KR100268219B1 - A sludge dehydration apparatus - Google Patents

Abstract

PURPOSE: Provided is a sludge dewatering equipment which can separate industrial wastewater into sludge of lowest water content and water by purifying industrial wastewater and then passing sludge of high water content through a preliminary dewatering roller, compressing, pressurizing, and high pressure dewatering rollers, and top/bottom filter clothes. CONSTITUTION: A plurality of section steels(11, 12, 13, 14) are assembled for forming a frame(1). In the middle of the frame(1), compressing-dewatering gear rollers(2), a plurality of pressurizing-dewatering gear rollers(3), and a preliminary dewatering gear roller(4) are installed. In a side of the middle of the frame(1), upper/lower driving roller, upper/lower filter clothes(7, 7'), and a tension adjusting part(8) are equipped.

Description

Sludge dewatering device

The present invention relates to a sludge dewatering device, and more specifically, water (in sludge) having high moisture content generated after purification of industrial wastewater discharged from a large-scale business site, a dyeing plant, a leather, a cardboard production plant, or a sewage treatment plant. The present invention relates to a sludge dewatering device that effectively removes moisture and separates water and cake.

In general, the sludge dewatering device is installed at the end of a wastewater treatment system for treating sewage or wastewater generated in a large business place or a factory, and the filter cloth circulating along the sludge transport path in the support frame moves along a plurality of guide rollers. It is the final wastewater treatment device that separates water and cake by pressurized dewatering the sludge with high moisture content supplied to the filter cloth.

Such sludge dewatering device for industrial waste treatment is usually injected into the sludge storage tank and mixed with coagulant so that the sludge wastewater circulates through a number of rollers and is introduced into the drive motor. By circulating between the driving roller and each guide roller, the water is dehydrated and dropped to the lower part of the filter cloth by the pressure pushed on the roller, and the cake is collected and transferred to a separate collection unit so that it can be separated and processed.

However, in the conventional sludge dewatering device, since the configuration of the rollers is vertically overlapped, the water dewatered to the lower part of the filter cloth when the sludge passes through the filter cloth falls to the roller at the bottom thereof and falls back on the filter cloth and the sludge. As a result, the water content is increased, so that the effective dehydration is not obtained.

In order to prevent the dehydration effect from being deteriorated, the collection tank is installed at the lower roller and filter cloth at each stage, but it is impossible to install the collection tank by the entire length between the rollers due to the structure of the device. In addition, if debris is trapped in the upper and lower filter cloth tissues, the dehydration efficiency is not only lowered, but there is no separate device for cleaning the filter cloth even though the service life of the filter cloth is shortened. The replacement of filter cloth is frequent, but the device is complicated and overwhelming, and the difficulty of replacing and replacing the filter cloth is always inherent.

In addition, since the conventional method adopts a driving method of chain-coupling or belt-connecting a drive roller with a motor, the appearance is not beautiful, and the malfunction of the drive system due to irregular relaxation of the chain and for recovering the same. Frequent stop times of the whole device and a lot of time for the recovery work, and due to the irregular running of the filter cloth, there is a concern that the above-mentioned filter cloth running away from the roller is biased left or right. In this case, frequent replacement of the belt is inevitable when used for a long time, and there is a problem that the belt and the filter cloth are not easily exchanged due to a complicated structure.

In addition, the conventional sludge dewatering device has a long compression between the roller and the roller to squeeze the filter cloth has a low compression effect, and there are several problems that need to be improved, such as dehydration effect due to the sponge phenomenon of the upper and lower bubbles.

Therefore, the present applicant has already developed a sludge dewatering device to solve the problems of the conventional sludge dewatering device and to facilitate the recycling and reuse of sludge as well as to reduce the treatment cost. It is disclosed in the application as 47227.

