JP2002504637A - Isolated grid - Google Patents

Abstract

In a separating grid (1) for collection and removal of solid particles and objects (4) present in running water (2) and equipped with a separating unit (8) comprising alternate fixed and mobile grid bars (9 and 10, respectively), wherein the mobile grid bars (10) are connected at their upper parts (18) to a drive unit (16) to draw the solid particles and objects (4) step by step out of the water (2) and carry them along the fixed grid bars (9), up to an outlet (17), the mobile grid bars (10) are suspended in the area of their lower parts (19) from a cradle (21) disposed at the lower part (20) of the separating grid (1). Said cradle (21) comprises suspension units (25) on both sides of the separating unit (8), and each suspension unit (25) may comprise an upper rocker arm (27) the lower end (28) of which is articulated to the lower end (29) of the separating grid (1), and also two rocker links (31 , 32) articulated at their upper ends to the rocker arm (27) at a point intermediate the upper and lower ends (28, 34) of said arm and the lower ends (35) to the mobile grid bars (10).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

【Technical field】

The present invention is a separation grid for collecting and removing solid particles and objects present in flowing water, the grid comprising a separation unit disposed at a position inclined obliquely upward and backward in the flow direction of water. With alternately fixed and movable grid bars, at the edges of which are formed collecting and removing means curved in the direction of flow of water, said movable grid bars being located in the area of the upper part thereof. The present invention relates to a separation grid connected to a drive unit and actuated by this unit to step up solid particles and objects from the water and to lift it up along a fixed grid bar to an outlet.

[0002]

[Prior art]

Separation grids of this type are known from Swedish Patent 470102. In this prior art structure, the lower edge of the movable grid bar is configured to be guided in the separation grid and moved substantially back and forth by the drive unit. More specifically, the movable grid bar is supported on a cross piece that is mounted for controlled movement at the bottom of the grid. The crosspiece extends transversely to the separating unit and has on its short side a downwardly directed guiding profile member, each of which is formed with a longitudinal groove. Each groove receives a grid mounted guide rail cooperating with a respective guide profile in a controlled sliding motion.

A structure for mounting the cross-piece and thus the movable grid bar in a controlled sliding movement, ie a structure for relatively large back-and-forth movement of said components, and an environment located at the lowermost edge of the separation unit That is, due to the location environment containing a large amount of solid particles and objects, including hard objects such as stones and sand, the sliding support means is subject to considerable wear and increases maintenance and repair costs. Furthermore, in the case of relatively high-speed flowing water, for example, a rigid object may become trapped in some way between the guide rail and the groove or other movable part of the sliding support means, which may damage the means and / or The movable grid bar is closed. Eventually, serious problems such as blockage of solid particles and objects, loss of production, etc. will occur, leading to failure of the entire separation grid.

[0004]

SUMMARY OF THE INVENTION

The basic main object of the present invention is to overcome the above disadvantages and disadvantages with regard to wear and damage to the sliding support means of the lowermost edge of the separation unit.

[0005] This object is achieved according to the invention, ie the movable grid bar is suspended from a cradle located in the lower part of the separation grid in the area of its lower part, said cradle being suspended on both sides of the separation unit. Achieved by having a unit.

According to a first particularly preferred embodiment, each suspension unit is preferably, on the one hand, a rocker arm, the lower edge of which is articulated to the lower edge of the separation grid. A rocker arm and, on the other hand, two rocker links, the upper edge of which is articulated to the rocker arm at a point between the upper and lower edges of this arm and the opposite edges of which are movable grid bars. And two rocker links articulated with respect to each other.

According to a second particularly preferred embodiment, each suspension unit has a lower end articulated to the lower end of the separation grid and a rod member mounted on the rod member. It can have a tubular member slid longitudinally thereon and a conducting means fixedly mounted between the tubular member and the movable grid bar.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS

 Next, the present invention will be described in more detail with reference to the drawings.

The separation grid, generally designated by the reference 1, is intended to be mounted, for example, on a water purification device. Its purpose is to collect and remove solid particles and objects 4 present in flowing sewage 2 in a channel 3 made of concrete, for example. The particles and objects are moved by conveyor means (not shown) for subsequent processing and / or deposition.

In general, the separating grid 1 is designed in a frame structure, not shown in detail, but composed of frame contour sections. Cover plates such as side plates 5, end wall plates 6 and bottom plate 7 are attached to the contour section, for example via screws and / or spot welding joints or the like. The frame structure, including the frame contour sections and plates, is preferably formed from stainless steel or other material that is resistant to the action of the flowing water 2 and its contents. The side plates 5 form the lateral border walls of the separation grid 1, while the end and bottom plates 6, 7 delimit the upper rear wall and the upper bottom wall, respectively, of the separation grid.

