Combined sludge removal device

Abstract

The present invention relates to an improved fourth generation combined sludge removal device. The sludge removal device of the present invention, in the process of sucking up and discharging sludge deposited at the bottom of a sedimentation basin, separately operates a sludge collection section through a sludge collector and a sludge discharge section through a sludge discharger, thereby reducing the travel distance of the sludge discharger. Accordingly, the configuration of a moving unit for removing sludge can be made lighter, and unnecessary power loss can be reduced to improve sludge removal efficiency. Specifically, according to the present invention, a swing-type sludge sucking-up and discharge unit is introduced to greatly reduce the travel distance of the sludge discharger, thereby greatly reducing the length of a sludge discharge hose connecting same to facilitate maintenance of the sludge discharge hose and completely preventing freezing in winter due to exposure to the water surface.

Description

Composite sludge removal device

[0001] The present invention relates to a composite sludge removal device, and more specifically, to an improved composite sludge removal device that reduces sludge discharge by improving sludge collection and suction discharge performance by dividing a collection section of sludge settled on the bottom of a sedimentation tank and a sludge discharge section.

[0002] Typically, sewage water is purified through water treatment processes such as coagulation, sedimentation, and filtration. Specifically, water treatment involves using a coagulant to accelerate the sedimentation rate of fine particles in sewage water, coagulating them into larger sludge clumps. The coagulated sludge is then separated by sedimentation, and the separated sludge is filtered.

[0003] The large amount of sludge that settles at the bottom of a water purification plant's sedimentation tank must be removed regularly. To remove this large amount of sludge, various sludge removal devices have been proposed. Among these, suction-type sludge removal devices, which suck in and discharge sludge along with water, are widely used.

[0004] A conventional suction-type sludge removal device is a device in which a sludge suction discharger equipped with a suction pipe moves across the entire lower bottom section of a sedimentation tank, sucks sludge through a number of sludge inlets formed at the bottom of the suction pipe, and discharges it to the outside for removal.

[0005] This suction-type sludge removal device has a disadvantage in that the sludge suction discharger moves over the entire section of the sedimentation tank to suck and discharge sludge, so it moves and sucks and discharges unnecessarily all the way to the sedimentation tank inlet where sludge hardly accumulates, resulting in the discharge of a large amount of low-concentration sludge. In particular, the suction-type sludge removal device not only increases the length of the sludge discharge hose due to the increase in unnecessary movement section, but also has a problem in that the discharge hose freezes in the winter.

[0006] To solve these problems, the applicant proposed and received a patent for a so-called 4th generation composite sludge removal device that separates the sludge collection section and the discharge section in the process of suctioning and discharging the sludge settled on the bottom of the sedimentation tank (see Korean Patent Publication No. 10-1988251, published on June 13, 2019).

[0007] This composite sludge removal device ultimately reduces unnecessary power loss by reducing the travel distance of the sludge discharger, and also reduces the length of the sludge discharge hose, making maintenance of the sludge discharge hose easier and preventing freezing in winter due to exposure to the water surface.

[0008] The purpose of the present invention is to provide a composite sludge removal device that is a further improvement of the so-called fourth-generation composite sludge removal device that operates a sludge collection section and a sludge discharge section separately in the process of suctioning and discharging sludge settled on the bottom of a sedimentation tank.

[0009] Specifically, the purpose of the present invention is to provide a composite sludge removal device that can simplify the operation of a sludge removal device by providing a swing-type sludge suction discharge unit in an existing composite sludge removal device to significantly reduce the distance of a sludge discharge section, and at the same time, further improve the sludge removal efficiency.

[0010] In addition, another object of the present invention is to further improve the suction and discharge efficiency of a sludge discharger by providing a rake-type rotary sludge crushing unit in an existing composite sludge removal device.

[0011] In addition, another object of the present invention is to provide a scraper inclination adjustment means using the traction force of a rope in an existing composite sludge removal device, thereby making sludge collection and suction / discharge of sludge more smoothly regardless of position (free-position).

[0012] In addition, another object of the present invention is to provide a fixed scraper on the upper side of the sludge collector side in an existing composite sludge removal device to make sludge collection easier.

[0013] An improved fourth-generation composite sludge removal device according to the present invention for achieving the above object comprises: a sludge collector having a movable rail installed on the bottom from the upstream side to the downstream side of a sedimentation basin; a collector moving frame capable of moving from the upstream inlet end of the sedimentation basin to the downstream side along the moving rail; a sludge collection scraper fixedly installed in the collector moving frame so as to be inclinable at an adjustable angle; and a collection scraper inclination adjusting means for adjusting the inclination angle of the sludge collection scraper, the sludge collector pushing and collecting sludge settled on the bottom; a discharger moving frame installed downstream of the sludge collector and capable of moving to the downstream outlet end along the moving rail; and a sludge discharger having a suction pipe extending along the length direction of the discharger moving frame and having a plurality of sludge suction holes formed at a lower portion at intervals, the sludge collected from the upstream side being sucked in and discharged to the outside; A device moving means for allowing the sludge discharger to reciprocate within a limited sludge discharge section from the upstream side to the downstream side of the sedimentation tank dependently by the sludge collector; and a swing-type sludge suction and discharge unit having a fixed frame installed on a downstream wall of the sedimentation tank and fixing a main discharge pipe for discharging sludge to the outside, a swing frame installed to be capable of pivoting horizontally on the fixed frame, a swing discharge pipe connected to the swing frame, and a discharge hose connecting between the swing discharge pipe and the sludge discharger.

