KR101159494B1 - tunnel type a drying machine - Google Patents

Abstract

The present invention relates to a dryer, and more particularly to a tunnel type dryer for drying and treating viscous materials such as sewage sludge. To this end, the screw device for transporting the sewage sludge to the dryer is rotated to the left and right, and the rotation speed is adjusted to crush the sludge by shocking and to rupture the membrane of the sludge. And a microwave radiation device to resonate in the dryer. Also, by using the ultrasonic wave generated by the ultrasonic device, the cohesive force of water is weakened to increase the surface strength to install the high-pressure air discharge isolation pocket to discharge the dried object out of the dryer. Existing large facilities and site costs, as well as the energy savings can be obtained more efficient than the conventional can be used industrially useful.

Dryer, sludge. Screw, cell membrane, microwave, resonance, ultrasonic, high pressure air. Humidity, cohesion.

Description

Tunnel type a drying machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dryer, and more particularly, to a tunnel dryer (hereinafter, referred to as a "dryer") which is intended to dry and process pollutants containing moisture such as urban sludge in cities and emitting a bad smell.

In order to treat the pollutants such as the conventional slurry of the river, additional facilities and equipment are required. Therefore, waste of electric power and geometric expenses are required. In reality this is. Therefore, it is known that after mixing a predetermined amount of dry sludge with a high moisture content sludge, the moisture content is adjusted, and the sludge is introduced into the dryer. To fall down again (Korea Patent No. 10-0375818), or to continuously treat the organic slurry, which is a sediment in sewage and wastewater treatment plants, to be dried and reduced for reprocessing (Korea Patent No. 10-0813467), or to input sludge. It is also known to control the temperature of the inside of the tube and the motor for rotating the spiral conveyor for transporting the sludge in the tube including an inlet for opening and an opening for discharging the dried sludge (Korean Patent No. 10-0992590), Is processed into a sheet into a thin, long rope, and then granulated by gravity. That the feeder for feeding the sludge to the drying air mesh belt by a hot dry hot wind while passing through the body of early multi-stage I (Korea Patent No. 10-0395119) are known also.

On the other hand, by reducing the sewage sludge using microwaves, hot air and smoking materials, it is possible to economically perform such as energy saving and reuse of sewage sludge (Korea Patent No. 10-0541159), or use vibration or incineration treatment or It is also known that the stirring of the dryer allows the inverter to be controlled and to improve the drying efficiency by controlling the operation of the hollow rotating shaft according to the drying condition of the organic waste in the dryer (Korean Patent No. 10-0319410). In recent years, a method of drying sludge using microwaves supplied from a microwave supply unit (Korean Patent Nos. 10-0955269 and 10-0966104) and the like are known.

Sewage sludge is mostly composed of organic matter composed of microorganisms, and such sludge contains moisture in the cell membrane, and the cell membrane is insulated and airtight, which is very difficult to dry. The present invention is to solve the problem of energy efficiency and processing capacity, which is a problem of the dryer implemented mainly on the conventional evaporation while drying the moisture inside the cell membrane easily.

In order to solve the above problems, in order to crush the cells forming the epidermis of the microorganism by mechanical friction in the process of adding sewage sludge to the tank, the vertical pressure during the exit of the gap of the gear during the introduction of the dry matter to the dryer. Surface rupture by first rupturing the new membrane by applying horizontal bibeam force and ultrasonic shock, and weakening the cohesion of moisture by ultrasonic heating and ultrasonic wave during transfer of dry matter from inside the dryer. Had to raise.

In addition, in order to maximize the overall energy efficiency, the final dehydration process is to provide an apparatus and a process for efficiently drying by the diffusion of moisture due to the relative humidity between the air to be dried at a high temperature and high pressure in the transported material pile and the dry matter. .

To this end, in the present invention, before the sludge is introduced into the dryer, the surface of the microorganisms is crushed by mechanical impact and uniformly quantitated by the transfer screw inside the dryer, and the material is transferred through the above process. In order to increase the agitation process, the device is designed to make the screw rotate at high speed, forward and reverse, to induce internal resonance in the radiation of the microwave, and to effectively dehumidify the moisture in the microwave path. To prevent damage to energy due to the presence of heat, and to uniformly eject high temperature and high pressure air from inside the material to be dried, and reduce the resistance due to sludge during high speed, forward and reverse rotation of the screw. In order to configure the structure for heat generation of the screw itself.

As described above, the present invention is to maximize the relative humidity of the air and the mechanical and electrical scheme for effectively ejecting the moisture inside the cell to escape the water, so the energy efficiency is relatively high, unlike the prior art, the efficiency is very large Since the site and facilities of the same size are omitted, the effect of the industrial scale is not enough to be prepared.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, but is not limited thereto.

