KR101429108B1 - The dehydration and aridity of the constructional sludge - Google Patents

Abstract

The present invention relates to an apparatus for dewatering and drying construction sludge and fine aggregates, the apparatus being able to prevent environmental pollution by separating water and sludge from construction sludge containing, for example, water, mud, and the like, and fine aggregates, which are generated in the construction or demolition of buildings, houses, etc. and an intermediate process of treating construction wastes, and being able to recycle construction sludge. In an embodiment of the present invention, the apparatus includes: a support frame having rotatable support members on both sides thereof; a hollow drying furnace installed on the support frame and having a water collecting opening in a lower portion thereof; a hot air blower for blowing hot air to one side of the hollow drying furnace; a hollow screen drum, slantingly installed in the drying furnace with each end of a rotating shaft formed on both ends thereof, is rotatably fixed on the rotatable support members of the support frame and has a plurality of drain holes on outer wall thereof; and a driving motor for rotating the screen drum in one direction by supplying torque to the shaft of the screen drum, wherein the construction sludge and the fine aggregates input into the screen drum are stirred by the rotation of the screen drum and drain water through the drain holes and are dried by the hot air supplied from the hot air blower.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehydration-

The present invention relates to a dehydrating and drying apparatus for construction sludge and fine aggregate. More particularly, the present invention relates to an apparatus for dehydrating and drying fine sludge and fine aggregate, The present invention relates to a dehydrating and drying apparatus for a construction sludge and a fine aggregate, which enables environmental pollution to be prevented and recycling of the construction sludge.

Construction sludge (sludge, sludge) generated during the construction and dismantling of buildings and houses and underground construction work Construction waste generated in the intermediate processing of construction waste such as construction sludge floating in pile works, tunnel excavation Underground sludge, sludge and bridges, which are washed away by the rocks and water, are treated in the process of disposal of sludge, sludge, and fine wastes generated during dismantling of concrete, The water contained in the water is dehydrated to a concentrated form with the lowest moisture content, thereby reducing the water content and minimizing the volume.

[0004] In the conventional technologies, Patent Application No. 10-1999-0055497 discloses a dewatering device capable of removing moisture from wastewater or sludge to reduce the volume of waste, thereby facilitating handling. In the dewatering device, A dewatering portion formed of a plurality of flanges fitted and fixed to an outer side of the triangular bar to hold and fix the triangular bar, and a scavenging portion formed on one side of the dewatering portion, A drive shaft formed on the shaft of the cylindrical dewatering unit and provided with a plurality of feed screws, driving means connected to the drive shaft, and a drive shaft connected to the drive shaft, And a solid-state discharging portion for discharging the solid sludge when the solid sludge is pressurized by a predetermined pressure or more, It suggests a dewatering device according to the screen.

Patent Application No. 10-2009-0076181 is directed to a unified dehydration and concentration type flocculation reaction apparatus in which an outer container has a clearance which is a space for the upper part of the inner container in a state of accommodating the inner container in an inner space, A sludge condensed together with the flocculant along the periphery of the inner vessel flows into the space for a single discharge end to separate water into dehydrated sludge, By providing a cleaner equipped with a brush for wiping the inner surface, the coagulant that accelerates the reaction and the stirring action to increase the reactivity of the charged sludge are realized, and the clogging of the screen due to the sludge particle debris is eliminated But also a technique capable of producing concentrated sludge through a gravity-operated dehydration process.

However, the above-mentioned technologies are technologies for dewatering devices for separating water and sludge by centrifugal separation or gravity type, and only the dewatering technology has been proposed. Therefore, it is difficult to remove moisture by drying or rehydration of the construction sludge, Respectively.

An object of the present invention, which has been devised to overcome the above-mentioned problems, is to provide a dehydrating and drying apparatus for a construction sludge and a fine aggregate which can separate and dry moisture from a construction sludge or fine aggregate containing a large amount of water and immediately discard or reuse it. .

The above object is achieved by the following constitutions provided in the present invention.

According to the present invention, there is provided a dehydrating and drying apparatus for a construction sludge and a fine aggregate,

A support frame having pivotal supports on both sides thereof;

A hollow drying furnace installed in the support frame and having a collection port formed at a lower portion thereof;

A hot air blower for blowing hot air to one side of the hollow drying furnace;

A hollow screen drum which is installed in a state where the end portions of the rotating shafts formed at both ends of the rotating frame are fixed by a pivoting structure to be inclined in the drying furnace, and a plurality of drainage holes are formed on the outer wall; And

And a driving motor for rotating the screen drum in one direction by applying a rotational force to the rotating shaft of the screen drum,

The construction sludge or fine aggregate charged into the screen drum is configured to be dried by the hot air supplied from the hot air while discharging the water through the drain holes while being stirred by the rotation of the screen drum.

