KR20090033575A - Transfer conveyor for loss in sludge quantity - Google Patents

Abstract

A sludge decrement transfer conveyor is provided to prevent the soil or the marine from being polluted even if a sludge cake is buried under the ground or spoiled to the marine. A sludge decrement transfer conveyor comprises a body(10) and a transfer screw(40). The top of the body is open. A sludge supply hopper(11) is installed at one side of the upper part of the body. A cake vent is placed in the bottom of the other side of the upper part of the body. While being installed inside the body and rotating with the torque of a drive motor, the transfer screw transfers the sludge. A plurality of through-hole(10a) for dehydration is formed in the body. A body washing device(50) is installed in the bottom side of the body in order to wash the sludge stuck between a through-holes for dehydration. The body washing device has a reversion motor(51), a one side lever(52) connected to an axis of the reversing motor and normal motor, and the other side lever(55) pivotally connected to an axis pin(53a) installed at the body. A pipe(53) for the washing is connected to the bottom part of the other side lever and one side lever.

Description

Sludge Reduction Transport Conveyor {TRANSFER CONVEYOR FOR LOSS IN SLUDGE QUANTITY}

The present invention relates to a conveyor for reducing and transporting sludge generated from food and sewage treatment plants, and more particularly, to form a plurality of dewatering holes in the fuselage, and to clean the sludge caught in the dewatering holes. By using a screwless conveying screw, the screw for conveying the sludge effectively dehydrates water from the sludge to be transported, transfers it cleanly without leaving sludge on the lower surface of the fuselage, and also cleans the through hole so that it can be smoothly dehydrated at the next use. It relates to a sludge reduction conveying conveyor for reducing the sludge due to the action.

Sewage refers to household sewage from kitchens, bathhouses and flush toilets, public sewage from public facilities, buildings, factory wastewater from factories and workplaces, and rainwater from urban areas.

The sewage is discharged through the sewage pipe by the drainage system, and the food and sewage treatment plant, which is the facility installed at the end of the sewage pipe, is treated with the last treatment of harmful substances or contaminants in the sewage by the treatment facility. In order to preserve the water quality in public waters, sewage must be purified and discharged to the standards set forth in the Water Pollution Control Act, the City, Ordinance, etc.

The sewage is filtered in the process of food and sewage treatment to filter out the sludge as a solid, and the sludge is transferred to the next treatment site. Pollutants dissolved in water are usually purified by microorganisms and made into clean water and discharged.

As such, the sludge generated during the sewage treatment in food and sewage treatment plants is transferred to another place by a conveyor, and a weight loss conveying conveyor using a screw is mainly used.

The sludge is directly landfilled in a waste landfill or incinerated by installing a sludge incinerator or dumped at sea.

The method of directly filling the sludge in the waste landfill is the most inexpensive way to treat the sludge, but it is very difficult to secure the landfill and the sludge has a high water content. Many problems have occurred such as problems and secondary pollution caused around landfills such as groundwater contamination of soil.

The incineration method requires a separate site to secure a separate site for incineration of sludge, installs a sludge-only incinerator, and requires a separate person and requires a large budget.

The method of dumping sludge into the ocean is not the same problem as the method of landfill in the waste landfill or incineration of the sludge, but there is a problem that can pollute the ocean because the water content of the sludge is high.

Therefore, it is preferable that the sludge lowers the water content below a certain level and reduces the weight of the sludge, thereby preventing groundwater contamination of the soil during landfilling and preventing marine pollution in the case of ocean dumping.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to perform a dehydration in the course of transporting sludge supplied from food and sewage treatment plants to form a sludge cake having a low water content below a certain level. The present invention provides a sludge reduction conveying conveyor capable of preventing soil or the ocean from being contaminated even when the cake is embedded or dumped in the ocean.

Sludge reduction transport conveyor of the present invention for achieving the above object is the upper body is open and the sludge supply hopper is installed on one side of the upper portion and the cake outlet is formed on the bottom of the other side, and installed inside the body In the sludge reduction conveying conveyor comprising a conveying screw for transporting the sludge while rotating by the rotational force of the drive motor, a plurality of dewatering through-holes are formed in the body, to clean the sludge stuck in the dewatering through-holes Characterized in that the fuselage washing device is configured on the lower side of the fuselage.

