JP4697544B2 - Sludge dewatering equipment - Google Patents

Description

  The present invention relates to a dewatering device that squeezes out moisture contained in sludge, and more particularly to a sludge dewatering device that can effectively block clogging of a drain outlet from which moisture is discharged. .

  In general, a sludge dewatering device has a configuration in which a screw conveyor is installed inside a cylinder in which a large number of drain holes are formed. An inlet is formed in the upper part of the cylinder, and a mixture of sludge and water is introduced. The screw conveyor squeezes out the moisture contained in the sludge while moving the mixture of sludge and water flowing into the cylinder in the other direction through the inlet.

  Such a sludge dewatering device can minimize the volume of sludge when water is well drained through the drain holes. However, when the sludge mixed with water moves while being pressed in one direction by the screw conveyor, it is discharged together with moisture through the drain hole. Therefore, usually, a flocculant is administered to the dewatering apparatus together with the sludge to aggregate the sludge. However, when the flocculant is administered in this way, the sludge is fixed to a certain size and closes the drain hole, so that there is a problem that the water content of the finally obtained sludge mass is increased.

In order to solve such problems, a technique for installing a washing nozzle at the drain outlet and a technique for guiding the drainage by rotating the body formed with the drain outlet have been proposed. However, it is difficult to reduce the moisture content of the sludge by the method of installing the cleaning nozzle with a large amount of cleaning water sprayed by the cleaning nozzle, and the method of rotating the body has a disadvantage that the power consumption is severe.

  In addition to such a method, the following Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, Patent Document 6, Patent Document 7, There is a technique described in Document 8.

  Unlike the above-described techniques, these technologies are arranged in a row with a plurality of circular filter plates at regular intervals instead of a cylinder with a plurality of drain holes, and a part of the filter plates are driven between the filter plates. By generating the kinetic frictional force, foreign matter is prevented from being caught in the gap between the filter plates. Since such a technique hardly causes clogging due to sludge, it is said that moisture can be effectively removed with sludge.

  The technique described in Patent Document 1 is a structure in which a part of the filter plate moves in the front-rear and left-right directions of the fixed filter plate by three round bars that perform eccentric shaft movement. And the technique of patent documents 3-8 is made to support a semicircle or a triangular filter plate by making it drive eccentrically by making both ends of a round bar pass and support a semicircle or a triangular filter plate. The structure is such that the filter plate moves back and forth and from side to side.

  However, in the above technique, the frictional force of the filter plate is generated as much as the eccentric distance between the center of the driven filter plate and the fixed filter plate, so that the dynamic friction force by the filter plate is weak. Therefore, the above technique has a disadvantage in that sludge caught in the gap between the filter plate and the filter plate cannot be effectively removed.

  In the above technique, the filter plate is driven by the eccentric motion of the round bar, and bending and torsional stress is generated in the filter plate. Therefore, the above technique must make the filter plate very thick to reduce such stress. The above technology has the disadvantage that the drainage area is relatively reduced, the overall drainage efficiency is lowered, and more material and processing costs are required.

On the other hand, the technique described in Patent Document 2 is a method of driving the filter plate in a form in which the screw conveyor rotates and frictionally contacts the filter plate. In this technique, since the screw conveyor sequentially drives the filter plates, it is possible to effectively prevent the phenomenon that sludge is caught in the gap between the filter plates. 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. For this reason, the filter plate cannot be driven properly at the end where the sludge is discharged, so that a sliding phenomenon occurs and the contact surface between the filter plate and the screw conveyor is worn.
Japan Published Patent No. 66-19011 Japanese Published Patent No. 5-228635 Republic of Korea Utility Model Notice 247862 Republic of Korea Utility Model Notice 247863 Republic of Korea Published Patent No. 3003-984 Republic of Korea, published patent No. 3003-985 Republic of Korea Published Patent No. 3002-38426 Republic of Korea Published Patent No. 3002-38427

  The present invention is for solving the above-mentioned problems, and sludge that can drive the filter plate well so that moisture can be effectively discharged from the sludge and can significantly reduce the wear phenomenon of the members. The purpose is to provide a dehydrator.