[0014] In the composite sludge removal device of the present invention, it is preferable that the swing discharge pipe and the main discharge pipe be connected by a flexible discharge pipe.

[0015] In the composite sludge removal device of the present invention, a rake-shaped rotating crushing unit is further included around the suction pipe of the sludge discharger.

[0016] In the composite sludge removal device of the present invention, the rake-shaped rotary crushing unit includes a boss connecting member having a boss positioned around the suction pipe and capable of rotating at a predetermined angle around the suction pipe, a rake body having a plurality of rakes formed along the longitudinal direction of the suction pipe and a wiper blade formed on the opposite side of the rakes and a rotating scraper connected by the boss connecting member on the opposite side to the rake body.

[0017] In the composite sludge removal device of the present invention, the sludge discharger further has discharger-side scraper rotation control means at both ends along the longitudinal direction of the discharger moving frame.

[0018] In the composite sludge removal device of the present invention, the discharge side scraper rotation control means includes a rack gear, a double-acting cylinder positioned on each side of the rack gear with the rack gear in between and moving the rack gear, a rotating gear that rotates at a certain angle while engaging with the rack gear, and a hinge connecting member that connects the rotating gear and the rotating scraper.

[0019] In the composite sludge removal device of the present invention, it is preferable to further provide a fixed collection scraper to prevent sludge overflow above the sludge collection scraper of the sludge collector. Furthermore, it is preferable to block the gap between the slope-adjustable scraper and the fixed collection scraper with a rubber plate to prevent sludge from leaking out.

[0020] In the composite sludge removal device of the present invention, the collecting scraper inclination adjusting means includes: a movable slide connected to the wire rope and restrained to have a preset free movement section within a slide restraining bracket provided on the upper side of the collector moving frame; a linkage wheel provided at the center of a scraper moving plate of the sludge collecting scraper and having a weight eccentrically provided on one side; and a scraper inclination adjusting rope that connects the movable slide and the linkage wheel and adjusts the inclination angle of the sludge collecting scraper by changing the rotational direction of the linkage wheel according to the free movement direction of the movable slide pulled and moved by the wire rope.

[0021] In the composite sludge removal device of the present invention, the discharger attachment / detachment means includes: a catch bar rotatably installed on one upper side of the collector moving frame; a guide roll formed at the rear end of the catch bar; a fastening bar extended to one upper side of the discharger moving frame so that a catch protrusion formed at the front end of the catch bar is caught and fixed; and a detachable guide bracket provided on the side wall surface of the sedimentation tank and rotating to fasten and detach the catch bar to the fastening bar by rolling the guide roll along the guide surface.

[0022] In the composite sludge removal device of the present invention, the swing-type sludge suction discharge unit includes a sludge discharge valve for controlling sludge discharge; and a sludge discharge flow meter for measuring sludge discharge flow rate.

[0023] In the composite sludge removal device of the present invention, the device moving means and the swing-type sludge suction and discharge unit are controlled to be operated manually or automatically, and further include a controller for suctioning and discharging sludge deposited in the sedimentation tank; wherein the controller is configured to artificially set multiple sections according to the degree of sludge sedimentation in the sedimentation tank, control the movement speed of the sludge collector through the device moving means according to the set sections, and suction and discharge the sludge through the sludge suction and discharge means according to the set sections, and control the movement speed of the sludge collector through the device moving means according to the set flow rate, and automatically control whether to suction and discharge the sludge through the swing-type sludge suction and discharge unit by setting the operation cycle, discharge distance, and number of discharges according to the turbidity of the raw water inflow, and it is preferable that the set flow rate and the set turbidity are set according to the correlation between the sludge moisture content and the discharge amount or the target instantaneous discharge flow rate of the sedimentation tank.

[0024] According to the improved 4th generation composite sludge removal device of the present invention described above, the operation method of the sludge removal device can be simplified and the sludge removal efficiency can be further improved by providing a swing-type sludge suction discharge unit to further significantly reduce the distance of the sludge discharge section.

[0025] According to the improved 4th generation composite sludge removal device of the present invention, the suction and discharge of sludge on the sludge discharger side can be further improved by providing a rake-type rotating sludge crushing unit.

[0026] According to the improved 4th generation composite sludge removal device of the present invention, a scraper rotation control means is provided on the sludge discharger side to enable smoother movement of the sludge discharger and suction and discharge of sludge.

[0027] According to the improved 4th generation composite sludge removal device of the present invention, a two-stage scraper is provided on the sludge collector side to make sludge collection easier.

[0028] Figure 1 is a configuration diagram of a composite sludge removal device according to one embodiment of the present invention.

[0029] Figure 2 is a side view of Figure 1.

[0030] Figure 3a is an enlarged perspective view of the swing-type sludge suction discharge unit of Figure 1, and Figure 3b is a side view thereof.

[0031] Figure 4 is an enlarged perspective view of the sludge collector of Figure 1.

[0032] Figure 5 is a side view taken along line IV-IV of Figure 4.

[0033] Figures 6a and 6b are operating state diagrams of the sludge collection scraper of Figure 4.

[0034] Figure 7 is an enlarged perspective view of the sludge discharger of Figure 1.

[0035] Fig. 8a is a bottom view of Fig. 7, and Fig. 8b is a front view of Fig. 7.

[0036] Figures 9a and 9b are partial enlarged perspective views of the rake-shaped rotary crushing unit of Figure 7, and Figure 9b is an exploded perspective view thereof.