Looking at the sludge dewatering device of the line application invention developed by the applicant of the present invention briefly, it forms a support frame that supports the whole by being formed in a rectangular shape in which a plurality of section steels are vertically and horizontally opposite to each other in the longitudinal direction. ,

A compression dehydration interlocking roller is installed at the middle of the support frame, and one side of the compression dewatering interlocking roller is provided with a plurality of rows of pressurized dehydration interlocking rollers arranged in up and down zigzag, and the other side of the compression dewatering interlocking roller. A preliminary dehydration interlocking roller is installed at the lower part, and one side of the support frame is provided with upper and lower drive rollers connected in series with the drive motor, and the other side is configured with an upper and lower tension tension adjusting part. The meander adjustment part is configured in the upper and lower middle parts so as to pressurize and dehydrate the sludge supplied through the supply part while circulating and overlapping each other in a predetermined cycle.

At this time, the tension adjusting unit is installed on the other side of the support frame in which the driving roller is installed, and is installed at the upper and middle ends of the upper filter cloth and the lower filter cloth, respectively, wherein the upper part of the vertical steel forming the tension adjusting part supports the support frame. It is hinged to each end of the transverse steel to form, and the other end of the air bellows, one end of which is fixed to the vertical steel of the support frame, is respectively supported.

The applicant's prior application of the present invention is a structural defect of the conventional sludge dewatering apparatus, that is, since the configuration arrangement of the rollers is vertically and vertically overlapped, the water dewatered to the lower part of the filter cloth when the sludge passes through the filter cloth. By dropping to the roller located in the lower part and falling back to the filter cloth and sludge it is repeated, thereby increasing the water content in order to solve the problem of not being able to obtain an effective dehydration action,

By adopting and combining the cleaning device to remove foreign substances trapped in the upper and lower filter cloth tissues, various advantages such as improved dewatering efficiency, improved life span of the filter cloth, and easy replacement and replacement of the filter cloth were provided.

However, the applicant's prior invention has the advantage of solving the problems of the prior art as described above, while the window area is large and the occupancy area is large due to the installation, whereas the gravity dehydration part is located under the gravity dewatering part. Due to the short distance between the water and the preliminary dehydration part, when the sludge is dehydrated with a large amount of organic matter, that is, the coagulation rate is low, the water contained in the sludge is not sufficiently dehydrated by gravity and moves to the upper part of the filter cloth together with the sludge. There is a concern that the lower filter cloth may overlap and fly out of the device during movement.

In addition, since the structure of the filter packing force control part has a shape that depends on the air pressure supplied to the air bellows, the lower portion of the hinge-bonded steel is difficult to control by supplying the same air pressure, and thus, the air bellows is provided to the front and rear air bellows. The amount of air, that is, the balance, can not be balanced, resulting in a failure to maintain a constant tension of the circulating filter cloth, causing the filter cloth to slip off the track or irregularly, making it impossible to use. There is a problem that needs to be improved.

In addition, the applicant's prior application of the present invention has a considerable difficulty in obtaining an effective dehydration action by causing the sponge phenomenon to increase the water content since the compression dehydration unit is only dependent on the pressing force by the rotation of a simple roller. Is exposed.

The present invention has been researched and created to solve the problems caused by the structural defects of the applicant's prior invention, the object of providing the same by fixing the supply device and the gravity dewatering portion on the upper side of the support frame, according to the installation The goal is to minimize the footprint.

Another object of the present invention is to extend the circulation path of the lower filter cloth forming the gravity dewatering portion to the upper portion of the support frame to enable circulation between the organic dehydration portion between the gravity dehydration portion and the preliminary dehydration portion, that is, gravity to reduce the cohesion rate of organic sludge This is to ensure that the sludge does not escape in the filter cloth and is not scattered or spilled out of the apparatus even when dewatering.

Another object of the present invention is to improve the structure of the tension adjusting unit for adjusting the tension of the filter cloth to adjust the separation distance of the guide roller installed between the front and rear of the support frame, so that the filter cloth is irregularly relaxed or track It's trying to prevent you from leaving.

Another object of the present invention is the sponge development by effectively dewatering and discharging the sludge circulated by the upper and upper super-foams by the perforated rollers of the primary dehydration unit and the horizontally arranged compressed dehydration unit. This is to minimize the moisture content by suppressing the occurrence of.

