KR20160065508A - Sludge dewatering device - Google Patents

Abstract

A sludge dewatering apparatus according to the present invention comprises: a screen-type cylinder which has a mesh shape; a screw which is installed along a central axis of the screen-type cylinder, and dewaters sludge by pressing the sludge while moving the sludge; a scraper which is installed on a vane of the screw where the screen-type cylinder is located and scrapes an inside surface of the screen-type cylinder; a spray means which is installed on the vane of the screw where the screen-type cylinder is located, and eliminates impurities by blowing off the impurities caught in screen holes of the screen-type cylinder; and a motor which is installed on one side of the screw, and provides power adapted to drive the screw. The screen-type cylinder includes a vertical frame formed in a longitudinal direction of the screen-type cylinder, a circumferential frame formed in a circumferential direction of the screen-type cylinder, and screen grid cells disposed in sections divided in a grid structure by the vertical frame and the circumferential frame and fitted into the vertical frame and the circumferential frame. According to the present invention, the screen grid cells are installed in portions divided in a grid structure by the vertical frame and the circumferential frame, and thus only a screen grid cell of a corresponding portion is removed and replaced with a new screen grid cell when a mesh is damaged, with the result that a mesh can be easily replaced and replacement costs can be reduced.

Description

[0001] Sludge dewatering device [0002]

The present invention relates to a sludge dewatering apparatus, and more particularly, to a sludge dewatering apparatus which is formed to have a cylindrical shape as a whole but is formed so that perforated nuts can be separated from each other, thereby facilitating a cleaning operation and reducing a replacement cost.

Since the amount of wastewater is increasing rapidly every year, the environmental pollution problem is seriously arising. Accordingly, various efforts have been made to effectively treat wastewater. That is, various techniques have been developed for a sludge dewatering device for dewatering moisture contained in sludge into a cake.

In recent years, a sludge dewatering device for dewatering water contained in sludge into a cake by screw press method has been mainstream. Such a screw press dewatering device has also been improved to have improved dewatering efficiency. That is, in the past, the cylinder was composed of a screen in the form of a perforated net so that the moisture contained in the sludge was discharged to the outside through the hole of the screen. More specifically, the water contained in the sludge is discharged to the outside through the hole of the screen by a screw installed along the central axis of the cylinder and pressing the sludge while moving the sludge.

However, such a screen-type sludge dewatering device has a structure in which the screw moves and moves the sludge while discharging the moisture contained in the sludge to the outside through the hole of the fixed screen. That is, since the screen-type sludge dewatering device has a fixed form of the screen, the sludge attached to the screen is not smoothly cleaned in the process of separating the water, causing a drop in the drainage effect, there was. In addition, there is a problem that the hole of the screen is clogged by the sludge and the function of the screen is not smoothly performed.

In order to solve the above problems, a sludge dewatering device of a lamination type in which a plurality of ring-shaped fixed disks and a movable disk are alternately repeatedly laminated so as to have a clearance therebetween has been improved. The sludge dewatering device of this laminated type is installed along the central axis of the cylinder and moves the sludge while simultaneously rotating the screw and simultaneously discharging the moisture contained in the sludge through the gap between the fixed disk and the movable disk, So that the sludge attached to the gap can be self-cleaned.

On the other hand, in the laminated type sludge dewatering apparatus, the water content in the sludge is lowered as the cake is discharged from the front end of the cylinder into which the sludge containing moisture is introduced, thereby increasing the mechanical load acting on the stationary disk and the moving disk. Therefore, the gap between the fixed disk and the movable disk, which is gradually widened as the disk moves from the front end of the cylinder into which the sludge is introduced to the rear end, is gradually narrowed. As a result, although excellent drainage efficiency is obtained at the front end of the cylinder, there is a problem that the mechanical load ratio becomes higher as it goes to the rear end.

In order to solve such a problem, Korean Patent No. 10-1335511 discloses a laminated type in which a plurality of ring-shaped fixed circular plates and a movable circular plate are alternately repeatedly laminated so as to have a gap therebetween, A sludge dewatering device having a smooth dewatering efficiency at a small load at the rear end of the cylinder has been developed by constituting the rear end portion as a screen type of a perforated screen type and having a scraper and a spray structure in a screen type portion.

When the sludge dewatering device is closed by the sludge, the sludge is removed by spraying the cleaning liquid at a high pressure. If the sludge is damaged when the sludge is removed or if the sludge adheres to the perforated network and does not fall off the perforated network, do.

