KR101984013B1 - Sludge cake storage Sludge cake for hopper Discharge guide device - Google Patents

Abstract

The present invention provides a sludge cake discharge guide device for a sludge cake storage hopper, for smooth drainage without leakage of a leachate, generated from sludge cake, while quickly discharging sludge cake in a short time without a bridging phenomenon and a rat-holing phenomenon, generated in stored sludge cake, when the sludge cake is discharged through a gate. The sludge cake discharge guide device comprises a split guide plate, and a split guide member. The split guide plate divides sludge cake, brought to a lower portion of an open hole of a sludge cake storage tank, into both sides inside a storage space of a sludge cake storage hopper. The split guide member is connected to the bottom side of the split guide plate to be formed gradually wider toward the gate in a lower portion, has a split inclined plane, inclined in the form corresponding to each inclined plane of both sides of the sludge cake storage hopper, and includes an accommodation space having a blocked bottom side for dividing the storage space into both sides, in which a leachate flows, and for supplying dry air. Therefore, the sludge cake discharge guide device for a sludge cake storage hopper has effects of maximizing discharge efficiency by quickly and smoothly discharging sludge cake from inside a sludge cake storage hopper without leaving any remaining sludge cake, and not polluting the surrounding environment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge cake storage hopper,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage hopper in which a sludge cake is stored, and more particularly, to a storage hopper for storing a sludge cake in a short time period without bridging and rat- The present invention relates to a sludge cake discharging guide apparatus for a sludge cake storing hopper, which can drain water quickly without leakage of leachate generated from a sludge cake.

Generally, raw water or sewage treated in a water purification plant or a wastewater treatment plant contains a large amount of solid components including various organic substances, and these solid components accumulate through sedimentation and filtration during the treatment of water, wastewater, and wastewater , And the accumulation is called a sludge.

Currently, sludge generated through various water treatment processes is mostly landfilled with landfills and buried with general garbage, except that only a part of the sludge is used in agricultural land or used as feed for earthworms.

Thus, a large amount of leachate is generated, and there are problems such as odor due to decay of residual organic matter of the sludge, secondary environmental pollution problem around the landfill such as soil pollution, and so on.

Therefore, it is preferable that the water content of the sludge is as small as possible. Accordingly, the sludge generated through the various processes is generally subjected to a dehydration process, and the dehydrated sludge is stored in a caked state as a sludge cake storage hopper / RTI >

Here, the sludge cake stored in the sludge cake storage hopper is transported to a landfill or the like by a vehicle. Even though most of the sludge cake is dehydrated, most of the moisture is removed, but even in the state where the sludge cake is stored in the sludge cake low- The water content of the sludge cake reaches about 80%, and the water remaining in the sludge cake is leached over time. In other words, since the leachate is generated from the sludge cake temporarily stored after dewatering, there are the following problems in the process of storing the sludge cake in the conventional sludge cake storage hopper.

The sludge cake stored in the conventional sludge cake storage hopper, which is installed for temporarily storing the dehydrated sludge cake before being taken out of the office, contains a lot of water. Therefore, the sludge cake brought into the loading port is stored in the sludge cake storage The amount of the dead space in the sludge cake storage hopper, that is, the storage efficiency, is significantly lowered by being stored in such a form that it is gradually stacked in such a manner that the tower is stacked on the lower side of the inlet port instead of being dispersed evenly in the hopper. There is a problem of knitting.

In addition, the sludge cake storage hopper is discharged from the lower portion of the sludge cake storage hopper through the gate disposed below the sludge cake storage hopper, and the dropped sludge cake is dropped into the loading box of the vehicle. Respectively. The lower gate of the bottom of the sludge cake storage hopper through which the sludge cake is discharged is constituted by a pair of doors opened and closed at both sides and a pair of drive cylinders for driving the pair of doors, respectively.

At this time, a gap is formed at a central portion of the gate so that one side of the pair of doors is in contact with each other. Leakage from the sludge cake is discharged through the gap to contaminate not only the sludge cake hopper but also the bottom of the sludge cake, Since cleaning is required, it is economically costly to clean. Leaked water is a violation of the water quality environmental law and is subject to legal punishment.

