KR200222931Y1 - Regenerating apparatus of wasted wax for lost wax casting process - Google Patents

Abstract

The present invention relates to a waste wax recycling apparatus for collecting and reclaiming waste wax discarded from an auto graph after the mold is manufactured by a lost wax process, which is a kind of precision casting.

The present invention heats the wax recovered from the autograph by steam heating dissolution device of the lost wax method, removes water and impurities through two or more purification processes, and finally impurities remaining in the wax through filtering process using filter paper. Is to remove it completely.

The present invention is to remove the moisture and impurities by heating the waste wax using the steam heating dissolving device of the lost wax method as it is, the regeneration time is short, and no additional equipment is required, so the cost can be minimized. Recovery and regeneration cycles can be carried out continuously.

In addition, by removing the impurities from the wax, which is primarily water and impurities removed by heating, through the filtering method using filter paper, the composition and properties of the wax are not changed at all, thereby ensuring the reliability of the product. There is an easy advantage.

Description

Regenerating apparatus of wasted wax for lost wax casting process

The present invention relates to a waste wax recycling apparatus for collecting and reclaiming waste wax discarded from an auto graph after the mold is manufactured by a lost wax process, which is a kind of precision casting.

More specifically, the waste wax is collected from an auto graph, followed by two or more purification processes to remove moisture and impurities, and finally, impurities are removed by using filter paper. The present invention relates to a waste wax reclaiming apparatus for casting lost wax, which enables the reuse of wax without changing the properties.

In general, the Lost wax process, a type of precision casting method, melts wax into a mold to make a model, burys the model in a mold material, dries it, heats it to melt it, and then heats the model again to completely burn it out. How to make a mold.

In the mold formed in this way, the hollow part of the same shape remains in the place where the model is removed, and the molten alloy is injected and solidified to obtain the casting.

Compared with other casting methods, this method has the advantage of high precision, clean surface, and casting of complex shape.

In other words, the casting method using the lost wax method is to form a wax, a ball, or a ball of a product in advance, and then assemble these to form a wax model called a child, and then apply a refractory to the surface of the mold to form a mold. To form.

In addition, when the mold is completed, it is dried and heat is applied to the wax in the mold so that the molten wax flows down through the spout, forming a hollow in the place where the wax was, and injecting a molten alloy into the hollow A casting of the same shape as that of the part is obtained.

During the above operation, the wax used at least once is recovered for regeneration, and when recovering the wax, the wax model is drooped underneath, and the inside of the autograph is heated to melt the formed wax so that it flows through the tank. do.

However, the wax recovered from the mold by the above method is damaged and contains impurities or moisture in the inside. In order to use this wax again as a model, the wax is removed to restore the quality to its original state. Should give.

In the past, the heat treatment bicarbonate method was used to reclaim the recovered wax. This method is difficult to completely remove moisture and impurities, and it is necessary to maintain the wax at a constant temperature. The composition and the properties of the easy to change, the process was difficult to mass-produced disadvantages.

Another prior art is 'wax recovery method by steam dewaxing of lost wax casting method' disclosed in Japanese Laid-Open Patent Publication No. 56-139253.

To summarize the contents of the 56-139253, after removing impurities from the wax taken out of the autograph, the wax is rapidly cooled and frozen, and the frozen wax is sublimated in a vacuum to remove moisture from the wax.

However, this method requires rapid freezing of the wax from which impurities have been removed and sublimation of the frozen wax in a vacuum state to remove moisture. Therefore, an additional facility such as a vacuum device is required along with a sudden temperature change, resulting in excessive investment of equipment. However, there was a problem that the cost of the wax is expensive to recycle.

The present invention has been devised to solve these problems, and the technical problem is that the wax composition and characteristics are changed by removing moisture and impurities through heating and cleaning of the wax recovered from the autograph, followed by two or more purification and filtering processes. It is to be able to obtain a reusable wax without making it.

1 is a schematic view for explaining a playback device of the present invention

※ Explanation of code for main part of drawing

10: steam heating melting tank 11: inlet

12: outlet 20: thermal insulation tank

21: inlet 22: outlet

30: stirring dissolution tank 31: inlet

32: outlet 40: transfer compression pump

50 filter 60 filter

70 pipe line 71 transfer pump

80: piping line 81: transfer pump

90: piping line 91,92,93: valve

100: piping line 101,102: valve

110: motor 120: shaft

121: upper stirring blade 122: lower stirring blade

130: waste wax 140: impurities

In order to achieve the above object, the present invention heats the wax recovered from the autograph with a steam heating dissolution device of the lost wax method, removes water and impurities through two or more purification processes, and finally, a filtering process using filter paper. Through this, impurities remaining in the wax are completely removed.