[0037] Fig. 10a is a side view of the sludge discharger-side scraper rotation control means of Fig. 7, and Fig. 10b is a plan view thereof.

[0038] Fig. 11 is a perspective view showing a means for connecting a sludge collector and a sludge discharger.

[0039] Figures 12a to 12e are side views illustrating a process of connecting a sludge collector and a sludge discharger through the interlocking connection means of Figure 11.

[0040] Figures 13a to 13d are side views illustrating the sludge collection and discharge process through the composite sludge removal device of Figure 1.

[0041] Figures 14a to 14d are side views illustrating a return process after the sludge discharge step of the composite sludge removal device of Figure 1.

[0042] Hereinafter, a composite sludge removal device of the present invention will be described in detail through examples with reference to the attached drawings. The embodiments of the present invention may be implemented in various different forms and are not limited to the embodiments described herein. To facilitate understanding of the device of the present invention, the dimensions of the device may be reduced or exaggerated for convenience. Furthermore, identical or similar components are designated by the same reference numerals throughout the specification.

[0043] FIG. 1 is a side open perspective view of a sedimentation tank having a composite sludge removal device installed according to an embodiment of the present invention, and FIG. 2 is a side view of a sedimentation tank having the composite sludge removal device of FIG. 1 installed.

[0044] Referring to FIGS. 1 and 2, a composite sludge removal device (100) according to one embodiment of the present invention includes a sludge collector (110), a sludge discharger (120), a device moving means (130), a sludge suction and discharge means (140), and a controller (150). The composite sludge removal device (100) of the present invention removes sludge accumulated on the bottom of a sedimentation tank (10) of a water treatment facility by collecting, suctioning, and discharging it.

[0045] The sludge collector (110) moves downstream from the upstream inlet of the sedimentation tank (10) and pushes the sludge settled on the bottom to the downstream side to collect it. The sludge discharger (120) is installed downstream of the sludge collector (110) and moves to the downstream outlet. The sludge settled and collected in the sedimentation tank (10) by the sludge collector (110) and the sludge discharger (120) is sucked in through a sludge suction discharge means (140) connected to a swing-type sludge discharge hose (141) and discharged to the outside.

[0046] In this embodiment, the sludge suction discharge means (140) includes a swing-type sludge suction discharge unit (140A) connected to a sludge discharge hose (141), a sludge discharge pipe (142), a sludge discharge valve (143) provided on the sludge discharge pipe (142), and a sludge discharge flow meter (144).

[0047] Figure 3a is an enlarged perspective view of the swing-type sludge suction discharge unit of Figure 1, and Figure 3b is a side view thereof.

[0048] Referring to FIGS. 3a and 3b, the swing-type sludge suction discharge unit (140A) is one of the features of the improved 4th generation composite sludge removal device of the present invention.

[0049] The swing type sludge suction discharge unit (140A) includes a fixed frame (145), a swing frame (147), and a swing discharge pipe (148), as shown in FIGS. 3a and 3b.

[0050] A fixed frame (145) is installed on the downstream wall (12, 16) of the sedimentation tank (10) and fixes a sludge discharge pipe (142) for discharging sludge to the outside. A swing frame (147) is installed on the fixed frame (145) so as to be able to pivot horizontally. A swing discharge pipe (148) is connected to the swing frame (147), and a discharge hose (141) connects between the swing discharge pipe (148) and the sludge discharger (120). A bellows-shaped flexible discharge pipe (146) is connected between the sludge discharge pipe (142) and the swing discharge pipe (148) to enable horizontal rotation of the swing discharge pipe (148).

[0051] The 4th generation operating method composite sludge removal device (100) equipped with such a swing type sludge suction discharge unit (140A) minimizes the sludge discharge section to increase sludge removal efficiency, and further minimizes the exposed part of the sludge discharge hose (141) compared to existing devices to prevent freezing in winter. In addition, the moisture content of the discharged sludge can be lowered by collecting the sludge on the downstream side where the amount of sludge sediment is large and then suctioning and discharging it.

[0052] In the present invention, the sludge discharge pipe (142) is extended to a position lower than the water level of the sedimentation tank (HWL), and the siphon effect generated by the water head difference between them generates the necessary negative pressure without using separate power, so that the sludge accumulated on the bottom of the sedimentation tank can be sucked in and discharged to the outside by simply operating the sludge discharge valve (143).

[0053] The sludge discharge valve (143) can be manually or automatically controlled by a controller (150) described later. In the present invention, it is preferable to control the intake and discharge of sludge through the controller (150).

[0054] The sludge suction and discharge means of the present invention is not necessarily limited as described above, and if necessary, depending on the installation environment of the sedimentation tank (10), a sludge suction pump may be additionally connected to the sludge discharge hose (141) or the sludge discharge pipe (142) to forcibly suck and discharge the sludge accumulated on the bottom of the sedimentation tank (10).

[0055] In this way, the sludge is collected downstream from the upstream side of the sedimentation basin (10) where sludge sedimentation hardly occurs using the sludge collector (110), and the sludge discharge section where the sludge is actually sucked and discharged through the sludge discharger (120) is operated separately from the sludge collection section described above. It is preferable that the sludge discharge section (i.e., the sludge discharger movement section) by the sludge discharger (120) be formed to overlap at least a portion of the downstream side of the sludge collection section (i.e., the sludge collector movement section) by the sludge collector (110).

