KR102543741B1 - Screens for removing sand and debris - Google Patents

Abstract

The present invention provides a screen for removing sand and debris, which is able to successively and simultaneously remove sand and debris included in treatment water introduced into the sand, land or waterway by a driving means. More specifically, in order to allow the elevation/lowering of a front screen arranged in front of a lower side of a main screen in turn by a rake and a bucket transported, each side frame of the screen comprises: a plurality of horizontal frames, a vertical frame, and an apron. The pair of chains are rotated by a caterpillar method corresponding to each side frame. The pair of chains have a rake and a bucket installed in turn. A front screen is arranged on a lower side in front of the main screen. The front screen is arranged between rotation plates rotatably arranged on both sides. By a weight arranged on an upper side of each rotation plate, the rake and the bucket are successively transported while being located on the main screen side. In the process, the front screen is elevatably arranged by each roller rotatably placed on both sides of the rake and the bucket. Therefore, by a simple structure, the efficiency in removing the debris and sand can be maximized. In addition, interference with the front screen in accordance with the transport of the rake and bucket can be prevented, thereby increasing the removal efficiency.

Description

Screens for removing sand and debris {Screens for removing sand and debris}

The present invention relates to a screen for removing sediment and impurities, and more particularly, to remove sediment as well as impurities included in treated water flowing into a settling pond or waterway by a single driving means so that sediment as well as impurities can be sequentially and simultaneously removed. In addition, in particular, it relates to a screen for removing sediment and impurities, in which the potential screen provided at the lower front of the main screen can be alternately moved up and down by a rake and a bucket that are transported.

In general, a grit chamber is a facility that is installed at a sewage and wastewater treatment plant to collect, wash, store and treat sand that has settled into waterways. An impurity removal device is also provided and operated.

In the conventional grit pond, in order to treat the sand and impurities flowing into the channel of the grit chamber as described above, a tidal damper for removing relatively large-sized impurities at the inlet into which sewage and wastewater flow, a sand eliminator for removing sand, and a relatively small A device such as a fine dust collector to remove impurities is installed, and incoming impurities and sand are collected and treated.

As described above, the conventional prior art for removing sediment as well as impurities by being installed in the waterway of the grit chamber is as follows.

First, as disclosed in Korean Utility Model Publication No. 20-0260031, Korean Patent Registration No. 10-1199266, and Korean Patent Registration No. 10-1899721 (hereinafter referred to as 'Patent Documents 1'), A technology has been proposed in which an impurity removal device for removing impurities and a sediment removal device for removing settled sediment are respectively installed in the channel of the grit chamber.

In addition, as disclosed in Korean Patent Publication No. 10-2012-0000823 and Korean Patent Registration No. 10-1703883 (hereinafter referred to as 'Patent Documents 2'), the rotation in an infinite orbit on an inclined vertical line A technology has also been proposed in which impurities caught on a screen on a chain are removed by a rake and a grit bucket is provided between the rake to simultaneously remove the impurities and the grit.

However, in Patent Documents 1, a sand removal device that collects, collects, and then discharges sand settled in a settling basin or waterway, as well as a damper for removing impurities, are separately provided, requiring excessive investment in facilities as well as installation due to a complicated structure. It has the disadvantage of being quite cumbersome and inconvenient as well as requiring excessive cost economically.

In Patent Documents 2, the removal efficiency of sediment is significantly reduced due to the disadvantage that the processing range for removing sediment on a settling pond or waterway is limited to an extremely short length.

Korean Utility Model Registration No. 20-0260031 Republic of Korea Patent Registration No. 10-1199266 Republic of Korea Patent Registration No. 10-1899721 Republic of Korea Patent Publication No. 10-2012-0000823 Republic of Korea Patent Registration No. 10-1703883

The specific technical solution of the present invention to solve the above-mentioned conventional problems is to remove sediment as well as impurities included in the treated water flowing into the waterway of the grit chamber by one driving means and sediment, as well as impurities, can be sequentially and simultaneously removed. In addition, it is to provide a screen for removing sand and impurities, in which the potential screen provided at the lower front of the main screen can be alternately moved up and down by the rake and the bucket that are transported.

Another specific technical problem of the present invention is to enable the collected sediment and impurities to be taken out separately.

Another specific technical problem of the present invention is to prevent breakage or damage of the potential screen even during reverse rotation of the rake and the bucket while maximizing the sand collection efficiency.

