KR20080054853A - A slurry dehydrator - Google Patents

Abstract

A slurry dehydrator is provided to improve dehydration performance by rotating a vertical drum part rotated at a high speed and a pressing screw part rotated at a low speed oppositely to each other, and prevent environmental pollution due to wastewater containing sludge by ascending water and draining supernatant only while settling sludge in a space part between an intermediate pipe and a drain pipe installed in a central inner part of the pressing screw part. A slurry dehydrator comprises: a vertical drum part(1) which has a slurry supply part(2) formed on a bottom side thereof to supply a slurry into the vertical drum part and a slurry discharge part(3) formed on a top side thereof to discharge the slurry from the vertical drum part, and which is rotated at a high speed by power of a motor(11) to separate solids and liquid from the supplied slurry by the centrifugal force; and a pressing screw part which is installed within the vertical drum part and rotated at a low speed by power of a motor(41) to transfer and press the slurry supplied to the bottom side to an upper side and drain the separated water flown into the pressing screw part. The pressing screw part includes: a perforated pipe(42) having a drain part(43) formed therein; a transfer vanes formed on an outer peripheral surfaces of the perforated pipe; and an intermediate pipe(45) which is installed above the blocking part, of which a bottom portion is opened, and of which a top portion is fixed. The transfer vanes have elastic elements(441) projected from peripheries thereof. The drain part includes a drain pipe(431) and a blocking part(432). The slurry dehydrator further comprises an air injecting unit including a plurality of air injecting holes formed on a circumference of the vertical drum part and an air injecting impeller formed at an outer side of the air injecting holes. Further, the vertical drum part rotates in an opposite direction of a rotation direction of the pressing screw part.

Description

Slurry dehydrator {A slurry dehydrator}

1 is a cross-sectional view showing a dewatering device of the present invention.

Figure 2 is an enlarged cross-sectional view of the slurry supply unit constituting the dewatering device of the present invention.

Figure 3 is an enlarged cross-sectional view of the slurry discharge portion constituting the dewatering device of the present invention.

4 is an enlarged view of the discharge unit according to the present invention;

       4A is a partially cutaway perspective view,

       4B is a cross-sectional view taken along the line A-A of FIG.

5 is an enlarged sectional view taken along the line B-B in FIG.

6 is a cross-sectional view showing the operating relationship of the present invention.

Figure 7 is an enlarged cross-sectional view showing the interior of the dehydration container according to the present invention.

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

1: vertical drum

    11: motor

2: slurry supply unit

    21: vertical feed pipe

         211: first supply hole

    22: first chamber

    23: second supply hole

    24: 1st rising screw

    25: slurry discharge hole

         251: discharge pipe, 252: valve

    26: second chamber

    27: pressure gauge

3: slurry discharge part

    31: first discharge hole

    32: discharge chamber

         321: second discharge hole

    33: discharge duct

    34: discharge space

         341: air input hole

    35: circumference guide blade

    36: discharge guide wing

4: Compression screw part

    41: motor

    42: drill hole

    43: drain

         431: drain pipe, 432: block, 433: perforated block

    44: feed wing

         441 circumferential elastic piece

    45: intermediate tube

5: air input means

    51: air inlet hole

    52: air impeller

The present invention relates to a slurry dehydration apparatus, and more particularly to a slurry dehydration apparatus that can improve the dewatering performance by pressing while applying a centrifugal force to the slurry.

Generally, a slurry is a sediment or suspended matter of wastewater and a large amount of water as a mixture of a solid and a liquid.

The slurry dehydration apparatus is widely used to reduce the environmental pollution caused by slurry treatment by reducing the volume of the slurry by removing the moisture of the slurry.

That is, the conventional slurry dewatering apparatus is known, typically a filter press method and a centrifugal force type device for compressing and treating the slurry, the present invention is an improvement of the centrifugal force type dewatering device, first, the conventional centrifugal force type dewatering device Looking at it as follows.

Conventional dewatering device is composed of a fixed drum having a plurality of holes formed in the lower portion and a pressure screw rotated inside the drum. The drum may include a slurry inlet provided at an upper portion of one side and an outlet provided at the other side.

Therefore, when the slurry is supplied to the inlet, the supplied slurry is compressed through the compressive force according to the rotation of the pressure screw and moved to the outlet, so that the water contained in the slurry is discharged downward through the hole formed in the lower part of the drum. It is.

However, the conventional dehydration apparatus configured as described above has a problem in that dehydration performance is lowered by removing moisture only by compressing the slurry through the rotation of the pressure screw.