[0056] The sludge collector (110) and the sludge discharger (120) are installed so as to be able to reciprocate along the sludge collection section along a pair of moving rails (136) installed along the direction of the flow of treated water on the bottom of the sedimentation tank by a device moving means (130).

[0057] Here, the sludge collection section means the entire movement section of the sludge collector (110) within the sedimentation tank (10), and includes not only the actual collection section in which sludge is actually collected by the sludge collector, but also the sludge discharge section for moving the sludge discharger (120) for sludge suction and discharge.

[0058] The device moving means (130) implements a so-called 4th generation system in which the sludge collector (110) is moved back and forth within the sludge collection section from the upstream inlet to the downstream outlet of the sedimentation tank (10), and the sludge discharger (120) is configured to move back and forth within the sludge discharge section dependently by the sludge collector (110) without using a separate moving means.

[0059] In this embodiment, the device moving means (130) includes a winch drum (131), wire rope pulleys (132, 134), a wire rope (133), and a winch drum driving motor (135). The wire rope pulleys (132, 134) are respectively fixed to the side walls (15, 16) of the upstream and downstream ends of the sedimentation basin (10), and the wire rope (133) is connected between these wire rope pulleys (132, 134). The driving force is transmitted to the winch drum (131) through the winch drum driving motor (135), and by using this driving force, the wire rope (133) pulls the sludge collector (110) toward the downstream or upstream side, so that the sludge collector (110) reciprocates within the sludge collection section.

[0060] Here, the winch drum drive motor (135) can be manually or automatically controlled by the controller (150), and the set section-by-section movement speed of the sludge collector (110) can be controlled through the controller (50).

[0061] The sludge discharger (120) is connected to the sludge collector (110) through a discharger attachment / detachment means (190, see FIG. 4) described later, and when the sludge collector (110) is moved by the device moving means (130), the sludge discharger (120) connected to the sludge collector (110) moves back and forth along the sludge discharge section.

[0062] The controller (150) manually or automatically operates the winch drum drive motor (135) of the device moving means (130) and the sludge discharge valve (143) of the sludge suction and discharge means (140), thereby controlling the moving section and section speed according to the degree of sludge sedimentation in the sedimentation tank, and can also control the instantaneous discharge flow rate of the sedimentation tank. In addition, it controls the discharger attachment / detachment means (190), and can more freely operate and control the sludge removal device (100) in a manual or automatic mode depending on the situation.

[0063] Hereinafter, the configuration of the sludge collector (110), the sludge discharger (120), and the discharger attachment / detachment means (190) according to the present embodiment will be described in more detail with reference to the attached drawings.

[0064] Fig. 4 is an enlarged perspective view of the sludge collector of Fig. 1, and Fig. 5 is a side view of the sludge collector taken along line IV-IV of Fig. 4.

[0065] Referring to FIGS. 4 and 5, the sludge collector (110) includes a collector moving frame (111), a sludge collection scraper (112), and a collection scraper inclination adjustment means (160). The sludge collector (110) moves from the upstream inlet of the sedimentation tank (10) to the downstream side and uses the sludge collection scraper (112) to push and collect sludge settled on the bottom to the sludge discharge section on the downstream side of the sedimentation tank (10).

[0066] Another feature of the improved 4th generation composite sludge removal device of the present invention is that the sludge collector (110) of the present invention is configured as a two-stage collection scraper in which, in addition to the sludge collection scraper (112), a fixed collection scraper (114) is further provided on top of the sludge collector (110). The fixed collection scraper (114) installed on top of the sludge collector (110) prevents the sludge from overflowing upward when the amount of sludge is large.

[0067] The collector moving frame (111) has a pair of collector trolleys (113) installed at the bottom, and the pair of collector trolleys (113) can move in the direction of the flow of the treated water of the sedimentation tank (10) by running along a pair of moving rails (136) installed on the bottom surface (11) of the sedimentation tank.

[0068] The sludge collection scraper (112) is installed with its axis fixed so that it can rotate within a preset angle range and has an adjustable inclination angle within the collector moving frame (111).

[0069] In this embodiment, the sludge collection scraper (112) comprises a scraper movable bracket (112a) and a scraper blade (112b) that is replaceably screw-fastened to the lower end of the scraper movable bracket (112a) to scrape the bottom surface (11) of the sedimentation tank and collect the upstream sludge to the downstream side. Here, the scraper blade (112b) is made of a wear-resistant rubber material to prevent damage to the bottom surface of the sedimentation tank and to facilitate the movement of the sludge collector (110).

[0070] The collection scraper inclination adjustment means (160) can adjust the inclination angle of the sludge collection scraper (112) according to the movement direction of the sludge collector (110).

[0071] In this embodiment, the collection scraper inclination adjustment means (160) includes a slide restraint bracket (161), a movable slide (162), a linkage wheel (163), and a scraper inclination adjustment rope (164).

[0072] The movable slide (162) is connected to a wire rope (133) and is restrained and connected so that it can move freely for a preset section along the movement direction within the slide restraint bracket (161) provided on the upper side of the collector moving frame (111).

[0073] The linkage wheel (163) is integrally provided to be rotatable at the longitudinal center of the scraper movable bracket (112a) of the sludge collection scraper (112), and weights (165) are fastened to restore the position when the tension is released through the movable slide (162) eccentrically along the wheel circumference.

[0074] The scraper inclination adjustment rope (164) connects the movable slide (162) and the linkage wheel (163) to be linked, and changes the rotation direction of the linkage wheel (163) according to the free movement direction of the movable slide (162) pulled and moved by the wire rope (133), thereby adjusting the inclination angle of the sludge collection scraper (112).