  In the present invention, a large number of swirling filter plates each having a through hole formed in the center and including two or more coupling protrusions on the circumferential surface and a large number of non- swiveling filter plates are alternately laminated at regular intervals. Forming a single cylinder, squeezing means is installed so as to penetrate the cylinder in the length direction, and the sludge flowing into the cylinder is squeezed while being transferred from one side of the cylinder to the other. In a dehydrating apparatus provided with a squeezing means that squeezes out the contained moisture through the stacking gaps formed by the plurality of filter plates, the fastening holes formed in the coupling protrusions of the filter plates that are not swiveled in the longitudinal direction of the cylinder A first coupling member to be inserted and coupled; a second coupling member to be coupled by being inserted into a fastening hole formed in a coupling projection of the filter plate pivoted in the longitudinal direction of the cylinder; Connected to both end faces, circumferential surface At least one reinforcing plate coupled to the first coupling member, wherein the coupling cylinder includes a formed inlet / outlet, and is coupled to the end surfaces of the coupling cylinder, and both ends of the cylinder are completely closed. A sludge dewatering device including a driven plate provided between the reinforcing plates and coupled to the second connecting member, a driving cam inserted into the guiding groove, and a driving unit for rotating the driving cam Is to provide.

  According to the sludge dewatering apparatus of the present invention, the moisture contained in the sludge can be completely squeezed out, and the wear phenomenon of the members can be significantly reduced.

  In the above, the squeezing means may be a screw conveyor that rotates about the arrangement direction of the filter plates. In this case, the drive unit may include power transmission means for transmitting the rotation of the screw conveyor to the driving cam, and the power transmission means drives the driving cam by a combination of a plurality of gears. Can be made into a form.

  According to the present invention, it is possible to provide a sludge dewatering device capable of driving the filter plate well so that moisture can be effectively discharged from the sludge and significantly reducing the wear phenomenon of the members.

  The present invention can completely prevent the drain outlet from which the water contained in the sludge is discharged from being clogged with the sludge.

  Further, according to the present invention, since the plurality of second filter plates that prevent the drainage port from clogging rotate integrally without friction with other members, the wear phenomenon of the members is small.

  Therefore, according to the present invention, the thickness of the plate member forming the sludge dewatering space can be made thinner than before, drainage efficiency can be increased, and sludge leakage can be significantly reduced.

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

  FIG. 1 is a partially separated perspective view of a sludge dewatering apparatus according to an embodiment of the present invention, FIG. 2 is a combined view showing a combined state of the dewatering apparatus shown in FIG. 1, and FIG. FIG. 4 is a plan view showing the main part of the dehydrating apparatus shown in FIG. 1, and FIG. 4 is a plan view showing the operating state of the main part of the dehydrating apparatus shown in FIG.

  As shown in FIG. 1, the dehydrating apparatus of the present invention includes a screw conveyor (110), a first filter plate (120), a second filter plate (130), washers (140, 142), a first connecting member (150). ), The second connecting member (160), the connecting cylinder (200), and the rotation guiding portion (300).

The first filter plate (120) and the second filter plate (130) are annular members having a certain thickness. Through holes (122) and (132) having the same diameter are formed at 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 a pair of protrusions protruding outward are formed on the circumferential surface of the second filter plate (130). A protrusion (133) is formed. Fastening holes (124, 134) are formed in the respective protrusions (123, 133).

  The first filter plate 120 and the second filter plate 130 formed as described above are alternately and repeatedly stacked to form one cylinder 100 as shown in FIG. The protrusions (123) of the multiple first filter plates (120) and the protrusions (133) of the multiple second filter plates (130) are aligned in a row in the length direction of the cylinder (100). At this time, the protrusions (123, 133) of the first filter plate (120) and the second filter plate (130) do not overlap each other. On the other hand, since the diameters of the through holes (122, 132) of the first filter plate (120) and the second filter plate (130) are the same, one continuous space is formed. This space is used as a sludge movement path.

