WO2019103266A1 - Electroosmotic dehydrator - Google Patents

Abstract

The present invention provides an electroosmotic dehydrator comprising at least one among: a device capable of adjusting the thickness of sludge and uniformly supplying sludge; a device capable of uniformly supplying sludge and detecting the amount of sludge supplied; and a device for discharging wet steam.

Description

Electro Penetrating Dehydrator

The present invention relates to an electroosmotic dehydrator, and more particularly, to an electroosmotic dehydrator having at least one of an apparatus capable of controlling the thickness of the sludge and capable of uniformly supplying the sludge, an apparatus capable of uniformly supplying and detecting the amount of the sludge, .

At present, the sewage discharged from homes and factories is sent to the sewage treatment plant and processed. The sewage treatment process includes a purification process and a sludge treatment process. In the purification process, the sewage is purified to a range where the self-purification of the river can be activated and discharged to a public water such as a river. In the sludge treatment process, The sludge is treated through processes such as concentration and dehydration.

A dehydrator, which is one of the devices used in the sludge treatment process, separates the filtrate from the sludge and is classified into a belt press, a filter press, a screw press, a centrifugal dehydrator, and an electroosmotic dehydrator according to the operation principle. In addition, the electro-osmotic dehydrator is a device for dewatering sludge by applying a voltage while applying pressure to the sludge, and can be classified into a drum type and a horizontal transfer type.

The horizontal transfer electro-osmotic dehydrator includes a positive electrode plate and a negative electrode plate disposed above and below the dewatering region, a power source for applying a voltage between the positive electrode plate and the negative electrode plate, and a power source for passing the dewatering region through endless rotation while supporting the sludge. As a main component. Korean Patent No. 10-0956329 (electroosmotic sludge reduction device with screw jack), Korean Patent No. 10-0981640 (electroosmotic sludge reduction device), Korean Patent No. 10-0981641 Korean Patent No. 10-0956613 (Electro-osmotic dehydrator equipped with insulated and reinforced electrode plate) and Korean Patent No. 10-0956614 (Sludge equalizing device) have been used for the above- The same horizontal transfer type electroosmosis dehydrator is introduced.

The drum-type electro-osmotic dehydrator differs from the horizontal-transfer electro-osmotic dehydrator in that the operation principle thereof is the same, but the anode is in the form of a drum and the cathode is a caterpillar that rotates infinitely slightly away from the outer circumferential surface of the cathode drum. Therefore, in the drum type electro-osmotic dehydrator, the gap between the cathode drum and the cathode caterpillar becomes a dehydration zone, and the filter cloth passes through the upper dehydration zone while rotating the filter cloth while rotating the filter cloth. One example of such a drum type electroosmotic dehydrator is disclosed in Korean Patent No. 10-1368959 (electro-osmotic dehydrator having drying function), Korean Patent No. 10-1381804 (sludge inlet device for electric sludge dehydrator) 10-1425984 (sludge inlet device for electric sludge dewatering apparatus).

Irrespective of the type of sludge, it is necessary to supply sludge having a uniform thickness over the entire area of the electrode plate between the anode plate and the anode plate provided in the electroosmotic dehydrator, so that the dewatering efficiency of the sludge is not deteriorated.

Korean Patent No. 10-0956614 (Sludge Equalizing Apparatus) discloses a sludge equalizing apparatus provided in a horizontal transfer electro-osmotic dehydrator for the above reasons. In this sludge equalizing device, the sludge discharged from the hopper is pressed by the roller to an even thickness, and furthermore, a cover plate capable of adjusting the height is provided on the rear of the upper roller to adjust the thickness of the sludge evenly spread. Further, in this sludge equalizing apparatus, whether or not the sludge is injected into the hopper through the photosensor installed at the upper end of the hopper and whether the sludge is overloaded with the hopper is detected.

However, according to the technique disclosed in Korean Patent No. 10-0956614 (Sludge Balance Feeder), it is inconvenient to separately provide a cover plate for adjusting the thickness of the uniformly spreaded sludge, and to accurately control the height of the cover plate A difficult problem occurs. In addition, there arises a problem that the sludge is not allowed to pass through the cover plate because the evenly spread sludge sticks to the cover plate while passing through the cover plate.

Therefore, the present invention aims to provide a technique that not only does not use the upper cover plate at all, but also causes the sludge to be supplied uniformly without causing problems caused by the cover plate, and the thickness of the sludge can be accurately and easily adjusted.

Further, according to the technique disclosed in the above-mentioned SOP 10-0956614 (sludge equal feeding device), only whether or not the sludge is injected into the hopper and whether or not the sludge injected into the hopper overflows can be detected, The amount of sludge supplied to the electrode plates can not be detected at all.

Accordingly, the present invention aims to provide a technique for not only supplying sludge uniformly but also sensing the amount of supplied sludge.

On the other hand, in the electroosmotic dehydrator, voltage is applied between the anode and the cathode which pressurize the sludge placed in the dehydration zone and dehydration is performed. During the dewatering process, some of the filtrate in which the sludge is faded is separated from the sludge by falling through the filter cloth, and the remainder is evaporated from the sludge which has become hot due to the voltage application.

In this process, the dehydrated sludge, that is, the sludge cake, is separated from the filter cloth and is stored in a separate storage means (such as a hopper). However, the sludge cake immediately after dewatering also has a high temperature of about 60-80 ° C, and it contains wet steam. Therefore, when the sludge cake immediately after dewatering is stored in the upper storage means, the wet steam evaporated from the sludge cake is condensed in the upper storage means, becomes a filtrate, and then sucks into the sludge cake again. Also, there is a problem that the wet steam which has not evaporated from the sludge cake is condensed in the sludge cake to become a filtrate.

The above problems are a major cause of deterioration of the dewatering efficiency of the electro-osmotic dehydrator, and the present invention is based on the discovery that by discharging as much moisture as possible from the sludge cake immediately after dewatering in the electro-osmotic dehydrator, ultimately, And to provide a technique for improving the dehydration efficiency.

The electroosmotic dehydrator according to the first embodiment of the present invention is a horizontal transfer type electroosmotic dehydrator having an apparatus capable of controlling the thickness of the sludge and uniformly supplying the same. The sludge regulating and homogenizing device comprises a sludge hopper having a sludge inlet for injecting sludge and a sludge discharging outlet for discharging the sludge at a lower end of the sludge hopper, ; A filter bag which is wound around a rotating roller supported on the frame to perform an infinite rotation and transports the sludge discharged from the sludge discharge port rearward through a lower portion of the sludge discharge port; A flat roller rotatably coupled to the left and right side plates of the hopper so as to be positioned with a gap between a portion of the filter cloth passing through the lower portion of the sludge discharge port and the sludge passing through the gap to a uniform thickness; A lifting member located at a lower portion of the filter cloth so as to abut the portion of the filter cloth passing through the lower portion of the sludge discharge port; And elevating means installed on the frame for raising or lowering the elevation member toward the filter cloth.

The elevating means includes an upper bracket fixed to the left and right side plates of the elevating member and a lower bracket fixed to the frame so as to be positioned below the upper bracket; A rod-shaped bolt passing through the upper bracket and the lower bracket and having upper and lower ends formed with threads; A pair of upper nuts fastened to an upper end of the rod-shaped bold with the upper bracket interposed therebetween; And a pair of lower nuts fastened to the lower end of the rod-shaped bolt with the lower bracket interposed therebetween.

