KR102149112B1 - Food waste treatment device using impeller and blade - Google Patents

Abstract

The present invention provides a food waste disposal machine capable of improving treatment efficiency without being damaged due to a load of food during food treatment, by adjusting arrangement of stirring blades. The food waste disposal machine of the present invention comprises an impeller having an outer curved blade in the forward rotation direction and an inner curved blade in the reverse rotation direction, and a blade.

Description

Food waste disposal machine using impeller and blade {FOOD WASTE TREATMENT DEVICE USING IMPELLER AND BLADE}

The present invention relates to a food waste treatment machine using an impeller and a blade designed in a special shape.

Currently, the amount of food waste (food waste) discharged in Korea reaches over 5 million tons per year.

In order to treat such food waste, a method of recycling food waste as a resource by producing it as fertilizer or feed, and a method of reducing and disposing of food waste by applying methods such as fermentation, dehydration, drying, and extinction are adopted. Has become.

On the other hand, in the case of the food waste processor as described above, it can be largely divided into a household food waste processor and a commercial food waste processor. In the case of a household food waste treatment machine, the daily treatment capacity is about 1 to 3 kg, which is designed to treat a small amount.

On the other hand, the processing capacity of the food waste treatment machine for business is 10kg, 30kg, 50kg, 70kg, 99kg, etc., and the daily processing capacity is much higher than that of household. Particularly, in the case of food waste disposal machines used in businesses that discharge large amounts of food waste, most of them have a daily treatment capacity of 50 kg or more, so that a large amount of food must be disposed of each day.

Since the above-described food waste is constantly discharged every day, in the case of a food waste treatment machine used in a large amount of food waste discharge business, it must be able to stably treat large-capacity waste every day.

In the case of the above-described large-capacity food waste disposal machine, since a large amount of waste must be disposed of at once, it is not a method of putting food waste several times a day, but through a method of putting a large amount of food once or twice a day. It works.

On the other hand, in order to treat food waste with a large capacity as described above, when about 50 kg of food waste is temporarily inserted into the processor per day, an excessive load acts on the shaft of the treatment device (fermentation stirrer), causing the motor and the stirring shaft. ), impeller and blade may be damaged, and the motor may stop working.

In particular, in the case of agitation blade having a general structure, due to an excessive load generated in the process of stirring the food and biologics to be introduced, a phenomenon in which the impeller and the blade are bent occurs.

In order to prevent such a phenomenon and to improve the treatment efficiency by stably and smoothly stirring the biologics and food wastes, the present invention has developed a food waste treatment device including an impeller and a blade to which a special structure design technology is applied.

The present invention includes an impeller having an outer curved blade in a forward rotation direction and an inner curved blade in a reverse rotation direction, and by adjusting the arrangement of the stirring blades composed of the impeller and the blade, if the food is not damaged due to the load of food, In addition, it provides a food waste treatment machine that can increase treatment efficiency.

The present invention in order to achieve the above object, as an embodiment, a motor for generating rotation; A stirring shaft rotated according to the rotation of the motor; An impeller attached to the stirring shaft and extending in a vertical direction of the stirring shaft and having an outer curved blade in a forward rotation direction and an inner curved blade in a reverse rotation direction; And a blade attached to the end of the extended impeller; including, the number of forward rotations of the stirring shaft: the number of reverse rotations is 2:1 to 20:1.

In another embodiment of the present invention, the blade provides a food waste treatment machine, characterized in that it has a triangular blade in a forward rotation direction and an arc blade in a reverse rotation direction.

As another embodiment of the present invention, in the case of the stirring blade formed by the combination of the impeller and the blade, the angle of the stirring blade No. 2 is 160 to 200° based on No. 1, and the angle of the stirring blade No. 3 is 40 to 80° based on No. 1 It provides a food waste treatment device, characterized in that the arrangement.

As another embodiment of the present invention, in the case of a stirring blade formed by a combination of the impeller and the blade, the 2n-th stirring blade is arranged to increase by 40 to 80° from the 2 (n-1)-th arranged stirring blade, The 2n+1 th stirring blade is arranged to increase by 40 to 80° from the 2n-1 th stirring blade, and 2≤n≤5, characterized in that, a food waste treatment device is provided.

In another embodiment of the present invention, the stirring shaft is characterized in that the rotation at 1 to 10rpm, it provides a food treatment machine.

