KR101737068B1 - Low-temperature drier for sludge - Google Patents

Low-temperature drier for sludge Download PDF

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Publication number
KR101737068B1
KR101737068B1 KR1020150063903A KR20150063903A KR101737068B1 KR 101737068 B1 KR101737068 B1 KR 101737068B1 KR 1020150063903 A KR1020150063903 A KR 1020150063903A KR 20150063903 A KR20150063903 A KR 20150063903A KR 101737068 B1 KR101737068 B1 KR 101737068B1
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South Korea
Prior art keywords
sludge
metal
hopper
conveyor
drying
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KR1020150063903A
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Korean (ko)
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KR20160131464A (en
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황명회
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황명회
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Priority to KR1020150063903A priority Critical patent/KR101737068B1/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Microbiology (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Treatment Of Sludge (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The present invention relates to a sludge drying apparatus, which comprises a hopper for storing dewatered sludge, a feed pump for feeding sludge stored in the hopper, a drying chamber for drying the sludge to be pneumatically fed by the upper and lower conveyors, The present invention relates to a low-temperature hot air drying apparatus for sludge, comprising a burner for supplying hot air to a lower portion of the drying chamber, and a waste heat discharging means for discharging water vapor together with hot air to the upper portion of the drying chamber. A metal separator for filtering the metal in the sludge remaining in the sludge while transferring the sludge discharged from the sludge; And a crusher for crushing contaminants having a predetermined size or more while passing the sludge discharged from the metal separator. Therefore, it is possible to remove the contaminants contained in the sludge supplied to the molding machine after dehydration, It is possible to provide a low-temperature sludge drying apparatus having a contaminant removing means capable of preventing a high-

Figure R1020150063903

Description

[0001] The present invention relates to a low-temperature drier for sludge,

The present invention relates to a sludge drying apparatus using a low temperature, and more particularly to a sludge drying apparatus using a low temperature sludge, which comprises a dewatering treatment device for removing contaminants contained in sludge supplied to a molding machine, Drying apparatus.

In general, a sludge drying apparatus for drying sludge generated in a sewage treatment apparatus has been proposed in various forms. Among them, as shown in FIG. 1, there are provided a hopper 10 for storing dehydrated sludge, A transfer pump 20 for transferring the stored sludge, a drying chamber 30 for drying the sludge to be pneumatically conveyed by using the upper and lower conveyors in stages and drying the heated sludge by hot air flowing into the inside thereof, 40), and waste heat discharging means (50) for discharging steam together with hot air to the upper part of the drying chamber. At this time, the molding machine is provided with the sludge being extruded at right and left constant intervals, reciprocating left and right, and being continuously placed in a zigzag form on the upper conveyor in the drying chamber.

However, according to the conventional sludge drying apparatus, the sludge stored in the hopper contains considerable amounts of impurities such as metal, glass, wood, stone pieces, etc. Therefore, in the process of extruding the sludge through a molding machine, There is a problem in that it can not be discharged.

In this case, if the clogged nozzle is not pierced, the treatment efficiency for drying the sludge will be lowered. In order to drill the duct, it is necessary not only to stop the operation of the entire drying apparatus, but also to lower the temperature There is a problem that the processing efficiency is lowered because the drilling operation can be performed later.

The present invention is intended to provide a low-temperature sludge drying apparatus having a dirt removing means for removing dirt contained in sludge supplied to a molding machine after dehydration to prevent clogging of nozzles of a molding machine.

The present invention seeks to provide a low-temperature sludge drying apparatus having a contaminant removing means for separately separating recyclable metal among impurities.

The present invention relates to a sludge drying apparatus, which comprises a hopper for storing dewatered sludge, a feed pump for feeding sludge stored in the hopper, a drying chamber for drying the sludge to be pneumatically fed by the upper and lower conveyors, A burner for supplying hot air to the lower part, and a waste heat discharging unit for discharging water vapor together with hot air to the upper part of the drying chamber,

A metal separator provided between the hopper and the transfer pump for filtering the metal among the contaminants remaining in the sludge while transferring the sludge discharged from the hopper; And a crusher for crushing the sludge discharged from the metal separator to a predetermined size or larger.