A scale guide is provided on the lower surface of the upper nut positioned below the upper bracket among the pair of upper nuts.

The elevating member includes a body to which the elevating means is coupled; And a filter cloth contact plate fixed on an upper surface of the body and having a width narrower than a distance between the left and right frames spaced along the width direction of the filter cloth among four corners of the four corners surrounding the filter cloth and surrounding the sludge discharge port.

The front and rear frames spaced apart from each other in the moving direction of the filter cloth are positioned higher than the left and right frames.

Wherein a pair of crushing rollers provided with crushing blades are coupled to the upper and lower side plates of the hopper so as to be parallel to each other and located above the flat rollers in a forward and backward direction, And the pair of crushing rollers are connected to rotate in opposite directions to each other.

The electroosmotic dehydrator according to the second embodiment of the present invention is a horizontal transfer type electroosmotic dehydrator having an apparatus capable of uniformly supplying and detecting the amount of sludge. A device for uniformly supplying and detecting the amount of the sludge includes a sludge inlet and a sludge outlet at upper and lower ends, a pair of feeding rollers for rotating the sludge in opposite directions at the lower portion of the sludge inlet and pushing the sludge toward the sludge outlet, A sludge hopper having a flat roller for spreading the sludge having passed through the sludge outlet to a uniform thickness while rotating at a lower portion of the feeding roller; A plurality of weight sensing means installed in a frame forming a frame of the horizontal transfer electro-osmotic dehydrator to support the sludge hopper at various points and to sense the weight of the sludge hopper at each point; A filter bag which is wound around a rotating roller supported on the frame to perform an infinite rotation and transports the sludge backward through a lower portion of the sludge outlet and a lower portion of the flat roller; A filter support member provided on the frame to support a portion of the filter cloth passing through the lower portion of the sludge discharge port and the lower portion of the flat roller below; And a controller for controlling operation of the horizontal transfer type electroosmotic dehydrator.

Each of the weight sensing means includes: a pedestal installed in the frame; A load cell provided on an upper surface of the pedestal; A load cell pressing member having a contact plate contacting the load cell at its lower end and having an upper end fixed to the hopper; And a plurality of rods having a lower end fixed to the pedestal and having an upper end inserted into the insertion hole provided in the contact plate.

The controller repeats the sludge supply cycle at predetermined time intervals. The controller operates the feeding roller, the flat roller and the rotating roller at the start of the sludge supply cycle and stops the feeding roller, the flat roller and the rotating roller at the end of the sludge supply cycle. The controller may calculate the weight value detected by each of the weight detecting means at the end of the sludge supply cycle from a pre-weight sum of the weight values sensed by the weight detecting means at the start time of the sludge supply cycle The process of calculating the sludge supply amount per cycle by subtracting the post-weighing weight is performed every time the sludge supply cycle is performed.

The controller may be configured to recognize the weight value detected by each of the plurality of weight detecting means as zero when the sludge hopper is empty.

The controller may be arranged to accumulate the sludge supply amount per cycle for a predetermined period.

The controller may determine whether the sludge supply amount per cycle is out of a predetermined range every time the sludge supply cycle is performed, and output an abnormal signal when it is determined that the sludge supply amount per cycle is deviated.

The electroosmotic dehydrator according to the third embodiment of the present invention is provided with a wet steam discharging device. The wet vapor discharging device is provided in the electroosmotic dehydrator so that the falling sludge cake separated from the filter cloth moving backward in the dewatering region of the electroosmotic dehydrator flows in and has a discharge passage for discharging the introduced sludge cake at one end Casing; And a sludge cake inside the casing is rotatably coupled to the casing so as to rotate in a direction opposite to the direction of the casing, A pair of paddle conveyors arranged to move toward the discharge passage; And a rear air intake hood installed in the electro-osmotic dehydrator to be positioned above the casing and connected to the intake pipe.

Wherein one of the pair of paddle conveyors comprises: a rotary shaft coupled with the casing; And a plurality of paddles fixed to the outer surface of the rotating shaft so as to be separated from each other in the longitudinal direction and the circumferential direction of the rotating shaft and being pivoted in the same direction with respect to imaginary lines extending along the circumferential direction of the rotating shaft do.

And the other one of the pair of paddle conveyors includes a neighboring rotary shaft coupled with the casing to be adjacent to the rotary shaft; And another plurality of paddles fixed to the neighboring rotary shafts so as to be separated in the longitudinal direction and the circumferential direction of the neighboring rotary shafts and being rotated in a direction opposite to the direction in which the plurality of paddles are rotated.

The casing is provided so as to extend in a left-right direction perpendicular to the moving direction of the filter cloth, and is provided to have an opened upper surface. Among the rims surrounding the open upper surface of the casing, barrier ribs are provided at the rear edge, which extends in the left-right direction and is located at the rearmost position.

The wet vapor discharging device may be provided in a horizontal transfer type electroosmotic dehydrator. In this case, left and right air intake hoods connected to the intake pipe are provided on upper left and right ends of the positive electrode plate positioned above the dehydration zone of the horizontal transfer electro-osmotic dehydrator.

The following effects can be obtained by the electroosmotic dehydrator according to the first embodiment of the present invention, which includes a device capable of controlling the thickness of the sludge and supplying the same uniformly.

First, since no member such as a conventional cover plate is required for uniform supply of the sludge and adjustment of the thickness, the conventional problems caused by the cover plate do not occur at all.

In addition, manual height setting of the elevating member used for controlling the thickness of the sludge can be easily and accurately performed, so that the thickness of the sludge can be adjusted easily and precisely.

Further, since the filter cloth contact plate of the upper lifting and lowering member can be raised to the inside of the sludge discharge port at the lower end of the hopper, the thickness of the sludge can be adjusted to be as thin as desired, and the filter cloth can be infinitely rotated without interruption.

Further, it is possible to rotate both the flat roller and the pair of crushing rollers by only one driving means, and it is easy to equalize the thickness of the sludge because the crushed sludge is finely crushed while passing between the pair of crushing rollers .

According to the electroosmotic dehydrator of the second embodiment of the present invention having the device capable of uniformly supplying and detecting the amount of the sludge, the following effect occurs.

First, the supply amount of the sludge supplied from the sludge hopper provided in the electroosmotic dehydrator can be easily confirmed every time the sludge is supplied.

In addition, the amount of sludge contained in the sludge hopper can be confirmed in real time.

It is also possible to easily ascertain the amount of sludge treated by the electroosmotic dehydrator during a day, a week, or a month, and so on.

Further, whether or not a problem occurs in the supply path of the sludge can be easily confirmed every time the sludge is supplied from the sludge hopper.

According to the electroosmotic dehydrator of the third embodiment of the present invention having the wet steam discharging device, the following effects are produced.

First, as much moisture vapor as possible can be evaporated from the sludge cake separated from the filter cloth and discharged to the outside, ultimately improving the dewatering efficiency of the electroosmotic dehydrator.

In addition, even if a wet steam discharging device is provided, the size of the electro-osmotic dehydrator does not become too large.

In addition, the sludge cake separated from the filter cloth is prevented from dropping to the outside of the casing, and the wet steam evaporating from the sludge cake can be guided to the rear intake hood.

In addition, the wet steam generated when the sludge is dewatered in the dewatering region of the horizontal transfer type electroosmotic dehydrator can also be collected and discharged to the outside.