Accordingly, the present invention has been invented to solve the conventional problems as described above, an object of the present invention is to provide a slurry dewatering apparatus that can improve the dewatering performance by pressing while applying a centrifugal force to the injected slurry.

In addition, there is also an object to further improve the dewatering performance by rotating the vertical drum portion rotated at high speed and the compression screw portion rotated in the opposite direction to each other.

In addition, there is also an object to drain only the supernatant water by allowing only the water to rise while the sludge is settled in the space between the intermediate pipe and the drain pipe provided in the center of the compression screw.

Another object is to allow the slurry to be dried by introducing external air through the side wall of the vertical drum.

In addition, it is also possible to easily adjust the amount of the slurry flowing into the vertical drum portion by allowing the slurry supply portion to discharge some of the slurry by adjusting the valve.

In addition, there is also an object to allow the slurry flowing from the lower portion of the vertical drum portion to be supplied up without clogging.

In addition, there is also an object to allow the discharge of the solidified sludge through the guide vane more smoothly.

The present invention for achieving the above object, the slurry is supplied from the lower side through the slurry supply, discharge unit is discharged to the upper side and the solid-liquid separation of the slurry supplied by the centrifugal force while rotating at a high speed by the power of the motor It is provided in the vertical drum unit and the vertical drum unit, while rotating at a low speed by the power of the motor to transfer the slurry supplied to the lower side of the vertical drum unit to the upper side to compress, and the separated water is introduced into the drain screw screw compression It is characterized by a configured slurry dewatering device.

In addition, the vertical drum 1 and the compression screw 4 is characterized in that the rotation in the opposite direction.

In addition, the compression screw portion is characterized in that it is composed of a perforated pipe including a drain provided in the inside, and a transfer blade provided on the outer periphery of the perforated pipe.

In addition, the drain portion, characterized in that consisting of a drain pipe provided with an upper portion is opened inside the perforated pipe, and a blocking portion provided between the lower portion and the drain pipe of the perforated pipe.

In addition, the drain pipe is protruded to the upper portion of the other hole, characterized in that the upper portion of the upper part of the blocking portion between the drain pipe and the other hole is further provided with an intermediate tube fixed to the upper portion.

In addition, the periphery of the transfer blade, characterized in that the peripheral elastic piece is provided to protrude so as to improve the adhesion to the vertical drum.

In addition, the slurry supply portion is formed in the lower portion of the vertical drum portion is smaller than the perforated tube and larger in diameter than the drain pipe so that the drain pipe is penetrated and a plurality of first supply holes are formed at the side, and the periphery of the vertical supply pipe. It is characterized in that it comprises a first chamber for wrapping and supplying the slurry to the first supply hole, and a plurality of second supply holes formed around the lower portion of the blocking portion of the other hole.

In addition, the outer periphery of the drain pipe, characterized in that further provided with a first lifting screw for raising the slurry supplied to a position corresponding to the first supply hole.

Further, a slurry discharge hole is further provided at an upper portion of the first supply hole of the vertical supply pipe, and a second chamber having a discharge pipe that is opened and closed through a valve is further provided outside the slurry discharge hole, and a circumference of the second chamber is provided. The pressure gauge for adjusting the valve by grasping the compression pressure of the slurry is characterized in that it is further provided.

In addition, the upper part of the blocking portion between the drainage pipe and the other hole is further provided with an intermediate tube having a lower opening and a fixed upper portion, and the blocking portion comprises a perforated blocking plate having a plurality of vertical through holes for lowering the slurry. It is done.

In addition, the outer side of the vertical drum portion, characterized in that the air inlet means for introducing external air into the vertical drum portion further.

The air inlet means may include an air inlet hole formed in a plurality of circumferences of the vertical drum unit, and an air inlet impeller provided outside the air inlet hole that is outside the vertical drum unit to guide the outside air to the air inlet hole. .

The slurry discharge part may include a plurality of first discharge holes provided on the upper sidewall of the vertical drum part, and a discharge chamber having a second discharge hole connected to the discharge duct so as to be non-rotated while surrounding the outside of the first discharge hole. It is characterized by.

In addition, an upper portion of the vertical drum portion is further provided with a discharge space portion in communication with the first discharge hole and the upper air discharge hole formed therein a plurality of air inlet from the outside, a plurality of circumference inside the first discharge hole A guide blade is further provided, and a discharge guide blade for discharging the slurry to the first discharge hole is further provided on the upper portion of the transfer blade of the compression screw portion.