1 is a front view of the present invention,

2 is a front view showing the filter cloth circulation process of the present invention,

3 is a plan view of the present invention,

4 is a side view showing a part of the present invention deleted;

5 is a partial cross-sectional view showing a part of the present invention,

6 is a partial cross-sectional view showing a supply unit of the present invention;

7 is a plan view showing an extract of the tension adjusting unit of the present invention;

8 is a front view of FIG. 7;

9 is a plan view showing an extract of the washing unit of the present invention,

10 is a side view of FIG. 9;

<Explanation of symbols for main parts of drawing>

1. Support frame 2. Compression roller

3. Pressurized dewatering interlocking roller 4. Preliminary dewatering interlocking roller

5,5 '. Upper and lower drive roller 6. High pressure dehydration interlocking roller

7,7 '. Upper, lower half 8.Tension adjusting part

9. Meandering department 10. Supply department

10a.Gravity Dewatering 11,12,13,14,15. Section steel

14a, 15a. 20. Cleaning section

20a. Enclosure 20b. Water pipe

20c. Nozzle 21. Through Hole

81. Guide rollers 82. Rack

83. Keyway 84. Moving Bar

85. Air Bellows 86. Brackets

87. Shaft 88. Pinion Gear

In order to achieve the above object, the present invention will be more clearly described with reference to the accompanying drawings.

That is, the present invention, as shown in the accompanying drawings, Figures 1 to 10, a plurality of section steel (11), (12), (13), (14), is assembled in the vertical and horizontal to form a three-dimensional support frame (1) Made up,

Compression dehydration interlocking roller (2), a plurality of rows of pressure dehydration interlocking rollers (3) arranged in the upper and lower zigzag, and a preliminary dewatering interlocking roller (4) is provided in the middle of the support frame (1),

On one side of the middle of the support frame 1, upper and lower driving rollers 5 and 5` connected in series with the driving motor M are installed, and the upper and lower superfoams 7 and 7`tension adjusting unit 8 are provided. ), The upper and lower portions of the support frame (1) has a meander adjustment unit (9) is configured to pressurize dewatering the sludge supplied through the supply unit 10 while circulating to overlap each other in a predetermined cycle. In that way,

One side of the upper side of the upper section steel (14) constituting the support frame (1) is provided with an upper side filter cloth (7) tension adjusting portion 8, the other side upper portion of the lower side filter cloth (7 ') tension adjusting portion (8) And a section steel 15 having a guide roller 15a installed on the other side thereof with a gravity dewatering portion 10a having a supply portion 10 thereon,

A guide roller 14a is installed at the middle upper side of the upper section steel 14 of the support frame 1, which is the other side of the section steel 15, and the lower filter cloth 7 ′ circulating is extended to the upper portion of the support frame 1. It is possible to extend and secure the dehydration distance by gravity between the gravity dewatering unit (10a) and the preliminary dehydration roller (4),

The compression dehydration interlocking roller (2) is installed in a side by side arrangement so that the filter cloth (7), (7 ') is alternately up and down on one side of the preliminary dehydration interlocking roller (4), the compression dehydration interlocking roller (2) is inside , The outer portion is formed by adopting a perforated roller having a plurality of through-holes 21.

At this time, the tension adjusting part 8 of the upper and lower side filter cloths 7 and 7 'has a guide roller 81 which is installed between one side and the rear side of the sections 14 and 15, and has a rack (1) at the lower side. 82 is rotatably installed at one end of the moving bar 84 in which the key groove 83 is formed in the middle of the outer surface,

The other side of the moving bar 84 is one side of the air bellows (85) fixed to the section steel 14, 15 is abutted, it is configured to be stretchable, contraction,

The middle portion of the moving bar 84 is installed to be horizontally movable without being rotated to the bracket 86 fixed to the section steel 14, 15,

The rack 82 formed on the movable bar 84 is engaged with the pinion gear 88 coupled to the shaft 87 at the ends of the shaped steels 14 and 15 in accordance with the air pressure supplied to the air bellows 85. A moving bar 84 installed at the front and rear of the support frame 1 is configured to extend and contract the same distance while rotating the pinion gear 88 coupled to the same shaft 87.

