KR101972498B1 - Organic waste sludge composting apparatus with moisture sensing function - Google Patents

Abstract

The present invention relates to an organic waste composting apparatus having a moisture sensing function, wherein a permeation window for seeing the inside of the fermentation tank and a moisture sensor for sensing the moisture inside the fermentation tank are installed around the lower region of the fermentation tank, The rotational speed of the agitator, the intake amount of the intake blower, and the exhaust amount of the exhaust blower are variably controlled according to the magnitude of the moisture sensed by the exhaust fan.
According to the present invention, the operator can check the composting state of the organic waste mixture in the lower region of the fermentation tank through the permeation window in a timely manner and discharge the compost showing a suitable water content for use. The rotation speed of the stirrer, the intake amount of the intake blower, and the exhaust amount of the exhaust blower are variably controlled according to the amount of water in the fermenter, whereby the organic waste mixture in the fermenter is exhausted to the outside through the exhaust port in an over- It is possible to solve the conventional problems and the conventional problems of generating a fire due to the friction between the excessively dried organic waste mixture in the first lower region of the fermentation tank and the stirrer rotating at a fixed speed or the inner wall of the fermentation tank.

Description

[0001] The present invention relates to an organic waste composting apparatus with moisture sensing function,

The present invention relates to an organic waste recycling technology, and more particularly, to an organic waste composting apparatus having a moisture sensing function.

Organic waste composting system enables composting and recycling of organic wastes that can be recycled as compost or marine soil, such as food waste discharged from homes and restaurants, livestock manure discharged from livestock farms, and sewage sludge generated during daily sewage treatment.

For example, Patent Document 1 discloses a garbage disposal apparatus for composting organic wastes at a high temperature using Bacillus smithi.

Meanwhile, FIG. 1 is an embodiment for explaining the constitution of a conventional organic waste composting apparatus 100.

1, a conventional organic waste composting apparatus 100 includes a fermenter 110, a stirrer 120, a stirring actuator 130, an intake fan 140, an exhaust blower 150, and a controller 160 .

The fermentation tank 110 is filled with organic waste and an organic waste mixture produced by mixing the aerobic bacterial culture medium for promoting aerobic fermentation of the organic waste and the aerobic bacteria preparation and fermenting.

As the aerobic bacterium, it is preferable to use aerobic bacterium. The aerobic bacterium culture medium is a kind of polysaccharide component constituting plant cell wall. It may be a rice husk or sawdust containing cellulose used as food for aerobic Bacillus bacteria Is preferably used.

The agitator 120 stirs the organic waste mixture charged in the fermentation tank 110 with the air by bringing the horizontal stirring blades 122 into contact with the air.

The stirrer 120 includes a hollow rotary shaft 121 rotatably installed in a central portion of the fermenter 110 and a plurality of horizontal stirring blades 122 formed in a zigzag structure along the longitudinal direction of the rotary shaft 121 ).

The rotation shaft 121 rotates in a forward or reverse direction in a horizontal direction by a motor included in the stirring actuator 130.

The horizontal stirring blades 122 rotate together with the rotating shaft 121 to stir the organic waste mixture

The horizontal stirring rotary blade 122 discharges air through an air nozzle 122a communicating with the hollow rotary shaft 121 to bring the organic waste mixture contained in the fermentation vessel 110 into contact with air.

The stirring actuator 130 rotates the stirrer 120 at a predetermined speed.

The intake air blower 140 supplies air having a fixed intake amount into the fermenter 110 through the agitator 120.

The intake air blower 140 supplies air into the fermentation tank 110 via the hollow rotation shaft 121 and the air nozzle 122a of the horizontal stirring blades 122.

The exhaust blower 150 discharges the air inside the fermenter 110 with a fixed amount of exhaust to the outside.

The exhaust blower 150 is connected to the exhaust port 113 of the fermenter 110 through a connection pipe.

The controller 160 rotates the stirrer 120 at a fixed speed by an operator and drives the intake fan 140 to supply the air having an intake amount fixed by the operator to the inside of the fermenter 110, The exhaust blower 150 is driven to discharge the air inside the fermenter 110 having a fixed displacement.

