CA1288703C - Device for collecting and discharging solid matter - Google Patents
Device for collecting and discharging solid matterInfo
- Publication number
- CA1288703C CA1288703C CA000529107A CA529107A CA1288703C CA 1288703 C CA1288703 C CA 1288703C CA 000529107 A CA000529107 A CA 000529107A CA 529107 A CA529107 A CA 529107A CA 1288703 C CA1288703 C CA 1288703C
- Authority
- CA
- Canada
- Prior art keywords
- bars
- displaceable
- stationary
- grid structure
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
ABSTRACT OF THE INVENTION
A device for collecting and discharging solid matter from a liquid-solid mixture in a waste collect-ing stream having a grid structure including alternate stationary and displaceable bars, the displaceable bars being interconnected so as to rotate as one unit, and a drive mechanism used to impart rotational motion to said displaceable bars.
A device for collecting and discharging solid matter from a liquid-solid mixture in a waste collect-ing stream having a grid structure including alternate stationary and displaceable bars, the displaceable bars being interconnected so as to rotate as one unit, and a drive mechanism used to impart rotational motion to said displaceable bars.
Description
( PATE~T
~41007-CIP
A DEVICE F~X C~LLECTING AND
DISCHARGING SOLID MATTER
BACKGROUND OF THE INVENTION
_ _ _ . __ The present invention re~ers to a device ~or collecting and discharging solid matter, ~lowing in conduits such as, ~or example, sewers.
The aim o~ the invention is to ~rovide a simple and e~icient device for collecting and dis-charging waste matter with a minimum o~ disturbance in the ~low in the conduit and having su~ici0nt capacity ~or use also with large conduits and culverts.
Previously known devices ~or collectiny and discharging re~use have included a stationary grid ar--ranged transversely with respect to the conduit, coop-erating with a vertically reciprocal ~ork device, orwith continuous filter webs of different designs and mesh widths, For operational e~iciency it is un~avor-able to have sha~ts, pulleys and other parts o~ the driving mechanism below the water level, as ~ibrous waste matter easily collects upon such parts.
The ~ork devices have certain advantayes, hut as parts of the driving mechanism pre~erably should not project below the water level, a rather high mount-ing structure will be required, The height thereof will increase with the depth of the conduit, as well as with the level o~ the discharge ~or the collected mat-ter A
~2:~38~
.
The continuous ~ilter webs su~er erom cer-tain disadvantages. The do~nwardly moviny portion o~
the web will always turn its inward ~ace towards the direction o~ water ~low. This means that particles having passed through the up~ardly moving portion o~
the web may be caught upon the inward ~ace o~ the web, and will be pressed into the same when the web passes over the lead rollers or the like.
Grid structures including reciprocal bars are known in the art, but they have not operated satis~ac-torily in conduits, neither with res~ect to collecting capacity, nor with resyect to simplicity and reliabili-ty.
~ummary o~ the Inv_nt on In order to overcome the disadvantages men-tioned above r the present invention, in a broad sense, is embodied in a device ~or collectin~ and discharging solid matter, especially solids ~rom a stream, ~lowing in conduits, and com~rising a grid structure extending into the condult. The device is characterized by the grid structure arranyed obliquely with respect to the ~low o~ the liquid-solid stream, and includes alternate stationary bars and displaceable bars. The edges oE
said bars are unieormly stepped, and turned towards the ~low direction o~ the water. The displaceable bars are interconnected to ~orm at least one unit, and are operated by a mechanism adapted to impart a movement upon the displaceable bars so any point adapted to col-lect and to discharge matter per~orms a closed circui-tous path including a vertical component o~ movementwithin each path.
The inclination o~ the bars is advantageously selected so the terraces o~ the steps are, in use, sub-stantially horizontally oriented, the terraces being about as broad as the steps are high.
.3 ~2~31!37~3~
The dlsplaceable bars,~within each unit, are preferably interconnected by a beam structure running transversely below the bars, the operating mechanism comprising a pair of rods projecting from the beam structure and arranged substantially perpendicularly to the plane of the bars, as well as a further rod attached to each displaceable bar located outmost in -the unit o~ bars, said bars each carrying an eccentric disc, interconnected in pairs by chains and driven by a common power source so as to impart a circular motion to the displaceable bars when the operating mechanism is engaged.
Thus, the invention contemplates a device including a grid structure located in a conduit for collecting and discharging solid matter from a waste collecting stream having a liquid-solid mixture therein which comprises an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, with the displaceable bars alternating with the stationary bars, with the series of stationary and displaceable bars being configured -to form steps, and further with the displaceable bars being placed at ~0 outermost positions of the series, and with the stationary and ; displaceable bars having means to retard -the downward movement of solid matter on the inclincd grid structure, displaceable vertical side plates are a~fixed to the outermost displaceable bars which move in tandem with the displaceable bars and are displaceable therewith so as to substantially prevent any solid matter from falling along the sides of the grid structure, wherein the sta-tionary bars and the displaceable bars are inclined at an angle such that, in use, any solid matter collected on the bars will be substantially preven-ted from falling back down the inclined grid structure. A means including a beam structure connected to -the displaceable vertical side plates and running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream interconnects at least two of the displaceable bars, and a driving means having a power source and a connecting means is connected to the displaceable vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the displaceable vertical side plates in the at least one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least ,,( one vertical component of movement within each path to cause solid matter collected at the grld structure to move upwardly along the displaceable bars.
