KR20040100721A - Cylindrical filter press-dehydration machine - Google Patents

Abstract

PURPOSE: To provide a cylindrical filter press type dehydration machine which continuously dehydrates the thickened and dehydrated sewage or wastewater at high pressure and discharge dehydration completed cake (water removed sludge) after thickening and dehydrating sludge contained sewage or wastewater generated at sewage disposal plant or wastewater treatment plant. CONSTITUTION: In a cylindrical filter press type dehydration machine equipped with thickening part (20), dehydration part (21), high pressure dehydration part (22) and concentration control part (23) in multistage, the cylindrical filter press type dehydration machine is characterized in that the thickening part and the dehydration part are installed inside a case (100) and comprise a dehydration screw (10) installed in the case such that one side of the dehydration screw is interlocked with the other side of the dehydration screw, fixed plates (12) installed in multistage on a fixed bar (11) with being spaced apart from each other in a certain distance at an outer side of the dehydration screw, and operation plates (13) respectively interposed between the fixed plates by a space (14) and constructed in such a manner that the operation plates are operated along outer diameter of the dehydration screw at the inner side of the space so that dehydrated sludge is moved toward the high pressure dehydration part while separated water is discharged to a separated water discharge pipe (15), the high pressure dehydration part is installed at the side of the dehydration part and comprises a high pressure screw (17) installed on the same axis as the dehydration screw inside a cone type perforated pipe (16), and the concentration control part is installed at an outer side of the high pressure dehydration part and comprises a back pressure plate (18) adjustably installed at an outer side of the concentration control part to discharge finally dehydration completed sludge through a cake discharge part (19).

Description

Cylindrical Filter Press Dewatering Device {CYLINDRICAL FILTER PRESS-DEHYDRATION MACHINE}

The present invention relates to a cylindrical filter press type dewatering apparatus, and more particularly, to concentrate and dewater sewage or wastewater including sludge (precipitated waste or sediment) generated in a sewage treatment plant or wastewater treatment plant, followed by continuous high pressure dehydration, The present invention relates to a device for discharging dehydrated cake (dewatered sludge).

In general, sewage and wastewater containing sludge are generated in sewage treatment plants or wastewater treatment plants, and the method of separating sludge from water (sewage or wastewater) using a filter cloth to separate the sludge from filter press method and It can be divided into a belt press method, and in the case of the above, since the fine holes formed in the filter cloth are clogged when dewatering, the high pressure washing water is injected to open the blocked fine holes of the filter cloth after the sludge is removed. Is polluted and not only makes the river dirty, but also uses pumps by spraying high-pressure washing water, which leads to unpleasant use and excessive economic burden. Problems such as increased work costs have occurred. .

Screw-type filtration apparatus for solving the above problems has already been disclosed in Japanese Patent Application Laid-Open No. 60-19011.

The screw filtration device has a supply port for supplying sludge to one side, an outlet for discharging the cake from which water is removed from the sludge to the other side, a plurality of support plates inside the filtration device, and a fine gap between the filter plates. The support plate is fixed with several bolts on both sides of the inside of the filtering device, and the support plate is formed to have a flow hole at both left and right ends of the filter plate, and is supported by a support rod and a rotating shaft installed through the support plate. In the central hole of the filter body, a cake in which sludge is drained due to the support plate and the filter plate is accumulated, and a filtration device is known to be transferred to the outlet due to the rotation of the screw.

As the filtration device supplies the sewage or wastewater including sludge to the supply port and at the same time as the screw rotates, the filter plate installed in the support plate flows along the screw, so that the water flows out through the minute gap between the support plate and the filter plate. This sludge is discharged to the outlet by the rotation of the screw.

On the other hand, as the filter plate flows, the gap between the support plate and the fluid plate is automatically cleaned, thereby structurally eliminating the unnecessary process of cleaning the conventional filter cloth.

However, the screw type filter device has the effect and performance of dewatering to separate the water of the sludge as friction between the rotating screw and the fine gap between the support plate and the filter plate gradually increases due to the friction. Problems such as falling, dehydrated sludge not properly dehydrated by reprocessing.