Preferably, the screen drum is loaded with a construction sludge or fine aggregate by a supply conveyor that discharges the construction sludge or fine aggregate discharged through the discharge port of the hopper, and a control plate for controlling the opening amount of the discharge port is provided in the discharge port of the hopper, Lt; / RTI >

The amount of the sludge or the fine aggregate to be supplied to the screen drum is controlled by controlling the amount of the discharge port formed in the hopper through the throttle plate.

More preferably, a tapered roller bearing in which a tapered roller is disposed is inserted between the outer ring and the inner ring into which the end of the rotating shaft is inserted,

A support bush having a support piece of the inner ring and a support piece to be supported is provided on a rotary shaft passing through the inner ring,

The rotation axis of the screen drum is configured to be stably supported on an inner ring supported by a tapered roller through a support piece of a support bush in a tapered configuration on the outer ring.

A conical diffusion thermal insulating cover is provided on the rotation support base facing the hot air blower to prevent the deterioration of the tapered roller bearing mounted on the rotary support by hot air and the hot air discharged through the hot air blower to the screen drum and the drying furnace .

As described above, the apparatus for dewatering and drying fine sludge and fine aggregate according to the present invention comprises a screen drum disposed in a rotating structure inside a drying furnace, and discharging high-temperature hot air to the rotating screen drum and the drying furnace.

Therefore, the construction sludge or the fine aggregate charged into the screen drum through the feed conveyor is stirred by the rotation of the screen drum to discharge moisture through the drain holes, and can be quickly dried by hot hot air provided from the hot air.

Since the inner ring of the tapered roller bearing which stably supports the rotation axis of the screen drum is supported on the inner wall of the outer ring by tapered rollers, the inner ring of the tapered roller bearing is damaged by the load applied by the screen drum, The phenomenon of deviation or deformation from the tapered roller bearing is prevented, so that it has improved durability.

The apparatus for dewatering and drying fine sludge and fine aggregate according to the present invention is characterized in that deterioration of the bearing for fixing the screen drum rotating shaft by the rotating structure is prevented by the conical diffusion heat insulating cover and the diffusion cap for diffusing the hot air, Since the hot air is uniformly diffused and supplied to the construction sludge or the fine aggregate, the construction sludge through the hot wind or the fine aggregate can be dried quickly.

FIG. 1 and FIG. 2 are a front view and a side view showing the entire structure of a dehydrating and drying apparatus for a construction sludge and a fine aggregate proposed in the present invention,
FIGS. 3 and 4 are enlarged views of the 'A' portion and the 'B' portion in FIG. 1, respectively,
FIG. 5 is a view showing an operation state of a dewatering and drying apparatus for a construction sludge and a fine aggregate proposed in a preferred embodiment of the present invention,
FIGS. 6 and 7 are enlarged views of the 'C' portion and the 'D' portion of FIG. 5, respectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dewatering and drying apparatus for a construction sludge and a fine aggregate, which are proposed as preferred embodiments of the present invention, will be described in detail with reference to the accompanying drawings.

1 and 2 are a front view and a side view showing the entire construction of a dewatering and drying apparatus for a construction sludge and a fine aggregate proposed as preferred embodiments of the present invention. FIG. 5 is a view showing an operation state of a dehydrating and drying apparatus for a construction sludge and a fine aggregate proposed as a preferred embodiment of the present invention, and FIGS. 6 and 7 are diagrams In which the 'C' portion and the 'D' portion are enlarged.

As shown in FIGS. 1 and 2, the apparatus 1 for drying a sludge and fine aggregate proposed as a preferred embodiment of the present invention is a sludge dryer for a construction sludge, which is stored in a hopper 60 and supplied through a supply conveyor 70, Or a dehydrated and dried fine aggregate.

1 and 3, the supply conveyor 70 is disposed at a lower portion of the hopper 60 having the discharge port 61 formed thereon, and discharges the sludge or fine aggregate discharged through the discharge port 61 of the hopper 60 And is supplied to the dehydrating and drying apparatus 1.

In this embodiment, a control plate 62 for controlling the discharge amount of the construction sludge or the fine aggregate is installed in the discharge port 61 of the hopper 60 through a guide 62a so as to advance and retreat, The supply amount of the construction sludge or the fine aggregate to be supplied to the dehydrating and drying apparatus 1 through the supply conveyor 70 is adjusted by regulating the opening and closing amount of the discharge port 61 formed in the hopper 60.

The adjusting bolt 63 is installed on the adjusting plate 62 provided on the discharge port 61 of the hopper 60 in the forward and backward movement structure and the adjusting bolt 63 The operator adjusts the amount of engagement with the fixing nut 64 by rotating the adjusting bolt 63 fastened to the fixing nut 64 so that the adjusting plate 62 is lifted up and down, The amount of opening and closing of the discharge port 61 formed in the discharge port 60 is adjusted.