[0075] Figures 6a and 6b are side views showing the operating state of the sludge collection scraper of the sludge collector of Figure 4.

[0076] Referring to FIGS. 6a and 6b, the sludge collector (110) is connected to the wire rope (133) of the device moving means (130) via the movable slide (162).

[0077] The movable shaft (162) pulls the sludge collector (110) via the wire rope (133) to move from the upstream inlet end of the sedimentation tank (10) to the lower side for sludge collection, or conversely, to move from the downstream outlet end of the sedimentation tank (10) to the upper side for position restoration.

[0078] In the process of the movable slide (162) freely moving within a preset section within the slide restraint bracket (161), the scraper inclination adjustment rope (164) coupled to the lower side is held and moved, and the rotation direction of the linkage wheel (163) is changed according to the free movement direction of the movable slide (162) through the scraper inclination adjustment rope (164), thereby adjusting the inclination angle of the sludge collection scraper (112).

[0079] As shown in Fig. 6a, in the process of the sludge collector (110) being pulled downstream from the upstream inlet end of the sedimentation tank (10) and pushing the sludge accumulated on the bottom downstream to collect it, the sludge collection scraper (112) rotates counterclockwise and forms a preset inclination angle toward the downstream side of the sedimentation tank (10) while the collection scraper (112) is lowered.

[0080] Conversely, as shown in FIG. 6b, in the process of the sludge collector (110) being pulled upstream from the downstream outlet end of the sedimentation tank (10) and returned to its original position, the sludge collection scraper (112) rotates clockwise and the collection scraper (112) is lifted away from the bottom surface (11) of the sedimentation tank and moved back to the upstream inlet end, thereby preventing interference that may occur due to the sludge collection scraper (112).

[0081] Fig. 7 is an enlarged perspective view of the sludge discharger of Fig. 1, Fig. 8a is a bottom view of Fig. 7, and Fig. 8b is a front view of Fig. 7.

[0082] Referring to FIGS. 7 and 8, the sludge discharger (120) includes a discharger moving frame (121) and a suction pipe (123), moves dependently to the downstream outlet by the sludge collector (110), and sucks in the sludge settled and collected on the downstream side through a sludge suction discharge means (140) connected to a sludge discharge hose (141) and discharges it to the outside.

[0083] The discharge moving frame (121) is provided with a pair of discharge trolleys (122) installed at the bottom of the discharge moving frame (121), similar to the collector moving frame (111) of the sludge collector (110), so that the discharge trolleys (122) can move and run along a moving rail (136) installed in the direction of the flow of the treated water.

[0084] A suction pipe (123) is installed to extend along the length of the discharger moving frame (121), and a plurality of sludge suction holes (123a) are formed at intervals at the bottom, and a pipe connecting tube (124) is formed to extend upward at the center to connect a sludge discharge hose (141) of a sludge suction discharge means (140).

[0085] Another feature of the improved 4th generation composite sludge removal device of the present invention is that it further includes a plurality of rake-shaped rotating crushing units (170) around the suction pipe (123) of the sludge discharger (120).

[0086] As shown in FIGS. 7 and 8, a plurality of rake-shaped rotary crushing units (170) are mounted along the circumference of the suction pipe (123).

[0087] Fig. 9a is an enlarged view of a portion of the rake-shaped rotary crushing unit (170) of the present invention, and Fig. 9b shows its disassembled view.

[0088] Referring to Fig. 9a, a rake body (171) having a plurality of shredder rakes (171a) formed thereon is connected by a boss connecting member (173). A plurality of shredder rakes (171a) are formed at one end of the rake body (171) along the length direction of the suction pipe (123), and a plurality of wiper blades (171b) are formed at the other end of the rake body (171) on the opposite side of the shredder rakes (171a). Referring to Figs. 9a and 9b, the boss connecting member (173) is capable of rotating at a certain angle around the suction pipe (123) since a plurality of bosses (172) are positioned around the periphery of the suction pipe (123). In this embodiment, the boss connecting member (173) is composed of a horseshoe-shaped first boss connecting member (173a) and a second boss connecting member (173b) coupled to the first boss connecting member (173a), and a rake body (171) is fitted into a groove (173c) of the first boss connecting member (173a) and attached by welding or the like, and the second boss connecting member (173b) is coupled to a rotary scraper (174) so ​​that the boss connecting member (173) is rotatably coupled to the suction pipe (123) through the boss (172).

[0089] Unlike existing devices, the sludge discharger (120) of the present invention is provided with a rake-type rotary crushing unit (170), so that when the sludge discharger (120) moves downstream of the sedimentation tank (10), sludge with a low moisture content and high density can be crushed by a plurality of crushing rakes (171a), thereby improving the compaction fluidity. In addition, the area around the sludge suction hole (123a) blocked by foreign substances such as fallen leaves can be easily removed by a wiper blade (171b), thereby helping to easily suction and discharge the sludge.

[0090] Another feature of the improved 4th generation composite sludge removal device of the present invention is that it has a rake-shaped rotary crushing unit (170) and a sludge discharger-side scraper rotation control means (180) that can adjust the rotation of the rotary scraper (174) by a certain angle.

[0091] Fig. 10a shows a side view of the sludge discharger-side scraper rotation control means of Fig. 7, and Fig. 10b shows a plan view thereof.

