KR101070437B1 - Sludge drying machine using one axis - Google Patents

Abstract

The present invention relates to a sludge drying apparatus, comprising a main body into which high-heat air is introduced, a shaft installed vertically at the center of the main body to receive power from a power unit, and rotating therein, and into which sludge is introduced into the upper part of the main body. Sludge supply port formed for the purpose, and the inner drop groove which receives the sludge falling from the sludge supply port to dry the sludge by the heat supplied from the heat supply device, and a part of which is cut inward in the radial direction from the shaft to drop the sludge Two or more drying plates which are formed in multiple stages while alternately arranged up and down are formed with a first drying plate formed therein and an outer falling groove which is partially cut outwardly in the radial direction from the shaft and formed with an outer falling groove which can fall; Installed on the drying plate, the sludge being dried on the drying plate while rotating Centralized to have a high drying efficiency, characterized in that it comprises a scraper that is attached to the drop groove and the outer drop groove to be inclined toward the drop groove so as to fall into the drop groove is attached at regular intervals It is a type sludge drying device.

Sludge, drying device, drying plate, scraper, drop groove, direct heating type, residual heat recovery

Description

Centralized Sludge Dryer {SLUDGE DRYING MACHINE USING ONE AXIS}

The present invention relates to a sludge drying apparatus, and more particularly, to improve the thermal contact ratio between the sludge and high temperature while moving the drying plate formed in multiple stages by inserting the sludge to the top to remove and dry the water contained in the sludge. It relates to a centralized sludge drying apparatus for increasing the drying effect.

Sludge is generally referred to as sludge from food, wastewater or sewage treatment. Sewage sludge contains about 50% organic matter and the water content is 99 ~ 99.5 of active sludge at 96 ~ 98% As high as%, it is difficult to handle.

As in the past, when various kinds of hydrous sludge are transported and dumped in the ocean or landfilled in the soil, it causes rapid pollution of seawater, soil, and groundwater, and it is difficult to secure a landfill site when directly landfilling.

As a method for lowering the water content of the sludge, the method of dewatering the existing sludge by high-speed rotation or pressing with a press cannot greatly increase the weight reduction effect in the sludge containing a large amount of polymer flocculant. There is a lot of rain and there is also concern about secondary pollution such as air pollution.

Therefore, in recent years, the sludge is heated and included in the sludge by supplying high temperature hot air directly to the device that stores the sludge or by supplying high temperature heat to the sludge by supplying cold air having a low moisture content. The sludge drying apparatus is configured to minimize the weight and volume of the sludge and to lower the water content of the sludge by configuring to perform the role of evaporating the moisture.

The general sludge drying apparatus has been progressed by lowering the water content of the sludge through various means such as hot air, cold air, high temperature and high temperature, steam by repeatedly performing the process of drying the sludge over multiple stages using a screw conveyor.

The main feature of this device is that the sludge flow moves in a zigzag form, and the drying process is performed while passing through one screw conveyor, and the sludge discharged from the screw conveyor undergoes horizontal movement and descending movement several times. By repeating several dozen or more times, the sludge is continuously dried.

In Patent Publication No. 10-0290064 (name of the invention: sludge drying apparatus) filed before the present invention, the sludge input screw and the discharge screw for discharging the dried sludge is formed in the upper and lower cylindrical tanks respectively It is provided, the inner center of the tank is provided with a rotating shaft which is rotated by a motor, the rotating shaft is formed with a plurality of holes and a rotary disk having a gap spaced apart from the inner peripheral surface of the tank by a plurality of stages, A plurality of fixing rods having a fixed blade for pushing the sludge toward the gap is provided on the upper side of each rotating disk, a plurality of holes are formed in the inner circumferential surface of the tank and discharged at a predetermined distance from the outer circumferential surface of the rotating shaft in the center A fixed disk having a hole is provided between the rotating disks, On the upper side of each of the fixed disk is provided with a plurality of rotary rods having a rotary blade for pushing the sludge toward the discharge hole, the hot air is supplied to the upper side of the tank to move toward the discharge screw through the discharge hole and the gap. It has been proposed to provide a hot air generator for supplying hot air to the sludge being dried to dry it.

However, the configuration is composed of a hot air pipe for supplying the hot air from the hot air generator to the top of the tank and an auxiliary hot air pipe for supplying to the lower side of the tank, the heat efficiency delivered to the sludge located on the rotating disk installed in a large multi-stage This low drying effect is not high, there is a limit of the configuration that a large amount of heat is lost in the drying process due to the recovery of residual heat existing in the tank is impossible and the energy consumption is high accordingly.