At this time, the lower portion of the pressure dehydration interlocking roller 3, as in the applicant's prior application of the present invention, a plurality of high-pressure dehydration rollers 6 are positioned between them and squeezed by the air bellows 61 can be raised and lowered Is made up of

The meandering adjustment unit 9 is provided with a guide roller 91 having a front or rear one side fixed to one side of the upper and lower middle sides of the support frame 1 in front and rear, so as to change the horizontal angle of the transverse. Made up,

The preliminary dehydration roller (4) is installed on the outer surface with a plurality of angles (41) at equal intervals in the upper and upper interlocks (7) (7`) by interlocking the upper sludge inside the pressurized dewatering, but both sides Shatterproof jaw 42 is made to be installed,

In addition, the upper and lower portions of the support frame (1) is provided with a washing unit 20 for sprinkling and washing the upper and lower filter cloth (7) (7`), the washing unit 20 is the middle of the rectangular housing (20a) The upper or lower filter cloth (7) (7`) is configured to proceed through the portion, and the watering pipe (20c) having a plurality of nozzles (20b) in the lower portion is installed to be reciprocating before and after.

As the reference numeral, T is a transmission constituting the drive unit, M-1 is the drive gear, 51 is the upper drive gear, 51` is the lower drive gear, 62 is a guide pipe for guiding the high pressure dehydration roller (6), 63 is a high pressure The supporting steel of the dehydration roller 6, 92 denotes the air bellows of the meandering adjustment section 9, 10b denotes a connection hole of the supply portion, and 10c denotes a rotary wing of the supply portion.

Referring to the operation of the present invention made of such a structure in detail according to the operation sequence as follows.

First, by operating the control system (not shown) to match the tension of the upper and lower fruit fabrics 7 and 7`, i.e., the tension adjusting part 8 installed on the upper sides of the support frame 1, As air is filled and expanded in the air bellows 85, the moving bar 84 supported by the bracket 86 moves horizontally to the outside thereof.

At this time, since the moving bar 84 maintains a state in which the key groove 83 formed on the outer surface is fitted to the bolt fastened to the bracket 86, the moving bar 84 does not rotate and maintains the state. Will move,

The movement operation of the moving bar 84 is a state in which the rack 82 formed on one side thereof is engaged with the pinion gear 88 which is coupled to the shaft 87 on the outside of the steel 14 and 15. Since the moving bar 84 moves, the pinion gear 88 is rotated to keep the moving distance of the other moving bar 84 located on the other side of the moving bar 84 so that the filter cloths 7 and 7 ' The wound guide roller 81 is moved outward.

Of course, the air bellows 85 is also coupled to the rear end of the moving bar 84 located at the other side at this time, so it is very easy to keep the moving distance of the moving bar 84 the same, and this moving bar 84 Guide rollers 81 rotatably coupled to each outer end of the moving bar 84 according to the movement of the upper and lower filter cloths 7 and 7 'which are wound around the outer surface. Will be able to maintain a constant tension.

After the tension of the upper, upper and upper fabrics 7 and 7 'is adjusted through this operation, the air charged in the air bellows 92 on both sides of the meandering control unit 9 is equally adjusted.

This means that, as in the applicant's prior invention, which has been filed previously, the upper and lower loincloths 7 and 7 'are positioned in the middle of the guide roller 91 of the meander adjusting unit 9,

Of course, if the balance of the lower surface of the support frame (1) according to the installation location of the device can be adjusted by mutually controlling the injection air of the air bellows (92).

In this state, when power is supplied to the driving motor M, the upper and lower driving rollers 5 and 5 'are simultaneously rotated by the gear 51 and 51' meshing, so that the filter cloth 7 and 7 'are rotated. ) Starts a circular rotation, and the interlocking operation of each of the pressure guide rollers is also performed at the same time.

In this state, a liquid coagulant supplied by a separate supply unit is continuously added to the water-containing sludge supplied from the sewage or wastewater treatment system to the supply unit 10, and the mixture is stirred and mixed, and the sludge mixed with the coagulant is circulated in this process. To be supplied in the form applied to the upper portion of the lower filter cloth 7`.