In another embodiment of the present invention, a width of a blade blade: an impeller spacing is 1:1 to 1.3:1.

In another embodiment of the present invention, a food waste treatment device is provided, characterized in that it has a spacing of 5 to 20 mm between the blade surface and the inner wall surface of the food waste treatment device.

The present invention adjusts the arrangement of the stirring blades including the impeller and the blade having an outer curved blade in the forward rotation direction and an inner curved blade in the reverse rotation direction, so that the treatment efficiency can be improved without being damaged due to the load of food during food treatment. A food waste handler can be provided.

1 is a diagram showing the overall configuration of an organic matter treatment system.
2 is a view showing an actual product of the organic matter treatment machine.
3 is a front view showing the structure of the impeller.
4 is a view of the chamfer shape of the impeller.
5 is a rear view showing the structure of the blade.
6 is a rear view showing the structure of the blade adjacent to the wall side of the food waste treatment machine.
7 is a view of the chamfer shape of the blade.
8 is a side view showing the structure of the blade.
9 is a view of the blade and the impeller is combined stirring blade.
Figure 10 is a view of the blade, auxiliary blade and impeller is combined agitation blade.
11 is a view of a blade, a side blade and a stirring blade combined with an impeller.
12 is a view of the arrangement method of the stirring blade.
13 is a diagram illustrating an arrangement method of parts of a food waste treatment machine.
14 is a view related to the width adjustment between the stirring blades.

Hereinafter, the present invention will be described in more detail. To help understand the explanation, based on placing the stirring shaft 100 horizontally and looking at all components of the food waste treatment machine, the motor is installed on the right side and the opposite side is set to the left. no.

The present invention is an invention related to a food waste processor, specially designing the shape of the impeller and the blade constituting the stirring blade, and preventing damage due to the load of food during stirring through the arrangement method and rotation direction of the stirring blade, etc. Food processing efficiency can be improved.

The configuration of the food waste treatment machine of the present invention is as described in FIG. 1.

The food waste treatment machine is provided with a stirring shaft 100 crossing the inside, and an impeller 200 attached to the stirring shaft 100 and extending in a vertical direction of the stirring shaft.

A blade 300 is attached to an end of the extended impeller 200, and in particular, an auxiliary blade 320 may be attached to a middle portion of the impeller 200 of the food waste treatment machine.

The stirring blade including the impeller 200 and the blade 300 as described above rotates together with the rotation of the stirring shaft 100, and organic decomposition can be actively occurred by stirring the food and bio-agents flowing into the food waste processor. So it is driven.

Meanwhile, the rotation as described above is generated by the motor 400 constituting the food waste processor, and the rotation generated by the motor 400 is transmitted to the bearing housing 500 through the chain 450. Since the bearing housing 500 and the stirring shaft 100 are coupled through a connection flange 510, in conclusion, they are coupled to the stirring shaft 100 and the stirring shaft 100 through rotation occurring in the motor 400. Rotation occurs in the agitated blade.

The actual product picture of the food waste treatment machine is as shown in FIG. 2.

On the other hand, in the present invention, even if a large amount of food is introduced at once, the structure of the stirring blade is specially designed to prevent the stirring blade from being bent or damaged by the load of the food.

Specifically, the configuration of the impeller 200 of the present invention is as shown in FIG. 3.

As shown in Fig. 3, the impeller 200 of the present invention has an outer curved blade in a forward rotation direction and an inner curved blade in a reverse rotation direction. The outer curved blade is a blade that directly contacts food when the impeller rotates forward, and the blade is formed on the outside of the curved surface. The inner curved blade is a blade that directly contacts food when the impeller rotates in reverse, and the blade is formed inside the curved surface. The impeller 200 of the present invention is characterized in that the outer curved blade is longer than the inner curved blade.

Since the cross section of the impeller of a general food waste disposal machine is in the shape of a circle or square, when a large amount of garbage is put into it at once, the impeller cannot withstand static loads of food wastes and biologics or dynamic loads due to agitation during agitation and is damaged. On the other hand, in the case of the present invention, the impeller 200 having a narrow cross-section as shown in FIG. 4 uses an outer curved blade and an inner curved blade to push out biologics and food waste as if cutting with a knife, thereby giving the impeller 200 itself. The load can be minimized.