However, since the conventional sludge dewatering device is formed in a cylindrical shape, the sludge separated from the sprayed portion of the high-pressure cleaning liquid is not completely removed from the other side of the perforated network, so that the cleaning operation is not easy, There is a problem that the replacement cost is increased because the perforated network must be entirely replaced.

Korean Patent No. 10-1335511

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a sludge dewatering device that is easy to clean and can reduce replacement cost by forming a cylindrical shape as a whole so that the perforated nuts can be separated from each other .

According to an aspect of the present invention, there is provided a sludge dewatering apparatus comprising: a screen-shaped cylinder having a perforated mesh; A screw installed along the central axis of the screen-shaped cylinder to squeeze the sludge while moving the sludge; And a motor provided at one side of the screw to provide power for driving the screw, wherein the screen-type cylinder comprises a vertical frame formed in the longitudinal direction of the screen-type cylinder, a circumferential frame formed in the circumferential direction of the screen- And a screen grating cell arranged in the partition separated by the grating structure by the vertical frame and the circumferential frame and coupled with the vertical frame and the circumferential frame.

In the present invention, the vertical frames are disposed at uniform angles with respect to the center of the screen-shaped cylinder, and the circumferential frames are spaced apart from the vertical frames at regular intervals.

In the present invention, the screen grid cells are formed by equally spaced holes of a predetermined size; A screen provided on an inner surface of the case and having a minute hole; And a grid frame formed at an edge of the case and the screen to prevent the case and the screen from being separated from each other and fix the screen grid cell to the vertical frame and the circumferential frame.

In the present invention, the grid frame is in close contact with the inner surface of the vertical frame and the inner surface of the vertical frame in the grid partitioned by the vertical frame and the circumferential frame, Is formed.

In the present invention, the case and the screen are disposed in a grid partitioned by the vertical frame and the circumferential frame, and the grid frame is coupled with the vertical frame and the circumferential frame on the upper surface of the vertical frame and the circumferential frame.

A scraper installed on a blade of the screw on which the screen-shaped cylinder is placed and wiping the inner surface of the screen-shaped cylinder; And a spraying unit installed on the wing of the screw on which the screen-shaped cylinder is located and blowing out foreign substances sandwiched in the screen-shaped hole of the screen-type cylindrical body, wherein the scraper rotates the wing so that the sludge is conveyed And the injection means is provided on the other side of the rear side opposite to the front side in which the sludge is squeezed and transferred while the vane is rotating.

In the present invention, the scraper and the spraying unit are continuously installed along the wing or are installed at regular intervals.

In the present invention, the scraper is installed in a manner that a groove having a predetermined depth is inserted into an end portion of the vane and a part thereof is inserted therein, or the scraper is tightly fixed to the inner side surface of the vane of the screw.

In the present invention, the spraying means may include a plurality of nozzles installed on the vanes and spraying air or a cleaning liquid toward the screen-shaped bores of the screen-type cylinder, and a plurality of nozzles formed along the inside of the driving shaft of the screw, Line is provided.

The present invention relates to a stacked-type cylindrical body in which the screen-shaped cylindrical body is continuously provided on one side, and the plurality of fixed disks and the movable disk are alternately repeatedly stacked so as to have a gap therebetween; And a turning guide means for guiding the movable disk to rotate with respect to the fixed disk in response to the power of the screw.

As described above, according to the present invention, since the screen grid cells are installed in the portions separated by the grid structure by the vertical frame and the circumferential frame, if the perforated network is damaged, only the screen grid cells of the corresponding portions can be removed and replaced. And the replacement cost can be reduced.

In addition, since the screen grid cell of the portion in which the sludge is not removed during cleaning of the screen-shaped cylinder can be separated and cleaned, the sludge can be easily removed.

1 is a partially exploded perspective view showing a constitutional relationship of a sludge dewatering apparatus according to an embodiment of the present invention.
2 is an assembled perspective view of the sludge dewatering apparatus shown in FIG.
3 is a partially enlarged view of the screen-shaped cylinder shown in Fig.
FIG. 4 is a perspective view showing the swirl inducing means of the sludge dewatering device shown in FIG. 1 in detail.
4 is a plan view showing an operation process of the turning guide means shown in FIG.
6 is a plan view showing in detail a part of the screw shown in Fig.
FIG. 7 is a partially enlarged cross-sectional view specifically showing the relationship between the screen-shaped cylinder shown in FIG. 1, the injection means and the scraper shown in FIG. 5;
8 is a partially exploded perspective view showing a constitutional relationship of a sludge dewatering apparatus according to another embodiment of the present invention.
9 is an assembled perspective view of the sludge dewatering apparatus shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings.