The present invention is to remove the moisture and impurities by heating the waste wax using the steam heating dissolving device of the lost wax method as it is, the regeneration time is short, and no additional equipment is required, so the cost can be minimized. Recovery and regeneration cycles can be carried out continuously.

In addition, by removing the impurities from the wax, which is primarily water and impurities removed by heating, through the filtering method using filter paper, the composition and properties of the wax are not changed at all, thereby ensuring the reliability of the product. There is an easy advantage.

Hereinafter, the playback apparatus of the present invention will be described with reference to the accompanying drawings.

1 is a schematic view for explaining the playback apparatus of the present invention.

As shown in the drawing, the regeneration apparatus of the present invention heats the waste wax 130 recovered from the autograph of the lost wax casting apparatus, and vapor-heat dissolving tank 10 for first removing moisture and impurities 140 contained therein; ;

Thermal insulation tank for removing moisture and impurities 140 by storing the waste wax 130 transferred from the steam heating dissolution tank 10 through a pipe line 70 provided with a transfer pump 71 for a predetermined time ( 20);

The waste wax 130 transferred from the insulating tank 20 through the pipe line 80 provided with the transfer pump 81 is stirred with upper and lower stirring blades 121 and 122 rotated by the motor 110 to be in the waste wax. A stirred dissolution tank 30 for maintaining uniformly the distribution state, composition and properties of remaining residual impurities;

A transfer compression pump 40 installed in a pipe line 90 connecting the stirring dissolution tank 30 and the filter 60 to forcibly transfer the stirred waste wax to the filter;

A filter (50) installed in the piping line (90) between the stirred dissolution tank (30) and the transfer compression pump (40) to remove residual impurities in the waste wax to be transferred;

A filter (60) for finally filtering the waste wax conveyed by the transfer compression pump (40);

The pipe line 100 for discharging the recycled wax filtered by the filter 60 to the outside;

The steam heating dissolution tank 10 is connected to the steam pipe of the boiler as a hopper shape and is heated by steam heat of about 140 ° C. or higher supplied by the boiler.

An inlet 11 for injecting the waste wax collected from the autograph is formed on the upper side of the steam heating dissolution tank, and the outlet for discharging the waste wax together with the impurities 140 precipitated and discharged therein. 12 is formed.

Insulating tank 20 is the same shape as the steam heating dissolution tank 10, the inlet port 21 is the waste wax 130 is dissolved in each of the upper and lower sides and the outlet port 22 is settled and discharged impurities 140 Is formed.

The insulation tank is wrapped with a heat insulating material, and keeps the insulation for a predetermined time in a dissolved state of the spent wax.

The stirring dissolution tank 30 also has the same shape as the steam heat dissolving tank 10 and the thermal insulation tank 20, and an inlet 31 and an outlet 32 through which the waste wax 130 dissolved, respectively, are introduced. .

A motor 11 is installed above the inlet 31 of the stirring dissolution tank, a shaft 120 installed in the motor is installed in the center of the tank, and an upper and lower part for stirring the waste wax injected into the upper and lower sides of the shaft. Stirring blades 121 and 122 are installed.

The transfer compression pump 40 is installed in a pipe line 90 connecting the outlet 32 of the stirring dissolution tank 30 and the filter 60 to serve to force transfer the waste wax in the stirring dissolution tank to the filter. .

The filter 50 has a filter paper for removing impurities in the waste wax therein, and is installed in the pipe line 90 between the outlet 32 of the stirring dissolution tank and the transfer compression pump 40.

The filter 60 is a cylinder, and a filter is built in the inside thereof, and after filtering the waste wax injected into the upper side of the filter, the filter 60 discharges to the outside through the pipe line 100 at the bottom.

Transfer pumps 71 and 81 and valves 91 and 92 to transfer waste wax in a dissolved state between the steam heating dissolution tank 10, the thermal insulation tank 20, the stirring dissolution tank 30, and the filter 60. Piping lines 70, 80, and 90 having 93 are connected.

In addition, a pipe line 100 having valves 101 and 102 is installed on the bottom of the filter 60 to discharge the filtered filtered wax outward.