Wherein the metal sorter comprises a conveyor for conveying the sludge, the belt being formed of a magnet material so that the metal is attached thereto; A scatter installed at an upper portion of the conveyor for scattering the sludge to be transferred so that metal in the sludge is adhered to the surface of the conveyor; And a separation plate installed at a lower portion of the conveyor and scraping off the metal attached to the surface of the return conveyor.

The scatters are formed such that a plurality of rakes scatter the sludge while rotating in a direction opposite to the conveying direction of the conveyor.

The crusher is formed such that a pair of crushing rollers having a plurality of crushing protrusions formed on the outer surface thereof rotate together with each other.

The crusher is provided with a pair of crushing rollers arranged up and down step by step, and a gap between a pair of crushing rollers is formed smaller toward the bottom.

According to the low temperature sludge drying apparatus having the contaminant removing means of the present invention, it is possible to prevent the clogging of the nozzles of the molding machine by removing the contaminants contained in the sludge supplied to the molding machine after dehydration treatment, And the inconvenience due to maintenance and repair is reduced.

According to the low-temperature sludge drying apparatus provided with the contaminant removing means of the present invention, the metal is separately separated from the sludge and recycled, thereby achieving a more practical effect in terms of recycling of resources.

1 is a schematic view showing a conventional low temperature sludge drying apparatus.
2 is a view showing a low-temperature sludge drying apparatus having a contaminant removing unit to which the present invention is applied.
3 is a block diagram showing a contaminant removing means of the low temperature sludge drying apparatus to which the present invention is applied.
FIG. 4 is an explanatory view showing a pulverizer of a low temperature sludge drying apparatus to which the present invention is applied; FIG.

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

2 to 4, the low temperature sludge drying apparatus having the contaminant removing means of the present invention is installed between the hopper 10 and the feed pump 20, and is disposed in the sludge while transferring the sludge discharged from the hopper A metal separator (100) for filtering the metal among the remaining contaminants, and a crusher (200) for crushing the contaminants of a predetermined size or larger while passing the sludge discharged from the metal separator.

As shown in FIG. 2, the sludge drying apparatus according to the present invention includes a hopper 10 for storing dehydrated sludge, a hopper 10 for storing dehydrated sludge, A transfer pump 20 for transferring the stored sludge, a drying chamber 30 for drying the sludge to be pneumatically conveyed by using the upper and lower conveyors in stages and drying the heated sludge by hot air flowing into the inside thereof, 40), and waste heat discharging means (50) for discharging steam together with hot air to the upper part of the drying chamber.

As shown in the drawing, the drying chamber 30 is divided into a plurality of spaces for efficient drying of the sludge, and each of the spaces is supplied with heat to perform drying step by step, So that the driving means including the connection pipe of the present invention is not damaged by heat while minimizing the heat loss. In addition, a sensor for sensing heat or a sensor for sensing humidity may be installed in each space of the drying chamber 30 so that hot air can be supplied in an optimum state.

The waste heat discharging means 50 includes a condenser for cooling and discharging hot air, and has a structure for recycling a part of waste heat discharged to the drying chamber 30.

The metal separator (100) is installed between the hopper (10) and the transfer pump (20) and filters the metal among the contaminants remaining in the sludge while transferring the sludge discharged from the hopper. It is preferable to separate the metals separately in terms of recycling of resources. However, even if the metal passes through the crusher 200 to be described later, it is preferable to separate the metals because the nozzles of the molding machine are blocked, .

As shown in FIG. 3, the metal separator 100 includes a conveyor 110 for conveying the sludge as shown in FIG. 3, the belt being made of a magnet material so that metal is adhered to the conveyor 110, A scatter 120 for scattering sludge so that metal in the sludge is adhered to the surface of the conveyor, and a separator 130 installed at a lower portion of the conveyor for scraping off metal attached to the surface of the return conveyor .

When forming the belt, the conveyor 110 may be directly formed into a magnet and connected to each other. However, it is preferable that the conveyor 110 is formed by attaching a magnet to the surface of each cell formed of a metal material in a plate form.

The scatters 120 are preferably formed as a plurality of rakes to rotate the sludge in a direction opposite to the conveying direction of the conveyor 110 to disturb the sludge.

The separating plate 130 may be formed in the form of a knife in the vicinity of the belt of the conveyor 110 so that when the metal is pushed and the magnetic force weakens, the separating plate 130 itself falls off.