On the other hand, even in a general food treatment machine, if the impeller is thickened, damage to the impeller can be reduced.However, the weight of the impeller increased as described above increases the load acting on the motor or the stirring shaft of the food waste treatment machine. , It may cause agitation shaft warpage and motor stop. On the other hand, when designing the impeller 200 as in the present invention, since damage can be prevented without increasing the thickness of the impeller, the stirring shaft 100, the bearing housing 500, the connection flange 510 and the motor ( 400) can also be prevented.

On the other hand, in the present invention, stirring is mainly performed through forward rotation, but intermittently reverse rotation may be performed.

At this time, since the impeller of the present invention has an inner curved blade in the reverse rotation direction, a large amount of biologics and food waste can be held at once when rotating in the reverse direction, so that a large amount of stirring can be performed at once.

The reverse rotation as described above is a part of the driving method for maximizing the stirring action, and the load applied to the impeller increases rather than proceeding with the forward rotation, and when only reverse rotation is performed, the risk of damage to the impeller increases.

However, it is mainly driven by forward rotation and, if necessary, reverse rotation is performed, and when the number of forward rotation: the number of reverse rotation is appropriately controlled and driven, the stirring action can be maximized without putting a great burden on the impeller.

The control of the number of forward and reverse rotations as described above can be adjusted through the PLC control system, and an appropriate ratio of the number of forward rotations and the number of reverse rotations is preferably 2:1 to 20:1.

If the frequency ratio is less than 2:1, the load in the device increases due to the increase in the number of reverse rotations, which may cause damage to the device. Conversely, if the frequency ratio is greater than 20:1, the stirring efficiency decreases. Problems can arise.

In addition, it is preferable that the rotation rpm during the forward and reverse rotation is adjusted to 1 to 10 rpm, more preferably 4 to 8 rpm.

If the rpm is less than 1, it is not preferable because the stirring efficiency is low, and if it rotates faster than 10 rpm, it is not preferable because there is a risk of damage due to an overload in the device.

On the other hand, as described above, in the case of a food waste treatment machine, it is preferable to design the impeller to sufficiently bear the load of food while minimizing the weight of the impeller.As shown in FIG. 3, the impeller of the present invention has an end at the point attached to the stirring shaft. It can be configured so that the width becomes thinner as it goes in the direction.

The radius of curvature of the outer curved blade of the impeller is preferably 165 to 600 mm, and the radius of curvature of the inner curved blade is preferably 150 to 300 mm. In particular, it is preferable that the radius of curvature of the outer curved blade: the radius of curvature of the inner curved blade = 1.1:1 to 2.0:1.

If the curvature ratio is less than 1.1:1, the shape becomes straight and the impeller is bent or damaged, which may cause a problem that does not achieve the effect of the present invention.Conversely, if it is larger than 2.0:1, the shape becomes circular and stirred. There may be a problem that the action does not occur smoothly.

On the other hand, by chamfering the outer curved portion of the impeller 200, it is possible to lower the possibility of damage to the impeller and increase the stirring efficiency. Chamfering is a method of obliquely chamfering a corner of a work, and a specific chamfering method of the present invention is as described in FIG. 4.

Specifically, in the present invention, it is possible to perform chamfering so that the outer curved blade and the inner curved blade of the impeller 200 have a symmetrical or asymmetrical shape.

When chamfering is performed in a symmetrical shape as shown in (a) of FIG. 4, the applied load can be minimized by having a shape that pushes the biologic and food waste like a knife.

At this time, since the biologics and the food waste are split symmetrically, the chamfer as described above is preferably performed on the impeller 200 attached to the middle part of the stirring shaft of the food waste treatment machine. In this case, the impeller attached to the middle part of the stirring shaft 200 may be any impeller except for the impeller attached to both ends of the stirring shaft.

On the other hand, the angle (θ1) between both edges and both sides of the intermediate impeller 200 is preferably 110 to 165. If the angle θ1 is less than 110°, the impeller may be damaged because the load applied to the impeller increases during agitation, and if it is greater than 165, sufficient agitation may not occur.

On the other hand, as shown in (b) of FIG. 4, when chamfering is performed asymmetrically so that the length of the left edge is longer, the bio-agent and food waste are pushed to the left by the left inclined surface and stirred. At this time, the angle between the left and right edges of the impeller becomes a relatively small angle, and the angle between the right and right edges of the impeller becomes a relatively large angle.