In addition, when a part is referred to as being "connected" with another part throughout the specification, it includes not only a direct connection but also indirectly connecting the other parts with each other in between. Also, to "include" an element does not exclude other elements unless specifically stated otherwise, but may also include other elements.

FIG. 1 is a partially exploded perspective view showing a constitutional relationship of a sludge dewatering device according to an embodiment of the present invention, FIG. 2 is an assembled perspective view of the sludge dewatering device shown in FIG. 1, Fig.

1 to 3, the sludge dewatering apparatus 100 according to an embodiment of the present invention dewatered water contained in sludge into a cake, and includes a plurality of fixed disks 120 and a movable disk 130, A screen-shaped cylinder C2 continuously formed on one side of the stacked-type cylinder C1, a screen-shaped cylinder C2 formed continuously on one side of the stacked-type cylinder C1, a stacked-type cylinder C1, A screw 110 installed along the central axis of the screen-shaped cylinder C2 to sludge dewatering while moving the sludge while being moved, and a movable disk 130 driven by the screw 110 to rotate about the fixed disk 120 A scraper 180 provided along one side of the wing 112 of the screw 110 where the screen-shaped cylinder C2 is located and wiping the inner surface of the screen-shaped cylinder C2; scraper, a screen-shaped cylinder C2 A spraying means 190 provided along the other side of the wing 112 of the screw 110 for cleaning foreign matter caught in the screen hole of the screen-shaped cylinder C2 and a screw 110 installed at one side of the screw 110, (Not shown) that provides a driving force for driving the motor (not shown).

The fixed disk 120 and the movable disk 130 are ring-shaped annular members having a constant thickness. In the center of the fixed disk 120 and the movable disk 130, through-holes 121 and 131 having the same diameter are formed. Two pairs of protrusions 122 protruding outward are formed on the circumferential surface of the stationary disc 120 and a pair of protrusions 132 protruding outward are formed on the circumferential surface of the movable disc 130. The protrusions 122 and 132 are formed with insertion holes 123 and 133, respectively.

The plurality of fixed disks 120 and the movable disk 130 thus formed are alternately repeatedly stacked to form a single stacked cylinder C1 as shown in FIG. The protrusions 122 of the plurality of fixed disks 120 and the protrusions 132 of the plurality of movable disks 130 are aligned in a line in the longitudinal direction of the stacked cylinder C1. At this time, the fixed disk 120 and the protrusions 122 and 132 of the movable disk 130 do not overlap each other. The holes 121 and 131 of the stationary disk 120 and the movable disk 130 have the same diameter, so that one continuous space is formed. This space is used as a passage for sludge.

The fixed disk 120 of this embodiment has four projections 122 each of which is symmetrical with respect to the through hole 121 of the fixed disk 120. Although four protrusions 122 are formed in the fixed disk 120 in this embodiment, the number of protrusions 122 can be increased or decreased as needed.

Four fixing bars 142 that integrally connect a plurality of fixing discs 120 are coupled to the insertion holes 123 of the protrusion 122 in parallel with the longitudinal direction of the stacked cylinder C1. The fixing bar 142 serves to firmly support the plurality of fixed disks 120 so as not to move or shake in the circumferential direction of the fixed disk 120 as well as the longitudinal direction of the stacked cylindrical body C1. The fixed bar 142 is coupled with the spacing 140 between the fixed discs 120 to maintain a constant distance between the plurality of fixed discs 120 stacked in the longitudinal direction. At this time, the spacers 140 are configured to be thicker than the thickness of the movable disk 130. Therefore, a gap is formed between the plurality of stationary disks 120 and the movable disk 130, respectively.

In this embodiment, the protrusion 132 of the movable disc 130 is stacked so as to be positioned between the protrusions 122 of the fixed disc 120. This is because the protrusion 132 of the movable disc 130 receives less interference from the protrusion 122 of the fixed disc 120 when the movable disc 130 turns and the swing range of the movable disc 130 is increased.

Two pivot bars 143 for integrally connecting a plurality of movable discs 130 are inserted into the insertion hole 133 of the movable disc 130 in the longitudinal direction of the stacked cylindrical pipe C1. The turning bar 143 allows the plurality of movable discs 130 to move integrally. The turning bar 143 is provided with spacers 141 between the movable discs 130 to maintain a constant distance between the plurality of stacked movable discs 130.

