KR101618250B1

KR101618250B1 - Dehydration discharge device of sludge

Info

Publication number: KR101618250B1
Application number: KR1020150065391A
Authority: KR
Inventors: 박영철
Original assignee: 주식회사 태현이엔지
Priority date: 2015-05-11
Filing date: 2015-05-11
Publication date: 2016-05-04

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sludge dewatering and discharging apparatus, and more particularly, to a sludge dewatering and discharging apparatus for removing moisture contained in a sludge and discharging the sludge to a dried sludge will be.

Description

[0001] DEHYDRATION DISCHARGE DEVICE OF SLUDGE [0002]

Generally, sludge, which is various kinds of pollutants generated in sewage treatment plant, etc., and various kinds of food waste generated in businesses and homes are decomposed, bad odor is generated severely, polluting water source, and restriction of establishment of a landfill .

It is very difficult to remove such food waste because it contains a large amount of the same vegetable fiber, protein, carbohydrate, calcium, and moisture. When such food waste is buried, the extract from the food waste becomes a groundwater and a water source There is a problem of contaminating them when they are introduced.

In addition, when incinerating, a large amount of energy is required due to incineration, resulting in a problem of requiring a large expense, and a toxic gas such as " dioxin "

Korean Patent Registration No. 10-204249 discloses a kitchen garbage disposal apparatus.

However, such a conventional kitchen garbage disposal apparatus takes a long time to dry, and there is a problem that odor or the like is generated in a state where sludge is stored.

Korean Registered Patent No. 10-204249 (June 15, 1999)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a sludge dewatering and discharging device for removing water contained in sludge, .

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned object, the present invention provides a sewage treatment system comprising: a hopper having an upper and a lower portion opened, an upper portion of which is filled with moisture from the outside, and a sludge discharged therefrom; And an outlet port through which the sludge flowing in from the hopper is formed is formed in the upper rear portion and an outlet port through which the sludge flowing into the lower front portion is formed is formed in the upper rear portion, ; A conveyance screw rotatably fixed to both ends of the guide tube and conveying the sludge flowing into the inlet in the direction of the discharge port in accordance with the rotation; A driving unit for transmitting rotational force to the conveying screw; And a heating unit for heating the sludge to remove moisture contained in the sludge, wherein the conveying screw comprises: a rotating shaft rotatably fixed at both ends of the guide pipe; And a screw connected to an outer side of the rotary shaft and having a plurality of blade pieces repeatedly formed along the longitudinal direction of the rotary shaft.

The apparatus may further include a pressurizing unit including a pair of pressure rollers for pressurizing the sludge introduced into the hopper and separating moisture from the sludge.

The heating unit according to the present invention may include a first heater disposed at a lower portion of the hopper and provided in the guide pipe to remove moisture from the sludge by first heating the sludge discharged from the hopper; And a second heater provided in the guide tube so as to be positioned in front of the first heater, for removing moisture contained in the sludge by secondary heating the sludge passing through the first heater.

The screw according to the present invention is characterized in that the spacing distance between the blades is relatively shorter than the front part of the hopper and the rear part of the screw is located at the lower part of the hopper about the central part between both ends of the rotating shaft, So that moisture is discharged from the sludge.

The apparatus further includes a drain pipe connected to a rear lower side of the guide pipe to communicate with the inside of the guide pipe and to discharge moisture discharged from the sludge to the outside.

The guide pipe according to the present invention is characterized in that it is inclined upward from the rear end portion toward the front end portion.

Further, the present invention is characterized by further comprising a net provided in the guide pipe or the drain pipe to block sludge from being discharged through the drain pipe.

The screw according to the present invention is characterized in that a plurality of shredding blades are provided on the surface.

The conveying screw according to the present invention is characterized in that the conveying screw is disposed at a lower portion of the hopper and is connected to the rotary shaft so as to be positioned between the blade pieces and has a length protruding outward from the rotary shaft, Wherein the plurality of auxiliary blade pieces compress the sludge placed between the blade blade pieces to allow moisture to be discharged from the sludge blades.

The feed screw according to the present invention may further include a plurality of protrusions disposed at a lower portion of the hopper and connected to the rotary shaft so as to be positioned between the blade pieces, And sludge is squeezed so that moisture is discharged from the sludge.

