KR101978601B1 - Debris removal apparatus for combination type bar screen - Google Patents

Abstract

The present invention relates to an impurity removal apparatus for a combinational bar screen which filters out large and small impurities mixed in sewage and waste water to enter by a screen to prevent the impurities from entering rear equipment, and scrapes and lifts the impurities by a rake with a rake hoisted by a wire rope to discharge the impurities to an impurity discharging transport conveyor. A rake plate (34) is folded by two rollover ropes (22) to be inserted between screen bars, and a rake device (30) is hoisted by two hoisting ropes (21). The rake plate (34) is attached to the rake device (30) by a rake hinge (32), and is rotated, hoisted, and returned by an upper, a lower, a left, and a right running roller (31). Large impurities caught between coarse bars (41) are removed by the rake plate (34) with an integrated plate. Small impurities caught between fine bars (42) are removed by fine teeth (36) assembled on a back side of the rake plate (34) to be finely adjusted.

Description

Technical Field [0001] The present invention relates to a damper removing apparatus for a combination bar screen,

In the present invention, a combination bar screen is installed at the front end of a tiller of a tiller which can mix large and small dirt mixed with wastewater and introduced into a tiller, and the dirt trapped in each screen bar is inserted into the tiller The present invention can increase the efficiency of the entire treatment plant by replacing the conventional small-sized obstacle with a facility for filtering and removing fine contaminants at the downstream end of the clearinghouse.

Generally, household garbage and wastes are mixed with sewage through a sewage line in a wastewater treatment plant. In order to remove large contaminants from the front of the wastewater treatment plant, a line bar screen (usually a neck spacing of 75 mm) After sedimentation, a limb bar screen (usually 25 mm) is installed to remove relatively small contaminants from the back of the clearing.

Each bar screen is equipped with a bar screen up and down in the water channel at right angles to the water flow direction to remove the filtered impurities using a movable hydraulic damper or a rake assembled in an endless track chain.

The bar screen is assembled at regular intervals of the same size to filter coarse scum. It is installed by rakes frequently between the neck intervals, and the operation is interrupted. Also, coarse scum passes vertically, There is a cause that causes it, or a leak that flows into the downstream equipment. In addition, although a hydraulic damper for removing large obstacles installed at the front end of the water channel is often used, the rake (rake) often gets caught in the bar screen because the cylinder arm is pulled out to remove the contaminants.

Fig. 1 is a front view and a side view of a generally used hydraulic damper and sequentially removes contaminants caught in the bar screen f while the casing (c) follows the guide rail (b) formed on the frame a .

The boom (e) connected to the hydraulic cylinder (d) is moved down to the bottom of the bar screen (f) and the impurities are introduced into the water channel Up to the discharge conveyor (not shown).

Such operation is difficult to precisely insert the bar screen f and the rake g so that the rake g is reduced and the work is repeated several times.

FIG. 2 is a screen f shown in FIG. 1; In the front view, the bar screen f is assembled with spacers i and rods j between equally spaced flats h to filter coarse contaminants so that the neck spacing (typically 75 mm) is uniform.

The bar screen f is fixed to the support k fixed to the left and right walls of the water channel at right angles to the water flow, but occlusion of the contaminants frequently occurs between the flat h and n, It drifts in the water stream and flows into the downstream equipment.

In addition, the small damper for small obstacles installed at the end of the gravel is also long in operation length (usually 8m or more), and there is a limit in narrowing the gap of the screen bars by rake being caught between the bar screens.

Patent Literature 1 discloses a structure in which both a coarse bar screen and a coarse bar screen are formed in a double structure and the coarse particles trapped on each screen are simultaneously removed by attaching coarse rake blades and coarse rake blades to the same lifting chain, It is necessary to further refine the method of discharging contaminants from the rake day.

In addition, there is a limit in reducing the interval of the screen bar for the tree bending because the running length from the bottom to the drive shaft is long due to the lifting chain.

In the composite type vibration damper of Patent Document 2, a separate hydraulic cylinder is used to remove the contaminants caught on the single-type screen by lifting and lowering the pro-rake with the wire according to the forward and reverse rotation of the wire rope drum while removing the rake from the screen . Since the wire rope is wound in one line, the rake of the rake occurs during the operation and the screen bar is interfered with. Therefore, there is a limit in narrowing the arrangement interval of the screen bar and the rake can not be made long.