After the sludge cake is stored at a predetermined height in the process of storing the sludge cake, the sludge cake is pressurized by the pressure of the stored sludge cake on both sides of the inner side of the sludge cake storage hopper, resulting in bridging on the sludge cake There is a problem that smooth discharge can not be achieved.

In addition, as the doors of the gate are opened and discharged, both sides of the inner side of the sludge cake hopper are squeezed by solidification to cause the sludge cake only in the central portion to be discharged, A large amount of sludge cake remains in the cake storage hopper.

The prior art related to the sludge cake storage hopper for storing the sludge cake as described above includes a door which constitutes the gate as disclosed in Korean Registered Utility Model No. 20-0289100 (hereinafter referred to as "Prior Art Document 1") When the door is closed, the door is moved together with the door so as to be discharged from the cake hopper when the door is opened to discharge the sludge cake to the vehicle. A technique such as a cake hopper has been proposed that can reduce the cost of periodic cleaning without inconveniencing the need to move the drainage piping during sludge cake removal.

Also, as disclosed in Korean Patent Registration No. 10-0924013 (hereinafter referred to as "Prior Art Document 2"), a scraper for conveying sludge to a vehicle is coupled to a lower side of a silo storing sludge, A screw conveyor for preventing the sludge from sticking is installed and a reciprocating type gate for regulating the sludge supply amount is provided below the screw conveyor and the surrounding of the reciprocating type gate is prevented from being dirty during loading And a stirring and discharging device in a sludge storage tank in which a sling belt is installed for each of the sludge storage devices.

Also, as disclosed in Korean Patent Registration No. 10-1610043 (hereinafter referred to as "Prior Art Document 3"), the leachate receiver for receiving the leachate leaking from the cake hopper can be easily moved without using any electric energy A gasol such as a sludge cake hopper leachate collecting device capable of improving the operator's convenience in both cases of loading a sludge cake on a transportation vehicle and collecting leachate has been proposed.

Korean Registered Utility Model No. 20-0289100 Korean Patent Registration No. 10-0924013 Korean Registered Patent No. 10-1610043

However, the prior art documents 1 to 3 have a complicated technical structure for treating leachate.

Particularly, in the storage hoppers provided in the prior art documents 1 to 3, the bridging phenomenon and the rat-holing phenomenon due to the stored sludge cake can not be prevented, that is, compared with the gate having a narrow width, Has the above-mentioned problem in the process of storing the sludge cake containing moisture with a large area.

That is, the sludge cake located on both sides of the inner side of the sludge cake storage hopper is bridged from the solidified portion to the center side due to solidification.

In addition, in the process of discharging the sludge cake on both sides through the gate by the solidified sludge cake on both sides, the sludge cake on both sides is not discharged but only the sludge cake in the central part is discharged.

This resulted in a significant reduction in the discharge efficiency of the sludge cake in the sludge cake storage hopper.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a sludge cake which is stored when a sludge cake is discharged through a gate without bridging and rat- And to provide a sludge cake discharging guide device for a sludge cake storing hopper which can drain quickly without a leakage of leachate generated from a sludge cake.

It is another object of the present invention to provide a drainage system capable of smoothly draining leachate while preventing leakage of leachate into gaps between gates of a gate.

Another specific technical problem of the present invention is to lower the water content of the stored sludge cake.

According to an aspect of the present invention, there is provided a sludge cake storage device comprising: a siphon opening for receiving a sludge cake to be stored on a top surface; a pair of doors opened and closed at both sides of the bottom of the bottom; And a sludge cake storing hopper comprising a pair of drive cylinders for driving the sludge cake, wherein the sludge cake conveyed to the lower part of the inlet of the sludge cake conveying device A split guide plate for dividing the cake into a storage space of the cake storage hopper; And a sloped sloped surface formed on both sides of the sloped cake storage hopper so as to correspond to sloped surfaces on both sides of the slurry cake storage hopper, And a partitioning guide member including a receiving space through which the leachate flows into the inside while being able to supply dry air.