According to the present invention, in the process of discharging the sludge, the moisture contained in the sludge is removed and discharged to the dried sludge, so that the water can be quickly removed.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a front view showing a sludge dewatering and discharging apparatus according to the present invention.
FIG. 2 is a longitudinal sectional view showing a sludge dewatering and discharging apparatus according to the present invention.
3 and 4 are front views showing another example of the transfer screw in the dewatering and discharging device of the sludge according to the present invention.
5 is a front view showing a state in which a conveying screw is provided with a crushing blade in the dewatering and discharging device of the sludge according to the present invention.

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

1 to 5, an apparatus 1 for dewatering and discharging sludge according to the present invention has an upper and a lower portion opened, an undried sludge having moisture from the outside is introduced into the upper portion thereof, An inlet 21 through which the sludge is introduced from the hopper 10 is formed in an upper rear portion of the hopper 10, A guide pipe 20 having a discharge port 22 for discharging the sludge introduced thereinto, a sludge tank 20 rotatably fixed to both ends of the guide pipe 20, A driving unit 40 for transmitting a rotational force to the feed screw 30 and a sludge heating unit for heating the sludge passing through the guide pipe 20, A heating unit 50 for removing moisture .

It is preferable that the hopper 10 has a shape that becomes narrower from the upper part to the lower part.

The guide pipe 20 is positioned at a lower front portion of the guide pipe 20 from the inlet 21 located at the upper rear side in accordance with the rotation of the conveyance screw 30 while the undryed sludge passing through the hopper 10 falls and is accommodated. To the discharge port (22).

Therefore, the front and rear ends of the guide pipe 20 can be understood as the traveling direction of the sludge conveyed from the inlet 21 toward the outlet 22.

The guide tube 20 may have various shapes extending in the directions of the front and rear ends, but it is most preferable that the longitudinal section has a square or circular shape.

As shown in FIG. 2, the dewatering and discharging device 1 of the sludge includes a pair of pressure rollers 61 for pressurizing the sludge introduced into the hopper 10 and primarily separating moisture from the sludge The pressing portion 60 may be provided with a pressing portion.

The pair of pressure rollers 61 are preferably rotatably fixed to the inside of the hopper 10 and the pressing portion 60 includes a driving motor 61 for transmitting rotational force to the pair of pressure rollers 61, (Not shown), and the like.

As shown in FIG. 2, the sludge dewatering and discharging device 1 is connected to the rear lower side of the guide pipe 20 and communicates with the inside of the guide pipe 20. Both ends of the guide pipe 20 are opened, And a drain pipe 70 through which separated water is discharged.

The guide tube 20 may be inclined upward from the rear end toward the front end.

That is, the guide tube 20 may have a predetermined inclination angle C about the imaginary horizontal line B as shown in FIG. 2, and may be inclined upward from the rear end toward the front end. The predetermined inclination angle C is preferably 15 degrees or less.

It can be understood that the water separated and discharged from the sludge can be smoothly discharged to the outside through the drain pipe 70 while flowing along the bottom surface of the guide pipe 20 which is inclined.

As shown in FIG. 2, the sludge dewatering and discharging device 1 is provided in the guide pipe 20 or the drain pipe 70, and the sludge is prevented from being discharged to the drain pipe 70, As shown in FIG.

The net 80 is formed with a plurality of through holes 81 having a size such that the moisture separated and discharged from the sludge is passed while the discharge of the sludge is blocked.

1, the heating unit 50 is disposed at a lower portion of the hopper 10 and is provided in the guide pipe 20 so that the sludge discharged from the hopper 10 is firstly heated, The sludge passing through the first heater 51 is secondarily heated by the first heater 51 and the guide tube 20 to be positioned in front of the first heater 51. [ And a second heater 52 for removing moisture contained in the sludge.

The first and second heaters 51 and 52 may be a hot wire or the like heated by receiving power from the outside.

The driving unit 40 is composed of a general type of driving motor and is connected to the conveying screw 30 at the rear end of the guide pipe 20 and transmits rotational force to the sinking screw 30 according to driving.