In the sludge reduction conveying conveyor of the present invention, the fuselage washing apparatus further includes a forward and reverse rotation motor in which the shaft is reciprocated in left and right directions, one lever connected to an upper end of the forward and reverse rotation motor shaft, and an upper end portion. The other lever is rotatably connected to the shaft pin installed in the body, and both ends are connected to the lower end of the one lever and the other lever, respectively, and the upper side comprises a washing pipe having a predetermined interval in the longitudinal direction in the washing water injection hole It features.

The sludge reduction conveying conveyor of the present invention is further characterized in that the conveying screws are shaftless screws, each of which is not constituted with a shaft, and two of which are arranged in parallel.

The sludge reduction conveyance conveyor of this invention is further characterized by the bottom face of the said fuselage being formed in "(ω)" shape so that the bottom part of the said both conveying screws may be wrapped, respectively.

The sludge reduction conveying conveyor of the present invention is further characterized in that the diameter of the dewatering through holes of the fuselage is larger than that of the left part of the fuselage.

As described above, in the sludge reduction conveying conveyor according to the present invention, since a plurality of dewatering holes are formed in the fuselage to which the sludge is conveyed, dehydration is performed in the process of conveying the sludge, and each of the conveying screws on both sides constitutes a shaft. Since the bottom of the fuselage is formed of an unscrewed screw and the bottom surface of the fuselage is formed in a "ω" shape so as to contact the bottoms of the two transfer screws, the sludge to be conveyed is cleanly transferred without leaving the fuselage and the sludge stuck in the dehydration holes. Since the washing is performed by the fuselage washing device installed on the lower side of the fuselage, the dehydration action is carried out without clogging through the holes. Accordingly, the sludge is effectively dehydrated during the transfer process, so that the yield is less than a certain level. The dumping does not pollute the soil or the ocean.

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

1 is a front view of a sludge reduction conveying conveyor according to the present invention, Figure 2 is a plan view of a sludge reduction conveying conveyor according to the present invention, Figure 3 is a drive motor and a sludge feed hopper of the present invention of FIG. 4 is a cross-sectional view taken along line AA, and FIG. 4 is a right side view of the sludge reduction feed conveyor without the forward and reverse rotation motor and the drip pan of the present invention.

As shown, the sludge reduction conveying conveyor of the present invention is installed in the body 10, the upper body is open and formed in one direction elongated, the sludge while being rotated by the drive motor 20 is installed inside the body (10) Conveying screw 40 for conveying, is composed of a fuselage washing device 50 configured to clean the sludge stuck in the dehydration through-hole (10a) of the fuselage (10).

The body 10 is open at the top, and the dewatering through holes 10a of a predetermined size are formed at regular intervals so that the water, which is filtrate, is filtered out of the sludge conveyed to the wall including the bottom (Fig. 1). 2, for convenience of illustration, the dehydration through-holes 10a are not displayed on the entire wall including the bottom of the fuselage 10, and only a part of the fuselage 10 is marked for dehydration through-holes 10a.) .

The size of the dewatering through-hole (10a) is larger than the dewatering through-hole (10a) formed on the left side of the body 10, the dewatering through-hole (10a) formed on the right side of the body 10 is larger, the body ( It is preferable that the diameter of the dehydration through-hole 10a formed in the left part of 10) is 3 mm, and the diameter of the dehydration through-hole 10a formed in the right part of the fuselage 10 is 4 mm.

The reason why the size of the dewatering through hole (10a) formed by different from each other is that the sludge is transported by the transfer screw 40 in the fuselage 10, the moisture does not come out by the high pressure, but moisture naturally falls out by gravity Because it is structured to come out.

That is, since the state of the sludge supplied from the sludge supply hopper 11 and started to be transported by the conveying screw 40 contains a lot of moisture, the right part of the body 10 so that a lot of moisture can be released correspondingly. The dehydration through-hole (10a) formed in the large size, and the sludge continues to be transported to the left to gradually become a sludge in a state of less water, so the amount of water escaped from such sludge is a small amount corresponding to the fuselage ( This is because even if the size of the dewatering through hole (10a) formed on the left side of 10) is smaller than the size of the dewatering through hole (10a) on the right side, the water can be smoothly removed from the sludge.

As shown in FIG. 1, the fuselage 10 is coupled to each other by the fastening bolts corresponding to the flanges 13 of the four parts divided from each other, and the open upper end of the fuselage 10 is left, The upper end of the right wall is bent in the horizontal direction and is coupled to each other by a fastening bolt with the lower part of the channel provided on the upper side thereof.