FIG. 1 is a cross-sectional view illustrating an apparatus capable of adjusting the thickness of the sludge provided in the electroosmotic dehydrator according to the first embodiment of the present invention.

FIG. 2 is a partially exploded perspective view showing the elevating member and elevating means shown in FIG. 1. FIG.

Fig. 3 is a perspective view showing the rod-shaped bolt shown in Fig. 2. Fig.

4 is a cross-sectional view illustrating an apparatus capable of uniformly supplying sludge and detecting the amount of supplied sludge provided in the electroosmotic dehydrator according to the second embodiment of the present invention.

5 is an exploded perspective view showing the weight sensing means shown in FIG.

6 is a perspective view showing the filter cloth supporting member shown in Fig.

FIG. 7 is a cross-sectional view schematically showing an electrode plate provided behind the sludge hopper shown in FIG. 4. FIG.

FIG. 8 is a perspective view illustrating a wet chemical vapor discharging apparatus provided in an electroosmotic dehydrator according to a third embodiment of the present invention.

9 is a plan view showing a paddle conveyor installed inside the casing shown in Fig.

10 is a front view showing a state in which the wet vapor discharging device of FIG. 8 is installed in the horizontal transfer type electroosmotic dehydrator.

Fig. 11 is a front view showing the state in which the wet-type steam discharging device of Fig. 8 is installed in the drum type electro-osmotic dehydrator.

Hereinafter, embodiments of the electroosmotic dehydrator according to the present invention will be described in detail with reference to the drawings. It is to be understood that the terminology or words used herein are not to be construed in an ordinary sense or a dictionary, and that the inventor can properly define the concept of a term to describe its invention in the best possible way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

≪ Electroinfiltration dehydrator with a device capable of thickness control and uniform supply >

An apparatus 100 capable of controlling the thickness of the sludge and uniformly supplying the sludge provided in the electroosmotic dehydrator according to the first embodiment of the present invention, that is, the horizontal transfer electro-osmotic dehydrator, will be described with reference to FIGS. 1 to 3 . The reference numerals recited in the description of the first embodiment below are defined in Figs.

As shown in FIG. 1, the apparatus 100 capable of adjusting the thickness of the sludge and uniformly supplying the sludge includes a hopper 110, a filter cloth 140, a flat roller 120, an elevating member 150, (160).

The frames 102, 104, and 106 constituting the overall frame of the horizontal transfer electro-osmotic dehydrator include a longitudinal frame 102 extending in the front-back direction and spaced apart in parallel to the left and right direction, and a transverse frame 104 And vertical frames 106 supporting vertical and horizontal frames 102 and 104 with upper hopper 110 secured to longitudinal frame 102. The hopper 110 has a sludge inlet 112 to which the sludge is introduced at the upper end and a sludge outlet 114 at the lower end for discharging the introduced sludge.

The filter cloth 140 is wound around a plurality of rotating rollers 142 rotatably provided on the longitudinal frame 102 and when one of the rotating rollers 142 is rotated by a driving means (not shown) such as a motor It will rotate infinitely. During this infinite rotation, the filter cloth 140 passes under the sludge outlet 114 of the hopper 110. Therefore, the sludge discharged to the sludge discharge port 114 falls into the filter cloth 140 and moves backward together with the filter cloth 140.

(Not shown) of the horizontal transfer type electroosmotic dehydrator are installed at the rear of the hopper 140. The sludge which is placed on the filter cloth 140 and moved backward is disposed between the positive plates and the negative plates And then the voltage is applied while being pressed between the positive plates and the negative plates to be dehydrated. During dehydration, the filtrate falls through the filter cloth 140, while the sludge does not pass through the filter cloth 140 and remains in the filter cloth 140. The specific constitution of the above positive electrode plates and the negative electrode plates and the principle of the above dehydration are well known.

The flat roller 120 is for spreading the sludge dropped by the filter cloth 140 to a uniform thickness. The flat rollers 120 are located inside the hopper 110 and have left and right ends rotatably coupled to the left and right side plates of the hopper. Driving means (not shown) such as a motor is connected to either end of the right and left ends of the flat roller 120. When the driving means is operated, the flat roller 120 is rotated in one direction .

The gap between the filter cloth 140 and the flat roller 120 is formed because the flat roller 120 is located above the filter cloth 140 passing through the lower portion of the sludge discharge port 114. The sludge falling into the filter cloth 140 is pushed by the flat roller 120 and spreads to a uniform thickness when passing through the gap.

The upper flat roller 120 is made of a rubber material so that the sludge is not likely to be adhered to the surface thereof. However, it is preferable that the scraper 122 is provided to more reliably prevent the sludge from being attached to the surface of the flat roller 120. In this case, the scrapers 122 may be fixed to the back plate of the hopper 110, or may be fixed to the peripheral member through the back plate of the hopper 110 from the back of the hopper 110. In addition, the front end of the scraper 122 is provided so as to abut the surface of the flat roller 120 where the upper gap is located as shown in Fig. When the scraper 122 is provided, even if the sludge pressed in the upper gap is deposited on the surface of the flat roller 120, it is separated from the surface of the flat roller 20 by the scraper 122, It becomes movable.

The elevating member 150 is supported by the elevating means 160 so as to be positioned below the filter cloth 140 passing through the sludge discharge port 114. When the elevating means 160 is operated, The vertical position can be changed. When the height setting is completed, the lifting member 150 is brought into contact with the portion of the filter cloth 140 passing through the sludge discharge port 114, so that even if the sludge is pushed by the flat roller 120, The sludge is uniform and can be spread to a desired thickness.

The elevating means 160 is provided for setting the height of the elevating member 150 and is provided in two pairs, one pair on each of the left and right sides of the elevating member 150. The operator can adjust the height of the elevating member 150 by operating the elevating means 160 and fix the elevating member 150 to the height. One end of the elevating means 160 is coupled to the longitudinal frame 102 and the other end is coupled to the left and right side plates of the elevation member 150.

In the prior art disclosed in Korean Patent No. 10-0956614 (Sludge Uniform Feeding Apparatus), a separate cover plate is provided for adjusting the thickness of the uniformly spreaded sludge. Therefore, it is inconvenient to separately provide a cover plate, And the sludge adhered to the cover plate. However, in the first embodiment of the present invention as described above, the thickness of the sludge can be adjusted by setting the height of the elevating member 150. When the elevation of the elevating member 150 is completed, It is possible to uniformly spread while passing, and no member such as a conventional cover plate is required for uniform supply and thickness control of the sludge. Therefore, according to the first embodiment of the present invention, the conventional problems caused by the cover plate do not occur at all.

Hereinafter, additional features of the first embodiment of the present invention will be described in detail.

The elevating means 160 includes an upper bracket 162a and a lower bracket 162b as shown in FIG. The pair of upper brackets 162a are provided on the left side plate of the elevating member 150 and the other pair is fixed on the right side plate of the elevating member 150. [ The lower bracket 162b is provided in the same number as the upper bracket 162a and is fixed to the longitudinal frame 102 so as to be positioned below the upper bracket 162a. Accordingly, the pair of lower brackets 162b are fixed to the left longitudinal frame 102, and the remaining pair of the lower brackets 162b are fixed to the right longitudinal frame 102. [

The lifting means 160 also includes a rod-shaped bolt 168. The bolt 168 extends in the vertical direction and penetrates both the upper bracket 162a and the lower bracket 162b. At the upper and lower ends of the bolt 168, threads are provided.