As shown in FIGS. 2 to 3, the conveying screw 30 has a rotary shaft 31 rotatably fixed to the front and rear ends of the guide tube 20 at both ends thereof, and a rotary shaft 31 connected to the outer side of the rotary shaft 31 And a screw 32 in which a plurality of blade pieces 33 are repeatedly formed along the longitudinal direction of the rotary shaft 31.

2, a distance A between the blade pieces 33 is set such that a rear portion of the screw 32 adjacent to the inlet 21 around the central portion between both ends of the rotary shaft 31, Can be formed relatively short.

This is to allow the moisture to be smoothly discharged from the sludge as the sludge discharged from the hopper 10 is squeezed by the pressure from the moment the sludge discharged from the hopper 10 is drawn into the rear portion of the conveying screw 30.

3, the feed screw 30 is located at a lower portion of the hopper 10 and is connected to the rotary shaft 31 so as to be positioned between the blade pieces 33, And a plurality of auxiliary blade pieces (34) protruding outward from the blade piece (33) in a shorter length than the blade piece (33).

4, the transfer screw 30 is disposed at a lower portion of the hopper 10 and includes a plurality of projections (not shown) connected to the rotary shaft 31 so as to be positioned between the blade pieces 33 35).

The plurality of auxiliary blade pieces 34 and the plurality of projections 35 are positioned on the rear portion of the feed screw 30 to press the sludge positioned between the blade pieces 33 to smoothly flow moisture from the sludge To be discharged.

The transfer screw 30 may further include a plurality of shredding blades 36 provided on a surface of the screw 32 as shown in FIG.

The plurality of shredding blades 36 prevent the drive unit 40 from being overloaded due to the presence of large and hard foreign substances between the guide pipe 20 and the screw 32.

Accordingly, the dewatering and discharging device 1 of the sludge can smoothly discharge water contained in the sludge by crushing large and hard foreign substances contained in the sludge.

As described above, the present invention is not limited to the above-described embodiment, but may be applied to a sludge dewatering and discharging apparatus according to the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

1: Dewatering and draining device of sludge 10: Hopper
20: guide tube 21: inlet
22: Exhaust port 30: Feed screw
31: rotating shaft 32: screw
33: Day Reorganization 34: Auxiliary Day Reorganization
35: projection 36: crushed blade
40: driving unit 50:
51: first heater 52: second heater
60: pressing portion 61: pressure roller
70: drain pipe 80:
81: Through hole

Claims

A hopper in which an upper portion and a lower portion are opened, an un-dried sludge having moisture from the outside is introduced into the upper portion, and a sludge is discharged to the lower portion;
And an outlet port through which the sludge flowing into the hopper is discharged is formed in a lower front part of the hopper, A guide tube having an upward inclination from the end portion toward the front end portion;
A conveyance screw rotatably fixed at both ends of the guide pipe and conveying the sludge flowing into the inlet in the direction of the discharge port in accordance with the rotation;
A driving unit for transmitting rotational force to the conveying screw;
A heating unit for heating the sludge to remove moisture contained in the sludge;
A pressurizing unit including a pair of pressure rollers for pressurizing the sludge introduced into the hopper and separating moisture from the sludge;
A drain pipe connected to the rear lower side of the guide pipe and communicating with the inside of the guide pipe to allow moisture discharged from the sludge to be discharged to the outside; And
And a net provided in the guide pipe or the drain pipe to block sludge from being discharged through the drain pipe,
The conveying screw,
A rotary shaft rotatably fixed at both ends of the guide tube at both ends thereof;
A screw connected to the outside of the rotating shaft and having a plurality of blade pieces repeatedly formed along a longitudinal direction of the rotating shaft; And
And a plurality of protrusions disposed at a lower portion of the hopper and connected to the rotating shaft so as to be positioned between the blade pieces to allow moisture to be discharged from the sludge while compressing the sludge placed between the blade pieces,
The heating unit includes:
A first heater disposed on the outside of the guide tube so as to be positioned below the hopper and for removing moisture from the sludge by first heating the sludge discharged from the hopper; And
And a second heater disposed on the outside of the guide tube so as to be positioned in front of the first heater and for removing moisture contained in the sludge by secondly heating the sludge passing through the first heater,
The first and second heaters,
And a heat line heated by an external power source.

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