KR100578546B1 - Dewatering device for sludge - Google Patents

Abstract

In the present invention, a hole is formed in the center and a plurality of pivoting filter plates including two or more engaging protrusions on the circumferential surface and a plurality of non-orbiting filter plates are alternately repeatedly stacked at regular intervals to form one cylinder and the cylinder Squeezed through the pressing means in the longitudinal direction of the conveying the sludge flowing into the cylinder from one side of the cylinder to the other side by pressing to squeeze the moisture contained in the sludge through the laminated gap formed by the plurality of filter plates A dewatering device having a means, comprising: a first connecting member inserted into and engaged in a fastening hole formed in a protrusion of a filter plate which is not pivoted in the longitudinal direction of the cylinder, and formed in a protrusion of the filter plate pivoted in the longitudinal direction of the cylinder. Second connection member inserted into the coupling hole and coupled, respectively connected to both end surfaces of the cylinder and shaped on the circumferential surface Communication including an entrance and exit, each of which is coupled between the cross-section of the communication to completely close both cross-sections of the cylinder and is coupled between the reinforcement plate having at least one reinforcement plate, one or more guide grooves coupled to the first connection member And a driven plate coupled to the second connecting member, a driving cam inserted into the guide groove, and a driving unit for rotating the driving cam. This sludge dewatering device can squeeze out the water contained in the sludge reliably and significantly reduce the wear of the member.

Description

Sludge dewatering device {DEWATERING DEVICE FOR SLUDGE}             

1 is a partially separated perspective view according to an embodiment of the present invention sludge dewatering apparatus,

Figure 2 is a coupling diagram showing the combined state of the dehydration device shown in Figure 1,

3 is a perspective view illustrating main parts of the main part of the dewatering device shown in FIG. 1 in detail;

4 is a plan view showing the operating state of the main part of the dewatering device shown in FIG.

FIG. 5 is an operating state diagram illustrating an operating state of the dehydration apparatus illustrated in FIG. 2.

<Description of Symbols for Major Parts of Drawings>

110: screw conveyor 112: drive shaft

120: first filtration plate 122: through-hole

124: fastener 130: second filtration plate

132: through hole 134: fastening hole

140, 142: washer 150: first connecting member

160: second connection member 200: communication

210: entrance 250: reinforcement plate

300: rotation guide 310: main gear

320: subordinate gear 330: prime cam

340: driven plate 342: guide groove

The present invention relates to a dewatering apparatus for squeezing out moisture contained in sludge, and more particularly, to a sludge dewatering apparatus which can effectively block clogging of sludge by drainage.

In general, the sludge dewatering device is a screw conveyor is installed in the cylinder formed with a plurality of drain holes. An inlet is formed at the top of the cylinder to introduce a mixture of sludge and water. The screw conveyor squeezes the water contained in the sludge while moving the mixture of sludge and water introduced into the cylinder through the inlet in the other direction.

Such sludge dewatering device can minimize the volume of sludge only when the water is well discharged through the drain hole. However, the sludge mixed with water is discharged through the drain hole together with the moisture when moving while being pressed in one direction by the screw conveyor. Therefore, the flocculant is generally administered together with the sludge to the dewatering device to achieve coagulation of the sludge. However, when the flocculant is administered in this way, the sludge hardens to a certain size and blocks the drainage hole, thereby increasing the water content of the finally obtained sludge mass.

In order to solve this problem, a technique for inducing drainage is proposed by installing a washing nozzle in a drain or rotating a body in which drainage is formed. However, in the method of installing the washing nozzle, it is difficult to lower the water content of the sludge by a large amount of washing water sprayed through the washing nozzle, and the method of rotating the body has a disadvantage of large power consumption.

In addition to these methods, as a technique for supplementing the above problems, Japanese Patent Laid-Open No. 66-19011, Japanese Patent Laid-Open No. 5-228635, Korean Utility Model Publication No. 247862, 3, Korean Patent Publication No. 2003-984, 5 And Korean Unexamined Patent Publication No. 2002-38426, 7.

Unlike the prior art, these technologies arrange a plurality of circular filter plates in a row at regular intervals instead of a cylinder in which a plurality of drain holes are formed, and drive some of the filter plates to generate motion friction between the filter plates, thereby preventing foreign matters from getting caught in the gaps between the filter plates. These techniques can effectively remove water from the sludge because there is little clogging caused by sludge.