A specific technical solution of the present invention for solving the above specific technical problems is a rake equipped with a pair of chains rotated in an endless orbit by one drive source on each side frame installed on both sides of the grit pit or waterway and a screen for removing sediment and impurities by buckets, wherein each of the side frames includes a plurality of horizontal frames installed on both side walls to collect sediment settled in the sediment pond or waterway by buckets, and the plurality of horizontal frames. It includes a vertical frame provided so that the main screen is installed on the side where the end treatment water flows in, and an apron installed inclined toward the horizontal frame on top of the vertical frame; The pair of chains are rotated in a crawler manner in a form corresponding to the plurality of horizontal frames, vertical frames and aprons, which are the respective side frames, and the rake and bucket are alternated between each other in the pair of chains installed; A potential screen is provided at the front lower portion of the main screen, the potential screen is provided between each rotation plate rotatably provided on both sides, and a weight provided at the upper portion of each rotation plate in the direction in which the treated water flows. In the process of sequentially transporting the rake and bucket provided on the pair of chains in the state located on the main screen side by the step, each roller provided rotatably on both sides of the rake and bucket is provided to be able to move up and down. include

An upper portion of the lower surface of the apron is provided with a sediment discharge chute in which the sediment collected by the bucket is dropped and guided, and an apron on the lower side of the sediment discharge chute is provided with an impurity discharge chute in which impurities collected by the rake are dropped and guided include that

Each roller provided in the rake is rotatably mounted on auxiliary pieces provided on both sides of the plate of the rake, and each roller provided in the bucket is rotatably mounted on both sides of the bucket.

Each of the rotation plates includes one provided on a rotation shaft mounted on a bearing housing provided on both sides of the lower portion of the vertical frame.

One side of each rotation plate contacting each of the rollers is formed in the shape of an isosceles triangle, and vertices facing each other are formed in a curved surface.

The present invention enables sequential and simultaneous removal of impurities as well as sediment that is included in the treated water flowing into the channel of the grit chamber by one driving means, and in particular, a potential screen provided at the lower front of the main screen. By allowing the lift to be alternately raised and lowered by the rake and bucket that are transported, the effect of maximizing the removal efficiency of sediment and impurities with a minimal and simple structure and preventing indirection with the potential screen due to the transfer of the rake or bucket It also has the effect of having a more efficient removal efficiency.

In addition, by enabling the collected sediment and impurities to be taken out separately, the post-processing work can be performed more smoothly and efficiently.

In addition, by maximizing the sand collection efficiency and preventing the potential screen from being damaged or damaged even during reverse rotation of the rake and bucket, it has the effect of ensuring high reliability and long service life.

1 is a projection perspective view for explaining the present invention;
Figure 2 is a side sectional view according to Figure 1;
3 is a plan view according to FIG. 1;
4 is a partially enlarged side cross-sectional view for explaining the potential screen of the present invention;
5 is a flowchart for explaining an operating state according to FIG. 4 .

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, and the present invention is not limited or limited by the embodiments.

1 is a perspective perspective view for explaining the present invention, Figure 2 is a side sectional view according to FIG. 1, Figure 3 is a plan view according to FIG. 1, Figure 4 is a potential screen for explaining the present invention It is a partially enlarged cross-sectional view, and FIG. 5 is a flow chart for explaining an operating state according to FIG. 4 .

As shown in the figure, the grit sink is a facility that is installed in a wastewater treatment plant to collect, wash, store and treat sand that has settled into the waterway, as described in the background technology of the invention, and not only sand but also various impurities Since it flows in, the grit chamber is equipped with an impurity removal device to remove impurities in addition to the grit remover and is operated.

As described above, the biggest problem in the conventional facilities for simultaneously treating sediment as well as impurities is that the sediment removal device for collecting, collecting, and then discharging the sediment settled in the settling basin or waterway, as well as the dust collector for removing impurities, are installed. By having to be provided separately, the installation due to the complex structure as well as the excessive facility investment cost is also quite cumbersome and inconvenient, as well as economically excessive cost.

In addition, due to the disadvantage that the treatment range for removing sand on the settling pond or waterway is limited to an extremely short length, the removal efficiency of sand is considerably lowered.

The present invention enables sequential and simultaneous removal of impurities as well as sediment that is included in the treated water flowing into the channel of the grit chamber by one driving means, and in particular, a potential screen provided at the lower front of the main screen. It is an object of the present invention to provide a screen for removing sediment and contaminants so that it can be alternately raised and lowered by a rake and a bucket that are transported.