In the supply of such sludge, since the lower filter cloth 7 'extends to the upper side of the support frame 1, the distance from the preliminary dehydration roller 4 is structurally long, and the dehydration distance by gravity is sufficiently secured. In addition, the water of the sludge supplied from the supply unit 10 causes a natural dehydration action by the gravity to pass through the gravity dewatering unit (10a) is a large amount of water is dehydrated.

The lower filter cloth 7 ', which has passed through the gravity dehydration part 10a, moves with the sludge containing moisture therein at a constant thickness to move the guide roller located in the middle of the upper section 14 of the support frame 1 ( 14a) to pass through, while maintaining the form that proceeds to one side while overlapped with the upper filter cloth (7) circulating from the other side.

At this time, when the upper and lower filtration cloth (7) (7`) reaches the preliminary dehydration roller (4) to continue the operation proceeds, a plurality of angles (41) installed at equal intervals on the outer surface of the preliminary dewatering roller (4). ) Is pressed against each of the lower surfaces of the upper filter cloth (7), so that the water contained in the sludge falls to the lower portion is collected in the collection tank (13a) installed in the lower section of the steel frame 13 of the support frame (1), in the process Part of the water that has soaked into the upper filter cloth 7 is transported in the form of being collected at the bent surface of the angle 41 and is rotated by the preliminary dehydration roller 4 which is rotated by each of the angles 41. Moisture collected by the angular conversion is located on the inner surface of the bent portion of the angle 41 and moved to the left and right.

At this time, the water moving to the left and right of the angle 41 is guided to the scattering prevention jaw 42 formed on both sides of the preliminary dehydration roller 4 is dropped and collected in the lower collection tank (13a).

The sludge that has undergone such a preliminary dehydration process is continuously circulated in accordance with the progress of the superfoam (7) (7`) and the compression dehydration located inside the preliminary dehydration roller (4), that is, in the middle of the support frame (1). When moved to the roller 2, the water contained in the sludge is compressed by dehydration through the lower filter cloth 7` while being compressed by the rotational force of the compression dehydration roller (2) located in the upper and lower parts.

In this process, the water dewatered from the filter cloth (7), (7 ') is flowed into the interior of the roller (2) through the through hole (21) formed in the compression dehydration roller (2), Moisture introduced into the inside is discharged and moved to the outside of the lower side through the through-hole 21 formed in the lower side to be collected in the water collecting tank so that the water intake of the filter cloths 7 and 7 'due to the sponge phenomenon is not made. do.

Through this process, the sludge and filter cloth that have passed through the compression dewatering roller (2) are alternately zigzag-like, leading to the vertically arranged pressure dewatering roller (3), which is compressed by the compression dewatering roller (2) in this process. The sludge is pressurized while continuing the continuous up and down zigzag circulation without giving time to re-inhale moisture due to the sponge phenomenon, so that the water inside the sludge is completely removed, wherein the lower side of the pressurized dehydration roller 3 is The high pressure dehydration roller (6) located in the vertically rises by passing air into the lower air bellows (61) in each guide tube (62) fixed to the support frame (1) and passes through the pressure dewatering roller (3). As the upper and lower ladles (7) (7`) is rotated while pressing the lower pressure dehydration roller (3), the water removal effect of the sludge positioned between and moving together is doubled.

In particular, the pressurized dehydration rollers (3) are arranged side by side in a zigzag pattern up and down, so that the space is minimized and the state that maintains the state is rotated at a certain number of revolutions of the sponge sludge re-suction moisture 2 Excluded over the difference, the water content of the sludge is minimized.

The sludge from which the water is removed is discharged to the outside through the upper and lower driving rollers (5) and (5 '), and is transported through a separate collection and transfer device (not shown) to be recycled or discarded. Is discharged after the post-treatment by a separate filtration system.

In addition, the upper and lower filter cloth (7) (7`) discharged the sludge is divided and circulated continuously up and down according to the rotation of the driving roller (5) (5`), the filter cloth (7) (7) circulated `) Is passed through the washing unit 20 and the meandering adjusting unit 9, wherein the filter cloth (7) (7`) comes from one side of the housing 20a of the washing unit 20 while reciprocating before and after high pressure Since the washing water is sprayed, the washing area is widened by the reciprocating operation to obtain an effective washing action with the minimum washing water.