Japanese Patent Application Laid-Open No. 66-19011 has a structure in which some of the filter plates move in the front, rear, left and right directions of the filter plate fixed by three round rods having eccentric shaft motion. And the Korean Utility Model Publication No. 247862, 3, the Republic of Korea Patent Publication No. 2003-984, 5, the Republic of Korea Patent Publication No. 2002-0038426, 7 to the semi-circular or triangular filter plate so that both ends of the round bar to support The circular bar is eccentrically driven to move the semicircular or triangular filter plate back, forth, and left and right with respect to the fixed filter plate.

However, in the above techniques, the frictional force of the filter plate is generated by the eccentric distance between the driven filter plate center and the fixed filter plate center, so that the frictional motion of the filter plate is weak. As a result, the above techniques are not able to effectively remove the sludge caught in the filter plate and the gap between the filter plate.

In addition, the above techniques generate bending and twisting stresses in the filter plate in such a way that the filter plate is driven by the eccentric motion of the round bar. Therefore, the above techniques must considerably thicken the thickness of the filter plate in order to reduce this stress. Therefore, the above techniques have a relatively small drainage area, which reduces the overall drainage efficiency, and furthermore, a material cost and processing cost are disadvantageous.

On the other hand, Japanese Patent Application Laid-open No. Hei 5-228635 is a method of driving the filter plate in a form in which the screw conveyor is in frictional contact with the filter plate while rotating. This technology effectively prevents sludge getting stuck in the gaps between the filter plates because the screw conveyor drives the filter plates sequentially. However, since the contact area between the filter plate and the screw conveyor is very small, the force transmitted to the filter plate is small. Therefore, the end of the sludge discharge is a problem that the driving of the filter plate is not made properly, slipping occurs and the contact surface of the filter plate and the screw conveyor is worn.

The present invention has been made to solve the above problems, and an object thereof is to provide a sludge dewatering device that can significantly reduce the wear phenomenon of the member while reliably driving the filter plate to effectively discharge the water from the sludge.

According to an embodiment of the present invention, a cylindrical through hole is formed in the center and a plurality of pivoting filter plates including two or more coupling protrusions on the circumferential surface and a plurality of non-orbiting filter plates are alternately repeatedly stacked at a predetermined interval. And forming a press through means in the longitudinal direction of the cylinder to press and transport the sludge introduced into the cylinder from one side of the cylinder to the other side to compress the moisture contained in the sludge formed by the plurality of filter plates In the dewatering device having a pressing means to squeeze through, the first connecting member is inserted into the coupling hole formed in the projection of the filter plate that is not pivoted in the longitudinal direction of the cylinder, the pivoted in the longitudinal direction of the cylinder Second connection member inserted into the coupling hole formed in the projection of the filter plate, the second connection member is connected to each end surface of the cylinder And at least one reinforcing plate coupled to each end surface of the communication, the at least one reinforcing plate coupled to the first connection member and completely closing both end surfaces of the cylinder and coupled to the first connection member. A sludge dewatering apparatus is provided between the plates, the driven plate coupled to the second connection member, a driving cam inserted into the guide groove, and a driving unit for rotating the driving cam.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially separated perspective view according to an embodiment of the sludge dewatering device of the present invention, Figure 2 is a coupling diagram showing a combined state of the dewatering device shown in Figure 1, Figure 3 is a dewatering device of Figure 1 4 is a perspective view illustrating main parts in detail, and FIG. 4 is a plan view showing an operating state of a main part of the dewatering apparatus shown in FIG. 1.

As shown in FIG. 1, the dewatering device of the present invention includes a screw conveyor 110, a first filtration plate 120, a second filtration plate 130, washers 140 and 142, a first connecting member 150, and a second. It is composed of a connection member 160, the communication 200, and the rotation guide portion (300).

The first filtration plate 120 and the second filtration plate 130 are annular members having a predetermined thickness. Through holes 122 and 132 having the same diameter are formed in the center of the first filter plate 120 and the second filter plate 130. Two pairs of protrusions 123 protruding outward are formed on the circumferential surface of the first filter plate 120, and one pair of protrusions 133 protruding outwardly are formed on the circumferential surface of the second filter plate 130. Fastening holes 124 and 134 are formed in each of the protrusions 123 and 133.

