KR101846826B1 - Equipment for feeding sludge uniformly and adjusting thickness of the sluldge - Google Patents

Abstract

The present invention relates to a device for performing thickness control and uniform supply of sludge comprising a sludge hopper, a filter cloth, a flat roller, an elevating member, and an elevating unit. The sludge hopper is fixed in a frame of a horizontal transfer type electroosmotic dehydrator, includes a sludge inputting unit for inputting the sludge in an upper end and includes a sludge discharging unit for discharging the sludge in a lower end. The filter cloth is infinitely rotated by being wound on a rotating roller supported in the frame and transmits the sludge discharged from the sludge discharging unit to a backside through a lower part of the sludge discharging unit. The flat roller is combined to left and right side plates of the hopper to be rotated by being separated at a gap from a part of the filter cloth passing the lower part of the sludge discharging unit and spreads the sludge passing the gap to a uniform thickness. The elevating member is positioned in a lower part of the filter cloth to be touched with the part of the filter cloth passing the lower part of the sludge discharging unit. The elevating unit is installed in the frame and increases or decreases the elevating member towards the filter cloth.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling the thickness of a sludge,

The present invention relates to a device capable of controlling the thickness of a sludge and supplying the sludge uniformly. More particularly, the present invention relates to a horizontal transfer type electroosmosis dehydrator capable of supplying sludge uniformly and controlling the thickness of supplied 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.

The electroosmotic dehydrator is a device for dewatering sludge by applying a voltage while applying pressure to the sludge. The device includes a positive electrode plate and a negative electrode plate facing each other, a power source for applying a voltage between the positive electrode plate and the negative electrode plate, And a dehydrating zone which is a region between the dehydrating zone and the dehydrating zone.

Such an electro-osmotic dehydrator is further provided with a drum type electro-osmotic dehydrator as disclosed in Japanese Patent No. 10-1381804 (sludge inlet device for an electric sludge dewatering device) and a registered sludge dewatering device for a sludge dewatering device (Japanese Patent No. 10-1425984) , Electrodeposition-type dehydrators with an insulated safety-enhanced electrode plate), and horizontal-type electrodeposition-type deodorizers such as those disclosed in Japanese Patent Registration No. 10-0956614 (sludge equalization device) have. Regardless of the type of sludge, it is necessary to supply sludge of uniform thickness across the entire area of the electrode plate between the anode plate and the cathode plate provided in the electroosmotic dehydrator, so that the dewatering efficiency of the sludge is not deteriorated.

No. 10-0956614 (sludge equal feeding device) discloses a sludge equal feeding device provided in a horizontal transfer type electroosmotic 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.

Registration No. 10-1381804 (sludge inlet device for electric sludge dewatering equipment) Registration No. 10-1425984 (sludge inlet device for electric sludge dewatering equipment) Patent No. 10-0956613 (Electro-osmotic dehydrator with insulated safety enhanced electrode plate) Registration No. 10-0956614 (sludge equal feeding device)

However, according to the technique disclosed in the above-mentioned Patent No. 10-0956614 (Sludge Balance Feeder), it is inconvenient that a cover plate must be separately provided to control the thickness of the uniformly spreaded sludge and that the height of the cover plate Difficult problems arise. 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.

The present invention relates to a sludge hopper, which is fixed to a frame forming a frame of a horizontal transfer electro-osmotic dehydrator and has a sludge charging port for charging sludge at an upper end thereof and a sludge discharge port for discharging sludge at a lower end thereof; 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 elevating 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 bolt 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.

According to the present invention, since no member such as a conventional cover plate is required to uniformly supply and adjust the thickness of the sludge, there are no conventional problems caused by the cover plate.

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

In addition, according to the present invention, 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 without limit, .

Further, according to the present invention, both the flat roller and the pair of crushing rollers can be rotated by only one driving means, and the lumpy sludge is finely crushed while passing between the pair of crushing rollers, It is easy to make.

1 is a cross-sectional view showing an apparatus capable of adjusting the thickness of sludge and supplying the sludge according to 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.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a device capable of controlling the thickness and supplying the sludge 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.

The apparatus 100 capable of adjusting the thickness of the sludge according to the present invention and capable of uniformly supplying the sludge according to the present invention includes a hopper 110, a filter cloth 140, a flat roller 120, a lifting member 150, And an elevating means 160.

The horizontal transfer electro-osmotic dehydrator includes frames 102, 104 and 106 constituting the whole frame. The upper frames 102, 104, and 106 include longitudinal frames 102 extending in the front-rear direction and spaced apart in parallel in the left-right direction, a transverse frame 104 connecting the longitudinal frames, and longitudinal and transverse frames 102 and 104 Vertical frames 106 that support the upper hopper 110, which is fixed to the 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 Patent Document 10-0956614 (Sludge Uniform Feeder), 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 a problem that the cover plate is adhered to the cover plate. However, in the present invention as described above, the thickness of the sludge can be adjusted through the height setting of the elevating member 150. When the height setting of the elevating member 150 is completed, the sludge is uniformly spread while passing through the flat roller 120 There is no need for a member such as a conventional cover plate for the bar, the equal feeding of the sludge and the thickness control. Therefore, according to the present invention, the conventional problems caused by the cover plate do not occur at all.

In the following, additional features 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.

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.

100: Device capable of controlling the thickness of the sludge and supplying it uniformly
102, 104, 106: frame 110: hopper
112: sludge inlet 114: sludge outlet
114a, 114b: passage path 120: flat roller
122: scrapers 130a, 130b: crushing roller
132a, 132b: crushing blade 140: filter cloth
142: rotation roller 150:
152: body 154: filter cloth contact plate
160: lifting means 162a, 162b: bracket
164a, 164b, 166a, 166b: nut 167: scale guide member
168: Rod-type bolt 168a: Ruler

Claims (6)

A sludge hopper fixed to a frame forming the frame of the horizontal transfer electro-osmotic dehydrator, having a sludge inlet port at the upper end for introducing the sludge and having a sludge discharge port at the lower end for discharging the sludge;
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 installed on the frame for raising or lowering the elevating member toward the filter cloth,
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 which are in contact with the filter cloth and which surrounds the sludge outlet, And equip- ment-capable devices. 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 bolt 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. The method of claim 2,
Wherein a scale is provided at a portion between the upper and lower ends of the rod-shaped bolt, and the thickness of the sludge provided with the scale guide member is adjusted and evenly supplied to the lower surface of the upper nut positioned below the upper bracket among the pair of upper nuts. delete The method according to claim 1,
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. 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 so that the thickness of the sludge can be adjusted and evenly supplied.

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