used sand wet reclaiming and dewatering mechanism comprises a porous sand washing cylinder which is connected to the supporting and tilting mechanism in a rotating mode; the water supply and drainage mechanism comprises a water tank connected to the supporting and tilting mechanism; water is stored in the water tank; the porous sand washing cylinder is partially contained in the water tank; and the height of the liquid level in the water tank is controlled so as to enable the roller type used sand wet reclaiming and dewatering integrated device to be in a used sand reclaiming state or a centrifugal dewatering state. The device has both the used sand reclaiming function and the centrifugal dewatering function, the reclaiming efficiency can be improved, and the water consumption can be reduced. The invention further relates to a using method for the roller type used sand wet reclaiming and dewatering integrated device.

Description

technical field [0001] The invention belongs to the technical field related to the regeneration of foundry used sand, and more specifically relates to a drum-type used sand wet regeneration and dehydration integrated equipment and a use method thereof. Background technique [0002] my country is the world's largest foundry country. At present, the output of various castings reaches 46.2 million tons, of which more than 80% of the castings are produced by sand casting, so a large amount of used casting sand will be produced. The abandonment of a large amount of old sand not only causes a great waste of resources, but also brings great harm to the environment. [0003] Commonly used foundry sand regeneration methods include dry regeneration, wet regeneration, and thermal regeneration, which correspond to different regeneration equipment. Dry regeneration is the use of air or mechanical methods to regenerate old sand by collision and friction between old sand and metal compone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C5/02B22C5/04B22C5/08
CPCB22C5/02B22C5/0459B22C5/08
Inventor 樊自田龚小龙刘富初王黎迟蒋文明刘鑫旺吴和保
Owner HUAZHONG UNIV OF SCI & TECH