The elevating means 160 also includes a pair of lower nuts 164b and 166b for fixedly connecting the lower end of the bolt 168 to the lower bracket 162b. The upper lower nut 164b is first fastened to the lower end of the upper bolt 168 and then the lower end of the bolt 168 is inserted into the lower bracket 162b and the lower lower nut 166b is fastened to the lower end of the bolt 168 The lower bracket 162b is inserted between the pair of lower nuts 164b and 166b and the lower end of the bolt 168 is fixed to the lower bracket 162b .

The elevating means 160 also includes a pair of upper nuts 164a and 166a for fixedly connecting the upper end of the bolt 168 to the upper bracket 162a. The lower upper nut 166a is first fastened to the upper end of the upper bolt 168 and then the upper end of the bolt 168 is fastened to the upper bracket 162a and the upper upper nut 164a is fastened to the upper end of the bolt 168 The upper bracket 162a is inserted between the pair of upper nuts 164a and 166a and the upper end of the bolt 168 is fixed to the upper bracket 162a .

In order to adjust the height of the lifting member 150, the operator first loosens the upper upper nut 164a, rotates the lower upper nut 166a to place the lifting member 150 at a desired height, The upper upper nut 164a may be tightened again.

When the height of the elevating member 150 is adjusted through the elevating means 160 described above, the worker manually rotates the lower upper nut 166a. At this time, the height of the plurality of lower upper nuts 166a is adjusted to be the same It is not easy. 3, a scale guide 168a is provided on the surface of the bolt 168 located between the upper and lower ends of the bolt 168 and a scale guide member 167 is provided on the lower surface of the lower upper nut 166a . Then, the worker can turn the lower upper nut 166a by turning the lower upper nut 166a until the lower end of the scale guide member 167 reaches the desired scale, so that the manual height setting of the elevation member 150 can be easily and accurately performed.

The scale 168a may be formed by attaching a ruler tape to the surface of the bolt 168 or may be formed by engraving a scale on the surface of the bolt 168. [ The graduation guide member 167 may be provided in the form of a hollow tube through which the bolt 168 is passed and may be integrally formed with the lower upper nut 166a or may be separately manufactured and assembled to the lower upper nut 166a.

Meanwhile, the elevating member 150 includes a body 152. The upper bracket 162a is fixed to the left and right side plates of the body 152 as shown in FIG. For weight reduction and material reduction, the body 152 is preferably provided in a hollow square box shape as shown in FIG. In addition, the body 152 may be provided in the form of a rectangular box in which the lower plate is removed. In addition, the body 152 may have various forms in which the upper bracket 162a and the lower filter contact plate 154 may be fixed.

The lifting member 150 also includes a filter cloth contact plate 154. The filter cloth contact plate 154 is fixed on the upper surface of the body 152 as shown in FIG. 2, and is in contact with the lower surface of the filter cloth 140. The width of the filter cloth contact plate 154 is set to be smaller than the distance between the left and right edges of the filter cloth 114 in the width direction of the filter cloth 114 (i.e., the width of the sludge outlet 114) among the four edges surrounding the sludge outlet 114 .

The upper bracket 162a is provided on the left and right side plates of the body 152. Due to the restriction that the upper bracket 162a should be positioned vertically above the lower bracket 162b, The width of the sludge outlet 114 is generally greater than the width of the sludge outlet 114. In this case, since the body 152 is caught by the left and right edges of the sludge discharge port 114 and can not be raised to the inside of the sludge discharge port 114, there is a limit in controlling the thickness of the sludge to be thin. However, if the filter cloth contact plate 154 as described above is provided, the filter cloth contact plate 154 can be raised to the inside of the sludge discharge port 114, so that the thickness of the sludge can be adjusted as thin as desired without limit.

When the upper filter cloth contact plate 154 rises to the inside of the sludge discharge port 114, the filter cloth 140 also rises up to the inside of the sludge discharge port 114. In this case as well, the filter cloth 140 can rotate infinitely do. Therefore, the front and rear edges spaced along the moving direction of the filter fabric 140 among the four edges surrounding the sludge outlet 114 are preferably located higher than the left and right edges thereof. As shown in FIG. 1, the passages 114a and 114b through which the filter cloth 140 passes can be formed on the front and rear edges of the upper portion of the filter cloth. Therefore, even if the filter cloth contact plate 154 rises up to the inside of the sludge outlet 114, The infinite rotation of the rotor 140 can be performed without interruption.

A pair of crushing rollers 130a and 130b having a plurality of crushing blades 132a and 132b on the outer circumferential surface may be provided in the upper part of the flat roller 120 in the hopper 110. [ In this case, the pair of crushing rollers 130a and 130b have right and left ends rotatably engaged with the left and right side plates of the hopper 110, and extend in the left and right directions in parallel to each other, .

Further, the pair of crushing rollers 130b are coupled to each other through a means such as a spur gear so that when one 130a rotates counterclockwise as shown in Fig. 1, the other one 130b automatically rotates clockwise . One of the pair of crushing rollers 130a and 130b is connected to the flat roller 120 through a chain or the like and is automatically rotated when the flat roller 120 rotates counterclockwise as shown in FIG. Direction.

When the crushing rollers 130a and 130b are provided as described above, first, the pair of crushing rollers 130a and 130b can be rotated only by the driving means for rotating the flat rollers 120. Second, The sludge injected into the crusher 110 is crushed finely while passing through the pair of crushing rollers 130a and 130b, thereby making it easy to make the thickness of the sludge uniform.

≪ Electroinfiltration dehydrator equipped with a device capable of uniform supply and detection of supply amount >

An apparatus 100 capable of uniformly supplying and detecting the amount of sludge provided in the electroosmotic dehydrator according to the second embodiment of the present invention, that is, the horizontal transfer electroosmotic dehydrator, will be described with reference to FIGS. 4 to 7 . The reference numerals recited in the description of the second embodiment below are defined in Figs.

4, the apparatus 100 capable of uniformly supplying and detecting the amount of the sludge includes a sludge hopper 110, a plurality of weight sensing means 130, a filter cloth 140, a filter support member 150 And a controller (not shown).

The frames 102, 104, and 106 constituting the overall frame of the horizontal transfer electro-osmotic dehydrator include longitudinal frames 102 extending in the front-back direction and parallel to the left and right direction, A frame 104 and vertical frames 106 supporting vertical and horizontal frames 102 and 104 wherein the upper sludge hopper 110 is installed in the longitudinal frame 102 via weight sensing means 130 .

The upper sludge hopper 110 has a sludge inlet 112 to which the sludge S (see FIG. 7) is introduced at the upper end and a sludge outlet 114 at the lower end for discharging the introduced sludge S.

The sludge hopper 110 also includes a pair of feeding rollers 116a and 116b positioned below the sludge inlet 112. The feeding rollers 116a and 116b have left and right ends rotatably coupled to the left and right side plates of the hopper 110 and extend in the left and right directions in parallel to each other and are disposed to be spaced away from each other in the forward and backward directions at similar heights. The feeding rollers 116a and 116b are coupled to each other through a means such as a spur gear so that when one 116a rotates counterclockwise as shown in Fig. 4, the other one 116b automatically rotates clockwise do.

The sludge S injected into the sludge hopper 110 generally has a water content of about 80%, which sludge accumulates in a lump form due to viscosity. Therefore, the sludge S in the sludge hopper 110 can not move toward the sludge discharge port 114 itself even if it receives gravity. Thus, the feeding rollers 116a and 116b are provided in the sludge hopper 110. [ In this case, when the feeding rollers 116a and 116b rotate in opposite directions to each other, the sludge S is pushed by the feeding rollers 116a and 116b while passing between the feeding rollers 116a and 116b, .