The conventional organic waste composting apparatus 100 constructed as above operates as follows.

The operator puts the organic waste mixture prepared in advance through the inlet 111 of the fermentation tank 110 to fully charge the organic waste mixture to the maximum filling height H in the fermentation tank 110.

Typically, the organic waste mixture that is charged into the fermentation tank 110 to be composted and recycled exhibits a water content of about (65 ± 2)%.

After the organic waste mixture is fully charged in the fermentation tank 110 as described above, the operator operates the controller 160 to operate the stirrer 120, the intake fan 140, and the exhaust fan 150.

At this time, the horizontal stirring blades 122 rotate in the fermenter 110 and supply air through the air nozzles 122a of the horizontal stirring blades 122.

As such, when the organic waste mixture charged in the fermentation tank 110 is brought into contact with air and stirred at the same time, aerobic fermentation by aerobic bacteria is promoted, and the organic waste mixture is composted.

Also, during the composting of the organic waste mixture as described above, composting is performed while stirring horizontally in a first lower region (the hatched line in FIG. 1) defined from the bottom surface of the fermentation tank 110 to a predetermined height h If the organic waste mixture exhibits a compost water content suitable for use as compost (e.g., a water content in the range of <15 ± 2%), the operator may dispense an appropriate amount of compost into the outlet 112 formed in the bottom surface of the fermenter 110 Lt; / RTI >

While the organic waste mixture is being composted in the fermentation tank 110, the controller 160 rotates the stirrer 120 at a fixed speed by an operator and sends air having an intake amount fixed by the operator to the fermentation tank 110, And drives the exhaust blower 150 to discharge the air inside the fermenter 110 having a fixed amount of exhaust by the operator to the outside.

In addition, when the organic waste mixture in the first lower region of the fermentation tank 110 is composted and discharged, the worker replenishes the organic waste mixture into the fermentation tank 110 and completely replenishes the organic waste mixture to the maximum filling height H And the process of composting the organic waste mixture as described above is repeated.

The conventional organic waste composting apparatus 100 operating as described above has the following problems.

Generally, while the aerobic fermentation of the organic waste mixture proceeds in the fermentation tank 110, the intake air blower 140 supplies warm air of about 40 to 60 ° C into the fermentation tank 110 to bring the organic waste mixture into contact with air , So that the temperature inside the fermenter (110) maintains a temperature range of about (70 ± 5) ° C due to aerobic fermentation.

The temperature of the inside of the fermentation tank 110 is maintained at a temperature range of about (70 ± 5) ° C. and the controller 160 rotates the stirrer 120 at a fixed speed by an operator, In an environment where the intake air blower 140 is driven at an intake amount and the exhaust blower 150 is driven at a fixed amount of displacement by a worker, the operator may change the amount of the organic waste mixture The composting efficiency of the organic waste mixture in the first lower region of the fermentation tank 110 suitable for use as a compost (e.g., < 15 ± 2% Water content).

In such a judgment process, a situation occurs in which the operator can not confirm the composting completion state of the organic waste mixture in the first lower region of the fermentation tank 110 in a timely manner.

If the operator judges that the composting completion of the organic waste mixture is faster than the case, there is a problem that the organic waste mixture having a high water content is discharged to the outside from the first lower region of the fermentation tank 110 to a degree unsuitable for composting.

Alternatively, if the operator judges that the composting completion state of the organic waste mixture is slower than the appropriate time, the organic waste mixture in the fermentation tank 110 is discharged in the form of dust through the exhaust port 123 in an over- The organic waste mixture that is excessively dried in the first lower region of the fermentation tank 110 may generate a fire due to friction with the stirrer 120 rotating at a fixed speed or the inner wall of the fermentation tank 110.

KR 10-2005-0094769 A

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a fermentation apparatus, A sensor is installed and a controller is provided with an organic waste composting apparatus having a moisture sensing function for variably controlling the rotational speed of the stirrer, the intake amount of the intake blower, and the exhaust amount of the exhaust blower in accordance with the magnitude of water sensed by the moisture sensor .