Wherein each of the divided inclined surfaces of the divided guide members is formed with a plurality of pores having a predetermined interval, the divided inclined surfaces are formed in the shape of a corrugate, the leaking water flows into the outer side surfaces of the divided inclined surfaces, Shaped EPDM (ETHYLENE PROPYLENE DIENE MONOMER) rubber pad.

The receiving space is divided into a space in which the lower portion accommodates the leachate by the diaphragm and a space in which the upper portion is provided with the dry air supply pipe.

And each of the sealing jaws is formed at a position where the door is in contact with the lower end of the division guide member of each door of the gate so that the leaking water flows into the accommodation space without leaking through the gap between the doors.

And a drain pipe connected to a drain tank provided at a lower portion of the sludge cake storage hopper, the drain pipe being connected at one end to discharge the leached water accommodated in the accommodation space to the front surface or the back surface of the sludge cake storage hopper, Further comprising connecting the drainage means to discharge the leachate within the venturi principle.

The drainage means includes a water tank, a pump circulating water in the water tank, a circulation pipe, and a venturi tube portion formed on the circulation tube. The venturi tube portion is connected to the drain pipe so as to drain the leachate by a negative pressure, And additional tubes.

The present invention is capable of quickly discharging the sludge cake without a bridging phenomenon and a rat-holing phenomenon occurring in the sludge cake stored when discharging the sludge cake through the gate, It is possible to discharge the sludge cake quickly and smoothly without remaining in the sludge cake storage hopper, thereby maximizing the discharge efficiency and not polluting the surrounding environment .

In addition, the water content of the sludge cake to be stored can be lowered, thereby reducing the amount of leachate and increasing the emission efficiency.

1 is a perspective view for explaining the present invention,
Fig. 2 is a cross-sectional view according to Fig. 1,
FIG. 3 is a partially cutaway perspective view of the sludge cake storage hopper according to FIG. 1,
4 to 5 are sectional views for explaining the use state of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The present invention is not limited to the embodiments.

FIG. 1 is a perspective view for explaining the present invention, FIG. 2 is a sectional view according to FIG. 1, FIG. 3 is a partially cutaway perspective view of a sludge cake storage hopper according to FIG. 1, Fig.

As shown in FIG. 1, the conventional sludge cake storage hopper 100 is a facility for temporarily storing sludge, which is generated through various kinds of water processing, through a general dehydration process and dewatered sludge in a caked state.

The sludge cake storage hopper 100 is provided with an inlet port 102 through which a sludge cake to be stored is loaded and a gate 110 below the bottom surface of the sludge cake storage hopper 100. The gate 110 is opened / A pair of doors 112 and a pair of driving cylinders 114 for driving the pair of doors 112, respectively.

In addition, the sludge cake storage hopper 100 is discharged through the gate 110 provided below the sludge cake storage hopper 100 in a state where the vehicle is stopped at a lower portion thereof, so that the falling sludge cake falls into the car loading box. At a suitable height and a height of about 3 to 4 m by a conventional frame or the like.

However, in the conventional sludge cake storage hopper, bridging phenomenon and rat-holing phenomenon due to the stored sludge cake can not be prevented. That is, the inside of the sludge cake storage hopper has a large area And the sludge cake containing moisture is stored.

That is, the sludge cake located on both sides of the inner side of the sludge cake storage hopper is bridged from the solidified portion to the center side due to solidification.

In addition, in the process of discharging the sludge cake on both sides through the gate by the solidified sludge cake on both sides, the sludge cake on both sides is not discharged but only the sludge cake in the central part is discharged.

This resulted in a significant reduction in the discharge efficiency of the sludge cake in the sludge cake storage hopper.

In order to solve the above-mentioned problem, the sludge cake storage hopper needs to be set to have a narrow width, but at this time, the problem is solved due to limitations in installation and space as well as storage amount.