The dewatering and drying apparatus 1 according to the present embodiment for dewatering and drying the construction sludge or fine aggregate is provided with pivot support rods 11 and 12 formed on both sides as shown in Figs. 1 to 2 and 5 A support frame (10); A hollow drying furnace 20 installed in the support frame 10 and having a collecting hole 21 formed at a lower portion thereof; A blower (40) for blowing hot air to one side of the hollow drying furnace (20); The end of the rotary shaft 31 is fixed to each of the rotary support rods 11 and 12 formed on the support frame 10 in a pivotal manner so as to be laid down in the drying furnace 20 and a plurality of drain holes A hollow screen drum 30; And a driving motor 50 for rotating the screen drum 30 in one direction by applying a rotational force to the rotating shaft 31 of the screen drum 30. [

The screen drum 30 is installed in the drying furnace 20 in a state of being laid down at an inclination angle of 5 to 15 degrees and the hot air 40 is heated by the screen drum 30 Is discharged into the drying furnace 20 accommodated therein.

The decelerating axis of the driving motor 50 and the rotating axis 31 of the screen drum 30 are connected to each other through a chain sprocket structure And the screen drum 30 provided in the drying furnace 20 is rotated at a low RPM of 5 to 30 RPM by driving the driving motor 50. [

Therefore, the construction sludge or fine aggregate charged into the screen drum 30 inclined by the supply conveyor 70 is gradually stirred by the rotating screen drum 30 to discharge moisture through the drainage holes.

At the same time, the hot air 40 discharges high-temperature hot air into the drying furnace 20 and the screen drum 30 to dry the construction sludge or fine aggregate which is dewatered while being stirred in the screen drum 30.

The moisture discharged from the construction sludge or fine aggregate during the dehydration and drying process is discharged to the outside along the catch 21 formed in the lower part of the drying furnace 20. [

In this embodiment, in implementing the dewatering and drying apparatus 1, an improved pivot support structure is provided between the rotary shaft 31 of the screen drum 30 and the pivotal support 11 formed on the frame structure 10, So that the durability of the pivot support structure can be improved while stably supporting the screen drum 30 for drying the heavy sludge or fine aggregate.

1 and 4, the pivot support structure includes a tapered roller bearing (not shown) in which a taper roller 13b is disposed between an outer ring 13a and an inner ring 13c into which an end portion of the rotation shaft 31 is inserted, ) 13 is provided in the rotation support rods (11, 12).

The tapered roller bearing 13 has a structure in which the rotating shaft 31 of the screen drum 30 is fixed by the rotating structure of the tapered roller 13b through the rolling of the tapered roller 13b so that the load applied to the inner ring by the screen drum And has a characteristic of uniformly dispersing the outer ring through the tapered roller.

In the present embodiment, the extension supporting piece 13c-a is formed on one surface of the inner ring 13c of the tapered roller bearing 13 having such a characteristic, and the rotation shaft 31 passing through the inner ring 13c is provided with the inner ring 13c The inner ring 13c of the tapered roller bearing 13 and the inner peripheral surface of the rotary shaft 31 are provided with a supporting bush 31b having a supporting piece 31b- So that the supporting state of the surface is formed through the mutually-contacted support pieces 13c-a and 31b-a.

Therefore, the rotation shaft 31 of the screen drum 30 and the tapered roller bearing 13 form a stable supporting state through the supporting pieces 13c-a and 31b-a which are in close contact with each other.

The inner ring 13c of the tapered roller bearing 13 which stably supports the rotary shaft 31 is inclined to the inner wall of the outer ring 13a through the tapered rollers 13b, The inner ring 13c of the tapered roller bearing 13 may be damaged by the load applied to the tapered roller bearing 13 or the inner ring 13c may be prevented from being detached or broken from the tapered roller bearing 13. [

Thus, the present invention provides a tapered roller bearing that stably disperses the load of the screen drum and a stable support through a support piece formed between the inner ring of the tapered roller bearing and the rotary shaft to stably support the screen drum, So that breakage or deformation of the tapered roller bearing is prevented.

In addition, in the present invention, the circulation structure of the hot air supplied into the drying furnace 20 and the screen drum 30 is improved through the hot air 40, and the rotating shaft 31 of the screen drum 30 is fixed, The hot wind which is discharged through the hot air 40 into the screen drum 30 and the drying furnace 20 is uniformly diffused in the screen drum 30 so that the dried sludge or the fine aggregate can be dried quickly do.