The plurality of first filtration plates 120 and the second filtration plate 130 thus formed are alternately stacked to form one cylinder 100 as shown in FIG. 2. The protrusions 123 of the plurality of first filter plates 120 and the protrusions 133 of the plurality of second filter plates 130 are aligned in a line in the longitudinal direction of the cylinder 100, respectively. At this time, the protrusions 123 and 133 of the first filter plate 120 and the second filter plate 130 do not overlap each other. Meanwhile, the through holes 122 and 132 of the first filter plate 120 and the second filter plate 130 have the same diameter to form a continuous space. This space is used as a sludge moving passage.

The first filter plate 120 of the present embodiment has four protrusions 123. Each protrusion 123 is symmetrical with respect to the through hole 122 of the first filtration plate 120. Meanwhile, in the present embodiment, four protrusions 123 are formed on the first filter plate 120, but the number may be increased or decreased as necessary.

In the fastening hole 124 of the protrusion 123, four first connecting members 150, which are integrally connected to the plurality of first filtration plates 120, are coupled in parallel with the longitudinal direction of the cylinder 100. The first connection member 150 serves to securely fix the plurality of first filtration plates 120 not to move or shake in the plane direction of the first filtration plate 120 as well as the longitudinal direction of the cylinder 100. The first connecting member 150 has a washer 140 for maintaining a constant distance between the plurality of first filtration plate 120 stacked up and down is coupled between each of the first filtration plate (120). At this time, the thickness of the washer 140 is thicker than the thickness of the second filtration plate (130). Therefore, a free space is formed between the second filter plates 130 of the plurality of first filter plates 120.

The second filtration plate 130 is stacked such that the protrusion 133 of the second filtration plate 130 is positioned between the arrangement intervals of the protrusion 123 of the first filtration plate 120. This causes the projection 133 of the second filtration plate 130 to receive less interference from the protrusion 123 of the first filtration plate 120 when the second filtration plate 130 rotates, thereby reducing the rotation range of the second filtration plate 130. To enlarge.

In the fastening hole 134 of the second filtration plate 130, two second connecting members 160 which integrally connect the plurality of second filtration plates 130 are inserted in the longitudinal direction of the cylinder 100. The second connecting member 160 helps the plurality of second filtration plates 130 to move integrally. The second connection member 160 is provided with a washer 142 between the second filtration plate 130 to maintain a constant interval of the plurality of stacked second filtration plate 130. The washer 142 is thicker than the thickness of the first filtration plate 120. Therefore, the plurality of stacked first filter plates 120 and second filter plates 130 form gaps between the washers 140 and 142 and the thicknesses of the first filter plate 120 and the second filter plate 130. This gap serves as an outlet for the moisture contained in the sludge to escape to the outside of the cylinder (100).

Both ends of the cylinder 100 are coupled to the communication 200 having the same inner diameter as the through-holes 122 and 132 of the first filtration plate 120 and the second filtration plate 130. Both cross sections of the communication 200 are opened so that an object inside the communication 200 can move in the longitudinal direction. An entrance 210 is formed at a circumferential surface of the communication 100. The entrance 210 serves as a passage for supplying or discharging sludge. On the other hand, since the communication 200 is always kept in a fixed state, it should be coupled with the first filtration plate 120 that does not rotate. Therefore, both cross sections of the cylinder 100 should always be stacked such that the first filtration plate 120 is disposed.

The screw conveyor 110 is installed inside the cylinder 100. The screw conveyor 110 has a drive shaft 112 parallel to the longitudinal direction of the cylinder 100, and simultaneously passes through the cylinder 100 and the communication 200 coupled to both end surfaces of the cylinder 100. The screw conveyor 110 rotates about the drive shaft 112 and communicates the sludge introduced into the entrance 210 of the communication 200 coupled to one end surface of the cylinder 100 to the other end surface of the cylinder 100. While conveying to the (200) and serves as a crimping means for pressing in the longitudinal direction of the cylinder (100). The screw conveyor 110 rotates about the drive shaft 112 by a separate driving means (not shown).

