KR20060085397A - Wet waste drying maching - Google Patents

Abstract

The present invention relates to a waste drying treatment apparatus for drying the sludge generated during food waste or wastewater treatment process, and in detail, a rotating cylinder is installed inside the fixed cylinder, and inner and outer screws are formed on the inner and outer surfaces thereof in different directions. The wet waste introduced into the outer side of the rotating cylinder is transferred to the outer side of the rotating cylinder by the external screw, and then is dropped into the rotating cylinder at the end and continuously transferred by the inner screw to the hot air provided at one end of the rotating cylinder. It relates to a waste drying apparatus which is discharged in a dry state by being contacted and steam is discharged to the outside of the fixed cylinder.

Food waste, dryer

Description

Waste Drying Processing Equipment {WET WASTE DRYING MACHING}             

1 is a block diagram of a waste drying apparatus according to the present invention

Figure 2 is a cross-sectional view of the A-A section of Figure 1 for showing an embodiment of the dropping port

Figure 3 is an embodiment using a long length rotating cylinder

4 and 5 is a structural diagram applied to the internal connection passage

Figure 6 is an embodiment of the rotation induction plate and anti-sticking device

Figure 7a is an operating state diagram of the rotating induction plate according to the present invention

Figure 7b is a state diagram of the movement of the dried object in the conventional spiral screw structure

8 is an embodiment configured to configure the food waste drying system by applying the present invention

Explanation of major marks

10.Fixed cylinder 11.Inlet 12.Frame

20.Rotating cylinder 21.Roll bearing 22.External screw

23.Internal screw 24.Fall 25.Induction plate

26.Exhaust port 27.Plate 28.Connection passage

50. Steam Discharge Device 60. Hot Air Device 70. Discharge Device

80.Rotating guide plate 90.Adhesion prevention device

The present invention relates to a waste drying treatment apparatus for drying the sludge generated during food waste or wastewater treatment process, and in detail, a rotating cylinder is installed inside the fixed cylinder, and inner and outer screws are formed on the inner and outer surfaces thereof in different directions. To be transported to the outside of the rotating cylinder by the external screw, and then to the inside of the rotating cylinder at the end of the to-be-dried cylinder, and continuously transferred by the inner screw to the hot air provided at one end of the rotating cylinder. It relates to a waste drying apparatus which is discharged in a dry state by being contacted and steam is discharged to the outside of the fixed cylinder.

Treatment facilities such as food waste reprocessing to feed or sludge generated from waste water treatment process can remove the water contained in these treatments and can carry out the next process or reduce the cost of incineration.

For this purpose, a drying treatment of various food wastes or by-products generated during wastewater treatment is required, and various types of drying treatment apparatuses are used for this purpose.

Among them, the drying apparatus proposed by Utility Model Publication 1997-0005014 was re-arranged to the tip of the inner cylinder and the inner cylinder so that the intermediate cylinder and the inner cylinder were rotated in opposite directions by sequentially combining the inner cylinder with the fixed outer cylinder having a different length and inner diameter. The chain gear is interlocked with the drive motor and the chain, and each burner is attached to the reburning pipe which is welded to the rear end of the inner cylinder and the upper end side of the fixed outer cylinder and the one end is spirally wound on the outer circumference of the fixed outer cylinder. At the same time, the outer circumference of the intermediate cylinder and the inner cylinder is transported and stirred in the right direction from the transfer part by the agitator blade plate inclinedly attached to the left and right screws of a rod supported by a plurality of supports at an interval. In addition, waste material dropped from the dropping hole is transferred to the left side by the transfer part and stirred. Waste material flowing into the central conveying part from the dropping port of the barrel is conveyed and stirred in the direction of the discharge port by a plurality of stirring pieces protruding between the screw and the blade of the upper screw disposed on the inner circumferential wall and dried in a reduced state. It is composed of one configuration.

It is designed to complete drying during the process of passing through the drying apparatus by using the intermediate cylinder, the inner cylinder, which is a long-length cylindrical shaft, and being configured to be continuously transported by screws to increase the thermal contact movement distance. The processing capacity is relatively high and the drying efficiency is high. It was an advantage.