This spacer 141 is configured to be thicker than the thickness of the fixed disk 120. A gap corresponding to the thickness difference between the spacers 140 and 141 and the fixed disk 120 and the movable disk 130 is formed between the plurality of stacked disks 120 and the movable disk 130. [ The gap serves as an outlet for the water contained in the sludge to escape to the outside of the stacked cylinder (C1).

The stationary disc 120 and the communicating tubes 150 having the same inner diameters as the through holes 121 and 131 of the movable disc 130 are provided at the other end of the stacked cylindrical cylinder C1. Both ends of the communication pipe 150 are opened so that the material therein can move in the longitudinal direction. An inlet 151 is formed on one side of the circumference of the communication pipe 150. The inlet 151 serves as a passage for supplying the sludge. On the other hand, since the communication pipe 150 is always fixed, it must be coupled with the fixed disk 120 which does not rotate. Therefore, it is necessary to laminate the both ends of the stacked cylinder C1 so that the fixed disk 120 is always arranged.

The screen-shaped cylinder C2 is continuously formed on one side of the stacked cylinder C1 and has the same inner diameter as the through holes 121 and 131 of the fixed disk 120 and the movable disk 130, And is installed in a fixed state. On the other hand, on the other side of the screen-shaped cylinder (C2), a discharge cylinder (155) for discharging the cake from which moisture has been removed is provided.

The screen-shaped cylinder C2 is composed of two semicylindrical members formed in the form of a net (or perforated mesh) and formed of a central portion formed to have a semi-circular shape and a protruding portion protruding outward from both sides of the central portion, And a coupling member for coupling the two semi-cylindrical members to each other. At this time, the center portion of the semi-cylindrical member is composed of a case 242 formed with regularly spaced holes at equal intervals, and a screen 244 provided on the inner surface of the case 242 and having a minute hole, 244 serves as an outlet for water contained in the sludge to escape to the outside of the screen-shaped cylinder C2.

In addition, the screen-shaped cylinder C2 is formed in a lattice-shaped frame 230 and a perforated network so as to have a cylindrical shape as a whole, and is disposed in a partition separated by the frame 230, And a screen grid cell 240 coupled thereto. At this time, the screen grid cell 240 is not provided at both sides of the screen-shaped cylinder C2 because the screw 110 is installed inside the screen-shaped cylinder C2.

The frame 230 includes a vertical frame 232 formed in the longitudinal direction of the cylinder and a circumferential frame 234 formed in the circumferential direction of the cylinder. And the circumferential frames are installed to be arranged in the vertical frame 232 at regular intervals. For example, eight vertical frames 232 are provided at intervals of 45 degrees with respect to the center of the screen-shaped cylinder C2, and the circumferential frames 234 are disposed on both sides of the vertical frame 232 (That is, a total of four may be uniformly spaced apart) between the ends of the vertical frame 232 and both ends of the vertical frame 232 at regular intervals.

The screen grid cell 240 includes a case 242 formed with regularly spaced holes at equal intervals and a screen 244 provided at the inner side of the case 242 and having a minute hole, The hole of the screen 244 serves as an outlet for water contained in the sludge to escape to the outside of the screen-shaped cylinder C2. The case 242 and the screen 244 are prevented from being separated from each other at the edges of the screen grid cell 240 (i.e., at the edges of the case 242 and the screen 244) A grating frame 246 for fixing the grating 240 to the frame 230 is formed and the grating frame 246 is fastened to the vertical frame 232 and the circumferential frame 234, Is fixed to the frame 230.

The grating formed by the vertical frame 232 and the circumferential frame 234 may be provided with a screen grid cell 240 (not shown) To prevent the small debris other than moisture from being caught by the engaging means and blocking the holes formed in the screen-shaped cylinder C2 when water is discharged through the holes of the screen 244 .

When the bolt is used as the coupling means as described above, the grid frame 246 is attached to the case 242 and the screen 242 so as to be in close contact with the inner surface of the grid formed by the vertical frame 232 and the circumferential frame 234. [ The vertical frame 232 and the circumferential frame 234 are formed so as to be perpendicular to the vertical frame 244 and the grid frame 246 is formed with an insertion hole into which the bolt can be inserted, ) May be formed with a groove capable of performing a nut function so that bolts / nuts can be coupled together with the bolts.