In this way, when chamfering as described above is performed on the impellers 200-a attached to the right side of the stirring shaft of the food waste disposal machine, the impeller pushes the biologics and food waste toward the center of the food waste disposal machine while stirring. , It is possible to minimize the load acting on the right wall of the food waste treatment machine and increase the agitation efficiency.

In this case, the impeller 200-a attached to the right side of the stirring shaft may be all impellers attached to the right side with respect to the intermediate impeller 200.

Conversely, as shown in (c) of FIG. 4, when chamfering is performed asymmetrically so that the length of the right edge is longer, the bio-agent and food waste are pushed to the right by the right inclined surface and stirred. At this time, the angle between the left and right edges of the impeller becomes a relatively large angle, and the angle between the right and right edges of the impeller becomes a relatively small angle.

In this way, when chamfering as described above is performed on the impellers 200-b attached to the left part of the stirring shaft of the food waste disposal machine, the impeller pushes the biologics and food waste toward the center of the food waste disposal machine while stirring. , It is possible to minimize the load acting on the left wall of the food waste disposal machine and increase the agitation efficiency.

In this case, the impeller 200-b attached to the left portion of the stirring shaft may be all impellers attached to the left side with respect to the intermediate impeller 200.

On the other hand, in the case of the asymmetric chamfer corresponding to (b) and (c) of Fig. 4, when the relatively small angle is θ2 and the larger angle is θ3 for two angles forming asymmetrical, a small angle (θ2) It is preferable to design so that is 100 to 145° and the large angle (θ3) is in the range of 110 to 170°, and the ratio of the small angle (θ2) to the large angle (θ3) is preferably 1.1 to 1.7.

When the ratio of the angle is less than 1.1, the action of substantially pushing the biologics and food waste in one direction does not occur effectively. On the contrary, when the ratio of the angle is greater than 1.7, the stability of the impeller decreases, and food, etc. It is unfavorable because it may be biased toward the central portion of the processor, and the impeller and the stirring shaft in the central portion may be damaged.

On the other hand, it is preferable that the blade 300 attached to the end of the impeller 200 is designed to have a triangular blade in a forward rotation direction and an arc blade in a reverse rotation direction.

The triangular blade is a blade that directly faces food waste and biologics during a forward rotation, and is two straight blades that form a pointed part with a certain angle. The circular arc blade is a blade that directly faces food waste and biologics when rotating in reverse, and is a blade formed in a curved shape of a shape that penetrates the inside of the blade surface. In addition, there is a side blade between the triangular blade and the arc blade. The blade formed in the shape as described above has a plow shape. The specific shape of the blade is as described in FIG. 5.

When the blade 300 is configured to have a plow shape as described above, since the pointed part of the triangular blade is driven in a form that divides the food during normal rotation, it can be driven more easily, and the upper part of the blade 300 Since the amount of food waste is not loaded in the container, the risk of damage caused by the load is reduced.

On the other hand, since it has a circular arc blade in the reverse rotation direction and can hold a large amount of biologics and food waste at once when rotating in the reverse direction, a large amount of stirring can be performed at once.

The reverse rotation as described above is a part of the driving method for maximizing the stirring action, and the load applied to the impeller is increased rather than the forward rotation. Therefore, side blades exist to withstand the load acting on the arc blade during reverse rotation.

The length of the side blade is preferably 5mm to 20mm. If the side blade is smaller than 5mm, the impeller and the blade may be damaged due to insufficiently withstanding the load of food waste and biologics, and if it is larger than 20mm, the weight of the blade 300 becomes heavy and the impeller may be bent or damaged.

In addition, the radius of curvature of the arc blade of the blade 300 is preferably designed to be 150 to 200 mm so as to sufficiently withstand the load acting on the blade during reverse rotation and to increase the stirring efficiency.

If the radius of curvature is larger than 200 mm, a problem of poor stirring may occur, and if the radius of curvature is smaller than 150 mm, the impeller may be bent or damaged.

On the other hand, among the blades 300, the blades adjacent to the side wall surface of the food waste treatment machine are preferably configured in the form of only half of the plow shape, as shown in FIG. 6.

That is, it is preferable that the blade 300 adjacent to the left wall surface has a structure in which wings extend only to the right, and the blade 300 adjacent to the right wall surface has a structure in which the wings extend only to the left. When configured as described above, it is possible to reduce the likelihood that the device is damaged due to the blade hitting the side wall of the food waste disposal machine, and it is also possible to prevent the phenomenon that food waste is compressed on the side wall of the food waste disposal machine.