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

1 is an overall cross-sectional view showing a dewatering device of the present invention.

Thus, the dehydration apparatus of the present invention, the slurry is supplied from the lower side through the slurry supply, discharge unit (2, 3) is discharged to the upper side and rotated at high speed by the power of the motor (11) and It is composed of a compression screw portion 4 which is provided inside the vertical drum portion 1 and rotates at a low speed by the power of the motor 41.

That is, the vertical drum unit 1 is configured to solidify the slurry supplied into the interior by centrifugal force while rotating at high speed by the power of the motor 11, and can be vertically rotated through the frame 6. Is supported. In addition, the motor 11 is provided on the upper part of the frame 6 so that the rotation shaft of the motor 11 is directly connected to the upper center of the vertical drum part 1.

The compression screw unit 4 rotates at a low speed by the power of the motor 41 and transfers the slurry supplied to the lower side of the vertical drum unit 1 to the upper side to compress the compressed slurry. The upper part is fixed to the upper center of the vertical drum portion 1 through a fixing means such as a bearing, and the lower part is fixed to the lower part of the frame 6 through a fixing means such as a bearing.

In addition, the vertical drum portion 1 and the compression screw portion 4 may rotate in the same direction to dewater the sludge, and also rotate the vertical drum portion 1 and the compression screw portion 4 in opposite directions. It is also possible to dehydrate the slurry. And it is possible to further improve the dewatering performance by rotating the vertical drum 1 and the compression screw 4 in the opposite direction.

In addition, the compression screw 4 is composed of a piercing pipe 42 having a drainage portion 43 provided therein and a transfer blade 44 provided on the outer periphery of the piercing pipe 42. , By pressing while raising the slurry through the rotation of the transfer blade (44). In addition, the periphery elastic piece 441 is provided to protrude from the periphery of the transfer blade 44 so as to improve the adhesion between the vertical drum portion 1 and. That is, the circumferential elastic piece 441 is made of rubber or urethane, and thus the elasticity of the circumference of the transfer blade 44 and the vertical drum portion 1 can be improved by having elasticity.

And the drainage portion 43 is provided in the inside of the perforated pipe 42, the drain pipe 431 is provided so that the upper portion is opened in the inside of the perforated pipe 42, and the lower portion of the perforated pipe 42 and It is composed of a blocking portion 432 provided between the drain pipe 431.

In addition, the drain pipe 431 is protruded to the upper portion of the perforated pipe 42, the lower part of the middle pipe is open and the upper portion is fixed to the upper portion of the blocking portion 432 between the drain pipe 431 and the perforated pipe 42 45 is provided.

2 is an enlarged view of the slurry supply unit constituting the dewatering device of the present invention, wherein the slurry supply unit 2 has a diameter smaller than that of the perforated tube 42 in the lower portion of the vertical drum unit 1 and the drain pipe 431. A larger diameter is formed so that the drain pipe 431 penetrates and the vertical supply pipe 21 having a plurality of first supply holes 211 is formed on the side thereof, and the slurry is wrapped around the vertical supply pipe 21 and the slurry is supplied to the first supply hole. The first chamber 22 to be supplied to the 211 and a plurality of second supply holes 23 formed around the lower portion of the blocking portion 432 of the other hole (42). In particular, the first chamber 22 is fixed to the frame.

In addition, the outer periphery of the drain pipe 431 is further provided with a first raising screw 24 for raising the slurry supplied at a position corresponding to the first supply hole 211, thereby moving to the first supply hole 211. This allows the incoming slurry to be fed up without clogging.

In addition, a slurry discharge hole 25 is further provided at an upper portion of the first supply hole 211 of the vertical supply pipe 21, and an discharge pipe opened and closed through a valve 252 outside the slurry discharge hole 25 ( Since the second chamber 26 having the 251 is further provided, the amount of the slurry flowing into the vertical drum unit 1 can be easily adjusted by partially discharging the slurry through the adjustment of the valve 252. That is, the amount of slurry can be easily adjusted by operating only the valve 252 provided in the discharge pipe 251 without operating the main valve (not shown) directly connected to the sludge supply pipe. In addition, a pressure gauge 27 for adjusting the valve 252 by grasping the compression pressure of the slurry supplied therein is further provided around the second chamber 26 to thereby supply the slurry in an appropriate amount. It is possible to prevent the failure in advance.