The screen 1 for sequentially and simultaneously removing sediment and impurities according to the present invention is operated in a crawler manner by one driving source 12 on each side frame 10 installed on both sides of the grit chamber or waterway 100. It is processed by a rake 22 and a bucket 24 provided on a pair of rotating chains 20.

In the present application, an example in which the screen 1 is installed in the water channel 100 will be described.

The specific technical configuration of the present invention is as follows.

Each side frame 10 is rotated 180 ° to the right of the letter Nieun ("b") of the Korean consonant, and is installed on both side walls to collect the sediment settled in the sediment or waterway by the bucket 24 A plurality of horizontal frames (10A), a vertical frame (10B) provided so that the main screen 14 is installed on the side where the treatment water flows into the end of the plurality of horizontal frames (10A), and the upper portion of the vertical frame (10B) It has a technical configuration including an apron 10C installed inclined toward the horizontal frame 10A.

The horizontal frame 10A is installed to have a relatively long length, approximately several meters to several tens of meters, in the waterway, along with each support frame for installing the driven sprocket and the idle sprocket interlocked by the driving means, and the upper side Each support frame supporting the underside of the chain is included.

Accordingly, it is possible to have a condition capable of more efficiently collecting the sediment deposited on the bottom surface of the waterway by each bucket provided in the pair of chains.

The vertical frame 10B is installed with a main screen 14 so that impurities contained in the incoming treated water are caught, and the main screen 14 may be installed with a small screen or a small screen depending on site conditions. The screen bar of the main screen may be formed in a bar shape, a wedge bar shape, or a rectangular cross section.

The apron 10C is inclined so as to smoothly discharge sand or impurities collected by the bucket 24 or the rake 22 . The apron 10C is located outside the upper side of the waterway 100.

In addition, on the upper part of the lower surface of the apron 10C, a sediment carrying chute 15 is provided to drop and guide the collected sediment by the bucket 24 so that the collected sediment or impurities can be carried out individually without mixing. It is preferable that the apron 10C on the lower side of the sediment discharge chute 15 is provided with an impurities discharge chute 16 through which impurities collected by the rake 22 are dropped and guided. Each transport conveyor (not shown) for transporting each of the sand and impurities to be carried out is provided at the lower part of the sediment carrying chute and the impurities carrying out chute.

In addition, the apron 10C preferably includes a tension adjusting member 25 having a conventional structure for adjusting the tension of a pair of chains 20 rotated in a crawler manner.

On the other hand, the pair of chains 20 are driven by a pair of drive sprockets rotated by one driving means 12 including a motor and a reducer, a pair of driven sprockets and a pair of idle sprockets to run on an endless track. It is rotated in an endless orbital manner in a form corresponding to the plurality of horizontal frames 10A, vertical frames 10B, and apron 10C, which are each of the side frames 10, and the pair of chains (20) has a technical configuration in which a rake 22 for collecting impurities and a bucket 24 for collecting sand are alternately installed between each other.

In the above, the buckets provided in the pair of chains can maximize the efficiency of collecting the sediment by collecting the sediment settled on the bottom surface of the waterway in the horizontal frame having a relatively long length, which in turn maximizes the removal efficiency of the sediment. have conditions to do so.

In this way, by the buckets and rakes provided between each other in a pair of chains, i.e., the sediment deposited on the bottom surface of the waterway is sequentially collected and transported by the buckets, and at the same time, the impurities caught on the main screen are also transferred by the rakes. After sequentially and simultaneously, the removal efficiency can be maximized by sequentially and simultaneously removing the sediment as well as the impurities by carrying them out through the sediment discharge chute and impurities discharge chute provided on the bottom of the apron.

In addition, a potential screen 30 is provided at the front lower portion of the main screen 14, and the potential screen 30 is provided between each rotation plate 32 rotatably provided on both sides, and each rotation A rake 22 and a bucket 24 provided on the pair of chains 20 in a state in which the plate 32 is positioned toward the main screen 14 by the weight 34 provided on the top of the plate 32 in the direction in which the treated water flows in ) has a technical configuration in which each of the rollers 22A and 24A rotatably provided on both sides of the rake 22 and the bucket 24 is movably provided in the process of being sequentially transferred. Each of the rotating plates 32 is provided to be able to move up and down on a guide groove 42 formed at a position corresponding to each of the rotating plates 32 in the guide plate 40 installed on the bottom surface of the waterway.

In the above, each roller 22A provided on the rake 22 is rotatably mounted on the auxiliary piece 22-2 provided on both sides of the plate 22-1 of the rake 22, and the bucket ( Each of the rollers 24A provided in 24) is preferably rotatably mounted on both sides of the bucket 24.