In order to accomplish the object of the present invention as described above, the apparatus for composting organic wastes having a moisture sensing function according to the present invention comprises organic waste, a medium for aerobic bacteria for promoting aerobic fermentation of the organic waste, A fermentation tank for filling and fermenting the organic waste mixture produced by mixing; A permeate window formed in a first lower region defined from a bottom surface of the fermenter to a predetermined height h1 to allow an external worker to confirm the composting state of the organic waste mixture in the first lower region; A moisture sensor installed in a second lower region which is higher than the first lower region of the fermenter by a predetermined height h2 to sense moisture of the organic waste mixture in the second lower region; An agitator for agitating and stirring the organic waste mixture charged in the fermentation tank with a rotary blade for horizontal agitation; A stirrer for varying the rotational speed of the stirrer to rotate the stirrer; An intake air blower for variably controlling air supplied into the fermenter through the stirrer; An exhaust blower for variably controlling the air in the fermenter to the outside and discharging the air; And a controller for variably controlling the rotational speed of the agitator according to the magnitude of the moisture of the organic waste mixture sensed by the moisture sensor, variably controlling the intake air amount of the intake fan, and varying the exhaust amount of the exhaust blower .

In the organic waste composting apparatus having a moisture sensing function according to the present invention, when the water content of the organic waste mixture sensed by the moisture sensor indicates a moisture content for composting, composting of a predetermined amount of automatic discharge is performed on the bottom of the fermentation tank And then discharged through a discharge port formed in the surface.

In the apparatus for composting organic wastes having a moisture sensing function according to the present invention, the controller may control the amount of moisture of the organic waste mixture sensed by the moisture sensor to a first predetermined first rotation speed The stirrer is rotated to drive the intake fan so as to simultaneously supply the air of the first predetermined amount of intake to the inside of the fermenter, and to drive the exhaust blower to discharge the air inside the fermenter of the first predetermined amount of the first exhaust to the outside .

In the organic waste composting apparatus having a moisture sensing function according to the present invention, when the moisture content of the organic waste mixture sensed by the moisture sensor is less than a water content for preventing dust and fire, The second blower is rotated at a second rotation speed to simultaneously drive the air blower so as to supply air having a second intake amount smaller than the first intake amount to the inside of the fermenter, And the exhaust fan is driven so as to discharge the air inside the fermenter.

In an organic waste composting apparatus having a moisture sensing function according to the present invention, dust collected from a mixture of organic waste contained in the exhaust gas is collected and stored between the fermentation tank and the exhaust blower, And a cyclone dust collector.

According to the present invention, the operator can easily check the composting state of the organic waste mixture in the lower region of the fermentation tank through the permeation window in a timely manner and discharge the compost which has a water content suitable for use. The rotational speed of the stirrer, the intake amount of the intake blower, and the exhaust amount of the exhaust blower are variably controlled according to the amount of water in the fermenter to be detected, so that the organic waste mixture in the fermenter is dried in an over- It is possible to prevent or reduce the conventional problems of fire caused by the friction between the agitator rotating at a fixed speed or the inner wall of the fermentation tank in the first lower region of the fermentation tank and the excessively dried organic waste mixture in the first lower region of the fermentation tank have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view illustrating a configuration of a conventional organic waste composting apparatus. FIG.
FIG. 2 shows an embodiment of a conventional organic waste composting apparatus and an agitator for use in an organic waste composting apparatus having a moisture sensing function according to the present invention.
3 is a view for explaining a constitution of an organic waste composting apparatus having a moisture sensing function according to the present invention.
FIG. 4 is a view for explaining a constitution of an organic waste composting apparatus having a moisture sensing function according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 to 3, an organic waste composting apparatus 100 'having a moisture sensing function according to the present invention includes a fermentation tank 110', a permeation window 110a, a moisture sensor 110b, a stirrer 120 ' , A stirring actuator 130 ', an intake blower 140', an exhaust blower 150 ', and a controller 160'.

The fermentation tank 110 'is filled with an organic waste and an organic waste mixture produced by mixing the aerobic bacterial culture medium for promoting aerobic fermentation of the organic waste and the aerobic bacteria preparation and fermenting the mixture.