In addition, an upper portion of the blocking portion 432 between the drain pipe 431 and the other hole pipe 42 is further provided with an intermediate pipe 45 having an open lower portion and a fixed upper portion, as shown in FIG. The blocking portion 432 is composed of a perforated blocking plate 433 is provided with a plurality of vertical through holes for lowering the slurry.

Figure 3 is an enlarged cross-sectional view of the slurry discharge portion constituting the dewatering device of the present invention, Figure 4 is an enlarged view of the discharge portion according to the present invention, Figure 4a is a partial cutaway perspective view, Figure 4b is a line AA of Figure 3 As a cross-sectional view, the slurry discharge portion 3 is non-rotated while surrounding the outside of the first discharge hole 31 and the plurality of first discharge holes 31 provided on the upper side wall of the vertical drum unit 1. It is provided with a discharge chamber 32 is provided with a second discharge hole 321 is connected to the discharge duct (33).

In addition, an upper portion of the vertical drum unit 1 further includes a discharge space 34 having a plurality of air inlet holes 341 communicating with the first discharge hole 31 and having air introduced therein. In addition, a plurality of circumferential guide vanes 35 are further provided on the inner side of each of the first discharge holes 31, and the slurry is raised upward on the upper part of the transfer blades 44 of the compression screw unit 4. It is further provided with a discharge guide blade 36 for discharging the first discharge hole (31).

That is, the discharge guide blade 36 diffuses the solidified slurry rising from the lower side to the first discharge hole 31, and the circumferential guide blade 35 discharges the diffused slurry to each first discharge hole. By collecting the transfer to the hole 31, the discharge, the circumference guide blades 36, 35 are rotated to facilitate the discharge of the slurry.

Therefore, by smoothly discharging the solidified slurry through the discharge, the circumferential guide blade 36, it is possible to prevent failures such as the device is stopped during operation of the device.

FIG. 5 is an enlarged sectional view taken along the line B-B in FIG. 1, wherein an outside portion of the vertical drum portion 1 is further provided with air inlet means 5 for introducing external air into the vertical drum portion 1.

The air inlet 5 is formed on the outside of the air inlet hole 51 formed in the periphery of the vertical drum unit 1 and the air inlet hole 51, which is an outer side of the vertical drum unit 1. It is provided with an air input impeller 52 to guide the outside air to the air input hole (51).

In addition, the air injection impeller 52, the upper and lower circumference ring 521, a plurality of holes 522 are formed, the side wall 523 blocking the outside of the upper and lower circumference ring 521, and the upper It is provided between the lower circumferential ring 521 is composed of a guide blade 524 for guiding the external air introduced from the hole 522 to the air inlet hole (51). In addition, the guide blade 524 is provided so that the angle can be changed through the bolt that is fastened to the arc through the long hole and the long hole, it is possible to adjust the flow rate of air.

Therefore, by introducing external air through the air inlet hole 51 formed on the side wall of the vertical drum unit 1, as the slurry is dried, the dehydration performance of the water can be further improved.

Hereinafter, the operational relationship of the present invention configured as described above are as follows.

6 is a cross-sectional view showing the operating relationship of the present invention, Figure 7 is an enlarged cross-sectional view showing the interior of the dehydration container according to the present invention.

1 to 7, when operating the slurry dehydration apparatus of the present invention, the vertical drum portion 1 is rotated at high speed by driving the motor 11 and the motor 41 is operated at the same time. By rotating the compression screw portion (4) provided in the interior of the vertical drum (1). In other words, the vertical drum 1 and the compression screw 4 are rotated in opposite directions.

When the slurry containing water is supplied to the first chamber 22 through the supply pipe constituting the slurry supply unit 3, the slurry supplied to the first chamber 22 is the first supply formed in the vertical supply pipe 21. It flows into the hole 211.

Next, the slurry introduced into the first supply hole 211 is lifted upward through the rotation of the first raising screw 24 provided on the outside of the drain pipe 431 constituting the compression screw unit 4, and the elevated slurry Is passed through the second supply hole 23 formed around the lower portion of the perforated pipe 42 to the outside of the perforated pipe 42.

Next, the slurry introduced into the outer bottom of the perforated pipe 42 is raised through the low speed rotation of the transfer blade 44 provided on the outside of the perforated pipe 42. That is, in the process of raising the slurry as described above, the feed vane 44 is rotated at a low speed and the vertical drum unit 1 is rotated at a high speed, so that the risen slurry is compressed through the rotation of the feed vane 44 and at the same time the vertical drum unit. Due to the centrifugal force generated in (1), the solids are separated.