The sludge hopper 110 also includes flat rollers 118 positioned under the feeding rollers 116a and 116b. The flat rollers 118 are located inside the hopper 110 and have left and right ends rotatably coupled to the left and right side plates of the hopper. Driving means (not shown) such as a motor is connected to either end of the right and left ends of the flat roller 118. When the driving means is operated, the flat roller 118 is rotated in one direction .

This flat roller 118 may be provided to rotate in the same direction by means such as a chain with either one 116a of the pair of feeding rollers 116a and 116b, All of the feeding rollers 116a and 116a can be rotated by only the driving means.

The gap between the filter cloth 140 and the flat roller 118 is formed because the flat roller 118 is located above the portion of the filter cloth 140 passing through the lower portion of the sludge discharge port 114. The sludge S supplied to the filter cloth 140 is pushed by the flat roller 118 and spreads to a uniform thickness when passing through the gap.

The upper flat roller (118) is provided with a rubber material on the surface thereof so that the sludge (S) is not easily adhered to the surface. However, in order to more reliably prevent the sludge S from being attached to the surface of the flat roller 118, a scraper 118a is usually provided. In this case, the scrapers 118a may be fixed to the back plate of the sludge hopper 110, or may be fixed to the peripheral member so as to pass through the rear plate of the sludge hopper 110 from the rear of the sludge hopper 110. In addition, the front end of the scraper 118a is provided so as to abut the surface of the flat roller 118 where the upper gap is located as shown in Fig. The sludge S can be separated from the surface of the flat roller 118 directly by the scrapers 118a and moved backward together with the filter cloth 140 even if the pressed sludge in the upper gap is deposited on the surface of the flat roller 118 .

The filter cloth 140 is wound around a plurality of rotating rollers 142 rotatably provided on the longitudinal frame 102 and when one of the rotating rollers 142 is rotated by a driving means (not shown) such as a motor It will rotate infinitely. During this infinite rotation, the filter cloth 140 is passed through the lower portion of the sludge outlet 114 of the sludge hopper 110. Therefore, the sludge discharged to the sludge discharge port 114 is supplied to the filter cloth 140 and moves backward together with the filter cloth 140.

7, the positive electrode plates 10a and the negative electrode plates 10b of the horizontal transfer type electroosmotic dehydrator are installed at the rear of the hopper 140, and the sludge S are placed between the positive electrode plates 10a and the negative electrode plates 10b and then pressed between the positive electrode plates 10a and the negative electrode plates 10b to be dehydrated. During the dehydration, the filtrate falls through the filter cloth 140 and evaporates in the form of a wet vapor, while the sludge S does not pass through the filter cloth 140 and remains in the filter cloth 140. The specific construction of the above-mentioned positive electrode plates 10a and the negative electrode plates 10b and the principle of the above dehydration are well known.

4 and 6, the filter support member 150 is installed in the longitudinal frame 102 so as to be positioned below the filter cloth 140 passing through the lower portion of the sludge discharge port 114. [ The filter cloth support member 150 that has been set up supports the filter cloth 140 so as to abut the lower surface of the filter cloth 140 passing through the lower portion of the sludge discharge port 114. Then the sludge S is fed to the flat rollers 118 The sludge S is uniform and can be spread to a desired thickness because the filter cloth 140 is not shed by the filter cloth supporting member 150 even if the sludge S is depressed.

The coupling between the filter support member 150 and the longitudinal frame 102 may be via the rod-shaped bolt 156 and the nuts 158a and 158b as shown in FIG. The rod-shaped bolt 156 is a member having upper and lower ends provided with threads, and is installed to penetrate both the upper bracket 154a and the lower bracket 154b. The upper and lower brackets 154a are provided in the same number as the upper brackets 154a and are fixed to the longitudinal frames 102. The top brackets 154a are fixed to the left and right side plates of the filter cloth support member 150, . The nuts 158a and 158b include a pair of upper nuts 158a and a pair of lower nuts 158b. The upper nuts 158a are fastened to the upper end of the rod-shaped bolts 156 so that the upper brackets 154a are sandwiched therebetween and the lower nuts 158b are fastened to the rod-shaped bolts 156 156, respectively. Needless to say, the above-described coupling method is merely an example for coupling the filter cloth supporting member 150 to the longitudinal frame 102, so that other coupling methods can be adopted.

Hereinafter, a plurality of weight sensing means 130 and a controller (not shown), which are features of the second embodiment of the present invention, will be described.

The weight sensing means 130 is installed in the longitudinal frame 102 to support the sludge hopper 110 at various points (four corners in the figure). 5, each weight sensing means 130 includes a pedestal 132, a load cell 134, a load cell urging member 136, and a plurality of rods 135. As shown in FIG.

The pedestal 132 includes an upper plate 132a, a lower plate 132b, and a plurality of legs 132c. The lower plate 132b is fixed to the upper surface of the longitudinal frame 102 through means such as a bolt and the upper plate 132a is positioned on the upper plate 132b. The plurality of legs 132c has an upper end fixed to the upper plate 132a and a lower end fixed to the lower plate 132b. This pedestal 132 is only one example of the shape that can support the load cell 134. [ Other forms of supporting the load cell 134 may also be used as the pedestal 132, of course.

The load cell 134 is a member for outputting a pressing force as an electrical signal and is fixed to the upper surface of the upper plate 132a. The load cell 134 has a button at its upper end, and when the button is pressed, an electrical signal of the pressing force is transmitted to the controller through the wire 134a.

The load cell pressing member 136 has a contact plate 136b at the lower end that contacts the button of the load cell 134 and a bolt 136a fixed to the contact plate 136b so as to extend upward from the contact plate 136b . The upper end of the bolt 136a has a thread and penetrates the bracket 110a fixed to the sludge hopper 110. [ The upper end of the bolt 136a is fixed to the sludge hopper 110 when a pair of nuts 138 are fastened to the upper end of the bolt 136a so that the upper bracket 110a is sandwiched therebetween.

The load cell urging member 136 applies a pressing force equivalent to the weight of the sludge hopper 110 to the load cell 134 as it is. Therefore, when the output of the load cell 134 is checked, the weight of the sludge hopper 110 can be known. If the four load cells 134 are provided as in the present embodiment, the total weight of the sludge hopper 110 can be calculated by adding the outputs of the four load cells 134.

The plurality of rods 135 are provided on the main surface of the load cell 134 to maintain the position of the load cell pressing member 136. The lower end of the rod 135 may be secured to the upper plate 132a of the pedestal 132 through a means such as a pair of nuts 135b or through welding. The upper end of the rod 135 is inserted into an insertion hole provided in the contact plate 136a. When these loads 135 are provided, the left-right direction and the back-and-forth position of the load cell pressing member 136 can be maintained as it is and there is no member that interferes with downward pushing of the load cell pressing member 136, ) Weight can be applied to the load cell 134 as it is.

Since the upper end of the load cell pressing member 136 is fixed to the bracket 110a fixed to the sludge hopper 110, there is no fear that the contact plate 136b slips upward from the upper rods 135. [ However, it is preferable that the nut 135a is fastened to the upper end of the rod 135 so as to be positioned above the contact plate 136b.