The body 10 may have strength that is not bent by the flange 13.

The sludge supply hopper 11 is fixedly installed in the upper right side of the fuselage 10, and the cake outlet 12 in which the sludge cake is discharged is formed in the lower left of the fuselage 10. As shown in FIG.

The bottom part of the fuselage 10 is formed in the shape of "ω" in cross section. As such, the reason why the bottom of the body 10 is formed in the shape of "ω" is that the sludge is not in contact with the bottom of the bottom of the body 10 when the sludge is transferred by the feed screw 40 in the body 10. This is to allow the sludge to be transported without leaving the lower surface of the body (10).

1 and 2, the transfer screw 40 is a shaftless transfer screw without a shaft, two transfer screws 40 are installed in parallel to each other.

Since the transfer screw 40 is shaftless as shown in FIG. 3, the transfer screw 40 is installed in contact with the lower inner surface of the body 10 by its own weight. Therefore, the sludge is conveyed without remaining on the lower surface of the body 10, it is possible to convey a large amount of sludge as the shaft is not formed.

The two sides of the transfer screw 40 is a pair of chain sprockets 21 of both sides fixed to the shaft of the drive motor 20 and each of the pair of chain sprockets 41 of both sides connected to the chain 30 Are each bound to

1 and 3, the fuselage washing device 50 is a lower portion of the fuselage 10, the washing pipe 53 in the longitudinal direction of the fuselage 10, the levers 52, 55 on both sides. It is fixedly attached to).

The upper end of the one-side lever 52 provided with one end of the washing pipe 53 fixed to the lower part is fixed to the shaft of the forward and reverse rotation motor 51 which constantly rotates the washing pipe 53 to the left and right. The upper end part of the said other lever 55 provided with the other end part of the washing pipe 53 fixed to the lower part is rotatably connected to the axial pin 54 provided in the lower end part of the flange 13. As shown in FIG.

In the central part of the upper surface of the washing pipe 53, washing water spray holes 53a are formed at regular intervals in the longitudinal direction to spray washing water toward the respective dewatering through holes 10a of the body 10.

Each of the washing water injection holes 53a may be provided with nozzles.

Drip pan (60) shown as an imaginary line is to receive the water generated in the washing process by the sewage or fuselage washing device 50, which is water that is removed as the sludge is dehydrated, the lower surface Silver is located under the washing pipe 53, and the side is provided so that it may be covered to the upper side of the fuselage.

In the drawings, reference numeral 42 denotes a seal block unit, 43 and 56 bearings, 44 a chain cover, and 70 a drain valve.

The sludge loss transfer conveyor of the present invention configured as described above acts as follows.

The sludge processed and transported from the sewage treatment plant is supplied to the right side of the body 10 through the sludge supply hopper 11. When the operation switch of the drive motor 20 is turned on, the shaft of the drive motor 20 is turned on. While rotating, the pair of chain sprockets 21 rotates.

As the pair of chain sprockets 21 rotates, two chain sprockets 41 connected to each other by the chain 30 to the chain sprocket 21 are rotated, and two chain sprockets 41 are respectively installed. The axis will rotate.

As each shaft of the two chain sprockets 41 rotates, the transfer screws 40 fixed to the two shafts respectively rotate, and the sludge supplied through the sludge supply hopper 11 is rotated. It is conveyed while being pressed in the left direction in the (10).

Moisture contained in the sludge in the process of the sludge is transferred to the left in the fuselage 10 is discharged downward through the dewatering through holes (10a) formed in the fuselage 10 at regular intervals and a drip pan Falls within 60.

On the other hand, the sludge cake is removed to the left in the fuselage 10 is discharged through the cake outlet 12 is dropped into a separate cake roll box (not shown).

As described above, the sludge conveyed and supplied from the sewage treatment plant is dehydrated by the dehydration through-holes 10a of the fuselage 10 in the course of being transferred inside the fuselage 10, and then the process of being accommodated in the cake roll box is continuously performed. Is done.

In addition, the dehydration through-hole (10a) is because the right side of the fuselage 10 is formed large and small on the left side can be smoothly escape moisture.

That is, immediately after the sludge enters the fuselage 10 through the sludge feed hopper 11, a large amount of water coming out of the sludge smoothly passes through the large dewatering through hole 10a of the right side of the fuselage 10. Exit

And, as the sludge is transported to the left side in the fuselage 10, the water content of the sludge is gradually reduced. Even through the small size of the dehydration through-hole (10a) of the left side of the fuselage 10, moisture can escape smoothly, Due to the size of the through hole 10a, the sludge does not go out unnecessarily.