  The 1st filter plate (120) of a present Example has four protrusion parts (123). Each protrusion (123) is symmetrical with each other about the through hole (122) of the first filter plate (120). On the other hand, in the present embodiment, four projections (123) are formed on the first filter plate (120), but the number can be increased or decreased as necessary.

  In the fastening hole (124) of the protrusion (123), four first connecting members (150) for integrally connecting a large number of first filter plates (120) are parallel to the length direction of the cylinder (100). Combined with The first connecting member (150) has a large number of first filter plates (120) not to move in the length direction of the cylinder (100), but also to the plane direction of the first filter plate (120) and to prevent shaking. It plays a role to fix. The first connecting member (150) has a washer (140) for maintaining a constant distance between a plurality of first filter plates (120) stacked one above the other, between the first filter plates (120). Combined with At this time, the washer (140) is thicker than the second filter plate (130). Therefore, a margin space is formed between the second filter plates (130) of the multiple first filter plates (120).

  The second filter plate (130) is stacked such that the protrusions (133) of the second filter plate (130) are positioned between the arrangement intervals of the protrusions (123) of the first filter plate (120). This is because when the second filter plate (130) rotates, the protrusion (133) of the second filter plate (130) weakens the interference of the protrusion (123) of the first filter plate (120), and the second filter plate (130) rotates. This is to increase the rotation range of the filter plate (130).

  In the fastening hole (134) of the second filter plate (130), two second connecting members (160) for integrally connecting a number of second filter plates (130) are inserted in the length direction of the cylinder (100). Is done. The second connecting member (160) allows a number of second filter plates (130) to move together. The second connecting member (160) is provided with a washer (142) that keeps the interval between the plurality of stacked second filter plates (130) constant between the second filter plates (130). The washer (142) member is thicker than the first filter plate (120). Accordingly, the first filter plate 120 and the second filter plate 130 are stacked in the thicknesses of the washers 140 and 142, the first filter plate 120, and the second filter plate 130. A gap is formed as much as the difference. This gap serves as a discharge port through which moisture contained in the sludge flows out of the cylinder (100).

  The connecting tube (200) having the same inner diameter as the through holes (122, 132) of the first filter plate (120) and the second filter plate (130) is coupled to both end faces of the cylinder (100). Both end surfaces of the connecting cylinder (200) are opened so that the object inside the connecting cylinder (200) moves in the length direction. An entrance / exit (210) is formed on the circumferential surface of the connecting tube (200). This doorway (210) serves as a passage for supplying or discharging sludge. On the other hand, since the connecting cylinder (200) always remains fixed, the connecting cylinder (200) must be coupled to the first filter plate (120) that does not perform a turning motion. Accordingly, the both end faces of the cylinder (100) are laminated so that the first filter plate (120) is always disposed.

  A screw conveyor (110) is provided inside the cylinder (100). The screw conveyor (110) has a drive shaft (112) parallel to the longitudinal direction of the cylinder (100), and simultaneously connects the cylinder (100) and the connecting cylinder (200) coupled to both end faces of the cylinder (100). To penetrate. The screw conveyor (110) rotates around the drive shaft (112), and sludge that flows into the inlet / outlet (210) of the connecting cylinder (200) coupled to one end surface of the cylinder (100) is removed from the cylinder (100). While transferring to the connection pipe | tube (200) couple | bonded with the other end surface, it plays the role which compresses in the length direction of a cylinder (100). The screw conveyor (110) rotates about the drive shaft (112) by a separate drive means (not shown).

  A plurality of reinforcing plates (250) in which a plurality of fastening holes (252) are formed are coupled to the end of each connecting tube (200). The drive shaft (112) and the first connecting member (150) of the screw conveyor (110) are coupled to the fastening holes (252) of the reinforcing plate (250), respectively. The drive shaft (112) is rotatably provided in the fastening hole (252) through a bearing (not shown), and the first connecting member (150) is fixedly coupled to the fastening hole (252). Accordingly, the multiple first filter plates (120) connected together by the first connection member (150) do not move.

