KR20230040525A - Dryer of sludge treatment apparatus - Google Patents

Abstract

A dryer of a sludge treatment device according to the present invention firstly transfers dehydrated sludge from a dehydrator onto a bed, spreads the same evenly, distributes the same through a plurality of sludge distribution ports, discharges the same downward, and heats and dries the same through a drying hot plate while secondarily transferring the same, so that a drying time can be shortened compared to a hot air drying method. In addition, drying can be performed over a larger surface, so that drying efficiency can be improved.

Description

Dryer of sludge treatment apparatus {Dryer of sludge treatment apparatus}

The present invention relates to a dryer for a sludge treatment device, and more particularly, to a dryer for a sludge treatment device that can more efficiently dry dehydrated sludge.

In general, in a sewage treatment facility or wastewater treatment facility, sludge, which is a precipitate, is generated during the treatment of sewage or wastewater. Since this sludge contains moisture, it is treated through a dehydration step to separate it from moisture and a drying step to dry the dehydrated sludge.

A conventional drying process is a method of drying sludge by hot air while transporting the sludge through a conveyor. However, this hot air drying method has a problem in that the drying efficiency is low because the drying time is very long.

Republic of Korea Patent No. 10-1836464

An object of the present invention is to provide a dryer of a sludge treatment apparatus capable of improving drying efficiency by shortening the drying time.

The dryer of the sludge treatment apparatus according to the present invention includes a bed including a plurality of sludge distribution ports through which sludge dehydrated in a dehydrator and introduced therein is transferred and the transferred sludge is discharged downwardly at a plurality of locations; a first transport means installed on the bed and transporting the sludge introduced into the sludge input unit in a first transport direction while flattening the sludge on the bed; At the lower side of the bed, a plurality of sludge distribution ports are disposed to correspond to the plurality of sludge distribution ports, and are formed long in a second transport direction inclined downward at a set angle with respect to the first transport direction, and discharged downward through the sludge distribution ports drying hot plates for heating and drying the sludge; and second conveying means disposed opposite to each other on the surfaces of the drying hot plates to transfer the sludge seated on the drying hot plates in the second conveying direction while compressing the sludge.

The bed is formed with a plurality of fixed plates spaced apart from each other at predetermined intervals to form the plurality of sludge distribution ports, disposed between the fixing plates to cover the sludge distribution ports, and rotatably coupled to the fixed plates It includes a plurality of rotating plates that open the sludge distribution port while rotating downward by its own weight.

It is installed in the lower part of the bed so as to be movable forward and backward, and moves to the lower part of the rotary plate when the sludge is transported, supports the lower part of the rotary plate so that the rotary plate does not rotate downward, and returns to the original position when the sludge is discharged, The rotary plate may further include an opening and closing means for opening and closing the rotary plate by allowing the rotary plate to rotate downward by its own weight.

A plurality of support rollers formed to support each lower portion of the plurality of rotating plates, a connection frame connecting the plurality of support rollers, and an actuator for moving the connection frame forward and backward depending on whether the sludge is transported and discharged include

The lower surface of the fixed plate and the lower surface of the rotary plate are coupled by hinges that limit the rotational angle of the rotary plate to a preset angle.

The first conveying unit includes a pair of chains and a scraper coupled between the pair of chains and flattening the sludge on the bed.

The scrapers are provided in plurality at positions spaced apart from each other by a predetermined interval along the conveying direction of the first conveying means.

The second conveying means includes a belt for compressing the sludge between it and the drying hot plate.