As the aerobic bacterium, it is preferable to use aerobic bacterium. The aerobic bacterium culture medium is a kind of polysaccharide component constituting plant cell wall. It may be a rice husk or sawdust containing cellulose used as food for aerobic Bacillus bacteria Is preferably used.

The permeation window 110a is formed in a first lower region defined from the bottom surface of the fermentation tank 110 'to a predetermined height h1 so that an external worker can compose the composting state of the organic waste mixture in the first lower region Have them identify with the naked eye.

The moisture sensor 110b is installed in a second lower region which is higher than the first lower region of the fermentation tank 110 'by a predetermined height h2 to sense the moisture of the organic waste mixture in the second lower region .

The stirrer 120 'stirs the organic waste mixture charged in the fermentation tank 110' with air by bringing it into rotation with the horizontal stirring blades 122 '.

The stirrer 120 'is provided with a hollow rotary shaft 121' rotatably installed at a central portion of the fermenter 110 'and a plurality of horizontal stirring rollers 121' formed in a zigzag structure along the longitudinal direction of the rotary shaft 121 ' Thereby forming a rotating blade 122 '.

The rotation shaft 121 'rotates in the forward or reverse direction in the horizontal direction by the motor included in the stirring actuator 130'.

The horizontal stirring blades 122 'rotate together with the rotating shaft 121' to stir the organic waste mixture

The horizontal stirring rotary blade 122 'discharges air through an air nozzle 122a' communicating with the hollow rotary shaft 121 'to contact the organic waste mixture contained in the fermenter 110' .

The stirring actuator 130 'adjusts the rotation speed of the stirrer 120' to rotate the stirrer 120 '.

The intake air blower 140 'adjustably supplies air to the inside of the fermenter 110' through the stirrer 120 '.

The intake air blower 140 'supplies air into the fermenter 110' via the hollow rotary shaft 121 'and the air nozzle 122a' of the horizontal stirring rotary blade 122 '.

The exhaust air blower 150 'adjusts the air in the fermenter 110' to the outside and discharges it.

The exhaust blower 150 'is connected to the exhaust port 113' of the fermenter 110 'through a connection pipe.

The controller 160 'adjusts the rotational speed of the stirrer 120' according to the magnitude of the moisture of the organic waste mixture sensed by the moisture sensor 110b and adjusts the intake quantity of the intake fan 140 ' And the exhaust amount of the exhaust blower 150 'is variably controlled.

When the water content of the organic waste mixture sensed by the moisture sensor 110b indicates the water content for composting, the controller 160 'compares a predetermined amount of compost with an automatic discharge amount to the discharge port 112' formed on the bottom surface of the fermentation tank 110 ' ').

The operator can operate the operation panel (not shown) of the controller 160 'to set the moisture content for compost according to the water content of the organic waste mixture to be fed into the fermentation tank 110'.

For example, if the organic waste mixture to be charged to the fermentation tank 110 exhibits a water content of about (65 ± 2)%, setting the moisture content for the compost to be in the range of <15 ± 2% It is suitable to be discharged as compost.

The controller 160 'rotates the stirrer 120' at a first predetermined first rotation speed until the water content of the organic waste mixture sensed by the moisture sensor 110b reaches a moisture content for preventing dust and fire, To drive the intake fan 140 'so as to supply the air having the first predetermined amount of intake to the inside of the fermentation tank 110', and to discharge the air inside the fermentation tank 110 ' Drives the blower 150 '.

The operator can operate the operation panel (not shown) of the controller 160 'to vary the moisture content for preventing dust and fire according to the water content of the organic waste mixture put into the fermentation tank 110'.

For example, if the organic waste mixture to be charged into the fermentation tank 110 exhibits a water content of about (65 ± 2)%, the moisture content for dust and fire prevention is preferably set to a water content in the range of <35 ± 5%.

If the water content of the organic waste mixture sensed by the moisture sensor 110b is less than the water content for prevention of dust and fire, the controller 160 'controls the agitator 120' at a second rotational speed predetermined to be slower than the first rotational speed. , And simultaneously drives the intake fan (140 ') to supply air of a second intake amount, which is less than the first intake amount, to the inside of the fermentation tank (110'), And drives the exhaust blower 150 'to discharge the air inside the fermenter 110' in the second displacement to the outside.