In addition, such a screw-type filtration device is installed as a single, even if it passes through the filtration device, such as the problem that the concentration and dehydration is not completed, resulting in the caked sludge in the state that the concentration and dehydration is not completed When discharged, the water contained in the sludge needs to be treated after undergoing a separate drying process or dehydration process. Therefore, there is an urgent need for the development of a device that can be completely compressed and dehydrated in a single process. to be.

Therefore, the present invention has been made in order to improve the above problems, and at the same time having a condensation unit 20 and a dehydration unit 21 which can be cleaned at a fine interval to automatically separate the sludge with water, high pressure dehydration By using the part 22 in double, it dehydrates at high pressure together with the primary concentration to more effectively remove the water from the sludge, and also prevents the loss of excess water content of the sludge caused by the minute gap due to wear. In order to prevent unnecessary loss of the reprocessing process, the sludge is discharged into a cake having a predetermined size by the back pressure plate to provide an easy process after the work.

In order to achieve the above object, a fixed plate 12 fixed inside the case 100 as a fixed bar 11 and a movable plate 13 interposed by a space 14 are installed therebetween to drive the motor (not shown). A dewatering screw 10 driven by a) is installed to concentrate the sewage or wastewater containing sludge, a concentrating part 20, a dewatering part 21 for separating water, and finally a cone-shaped porous tube 16 inside. The high pressure screw 17 is installed in the high pressure dewatering part 22 for optimally dehydrating the water contained in the sludge, and the cake discharge which can control the concentration with the back pressure plate 18 when discharging the sludge separated from the water. Characterized in that consisting of a concentration adjusting unit 23 consisting of a portion (19).

1 is a cross-sectional view of a cylindrical filter press type dewatering device showing a preferred embodiment of the present invention

2 is an enlarged cross-sectional view of the main part of the present invention;

* Description of symbols on the main parts of the drawings *

100: case

10: dewatering screw 11: fixed bar

12: fixed plate 13: movable plate

14: space 15: desorption liquid discharge pipe

16: porous tube 17: high pressure screw

18: back pressure pipe 19: cake discharge unit

20: enrichment part 21: dehydration part

22: high pressure dehydration unit 23: concentration control unit

1 is a cross-sectional view showing a preferred embodiment of the present invention, characterized in that the condensation portion 20, the dehydration portion 21, the high-pressure dehydration portion 22, the concentration control unit 23 is composed of multiple stages.

The concentrating part 20 and the dehydration part 21 are installed inside the case 100, and can supply sewage or wastewater including sludge to be interlocked with the other part crossing the center from one side of the case 100. Install the dewatering screw 10 so that the outer end of the dewatering screw 10 in a multi-stage fixed plate 12 is installed by a fixed bar 11 at regular intervals, the space 14 between the fixed plate 12 The fixing plate 12 is fixed by the fixing bar 11 within the range in which the dewatering screw 10 rotates through the movable plate 13 respectively by the rotating plate 13, and the movable plate 13 is inside the space 14. The sludge is moved to the high pressure dewatering part 22 side by configuring to be movable according to the outer diameter of the dehydrating screw 10 and the remaining desorbing liquid is discharged to the desorption liquid discharge pipe 15 and the dewatering part 20 and the dewatering part 21 are It is provided, on the side of the dewatering unit 21 is provided with a high pressure dewatering unit 22, the high pressure dehydration The part 22 is the high-pressure dewatering part by having the high-pressure screw 17, which is also a cone type, coaxially with the dewatering screw 10, inside the porous tube 16 of the cone-shaped tube. The sludge injected into the 22 is moved while being dehydrated at a high pressure while receiving a pressure, and the back pressure plate 18 is adjustablely installed on the outside so that the final dewatered sludge is discharged through the cake discharge unit 19 ( 23).