The coarse contaminant removal device of Patent Document 3 removes the contaminants by a floor screen which fixes the fixed screen at right angles to the water channel and uses a wire drum on the upper part of the frame to raise and lower the pros by a wire. In the structure for removing the contaminants caught on the fixed screen while lifting up, the contaminants desorbed from the fixed screen upon the descent of the bottom screen are accumulated on the back of the bottom screen, and a separate means for removing it is needed.

Patent Document 4 is a means for removing obstacles on a screen bar. As a means for removing the obstacles on the screen bar, a rake is run up and down on a wire wound and unwound by a winch. It is not possible to simultaneously remove a large contaminant and a small contaminant with a single structure. Further, since the wire is pulled at one place, there is a fear that the rake may be shaken to the left and right during operation, and the contaminants remaining on the screen bar may fall down to the bottom of the water channel.

The wiper drive device of the compound damper of Patent Document 5 is a structure that sweeps up the clogging on the screen while the slide bar is operated up and down with hydraulic pressure and sweeps off the rubbish accumulated on the rake with a wiper attached to the end of the hydraulic cylinder.

Korean Registered Patent No. 10-1003717 (Registered on December 17, 2010) Korean Registered Utility Model No. 20-0155485 (registered on June 2, 1999) Korean Registered Utility Model No. 20-0184703 (registered on March 24, 2000) Korean Registered Utility Model No. 20-0307452 (registered on March 4, 2003) Korean Registered Utility Model No. 20-0168471 (Registered November 10, 1999)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a bar screen for simultaneously filtering large and small contaminants at a front end of a tiller of a tiller and a facility for removing fine contaminants at the rear end So that the downstream equipment can be protected and the quality of the treated water can be improved.

The sewage plant in the sewage treatment plant is usually 3m in width and 5m in height or more. At the front end of the waterway, the whole width of the waterway is uniformly spaced, A combination bar screen is installed to filter out small contaminants.

This combination bar screen is equipped with a rake on the wire rope to remove it while running between the screen bars, and to remove the rake from the screen bars, Two points are towed at four points in total.

In addition, if rollers are attached to four places on the rake device, and rollers are mounted on four straight lines, the wire rope can be lifted up to the four rows, and the rake can be operated silently without interfering with the screen bars .

In addition, it is possible to further improve the processing efficiency by making fine and precise fine adjustment of the cutting teeth inserted (rolled) between the block and the bar.

The precisely machined spacer is inserted between the joist bar and the limb bar constituting the combined bar screen according to the present invention. The spacer is assembled with a round bar, the both ends are bolted, the nut is fastened and then the slab is installed at a right angle from the water channel do.

The rake plate is made of sheet metal to remove large contaminants between the joists, and the joining teeth, which remove small contaminants between each of the screen bars, are attached to the rake plate so that they can be finely adjusted. Can be prevented.

In the wire drum which is driven by the motor reducer, two rope grooves for inserting (lowering) rake on the left and right and two rope grooves for lifting can be wound and loosened.

In order to operate the rake device in straight line, it can be lifted at two pros and cons.

In addition, a driving roller is attached to the upper, lower, left, and right sides of the rake device so that the rake plate can be closely contacted with the screen bar while driving.

In addition, it is a safety device that stops the equipment by detecting wire rope disconnection or breakage immediately, and alarms to confirm.

The present invention is characterized in that unlike the conventional art, the large and small sized contaminants mixed in wastewater and sewage are simultaneously filtered at the front end of the tiller so that the rake runs without interfering with the screen bar, and the processing efficiency is very high. And a space for installing a fine contaminant removal facility at the rear end can be provided.

1 is a front view and a plan view of a conventional hydraulic damper.
2 is a front view of a conventional bar screen.
3 is a top view of a combined bar screen of an embodiment of the present invention.
4 is a front view of the combined bar screen shown in Fig.
Figure 5 is a side view of the combined bar screen shown in Figure 3;
6 is a top view of a combined bar screen rake arrangement of an embodiment of the present invention.
Figure 7 is a side view of the combined bar screen rake arrangement shown in Figure 6;
8 is a detailed configuration diagram of the rake plate and the parts shown in Fig.
9 is a front view of the rope judgment detecting apparatus of the embodiment of the present invention.
Fig. 10 is a side view of Fig. 9 showing the operation of the rope breakage detecting device.
Figure 11 is an assembly view of a combined bar screen of an embodiment of the present invention.