However, the structure has a limitation in the application of the continuous operation method by the continuous input and discharge of the trash is applied to the wet trash put into the heated hot plate, flipped over, crushed and discharged. That is, the stirring wing plate structure in which the screws formed on the outer surface of the intermediate cylinder and the inner cylinder are obliquely spaced at regular intervals on the left and right screws of the rod supported by the plurality of supports can be continuously moved by the screws while keeping the order. It is not a structure that is configured so that it is a structure to stir the input waste and stir, and the generated steam is discharged through the free space. Therefore, in the outside of the intermediate cylinder and the inner cylinder, the entire process of the input of the wet garbage, the internal movement and the discharge is sequentially performed, and thus the processing efficiency is lowered because the previously input and later the input waste are mixed and transported together without being discharged after drying. And energy consumption is high, and it may be discharged in a dry state during continuous operation by continuous input and discharge, and some of them are not transported and remain in the bottom of the fixed cylinder and the intermediate cylinder, so they are discharged even after the end of operation. In order to make the intermediate barrel and the inner barrel continuously rotated or removed from the outside had the disadvantage.

In addition, the screw of the structure with the stirring blade plate attached to the spirally wound rod at regular intervals is applied to the joints and corners of each element, the residue is continuously piled up and sticking and fixed to remove it periodically after disassembly of the cylinder Cleaning should be done, and the drop hole formed at the end of the screw is simply a hole-shaped structure, and the garbage collected to one side by the screw action could not be immediately moved from the outside of the barrel to the inside of the barrel, so that it was not effectively dried.

In addition, the wet waste heated by the burner's heat and reburning pipe is accelerated by the smooth discharge of the steam, but in the above structure, the steam and the input waste are mixed with each other, and the new waste is absorbed by the newly introduced waste, so that the discharge of the steam is not high. There was a disadvantage.

As a result, the above-described drying device has a structure in which the above-described structure can be discharged one by one by putting the waste that can be treated once and then mixed with each other by mixing the waste introduced by the rotation of the intermediate and inner cylinders and gradually moving the waste inside. The method is suitable, and is inadequate for the operation of the continuous input and the continuous discharge method, and there is a problem of lowering the efficiency of the drying treatment.

On the other hand, when the screw located in the space between the external fixed cylinder and the internal rotary cylinder is inserted with almost no play, at first, the volume of the object to be dried is transported in a state filled with several crews, drawing a trajectory like a spiral of the screw. As the volume is reduced by drying, it is transported in a state filled with only a part between the wings due to the characteristics of the low speed rotation. From then on, as shown in FIG. 7B, the external fixing cylinder is rotated at about 180 ° to 270 ° when rotated clockwise. The transport distance of the building is significantly shortened by being transported almost in a linear motion on the wall surface of the wall, and the heat efficiency is lowered and the drying time is long because only a part of contact heat is used. As a result, the dryer consists of a double triple rotating cylinder structure to increase the thermal contact time by increasing the low speed rotation or increase the transfer distance, thereby increasing the drying volume and improving the drying capacity. there was.

The present invention improves the efficiency of the drying treatment by improving the above-mentioned problems presented in the utility model publication 1997-0005014 to achieve continuous input and discharge, and to achieve the required degree of drying by one sequential passing process. In other words, it is designed for efficient waste disposal by a series of continuous processes.

To this end, the present invention is provided with a rotating cylinder that rotates in the fixed cylinder, a screw is formed on the outside of the rotating cylinder, the end of the rotating cylinder in which the screw ends is formed with a dropping hole penetrating into and out of the rotating cylinder, The guide plate is formed at the edge of the dropping port so that the waste conveyed to the outer end of the rotating cylinder is forcibly introduced into the rotating cylinder, and the inner screw having the opposite direction to the outer screw is installed inside the rotating cylinder, and the introduced waste is in the rotating cylinder. Is transported to the opposite side from the external screw and discharged through the discharge port formed at the transfer end, and the hot air device is installed at the opening of the rotary cylinder located at the final discharge port, and hot air is applied to the inside of the rotating cylinder. Through the hot air flowing out of the fixed cylinder through the drying process Present a drying apparatus configured to be built.

In addition, the present invention is to install a rotation guide plate at a predetermined interval on the direction of the blade of the outer screw formed in the rotating cylinder to make the spiral contact movement of the object to be made continuously and the steam generated during the drying process is the rotary induction plate and The present invention proposes a drying apparatus which is configured to be discharged through the space between the blades in the opposite direction of the screw to improve the thermal efficiency, improve the drying capacity, and reduce the total volume of the dryer.                         

In addition, the present invention is drying of the structure in which the garbage stuck prevention device of the structure in which the chain is installed at regular intervals on the inner and outer screws and the inner diaphragm of the rotating cylinder in order to prevent the waste put into the corners of the screw accumulate and fixed. Present the device.