[0092] Referring to FIGS. 10a and 10b, the sludge discharger (120) is provided with discharger-side scraper rotation control means (180) at both ends in the longitudinal direction of the discharger moving frame (121). In the present embodiment, the discharger-side scraper rotation control means (180) includes a rack gear (181), double-acting cylinders (182a, 182b) positioned on both sides of the rack gear (181) with the rack gear (181) interposed therebetween and moving the rack gear (181) in the left-right direction, a rotation gear (183) that engages with the rack gear (181) and rotates at a certain angle, and a hinge connecting member (184) that connects the rotation gear (183) and the rotation scraper (174).

[0093] The double-acting cylinder (182a, 182b) is composed of, for example, a pair of left and right air cylinders, and the axles of the pair of cylinders are connected by a connecting plate (185), and a rack gear (181) is positioned on the connecting plate (185). With this structure, when air is introduced into one cylinder (182b), the one cylinder (182b) expands and the opposite cylinder (182a) contracts, causing the rack gear (181) to move. Conversely, when the opposite cylinder (182a) expands and one cylinder (182b) contracts, the rack gear (181) moves in the opposite direction. As the rack gear (181) moves linearly, the rotary gear (183) meshed with the rack gear (181) rotates, and the rake-shaped rotary crushing unit (170) rotates together at a certain angle, and the rotary scraper (174) is also inclination-adjusted.

[0094] Fig. 11 is a perspective view illustrating a linkage fastening means of a sludge collector and a sludge discharger, and Figs. 12a to 12e are side views illustrating a process of fastening a sludge collector and a sludge discharger through the linkage fastening means of Fig. 11.

[0095] Referring to FIG. 11 and FIGS. 12a to 12e, the discharger attachment / detachment means (190) according to the present embodiment includes a catch bar (191), a guide roll (192), a fastening bar (193), and a detachable guide bracket (194), and the sludge discharger (120) is reciprocated in a sludge discharge section dependently by the sludge collector (110) while being attached to the sludge collector (110).

[0096] The catch bar (191) is installed with its center rotatably fixed to the upper part of both ends of the collector moving frame (111). The guide roll (192) is installed with a rotatably fixed to the upstream end of the catch bar (191) in the sedimentation tank.

[0097] The fastening bar (193) is formed to extend to the upper part of both ends of the upstream side of the sedimentation tank of the discharge moving frame (121) so that the fastening bar (191) is fastened by the fastening jaw formed at the downstream side of the sedimentation tank.

[0098] A detachable guide bracket (194) is provided on both side walls of the sedimentation tank (10), and as shown in FIGS. 12a to 12e, when the sludge collector (110) moves, the guide roll (192) moves along the guide surface (195) of the detachable guide bracket (194), and the guide roller (192) rotates according to the height change that occurs, so that the hooking jaw of the hooking jaw (191) is hooked to the fastening jaw (193), and the sludge collector (110) is fastened to the sludge discharger (120). Conversely, when the hooking jaw of the hooking jaw (191) comes out from the fastening jaw (193), the sludge collector (110) is separated from the sludge discharger (120).

[0099] Meanwhile, the starting position of the sludge discharge section in which sludge suction and discharge are actually performed through the sludge discharger (120) within the sedimentation tank (10) can be adjusted through the installation position of the detachable guide bracket (194) that guides the sludge discharger (120) to be coupled or separated from the sludge collector (110).

[0100] FIGS. 13a to 13d are side cross-sectional views illustrating a sludge collection and discharge process through the sludge removal device of FIG. 1, and FIGS. 14a to 14d are side cross-sectional views illustrating a return process after the sludge discharge step of the sludge removal device of FIG. 1.

[0101] Referring to FIGS. 13a to 13d, the process of collecting and suctioning and discharging sludge from a sedimentation tank (10) through a sludge removal device (100) of the present embodiment is performed through a sludge collection step, a discharger fastening step, and a sludge suction and discharge step.

[0102] First, in the sludge collection step, as illustrated in FIGS. 13a and 13b, the winch drum (131) is driven by the winch drum drive motor (135) of the device moving means (130) to pull the sludge collector (110) downstream of the sedimentation tank (10) via the wire rope (133). The movable slide (162) moves freely within a preset section and adjusts the inclination angle by vertically setting the sludge collection scraper (112) to have the inclination angle required for sludge collection. Thereafter, the sludge collector (110) is moved along the moving rail (136) from the upstream inlet end of the sedimentation tank (10) to the downstream side to push and collect the upstream sludge to the downstream side where the sludge discharger (10) stands.

[0103] In the discharger fastening step, as illustrated in Fig. 13c, the sludge collector (110) passes the starting position of the sludge discharge section through the sludge discharger (120). In this process, the guide roll (192) of the discharger attachment / detachment means (190) moves along the guide surface (195) of the attachment / detachment guide bracket (194). At this time, according to the height change that occurs, the catch bar (191) provided on the collector moving frame (111) is rotated so that the catch bar (193) provided on the discharger moving frame (121) catches the catch bar, thereby enabling the sludge collector (110) and the sludge discharger (120) to move as one. At this time, the rake-shaped rotating crushing unit (170) is rotated downward by the discharger-side scraper rotation control means (180) so that the sludge is crushed by a plurality of crushing rakes (171a), thereby facilitating discharge.

[0104] In the sludge suction discharge step, as illustrated in FIG. 13d, the sludge discharger (120) is pulled by a wire rope (133) and moves toward the downstream outlet end of the sedimentation tank (10) together with the sludge collector (110), and a large amount of sludge settled on the downstream side of the sedimentation tank is sucked in by using the negative pressure transmitted to the suction pipe (123) through the sludge discharge hose (141) of the swing-type sludge suction discharge unit (140A) from the sludge suction discharge means (140) and discharged to the outside.