1 is a basic configuration explanatory diagram of the present invention, the body 100 of the dryer of the present invention, as shown, the exhaust port 1 and the sludge inlet 4 is installed on the upper right side of the body 100, the body 100 ) Consists of a support (2) supporting the support and the reinforcing bar (3) to connect the support to each other, the left side of the body 100 is a utility component 400, and the right side the drive motor (6) and the feed screw A conveying screw bundle 600 for accommodating the gear bundle 200 is installed, and a horizontal bibeam motor 301 is provided on the front face of the building shredder 300 under the inlet 4, and a dry matter on the rear face thereof. The fixed-quantity discharge drive motor 302 is installed.

FIG. 2 is a diagram showing the left side of the exhaust port 1 of the dryer described above. The utility bundle 400 supporting the exhaust port 1 has a utility holder 401, a conveying screw bearing 402, and a high pressure air distribution inlet pipe 410. ) And a pipe heater hole (420) are indicated.

FIG. 3A is a partial explanatory view of the inlet 4 and the crusher 300 (B) and (C) are shown for the longitudinal section description. That is, vertical pressure is applied to the left and right sides of the shredder 300 through the above-described horizontal bibeam motor 301 and the proper quantity extraction driving motor 302 to be driven when a dry object (not shown) is introduced through the inlet 4. The gear 310 for driving and the gear 313 for the horizontal reciprocating rotating beams, and the ultrasonic vibrator 311 is installed. The longitudinal cross-sectional view of the vertical transfer pressure gear 310 is shown in (b). That is, both ends of the vertical transfer pressure gear 310 are transmitted to the waveguide 312 through the ultrasonic vibrator 311, and the shock absorbing gear 314 is installed on the other side.

4A is an explanatory side view of the dryer body 100 of FIG. 2, the high pressure air discharge isolation pocket 411 and the exhaust pipe, the microwave resonator tube 102, the microwave radiator 501, and the microwave power source in the center. 502 and the microwave waveguide 503 are shown and an enlarged explanatory diagram of the high pressure air discharge pocket 411 and the high pressure air discharge 412 is shown in FIG.

5 (a) is a detailed view of the conveying screw bundle 600 of the dry sludge, the rear end bearing insert 601 on one side of the conveying screw and the shear rotating mechanism inserting hole 604 on the other end, and the left rotating screw ( 602 and a right turn screw 603 are shown, and a left turn screw 602 is formed on the left side of the feed screw and a right turn screw 603 is formed on the right side of FIG.

6A illustrates a perspective view of the feed screw, and FIG. 6B illustrates a pipe heater configuration 420 and a heater insertion pocket 421 in a partial cutaway view.

6 (a) (b) and (c) are views for explaining the installation state of the microwave resonator tube 102 and the air intake port 103 in the exhaust pipe 1 in the udiryl holder 401,

8A is an explanatory view of the high pressure air outlet 412, the high pressure air pocket diaphragm 413, and the high pressure air distribution inlet 414 in the high pressure air discharge isolation pocket 411, and FIG. (A) (b) (c) are explanatory diagrams of the high pressure air discharge isolation pocket. FIG. 10 is an explanatory view of the high pressure air distribution tube 410 and shows the micro holes A, B, C, D, and E for high pressure air input having different diameters.

11 is a layout view of the transfer motor connecting shaft 204 and the right rotation gear 202 and the absolute position counter 203 and the transfer motor connecting shaft 204 installed between the feed screw gear bundle 200 and the bundle cover 201. By the following will be described in detail the operation and effect of the present invention.

The movement of the gear 313 which is horizontally reciprocated under pressure by two gears 310 and 313 horizontally installed while passing through the inside of the metered-in uniformly distributed building shredder 300 is injected into the dry object inlet 4 and One gear shown in Figure 3 is configured to rupture the cell membrane by the effect of the ultrasonic wave delivered by the ultrasonic vibrator 311 and the ultrasonic waveguide rod 312 so that the internal water of the cell is easily eluted The crusher 300 is a vertical reciprocating pressure gear 310 is rotated by the quantitative discharge drive motor 302 of the two gears horizontally driven by the two motors (301, 302) and the horizontal reciprocating rotation engaged with the gear As the gear 313 rotates, the rotational force of the horizontal bibeam motor 301 is applied to rupture the cell membrane by crushing the material between the two gears through four or five horizontal movements during one gear rotation.