The present invention, which can be configured as described above, is used as a device for pressing and dewatering sewage or wastewater including sludge generated in a sewage treatment plant or wastewater treatment plant at high pressure, and discharging the concentrated and dehydrated cake. The unit 20 and the dewatering unit 21 are installed in the single case 100 to automatically separate the sludge from the water, and at the same time, by using the high pressure dewatering unit 22 as a double, compressing and dewatering at high pressure with primary concentration. By removing the water of the sludge more effectively.

In addition, it prevents the loss of excess water content of sludge caused by minute intervals due to abrasion, preventing unnecessary loss such as reprocessing and discharging the sludge into a cake having a constant size by the back pressure plate 18. It is characterized by what can be done.

In order to achieve the above object of the present invention, a fixed plate 12 fixed as a fixed bar 11 inside the case 100 and a movable plate 13 interposed by a space 14 are installed and driven therebetween. A dewatering screw 10 driven by a motor (not shown) is installed to concentrate the sewage or wastewater containing sludge, a condenser 20 for separating the water of the sludge, and finally a cone type. The high-pressure screw 17 is installed inside the porous tube 16 of the high-pressure dehydration part 22 for optimally dehydrating the water contained in the sludge, and when the discharged sludge is discharged to the back pressure plate 18. Consisting of a concentration control unit 23 consisting of a cake discharge unit 19 that can adjust the concentration is a key to use as a cylindrical filter press type dehydrator.

According to the present invention, the condensation part 20 and the dehydration part 21 are provided with a dehydration screw 10 that rotates by receiving power from a power source at a supply part, and is provided on an outer circumference of the dewatering screw 10. The fixed plate 12, which is installed in a fixed type and has an inner diameter of a standard which does not interfere with the rotation of the dewatering screw 10, and the movable plate 13, which flows along the outer circumference of the spiral of the dewatering screw 10, has a space ( 14) are installed at appropriate intervals.

The fixing plate 12 is installed in a fixed bar (11) in a fixed state, the fixing plate 12 is fixed by the fixing bar 11 in accordance with the rotation of the dewatering screw 10, the movable plate 13 is a space ( The desorption solution is concentrated and dehydrated while maintaining the fine spacing between the fixed plate 12 and the movable plate 13 while being driven along the spiral of the dewatering screw 10 by the desorption liquid along the inclined surface of the case 100. Is discharged through the discharge pipe 15, the cake of the sludge can be supplied into the porous pipe 16 of the high-pressure dehydration unit 22.

The high-pressure dewatering portion 22 is installed in the conical high-pressure screw 17 is also installed in the concentric conduit tube 16 coaxially installed with the dewatering screw 10, the porous tube 16 is A large number of inner narrow external light holes are laid, and the concentration adjusting unit 23 is provided with a back pressure plate 18 for adjusting the cake to a predetermined size, and a cake discharge part 19 for discharging the cake is formed at the lower portion of the sludge. It is characterized by being able to concentrate and compress dehydration.

When the sewage or wastewater including sludge is supplied to the supply side, the dewatering screw 10 is rotated, and at this time, a movable plate (between the fixing plates 12 fixed as the fixing bars 11 supported by the case 100) is provided. 13) the movable plate 13 supported by the spiral of the dewatering screw 10 by the space 14 is moved through the trajectory of the spiral of the dewatering screw 10, wherein the dewatering screw 10 The movable plate 13, which is grounded in the spiral of, is not a simple rotational movement, but moves entirely along the spiral trajectory of the dewatering screw 10.

As the dewatering screw 10 rotates as described above, the movable plate 13 supported by the spiral moves within the range of the space 14 coupled between the fixed plate 12 and the movable plate 13 is movable with the fixed plate 12. The desorption liquid exits between the minute gaps of the plate 13 and is discharged to the desorption liquid discharge pipe 15 along the inclined surface of the lower side of the case 100, and the remaining sludge is subjected to the process of moving along the spiral of the dewatering screw 10. While moving to the high-pressure dehydration unit 22 through the concentration unit 20 and the dehydration unit 21 installed inside the case 100.