And as the slurry rises as described above is compressed while being spread outward while receiving the centrifugal force, the performance of the solid-liquid separation is improved by maximizing the compression force of the slurry. That is, when the solid-liquid separation is performed as described above, the solidified slurry is diffused to the outside, and the moisture generated in the slurry is concentrated in the center and flows into the other hole 42.

Therefore, the slurry solidified as above is lifted to the top, and water is introduced into the perforated tube 42.

After the slurry is raised to the discharge space 34 constituting the slurry discharge portion 3, the plurality of first discharge holes through the rotation of the discharge guide blade 35 and the circumferential guide blade 36 31). The solidified slurry passes through the second discharge hole 321 at the moment when the first discharge hole 31 and the second discharge hole 321 provided in the discharge chamber 32 coincide with each other. It is discharged to the outside through. In addition, in the process of discharging the solidified slurry as described above, the air is introduced through the air inlet hole 341 formed in the upper portion of the slurry discharge part 3 so that the diffusion of the slurry proceeds more smoothly.

In addition, the water flowing into the perforated pipe 42 collides with the outer circumferential surface of the intermediate pipe 45 and falls downward, and then flows into the space between the intermediate pipe 45 and the drain pipe 431. In this way, the supernatant of water introduced into the space between the intermediate pipe 45 and the drain pipe 431 is dewatered through a series of processes dropped through the drain pipe 431 and discharged to the outside.

In addition, as described above, water is introduced into the space between the other hole 42 and the intermediate pipe 45, and then passes through the lower portion of the intermediate pipe 45, and then in the space between the intermediate pipe 45 and the drain pipe 431. In the ascending process, the slurry contained in the water is precipitated to the lower portion and the precipitated slurry passes through the perforated blocking plate 433 constituting the blocking portion 432 and flows back into the vertical drum portion 1 again. It is to be dehydrated again.

Therefore, the sludge in the space between the intermediate pipe 45 and the drain pipe 431 as described above is allowed to rise only the water while the sediment is settled, it is possible to prevent the environmental pollution due to the waste water containing the sludge.

On the other hand, in the dehydration process as described above, the air injection impeller 52 provided on the outside of the vertical drum unit 1 is also rotated together, the air injection hole 51 formed on the side wall of the vertical drum unit 1 As air is introduced into the furnace, the moisture contained in the slurry is blown to the central portion, thereby further improving the dehydration performance of the water.

As described above, the present invention has the effect of maximally improving the dehydration efficiency compared to the capacity by simultaneously pressing the slurry while applying centrifugal force to the injected slurry.

In addition, by rotating the vertical drum portion rotated at a high speed and the compression screw portion rotated at a low speed to each other in the opposite direction, it is also effective to provide a slurry dewatering device that can obtain a high efficiency while reducing capacity by further improving the dewatering performance. .

In addition, the sludge in the space between the intermediate pipe and the drain pipe provided in the center of the compression screw portion is allowed to rise only the water by allowing only the water to be precipitated, there is also an effect that can prevent the environmental pollution due to the sludge-containing waste water.

In addition, as the slurry is dried by introducing external air through the side wall of the vertical drum, there is an effect of further improving the dehydration performance of the water.

Also, by adjusting the valve in the slurry supply part, it is possible to easily adjust the amount of the slurry flowing into the vertical drum part by adjusting the valve, so that the discharge pipe is not operated without operating the main valve directly connected to the sludge supply pipe. There is also an effect that can easily adjust the amount of slurry through the operation of the provided valve.

In addition, by allowing the slurry flowing from the lower portion of the vertical drum portion to be supplied up without clogging, there is also an effect that can prevent the failure of the device in advance.

In addition, by smoothing the discharge of the solidified sludge through the guide vane, there is an effect that can prevent in advance, such as failure of the device is stopped during operation of the device.