When the bolt is used as the coupling means, the case 242 and the screen 244 are disposed in a space defined by the vertical frame 232 and the circumferential frame 234, The screen grating cell 240 may be formed so as to be disposed on the upper surface of the vertical frame 232 and the circumferential frame 234 (i.e., the outer circumferential surface of the screen-shaped cylinder C2). In this case, the grid frame 246 is formed with an insertion hole into which the bolt can be inserted, and a nut function (not shown) is formed on the upper surface of the vertical frame 232 and the circumferential frame 234 so that the bolt / A groove can be formed.

Screws 110 are provided in the stacked cylinder C1 and the screen-shaped cylinder C2. The screw 110 has a driving shaft 111 parallel to the longitudinal direction of the stacked cylindrical body C1 and the screen-shaped cylindrical body C2 and a helical wing 112 formed along the driving shaft 111. [ The screw 110 is installed through the communication pipe 150, the stacked cylinder C1, the screen-shaped cylinder C2, and the discharge cylinder 155. At this time, the vanes 112 of the screw 110 are installed in the communication pipe 150, the stacked cylinder C1 and the screen-shaped cylinder C2, but not located in the discharge cylinder 155 alone.

The wing 112 of the screw 110 rotates about the drive shaft 111 and moves the sludge introduced into the inlet 151 of the communication pipe 150 provided at one end of the stacked cylindrical cylinder C1 to the screen- To the discharge cylinder 155 provided at the other end of the stacked cylindrical body C1 and the screen-shaped cylinder C2 in the longitudinal direction. The wing 112 of the screw 110 is installed on one side of the screw 110 and rotates around the driving shaft 111 by a motor that provides power.

The reinforcing plate 160 having the first, second, and third fastening holes 161, 162, and 163 is coupled to the end of the communication pipe 150. The driving shaft 111 of the screw 110, the fixing bar 142 and the turning bar 143 are coupled to the first, second and third fastening holes 161, 162 and 163 of the reinforcing plate 160, respectively. The driving shaft 111 is rotatably installed in the first coupling hole 161 through a bearing (not shown), the fixing bar 142 is fixedly coupled to the second coupling hole 162, Is rotatably installed in the third fastening hole 163. Therefore, the plurality of fixed disks 120 integrally connected by the fixing bars 142 do not move.

On the outer surface of each reinforcing plate 160, a turn inducing means 170 for pivoting the turn bar 143 is coupled. The turning inducing means 170 is configured to convert the rotational motion of the screw 110 into the reciprocating motion of the turning bar 143.

FIG. 4 is a perspective view showing the swirl inducing means of the sludge dewatering device shown in FIG. 1 in detail. 4, the turning guide means 170 is constituted by a driven gear 171, a driven gear 172, a driven cam 173 and a driven plate 174. [

The main gear 171 is coupled to the drive shaft 111 of the screw 110 and rotates about the drive shaft 111 together with the screw 110. A driven shaft 172 is provided on the left and right sides of the drive shaft 111 in parallel to the drive shaft 111. A driven gear 172 is provided on the driven shaft 172a to engage with the driven gear 171.

A driven cam 173 is coupled to one surface of the driven gear 172. The movable cam 173 is eccentrically installed on the driven gear 172. [ Therefore, the driven cam 173 rotates about the driven shaft 172a of the driven gear 172 when the driven gear 172 rotates. That is, the prime motion cam 173 receives power through the drive unit including the drive shaft 111 of the screw 110, the main gear 171 and the driven gear 172, and the drive unit receives the power from the main gear 171 and the driven gear 172 to the driving cam 173 via the power transmitting means.

The follower plate 174 is rotatably mounted on the drive shaft 111. A plurality of guide grooves 174a and an insertion hole 174b are formed in the plane of the follower plate 174 in the longitudinal direction of the laminated cylinder C1. The movable cam 173 is inserted into the guide groove 174a and the turning bar 143 is coupled to the insertion hole 174b.

The guide groove 174a is formed in a rectangular shape on the follower plate 174. The width of the guide groove 174a is equal to the diameter of the motion cam 173 and the length thereof is equal to or larger than the rotation diameter of the motion cam 173. [ Therefore, the relative movement of the movable cam 173 with respect to the guide groove 174a moves in the longitudinal direction of the guide groove 174a. That is, when the driven gear 172 rotates about the driven shaft 172a, the driven cam 173 pushes the wall surface of the guide groove 174a to pivot the driven plate 174, . When the driven plate 174 is pivoted, the plurality of movable discs 130 are moved in the same direction as the driven plate 174 through the pivot bar 143 .