For this, in the present embodiment, as shown in FIGS. 5 and 6, a conical diffusion thermal insulating cover 14 is installed on a rotary support 11 facing the hot air 40, The tapered roller bearing 13 is prevented from reaching the rotary support 11 directly to prevent the deterioration of the tapered roller bearing 13 mounted on the rotary support 11 and by the conical diffusion thermal insulating cover 14, The heat discharged to the screen drum 30 forms a vortex so as to be injected deeper into the drying oven and the screen drum.

6B, when the guide vanes 14a are disposed on the outer wall of the diffusion heat insulating cover 14 formed as a conical shape, the guide blades 14a guide the hot wind blown into the drying furnace 20 and the screen drum 30 A more uniform vortex formation is possible.

When the coil spring 15 is disposed between the conical diffusion thermal insulating cover 14 and the rotary support 11, the conical diffusion thermal insulating cover 14 and the rotary support 11 are mutually engaged by the coil spring 15. [ The diffusion angle of the hot air through the conical diffusion heat insulating cover 14 is arbitrarily changed by the elastic deformation of the coil spring 15 so that the hot air is uniformly diffused in the screen drum 30 as a whole do.

5 and 7, one or more diffusion caps 33 may be disposed on the rotary shaft 31 passing through the screen drum 30 and the diffusion caps 33 may be disposed on the screen drum 30 30 to the inner wall of the screen drum 30 where the construction sludge or the fine aggregate is located.

The diffusion cap 33 is conically shaped like the conical diffusion heat insulating cover 14 and allows hot air to be introduced into the screen drum 30 through the hot air 40 to diffuse to the inner wall of the screen drum 30.

In the present embodiment, the diffusion cap 33 is provided on the rotary shaft 31 in a forward and backward movement structure, and the diffusion cap 33 is integrally formed with the tongue spring 34, The hot air flowing into the screen drum 30 is diffused outwardly at various angles and portions while the diffusion cap is repeatedly moved forward and backward by the pressure of the hot air flowing in.

Therefore, the apparatus 1 for drying a sludge and fine aggregate according to the present embodiment is characterized in that the rotary shaft 31 of the screen drum 30 is fixed by a rotating structure by the conical diffusion heat insulating cover 14 and the diffusion cap 33 And the hot air is uniformly diffused and supplied to the construction sludge or fine aggregate. Therefore, it is possible to rapidly dry the construction sludge or fine aggregate through the hot wind.

1. Dewatering and drying equipment for construction sludge and fine aggregate
10. Support frame 11. Rotation support
12. Tilt roller bearing 13. Tapered roller bearing
13a. Outer ring 13b. Taper roller
13c. Inner ring 13c-a. Extended support piece
14. Diffusion insulation cover 14a. Guide wing
15. Coil spring
20. Drying furnace 21. Collector
30. Screen drum 31. Rotary shaft
31a. Support arm
33. Diffusion cap 34. Tangential spring
40. Fans
50. Driving motor 60. Hopper
61. Outlet 62. Throttle
63. Adjustment bolt 64. Fixing nut
70. Supply conveyor

Claims (4)

A support frame having pivotal supports on both sides thereof;
A hollow drying furnace installed in the support frame and having a collection port formed at a lower portion thereof;
A hot air blower for blowing hot air to one side of the hollow drying furnace;
A hollow screen drum provided with a plurality of drain holes formed on an outer wall thereof in a state where the end portions of the rotary shaft are fixed to the rotary support rods of the support frame by pivoting structures so as to be laid down in a drying furnace; And
And a driving motor for rotating the screen drum in one direction by applying a rotational force to the rotating shaft of the screen drum,
The construction sludge or fine aggregate charged into the screen drum is configured to discharge moisture through the drain holes while being stirred by the rotation of the screen drum and to be dried by hot air provided from the hot wind,
A tapered roller bearing in which a tapered roller is disposed is inserted between the outer ring and the inner ring into which the end of the rotating shaft is inserted,
A support bush having a support piece of the inner ring and a support piece to be supported is provided on a rotary shaft passing through the inner ring,
Wherein the rotation shaft of the screen drum is stably supported on an inner ring supported by a tapered roller through a support piece of a supporting bush by a tapered structure on the outer ring. The screen drum according to claim 1, wherein the screen drum is loaded with a construction sludge or fine aggregate by a supply conveyor for discharging the construction sludge or fine aggregate discharged through the discharge opening of the hopper, and a throttle plate for regulating the opening amount of the discharge opening It is installed in the forward and backward structure,
Wherein the amount of the sludge or the fine aggregate to be supplied to the screen drum is controlled by controlling the amount of the discharge port formed in the hopper through the throttle plate. delete The heat exchanger according to claim 1, wherein a conical diffusion heat insulating cover is provided on a rotating support base facing the hot air,
Wherein the tapered roller bearing is prevented from deteriorating due to the hot air and the hot air discharged to the screen drum and the drying furnace is evenly diffused through the hot air.

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