In addition, it is necessary to give a high acceleration shock because the soft cell membrane is effectively ruptured. As shown in FIG. 3, the ultrasonic waveguide rod 312 and the ultrasonic wave applied to the rod are contacted with each other in the vertical transfer pressure gear 310. The ultrasonic vibrator 311 is to give hundreds of thousands of horizontal vibrations per second effectively to rupture the cell membrane of the microorganism.

The to-be-dried material which has passed through this is spread in a wide and thin layer, and is put into the conveying screw bundle 600, and by adjusting the speed of the clearance adjustment 315 of the fixed-quantity discharge gear and the fixed-quantity discharge drive motor 302, quantitative injection becomes possible.

As such, the feed screw bundle 600 has several rotary screws installed at the lower portion of the cylindrical transfer path as shown in FIG. 4, and these screws are connected to the feed screw rotary gear bundle 200 of FIG. It is configured to rotate in the opposite direction, and as shown in Fig. 5, the direction of rotation of the feed vanes of the respective screws 602 and 603 is reversed so that the object to be dried can be advanced in the dryer according to the direction of rotation of the drive motor 6 of this screw. You can go backwards. Due to the short length of the dryer, the rotational speed of this screw can only be operated at about 3 to 4 rpm. However, in this case, the efficiency of drying is low because the dry material having high viscosity and high moisture content is not stirred well. Given the rotational force is to induce the spreading and stirring effect of the dried material due to the rotational inertia. Therefore, if the screw is rotated forward, the to-be-built object is advanced along the cylindrical surface to the left and right by the angle of the left and right screws, and if it is rotated in the reverse direction, the to-be-assembled object is gathered into the inside of the screw array and moved backward. After the rotation, stop, and then rotate the low-speed rotation three times, the dried material is completely transferred, maximizing the stirring effect to expand the water evaporation surface area. At this time, quantitative transfer is difficult due to mechanical errors caused by slippage due to inertia, backlash of gears, etc., when the motor stops. To solve this problem, as shown in FIG. Read in to control feedback. In the situation where the sludge is filled inside the dryer, the high speed rotation requires tremendous force and a problem in the durability of the screw causes the conventional high speed rotation. However, the present invention suggests several means for solving the problem. did. That is, as a means for heating moisture inside the cell membrane, as shown in a horizontal cross-sectional view of FIG. 4, several to tens of microwave radiators 501 are installed along a dryer transfer path, and an ultrasonic vibration waveguide between them 504 is installed. Since the principle and effect of microwave penetration and the internal water heating of cells are well known facts, the description thereof is omitted and the characteristics of the present invention are cylindrical air discharge pipes 102 installed in the center of the cylindrical dryer. As shown in FIG. 7, the air inlet 103 is larger as it is farther from the outlet 1 and smaller as it is nearer, and acts as a uniform pressure along the dryer passage with a long suction force. This discharge pipe is installed in the center of the cylindrical dryer, and its diameter is designed to maintain a series of functional relationships with the wavelength of the microwave emitted in relation to the external dryer cylinder, so that the emitted microwave effectively By resonating, the moisture rising to the top of the dryer is sucked from the center so that the moisture does not stay in the upper part to obtain the electric field blocking effect by the moisture in the microwave traveling space. In addition, this discharge pipe was installed at the top of the dryer to set the frequency of the ultrasonic wave so as to mutually resonate with the ultrasonic wave downwards. Since the structure and size of the microwave radiator and the ultrasonic radiator according to the present invention are well known, they are omitted in order to avoid complication of the specification.

The following is the most important point in the present invention, in order to obtain the drying effect as a small energy input, it is implemented as a function of relative humidity of air. When defined as 100%, 1 Kg of air at 99 ° C can contain 17 Kg of water. Therefore, in order to fully utilize the function according to the relative humidity, the present invention provides a high-pressure air discharge isolation pocket 411 between the screws as shown in the enlarged view of FIG. It also demonstrates in parallel.

In other words, if a highly viscous dry material is driven between the screws and the distribution is not uniform, when compressed air is discharged between dry materials, the discharge resistance is rapidly discharged to a place where the discharge resistance is small. As shown in FIG. 9, the air pocket of FIG. 8 was connected in series to insert the high pressure air distribution inlet tube 410 at the center and completely block the air pockets. This air pocket arrangement is assembled by the high-pressure air pocket diaphragm 413 in close contact with the curved surface of the bottom of the dryer is formed between the inner wall of the dryer and the air pocket is formed a space of about 1mm apart and the bottom of the air pocket The air was discharged through the air outlet 412 that is drilled in the longitudinal direction. The space formed under each pocket is blocked by the air pocket diaphragm to cover the air flow between the spaces under the pocket.