The plurality of reinforcing plates 250 having a plurality of fastening holes 252 are coupled to the end of each communication 200. The driving shaft 112 and the first connection member 150 of the screw conveyor 110 are coupled to the fastening hole 252 of the reinforcement plate 250, respectively. The drive shaft 112 is rotatably installed in the fastening hole 252 via a bearing (not shown), and the first connection member 150 is fixedly coupled to the fastening hole 252. Therefore, the plurality of first filtration plates 120 integrally connected by the first connection member 150 do not move.

The outer side of each reinforcing plate 250 is coupled to the rotation guide 300 for turning the second connecting member 160. The rotation guide 300 converts the rotational motion of the screw conveyor 110 into a reciprocating swinging motion of the second connection member 160.

The structure of the rotation induction part 300 is as follows.

As shown in FIG. 3, the rotation guide part 300 includes a main gear 310, a subordinate gear 320, a motive cam 330, and a driven plate 340.

The main gear 310 is coupled to the drive shaft 112 of the screw conveyor 110 and rotates around the drive shaft 112 together with the screw conveyor 110. On the left and right sides of the drive shaft 112, a plurality of driven shafts 302 are provided in parallel with the drive shaft 112. The driven shaft 302 is provided with a slave gear 320 meshed with the main gear 310.

The driving cam 330 is coupled to one surface of the slave gear 320. The prime cam 320 is installed eccentrically to the slave gear 320. Therefore, the cam 330 rotates about the axis of rotation of the slave gear 320 when the slave gear 320 is rotated. That is, the prime cam 330 receives power through a drive unit composed of the drive shaft 112, the main gear 310, and the subordinate gear 320 of the screw conveyor 110, and the drive unit includes the main gear 310 and the subordinate gear. The rotation of the screw conveyor 110 is transmitted to the prime cam 330 via a power transmission means composed of a gear combination of 320.

The driven plate 340 is rotatably installed on the drive shaft 112. A plurality of guide grooves 342 and fastening holes 344 are formed in the plane of the driven plate 340 in the longitudinal direction of the cylinder 100. The driving cam 330 is inserted into the guide groove 342, and the second connection member 160 is coupled to the fastening hole 344.

The guide groove 342 is formed in a rectangular shape in the driven plate 340. The width of the guide groove 342 is the same as the diameter of the motor cam 330 and the length is the same as or larger than the rotation diameter of the motor cam 330. Therefore, the relative motion with respect to the guide groove 342 of the motive cam 330 moves in the longitudinal direction of the guide groove 342. When rotating about the axis of rotation of the subordinate gear 320, the driving cam 330 moves along the longitudinal direction of the guide groove 342 while turning the driven plate 340 by pushing the wall surface of the guide groove 342. Meanwhile, since the second connecting member 160 is coupled to the driven plate 340, when the driven plate 340 pivots, the plurality of second rotating plates 130 are driven through the second connecting member 160. 340 to rotate in the same direction.

In this embodiment, a separate reinforcement plate 250 is further coupled to the outside of the rotation induction part 300. The reinforcing plate 250 serves to protect the rotation induction part 300 from external impact.

Next, the operation state of the rotation induction unit 300 will be described in more detail.

As shown in FIG. 4, when the main gear 310 rotates, the subordinate gear 320 rotates in a direction opposite to that of the main gear 310. Then, the cam 330 coupled to the subordinate gear 320 rotates about the driven shaft 302 while drawing another circular trajectory. At this time, since the driving cam 330 is inserted into the guide groove 342 of the driven plate 340, when the driving cam 330 rotates, the driving cam 330 pushes the sidewall of the guide groove 342, and the guide groove 342. Move along the length direction of). Accordingly, the driven plate 340 reciprocates in a range where the rotation trajectory of the guide groove 342 overlaps with respect to the rotational trajectory of the driving cam 330 and the driving shaft 112.