In the dryer of the sludge treatment apparatus according to another aspect of the present invention, the sludge dehydrated and introduced in the dehydrator is transported, and a plurality of sludges formed spaced apart from each other at a predetermined interval along the transport direction so that the transported sludge is discharged downward from a plurality of positions. a bed containing spheres; a chain conveyor installed on the bed and including scrapers for transporting the sludge introduced into the sludge input unit in a horizontal direction while flattening the sludge on the bed; At the lower side of the bed, a plurality of sludge distribution holes are arranged to correspond to the plurality of sludge distribution holes, respectively, and are formed long in an inclined direction inclined downward at a set angle with respect to the horizontal direction. Heating the sludge discharged downward through the sludge distribution holes Drying hot plates for drying by drying; belt conveyors disposed opposite to each other on the surfaces of the drying hot plates to transport the sludge seated on the drying hot plates in the inclined direction while compressing the sludge; It is installed at each of the sludge distribution ports to cover the sludge distribution ports when the chain conveyor is operated and the sludge is transported in the horizontal direction, and to open the sludge distribution ports when the chain conveyor stops operating, so that the sludge a distribution port door for discharging; and a control unit controlling operations of the chain conveyor, the belt conveyor, and the distribution port door.

In the dryer of the sludge treatment apparatus according to the present invention, the sludge dehydrated from the dehydrator is firstly transported onto the bed, spread evenly, distributed through a plurality of sludge distribution ports, discharged downward, and then heated and dried through a drying hot plate while transporting it secondarily By doing so, there is an advantage that the drying time can be shortened compared to the hot air drying method.

1 is a perspective view showing a dryer of a sludge treatment apparatus according to an embodiment of the present invention.
2 is a side view showing the dryer of the sludge treatment apparatus according to an embodiment of the present invention.
3 is a perspective view showing a sludge distribution port of a bed of a dryer according to an embodiment of the present invention in an open state.
4 is a perspective view showing a state in which a sludge distribution port of a bed of a dryer according to an embodiment of the present invention is closed.
5 is a perspective view showing a lower surface of a bed of a dryer according to an embodiment of the present invention.
6 is a perspective view showing a first transfer unit of the dryer according to an embodiment of the present invention.
7 is a perspective view illustrating a second transfer means and a drying hot plate of a dryer according to an embodiment of the present invention.
8 is a perspective view showing an opening and closing means according to an embodiment of the present invention.
9 is a side view showing a sludge distribution port opened in the dryer according to an embodiment of the present invention.
10 is a side view showing a state in which the sludge distribution port of the bed of the dryer according to the embodiment of the present invention is closed.

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

1 is a perspective view showing a dryer of a sludge treatment apparatus according to an embodiment of the present invention. 2 is a side view showing the dryer of the sludge treatment apparatus according to an embodiment of the present invention.

1 and 2, the dryer of the sludge treatment apparatus according to an embodiment of the present invention is a device for drying sludge discharged in the form of a sheet after moisture is removed from a dehydrator (not shown). The dehydrator (not shown) will be described as an example of an electric dehydrator.

The dryer includes a bed 30, a first transfer unit 10, a second transfer unit 20, a drying hot plate 40, and an opening/closing unit 50.

3 to 5, the bed 30 is a panel on which the sludge dehydrated in the dehydrator (not shown) is spread and transported. The bed 30 is disposed long in the first transport direction (A). Here, the first transport direction (A) will be described as an example in the horizontal direction.

The bed 30 includes a sludge input unit 31, a plurality of fixing plates 32, and a plurality of rotating plates 33.

The sludge input part 31 is formed at the right end of the bed 30 and is a part into which the sludge dehydrated in the dehydrator (not shown) is input.

The plurality of fixing plates 32 are panels installed to be spaced apart from each other by a predetermined distance along the first transport direction A. The space between the fixing plates 32 forms a sludge distribution port 35 for discharging sludge downward from the bed 30 . The plurality of fixing plates 32 may be integrally formed through separate connecting rods or frames.

The sludge distribution hole 35 is provided between the fixing plates 32 and is formed smaller than the area of the fixing plates 32, and will be described as an example. However, it is not limited thereto, and the sludge distribution port 35 may be formed as an opening hole in the fixing plate 32, of course.