Referring to the operation and operation of the present invention configured as described above are as follows.

First, the waste wax mass collected by the autograph of the lost wax casting apparatus is thrown into the inlet 11 of the steam heating dissolution tank 10.

The injected waste wax is dissolved by steam heat of about 140 ° C. or higher supplied from the boiler and the moisture contained therein is evaporated, the impurities 140 are precipitated to the bottom surface, and the precipitated impurities are discharged through the outlet 12. Water and impurities 140 included in the waste wax 130 are first removed.

At this time, the impurities 140 are mainly precipitated at the same time as the melting and discharged to the outside.

The waste wax 130 in which water and impurities 140 are first removed is introduced into the inlet 21 of the insulating tank 20 through the pipe line 70 by the transfer pump 71.

Waste wax 130 introduced into the thermal insulation tank is stored while being kept warm for a predetermined time in a dissolved state, so that the remaining moisture and impurities 140 which have not been removed from the steam heating dissolution tank 10 are secondary by evaporation and precipitation. Will be removed.

At this time, the precipitated impurities 140 are discharged to the outside through the outlet 22 of the bottom.

Secondary waste wax 130 from which moisture and impurities have been removed is introduced into the inlet 31 of the stirring dissolution tank 30 through a pipe line 80 in which the transfer pump 81 is installed.

The waste wax 130 introduced into the stirred dissolution tank is mixed evenly by the upper and lower stirring blades 121 and 122 rotated by the motor 110 to maintain uniform distribution of residual impurities and composition and characteristics in the waste wax.

The stirred waste wax is introduced into the pipe line 90 connected to the outlet 32 by the transfer compression pump 40.

The waste wax flows into the pipe line 90 and then passes through the valve 91 and the filter 50 to remove residual impurities. The waste wax is then passed through the valves 92 and 93 by a transfer compression pump. Inflow to the top of 60).

Waste wax introduced into the filter is filtered through the filter and finally discharged through the pipe line 100 in which impurities are completely removed, and the discharged waste wax is less than 0.01% of quality standard ASH (ash content) of wax. This is a recovered recycled wax.

The regeneration apparatus of the present invention repeats the above operation to continuously recycle the waste wax.

As described above, the present invention heats the wax recovered from the autograph with a steam heating dissolving device of a roast wax device, removes water and impurities through two or more purification processes, and finally, filters through a filter paper. To remove the residual impurities in the wax completely to produce a recycled wax.

Therefore, the present invention can continuously perform the recovery and regeneration cycle of the wax by removing the moisture and impurities in the waste wax using the steam heating dissolving device of the lost wax device as it is, and can shorten the regeneration time.

In addition, there is no need for additional equipment to minimize the cost of regeneration, it is useful to prevent pollution.

In addition, instead of adding a separate chemical to waste wax, by removing the impurities in a filter method using filter paper, the wax from which moisture and impurities are first removed by heating does not change the composition and properties of the wax at all. The reliability can be expected, and mass production is easy.

Claims (2)

A steam heating dissolution tank 10 for heating the waste wax 130 recovered from the autograph of the lost wax casting apparatus to first remove moisture and impurities 140 contained therein; Thermal insulation tank for removing moisture and impurities 140 by storing the waste wax 130 transferred from the steam heating dissolution tank 10 through a pipe line 70 provided with a transfer pump 71 for a predetermined time ( 20); The waste wax 130 transferred from the insulating tank 20 through the pipe line 80 provided with the transfer pump 81 is stirred with upper and lower stirring blades 121 and 122 rotated by the motor 110 to be in the waste wax. A stirred dissolution tank 30 for maintaining uniformly the distribution state, composition and properties of remaining residual impurities; A transfer compression pump 40 installed in a pipe line 90 connecting the stirring dissolution tank 30 and the filter 60 to forcibly transfer the stirred waste wax to the filter; A filter (50) installed in the piping line (90) between the stirred dissolution tank (30) and the transfer compression pump (40) to remove residual impurities in the waste wax to be transferred; A filter (60) for finally filtering the waste wax conveyed by the transfer compression pump (40); And a piping line (100) for discharging the regenerated wax filtered out by the filter (60) to the outside. The method of claim 1, wherein the steam heating dissolution tank 10 is connected to the steam pipe of the boiler is heated by steam heat of about 140 ° C or more, and the thermal insulation tank 20 is wrapped with a heat insulating material for lost wax casting Waste wax regeneration device.