[0105] Referring to FIGS. 14a to 14d, the process of collecting and suctioning sludge from a sedimentation tank through the sludge removal device (100) of the present embodiment and then returning it to the original starting position consists of a discharger return step, a discharger separation step, and a collector return step.

[0106] First, in the discharger return step, as illustrated in FIGS. 14a and 14b, the winch drum (131) is driven by the winch drum drive motor (135) of the device moving means (130) to pull the sludge collector (110) upstream of the sedimentation tank (10) via the wire rope (133). The movable slide (162) moves freely in a preset section upstream of the sedimentation tank (10), and the inclination angle is adjusted so that the sludge collection scraper (112) is lifted horizontally so that it does not interfere with the bottom surface (11) during movement. Similarly, the inclination angle of the rake of the rake-shaped rotary crushing unit (170) of the sludge discharger (120) is also adjusted by the discharger-side scraper rotation adjustment means (180) so that interference does not occur during movement. After that, the sludge discharger (120) is pulled through the sludge collector (110) that has started to move and returns to the sludge discharge starting point where the detachable guide bracket (194) is installed.

[0107] In the discharge separation step, as illustrated in Fig. 14c, the sludge discharger (120) is pulled downstream of the sedimentation tank by the sludge collector (110) and passes the location where the removable guide bracket (194) corresponding to the starting point of the sludge discharge section is installed. During this process, the guide roll (192) moves along the guide surface (195) of the removable guide bracket (194). Through the height change that occurs at this time, the hook bar (191) is rotated, and the hooking jaw of the hook bar (191) that was hooking the fastening bar (193) provided on the discharger moving frame (121) is removed, thereby separating the sludge discharger (120) from the moving sludge collector (110).

[0108] And, in the collector return step, as shown in Fig. 14d, the sludge discharger (120) continues to move the separated sludge collector (110) to return it to the starting point of the sludge collection section located at the upstream inlet end of the sedimentation tank (10).

[0109] Meanwhile, as shown in FIG. 2, the starting point of the sludge collection section through the sludge collector (110) and the ending point of the sludge discharge through the sludge discharger can be designated through a separate position detection sensor (14), and the movement direction and distance can be controlled through the device movement means (130) through the controller (150) based on the position information of the sludge collector (110) and the sludge discharger (120) obtained through the same.

[0110] In this embodiment, the sludge collection and suction discharge process and the return to the starting position process of the sludge removal device (100) described above can be selectively controlled in manual operation mode or automatic operation mode through the controller (150).

[0111] First, in the manual operation mode (section / speed / valve control mode), multiple sections are artificially set according to the degree of sludge sedimentation in the sedimentation tank (10), and the movement speed of the sludge collector (110) is controlled through the operation control of the winch drum drive motor (135) of the device movement means (130) according to the set sections, and the operation is controlled to suck and discharge sludge through the opening and closing control of the sludge discharge valve (143) of the sludge suction and discharge means (140) according to the set sections.

[0112] For example, when the sludge collection section is divided into five sections through the above manual operation mode, the operation can be controlled to move at high speed (1 m / min) in the three upstream sections (the first to third sections) where only sludge is collected by the sludge collector (110) among the five sections (the first to fifth sections), move at medium speed (0.5 m / min) in the upstream section (the fourth section) among the two downstream sections (the fourth to fifth sections) corresponding to the sludge discharge section among the sludge collection sections, and move at low speed (0.2 m / min) in the last downstream section (the fifth section).

[0113] In this way, when the sludge removal device (100) is operated in manual operation mode through the controller (150), the sludge collection and suction discharge methods can be applied differently depending on the sludge settling characteristics according to the sedimentation tank (10) section, thereby further lowering the moisture content of the discharged sludge.

[0114] And, in the automatic operation mode (flow / speed / turbidity composite control), the movement speed of the sludge collector (110) and whether to suck in and discharge sludge through the sludge suction / discharge means (140) are automatically controlled according to the set flow rate through the device movement means (130).

[0115] Here, the automatic setting mode can set the operating cycle and number of discharges according to the correlation between the sludge function ratio and discharge amount or the turbidity of the inflow to the sedimentation tank, and can determine whether to discharge or not in conjunction with the water level of the effluent storage tank.

[0116] Therefore, when the sludge removal device (100) is controlled through an automatic operation mode, the sludge collection and sludge suction discharge process according to the sludge concentration can be automatically controlled, and a certain amount of sludge can be discharged without separate artificial control, and a low moisture content of the discharged sludge can be maintained.

[0117] In this way, according to the improved 4th generation composite sludge removal device (100) of the present embodiment, in the process of sucking and discharging sludge settled on the bottom of the sedimentation tank, the sludge collection section through the sludge collector (110) and the sludge discharge section through the sludge discharger (120) are operated separately, thereby ultimately reducing the moving distance of the sludge discharger (120), thereby simplifying the configuration of the moving part for sludge removal and reducing unnecessary power loss, thereby improving the sludge removal efficiency.

[0118] In addition, the length of the sludge discharge hose is reduced due to the reduced movement distance of the sludge discharger (120), making it easier to maintain the sludge discharge hose, and preventing freezing of the sludge discharge hose due to exposure to the water surface in winter.