The separation grid 1 supports between its two side plates 5 a separation unit, generally designated by the reference numeral 8, which is inclined obliquely upward and backward as viewed from the flow direction A of the flowing water 2. are doing. The separation unit 8 has a large number of parallel alternately fixed and movable grid bars 9 and 10, respectively. The grid bar is raised and is preferably formed from stainless steel or other material having sufficient resistance to the raising.

Basically, the fixed grid bar 9 is fixedly attached to the separation grid 1 while the movable grid bar 10 is fixed to be movable. This method will be described later in detail. The number of fixed and movable grid bars 9, 10 can be changed corresponding to the desired width of the separation grid 1.

The fixed and movable grid bars 9, 10 are both substantially straight in view of their longitudinal extension, and are collected and removed at the edges of the bars which are curved towards the water flow direction A. Means 11 are formed. These means 11 are provided by the grid bars 9, 1
0, the recesses 12 and the protrusions 13 are formed continuously and alternately over substantially the entire length of the grid bars 9, and the recesses are deeper from the lower edge 14 of the grid bars 9, 10 toward the upper edge 15, The protrusions are higher and sharpened. Therefore, as is apparent from the drawing, the concave portion 12 and the convex portion 13 are shallow and low at the lower edge portion 14, respectively, and their shapes are similar to ripples in this region, but the upper grid bar edge portion 15
, Gradually increasing to have a stepped shape in this region.

When the drive unit, generally indicated by the reference numeral 16 and described in more detail below, is activated, the movable grid bar 10 of the collecting and removing means 11 causes the solid particles and the object 4 to divide the flowing water 2 Through the corresponding collecting and removing means 11 of the fixed grid bar 9 to the discharge means, ie the outlet 17 located at the upper edge of the separation grid upstream of the upper edge 15 of the grid bars 9,10. To achieve the purpose of transporting upward. From this outlet 17 the particles and objects 4 are moved via a conveyor or the like, not shown in detail, for the next processing / step and / or utilization / deposition.

The movable grid bar 10 is connected to the drive unit 16 in the area of its upper part 18 and to the lower part 20 of the separating grid 1 in the area of its lower part 19, in the form of a cradle 21 indicated generally by the reference numeral 21. Suspended by means. More specifically, in the embodiment shown, the movable grid bar 10 is movably mounted on the two upper movable cross beams 22 in the region of its upper part 18. These cross beams 22 extend laterally below the side plates 5 to the separation grid 1 and are connected to the drive unit 16 in a manner described in more detail below. The movable grid bar 10 is also movably mounted on the two lower movable cross beams 23 in the lower region. These cross beams 23 are substantially the same as the upper cross beams 22 and likewise extend laterally below the side plates 5 with respect to the separating grid 1. These lower crossbars 23 are also connected to the drive unit 16 in a manner also described in more detail below.

The fixed grid bar 9 is also movably mounted on a fixed cross beam 24 (four cross beams in this case) separated between both end edges 14 and 15. These cross beams also extend laterally below the side plates 5 with respect to the separation grid 1, but at the same time form part of the frame structure of the separation grid 1.

In the two embodiments shown and described above, the cradle 21 has one suspension unit 25 on each side of the separation unit 8. More specifically,
The two suspension units 25 of the cradle 21 are arranged in a protective position on the outer surface 26 of the side plate 5 directed outwardly from the separation unit.

In the embodiment shown in FIGS. 1 and 2, each suspension unit 25 is
2, i.e., most clearly in FIG. 2, but having a longitudinal rocker arm 27 extending parallel to and vertically spaced from the movable grid bar 10. A pivot 30 is immersed in the flowing water 2 at the lower rocker arm edge 28 to pivotally attach the rocker arm 27 to the lower edge 29 of the separation grid 1 also immersed in the water 2.

Further, in the embodiment shown in FIGS. 1 and 2, each suspension unit 25 has two rocker links 31 and 32. These are substantially parallel, mutually parallel,
In particular, it extends at right angles to the rocker arm 27 and the movable grid bar 10.
The two rocker links 31, 32 are articulated at one edge, or upper edge 33, to the rocker arm 27 at a point between its lower edge 28 and upper edge 34, and the other. At the edge or lower rocker link edge 35, pivots 36 and 37 connect this link to the movable grid bar 10.

The two suspension units 25 of the cradle 21 consisting of the rocker arm 27 and the rocker links 31, 32 and their co-operating pivots 30, 36, 37 are made of a material which is suitable for their intended purpose, preferably of the separation unit 1. Like the rest, it is made of non-rust steel. The pivots 30, 36 and 37 may be formed from suitably structured slide and / or roller bearings and may be permanently lubricated and / or encapsulated to withstand the environmental conditions of the water 2.