Referring to FIG. 4, an organic waste composting apparatus 100 'having a moisture sensing function according to the present invention is installed between the fermentation tank 110' and the exhaust blower 150 ' And a cyclone dust collector 170 for collecting and storing dust of the organic waste mixture and re-introducing it into the fermentation tank 110 '.

If the air inside the fermentation tank 110 'is discharged to the outside via the cyclone dust collector 170, the dust of the organic waste mixture can be reduced to the outside, and the composting use rate of the organic waste mixture can be increased .

The organic waste composting apparatus 100 'having the moisture sensing function according to the present invention constructed as above operates as follows.

The operator puts the organic waste mixture prepared in advance through the inlet 111 'of the fermentation tank 110' to fully charge the organic waste mixture to the maximum filling height H in the fermentation tank 110 '.

Typically, the organic waste mixture that is charged into the fermentation tank 110 'to be composted and recycled exhibits a water content of about (65 ± 2)%.

After the organic waste mixture is fully charged in the fermentation tank 110 'as described above, the operator operates the controller 160' so that the stirrer 120 ', the intake fan 140', and the exhaust fan 150 ' It works.

At this time, the controller 160 'rotates the stirrer 120' at the first predetermined first rotation speed and simultaneously supplies the air of the first predetermined amount of intake to the inside of the fermenter 110 ' 140 'and drives the exhaust blower 150' so as to discharge the air inside the fermenter 110 'of the first predetermined amount of the first exhaust to the outside.

Accordingly, the horizontal stirring blades 122 'rotate in the fermenter 110' to supply air through the air nozzles 122a 'of the horizontal stirring blades 122'.

As such, when the organic waste mixture charged in the fermentation tank 110 'is brought into contact with air and stirred at the same time, aerobic fermentation by aerobic bacteria is promoted and the organic waste mixture is composted.

During composting of the organic waste mixture as described above, composting is performed while stirring horizontally in a first lower region (the hatched line in FIG. 1) defined from the bottom of the fermentation tank 110 'to a predetermined height h1 If the organic waste mixture exhibits a compost water content suitable for use as a compost (e.g., a water content in the range of <15 ± 2%), the controller 160'causes composting of the predetermined amount of automatic emissions to the fermentation tank 110 ' Through a discharge port 112 'formed in the bottom surface of the casing.

In addition, when the organic waste mixture in the first lower region of the fermentation tank 110 'is composted and discharged, the operator replenishes the organic waste mixture into the fermentation tank 110' to reach the maximum filling height H And the process of composting the organic waste mixture as described above is repeated.

Meanwhile, while the organic waste mixture is composted in the fermentation tank 110 'as described above, the worker can collect the organic waste mixture from the first lower portion of the fermentation tank 110' through the permeation window 110a installed in the first lower region of the fermentation tank 110 ' The composting state of the organic waste mixture in the area can be easily checked at a reasonable time and the compost can be discharged showing a water content suitable for use.

Particularly, while the organic waste mixture is composted in the fermentation tank 110 'as described above, the controller 160' controls the moisture content of the organic waste mixture sensed by the moisture sensor 110b to be lower than the above- The stirrer 120 'is rotated at the first first rotation speed until the water content reaches a water content (for example, a water content in the range of <35 ± 5%), and at the same time, And drives the exhaust fan 150 'to drive the intake fan 140' to supply the inside of the fermenter 110 'of the first first amount of exhaust to the outside.

Thereafter, if the moisture of the organic waste mixture sensed by the moisture sensor 110b is detected to be less than the dust and fire resistant water content (e.g., <35 ± 5% moisture content), the controller 160 ' Rotates the stirrer 120 'at a second rotational speed predetermined to be slower than the first rotational speed and at the same time supplies air with a second intake amount that is less than the first intake amount to the inside of the fermentor 110' , Drives the intake fan (140 ') to drive the exhaust blower (150') so as to discharge the air inside the fermenter (110 ') of the second exhaust amount that is less than the first exhaust amount.