In order to solve the above problems, the present invention supplies heat to each drying plate composed of multiple stages in which the sludge is dropped and dried at the same time, and the drying plate of the sludge is dropped according to the drying process of the sludge. It is an object of the present invention to provide a sludge drying apparatus which is configured in various forms to achieve more efficient sludge drying operation and high energy efficiency.

In order to achieve the above object of the present invention, in the sludge drying apparatus, a space is formed therein so that sludge can be added and dried, and a main body into which high heat air is introduced, and vertically installed at the center of the main body A shaft rotating by receiving power from the apparatus, a sludge supply port formed to inject sludge into the upper portion of the main body, and a sludge falling from the sludge supply port to receive sludge and dry the sludge by heat supplied from a heat supply device, A first drying plate having an inner drop groove in which a portion is cut in the radial direction from the inside to form a sludge, and an outer drop groove in which a portion is cut in the radial direction from the shaft to the outside in a radial direction. Two or more drying plates installed in multiple stages while the second drying plates are alternately arranged up and down And a plurality of wings which are installed on the drying plate and are inclined toward the falling groove so that the sludge being dried on the drying plate is scraped by the inner falling groove and the outer falling groove while falling on the falling groove while rotating. The centralized sludge drying apparatus, characterized in that comprises a scraper attached to the.

The sludge drying apparatus of the present invention is configured to increase heat contact with the sludge by forming a through hole on the drying plate installed at the same time to the upper and lower at the same time to each drying plate formed in multiple stages through the sludge drying apparatus, the drying process At the end of the water is removed, discharge the sludge to minimize the weight and volume, there is an effect of improving the drying efficiency and energy efficiency by recovering and reusing the heat present in the device.

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

Figure 1 shows a sludge drying apparatus according to the present invention, the drying operation is carried out through the process of transporting the sludge to move the falling through the drying plate 100 formed in multiple stages of the sludge introduced from the upper portion of the main body 10 It is configured to be.

In general, the sludge has a shape of a certain size or more, and a variety of configurations are included because it is a solid or gel shape that can be fluidly deformed, or a type of sponge or paper that contains water is mainly formed from household sewage.

In the center of the main body 10 is installed in the longitudinal direction, the shaft 210 is rotated by receiving power from the power unit 200, and the sludge supply port 300 for the sludge is injected from the upper portion of the main body 10 is Formed.

When sludge is introduced from the sludge supply port 300, the sludge supply port 300 is dropped into a wear box 310 installed at the bottom of the sludge supply port 300. The wear box 310 is a device installed to uniformly drop the sludge downward. In addition, even if the sulfide is introduced in one direction through the sludge supply port 300, the wear box 310 serves to divide and supply the sludge as a whole.

That is, the sludge can be dropped directly through the sludge supply port 300 without the wear box 310, but the upper box is formed of a box-shaped warehouse box 310 formed with a curved shape to install the wear The sludge continuously falling into the box 310 spreads along the area of the wear box 310 and overflows through the bends, thereby dividing the sludge into a predetermined configuration.

The sludge injected through the sludge supply port 300 is dropped into the drying plate 100 through the same process as described above to dry the sludge by heating the sludge by heat supplied from the heat supply device 600. Going through.

The drying plate 100 is formed in two or more stages in the longitudinal direction, as shown in Figure 2 so that the scraper 400 and the hot air tube 500 is adjacent to the upper portion of the drying plate 100, respectively Is installed is configured to receive heat from the scraper 400 and the hot air pipe (500).

3 is a schematic plan view of the drying plate 100 and the scraper 400 is coupled, the drying plate 100 is in the form of a circular plate on the inside in the direction of the direction from the shaft 210 The first drying plate 110 is formed with an inner falling groove 111 in which a portion is cut and sludge can fall, and an outer falling groove in which a portion is cut out to the outside in the radial direction from the shaft 210 to fall. The second drying plate 120 in which the 121 is formed is alternately arranged up and down and installed in multiple stages.

The scraper 400 is connected to the shaft 210 and rotated to scrape the sludge being dried in the drying plate 100 into the inner falling groove 111 and the outer falling groove 121 to drop into the falling groove. It is composed of a plurality of wings 410 are formed to be inclined toward the drop groove, in the embodiment of the present invention as shown in Figures 2 and 3 are separated from the drying plate 100 by a predetermined height to stir the sludge Tooth-shaped stirring portion 420 to be configured further.

In addition, the scraper 400 is connected to the shaft 210, the shaft 210 is manufactured in the form of a through-pipe to receive heat from the heat supply device 600, the shaft 210 in the lower portion of the scraper 400 A plurality of heat outlets 430 were formed to release the heat supplied along the drying plate 100.