In addition, the present invention is formed by the support is formed on the outer rim of the rotating cylinder at regular intervals so that a large amount of garbage can be dried in one operation by the use of the rotating cylinder by the pole rod, the drive device is configured to be connected to the efficient power It is characterized in that the transmission is made, the connection passage is connected to the inside of the rotating cylinder so that the discharge of steam and the transfer of waste from the outside of the rotating cylinder is made continuously.

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

Figure 1 shows the basic structure of the present invention, the present invention is a fixed cylinder 10 fixed to the floor, a rotating cylinder 20 is installed to rotate through the fixed cylinder, and a drive device for driving the rotating cylinder 30, a dry waste discharging device 40 for discharging the dried waste to the outside of the fixed cylinder, and a steam discharge device 50 attached to the fixed cylinder 10 for discharging steam generated in the cylinder; , The hot air device 60 is installed to the end of the rotating cylinder to apply hot air into the cylinder.

The fixed cylinder 10 has a structure in which an inlet 11 is formed at an upper end thereof, and a frame 12 for fixing a floor is installed at a lower portion thereof. The illustrated embodiment shows a structure using a single tube processed into a cylindrical shape or can be configured by connecting a plurality of pipes using a flange, etc., it can form a thermal insulation layer on the outside for thermal insulation.

Rotating cylinder 20 is a cylinder that rotates in the fixed cylinder, the outer diameter is in the range of 50 ~ 90% of the fixed cylinder inner diameter, both ends are configured to be supported by the roller bearing 21 through both ends of the fixed cylinder. do. In addition, inner and outer screws 22 and 23 having different directions are formed on the inner and outer surfaces of the rotating cylinder, and a plurality of dropping holes 24 penetrating into the rotating cylinder are formed at the ends of the outer screw. A guide plate 25 protruding in the rotational direction of the rotating cylinder is formed at the longitudinal side of each dropping port, and an outlet 26 is formed at the end of the inner screw of the rotating cylinder.

The outer screw 22 is formed on the rotating cylinder to be in contact with the inner wall of the fixed cylinder with almost no play, so that the waste introduced through the inlet 11 is forced to the terminal by the screw while the thermal contact is made to dry, the termination proceeds, It enters the inside of the rotating cylinder through the dropping hole formed in the part. At this time, the guide plate 25 formed on the longitudinal side of the drop opening, as shown in Figure 2, by the operation of the garbage transported by the rotation of the rotating cylinder to the inside of the rotating cylinder to achieve a smooth transfer from the outside of the rotating cylinder to the inside Act to lose.

The inner screw 23 serves to discharge the waste introduced through the dropping hole into the cylinder to be discharged through the final discharge port 26, and the inner screw is formed at regular intervals across the space between the wings of the inner screw. The partition 27 has a structure formed.

The diaphragm acts to increase the thermal contact area by drawing up the waste transported by the inner screw to the upper part of the cylinder, and drops it from the upper part of the cylinder to disperse and separate the grains to be dried and spread in space. To transfer heat to the front and inside of the grain to be dried to promote drying.

The driving device 30 may be configured in various ways to allow stable operation at a speed of about 60 RPM as a device for rotating the rotating cylinder in the fixed cylinder.

In the illustrated embodiment, both ends of the rotating cylinder are supported by the roll bearings 21 to form chain gears 31 around the ends, and the chains 32 are hooked to the reduction motor 33. As shown in the figure, a driving device connected by a chain gear and a gear element formed in a cylindrical shape can be applied, and can form a protruding frame around the cylinder and transmit the driving force by a wheel frictionally contacting the frame.

The drive device may be configured to apply power to only one side of the rotating cylinder when the length of the rotating cylinder is short, and may be installed at both ends in order to reduce the load when the length is long.

In addition, the above-mentioned driving apparatus can be formed at both ends and the middle part, and by doing so, it is possible to efficiently drive a drying apparatus of several tens of meters.

Figure 3 is to separate the fixed cylinder to install a continuous rotating cylinder penetrating through each fixed cylinder 10, 10 'so that the inner rotating cylinder is exposed, both ends of the rotating cylinder and the separating portion of the fixed cylinder roll bearing ( 21 illustrates a structure in which the driving device 30 is coupled in a state of being supported by 21.

In the above structure, since the inner screw 23 of the rotating cylinder is continuous, the outer screw 22 is disconnected, and thus the continuous transport of the input waste by the outer screw is not performed. In order to solve this problem, as shown in Figs. 4 and 5, the connection passage 28 is installed inside the rotating cylinder so that the waste conveyance by the external screw can be continuously performed. The connecting passages each have grooves 28a and 28b at the end of the outer screw 22 belonging to the fixed cylinder on one side and the start end of the outer screw belonging to the other fixed cylinder, respectively, and the grooves and grooves are connected to the pipe 28c. It is a structure connected by.