In this embodiment, another reinforcing plate 160a is further coupled to the outside of the turn inducing means 170. [ The reinforcing plate 160a protects the turn inducing means 170 from an external impact and supports each shaft and the rod.

5 is a plan view showing an operation process of the turning guide means shown in FIG. 5, when the driven gear 171 rotates, the driven gear 172 rotates in the direction opposite to the rotation of the driven gear 171. As shown in Fig. Then, the driving cam 173 coupled to the driven gear 172 rotates about the driven shaft 172a while drawing another circular trajectory. At this time, since the prime motion cam 173 is inserted into the guiding groove 174a of the follower plate 174, when the prime motion cam 173 rotates, the prime motion cam 173 pushes the side wall of the guiding groove 174a, And moves along the longitudinal direction of the arm 174a. As a result, the follower plate 174 reciprocates in a range in which the rotation trajectory drawn by the guide groove 174a is overlapped with the rotation trajectory of the drive cam 173 about the drive shaft 111. [

The turning angle of the follower plate 174 is the highest peak when the movable cam 173 reaches the intermediate position of the guide groove 174a and passes through this vertex to rotate in the opposite direction The angle is reduced and reaches the lowest point when it reaches both ends of the guide groove 174a. That is, when the movable cam 173 rotates, the driven plate 174 reciprocates in a predetermined range. When the screw 110 rotates, the movable disc 130 is reciprocated within a predetermined range by the movable cam 173 and the idle plate 174, and the fixed disc 120 and the movable disc 130 are rotated So as to remove the foreign matter trapped in the clearance between the two. On the other hand, the turning angle of the follower plate 174 can be adjusted through the turning radius of the driving cam 173. The motor is installed on one side of the drive shaft 111 of the screw 110 and provides power to the drive shaft 111 to rotate the screw 110 and to rotate the drive shaft 111 through the turn inducing means 170, And a plurality of movable discs 130 are reciprocatingly moved through the pivot bar 143.

In this embodiment, the screw 110 has a motor at one side of the drive shaft 111, but it may be provided at both sides of the drive shaft 111 with a motor. When a pair of motors are installed on both sides of the drive shaft 111 and are operated, it is necessary to install inverters in order to match the rotational speeds. However, the inventor manufactured the prototype and operated it, and as a result, it was possible to obtain a result that the rotation speed of the motor on which the load is applied and the motor on the side where the load is not applied are adjusted. Accordingly, when one electronic signal (Hertz signal) is applied to the pair of motors, the screw 110 and the plurality of movable discs 130 operate as described above.

Fig. 6 is a plan view showing in detail a part of the screw shown in Fig. 1, Fig. 7 is a partially enlarged cross-sectional view specifically showing the relationship between the screen-shaped cylinder shown in Fig. 1 and the injection means and scraper shown in Fig. to be.

6 and 7, the scraper 180 is installed along one side of the wing 112 of the screw 110 in which the screen-shaped cylinder C2 is located to wipe the inner surface of the screen-shaped cylinder C2 It plays a role. That is, the scraper 180 serves to remove foreign matter accumulated on the inner surface of the screen-shaped cylinder C2 in the dehydrating process. At this time, the scraper 180 is installed along one side of the front side where the wing 112 of the screw 110 rotates and squeezes and transfers the sludge.

The scraper 180 is installed and fixed along one side of the wing 112 so as to be in close contact with or close to the inner surface of the screen-shaped cylinder C2. At this time, the scraper 180 may be fixed with a bolt or the like. The scraper 180 may be made of a material that is softer than the screen 244 of the screen-shaped cylinder C2, for example, plastic or rubber. Meanwhile, the scraper 180 may be fixed not only on one side of the wing 112 but also on the end of the wing 112 by cutting a groove having a certain depth and inserting a part thereof. In addition, the scrapers 180 may be formed continuously along one side of the vanes 112, or may be formed at a plurality of intervals at regular intervals.

The injecting means 190 blows foreign matter caught in the holes of the screen 244 of the screen-shaped cylinder C2. At this time, the spraying unit 190 is configured to spray the air or the cleaning liquid from the other side of the rear side opposite to the front side where the blade 112 of the screw 110 rotates and squeezes and transfers the sludge. That is, in the sludge dewatering apparatus 100 of this embodiment, foreign matter accumulated on the inner surface of the screen-shaped cylinder C2 is first removed from the scraper 180 in the dewatering process, and then the air or the cleaning liquid And blown out the foreign matter trapped in the hole of the screen 244 of the screen-shaped cylinder C2.