Claims (16)

Slurry is supplied from the lower side through the slurry supply and discharge parts 2 and 3 to be discharged to the upper side, and is vertically divided into solid-liquid separation of the slurry supplied inside by centrifugal force while rotating at high speed by the power of the motor 11. (1) and, It is provided inside the vertical drum unit 1 and rotates at a low speed by the power of the motor 41 to transfer the slurry supplied to the lower side of the vertical drum unit 1 to the upper side to compress it, and the separated water flows into the inside. Compression screw portion (4) that is drained Slurry dehydration apparatus, characterized in that consisting of. 2. The slurry dewatering device according to claim 1, wherein the vertical drum portion (1) and the compression screw portion (4) are rotated in opposite directions. The method of claim 1, wherein the compression screw portion 4, A perforated pipe 42 including a drain 43 provided therein, Slurry dewatering device, characterized in that consisting of a transfer blade (44) provided on the outer periphery of the perforated pipe (42). According to claim 3, Around the transfer blade 44, Slurry dewatering device characterized in that the circumferential elastic piece (441) is provided to protrude so as to improve the adhesion with the vertical drum (1). The method of claim 3, wherein the drainage portion 43, A drain pipe 431 provided with an upper portion opened in the perforated pipe 42; Slurry dewatering device, characterized in that consisting of a blocking portion 432 provided between the lower portion of the perforated pipe (42) and the drain pipe (431). The method of claim 5, wherein the drain pipe 431 is projected to the upper part of the other hole pipe 42, Slurry dewatering device, characterized in that the upper portion of the blocking portion 432 between the drain pipe 431 and the other hole pipe 42 is further provided with an intermediate pipe 45, the lower portion is open and the upper portion is fixed. The method of claim 5, wherein the slurry supply unit 2, The lower portion of the vertical drum unit 1 is smaller in diameter than the perforated tube 42 and larger in diameter than the drain pipe 431 so that the drain pipe 431 penetrates and a plurality of first supply holes 211 are formed at the side thereof. Vertical feed pipe (21), A first chamber 22 surrounding the vertical supply pipe 21 and supplying a slurry to the first supply hole 211; Slurry dewatering device, characterized in that consisting of a plurality of second supply holes (23) formed around the lower portion of the blocking portion (432) of the perforated pipe (42). The outer periphery of the drain pipe 431, according to claim 7, Slurry dewatering device characterized in that it further comprises a first raising screw (24) for raising the slurry supplied in a position corresponding to the first supply hole (211). 9. The slurry dewatering device according to claim 8, wherein at least one lifting screw (241) for raising the slurry is further provided on the first raising screw (24). The method of claim 7, wherein the slurry discharge hole 25 is further provided in the upper portion of the first supply hole 211 of the vertical supply pipe 21, The outer side of the slurry discharge hole 25 is further provided with a second chamber 26 having a discharge pipe 251 that is opened and closed through the valve 252, Slurry dewatering device characterized in that the pressure gauge (27) for adjusting the valve (252) by grasping the compression pressure of the slurry around the second chamber (26). According to claim 7, The upper portion of the blocking portion 432 between the drain pipe 431 and the other hole 42 is further provided with an intermediate pipe 45, the lower portion is open and the upper portion is fixed, The blocking unit 432 is a slurry dewatering device, characterized in that consisting of a perforated blocking plate 433 is provided with a plurality of vertical through holes for lowering the slurry. The outer side of the said vertical drum part 1, Slurry dewatering device characterized in that it is further provided with an air input means (5) for introducing external air into the vertical drum (1). The air inlet means 5 according to claim 12, An air inlet hole 51 formed in a plurality of circumferences of the vertical drum unit 1, Slurry dewatering device characterized in that it is provided on the outside of the air inlet hole (51) that is outside of the vertical drum (1) to guide the external air to the air inlet hole (51). The method of claim 13, wherein the air impeller 52, Upper and lower circumference ring 521 is formed with a plurality of holes 522, Side walls 523 that block the outside of the upper and lower circumferential rings 521, Slurry dewatering device characterized in that it is provided between the upper and lower circumference ring (521) to guide the wing (524) for guiding the external air introduced from the hole (522) to the air input hole (51). The method of claim 1, wherein the slurry discharge portion 3, A plurality of first discharge holes 31 provided on the upper side wall of the vertical drum unit 1, Slurry dewatering device characterized in that it comprises a discharge chamber (32) provided with a second discharge hole (321) connected to the discharge duct 33 is provided so as to rotate around the outer side of the first discharge hole (31). The discharge space portion 34 of claim 15, wherein the upper portion of the vertical drum portion 1 communicates with the first discharge hole 31, and a plurality of air injection holes 341 are formed in the upper portion. ), A plurality of circumferential guide vanes 35 are further provided inside each of the first discharge holes 31. Slurry dewatering device, characterized in that the discharge guide blades (36) for discharging the slurry to the upper portion is discharged to the first discharge hole (31) in the upper portion of the transfer blade (44) of the compression screw portion (4).

Images