The connecting passage naturally flows through the groove 28a formed at the end of the outer screw to flow through the inner wall of the fixed cylinder to the other fixed cylinder without disturbing the transfer in the rotating cylinder by the inner screw. Delivered. When the guide plate 28d is installed at the inlet side of the inlet groove 28a, the guide plate embeds the object and pulls it up to the upper end of the cylinder. By falling to the more smoothly the transfer is made.

The steam discharge device 50 is a device for discharging the steam flowing out through the screw to the outside is configured to be forced discharged by the fan.

The hot air device 60 is a device for providing the heat required for drying the dried object, and a hot air method using a direct heat or a hot wire coil by a burner may be applied. The hot air device 60 is installed at the outlet side end of the rotating cylinder to apply hot air. do.

In addition to the hot air device, a rotating cylinder and a screw attached thereto may be configured to have a double space to form a space therein, and an auxiliary heat supply device for applying steam to the space may be applied.

The discharge device may be implemented in various structures as a device for discharging and transporting the dry waste discharged through the discharge port 26 of the rotating cylinder, the illustrated structure shows a discharge device forcibly discharged by a screw.

In the drying apparatus according to the above structure, hot air is applied by a hot air device, and when the internal rotary cylinder and the fixed cylinder are preheated to some extent, food waste or sludge, which is pre-crushed to an appropriate size, is continuously introduced into the inlet. The waste is transported through the inner and outer screws of the rotating cylinder, and is continuously contacted with heat in the process of being transported while being separated and spread by the diaphragm of the inner screw. At this time, the generated steam is discharged through the empty space of the screw by the operation of the steam discharge device is a continuous input and drying is made.

The present invention has a structure in which a rotating guide plate is installed at regular intervals in the direction of travel of the outer screw of the rotating cylinder in order to further improve the efficiency of the drying device, and prevents the adhesion of garbage on the conveying passage by the screw (固 着 防止 裝置) Together with the installed configuration is presented.

The rotating guide plate has the characteristics of the screw conveying structure operated at low speed to increase the actual conveying distance by allowing the transferred object to be brought into contact with the front of the fixed cylinder while being in contact with the 3/4 surface of the fixed cylinder. In addition, it improves the drying efficiency by increasing the thermal contact surface and mixing continuously in the transport state.

FIG. 6 is a view illustrating a structure to which a rotation induction plate is applied, and the rotation induction plate 80 has a structure in which a plate 82 protruding with a predetermined length is attached to a wing surface of a screw formed in a spiral shape.

The plate is formed over approximately 1/2 to 2/3 of the length of the spiral screw pitch so that the passageway 81 between the wings is not completely closed, and is configured to allow steam to escape through the open passageway 81.

The rotation guide plate may be attached to the rectangular plate in the longitudinal direction to the screw blade, it may be made of a triangular plate or an elliptical plate. The plate formation interval can normally be provided in one or more pitches per pitch of a helical screw, and the formation density can increase from the end of a helical screw to the end. This structure is large enough to be filled at the stage when the dry material is put into it, but it is transported to some extent between the screw blades, but as the drying progresses, the volume decreases, thus narrowing the installation interval of the rotating guide plate. It offers the advantage of effectively increasing the heat contact area and the transfer distance by lifting the workpiece to the upper apex.

The action of the rotation guide plate can be explained through a comparison of Figs. 7A and 7B showing the dispersion conveying range of the object to be dried.

Drying is carried out by a process in which the dried material is heated and cooked through the contact with hot air, a fixed cylinder and a rotating cylinder in a heated state, and a screw is discharged. Contact with these heat sources, limited contact surfaces, or short travel distances in which the dry matter is entangled inevitably leads to a decrease in drying efficiency.

Figure 7b shows the contact state of the object to be dried in the case of using a conventional screw, the conventional screw-type conveying method is larger than the input amount of the transfer amount, in the case of the drying apparatus should also secure a space for steam discharge. For this reason, the to-be-dried material which is not filled in the space between the screws from the beginning is transferred by the rotation of the screw, and drying by heat contact is performed, thereby reducing its volume. The continuous drying device is rotated at a low speed of about 60 rpm in order to increase the thermal contact time, so that the dry material does not have a fast pushing speed and the frictional resistance between gravity and the dry material is more affected. Since it is largely received, when the rotating cylinder is rotated in the clockwise direction, the feed is made almost in a straight line while being in contact with the inner wall surface of the fixed cylinder at an interval of about 180 ° to 270 °. Therefore, the to-be-dried material is not transported in a wide spread state, but is conveyed in a narrow space and brought into thermal contact, and is transported on a nearly straight line, so that the transport distance is short, and thus high drying efficiency cannot be expected.