The plurality of rotating plates 33 are panels rotatably coupled to the fixing plate 32 and formed in a shape covering the sludge distribution port 35 . One side of the lower surface of the rotation plate 33 is coupled to one side of the lower surface of the fixed plate 32 by a hinge 36 . Therefore, the rotating plate 33 serves as a distribution door opening the sludge distribution port 35 while rotating downward by its own weight from the fixed plate 32 . In this embodiment, the rotating plate 33 and the fixing plate 32 have been described as being coupled by the hinge 36, but it is not limited thereto and any coupling member that can be rotatably coupled can be used. do. The opening/closing means 50 for limiting rotation of the rotating plates 33 so that the rotating plates 33 shield the sludge distribution port 35 will be described in detail later.

In this embodiment, it has been described as an example that the rotating plates 33 constituting the bed 30 serve as a distribution door to open and close the sludge distribution port 35, but it is not limited thereto, and the sludge powder It is also possible, of course, that a separate distribution door for opening and closing the volleyball 35 is provided. In addition, various methods such as a sliding door may be applied to the distribution port door in addition to a casement method.

The hinge 36 will be described as an example in which two hinges 36 are coupled to the lower surface of the rotating plate 33 spaced apart from each other by a predetermined distance. The hinge 36 is provided to limit the rotation angle of the rotation plate 33 to a preset angle θ.

The first transport means 10 is installed on the bed 30, and flattens the sludge injected into the sludge input unit 31 on the surface of the bed 30 while transporting it in the first transport direction A let it

Referring to FIG. 6, the first conveying means 10 includes a pair of first and second chains 11 and 12 and a plurality of second chains supporting the first and second chains 11 and 12. As an example, it will be described as a chain conveyor including a plurality of scrapers 15 coupled between the first rotating shafts 13, the first sprockets 14, and the first and second chains 11 and 12. .

The scrapers 15 are provided in plurality at positions spaced at equal intervals along the first and second chains 11 and 12. The scrapers 15 are formed in a rod shape to flatten and spread the sludge on the bed 30. One end of the scraper 15 is coupled to the first chain 11, and the other end is coupled to the second chain 12, and while moving when the first and second chains 11 and 12 rotate, The sludge is leveled.

The second conveying means 20 is disposed to face the surface of the drying hot plate 40, and presses the sludge seated on the drying hot plate 40 in a downwardly inclined second conveying direction B. to transport

Referring to FIG. 7, the second conveying means 20 includes a belt 21 for compressing the sludge, a plurality of second rotational shafts 23 and second sprockets supporting the belt 21 It will be described as an example of a belt conveyor including (24).

The drying hot plate 40 is a heating plate disposed below the bed 30 and formed long in the second conveying direction (B), which is a direction inclined downward at a set angle with respect to the first conveying direction (A). A plurality of drying hot plates 40 are disposed to correspond to the plurality of sludge distribution holes 35, respectively. The drying hot plate 40 is a panel that heats and dries the sludge discharged downward from the sludge distribution port 35 and falls onto the surface, and various methods such as an electric heating method or a heat pump method may be applied.

The inclination angle of the drying hot plate 40 is set equal to the inclination angle of the rotation plate 33 when the rotation plate 33 is rotated at the set angle.

In addition, a bent portion 40a is formed at an upper end of the drying hot plate 40 . The bent portion 40a is bent in a direction inclined backward from the surface of the drying hot plate 40 so that the rotary plate 33 is rotated at the set angle and supports the rotary plate 33 when fully opened. , Leakage of the sludge falling from the sludge distribution port 35 can be prevented.

Referring to FIGS. 8 and 10 , the opening and closing means 50 is installed to move forward and backward from the bottom of the bed 30 to open and close the rotary plate 33 . The opening and closing means 50 is disposed between the bed 30 and the second transfer means 20 .

The opening/closing means 50 includes a plurality of support rollers 51, a connecting frame 52, and an actuator (not shown).

The plurality of support rollers 51 are formed in a roller shape to support each lower portion of the rotation plates 33 . The support rollers 51 move to the lower part of the rotary plate 33 when the first transport means 10 is operated and support the lower part of the rotary plate 33 so that the rotary plate 33 does not rotate downward, When the operation of the first conveying means 10 is stopped and the sludge is discharged, the rotation plate 33 can be opened and closed by returning to the original position and allowing the rotation plate 33 to rotate downward by its own weight.