Meanwhile, chamfering may be performed on the triangular blade and the arc blade of the blade 300.

When the blade 300 is coupled to the impeller and installed in the food waste treatment unit, the surface closer to the wall surface of the stirring tank is referred to as the upper surface 301, and the opposite surface is referred to as the lower surface 302, the chamfer is shown in FIG. 7 As described in (A) of, it is preferable that the length of the upper surface is designed to be longer than the length of the lower surface.

When designed as described above, while the blade 300 rotates, it is possible to direct biologics and food waste to the inside of the stirring tank, whereas when designed in the same manner as described in (b) of FIG. Since the food waste is directed toward the wall of the stirring tank, the bio-agent and the food waste may be compressed on the blade surface and the wall of the stirring tank. When food or the like is squeezed as described above, excessive load is generated in the device and vibration is caused, which causes a vibration phenomenon and a fatigue shape due to vibration occurs in the impeller and the blade, causing damage. Can be.

On the other hand, as shown in FIG. 7, if the angle formed between the upper surface 301 and the corner 303 is θ4, and the angle formed between the lower surface 302 and the corner 303 is θ5, the θ4 is 24 to 70, the θ5 is preferably designed to be 120 to 150, the θ4: θ5 is preferably 1:2 to 1:5.

If the ratio is less than 2:1, food waste may not be sufficiently transferred in the direction of rotation, and thus food waste may be compressed on the wall of the stirring tank. Conversely, if it is greater than 5:1, the end of the blade It is not preferable because it is formed too thin and the possibility of breakage increases.

Meanwhile, in the food waste treatment machine, the impeller 200 and the blade 300 rotate in a circle. Therefore, when the blade 300 is configured to have a curvature in the shape of rotation of the blade when viewed from the side as shown in FIG. 8, the biologic agent around the wall surface and the bio-agent around the wall surface along the curvature of the circle while the blade 300 rotates. Food waste can be stirred efficiently.

The blade 300 and the impeller 200 described above are coupled as shown in FIG. 9, and the surface of the impeller and the surface of the blade are perpendicular.

On the other hand, the stirring blade of the present invention may further have a blade attached to the end of the impeller in a direction perpendicular to the plane of the impeller in addition to the blade attached to the end of the impeller.

When various types of blades are provided as described above, the blade attached to the end of the impeller 200 described above becomes the main blade 310. In the present invention, in addition to the main blade, an auxiliary blade 320 may be additionally attached to the middle portion of the impeller attached to the stirring shaft.

A plurality of auxiliary blades 320 may be installed, and the shape and chamfer are preferably the same as those of the main blade 310. On the other hand, when there is one auxiliary blade 320, the auxiliary blade 320 is preferably located in the center of the impeller 200, and when there are two auxiliary blades 320, the first auxiliary blade is attached to the stirring shaft. It is preferable that the impeller is positioned at 1/3 of its length from the start point to the end, and the second auxiliary blade is positioned at 2/3.

That is, when the number of auxiliary blades is n, the position of the auxiliary blade may be placed at a position divided by n equal lengths from the start point to the end of the impeller 200 attached to the stirring shaft 100.

A structure in which the auxiliary blade 320 is combined with the main blade 310 and the impeller 200 is as shown in FIG. 10.

Meanwhile, unlike the shape of the main blade 310, the auxiliary blade 320 may have a rectangular shape. However, also in this case, it is preferable to perform chamfering in the same way as the main blade.

In addition to the auxiliary blade 320, a side blade 330 may be added.

The side blade 330 may be installed on the impeller 200 adjacent to the side wall surface of the food waste processor to supplement the role of the main blade 310.

As described above, the main blade 310 coupled to the impeller 200 adjacent to the side wall of the food waste disposal machine is not in the shape of a whole plow, but has a shape of a half plow, so that agitation is not properly performed, and food waste and bio A phenomenon in which the agent adheres to the wall may occur, and the side blades may scrape off the bio agent and food waste attached to the wall through stirring.

On the other hand, when the shape of the side blade 330 is simply a square, the blade lifts a large amount of biologics and organic waste while stirring, so that an excessive load may be applied and the device may be damaged.

Therefore, it is desirable to reduce the applied load by making it in an uneven shape as shown in FIG. 11.