SUMMARY OF THE INVENTION In view of the above problems, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a sludge cake dispenser which can quickly discharge the sludge cake in a short period of time without bridging and rat- So that drainage can be smoothly performed without leakage of leachate generated from the sludge cake.

The discharge guide device 1 for discharging the sludge cake stored in the sludge cake storage hopper 100 according to the present invention is provided with a sludge cake which is brought into the lower part of the inlet 102 through the inlet 102, And a split guide plate 10 which divides the storage hopper 100 into a storage space 104. The division guide plate is mounted on the front and rear surfaces of the sludge cake storage hopper by conventional welding, bolting or the like.

In addition, it is connected to the bottom surface of the division guide plate 10 by a conventional method and is gradually and broadly formed in the shape of a normal isosceles triangle toward the lower gate 110 side, and on both sides of the sludge cake storage hopper 100, The inclined slope 22 inclined in a shape corresponding to the inclined surface 105 is formed and the bottom surface is closed so that the storage space 104 is divided into two and the accommodating space 24 in which the leachate flows into the inside and can supply dry air And a partitioning guide member (20) including the partitioning guide member (20).

In other words, each inclined surface of the sludge cake storage hopper and each divided inclined surface of the divided guide member divides the storage space into a narrow space having a narrow space for storing the sludge cake.

Therefore, due to the wide storage space of the conventional sludge cake storage hopper, adhesion of the sludge cake due to solidification to both sides is minimized, thereby preventing the bridging phenomenon.

In addition, since the storage space is divided by half with the division guide member interposed therebetween, the width of each storage space is formed to have a narrow width, and each inclined surface of the sludge cake storage hopper and the divided inclined surfaces of the divided guide members are formed in a steeply inclined shape So that the sludge cake can be discharged quickly without being subjected to ratcheting even in the process of discharging the sludge cake by opening each door of the gate.

Accordingly, the sludge cake stored in the sludge cake storage hopper is prevented from bridging and the sludge pilling phenomenon is prevented, so that the sludge cake can be discharged quickly in a short time.

Each of the divided inclined surfaces 22 of the division guide member 20 is formed with a plurality of perforations 22A at predetermined intervals and the divided inclined surfaces 22 are formed in the shape of a waveform, Each of the outer surfaces includes an EPDM (ETHYLENE PROPYLENE DIENE MONOMER) rubber pad 23 in the form of a conventional mesh or porous form so that the leachate flows in and the dry air is exhausted.

In other words, the division guide member has a function of dividing the storage space to have a narrow width, and in addition to being formed in the shape of a wave to prevent the pressure of the sludge cake stored therein from being deformed, A plurality of pores are formed so that the supply of dry air can be smoothly performed while allowing the inflow to be performed smoothly. At this time, the perforations formed on the divided inclined surfaces formed in the corrugated form are formed in the crests and valleys of the corrugated lower portion into which the leachate flows, and the upper side to which the dry air is supplied is formed only in the corrugated portions.

As a result, the leachate can be smoothly introduced into the storage space, and also the dry air can be smoothly supplied to the storage space.

In the above, the receiving space 24 is a space in which the lower portion is the space in which the leachate is accommodated by the diaphragm 24A formed in the transverse direction of the middle portion, and the upper portion is a drying And is divided into a space in which an air supply pipe () is provided. The dry air supply pipe also has a plurality of pores for supplying dry air.

Accordingly, the dry air supplied through the dry air supply pipe is supplied to the storage space through the perforations of the divided slopes of the division guide member and the EPDM rubber pads in a mesh form or a porous form, whereby the water content of the sludge cake stored or stored as the storage space The amount of leachate can be reduced and the discharge efficiency can be increased when the gate is opened.

The leaking water is introduced into the accommodating space 24 without leaking through the gap between the doors 112 at the position where the door 110 of the gate 110 contacts the lower end of the division guide member 20 The sealing jaw 30 is provided.

In other words, it is possible to solve various problems caused by leaking water leaking to the portion where the door is brought into contact with the door, and not to have a complicated technical structure, but to seal the door by the sealing jaws formed on the door, Can be smoothly introduced. Thereby not polluting the surrounding environment.