The crusher 200 crushes contaminants having a predetermined size or more while passing sludge discharged from the metal separator 100. At this time, the size of the crushed contaminants should be smaller than the inner diameter of the nozzle of the molding machine for finely drawing out the sludge.

The crusher 200 is preferably formed as a pair of crushing rollers 210 having a plurality of crushing protrusions 220 formed on the outer surface thereof to rotate with each other. That is, the pair of crushing rollers 210 are driven close to each other to crush contaminants passing therebetween. At this time, the crushing protrusions 220 are formed on the outer surface of the crushing roller 210, , The impurities can be crushed and discharged more smoothly without stagnation.

The crusher 200 has a pair of crushing rollers 210 installed vertically in the up and down direction, and a gap between the pair of crushing rollers 210 is reduced toward the bottom. Therefore, in this configuration, the large sized impurities are gradually adhered and crushed in the process of passing from the upper part to the lower part. At this time, as shown in FIG. 4, the pair of right and left crushing rollers are rotated by meshing with each other by means of gears, and the crushing rollers are linked by a chain or the like so as to be interlocked.

According to the present invention having such a structure, it is possible to prevent the clogging of nozzles in the molding machine by removing the contaminants contained in the sludge supplied to the molding machine after dehydration treatment, thereby improving the treatment efficiency of the sludge through stable operation, It is possible to reduce the incidence.

In addition, metal is separately separated from the sludge and recycled, which is more practical in terms of resource recycling.

10: Hopper 20: Feed pump
30: drying chamber 40: burner
50: waste heat discharging means
100: Metal separator 110: Conveyor
120: scatterer 130: separator plate
200: crusher 210: crushing roller
220: crushing projection

Claims (5)

A hopper for storing the dewatered sludge, a feed pump for feeding the sludge stored in the hopper, a drying chamber for drying the pressurized sludge by hot air introduced into the drying hopper while transferring the sludge by pressure using the upper and lower conveyors therein, A waste heat discharging means for discharging water vapor together with hot air to the upper portion of the drying chamber; A metal separator provided between the hopper and the transfer pump for filtering the metal among the contaminants remaining in the sludge while transferring the sludge discharged from the hopper; And a crusher for crushing contaminants of a predetermined size or larger while allowing sludge discharged from the metal separator to pass therethrough, the apparatus comprising:
Wherein the metal sorter comprises a conveyor for conveying the sludge, the belt being formed of a magnet material so that the metal is attached thereto; A scatter installed at an upper portion of the conveyor for scattering the sludge to be transferred to allow the metal in the sludge to adhere to the surface of the conveyor; And a separating plate installed at a lower portion of the conveyor for scraping down metal attached to a surface of a returning conveyor, wherein the scatters are formed such that a plurality of rake rotates in a direction opposite to the conveying direction of the conveyor to disturb the sludge On the other hand,
The crusher is formed so that a pair of crushing rollers having a plurality of crushing protrusions formed on the outer surface thereof are rotated so as to interlock with each other. Each of the pair of crushing rollers is vertically and vertically arranged. Wherein the low-temperature sludge drying unit includes a low-temperature sludge removing unit. delete delete delete delete
KR1020150063903A 2015-05-07 2015-05-07 Low-temperature drier for sludge KR101737068B1 (en)

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KR1020150063903A KR101737068B1 (en) 2015-05-07 2015-05-07 Low-temperature drier for sludge

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KR1020150063903A KR101737068B1 (en) 2015-05-07 2015-05-07 Low-temperature drier for sludge

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KR101737068B1 true KR101737068B1 (en) 2017-05-17

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110548595B (en) * 2019-08-28 2021-05-25 章庆宁 Metal collection device among building rubbish
CN113477310A (en) * 2021-06-17 2021-10-08 三峡大学 Air drying and grinding integrated device and method for soil sample
CN115283071B (en) * 2022-09-20 2023-03-10 山东西海建设集团有限公司 Construction waste crushing device and using method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100863476B1 (en) * 2008-01-09 2008-10-16 주식회사 대한테크 Dryer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100863476B1 (en) * 2008-01-09 2008-10-16 주식회사 대한테크 Dryer

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