On the other hand, in the case of the side blade 330, it is preferable to install shorter than the total length of the impeller 200. The length of the side blade 330 is preferably 0.3 times to 0.7 times the length of the impeller 200.

If the length of the side blades 330 is less than 0.3 times the length of the impeller 200, the food waste accumulated on the side of the food waste disposal machine cannot be sufficiently stirred, and when it exceeds 0.7 times, excessive load is applied, It may cause damage to the device.

In the case of the stirring blade in which the blade 300 and the impeller 200 are combined as described above, it is preferable that the adjacent stirring blades are arranged so as not to be located on the same line.

If adjacent stirring blades are on the same line or are located on a similar line, food waste between adjacent stirring blades becomes a large lump in the form of a bridge and can be lifted as a whole. The large mass formed as described above may cause warpage or breakage of the device because a large load is applied to the motor, the stirring shaft, and the stirring blade as a whole.

Therefore, in the food waste treatment apparatus of the present invention, the angle is adjusted so that adjacent stirring blades are not located on the same line.

The arrangement of the stirring blades as described above is made as shown in FIG. 12.

In the arrangement of the stirring blades as described above, the leftmost stirring blade is used as the 1st stirring blade, and the stirring blades on the right side are sequentially 2,3,4 based on the 1st stirring blade. It is called agitation blade No., and the rotation direction is based on the reverse or forward direction, the angle of the stirring blade No. 2 is 160 to 200 degrees based on No. 1, and the angle of the stirring blade No. 3 is 40 to 80 degrees based on No. 1, The angle of the 2n stirring blade is designed to increase 40 to 80˚ based on the 2 (n-1) stirring blade, and the angle of the 2n+1 stirring blade is designed to increase 40 to 80˚ based on the 2n-1 stirring blade. I can. (2≤n≤5)

Therefore, the arrangement as in the present invention is most suitable to increase the stirring efficiency while preventing damage to the device.

As an example of the arrangement method, the stirring blades of the present invention are most preferably arranged according to the following criteria.

Angle of No. 2 stirring blade: 180˚ rotation based on No. 1 stirring blade

Angle of 3rd stirring blade: 60˚ rotation based on 1st stirring blade

Angle of the 4th stirring blade: 240˚ rotation based on the 1st stirring blade

Angle of the 5th stirring blade: 120˚ rotation based on the 1st stirring blade

Angle of 6th stirring blade: 300˚ rotation based on 1st stirring blade

Meanwhile, the stirring blades 7 or more are arranged in the same manner as the above arrangement conditions. That is, the angle of the 7th stirring blade is arranged in 180˚ rotation based on the 1st stirring blade.

Meanwhile, the number of stirring blades as described above may vary depending on the processing capacity. When the processing capacity is small, it may be composed of 2 to 4 stirring blades, and when the processing capacity is increased, the number of stirring blades can be increased.

If the angle between adjacent stirring blades based on the rotation direction is less than 60°, food waste may clump and cause damage to the device. Conversely, if the angle between all adjacent stirring blades is more than 180°, overall stirring It is not preferable because the efficiency may be lowered.

Therefore, in the case of having a controlled arrangement structure as in the present invention, the overall stirring efficiency can be optimized without lumping food waste between adjacent stirring blades.

In addition, the width between adjacent stirring blades is preferably configured such that the width of the blade blade: the width between adjacent impellers = 1:1 to 1.3:1, as shown in FIG. 13.

When the ratio is less than 1: 1, when the width between adjacent stirring blades is longer than the width of the blade blade, a portion where stirring due to the blade does not occur occurs, and the stirring efficiency decreases. On the other hand, if it exceeds 1.3:1, even if a certain angle is formed between adjacent stirring blades, food waste and biologics may become lumped, which is not preferable. Therefore, it is preferable to adjust the width between the stirring blades to be within the above range.

In addition, in the case of the stirring blades adjacent to the side wall surface 12 of the food waste treatment machine, contact with the side wall surface 12 may occur and may be damaged, and thus must be disposed so as to be separated by an appropriate distance. It is preferable that the appropriate distance is formed in a length of 0.2 to 0.6 times the width between the stirring blades described above.

Meanwhile, in the present invention, the length of the stirring blade is appropriately adjusted.