In addition, the present invention does not have a complicated technical structure of drainage of drainage water, but also provides a technical configuration in which drainage can be smoothly performed by a simple technical arrangement.

One end of the sludge cake storage hopper 100 is connected to the drainage tank 42 provided at the lower portion of the sludge cake storage hopper 100 and the other end of the sludge cake storage hopper 100 is connected to the drainage tank 42 Wherein the drain pipe (40) is connected to the drain means (50) to discharge the leachate in the receiving space (24) by the venturi principle.

The drainage means 50 includes a water tank 52 filled with water for circulation, a conventional pump (not shown) circulating water in the water tank 52, a circulation pipe 54, A venturi pipe section 54A is formed on the pipe 54. The venturi pipe section 54A includes a negative pressure pipe 56 connected to the drain pipe 40 to discharge the leachate by a negative pressure.

In other words, as the water is circulated in the water tank through the circulation pipe by driving the pump, a venturi phenomenon occurs in the venturi tube portion and a negative pressure is generated in the water pipe through the negative pressure tube portion connected to the venturi tube portion, The drainage of the leachate in the drainage tank can be performed smoothly.

This not only has a complicated technical structure, but also has a condition to prevent pollution of the surrounding environment by discharging leachate leached from the stored sludge cake by a simple technical configuration cleanly and smoothly without leaking.

1: Discharge guide device
10: Split guide plate 20: Split guide member
22: split slope 22A: perforation
23: EPDM rubber pad 24: accommodation space
24A: diaphragm 30: sealing jaw
40: drain pipe 42: drain tank
50: drainage means 52: water tank
54: circulation pipe 54A: venturi pipe
56: Negative pressure tube
100: Sludge cake storage hopper
102: Entrance 110: Gay
112: door 114: driving cylinder

Claims (6)

A sludge containing a sludge cake to be stored on an upper surface, a gate composed of a pair of drive cylinders for driving the pair of doors, a pair of doors opened and closed at both sides of the bottom of the bottom, A discharge guide device for discharging a sludge cake stored in a cake storage hopper,
The discharge guide device includes:
A divided guide plate for dividing the sludge cake brought into the lower part of the inlet into the storage space of the sludge cake storage hopper; And
A sloping sloped surface is formed on both sides of the sloped cake storage hopper so as to correspond to sloped surfaces on both sides of the slurry cake storage hopper, and the bottom surface is closed, And a partitioning guide member including a receiving space into which the leachate flows into and can supply dry air. The method of claim 1,
Wherein each of the divided inclined surfaces of the divided guide members is formed with a plurality of pores having a predetermined interval, the divided inclined surfaces are formed in the shape of a corrugate, the leaking water flows into the outer side surfaces of the divided inclined surfaces, Wherein the EPDM (ETHYLENE PROPYLENE DIENE MONOMER) rubber pad is provided on the sludge cake storage hopper. The method of claim 1,
Wherein the accommodating space is divided into a space in which a lower portion accommodates leachate by a diaphragm and a space in which an upper portion is divided into a space provided with a dry air supply pipe. The method of claim 1,
Wherein each of the sealing jaws is formed at a position where the door is in contact with the lower end of the division guide member of each door of the gate so that the leaking water is introduced into the accommodation space without leakage through the gap between the doors, Cake discharge guide device. 5. The method of claim 4,
And a drain pipe connected to a drain tank provided at a lower portion of the sludge cake storage hopper, the drain pipe being connected at one end to discharge the leached water accommodated in the accommodation space to the front surface or the back surface of the sludge cake storage hopper, Further comprising connecting the drainage means with the venturi means to discharge the leachate within the sludge cake storage hopper. 6. The method of claim 5,
The drainage means includes a water tank, a pump circulating water in the water tank, a circulation pipe, and a venturi tube portion formed on the circulation tube. The venturi tube portion is connected to the drain pipe so as to drain the leachate by a negative pressure, A sludge cake discharge guide device for a sludge cake storage hopper comprising an addition tube.

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