Since the conveying screw 40 is a shaftless conveying screw 40, the amount of sludge can be processed as much as the shaft is not formed, and the sludge does not stick to the surface of the conveying screw 40, thereby smoothly conveying the sludge. Will be done.

Since the bottom of the body 10 is formed in a "ω" shape and the body 10 and the conveying screw 40 are in contact with each other, the bottom of the body 10 can be transported without leaving sludge. It is not blocked in 10a), and dehydration is performed efficiently.

On the other hand, if the sludge is transported by the feed screw 40 in the fuselage 10 at the same time the process of dehydration continues for a long time, the sludge is caught in the dewatering through-hole (10a) formed in the fuselage (10). In this case, the moisture does not smoothly go through the drip pan 60 through the sludge dehydration is not made smoothly.

In this case, after stopping the operation of the sludge reduction feed conveyor of the present invention, by operating the forward and reverse rotation motor 51 by turning on the operation switch of the forward and reverse rotation motor 51, the shaft of the forward and reverse rotation motor 51 The pipe 53 for washing rotates left and right, while reciprocatingly rotating left and right.

Therefore, the washing water is sprayed through the washing water injection hole 53a of the washing pipe 53 to cleanly remove sludge caught in the through holes 10a formed in the lower part of the fuselage 10. Such washing of the fuselage 10 is preferably carried out whenever the operation of the entire sludge treatment apparatus is stopped.

The liquid, which is the filtrate of dehydration through the above process, is received in the drip pan 60 and then opens the drain valve 70 to be sent back to the sewage treatment plant or enters the concentration tank.

The sludge cake accommodated in the cake roll box is a cake having a water content below a certain level, so that the collected cake is embedded in soil or dumped in the ocean.

1 is a front view of a sludge reduction transport conveyor according to the present invention.

2 is a plan view of the sludge reduction transport conveyor according to the present invention,

3 is a cross-sectional view taken along the line A-A of FIG. 1 with the illustration of the drive motor and sludge feed hopper of the present invention omitted;

Figure 4 is a right side view of the sludge reduction feed conveyor without the illustration of the forward and reverse rotation motor and the drip pan of the present invention.

<Explanation of symbols for the main parts of the drawings>

10; Fuselage 10a: Dewatering Through Hole

11: sludge feed hopper 12: cake outlet

13 flange 20 drive motor

21, 41: chain sprocket 30: chain

40: transfer screw 50: fuselage washing device

51: forward and reverse rotation motor 52, 55: lever

53: washing pipe 53a: washing water jet hole

54: shaft pin 60: drip pan

Claims (5)

The upper part is open and the sludge supply hopper 11 is installed in one side of the upper part, and the cake body outlet 12 is formed in the bottom part of the other part, and it is installed in the inside of the said body 10, and it drives. In the sludge reduction conveying conveyor comprising a conveying screw 40 for conveying the sludge while rotating by the rotational force of the motor 20, A plurality of dewatering holes 10a are formed in the body 10, Sludge reduction transport conveyor, characterized in that the fuselage washing device 50 is configured on the lower side of the fuselage (10) to wash the sludge stuck in the dewatering through-hole (10a). According to claim 1, wherein the fuselage washing device 50 has a forward and reverse rotation motor 51, the shaft is reciprocating in the left and right directions, and one side of the upper end connected to the shaft of the forward and reverse rotation motor 51 Lever 52, the other end of the upper end is rotatably connected to the shaft pin (53) installed in the body 10, and both ends at the lower end of the one lever 52 and the other lever 55, respectively Sludge reduction conveying conveyor, characterized in that it comprises a washing pipe (53) connected to the washing water injection hole (53a) in the longitudinal direction at an upper portion. The sludge reduction conveying conveyor according to claim 1, wherein the conveying screws (40) are shaftless screws, each of which has no shaft, and two are arranged in parallel. The sludge reduction conveying conveyor according to claim 1, wherein a bottom surface of the fuselage (10) is formed in a shape of "ω" so as to respectively surround bottoms of the both side conveying screws (40). The sludge reduction conveying conveyor according to claim 1, wherein the diameter of the dewatering through holes (10a) of the fuselage (10) is larger than the left part of the fuselage (10).

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