The present invention is interposed between the movable plate 13 and the fixed plate 12 fixed by the fixed bar 11 in the process of pressing and dewatering the sludge while operating as described above to rotate the dewatering screw 10 When only the movable plate 13 grounded on the spiral flows, the desorption liquid depressurized by a minute gap between the movable plate 13 and the fixed plate 12 is discharged to the desorption liquid discharge pipe 15.

The remaining sludge is moved to the high pressure dewatering part 22. Thus, the compressed and dewatered sludge is compressed and dehydrated without blocking the fine gap, and the sludge that is moved by continuous rotation of the dewatering screw 10 is a cone. (cone) enters the high-pressure dehydration section 22 with the porous tube 16 of the type.

As described above, the sludge moved to the porous tube 16 of the high pressure dewatering part 22 is more effectively removed from the water of the sludge by the high pressure dehydration action of the high pressure screw 17 of the cone type. Since a plurality of minute holes are formed in the porous tube 16, the sludge compressed and dehydrated by the high pressure screw 17 as the high pressure screw 17 is rotated is subjected to the compression dehydration while being subjected to a high pressure. Efficiency is greatly improved.

The desorption liquid passed through the final high pressure dewatering part 22 is discharged through the desorption liquid discharge pipe 15 in a separate line, and the remaining sludge is dehydrated by pressing and dehydrating the cake (condensation of the water in the sludge to dehydrate the solid). And the cake is discharged through the cake discharge unit 19 by the back pressure plate 18 of the concentration control unit 23 is completed the sludge treatment.

The back pressure plate 18 of the concentration control unit 23 adjusts the back pressure plate 18 according to the type of sludge to be treated or the degree of concentrated dehydration, and the viscosity of the cake discharged to the cake discharge unit 19 and the water content. Can be adjusted to change the efficiency of further processing.

As described above, the present invention is composed of a condensation unit 20, a dewatering unit 21, a high pressure dewatering unit 22, and a concentration control unit 23 to make the pressurized dewatering of the sludge very efficient. According to the present invention, the present invention includes a plurality of fixing plates 12 installed in a fixed type by a fixing bar 11 inside the case 100, and a movable plate 13 interposed between the fixing plates 12, respectively. And a space 14 interposed in the fixing bar 11 supporting the fixing plate 12 at a minute interval therebetween, followed by the first condensing unit 20 and the dehydrating unit 21 and a second high pressure. By using the high pressure screw 17 built into the cone-type porous tube 16 of the dewatering part 22 to remove the water of the sludge at high pressure, the efficiency of press dewatering can be further increased, and the gap due to the wear of the equipment can be increased. The loss of manpower and the life of equipment due to the excess water content of the cake. It can be expected to extend the effect, and to discharge the cake of a certain size by the back pressure plate 18 of the concentration control unit 23 to reduce the maintenance cost by providing a quick and convenient treatment process after work It is an invention of which the expected value is very excellent with the added effect.

Claims (1)

In constructing a cylindrical filter press type dehydrator having a concentrating portion 20, a dehydration portion 21, a high pressure dehydration portion 22, a concentration control portion 23 in multiple stages, The concentrating part 20 and the dehydrating part 21 are installed inside the case 100, and the dehydrating screw 10 is installed in one side of the case 100 so as to interlock with the other side, and the dewatering screw 10 In the outer end of the fixed plate 12 in a plurality of stages fixed bar 11 by a fixed interval, but between the fixed plate 12 between the movable plate 13 by a space 14, the movable plate ( 13) is configured to be movable in accordance with the outer diameter of the dewatering screw 10 in the interior of the space 14 so that the dewatered sludge is moved to the high-pressure dehydration unit 22 side and the desorbing liquid is discharged to the desorption liquid discharge pipe 15 20 and the dehydration portion 21 is provided, the high pressure dehydration portion 22 is provided on the side of the dewatering portion 21, the high-pressure dehydration portion 22 is a cone (cone) -type porous tube (16) ) High pressure screw (17) inside the coaxial with the dewatering screw 10, the back pressure plate (18) is installed on the outside adjustable adjustable It can complete sludge cylindrical filter press type dewatering apparatus according to claim consisting of the concentration adjusting unit 23 is discharged through the cake discharge section (19).