Figure 7a is for explaining the rotation guide plate according to the present invention, as described above, the to-be-inserted object is pulled up to the upper top of the circle by the induction plate, except for some spaces falling by gravity. It is thermally contacted over the front face between the fixed cylinder and the rotating cylinder, and is carried with a screw-like spiral. At this time, the space between the rotation guide plate and the screw blade is opened without being blocked and used as the discharge passage of the steam generated during the drying process, so that the steam is discharged smoothly. Therefore, the transfer distance is significantly increased compared to the straight line transfer, thermal contact is made in a dispersed state, and the steam is discharged smoothly, so that the drying efficiency is remarkably improved, and the length or volume of the rotating cylinder is reduced by that portion. The speed of rotation can be increased, reducing the cost of installation and operation and improving the processing speed.

Securing prevention device 90 is to prevent the garbage is accumulated on the waste transport passage, and the accumulated waste is hardened and fixed, it is made of a structure attached to the chain on the wall surface of the inner and outer screws at a predetermined interval.

The chain acts to shake off the attached garbage by constantly moving according to the position at the time of rotation of the rotating cylinder, and serves to prevent the grains to be tangled together. This prevents the solidification of foreign matters caused by tangled garbage, and facilitates transport and heat contact, and scatters and diffuses the dry matter so that it contacts the heat in small particles, allowing it to dry quickly and effectively to the inside of the trash. In addition, the internal cleaning cycle can be increased, resulting in lower maintenance costs.

The anti-sticking device is installed on the diaphragm formed in the inner screw to shake off the rubbish when the rubbish is dropped by the diaphragm to further improve the above-mentioned effect, and to form the rotation guide plate as well as the structure to which the general screw is applied. In this case, by forming in the corners of the rotation guide plate it is possible to prevent the foreign matter is fixed to these corners to lose the function of the rotation guide plate.

8 is a food waste treatment system to which the present invention is applied, and the food waste filled in the storage tank 100 is introduced into the foreign material remover 120 by the transfer screw 110 to filter food waste in which foreign substances such as vinyl are filtered. 130 to the pulverization, and conveyed it to the wastewater treatment unit 140 shows a continuous process of introducing the dehydrated waste to the dryer according to the present invention to some extent.

The present invention by the above configuration is the effect of continuously adding and drying the food waste or sludge generated in the waste water treatment process, improve the efficiency of the drying treatment, and can efficiently process the waste by a series of continuous processes Has

Claims (4)

Rotating cylinder is installed in the fixed cylinder, the outer screw is formed on the outside of the rotating cylinder, the end of the rotating cylinder is formed in the end of the rotating cylinder is formed with a dropping hole penetrating into the inside and outside of the rotating cylinder, inside the rotating cylinder An inner screw having an opposite direction to an outer screw is installed, and the outer screw is rotated by a guide plate that is rotated at a predetermined interval on the blade in the direction of travel of the screw to rotate the dried material introduced through the inlet formed on the fixed cylinder. It is transferred to the spiral trajectory by the rotating guide plate formed on the outer screw from the outside of the cylinder, and is dried by the hot air applied through the opening of the rotating cylinder while being transferred by the inner screw from the inside of the rotating cylinder and discharged to the outlet. Steam from the air flows through the passage between the rotating guide plate Garbage drying apparatus configured to be discharged to the outside of the fixed cylinder. According to claim 1, wherein one or more rotation guide plate is installed per pitch of the spiral screw, the guide plate in the direction of rotation of the rotary cylinder is formed on the longitudinal side of the dropping port, the inner screw is formed with a diaphragm blocking the passage between the wings Garbage drying treatment apparatus characterized in that the structure. According to claim 1, Garbage drying treatment apparatus of the garbage characterized in that the chain-type garbage fixing device is coupled to the diaphragm formed on the inner screw including the transfer surface of the rotating guide plate of the outer screw. The fixed cylinder according to any one of claims 1, 2, or 3, wherein the fixed cylinder is separated, the rotating cylinder therein is continuous through each fixed cylinder, and both ends of the rotating cylinder and the separating portions of the fixed cylinder are rolled. Supported by a bearing and coupled with a driving device, the end of the outer screw belonging to one fixed cylinder and the start end of the outer screw belonging to the other fixed cylinder are connected by a connecting passage formed inside the rotating cylinder, thereby fixing the object to be fixed. Garbage drying treatment apparatus, characterized in that configured to be continuously transported to the cylinder.

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