The support rollers 51 are rotatably coupled to the connection frame 52 with a rotational shaft 54 . The support rollers 51 are provided in plurality corresponding to the number of the rotating plates 33 . In addition, each of the support rollers 51 may include at least one or more rollers on the rotating shaft 54 .

The connection frame 52 has a rectangular frame shape in which the upper and lower surfaces are opened, and a driving rod 55 connected to the actuator (not shown) is provided at one side.

The actuator (not shown) may be any device capable of moving the connecting frame 52 forward by a preset distance or backward to return to the original position.

In addition, a control unit (not shown) for controlling the operation of the actuators of the first and second transfer means 10 and 20 and the opening and closing means 50 is further included.

The operation of the dryer of the sludge treatment apparatus according to the embodiment of the present invention configured as described above will be described as follows.

First, when sludge is introduced into the dryer from the dehydrator (not shown), the first transfer means 10 is operated.

When the first conveying means 10 is operated, the sludge injected into the sludge inlet 31 is conveyed onto the bed 30 along the first conveying direction A. At this time, the scrapers 15 flatten the sludge so that it spreads evenly on the bed 30.

Referring to FIG. 9 , while the first conveying means 10 is operating, the sludge distribution ports 35 are blocked by the rotating plates 33 .

The control unit (not shown) moves the opening/closing means 50 forward while the first conveying means 10 is operated to position the support rollers 51 at each lower part of the rotating plates 33. . When the support rollers 51 are positioned below each of the rotation plates 33, the support rollers 51 support the lower portions of the rotation plates 33, so that the rotation plates 33 have their own weight. Downward rotation is prevented by Therefore, since the rotating plates 33 shield the sludge distribution ports 35, the sludge is not discharged downward while being transported in the first transport direction A.

When the sludge is spread on the bed 30, the control unit (not shown) stops the operation of the first transfer means 10. The control unit (not shown) operates the first transfer means 10 for a preset time or until the scraper 15 moves by a preset distance. can

When the control unit (not shown) stops the operation of the first transfer unit 10, the second transfer unit 20 operates.

In addition, the controller (not shown) moves the opening/closing means 50 backward when the operation of the first conveying means 10 is stopped, and returns it to its original position.

Referring to FIG. 10, when the opening/closing means 50 moves backward, since the support rollers 51 no longer support each lower portion of the rotating plates 33, the rotating plates 33 lose their own weight. rotates downward by When the rotating plates 33 rotate downward, the sludge distribution ports 35 are opened.

When the sludge distribution holes 35 are opened, the sludge on the bed 30 is discharged downward through the sludge distribution holes 35 . The sludge discharged downward through the sludge distribution port 35 is guided in the second transfer direction B by the rotating plates 33 and the drying hot plate 40 .

The sludge discharged through the sludge distribution ports 35 is introduced between the belt 21 of the second transport means 20 and the drying hot plate 40, compressed by the belt 21, and the drying hot plate ( 40) and dried.

After the sludge spread on the bed 30 is discharged downward from a plurality of positions through a plurality of sludge distribution holes 35, and then heated and dried by the plurality of drying hot plates 40, respectively, the drying time is greatly shortened It can be. In addition, there is an advantage in that a large amount of sludge can be dried.

After all the sludge dried between the second conveying means 20 and the drying hot plate 40 is discharged downward, the controller (not shown) operates the first conveying means 10 again and the second conveying means The means 20 may continuously perform the driving process repeatedly.

The dryer according to the present invention configured as described above first naturally dries the sludge dehydrated from the dehydrator while spreading it evenly on the bed 30 by the first transport means 10. In addition, the drying hot plate ( 40), it can be heated and dried secondarily while being compressed. Therefore, while the drying capacity of the sludge is improved, there is an advantage in that the drying time can be shortened compared to the hot air drying method.