More specifically, one of the rocker links 31 and 32, in this case, the rocker link 32
Is pivoted at one of its upper edges 33 to the rocker arm 27 in the region of its substantially upper rocker arm edge 34 and at its lower edge 35
Calculated relative to the movable grid bar 10 from its lower bar edge 14 in the area substantially one-third below the bar. The other rocker link 31 has one upper edge 33 with respect to the rocker arm 27 such that its connection point is located in a substantially intermediate region between the upper and lower edges 28, 34 of said arm. The link 31 has its lower edge 35 opposite to the movable grid bar 10 in the area of its lower bar edge 14.
However, the location of the pivot point interconnecting the rocker arms 27, rocker links 31, 32 and grid bar 10 is, of course, one of several examples and can be varied.

In the embodiment shown, the two suspension units 25 consisting of rocker arms 27 and rocker links 31, 32 are interconnected directly or indirectly via two lower movable crossbars 23 means, Grid bar 10 above
Are mounted in the region of its lower part 19.

In the second preferred embodiment shown in FIG. 3, each suspension unit 25 has three main elements:
That is, it is composed of the rod member 45, the tubular member 46, and the conductive member 47.

The rod member 45 is preferably formed as a cylindrical piston rod, the lower edge 48 of which is immersed in the flowing water 2 pivotally attached to the lower edge 29 of the separation grid 1 by means of a pivot 49. Have been.

The tubular member 46 is formed telescopically, preferably mounted on a piston rod, to accommodate the shape of the rod member 45, so that it can be slid concentrically in any suitable manner and Along the longitudinal direction.

The rod and the tubular members 45, 46 are connected to the rocker arm 27 according to FIGS.
In the same manner as described above, in the longitudinal direction of the separation unit 8 (see FIG. 3), especially the movable grid bar 1
It extends parallel to 0 and spaced above it.

The third main element of the suspension unit 25 in FIG. 3, ie the conducting means 47, is fixedly connected between the tubular member 45 and the movable grid bar 10. More specifically, the conducting means 47 in this case is formed as a substantially upright trapezoid and substantially vertically and diagonally, for example at an angle of 45-60 °, while being formed by rods and tubular members 45,46. On the other hand, the movable grid bar 1
0 is extended. The two opposing parallel sides 50, 51 of the conducting means 47 are preferably fixedly attached to the tubular member 46 and the movable grid bar 10, respectively, by any suitable method such as welding, rivets, bolts or the like. .

It should be understood that the above-described shape and inclination of the conducting means 47 is not the only one possible. Its essential properties are that it is the rod and tubular member 4
It is to act as a moment resistance and rigid transmission element between the movable grid bar 10 and the bearing unit formed at 5, 46.

Also in the embodiment shown in FIG. 3, the elements of the two suspension units 25 of the cradle 21, consisting of rods and tubular members 45, 46 and the conducting means 47, together with their cooperating connection means, are usually in their intended It is formed from a material that is well suited to the intended use, preferably non-rusting steel. Also in this case, the joint 49 can be formed from a slide and / or roller bearing, and the bearing unit consisting of the rod and the tubular members 45, 46 can be configured in a suitable manner, ie as a linear ball bearing or the like. Regardless of the type of bearings, these bearings can be and / or be included in a permanent lubrication type to withstand the harsh environmental conditions of the flowing water 2.

To generate the movement of the movable grid bar 10, the drive unit 16 has an electric drive motor 38 mounted on the upper part of the frame structure of the separation grid 1.
The drive motor 38 is equipped with a gear box 39 having two coaxial bidirectional drive shafts 40. The drive shaft is rotatably mounted in a bearing 41 on the side plate 5 and extends through the plate. Each drive shaft 40 operates one of the two identical eccentric mechanisms 41 outside the side plate 5. Each of the eccentric mechanisms 41 is a substantially triangular conductive means 42 and is coupled to a conductive means 42 made of sheet metal or other suitable material, preferably non-rusting steel or the like. This conducting means 42 is then connected to two upper movable cross beams 22 on which the movable grid bar 10 is mounted in the region of its upper part 18.

Thus, the movable grid bar is activated, and this grid bar operates the two suspension units 25. That is, the required gradual transfer of the solid particles and objects up to the outlet 17 is achieved.

The present invention has been shown and described with respect to two currently preferred embodiments. However, the invention should not be considered limited to these examples,
Many modifications are possible within the scope of the appended claims.

[Brief description of the drawings]

1 is a schematic perspective view of a separating grid according to a presently particularly preferred embodiment, viewed obliquely from the front, said separating grid being arranged in a channel of flowing water, a part of which is removed for clarity; Have been.

FIG. 2 is a side view of the separation grid of FIG.