  A rotation guide part (300) for turning the second connecting member (160) is coupled to the outer surface of each reinforcing plate (250). The rotation guiding unit (300) converts the rotational motion of the screw conveyor (110) into the reciprocating swivel motion of the second connecting member (160).

  The structure of the rotation guiding part (300) is as follows.

  As shown in FIG. 3, the rotation guide part (300) includes a main driving gear (310), a subordinate gear (320), a driving 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 about the drive shaft (112) together with the screw conveyor (110). A plurality of driven shafts (302) are provided in parallel to the drive shaft (112) on the left and right sides of the drive shaft (112). The driven shaft (302) is provided with a dependent gear (320) that meshes with the main driving gear (310).

  A driving cam (330) is coupled to one surface of the slave gear (320). The driving cam (320) is provided so as to be eccentric to the slave gear (320). Therefore, when the dependent gear (320) rotates, the driving cam (330) rotates around the rotation axis of the dependent gear (320).

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

The guide groove (342) is formed in an elliptical shape in the driven plate (340). The width of the guide groove (342) is the same as the diameter of the driving cam (330), and the length thereof is the same as or larger than the rotation diameter of the driving cam (330). Accordingly, the relative movement of the driving cam (330) with respect to the guide groove (342) moves in the length direction of the guide groove (342). When the slave gear (320) rotates about the rotation axis, the driving cam (330) pushes the wall surface of the guide groove (342) to turn the driven plate (340), and along the length direction of the guide groove (342). Moving. On the other hand, since the second connecting member (160) is coupled to the driven plate (340), when the driven plate (340) turns, a plurality of second rotating plates (media) are mediated by the second connecting member (160). 130) swivel in the same direction as the follower plate (340).

  In the present embodiment, a separate reinforcing plate (250) is further coupled to the outside of the rotation guide portion (300). The reinforcing plate (250) serves to protect the rotation guide portion (300) from external impacts.

  The operation state of the rotation guiding unit (300) will be described in more detail.

  When the main driving gear (310) rotates as shown in FIG. 4, the subordinate gear (320) rotates in the direction opposite to the rotation of the main driving gear (310). Then, the driving cam (330) coupled to the dependent gear (320) rotates about the driven shaft (302) while drawing another circular locus. 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) is moved to the guide groove (342). The side wall is pushed and moved along the length direction of the guide groove (342). As a result, the driven plate (340) reciprocates in a range where the rotational trajectory drawn by the guide groove (342) overlaps with the rotational trajectory of the driving cam (330) and the drive shaft (112).

  The swivel angle of the driven plate (340) has the highest vertex when the driving cam (330) reaches the intermediate position of the guide groove (342), and after this vertex, the rotational motion of the driving cam (330) , While rotating in the opposite direction, reaches the lowest point when it reaches both ends of the guide groove (342). That is, when the driving cam (330) rotates, the driven plate (340) reciprocates in a certain range. Therefore, in the present invention, when the screw conveyor (110) rotates, the second filter plate (130) reciprocates in a certain range by the driving cam (330) and the driven plate (340), and causes friction to cause the first filter plate. The foreign matter caught in the gap between (120) and the second filter plate (130) is pushed down. On the other hand, the turning angle of the driven plate (340) can be adjusted by the rotational radius of the driving cam (330).

  Next, the overall operation procedure of the present invention will be described in detail.

  FIG. 5 is an operation state diagram showing an operation state of the dehydrating apparatus shown in FIG.

  Sludge is introduced into the inlet / outlet (210) of the connecting cylinder (200) coupled to one end of the cylinder (100). Next, the screw conveyor (110) is driven, and the sludge that has flowed into the cylinder (100) is moved to the other end of the cylinder (100). As a result, the moisture contained in the sludge slowly moves out of the gaps formed by the multiple first filter plates (120) and the second filter plates (130) by gravity while moving with the sludge.