In addition, each of the rotating plates 32 is preferably provided on a rotating shaft 33 mounted on a bearing housing provided on both sides of the lower portion of the vertical frame 10B.

In particular, one side of each of the rotation plates 32 in contact with each of the rollers 22A and 24A is formed in the shape of an isosceles triangle, and the vertex facing each other is each of the rollers 22A and 24A It is preferable to be formed as a curved surface (32A) so that it can ride smoothly. Forming one side in contact with each roller in the form of an isosceles triangle is such that when each roller is in contact and positioned on a curved surface, the rotating plate is lowered while being pressed, and when the roller is positioned on the lower and upper sides of the curved surface The weight lifts it up again.

Here, even when a pair of chains are reversely rotated to inspect the screen instead of in the direction in which it is transported to remove sediment or impurities, the potential screen is not damaged or deformed due to the structural characteristics of the rotating plate and can be safely There are also side conditions that can be used.

In other words, the potential screen is provided at the front lower part of the main screen to prevent impurities or foreign substances from passing while preventing being caught between the main screen and the bottom surface of the waterway. The potential screen of the present invention is a process in which buckets and rake are transferred It has a technical configuration that can be smoothly moved up and down by a simple technical configuration without interfering with or interfering with it.

Therefore, the present invention can establish conditions for maximizing the removal efficiency of sediment and impurities by efficiently collecting and transporting sediment and impurities sequentially and simultaneously by transporting the bucket and the rake using one driving means.

In addition, as sand and impurities are individually taken out by a simple structure, the treatment efficiency can be further increased.

In addition, the potential screen is also raised so as not to interfere with the bucket or rake due to structural features in the process of transporting the bucket or rake, thereby further increasing the efficiency of removing sediment and impurities.

In particular, by preventing the damage or deformation of the potential screen even when rotating in the opposite direction of being transported to remove sand and impurities, it also has a condition for securing high reliability and long service life.

1: screen
10: side frame 10A: horizontal frame
10B: vertical frame 10C: apron
12: driving means 14: main screen
15: sediment discharge chute 16: impurities discharge chute
20: chain 22: rake
22-1: Plate 22-2: Auxiliary piece
22A, 24A: roller 24: bucket
25: tension adjusting member 30: potential screen
32: rotating plate 32A: curved surface
33: axis of rotation 34: weight
40: guide plate 42: guide groove
100: waterway

Claims (5)

In the screen for removing sediment and impurities by a rake and a bucket provided with a pair of chains rotated in an endless orbit by one driving source on each side frame installed on both sides of the settling pond or waterway,
Each of the side frames is the lower surface of the chain on the upper side together with each support frame for installing a driven sprocket and an idle sprocket interlocked by a driving means on both side walls to collect the sediment settled in the sediment pond or the waterway by the bucket. A plurality of horizontal frames installed, each including a support frame for supporting and supporting, a vertical frame provided so that the main screen is installed on the side where the treatment water flows into the end of the plurality of horizontal frames, and an upper part of the vertical frame toward the horizontal frame side Includes an apron installed inclined;
The pair of chains are rotated in a crawler manner in a form corresponding to the plurality of horizontal frames, vertical frames and aprons, which are the respective side frames, and the rake and bucket are alternately rotated between each other in the pair of chains installed;
A potential screen is provided at the front lower portion of the main screen, the potential screen is provided between each rotation plate rotatably provided on both sides, and a weight provided at the upper portion of each rotation plate in the direction in which the treated water flows. Is provided to be able to move up and down by rollers rotatably provided on both sides of the rake and bucket in the process of sequentially transporting the rake and bucket provided on the pair of chains in a state located toward the main screen by;
Each of the rotation plates is provided on a rotation shaft mounted on a bearing housing provided on both sides of the lower portion of the vertical frame,
One side of each rotation plate in contact with each roller is formed in the shape of an isosceles triangle, and the apex point facing each other is formed as a curved surface so that each roller can ride smoothly. dragon screen. According to claim 1,
An upper portion of the lower surface of the apron is provided with a sediment discharge chute in which the sediment collected by the bucket is dropped and guided, and an apron on the lower side of the sediment discharge chute is provided with an impurity discharge chute in which impurities collected by the rake are dropped and guided A screen for removing sediment and contaminants comprising a. According to claim 1,
Each roller provided in the rake is rotatably mounted on an auxiliary piece provided on both sides of the plate of the rake, and each roller provided in the bucket is rotatably mounted on both sides of the bucket. and a screen for removing contaminants. delete delete

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