When the blade 300 corresponding to the end of the stirring blade is disposed too close to the inner wall surface 11 of the food waste treatment machine, when the blade 300 is damaged due to thermal deformation, it contacts the inner wall surface 11 It can be, so it needs attention.

Specifically, in the operating method of the food waste treatment machine, when a microbial fermentation method or a drying method is used, heat of about 40 to 100° C. is applied to the microbial method, and in the case of the drying method, heat of 100° C. or higher is applied. Deformation such as thermal expansion of the stirring blade may occur by the same heat. Accordingly, the blade 200 may come into contact with the inner wall surface 11 of the food waste processor, and the device may be stopped or damaged due to such contact.

On the other hand, when the blade 200 part is disposed too far from the inner wall surface 11 of the food waste disposal machine, the food waste located close to the inner wall surface 11 among the food waste flowing into the processor cannot be effectively stirred, and As the biologic is attached to the wall, the stirring efficiency decreases. Therefore, it is required to properly adjust the length of the stirring blade considering both factors.

Accordingly, in the present invention, the device is manufactured to have a spacing of 5 to 20 mm between the blade 200 and the inner wall surface 11 of the food waste treatment machine.

If the spacing is less than 5mm, the device may be easily damaged due to thermal expansion, and if the spacing is wider than 20mm, the stirring efficiency may be degraded, which is not preferable.

Meanwhile, even if the interval is appropriately adjusted initially as described above, it may be necessary to readjust the interval as the device is deformed due to heat.

Accordingly, in the present invention, a plurality of polygonal grooves 210 are drilled at the end of the impeller 300 and assembled in such a manner that the blade coupling part is mounted on the groove 210, and the blade position is designed to be adjusted. The assembly process through the groove 210 is shown in FIG. 14.

If the assembly is possible in the same manner as described above, there is an advantage that the length of the entire stirring blade including the blade 300 and the impeller 200 can be easily adjusted without disassembling the food waste treatment device.

Since the groove 210 has a polygonal shape, it is possible to prevent the connection portion connected to the groove from rotating as the impeller and the blade rotate. In this case, it is assumed that any polygonal shape capable of preventing rotation of the connection portion is possible. For example, 3, 4, 5, 6, and octagonal shapes are preferable, and in particular, as shown in FIG. 14, a rectangular shape is preferable.

On the other hand, in addition to the above structural features, it is also possible to adjust the characteristics of the device parts.

Specifically, in the present invention, it is preferable to connect the connection flange 510 with a high strength steel bolt. In the case of using a high-tension steel bolt as described above, when an excessive load is applied, the bolt is first received by the load before the main equipment is damaged, so that damage of the main equipment can be prevented. In the above case, if only the damaged bolt is replaced, there is an advantage that the device can be reused.

In addition, in the present invention, it is preferable to use the bearing housing 500 in the form of an oilless bearing or a plummer block. In the case of the food waste treatment machine of the present invention, the load generated by the rotation of the motor 400 and the rotation of the stirring blade is concentrated on the bearing housing 500, and when a general ball bearing is used, there is a high possibility that it cannot withstand the load. Therefore, it is desirable to increase the resistance to load by using an oilless bearing or a plummer block-type bearing housing.

Hereinafter, specific examples are presented to aid in understanding the present invention. However, the following examples are provided for easier understanding of the present invention, and the contents of the present invention are not limited by the examples.

<Example 1>

In a food waste processor having a semicircular radius of 450 mm at the bottom of the stirring tank, a stirring blade including an impeller attached to the stirring shaft and extending in a vertical direction of the stirring shaft and a blade attached to the extended impeller end was installed.

The impeller is mounted to have an outer curved blade (a radius of curvature of 305 mm) in a forward rotation direction and an inner curved blade (a radius of curvature of 235 mm) in a reverse rotation direction, and the blade is a triangular blade in the forward rotation direction and an arc blade in the reverse rotation direction. It is designed to have a radius of curvature of 171mm.

The total length of the stirring blade including the impeller and the blade was 432.15 mm, and the width of the blade was designed to be 222 mm.

Meanwhile, the distance between the adjacent impellers is 207 mm, and the distance between the side wall of the food waste disposal machine and the adjacent impeller is designed to be 117 mm apart.

A total of 6 stirring blades were installed, and the arrangement of each stirring blade was arranged as follows.