In this process, the washing water is drained through the drain holes 20e on both sides of the collecting tank 20d.

This overall dehydration is a continuous and repetitive dehydration operation by the rotation of the drive roller (5) (5`) by the drive motor (M) to allow a large amount of sludge to be dewatered quickly to the river It prevents contamination and enables the recycling of sludge that is disposed of.

According to the present invention, by placing the supply device and the gravity dehydration unit on the upper side of the support frame, extending the circulation passage of the lower filter cloth forming the gravity dehydration portion to the upper portion of the support frame while minimizing the occupied area according to the installation, which has been a problem in the previous application By circulating the sludge, the sludge is dehydrated through the filter cloth, even when the organic sludge having a low cohesion rate is dehydrated by the gravity dehydration unit and the preliminary dehydration unit, that is, the dehydration distance by gravity is extended. There is no risk of scattering or overflowing outside of the filter, and the structure of the tension adjusting part that adjusts the tension of the filter cloth is improved, so that the distance between the ends of the guide rollers installed between the front and the rear of the support frame is equally adjusted. There is no fear of relaxing or leaving the track, Water from sludge circulated by the dewatering part is effectively dehydrated and discharged by the perforated roller of the pressurized dehydration part, thereby minimizing the water content by minimizing the occurrence of sponge phenomenon and reducing the cost and labor cost. It is evident that this is a very beneficial invention that can achieve useful effects at the same time.

Claims (3)

A plurality of beams (11), (12), (13), (14), are assembled longitudinally and horizontally to form a three-dimensional support frame (1), Compression dehydration interlocking roller (2), a plurality of rows of pressure dehydration interlocking rollers (3) arranged in the upper and lower zigzag, and a preliminary dewatering interlocking roller (4) is provided in the middle of the support frame (1), On one side of the middle of the support frame 1, upper and lower driving rollers 5 and 5` connected in series with the driving motor M are installed, and the upper and lower superfoams 7 and 7`tension adjusting unit 8 are provided. ), The upper and lower portions of the support frame (1) has a meander adjustment unit (9) is configured to pressurize dewatering the sludge supplied through the supply unit 10 while circulating to overlap each other in a predetermined cycle. In what has been done, One side of the upper side of the upper section steel (14) constituting the support frame (1) is provided with an upper side filter cloth (7) tension adjusting portion 8, the other side upper portion of the lower side filter cloth (7 ') tension adjusting portion (8) And a section steel 15 having a guide roller 15a installed on the other side thereof with a gravity dewatering portion 10a having a supply portion 10 thereon, A guide roller 14a is installed at the middle upper side of the upper section steel 14 of the support frame 1, which is the other side of the section steel 15, and the lower filter cloth 7 ′ circulating is extended to the upper portion of the support frame 1. It is possible to extend and secure the dehydration distance by gravity between the gravity dewatering unit (10a) and the preliminary dehydration roller (4), The pressurized dewatering interlocking roller (2) is sludge dewatering device characterized in that the filter cloth (7), (7 ') is installed side by side so as to alternate up and down on one side of the preliminary dehydration interlocking roller (4). The method of claim 1, The pressurized dewatering interlocking roller (2) is a sludge dewatering device, characterized in that the perforated roller having a plurality of through-holes 21, the inside and the outside. The method of claim 1, The tension adjusting unit 8 is a guide bar 81 installed between one side of the front and rear sides of the shaped steels 14 and 15, and a moving bar having a rack 82 and a key groove 83 formed in the middle of the outer surface at a lower side thereof. Is rotatably installed at one end of (84), The other side of the moving bar 84 is one side of the air bellows (85) fixed to the section steel 14, 15 is abutted, it is configured to be stretchable, contraction, The middle portion of the moving bar 84 is installed to be horizontally movable without being rotated to the bracket 86 fixed to the section steel 14, 15, Slag dewatering device, characterized in that the rack (82) formed in the moving bar 84 is engaged with the pinion gear 88 coupled to the shaft (87) at the ends of the section steel (14), (15).