Therefore, the sludge falling onto the drying plate 100 is uniformly stirred in the drying plate 100 by the stirring unit 420 of the scraper 400 operating according to the rotation of the shaft 210 and at the same time the heat discharge port ( The sludge is heated by the heat discharged through 430.

In the drying plate 100, the first drying plate 110 having the inner falling groove 111 and the second drying plate 120 having the outer falling groove 121 are alternately disposed, and together with the shaft 210. In order to guide the sludge into the drop groove by the blade 410 of the rotating scraper 400 to drop to the drying plate 100 formed in multiple stages, the first drying plate 110 and the second drying plate ( Slope of the plurality of wings 410 formed on the scraper 400 installed in the 120 is preferably configured to correspond to each other as shown.

In addition, through the configuration as described above to increase the residence time in the drying plate 100 consisting of a multi-stage while inducing sludge in the direction of the drop groove by the continuous rotation of the scraper 400 to obtain the effect of increasing the drying efficiency of the sludge. .

4 is a plan view showing the hot air pipe 500 installed in the lower portion of the drying plate 100 and configured to heat the heat transferred from the heat supply device 600 at the lower portion of the drying plate 100. The hot air valve 520 is attached to the 500 to selectively utilize the heat supply and shutoff function, and if necessary, adjust the heat supplied according to the opening amount of the hot air valve 520 to control the drying plate 100. Allow the temperature to be adjusted.

In the embodiment of the present invention as shown, the hot air pipe 500 is formed in a plurality of lattice structure through the pipe through the inside so as to evenly distribute the heat in a circular shape hot air supply holes 510 located at regular intervals Through the heat is made of a structure that can be sprayed evenly toward the drying plate (100).

Therefore, in the present invention, the sludge is dropped on the drying plate 100 formed in multiple stages, and heat contact is applied to the sludge introduced in various materials and forms by performing a drying operation to apply heat to the upper and lower portions of the drying plate 100, respectively. It was configured to increase the rate.

In addition, the drying plate 100 is an indirect heating type drying plate 100a configured in a plate shape such that high temperature air heats the drying plate 100 to dry the sludge on the drying plate 100, or is illustrated in FIG. 5. As described above, a high-heated air passes through the sludge on the drying plate 100 and is formed of a direct heating drying plate 100b having a through-hole formed so as to directly touch the sludge.

As the sludge is dropped as the sludge drying operation is performed in the drying plate 100 formed in multiple stages, it is preferable that the drying operation is performed according to the state of the sludge because the nature and size of the particles are deformed.

Therefore, in the embodiment of the present invention, as shown in Figure 1, the drying plate 100 is formed in all five stages, the three-stage drying plate located at the top is composed of a general plate-like indirect heating drying plate (100a) And the lower two-stage drying plate is composed of a direct heating dry plate (100b) formed through the hole.

Although the direct heating drying plate 100b having the through hole has a much higher thermal contact rate than the indirect heating drying plate 100a, the entire drying plate may be configured as the direct heating drying plate 100b, but Since the general sludge introduced into the upper part may contain viscosity and water, and the sludge floats may be caught between the through holes and thus may not be smoothly stirred and dried. Thus, in the indirect heating type drying plate 100a as in the configuration of the present invention, the viscosity and moisture may be After the drying operation to remove the lower portion is preferably configured in such a way that proceeds to the direct heating dry plate (100b).

In addition, the size of the through-hole formed in the direct heating drying plate (100b) is usually formed in a size of 5mm to 1mm size when installed in the lower stage is configured to gradually decrease in size, in some cases the sludge is the direct heating drying Sludge falling to the lower through the through hole, but not through the drop groove formed in the plate (100b) can be seen as a sludge that has already completed the drying operation is reduced water volume is reduced, there is no problem at all.

Looking at the sludge drying process that proceeds through the configuration of the present invention as described above, when the sludge is injected into the sludge supply port 300 formed on the upper portion of the main body 10, the wear box located at the bottom of the sludge supply port 300 The sludge falls on the drying plate 100 formed in multiple stages via the 310.

The drying plate 100 is the first drying plate 110 and the shaft 210 is formed with an inner falling groove 111, which is partially cut inward in the radial direction from the shaft 210, the sludge can fall. The second drying plate 120, which is formed with an outer drop groove 121 that is partially cut in the radial direction from the outside and can fall, is alternately arranged up and down, and is formed in multiple stages.

The sludge is connected to the shaft 210 at the upper portion of the drying plate 100 by agitation part 420 for stirring the sludge and the inner falling groove 111 and the outer falling groove 121 of the drying plate 100. The scraper 400 is composed of a plurality of wings 410 formed to be inclined at a predetermined interval to induce the fall, the heat discharge port 430 is formed in the scraper 400 is transmitted from the heat supply device 600 The heat is sprayed towards the sludge on the drying plate 100.