The weight of the sludge S supplied from the sludge hopper 110 can be known by measuring the weight of the sludge filled hopper 110 in real time when the weight sensing means 130 as described above is provided. . And if the amount of the sludge S supplied can be known, various advantages may be involved. For example, if the sludge supply amount is known, it can be determined whether or not the supply amount is smaller than a preset supply amount. If it is determined that the supply amount is insufficient, it can be known that an abnormality occurs in the sludge supply path. Also, knowing the sludge supply amount can easily calculate daily sludge throughput, monthly sludge throughput, annual sludge throughput and so on. In addition, if means for detecting the weight of the sludge S dehydrated in the electrode plates 10a and 10b are added, it is possible to determine how much the filtrate of the sludge is lost in the dehydration process, Recognition can be quantitatively calculated.

The controller (not shown) is provided to entirely control the operation of the horizontal transfer type electroosmotic dehydrator. Here, only the control contents related to the present embodiment will be described, and the description of the remaining control contents will be omitted.

The controller repeats the sludge supply cycle at a predetermined time interval (hereinafter referred to as " dehydration time "). For example, after the first sludge supply cycle is performed, the sludge supply cycle is stopped during the dehydration time, and the second sludge supply cycle is performed when the dehydration time is ended. During the dewatering time, the electrode plates 10a and 10b dehydrate the sludge S, and at this time, the supply of the sludge S should not be performed, so that a dehydration time is required between the sludge supply cycles.

At the start of the sludge supply cycle, the controller operates the feeding rollers 116a and 116b and the flat rollers 118. [ If the flat rollers 118 are connected to one of the feeding rollers 116a and 116b by a chain and the feeding rollers 116a and 116b are connected by a spur gear as described above, The upper feeding roller 116a and the flat roller 118 can be operated by operating the driving means for driving the upper feeding roller 116a, 116b.

When the feeding rollers 116a and 116b are rotated, the sludge S in the sludge hopper 110 moves downward. At this time, the sludge S moved downward is placed on the filter cloth 140 so that the electrode plates 10a, 10b. Thus, at the beginning of the sludge supply cycle, the controller also drives the rotating roller 142.

The controller calculates the preliminary weight immediately before or at the beginning of the sludge supply cycle. Here, the pre-weight means a sum of the weight values sensed by the weight sensing means 130 at the start of the sludge supply cycle. The weight of the sludge S is the sum of the weight of the sludge hopper 110 and the weight of the sludge S contained in the sludge hopper 110 when the sludge S starts to be supplied.

The sludge S in the sludge hopper 110 is placed on the filter cloth 140 and moved backward while the sludge S is discharged from the electrode plates 10a, 10b in the forward and backward directions. When the movement of the upper section P is completed, the controller terminates the sludge supply cycle.

At the end of the sludge supply cycle, the controller stops the feeding rollers 116a and 116b and the flat rollers 118 and also stops the rotating rollers 142. [ Therefore, when the sludge supply cycle is completed, the sludge S is not supplied from the sludge hopper 110.

At the end or just after the end of the sludge supply cycle, the controller calculates the post-weighing. Here, the post-weight means a sum of the weight values sensed by the weight sensing means 130 at the end of the sludge supply cycle. Therefore, the weight of the sludge S is the sum of the weight of the sludge hopper 110 and the weight of the sludge S contained in the sludge hopper 110 when the supply of the sludge S is terminated.

When the calculation of the post-weight is completed, the controller calculates the sludge supply amount per cycle by subtracting the post-weight from the pre-weight. The preliminary weight is a sum of the weight of the sludge hopper 110 itself and the weight of the sludge S at the start of sludge supply and the post weight is the weight of the sludge hopper 110 itself and the weight of the sludge S The sludge supply amount per cycle is equal to the sum of the sludge supplied from the sludge hopper 110 when the sludge supply cycle is performed once ).

The sludge S is dehydrated by the electrode plates 10a and 10b and the new sludge S is supplied to the sludge hopper 110 while the dehydration time is progressed, . When the dewatering time has elapsed, the next sludge supply cycle is performed.

In the meantime, the preceding weight and the post weight include the self weight of the sludge hopper 110. However, the pre-weight and post-weight may not include the weight of the sludge hopper 110 itself, but may be made to include only the weight of the sludge S only. In this case, the controller is set to recognize the weight value detected by the weight detecting means 130 as zero (0) in the state where the sludge hopper 110 is empty. When the controller is set as described above, the amount of the sludge S contained in the sludge hopper 110 can be confirmed in real time.

The controller may be arranged to accumulate the sludge supply amount per cycle for a predetermined period. Then, according to the above setting period, the user can easily confirm the daily supply amount, the weekly supply amount, and the monthly supply amount.

In addition, the controller may determine whether the sludge supply amount per cycle is out of a predetermined range, and then output the abnormal signal to a separate alarm device or an operator's portable terminal according to a determination result. The fact that the sludge supply amount per cycle is out of the predetermined range means that the sludge supply amount is too small or too large in the cycle so that the operator can immediately recognize that an abnormality has occurred in the sludge supply path.

≪ Electro-osmotic dehydrator with wet steam discharging device >

Hereinafter, the wet steam discharging apparatus 100 provided in the electro-osmotic dehydrator according to the third embodiment of the present invention will be described with reference to FIGS. 8 to 11. FIG. The reference numerals recited in the description of the third embodiment below are defined in Figs. 8 to 11. Fig.

The wet vapor discharging device 100 includes a casing 110, a pair of paddle conveyors 130a and 130b and a rear suction hood 150 as shown in FIG.

The casing 110 is installed in the electroosmotic dehydrators 200 and 300 so that the sludge cake 10 separated from the filter cloth 20 moving backward in the dewatering region of the electroosmotic dehydrators 200 and 300 can be introduced .

Here, the dehydration zone means an area where the sludge is dewatered by the electroosmosis method. If the electroosmotic dehydrator 200 or 300 is a horizontally-conveying electroosmotic dehydrator 200, as shown in FIG. 10, the filter cloth 20 that performs an infinite rotation supports the sludge supplied from the sludge supply device 220 And then temporarily stopped between the positive electrode plate 230 and the negative electrode plate 240. The area between the positive electrode plate 230 and the negative electrode plate 240 becomes a dehydrating region. When the sludge is placed in the dewatering region, the anode plate 230 is lowered to pressurize the sludge, and then a voltage is applied between the anode plate 230 and the cathode plate 240 to dehydrate the sludge placed in the dehydration region. When the sludge is dewatered, the positive electrode plate 230 rises and the filter cloth 20 starts to rotate infinitely again. Then, in the dewatering region, the dewatered sludge, that is, the sludge cake 10 moves backward from the dewatering region, And then falls into the casing 110. [0052]

If the electroosmotic dehydrator 200 or 300 is a drum type electroosmotic dehydrator 300, the filter cloth 20, which rotates infinitely as shown in FIG. 11, supports the sludge supplied from the sludge supply device 320 And then passes between the cathode drum 330 and the cathode cater 340. The area between the cathode drum 330 and the cathode cater 340 becomes a dehydrating area. And is dehydrated by a voltage applied between the cathode drum 330 and the cathode cater 340 when the sludge passes through the dewatering zone. The sludge dehydrated in the dehydrating zone, that is, the sludge cake 10 moves backward in the dehydrating zone, then separates from the filter cloth 20 and drops into the casing 110.