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

FIGS. 3 to 5 are a plan view, a front view, and a side view, respectively, showing an overall configuration of a contaminant damper for a combined bar screen according to an embodiment of the present invention.

As shown in the drawing, the motor speed reducer 11 is configured to rotate forward and reverse, and the output side of the motor speed reducer 11 is connected to the shaft 12 by a coupling 16 to transmit rotational force. The wire drum 13 is fixed to the shaft 12 by a key (not shown) and both ends of the shaft 12 are supported by the bearing 14.

The wire drum 13 is provided with a rope groove 15 for winding up the overturning rope 22 which raises and lowers the rake plate 34 is machined to the inner left side and the rope groove 15 for the lifting rope 21 to be lifted, Respectively.

As described above, since the lifting rope 21 and the overturning rope 22 lift each of the two rows by four lines, the lifting operation of the rake device 30 is extremely quiet.

The traveling rollers 31 attached to the upper, lower, left, and right four places of the rake device 30 are allowed to travel while rotating on the left and right coarse bars 41, And travels to the guide rail 63. When the rake plate 34 reaches the chute 62, the impurities are delivered to the discharge conveyor 65 through the chute 62 to be transported to the outside.

This is solved simply by lifting and lifting the lifting bar 28 connected to the electric cylinder 24 by lifting the rake plate 34 and inserting (overturning) between the respective bars and lowering it when returning.

A limit switch or the like is provided on the guide rail 63 to detect the position where the rake plate 34 is lifted and the position where the rake device 30 stops at the upper portion. (17) which precisely converts the rotational speed of the motor (13) to the rotational speed of the motor (13).

Figs. 6 and 7 are a front view and a side view, respectively, of assembling the rake device 30 for removing the obstacles filtered on the combined bar screen and the parts attached thereto.

The upper and lower portions of the rake device 30 are connected to each other by the link 38, as shown in Fig. 6, at two inner sides (at the center) of the rake device 30 and at two right and left portions of the rake plate 34 respectively.

The link 38 and the rollover hinge 33 of the rake device 30 are connected to the connecting rod 26 so as to freely repeat insertion and return of the rake plate 34 in accordance with the operation of the overturning rope 22. [ Connect.

When the overturning rope 22 is wound, it is transmitted to a pair of left and right links 38 so that the rake plate 34 is rotated 90 degrees from the rake hinge 32 to be inserted (rolled) between the screen bars and each abutment hinge 33 And the lifting rope 21 coupled to the lifting hook 23 located on the outer side of the lifting rope 23 lifts up the scrap hanging on the combination screen 40.

In order to prevent twisting of the lifting ropes 21 and the overturning ropes 22, it is very efficient to insert a turnbuckle device for inserting a freely rotating swivel joint 29 and finely adjusting the degree of tension.

6 and 7, the traveling rollers 31 are assembled at four positions on the upper, lower, left, and right sides of the rake device 30 and travel on the outermost coarse bar 41 of the combination screen 40 The center portion of the traveling roller 31 is formed in a tapered shape to the both ends of the rail. When the tapered portion is formed at both ends of the rail 31, It is possible to move very stably while maintaining a constant orbit, so that the detailed teeth 36 can be deeply inserted between the screen bars, thereby improving the processing efficiency.

FIG. 8 shows a state in which a plurality of rake plates 34 are attached to the rake hinge 32 so as to integrate the rake plate 34 and remove the contaminants trapped between the lumber bars 41.

The trimming teeth 36 for removing the contaminants sandwiched between the leg bars 42 assembled between the lumber bars 41 are formed by lapping the wedge grooves 39 into two lines and forming a wedge way (35). By doing so, it is possible to precisely fine-adjust the toothed teeth 36 after assembling between the respective screen bars.

When the teeth 36 are precision-machined into two rows in the form of a wedge, they do not interfere with the vibration of the rake device 30.

The corner of the trimming teeth 36 and the tooth edge of the rake plate 34 can be smoothly operated by round processing.

9 and 10 are a front view and a side view of the rope breakage detecting device 50. The lifting rope 21 lifts and returns the rake device 30 by forward and reverse rotation of the wire drum 13, So as to be wound around the wire drum 13 via the rope sheave 27 and loosened so that the roller 51 is held in the middle portion thereof.

10, when the rotary lever 52 for assembling the roller 51 is assembled to the pin 55 rotating on the vertical support 56, the lifting rope 21 is broken or the rope sheave 27 , It is separated from the limit switch 53 provided on the support pedestal 54 so that the power is cut off and an alarm is sounded at the same time.