The hot air pipe 500 is positioned at the lower part of the drying plate 100 so that the drying plate 100 is heated at the same time as the drying plate 100 is heated by the heat injected from the hot air supply hole 510. The feed was configured to increase the drying efficiency of the sludge.

In addition, the drying plate 100 located in the lower part in the drying operation of the sludge proceeds in a multi-stage is composed of a direct heating drying plate (100b) having a through hole so that high-temperature air passes between the sludge on the drying plate sludge Configure to heat directly.

The heat transmitted through the scraper 400 or the hot air pipe 500 are all transferred in a high temperature form in which heat generated from the heat supply device 600 can be sufficiently transmitted to the uppermost end along the pipe in the form of a pipe. To the drying plate 100 located in the upper portion of 10) to maintain a long drying duration, hot steam having excellent latent heat effect is injected, and at the lower portion formed by the direct heating drying plate 100b, hot heat is generated. It is composed of direct spraying so that continuous drying work can be performed.

The sludge supplied to the main body 10 through the above process is dropped to the bottom through a drying operation having a high thermal contact rate in the drying plate 100 formed in multiple stages and finally supplied to the screw conveyor 700 It is discharged to the outside.

In addition, the hot air that has dried the sludge and has moved to the upper part of the main body 10 already contains a certain amount of moisture because it has been used to dry the sludge. Residual heat recovery port 800 for sucking hot air can be installed.

Moisture contained in the hot air moved through the residual heat recovery port 800 is removed through the receiver 900, and although not shown, a separate dust removal dust collector is installed to remove dust and sludge odors, and then remove the hot air. By supplying heat to the heat supply device 600 again, the heat can be effectively reused without wasting heat.

What has been described above is only one embodiment according to the present invention, and the present invention is not limited to the above-described embodiment, and as claimed in the following claims, without departing from the gist of the present invention, the field to which the present invention pertains. Anyone skilled in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

1 is a centralized sludge drying apparatus according to the present invention.

Figure 2 is an internal coupling state in accordance with the present invention.

Figure 3a is a schematic coupling plan view of the first drying plate and the scraper according to the present invention.

Figure 3b is a schematic coupling plan view of the second drying plate and the scraper according to the present invention.

4 is a plan view of a hot air pipe according to the present invention;

5 is a plan view of a direct heating dry plate according to the present invention.

Explanation of symbols on the main parts of the drawings

10. Main unit 100. Drying plate

100a. Indirect heating dry plate 100b. Direct Heat Dry Plate

111. Inner drop groove 121. Outer drop groove

200. Power Unit 210. Shaft

300. Sludge Inlet 310. Wear Box

400. Scraper 410. Wings

420. Stirring unit 430. Heat outlet

500. Hot air pipe 510. Hot air supply hole

600. Heat Supply Unit 700. Screw Conveyor

800. Residual heat recovery sphere 900. Receiver

Claims (6)

In the sludge drying apparatus, A main body into which a space is formed so that the sludge can be dried and the air of high heat is introduced; An axis installed in the longitudinal direction at the center of the main body to receive power and rotate from the power unit; A sludge supply port formed to inject sludge into the upper portion of the main body; A first drying in which the sludge is supplied by the sludge falling from the sludge supply port and dried by the heat supplied from the heat supply device, and an inner drop groove is formed in which a portion is cut inward in the radial direction from the shaft to allow the sludge to fall. Two or more drying plates installed in multiple stages while the plate and a second drying plate having an outer drop groove which is partially cut outwardly in the radial direction from the shaft and are formed to fall therefrom are alternately arranged up and down; A plurality of wings are installed to be inclined toward the falling groove so as to scrape the sludge being dried on the drying plate while falling on the inner falling groove and the outer falling groove while being rotated on the drying plate. It is made, including a scraper, The drying plate installed on the upper side of the drying plate installed in the multi-stage is a plate-shaped indirect heating type drying plate configured to dry the sludge on the drying plate by heating the drying plate with high temperature air, and the drying plate installed on the lower side is A centralized sludge drying apparatus, characterized in that the direct heating type dry plate formed through the through-hole so that the hot air passes through the sludge on the drying plate and directly contact the sludge. delete delete According to claim 1, wherein the scraper is a centralized sludge drying apparatus, characterized in that the heat outlet for supplying heat to the sludge located on the drying plate is formed. The centralized sludge drying apparatus according to claim 1, wherein a hot air pipe for spraying heat transferred from the heat supply device is formed below the drying plate. The centralized sludge drying apparatus according to claim 1, wherein the main body is provided with a residual heat recovery tool for recovering residual heat in the main body and a receiver for removing moisture contained in hot air moving through the residual heat recovery tool. .

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