The upper surface 114 of the casing 110 is opened as shown in FIG. 8 so that the sludge cake 10 separated from the filter cloth 20 and falling can be introduced. The discharge passage 112 is provided at one end of the casing 110 so that the introduced sludge cake 10 can be discharged to the outside. 8 shows an example in which the upper discharge path 112 is provided on the lower left end of the casing 110. [

The casing 110 may be installed to extend in the left and right directions as shown in Figs. 8, 10 and 11. Since the filter cloth 20 moves backward from the dewatering area, it can be seen that the casing 110 extends in a direction perpendicular to the moving direction of the filter cloth 20. [ On the other hand, although not shown, the casing 110 may be provided so as to extend in the front-rear direction, that is, to extend rearward from the point where the sludge cake 10 falls from the filter fabric 20. In this case, the upper discharge passage 112 will be located at the lower end of the casing 110. [

The entire length of the electroosmotic dehydrators 200 and 300 becomes longer when the casing 110 is extended in the front-rear direction, and the width of the casing 110 is longer than that of the filter cloth 110. However, The size of the electroosmotic dehydrator dehydrators 200 and 300 must be increased. Therefore, it is preferable that the casing 110 is installed so as to extend in the left-right direction as shown in Figs. 8, 10, and 11.

In addition, when the casing 110 extends in the left-right direction, the open top surface 114 of the casing 110 is surrounded by front and rear rims extending in the left-right direction and right and left rims connecting the front and rear rims. As shown in Fig. 8, the partition wall 116 is provided as a vertical flat plate at the rear edge located further to the rear. This partition wall 116 can prevent some of the sludge cake 10 from falling off the casing 110 beyond the rear edge. In addition, the partition 116 serves to guide wet steam rising in the casing 110 toward the rear suction hood 150. On the other hand, left and right edges of the left and right ends of the barrier rib 116 and the open top surface 114 are fixed to a connecting plate 116a having a substantially triangular shape.

The partition wall 116 can prevent the sludge cake 10 from falling out of the casing 110 and guide the wet steam of the casing 110 toward the rear suction hood 150, Of course. For example, the barrier ribs 116 may be provided in the form of an inclined flat plate inclined forward, or may be provided in the form of a curved plate that extends vertically upward and is bent forward. In addition, the partition 116 may be provided so that a part of the upper end of the partition 116 is connected to the rear intake hood 150.

9, the front paddle transfer unit 130a and the rear paddle transfer unit 130b are disposed in the casing 110 as shown in FIG.

The front paddle feeder 130a includes a front rotation shaft 132a and a plurality of front paddles 134a. The front rotation shaft 132a is provided so as to extend in the left-right direction. The left and right ends of the forward rotation shaft 132a are rotatably coupled to the casing 110. [ At the right end of the forward rotation shaft 132a, a gear 136a located outside the casing 110 is fixed. The gear 136a may be provided at the left end of the forward rotation shaft 132a.

The plurality of front paddles 134a are fixed to the outer surface of the front rotation shaft 132a and are fixed so as to be separated in the longitudinal direction and the circumferential direction of the front rotation shaft 132a. For example, if there is a front paddle 134a, then the front paddle 134a is spaced left from either front paddle 134a and 90 degrees away in the circumferential direction.

Further, the plurality of front paddles 134a are all turned in the same direction with respect to imaginary lines extending along the circumferential direction of the front rotating shaft 132a. The direction in which the front paddle 134a is turned is set so that the front paddle 134a can transport the sludge cake 10 in the casing 110 in the left direction, i.e., the direction in which the discharge path 112 is located. For example, if the front swing shaft 132a is rotated in the clockwise direction (arrow direction in Fig. 9) as viewed from the left, the front paddle 134a is turned to the left with respect to the upper imaginary line as shown in Fig. 9 . The angle (A) at which the front paddle 134a is turned may be the same or slightly different for all the front paddles 134a.

The rear paddle conveyor 130b includes a rear rotating shaft 132b and a plurality of rear paddles 134b. The rear rotation shaft 132b is parallel to the front rotation shaft 132a and is adjacent to the rear of the front rotation shaft 132a. The left and right ends of the rear rotation shaft 132b are coupled to the casing 110 in a rotatable manner.

A gear 136b located on the outside of the casing 110 is fixed to the right end of the rear rotation shaft 132b. The gear 132b forms a spur gear with the right gear 136a of the front rotation shaft 132a . Therefore, the rear rotation shaft 132b and the front rotation shaft 132a rotate in opposite directions to each other. For example, when viewed from the left, as shown in FIG. 9, when the rear rotation shaft 132b rotates counterclockwise, the front rotation shaft 132a rotates clockwise.

The right end of the rear rotation shaft 132b is connected to a drive motor 138 located outside the casing 110 by a chain 139. Therefore, when the drive motor 138 rotates, the rear rotation shaft 132b rotates, and at this time, the front rotation shaft 132a rotates in the direction opposite to the rear rotation shaft 132b. Needless to say, the driving motor 138 may be connected to the front rotating shaft 132a and the chain 139. [

The plurality of rear paddles 134b are fixed to the outer surface of the rear rotating shaft 132b in the same manner as the front paddle 134a. However, the direction in which the rear paddle 134b is turned is opposite to the direction in which the front paddle 134a is turned, as shown in FIG. 9, so that even if the rear rotating shaft 132b rotates in the direction opposite to the front rotating shaft 132a, (134b) can transfer the sludge cake (10) from the casing (110) to the discharge passage (112).

On the other hand, the angle A at which the rear paddle 134b is turned may be the same or slightly different from that of all the rear paddles 134b. The angle A between the rear paddle 134b and the front paddle 134a may be the same or slightly different. Further, the front paddle 134a and the rear paddle 134b are arranged so as not to collide with each other at the time of rotation.

When the front and rear paddle conveyors 130a and 130b are provided inside the casing 110, the sludge cake 10 separated from the filter cloth 20 falls between the front and rear rotating shafts 132a and 132b, And is conveyed toward the discharge passage 112 while being broken by the front and rear paddles 134a and 134b. When the sludge cake 10 is broken, as much wet steam as possible from the sludge cake 10 evaporates and rises.

The rear suction hood 150 is installed in the electroosmotic dehydrators 200 and 300 so as to be positioned on the upper portion of the casing 110 as shown in FIGS. 8, 10 and 11. The rear intake hood 150 is connected to an intake pipe 152 provided with an intake fan (not shown). Therefore, the humid vapors evaporated from the sludge cake 10 in the casing 110 are sucked into the rear suction hood 150 and then discharged to the outside along the suction piping 152.

The wet electrodeposition apparatus 100 for electro-osmotic dehydrator as described above may be provided in the horizontal transfer electro-osmotic dehydrator 200 as shown in FIG. 10, or may be provided in the drum-type electroosmotic dehydrator 300 as shown in FIG.

When the horizontal wet type electro-osmotic dehydrator 200 is provided, the upper wet-type steam discharging device 100 may further include left and right suction hoods 154 connected to the suction pipe 152. As shown in FIG. 10, the left and right intake hoods 154 are located at the left upper end and the right upper end of the positive electrode plate 230 of the horizontal transfer type electroosmotic dehydrator 200, and are arranged in the front-rear direction. When the left and right intake hoods 154 are provided, wet steam rising from the left and right ends of the anode plate 230 can be sucked into the left and right intake hoods 154 and discharged to the outside when the sludge is dewatered in the dewatering region.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The electroosmotic dehydrator according to the present invention can be used in an industrial field for dewatering sludge.