The high-pressure air distribution inlet pipe 410 penetrated through each air pocket has one hole for each air pocket, and as shown in FIG. In view of this, the sizes of the holes A, B, C, D, and E were different.

During the forward and reverse rotation of the workpiece conveying screw, the inside of the pile to be stirred is agitated, and a large amount of air emitted from the air outlet 412 provided between the screws reduces the mutual tension of the viscous material stuck to the screw, It makes it easy to rotate, as well as a number of air bubbles that function as essential purposes to draw in and drain moisture between the tissues to be dried. In this process, the effect of the ultrasonic wave is added, and the cohesive force of several minutes is reduced, and the finely divided air bubbles are subjected to the movement of moisture by diffusion until they reach 100% of the relative humidity, and are lifted out of the air intake port 103.

In general, most dryers use a mechanism in which the temperature inside the dryer is maintained at 200 ° C to 300 ° C to obtain evaporative heat and then evaporate. However, the energy efficiency of the dryer is reduced because the heat of the evaporative heat is very large. . In order to solve such a problem, a method of applying a negative pressure inside the dryer has been attempted in an effort to lower the evaporation temperature, but the apparatus is complicated and its effect may be weaker than the present invention. In the present invention, by operating the temperature inside the dryer within 150 ℃ to prevent waste such as unnecessary energy is discharged to the outside.

In order to reduce the rotational resistance of the lower screw and supply heat directly to the object to be dried, the rotating shaft of the screw in the present invention is composed of a hollow pipe, as shown in the cross-sectional view (b) of FIG. The other side is blocked, but the heater insertion pocket 421 is configured therein so that the pipe heater 420 can be concave, and the inside of the pipe is hermetically sealed to maintain pressure. In the airtight pipe, an appropriate amount of liquid heat medium is filled. When the pipe heater 420 inserted in the heater insertion pocket generates heat and the liquid heat medium inside is heated, the liquid heat medium rapidly vaporizes in a liquid state. It becomes gaseous and generates high pressure inside the screw pipe. The pressure generated here generates heat in accordance with Boyle's law, which is conducted through the screw pipe to the screw to heat the dried material. The dried material thus heated is deteriorated in viscosity due to the heating of moisture and the expansion of the void gas, thereby decreasing the viscosity of the contact surface and reducing the rotational resistance of the screw. In addition, the water vapor inside the expanded screw rotating pipe cools down after heat transfer, becomes liquid again, flows down to the pipe heater, heats up again, evaporates, and contracts again, transferring heat of the pipe. To this end, the opposite side of the dry material inlet of the dryer equipped with the pipe heater is configured to be about 5 degrees lower than the inlet so as to dissipate heat from the screw pipe and allow the condensed water to flow by gravity.

In the detailed description of the present invention, the means for generating compressed air, the means for evacuating the air, and the process of discharging the dried sludge are well known in the art, and thus the description thereof is omitted.

1 is a perspective view of the entire construction of a dryer for explaining the present invention,

FIG. 2 is a rear side explanatory diagram of FIG. 1;

Fig. 3 (A) is a perspective view for explaining the invention breaker of the invention, (b) is a cross-sectional view taken along the line A-A of (a) from the side.

4 (a) is an explanatory diagram on the opposite side of FIG. 2, (b) is a partially enlarged explanatory diagram of (a),

Figure 5 (a) is a layout view of the dry feed screw (b) is a structural diagram.

Figure 6 (a) is a cross-sectional view of the construction transfer screw and (b) is a schematic diagram of the pipe heater.

Figure 7 (a) is an explanatory view of the air inlet, (b) is a left side of (a), (c) is a perspective view,

Figure 8 is a high pressure air discharge isolation pocket road (a) is a perspective view (b) is a left and right side view.

9 is an explanatory view of the air pocket for high pressure air release, (a) is a perspective view, (b) is a side view, and (c) is an assembly configuration diagram.

10 is a structural explanatory diagram of a high-pressure air inlet tube,

11 is an explanatory view of the conveying screw rotating gear bundle (a) means the main body, (b) means the lid.