The injection means 190 includes a supply line 191 formed along the center of the drive shaft 111 from the end of the drive shaft 111 to a point near the end of the screen-shaped cylinder C2 and a supply line 191 connected to the supply line 191 A plurality of branch lines 192 which are connected with the respective branch lines 192 and which are located on the other side of the vanes 112 and extend to the vicinity of the ends of the vanes 112, A spraying tube 194 connected to the branching tube 193 and a plurality of branch tubes 193 along the other end of the blade 112 and a spray tube 194 formed at regular intervals along the spraying tube 194, And a plurality of nozzles 195 for spraying air toward the screen hole of the cylinder C2.

Accordingly, the injection means 190 injects the air supplied from the outside into the holes of the screen 244 of the screen-shaped cylinder C2 through the nozzles 195, finally through the inside of the drive shaft 111, So that the foreign matter trapped in the hole of the screen 244 can be blown out. By removing the foreign substances stuck in the holes of the screen 244 through the injection means 190, more efficient dewatering effect can be obtained.

In this embodiment, the spraying tube 194 is provided with a plurality of nozzles 195, but it is also possible to provide the nozzles at the end of the branching tube 193 without forming the spraying tube 194.

In this embodiment, the scraper 180 and the spraying unit 190 are disposed on one side and the other side of the vane 112, respectively, but they may be located on the same plane. That is, the scraper 180 and the spraying unit 190 may be disposed on one side or the other side of the vane 112, respectively, but may be arranged along the vane 112 repeatedly or in a predetermined order.

Hereinafter, the overall operation of the sludge dewatering apparatus according to this embodiment will be described in detail.

1 to 7, the sludge is introduced into the inlet 151 of the communication pipe 150 which is connected to one end of the stacked cylinder C1. Then, the screw 110 is operated to move the sludge introduced into the laminated cylinder C1 to the discharge cylinder 155 via the screen-shaped cylinder C2. Accordingly, the moisture contained in the sludge moves together with the sludge and gradually escapes through a gap formed between the plurality of fixed disks 120 and the movable disk 130 by the gravity and a hole of the screen 244.

Also, as the screw 110 is operated, the follower plate 174 starts to reciprocate in the longitudinal direction of the laminated cylinder C1 as shown in Fig. Then, the movable disk 130 reciprocates in the same manner as the driven plate 174 through the pivot bar 143 coupled to the driven plate 174. [ At this time, the fixed disk 120 is not rotated because it is fixed by the fixing bar 142 fastened to the reinforcing plate 150.

Repeated reciprocating motion of the movable disk 130 causes continuous movement inside the stacked cylinder C1. This movement continuously stimulates the sludge so that moisture is smoothly discharged and prevents foreign matter from clogging the gap formed between the fixed disk 120 and the movable disk 130. [

On the other hand, the sludge moved to the screen-shaped cylinder C2 via the stacked cylindrical cylinder C1 is compressed as the wing 112 of the screw 110 rotates, and moisture inside the sludge is discharged to the outside through the hole of the screen 244 . As the wing 112 rotates, the scraper 180 fixed to one side of the vane 112 is rotated in a state of being closely attached to the inner surface of the screen-shaped cylinder C2, And wipes off the foreign matter accumulated on the inner surface of the casing. The high pressure air or cleaning liquid is sprayed toward the holes of the screen 244 through the plurality of nozzles 195 of the spraying means 190 located on the other side of the vane 112, Remove foreign matter. The foreign material accumulated on the inner surface of the screen-shaped cylinder C2 is wiped off by the scraper 180, and the foreign material stuck in the hole of the screen 244 is removed through the spraying means 190. As a result, Can be discharged more smoothly to the outside through the hole of the screen (244).

The cake transferred to the end of the screen-shaped cylinder C2 by the wing 112 of the screw 110 is discharged to the outside through the discharge port (not shown) of the discharge cylinder 155 coupled to the end of the screen- .

FIG. 8 is a partially exploded perspective view showing a constitutional relationship of a sludge dewatering apparatus according to another embodiment of the present invention, and FIG. 9 is an assembled perspective view of the sludge dewatering apparatus shown in FIG.