In this way, the controller 160 'controls the rotating speed of the stirrer 120', the intake amount of the intake fan 140 ', and the amount of the air blown from the exhaust blower 140' according to the magnitude of the moisture in the fermenter 110 'sensed by the moisture sensor 110b The organic waste mixture in the conventional fermentation tank 110 is discharged to the outside in the form of dust through the exhaust port 113 in an excessively dried state, In the first lower region of a conventional fermentation tank 110, an excessively dried organic waste mixture rotates at a fixed speed, or a conventional stirrer 140 or a conventional fermentation tank 110 generates a fire by friction with the inner wall All the conventional problems can be prevented or alleviated.

The organic waste composting apparatus having the moisture sensing function according to the present invention is not limited to the above-described embodiments, and various modifications and changes may be made without departing from the scope of the present invention as claimed in the following claims There is a technical spirit to the extent that anyone with ordinary knowledge can make various changes.

100,100 ': Organic waste composting unit 110,110': Fermenter
111, 111 ': inlet 112, 112': outlet
113, 113 ': exhaust port 110a: transparent window
110b: Moisture sensor 120, 120 ': stirrer
121, 121 ': rotation axis 122, 122'
122a, 122a ': air nozzle 130, 130': stirring actuator
140, 140 ': intake blower 150, 150': exhaust blower
160,160 ': Controller

Claims (5)

A fermentation tank 110 'for filling and fermenting an organic waste mixture, an aerobic bacterial culture medium for promoting aerobic fermentation of the organic waste, and an organic waste mixture produced by mixing the aerobic bacterial preparation;
Is formed in a first lower region defined from a bottom surface of the fermenter (110 ') to a predetermined height (h1) to allow an external operator to confirm the composting state of the organic waste mixture in the first lower region );
A moisture sensor (110b) installed in a second lower area higher than the first lower area of the fermentation tank (110 ') by a predetermined height (h2) and sensing moisture of the organic waste mixture in the second lower area;
An agitator 120 'for agitating and stirring the organic waste mixture charged in the fermentation tank 110' with air by a horizontal stirring blade 122 ';
A stirring actuator 130 'that adjusts the rotation speed of the stirrer 120' to rotate the stirrer 120 ';
An intake fan 140 'that adjusts and supplies air into the fermenter 110' through the stirrer 120 ';
An exhaust blower 150 'that adjustably discharges the air in the fermenter 110' to the outside; And
The rotational speed of the agitator 120 'is variably controlled in accordance with the amount of moisture of the organic waste mixture sensed by the moisture sensor 110b, the intake air amount of the intake blower 140' ) Is controlled by varying the displacement of the stirrer 120 'at the first predetermined first rotation speed until the water content of the organic waste mixture sensed by the moisture sensor 110b becomes a moisture content for prevention of dust and fire And simultaneously drives the intake fan 140 'to supply the air of the first predetermined amount of intake to the inside of the fermentation tank 110', and to discharge the air inside the fermentation tank 110 'of the first amount of the first predetermined amount of exhaust to the outside If the water content of the organic waste mixture sensed by the water sensor 110b is less than the water content for preventing dust and fire, the exhaust blower 150 ' (140 ') to rotate the stirrer (120') at a second predetermined rotational speed and simultaneously supply air of a second intake amount, which is less than the first intake amount, to the inside of the fermentation tank (110 ' A controller 160 'for driving the exhaust blower 150' so as to discharge the air inside the fermenter 110 'having a second displacement which is smaller than the first displacement and is a second displacement amount;
Wherein the organic waste composting apparatus comprises: The method according to claim 1, wherein the controller (160 ') compares the moisture content of the organic waste mixture detected by the moisture sensor (110b) with the moisture content of the compost, And discharging the organic waste through an outlet (112 ') formed on the surface of the organic waste compost. The method according to claim 1, further comprising the steps of: collecting and storing dust of the organic waste mixture contained in the exhaust, being installed between the fermentation tank (110 ') and the exhaust blower (150' And a cyclone dust collector (170) for collecting the organic waste. delete delete

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