Angle of No. 2 stirring blade: 180˚ rotation based on No. 1 stirring blade

Angle of 3rd stirring blade: 60˚ rotation based on 1st stirring blade

Angle of the 4th stirring blade: 240˚ rotation based on the 1st stirring blade

Angle of the 5th stirring blade: 120˚ rotation based on the 1st stirring blade

Angle of 6th stirring blade: 300˚ rotation based on 1st stirring blade

The food waste treatment device as described above was operated at a speed of 4 rpm so that the forward rotation: reverse rotation ratio was 7:1.

In the case of the food waste treatment machine as described above, even if 100 kg of food waste was continuously input and operated per day for 6 months, the device damage rate did not appear, and the treatment efficiency of the food waste was found to be 97% or more. In addition, there was no case of stopping the motor within 1 hour after putting food waste.

<Comparative Example 1>

In a food waste processor having a semicircular radius of 450 mm at the bottom of the stirring tank, a stirring blade including an impeller attached to the stirring shaft and extending in a vertical direction of the stirring shaft and a blade attached to the extended impeller end was installed.

The impeller was designed to have a cylindrical shape, and the blade was designed to form a square plane.

Adjacent impellers were configured to form 180°, and the total length of the stirring blade including the impeller and the blade was 430 mm, and the width of the blade was designed to be 220 mm.

Meanwhile, the distance between the adjacent impellers is 210 mm, and the distance between the side wall of the food waste processor and the adjacent impeller is designed to be 115 mm apart.

The food waste treatment machine as described above was operated by rotating it forward at a speed of 4.5 rpm.

In the case of the food waste treatment machine as described above, when 100 kg of food waste was added per day, the damage rate was 60% within 5 days, and the treatment efficiency of the food waste within 24 hours before damage was 85%. In addition, when driving 100 times, the motor stopped within 1 hour after the food waste was added at a frequency of 50 or more times.

Failure rate
(After 5 days of driving) Failure rate
(6 months after driving) Motor stop frequency
(After driving
Within 1hr) Food waste
Processing efficiency Example 1 0% 0% 0% 97% Comparative Example 1 60% 85% 50% 85%

As can be seen from the above embodiments, when using the food waste treatment apparatus of the present invention, it can be seen that the damage rate of the device decreases rapidly, and the stop rate of the motor also decreases, so that stable operation is possible. In addition, it can be seen that the agitation efficiency is also improved, so that the overall treatment efficiency of food waste is also greatly increased.

10: food treatment system
11: food waste treatment machine inner wall surface 12: food waste treatment machine side wall
100: stirring shaft
200: impeller 210: groove
200-a: right part impeller 200-b: left part impeller
300: blade
310: main blade 320: auxiliary blade 330: side blade
301: upper surface of the blade 302: lower surface of the blade
400: motor 450: chain
500: bearing housing 510: connection flange

Claims (7)

A motor that generates rotation;
A stirring shaft rotated according to the rotation of the motor;
An impeller attached to the stirring shaft and extending in a vertical direction of the stirring shaft and having an outer curved blade in a forward rotation direction and an inner curved blade in a reverse rotation direction; And
Including a blade attached to the extended impeller end, wherein the blade has a triangular blade in a forward rotation direction and an arc blade in a reverse rotation direction,
The number of forward rotation of the agitation shaft: a food waste processor that is driven in a range where the number of reverse rotations is 2: 1 to 20: 1
delete The method of claim 1,
In the case of the stirring blade formed by the combination of the impeller and the blade, the angle of the stirring blade No. 2 is 160 to 200 degrees based on No. 1, and the food waste treatment machine of claim 3 is arranged at an angle of 40 to 80 degrees based on No. 1.
The method of claim 1,
In the case of the stirring blade formed by the combination of the impeller and the blade, the stirring blade disposed 2nth is arranged to increase 40 to 80˚ than the stirring blade disposed 2(n-1), and the stirring blade disposed 2n+1 is Food waste treatment device, characterized in that the 2n-1 th is arranged to increase 40 to 80˚ than the stirring blade is arranged, 2≤n≤5.
The method of claim 1,
The agitation shaft is a food waste treatment device, characterized in that rotated at 1 to 10 rpm
The method of claim 1,
Blade blade width: food waste treatment device, characterized in that arranged so that the impeller interval is 1:1 to 1.3:1
The method of claim 1,
Food waste treatment device, characterized in that it has a spacing of 5 to 20 mm between the blade surface and the inner wall of the food waste treatment machine

Images