Claims (18)

1. An electro-osmotic dehydrator comprising a horizontal transfer type electroosmotic dehydrator having an apparatus capable of controlling the thickness of the sludge and supplying the same uniformly,

   An apparatus capable of controlling the thickness of the sludge and supplying the sludge uniformly includes:

   A sludge hopper fixed to a frame forming the frame of the horizontal transfer type electroosmotic dehydrator and having a sludge charging port for charging sludge at an upper end thereof and a sludge discharge port for discharging sludge at a lower end;

   A filter bag which is wound around a rotating roller supported on the frame to perform an infinite rotation and transports the sludge discharged from the sludge discharge port rearward through a lower portion of the sludge discharge port;

   A flat roller rotatably coupled to the left and right side plates of the hopper so as to be positioned with a gap between a portion of the filter cloth passing through the lower portion of the sludge discharge port and the sludge passing through the gap to a uniform thickness;

   A lifting member located at a lower portion of the filter cloth so as to abut the portion of the filter cloth passing through the lower portion of the sludge discharge port; And

   And elevating means provided on the frame for raising or lowering the elevation member toward the filter cloth.
2. The method according to claim 1,

   The elevating means includes:

   An upper bracket fixed to the left and right side plates of the elevating member and a lower bracket fixed to the frame so as to be positioned below the upper bracket;

   A rod-shaped bolt passing through the upper bracket and the lower bracket and having upper and lower ends formed with threads;

   A pair of upper nuts fastened to an upper end of the rod-shaped bold with the upper bracket interposed therebetween; And

   And a pair of lower nuts fastened to the lower end of the rod-shaped bolt with the lower bracket interposed therebetween.
3. 3. The method of claim 2,

   Wherein a scale is provided at a portion between the upper and lower ends of the rod type bolt and a scale guide member is provided on the lower surface of the upper nut positioned below the upper bracket among the pair of upper nuts.
4. The method according to claim 1,

   The elevating member

   A body coupled to the elevating means; And

   And a filter cloth contact plate fixed on an upper surface of the body and having a width narrower than a distance between the left and right frames spaced along the width direction of the filter cloth among four corners of the four corners surrounding the filter cloth and surrounding the sludge discharge port.
5. 5. The method of claim 4,

   Wherein the front and rear edges spaced apart from each other in the moving direction of the filter cloth are positioned higher than the left and right edges of the four edges.
6. The method according to claim 1,

   Wherein a pair of crushing rollers provided with crushing blades are coupled to the upper and lower side plates of the hopper so as to be parallel to each other and located above the flat rollers in a forward and backward direction, And the pair of crushing rollers are connected to rotate in opposite directions to each other.
7. 1. An electro-osmotic dehydrator comprising a horizontally transporting electro-osmotic dehydrator having an apparatus capable of uniformly supplying and detecting the amount of sludge,

   An apparatus capable of uniformly supplying the sludge and detecting the amount of the supplied sludge,

   And a pair of feeding rollers for respectively pushing the sludge toward the sludge discharge port while rotating in opposite directions at a lower portion of the sludge feeding port and having a pair of upper and lower sludge feeding ports and a sludge discharge port, A sludge hopper having a flat roller for spreading the sludge having passed through the outlet to a uniform thickness;

   A plurality of weight sensing means installed in a frame forming a frame of the horizontal transfer electro-osmotic dehydrator to support the sludge hopper at various points and to sense the weight of the sludge hopper at each point;

   A filter bag which is wound around a rotating roller supported on the frame to perform an infinite rotation and transports the sludge backward through a lower portion of the sludge outlet and a lower portion of the flat roller;

   A filter support member provided on the frame to support a portion of the filter cloth passing through the lower portion of the sludge discharge port and the lower portion of the flat roller below; And

   And a controller for controlling operation of the horizontal transfer type electroosmotic dehydrator.
8. 8. The method of claim 7,

   Wherein each of the weight sensing means comprises:

   A pedestal installed in the frame;

   A load cell provided on an upper surface of the pedestal;

   A load cell pressing member having a contact plate contacting the load cell at its lower end and having an upper end fixed to the hopper; And

   And a plurality of rods having a lower end fixed to the pedestal and having an upper end inserted in an insertion hole provided in the contact plate.
9. 8. The method of claim 7,

   The controller comprising:

   The sludge supply cycle is repeatedly performed at predetermined time intervals,

   The feed roller, the flat roller and the rotating roller are operated at the start point of the sludge supply cycle,

   The feeding roller, the flat roller and the rotating roller are stopped at the end of the sludge supply cycle,

   The sludge supply cycle is started at the start of the sludge supply cycle from the preliminary weight added to the weight values sensed by the weight sensing means, And the amount of sludge supplied per cycle is calculated every time the sludge supply cycle is performed.
10. 10. The method of claim 9,

    Wherein the controller is configured to recognize the weight value detected by each of the plurality of weight detecting means as zero when the sludge hopper is empty.
11. 10. The method of claim 9,

    And the controller integrates the sludge supply amount per cycle for a predetermined period of time.
12. 10. The method of claim 9,

    Wherein the controller determines whether the sludge supply amount per cycle is out of a predetermined range every time the sludge supply cycle is performed and outputs an abnormal signal when it is determined that the sludge supply cycle is out of the predetermined range.
13. 1. An electro-osmotic dehydrator having a wet vapor discharging device,

    The wet vapor discharging device includes:

    A casing provided at the electroosmotic dehydrator so that a falling sludge cake separated from the filter cloth moving backward in the dewatering region of the electroosmotic dehydrator flows therein and having a discharge path for discharging the introduced sludge cake at one end;

    And a sludge cake inside the casing is rotatably coupled to the casing so as to rotate in a direction opposite to the direction of the casing, A pair of paddle conveyors arranged to move toward the discharge passage; And

    And a rear intake hood installed in the electro-osmotic dehydrator so as to be positioned above the casing and connected to the intake pipe.
14. 14. The method of claim 13,

    Wherein one of the pair of paddle conveyors comprises:

    A rotating shaft coupled with the casing; And

    And a plurality of paddles fixed to the outer surface of the rotating shaft so as to be separated from each other in the longitudinal direction and the circumferential direction of the rotating shaft and which are all turned in the same direction with respect to imaginary lines extending along the circumferential direction of the rotating shaft ,

    The other one of the pair of paddle conveyors comprises:

    A neighboring rotating shaft coupled with the casing to be adjacent to the rotating shaft; And

    And a plurality of paddles fixed to the neighboring rotary shafts so as to be separated from each other in the longitudinal direction and the circumferential direction of the neighboring rotary shafts and being pivoted in a direction opposite to the direction of rotation of the plurality of paddles.
15. 14. The method of claim 13,

    Wherein the casing is provided so as to extend in a left-right direction perpendicular to the moving direction of the filter cloth, and has an open top surface.
16. 16. The method of claim 15,

    And a partition wall is provided at a rear edge of the casing that extends in the left-right direction and is positioned at the rear most of the rims surrounding the open upper surface of the casing.
17. 17. The method according to any one of claims 13 to 16,

    Wherein the wet steam discharging device is provided in a horizontal transfer type electro-osmotic dehydrator.
18. 18. The method of claim 17,

    Wherein the left and right air intake hoods connected to the intake pipe are provided at upper left and right ends of the positive electrode plate positioned above the dehydration zone of the horizontal transfer electro-osmotic dehydrator.

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