[0119] In addition, by pushing and collecting sludge from the upstream side of the sedimentation tank where less sludge is settled to the downstream side through the sludge collector and sucking and discharging the sludge settled from the downstream side of the sedimentation tank together with the sludge collected through the sludge collector through the sludge discharger, the moisture content in the discharged sludge can be reduced, thereby increasing the efficiency of subsequent sludge treatment.

[0120] Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and it is possible to implement various modifications or changes within the scope of the patent claims, the detailed description of the invention, and the attached drawings, and it is obvious that this also falls within the scope of the present invention.

Claims

1. A moving rail installed on the bottom from the upstream to the downstream side of the sedimentation tank; A sludge collector having a collector moving frame that can move from the upstream inflow end of the sedimentation tank to the downstream side along the moving rail, a sludge collection scraper that is installed with an inclination angle adjustable in the collector moving frame, and a collection scraper inclination adjustment means for adjusting the inclination angle of the sludge collection scraper, and that pushes and collects sludge settled on the bottom; A sludge discharger having a discharger moving frame installed downstream of the sludge collector and capable of moving along the moving rail to the downstream outlet, and a suction pipe extending along the length of the discharger moving frame and having a plurality of sludge suction holes formed at a lower interval, and which sucks in sludge collected from the upstream side and discharges it to the outside; A device moving means for causing the sludge discharger to reciprocate within a sludge discharge section limited area dependently by the sludge collector from the upstream side to the downstream side of the sedimentation tank; and A composite sludge removal device comprising: a swing-type sludge suction and discharge unit having a fixed frame installed on a downstream wall of the sedimentation tank and fixing a main discharge pipe for discharging sludge to the outside; a swing frame installed to be capable of pivotally rotating horizontally on the fixed frame; a swing discharge pipe connected to the swing frame; and a discharge hose connecting the swing discharge pipe and the sludge discharger.

2. In paragraph 1, A composite sludge removal device characterized in that the swing discharge pipe and the main discharge pipe are connected by a flexible discharge pipe.

3. In paragraph 1, A composite sludge removal device further comprising a rake-shaped rotating crushing unit around the suction pipe of the above sludge discharger.

4. In paragraph 3, The above-mentioned rake-type rotary shredding unit is a composite sludge removal device characterized by including a boss connecting member having a boss positioned around the circumference of the suction pipe and capable of rotating at a predetermined angle around the suction pipe, a rake body having a plurality of rake parts formed along the longitudinal direction of the suction pipe and a wiper blade formed on the opposite side of the rake part and a rotating scraper connected by the boss connecting member on the opposite side to the rake body.

5. In paragraph 1, A composite sludge removal device characterized in that the above sludge discharger further comprises discharger-side scraper rotation control means at both ends along the longitudinal direction of the discharger moving frame.

6. In paragraph 5, The above discharge-side scraper rotation control means is a composite sludge removal device including a rack gear, a double-acting cylinder positioned on each side of the rack gear and moving the rack gear, a rotating gear that engages with the rack gear and rotates at a certain angle, and a hinge connecting member connecting the rotating gear and the rotating scraper.

7. In paragraph 1, A composite sludge removal device characterized in that a fixed collection scraper for preventing sludge overflow is further provided above the sludge collection scraper of the above sludge collector.

8. In paragraph 1, The above collection scraper incline adjustment means is, A movable slide connected to the above wire rope and restrained so as to have a preset free movement range within the slide restraint bracket provided on the upper side of the collector moving frame; A linkage wheel provided at the center of the scraper movable plate of the above sludge collection scraper and having a weight added eccentrically on one side; and A composite sludge removal device comprising a scraper inclination adjusting rope that connects the movable slide and the linkage wheel and adjusts the inclination angle of the sludge collection scraper by changing the rotational direction of the linkage wheel according to the free movement direction of the movable slide pulled and moved by the wire rope.

9. In paragraph 1, The above discharge device detachment means is, A catch bar rotatably installed on the upper part of one side of the above collector moving frame; A guide roll formed at the rear end of the above-mentioned hook; A fastening bar formed to extend to the upper part of one side of the discharger moving frame so that a catch formed at the front end of the catch bar is caught and fixed; A composite sludge removal device comprising: a detachable guide bracket provided on a side wall surface of the sedimentation tank and configured to move the guide roll along the guide surface so that the catch bar rotates to be fastened to and separated from the fastening bar; 10. In paragraph 1, The above swing-type sludge suction discharge unit is a composite sludge removal device including a sludge discharge valve for controlling sludge discharge; and a sludge discharge flow meter for measuring the sludge discharge flow rate.

11. In paragraph 1, The above device moving means and the swing type sludge suction and discharge unit further include a controller that manually or automatically controls operation and suctions and discharges the deposited sludge in the sedimentation tank; The above controller, Depending on the degree of sludge sedimentation in the above sedimentation tank, multiple sections are artificially set. Control the movement speed of the sludge collector through the device movement means according to the above-mentioned set section, It is configured to suck and discharge sludge through a sludge suction and discharge means according to the above-mentioned set section, It is configured to automatically control whether to suck and discharge sludge through the swing-type sludge suction and discharge unit by controlling the movement speed of the sludge collector through the device moving means according to the set flow rate and setting the operating cycle, discharge distance, and discharge number of times according to the raw water inflow turbidity. A composite sludge removal device in which the above set flow rate and set turbidity are set according to the correlation between the sludge function ratio and the discharge amount or the target instantaneous discharge flow rate of the sedimentation tank.

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