As shown in FIGS. 8 and 9, the sludge dewatering apparatus 100 according to another embodiment of the present invention dewatered water contained in the sludge into a cake, which comprises a screen-shaped cylinder C2 having a perforated mesh form, A screw 110 installed along the central axis of the cylinder C2 to squeeze the sludge while moving the sludge to dewater the sludge and a screw 110 installed along one side of the wing 112 of the screw 110 in which the screen- A scraper 180 for wiping the inner surface of the cylinder C2 and a foreign material which is installed along the other side of the wing 112 of the screw 110 in which the screen- And a driving motor (not shown) provided at one side of the screw 110 to provide a driving force for driving the screw 110. [

The sludge dewatering apparatus according to another embodiment of the present invention is similar to the sludge dewatering apparatus according to the embodiment of the present invention shown in FIG. 1 except that the stacked cylinder C1 and the pivoting guide means 170 shown in FIG. The remaining components and functions are the same as those of the sludge dewatering apparatus according to the embodiment of the present invention shown in Figs. 1 to 7, and therefore, the detailed description will be replaced with the above description.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be defined by the following claims as well as equivalents thereof.

100: sludge dewatering device 110: screw
120: fixed disk 130: movable disk
170: turning guide means 180: scraper
190: injection means 230: frame
232: vertical frame 234: circumferential frame
240: screen grid cell 242: case
244: screen 246: grid frame

Claims (10)

A screen-shaped cylinder having a perforated network form;
A screw installed along the central axis of the screen-shaped cylinder to squeeze the sludge while moving the sludge; And
And a motor installed at one side of the screw to provide power for driving the screw,
The screen-type cylinder is disposed in a vertical frame formed in the longitudinal direction of the screen-shaped cylinder, a circumferential frame formed in a circumferential direction of the screen-shaped cylinder, and a partition separated into a grid structure by the vertical frame and the circumferential frame, And a screen grid cell coupled to the circumferential frame. The method according to claim 1,
Wherein the vertical frame is disposed at a uniform angle with respect to the center of the screen-shaped cylinder, and the circumferential frames are spaced apart from the vertical frame at regular intervals. The method according to claim 1,
The screen grid cell includes:
A case formed at equal intervals of holes of a predetermined size;
A screen provided on an inner surface of the case and having a minute hole; And
And a grid frame formed at an edge of the case and the screen to prevent the case from being separated from the screen and to fix the screen grid cell to the vertical frame and the circumferential frame. The method of claim 3,
Wherein the grid frame is formed to be perpendicular to the case and the screen so as to be in close contact with the inner surface of the vertical frame and the inner surface of the circumferential frame in the grid partitioned by the vertical frame and the circumferential frame, Wherein the sludge dewatering device is a sludge dewatering device. The method of claim 3,
Wherein the case and the screen are disposed in a grid partitioned by the vertical frame and the circumferential frame and the grid frame is coupled with the vertical frame and the circumferential frame at the top surface of the vertical frame and the circumferential frame. The method according to claim 1,
A scraper installed on the wing of the screw on which the screen-shaped cylinder is located to wipe the inner surface of the screen-shaped cylinder; And a spraying means provided on the wing of the screw on which the screen-shaped cylinder is located, for blowing out foreign matters sandwiched by the screen-shaped holes of the screen-shaped cylinder,
Characterized in that the scraper is installed at a front side of the sludge that is pressed and transported while the sludge is rotated and the sludge dewatering means is disposed at the other side of the sludge pressurization- Device. The method of claim 6,
Wherein the scraper and the spraying unit are continuously installed along the wing or are installed at regular intervals. The method of claim 6,
Wherein the scraper is installed in a shape in which a groove having a predetermined depth is formed at an end of the blade and a part of the groove is inserted into the groove, or the screw is tightly fixed to the inner surface of the blade. The method of claim 6,
The spraying means includes a plurality of nozzles installed in the vanes and spraying air or a cleaning liquid toward the screen holes of the screen cylinder, and a supply line formed along the inside of the drive shaft of the screw and connected to the plurality of nozzles Wherein the sludge dewatering device comprises a sludge dewatering device. The method according to any one of claims 1 to 9,
A stacked cylinder in which the screen-shaped cylinder is continuously provided on one side, and the plurality of fixed disks and the movable disk are alternately repeatedly stacked so as to have a gap therebetween; And
Further comprising a pivoting guide means for receiving the power of the screw and guiding the movable disk to pivot relative to the fixed disk.

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