The turning angle of the driven plate 340 is the highest point when the driving cam 330 reaches the intermediate position of the guide groove 342, and after this peak is rotated again in the opposite direction by the rotational movement of the driving cam 330. And when it reaches both ends of the guide groove 342 is reduced to the lowest point. That is, when the cam 330 rotates, the driven plate 340 reciprocates in a predetermined range. Accordingly, in the present invention, when the screw conveyor 110 rotates, the second filtration plate 130 reciprocates in a predetermined range by the motive cam 330 and the driven plate 340, causing friction and causing friction between the first filtration plate 120 and the first filter plate. 2, the foreign matter caught in the gap of the filter plate 130 is dropped. On the other hand, the rotation angle of the driven plate 340 can be adjusted through the rotation radius of the driving cam 330.

The following describes the overall operating procedure of the present invention in detail.

FIG. 5 is an operating state diagram illustrating an operating state of the dehydration apparatus illustrated in FIG. 2.

Sludge is introduced into the entrance 210 of the communication 200 coupled to one end of the cylinder 100. Next, the screw conveyor 110 is operated to move the sludge introduced into the cylinder 100 to the other end of the cylinder 100. Accordingly, the moisture contained in the sludge moves gradually together with the sludge and gradually exits to the gap formed between the plurality of first filtration plates 120 and the second filtration plate 130 by gravity.

The driven plate 340 starts the reciprocating swing movement about the longitudinal direction of the cylinder 100 at the same time the operation of the screw conveyor 110 is made. Then, the second rotating plate 130 reciprocates in the same way as the driven plate 340 via the second connecting member 160 coupled to the driven plate 340. At this time, since the first rotating plate 120 is fixed by the first connection member 150 fastened to the reinforcing plate 200, the first rotating plate 120 does not rotate.

Differences in the movement of the first rotating plate 120 that is stationary and the second rotating plate 130 that reciprocates may cause continuous shaking and friction inside the cylinder 100. These fluctuations and friction continuously stimulate the sludge to help the water to be discharged smoothly and to suppress the clogging of foreign substances in the gap space between the first rotating plate 120 and the second rotating plate 130. Therefore, the present invention can effectively perform the dewatering operation of the sludge. Meanwhile, the sludge moved to the other end of the cylinder 100 by the screw conveyor 110 is discharged through the entrance 210 of the communication 200 coupled to the other end of the cylinder 100.

The present invention can surely prevent the drainage port through which the water contained in the sludge is discharged from being blocked by the sludge. In addition, the present invention is less wear phenomenon of the member because the plurality of second filtration plate to prevent clogging of the drain hole is rotated integrally without frictional contact with the other member. Accordingly, the present invention can significantly reduce the sludge leakage while increasing the drainage efficiency by making the thickness of the plate member forming the dewatering space of the sludge thinner than the conventional one.

Although the technical concept of the sludge dewatering apparatus has been described above with the accompanying drawings, this is for illustrative purposes only and is not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (4)

A through-hole is formed in the center and a plurality of pivoting filter plates including two or more engaging protrusions on the circumferential surface and a plurality of non-orbiting filter plates are alternately stacked at regular intervals to form a single cylinder, and the length direction of the cylinder It is provided with a compression means to pass through the sludge flowing in the cylinder from one side of the cylinder to the other side by pressing the compression means for squeezing the moisture contained in the sludge through the laminated gap formed by the plurality of filter plates In one dehydrator, A first connection member inserted into and coupled to a fastening hole formed in the protrusion of the filter plate which is not pivoted in the longitudinal direction of the cylinder; A second connecting member inserted into and coupled to a fastening hole formed in the protrusion of the filter plate pivoting in the longitudinal direction of the cylinder; Communicating both ends of the cylinder and including an entrance formed in the circumferential surface, At least one reinforcing plate coupled to each of the cross sections of the communication to completely close both cross sections of the cylinder and to be coupled to the first connection member; A driven plate having one or more guide grooves installed between the reinforcing plates and coupled with the second connection member; A motive cam inserted into the guide groove, and Sludge dewatering device comprising a drive for rotating the motive cam. The sludge dewatering apparatus according to claim 1, wherein the pressing means is a screw conveyor that rotates in an axial direction of the filter plate. The sludge dewatering apparatus according to claim 2, wherein the driving unit includes power transmission means for transmitting rotation of the screw conveyor to the motive cam. The sludge dewatering apparatus according to claim 3, wherein the power transmission means drives the motive cam by a plurality of gear combinations.

Images