FIG. 3 is a side projection view corresponding to FIG. 2 of a separation grid according to a presently particularly preferred embodiment.

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE , KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW. (35) can have two rocker links (31, 32) each articulated to the movable grid bar (10).

Claims (10)

[Claims] 1. A separation grid for collecting and removing solid particles and objects (4) present in flowing water (2), said grid comprising a water flow direction (A).
And a separation unit (8) arranged at a position inclined obliquely upward and backward, and having alternately fixed and movable grid bars (9 and 10, respectively), the edges of which are provided with water. A collecting and removing means (11) is formed which is curved in the flow direction (A) of the movable grid bar (10), and the movable grid bar (10) has an upper part (18).
) Is connected to and actuated by a drive unit (16) in the area of) so that solid particles and objects (4) are pulled up stepwise from the water (2) and this is fixed to a fixed grid bar (4). In the separation grid rising upwardly along 9) to the outlet (17), the movable grid bar (10) is arranged in the area of its lower part (19) in the lower part (20) of the separation grid (1). A separation grid suspended from a cradle (21), said cradle having a suspension unit (25) on both sides of the separation unit (8). 2. Each of the suspension units (25) has, on the one hand, a rocker arm (27).
Wherein the lower edge (28) is the lower edge (29) of the separation grid (1).
Arm (27) which is articulated to the other, and two rocker links (31) on the other hand.
32) whose one edge (33) is articulated to the rocker arm (27) at a point between the upper and lower edges (28, 34) of this arm and its opposite end. 2. Separation grid according to claim 1, wherein the edge (35) has two rocker links (31, 32) articulated to the movable grid bar (10). 3. The rocker arm (27) extends substantially parallel and upwardly away from the movable grid bar (10), and the rocker links (31, 32) are substantially mutually parallel and the rocker arm (27). 3. The separating grid according to claim 2, which extends substantially perpendicular to the movable grid bar and to the movable grid bar. 4. One rocker link (32) has one upper edge (33).
) Is pivoted to the rocker arm (27) in a substantial area of its upper rocker arm edge (34) and at its opposing edge (35) the movable grid bar (10).
) Calculated from its lower bar edge (14) and pivoted within substantially the lower third of the bar, and the other rocker link (31) is connected to its one edge (33).
At the upper and lower edges (28, 34) of this arm relative to the rocker arm (27).
) Is pivotally mounted in the substantially intermediate region between the lower grid bar edge (14) and the movable grid bar (10) at its opposing edge (35).
4. A separation grid according to claim 2 or 3 pivotally mounted within a substantial area of the separation grid. 5. Each suspension unit (25) has a lower edge (48) articulated to a lower edge (29) of the separation grid (1), and a rod member (45); (45) A tubular member (4) mounted on and slid longitudinally thereon.
6. Separation grid according to claim 1, comprising 6) and conducting means (47) fixedly mounted between the tubular member (46) and the movable grid bar (10). 6. The rod and the tubular member (45, 46) are connected to a movable grid bar (45).
Extending substantially parallel to 10) and spaced above the bar, the rod member (45) is configured as a piston rod and the tubular member (46) is mounted concentrically on the piston rod. 6. A separation grid according to claim 5, wherein the separation grid is configured as a nest that slides over it. 7. The conducting means (47) is formed in a substantially upright trapezoidal shape and is inclined on the one hand with respect to the rod member and the tubular member (45, 46 respectively) and on the other hand with the movable grid bar (10). And the conductive means (4
7. A method according to claim 5, wherein the step (7) is fixedly mounted on the tubular member (46) and on the opposing parallel sides (50, 51) of the movable grid bar (10), respectively. Isolation grid. 8. The movable grid bar (10) is movably mounted on at least one upper movable cross beam (22) in the area of its upper part (18) and in the area of its lower part (19). The pendant unit (25) is movably mounted on at least one lower movable cross beam (23), while the suspension units (25) are interconnected via one or more lower movable cross beams (23). Item 1
8. The separation grid according to any one of claims 1 to 7. 9. The drive unit (16) having at least one eccentric mechanism (41).
And the eccentric mechanism (41) is configured to actuate the movable grid bar (10) via conducting means (42) connected to one or more upper movable cross beams (22); Thus, the movable grid bar (10) is configured to directly operate the suspension unit (25), and solid particles and objects (
9. Separation grid according to any of the preceding claims, wherein the desired stepwise collection and movement of 4) and transfer to the outlet (17) are generated. 10. A suspension unit comprising a frame structure comprising two spaced-apart substantially parallel side plates (5) for receiving said separation unit (8) therebetween. Separation grid according to any of the preceding claims, wherein (25) is arranged in a protective position diverting from the separation unit (8) on the face (6) of the side plate (5).