  The driven plate (340) is operated by the screw conveyor (110) and starts a reciprocating swivel motion with the longitudinal direction of the cylinder (100) as an axis. Then, the second rotating plate (130) reciprocates in the same manner as the driven plate (340) through 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 connecting member (150) fastened to the reinforcing plate (200), it does not rotate.

  The difference in motion between the stopped first rotating plate (120) and the second rotating plate (130) reciprocatingly swirls causes continuous peristalsis and friction inside the cylinder (100). Such peristalsis and friction continuously stimulates the sludge so that water is smoothly discharged, and foreign matter clogging occurs in the space between the first rotating plate (120) and the second rotating plate (130). Suppresses the occurrence. Therefore, the present invention can effectively perform sludge dewatering work. On the other hand, the sludge moved to the other end of the cylinder (100) by the screw conveyor (110) is discharged through the inlet / outlet (210) of the connecting cylinder (200) coupled to the other end of the cylinder (100).

  Although the technical idea for the sludge dewatering device of the present invention has been described with reference to the accompanying drawings, this is merely illustrative of the best embodiment of the present invention and does not limit the present invention. It is obvious that any person having ordinary knowledge in this technical field can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

The partial separation perspective view by one example of the sludge dehydration device of the present invention. The coupling | bonding figure which shows the combined state of the dehydrating apparatus shown by FIG. The principal part perspective view which shows the principal part of the spin-drying | dehydration apparatus shown by FIG. 1 in detail. The top view which shows the operation state of the principal part of the spin-drying | dehydration apparatus shown by FIG. The operation state figure which shows the operation state of the spin-drying | dehydration apparatus shown by FIG.

Explanation of symbols

110 Screw conveyor 112 Drive shaft 120 First filter plate 122 Through hole 124 Fastening hole 130 Second filter plate 132 Through hole 134 Fastening hole 140, 142 Washer 150 First connecting member 160 Second connecting member 200 Connecting cylinder 210 Entrance / exit 250 Reinforcing plate 300 Rotation Guide 310 Main Drive Gear 320 Subordinate Gear 330 Drive Cam 340 Drive Plate 342 Guide Groove

Claims (4)

A single cylinder in which a through hole is formed at the center and a large number of swirling filter plates including two or more coupling protrusions on the circumferential surface and a large number of non- swiveling filter plates are alternately stacked at regular intervals. The squeezing means is installed so as to penetrate the cylinder in the longitudinal direction, and the sludge flowing into the cylinder is squeezed while being transferred from one side of the cylinder to the other side, and the moisture contained in the sludge In a dehydrating apparatus comprising a squeezing means that squeezes out through the laminating gap formed by the multiple filter plates,
A first connecting member that is inserted into and coupled to a fastening hole formed in a coupling protrusion of the filter plate that is not swiveled in the longitudinal direction of the cylinder;
A second connecting member that is inserted into and coupled to a fastening hole formed in a coupling protrusion of the filter plate that is swiveled in the longitudinal direction of the cylinder;
A connecting cylinder that is connected to both end faces of the cylinder and includes an inlet / outlet formed on a circumferential surface,
At least one reinforcing plate coupled to each end face of the connecting cylinder, completely closing both end faces of the cylinder, and coupled to the first connecting member;
A driven plate having one or more guide grooves, provided between the reinforcing plates and coupled to the second connecting member, a driving cam inserted into the guide grooves;
A sludge dewatering device including a drive unit for rotating the driving cam.   The sludge dewatering device according to claim 1, wherein the squeezing means is a screw conveyor that rotates about an arrangement direction of the filter plates.   3. The sludge dewatering device according to claim 2, wherein the driving unit includes power transmission means for transmitting rotation of the screw conveyor to the driving cam.   4. A sludge dewatering device according to claim 3, wherein said power transmission means drives said driving cam by a combination of a plurality of gears.

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