[Description of Code in Drawing]

1. vent, 2. support, 3. support stiffener, 4. drying inlet, 6. screw driven motor,

100. Dryer body, 102. Dryer exhaust pipe and microwave resonator tube, 103 air intake,

200. Feed screw gear bundle, 201. Feed screw gear cover. 202. Right rotating gear, 204. Feed motor connecting shaft, 205. Left rotating gear,

300. Dosing-evenly distributed building shredder, 301. Horizontal bibeam motor, 302. Quantitative discharge drive motor, 310. Vertical feed pressure gear, 311. Ultrasonic vibrator, 312 ultrasonic waveguide, 313. Horizontal reciprocating rotating beam beam, 314. Buffer Spring, 315. Gear clearance adjustment screw,

400. Bundle of utility components, 401. Utility fixture, 402 feed screw bearing, 410. High pressure air distribution inlet, 411. High pressure air discharge isolation pocket, 412. High pressure air outlet, 413. High pressure air pocket diaphragm, 414. High pressure air distribution Inlet tube insert, 420. Pipe heater hole, 421. Heater insertion pocket,

500. Bundle of electromagnetic devices, 501. Microwave radiator, 502. Microwave power source, 503. Microwave waveguide, 504. Ultrasonic vibration waveguide,

600. Feed screw assembly, 601. Rear end bearing insert, 602. Left turn screw, 603. Right turn screw, 604. Shear turn gear insert.

Claims (10)

Body portion; A sludge inlet formed on one side of the body portion; An exhaust port formed at the other side of the body part to discharge air inside the body part; A horizontal reciprocating gear and a vertical feed pressure gear are engaged with each other, and the vertical feed pressure gear is provided with an ultrasonic vibrator and an ultrasonic waveguide rod, and the sludge injected into the sludge inlet is crushed by ultrasonic waves transmitted by the ultrasonic vibrator and the ultrasonic waveguide rod. Crusher; A microwave radiation device for heating moisture in the sludge by irradiating the sludge with microwaves; Ultrasonic vibration waveguide rod to increase the activity of the surface by irradiating the ultrasonic sludge; A feed screw composed of a left turn screw and a right turn screw, alternately performing a forward high speed rotation and a reverse low speed rotation; A drive motor for rotating the feed screw; A pipe heater provided inside the transfer screw; An air discharge pipe communicating with the exhaust port and provided inside the body, wherein an air intake port is formed larger as the air inlet is farther from the exhaust port, and smaller as the air inlet port is formed; And A high pressure air discharge pocket installed between the transfer screws; / RTI > The high pressure air discharge pocket is formed by connecting a plurality of air pockets in series, the high pressure air discharge pocket is provided with a high pressure air distribution inlet tube penetrating the plurality of air pockets, each of the high pressure air distribution inlet tube Each air pocket is formed with air holes varying in size depending on the sludge transport path, The high pressure air discharge pocket is installed to be spaced apart from the inner circumferential surface of the body portion by a predetermined interval, and the high pressure air pocket diaphragm is interposed between the high pressure air discharge pocket and the inner circumferential surface of the body portion, and the high pressure air pocket diaphragm is interposed between the plurality of air pockets. To block the flow of air, One side of the high-pressure air discharge pocket is tunnel-type dryer, characterized in that the air outlet is formed in communication with the air hole is discharged. The method of claim 1, The horizontal reciprocating gear and the vertical transfer pressure gear constituting the shredder are tunnel-type dryer, characterized in that the rotational movement and the horizontal movement at the same time. The method of claim 1, The body portion is formed in a cylindrical shape, the air discharge pipe is installed in the center of the inside of the body portion, the microwave radiation device and the ultrasonic vibration waveguide rod is installed on the upper portion of the air discharge pipe, The diameter of the air discharge pipe is a tunnel type dryer, characterized in that the microwave and ultrasonic waves are set so as to effectively resonate inside the body portion. delete The method of claim 1, The body portion is formed in a cylindrical shape, the conveying screw is the rotational direction of the left turn screw and the right turn screw with respect to the center of the lower curved surface, the lower curved surface along the body portion, Tunnel-type dryer, characterized in that the sludge is spread along the inner wall of the body portion through the forward and reverse rotation of the transfer screw. The method of claim 1, The rotational speed of the feed screw is proportional to the length of the body portion, The feed screw is rotated forward and then stopped and reversed again to advance the sludge, A tunnel type dryer comprising repeating an operation of retreating the sludge by a distance smaller than an advanced distance, and repeating the sludge is slowly transferred and stirred and unfolded. The method of claim 1, The conveying screw further comprises a rotation angle absolute counter for feeding back the backlash of the gear, sliding due to the motor inertia by measuring the rotation angle of the conveying screw. The method of claim 1, The high-pressure air discharge pocket is formed in a triangular column shape, tunnel-type dryer characterized in that to use the relative humidity of the high-pressure air discharged from the high-pressure air discharge pocket to effect the diffusion of moisture. delete delete

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