That is, when the lifting rope 21 breaks or is disengaged, the rotation lever 52, which operates while supporting the roller 51 which has been in contact with the lifting rope 21, rotates, The power is cut off and an alarm sounds.

11 illustrates the assembly of the combined bar screen 40. The hollow spacer 43 is precisely machined so as to arrange the split bars 42 at regular intervals between the coarse bars 41, do.

It is possible to assemble each screen bar by using a round bar approximately the same as the inner diameter of the hollow spacer 43 and to make the round bar bolt 44 by screwing both ends of the round bar and then tightening the nut, A plurality of reinforcing bars 46 are fixed to both side walls of the structure and assembled on the back side of the combined bar screen so that they can be sufficiently supported when the water pressure is severely adhered to the surface of the combined bar bases 40. [

The block bar 41 uses a flat bar having a width larger than that of the bar bar 42 to cut a large obstacle and a small obstacle that has passed between the bar bars 41 is filtered by the bar bar 42.

10 frames
11: Motor reducer
12: Shaft
13: Wire Drum
14: Bearing number
15: Rope groove
16: Coupling
17: Encoder
21: Lifting rope
22: Abalone rope
23: Lifting ring
24: Electric cylinder
26: Connecting rod
27: rope sheave
28; Lifting bar
29: Swivel joint
30: rake device
31: Driving roller
32: rake hinge
33: abalone hinge
34: Rake plate
35: Wedge Way
36: Toothed teeth
37: Link hinge
38: Link
39: Wedge groove
40: Combination Bar Screen
41: Coarse bar
42: Subdivision bar
43: Spacer
44: Round bar bolt
45: Index plate
46: Reinforcing bar
50: rope breaking detection device
51: Roller
52: Rotary lever
53: Limit switch
54: Support
55: pin
56: vertical support
61: frame
62: Suit
63: Guide rail
64: upper casing
65: Discharge conveyor

Claims (6)

A bar screen damper for eliminating large and small pieces of dirt trapped on a combined bar screen 40 made of flat bars of the same standard and consisting of a limb bar 42 arranged at equal intervals therebetween;
The rake plate 34 is folded with two rows of rolled up ropes 22 and inserted between each of the screen bars while simultaneously lifting the rake device 30 with two rows of lifting ropes 21, And is lifted and returned while being rotated by the four traveling rollers 31 on the upper, lower, left, and right sides, and the large contaminant removal sandwiched between the lumbering bars 41 is carried out by the rake hinge 32, The small scoops sandwiched between the slab bars 42 are assembled to the back surface of the scoop plate 34 and are removed by the fine sloped teeth 36 which can be finely adjusted, Two or more wedge wafers 35 are attached to the back surface of the rake plate 34 for removing large contaminants sandwiched between the wedge grooves 41 and the wedge grooves 39 are formed in each of the wedge teeth 36, It can be finely adjusted even if inserted, so that it does not interfere with the side of the screen bar. Combined bar for adulteration jejingi screen.
delete The method according to claim 1,
The traveling rollers 31, which rotate at four positions above, below, left, and right of the rake device 30, have a central portion that is wider than the rails and tapered to both ends, So as to allow the rake device (30) to run in a straight line so that the trimming teeth (36) do not interfere between the screen bars.
The method according to claim 1,
When the rake device 30 starts lifting, the rake plate 34 is lifted by the overturning rope 22 by pushing the electric cylinder 24 to raise the lifting bar 28 and inserted between the screen bars and the upper guide rail 63), the electric cylinder 24 is pulled to lower the lifting bar 28 and lower the rake plate 34 to discharge the contaminants to the chute 62 and load the chute on the discharge conveyor 65. [ Barrier screen damper for bar screen.
The method according to claim 1,
The overturning rope 22 and the lifting rope 21 form a rope groove 15 for the overturning rope on the left and right sides of the center of one of the wire drums 13, And an encoder 17 is provided at one end of the shaft 12 of the wire drum 13 to convert the travel distance of the rake device 30 into the number of revolutions of the wire drum 13. [ So as to be able to detect a stopping point in the water.
The method of claim 5,
When the lifting rope 21 breaks or is disengaged, the rotation lever 52, which is operated while supporting the roller 51 which has been in contact with the lifting rope 21, is rotated to operate the limit switch 53, Further comprising a rope rupture detecting device (50) for preventing an accident by interrupting the supply and for making an alarm.

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