In addition, after the sludge is first spread on the bed 30, it is evenly distributed and spread on the plurality of drying hot plates 40, so that drying can be performed on a wider surface, so drying efficiency can be improved.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

10: first transfer means 15: scraper
20: second transport means 21: belt
30: bed 32: fixing plate
33: rotary plate 35: sludge distribution port
36: hinge 40: dry hot plate
50: opening and closing means 51: support roller
52: connection frame

Claims (9)

a bed including a plurality of sludge distribution ports through which the sludge dehydrated and introduced by the dehydrator is transported and the transported sludge is discharged downward from a plurality of locations;
a first transport means installed on the bed and transporting the sludge introduced into the sludge input unit in a first transport direction while flattening the sludge on the bed;
At the lower side of the bed, a plurality of sludge distribution ports are disposed to correspond to the plurality of sludge distribution ports, and are formed long in a second transport direction inclined downward at a set angle with respect to the first transport direction, and discharged downward through the sludge distribution ports drying hot plates for heating and drying the sludge;
The dryer of the sludge treatment apparatus including second transfer means disposed on surfaces of the drying hot plates to face each other and transporting the sludge seated on the drying hot plates in the second transport direction while compressing the sludge. The method of claim 1,
The bed,
A plurality of fixing plates fixedly installed at a predetermined distance apart from each other to form the plurality of sludge distribution ports, disposed between the fixing plates and formed to cover the sludge distribution ports, and rotatably coupled to the fixing plates by their own weight A dryer of a sludge treatment apparatus including a plurality of rotating plates that open the sludge distribution port while rotating downward. The method of claim 2,
It is installed in the lower part of the bed so as to be movable forward and backward, and moves to the lower part of the rotary plate when the sludge is transported, supports the lower part of the rotary plate so that the rotary plate does not rotate downward, and returns to the original position when the sludge is discharged, The dryer of the sludge treatment apparatus further comprising an opening and closing means for opening and closing the rotating plate by enabling the rotating plate to rotate downward by its own weight. The method of claim 3,
The opening and closing means,
A plurality of support rollers formed to support each lower portion of the plurality of rotation plates;
A connecting frame connecting the plurality of support rollers;
Dryer of the sludge treatment device comprising an actuator for moving the connecting frame forward and backward depending on whether the sludge is transported and discharged. The method of claim 2,
The lower surface of the fixed plate and the lower surface of the rotary plate are coupled by a hinge that limits the rotation angle of the rotary plate to a preset angle. The method of claim 1,
The first transport means,
A dryer of a sludge treatment apparatus, which is a chain conveyor including a pair of chains and a scraper coupled between the pair of chains and flattening the sludge on the bed. The method of claim 6,
The scraper,
Dryers of a sludge treatment device provided with a plurality of sludge treatment devices at positions spaced apart from each other by a predetermined interval along the conveying direction of the first conveying means. The method of claim 1,
The second transport means,
The dryer of the sludge treatment device, which is a belt conveyor including a belt for compressing the sludge between the drying hot plate. A bed including a plurality of sludge distribution ports spaced apart from each other at predetermined intervals along the conveying direction so that the sludge dehydrated in the dehydrator is transported and the transported sludge is discharged downward from a plurality of positions;
a chain conveyor installed on the bed and including scrapers for transporting the sludge introduced into the sludge input unit in a horizontal direction while flattening the sludge on the bed;
At the lower side of the bed, a plurality of sludge distribution holes are arranged to correspond to the plurality of sludge distribution holes, respectively, and are formed long in an inclined direction inclined downward at a set angle with respect to the horizontal direction. Heating the sludge discharged downward through the sludge distribution holes Drying hot plates for drying by drying;
belt conveyors disposed opposite to each other on the surfaces of the drying hot plates to transport the sludge seated on the drying hot plates in the inclined direction while compressing the sludge;
It is installed at each of the sludge distribution ports to cover the sludge distribution ports when the chain conveyor is operated and the sludge is transported in the horizontal direction, and to open the sludge distribution ports when the chain conveyor stops operating, so that the sludge a distribution port door for discharging;
The dryer of the sludge treatment apparatus including a control unit for controlling the operation of the chain conveyor, the belt conveyor, and the distribution port door.

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