In a preferred embodiment the top of the grid communicates with a further conveyor preferably a compacting conveyor, for removing the collected matter.
srief Descrip~ion of the Drawings Figure 1 schematically shows an elevation of a collecting and discharging device according to the invention mounted in a conduit.
Figure 2 shows the device according to Figure 1, as viewed from above.
Figure 3 shows an end vlew of the device according to line III-III in Figure 1.
Figure 4 shows a side view of parts of two bars.
Figure 5 shows a view as seen from above of the bars in Figure 4 as shown in line V-V.
Figures 6-11 show in-terrelated positions of the two bar parts of Figure 4 during one operating cycle.
Figure 12 shows a side view partly in section oE a modified device according to the invention.
Figure 13 is a section according to the line XIII-XIII in Figure 12.
Figure 1~ shows on a larger scale a top view of the stationary and displaceable bars in the device ~' ~" -3a-according to a modi~ied embodiment as shown ln Section XIV-XIV in Figure 12, appearing with Figure 12.
Figures 15 and 16 s~ow sections according to the lines XV-XV and XVI-XVI in Figure 12.~
Figure 17 shows a side view partly in section . ' o~ a second modi~ied device according to the invention.
Descri~tion o~ a Pre~erred Embodiment In the drawinys re~erence 10 denotes a condu-it, in which a collecting and discharging device 15, com~risiny a ~rame 11 and a driving motor 12 with asso-ciated gear box 13 driving a uair o~ chains 14, 14a, is '~
positioned. J~ -The device lS comprises a number of uarallel bars having stepped edges turned towards the flow o~ -water indicated by the arrow 16. Every second bar 17 ;i is statio~ary and every second bar 18 is displaceable.
The bars will thus eorm one stationary and one dis-placeable grid.
The bars extend the eull breadth Oe the con-2~ duit 10, and Eorm a combined sieve and transporter.
The inclination o~ the bars is selected so the terraces 19 at the stepped bars are located substantially hori-zontal, ~hen the device is mounted eor o~eration in the conduit 10. The terraces 19 may possibly be given a sliyht inclination inwards so matter resting thereon does not show any tendency to ~all o~ the terraces.
The terraces 19 are about as broad as the heiyht o~ the steps.
A circular movement is imparted to the dis-placeable bars 18, provi~ing scissoring movement in re-lation to the stationary bars 17, and as will be evi-dent ~rom the ~ollowing description, solid matter col-lecting at the ~Jrid structure will be gradually moved upwards along the bars.
One displaceable bar 1~ is preferably located adjacent to one stationary bar so as to be guided ~.288~013 thereby The distance D between a displaceable bar and a stationary bar in an adjacent pair o~ bars can be selected with respect to the degree of sieve action desired. (Figure 5.) This selection of~the distance bet~1een the stationary bars 17 and the displaceable bars 18 insures very ~ine-mesh grid structure not obtainable with other designs having displaceable bars.
The solid matter ~rom a li~uid-solid mixture ~lowing through a waste collecting stream is o~ten ag-glomerated into lumps 30, which are ~irst caught at the vertical sides o~ the steps, and are pressed against the same by the flow of water.
As the vertical sides of two adjacent steps move in relation to each other the lumps 30 are gradu-ally pushed upwards and ~inally slide onto the adjacent terrace, whereupon the climb along the following verti-cal sides will start.
That will be best illustrated in Figures 6-11.
The dis~laceable bars 18 are mounted upon a beam structure 20 extending below the bars. In very broad conduits there may be two or more like units with independent driviny means. As shown in Figure 1, a connecting bar 26 extends outwardly, about perpendicu-lar to the place o~ the bars at each end o~ the beam structure 20. Each rod connects at its distal end to an eccentric disc 21.
Each o~ the two outermost displaceable bars 18 carries an upwardly directed plate 27 connected to an eccentric disc 21a~
Each pair of eccentric discs 21, 21a, posi-tioned on each side of the ~roup of displaceable bars 18 is interconnected by chains 14, 14a which as is men-tioned above are driven by the power source 12, 13.
The mounting of the displaceable bars 18 is such tilat they will ~ollow the movements o~ the eccen-_5_ 8~3 tric discs, which means that any point at the terraces 1~ of the steps will move in a closed circuitous path 22.
Refuse matter, cauyht by the qrid formed by the bars will, due to the specific relative movement between adjacent terraces 19 at the bars, which proYid-es a vertical component of movement, be successively pushed upwards along the stationary bars 17, as the displaceable bars per~orm their collecting and dis-charging movements.
The pattern o~ movement is illustrated inFigures 6-11, which show portions o~ two adjacent bars 17 and 18 during various steps in a movement cycle.
The stationary bar 17 is shaded, and the dis-placeable bar 18 is supposed to be in front o~ thestationary bar, as viewed in the drawings.
As a point o~ interest the corner between the terrace and the vertical side in the displaceable bar is used, and in Figure 6 a lump o~ re~use 3~ rests upon terrace l9a o~ the stationary bar 17, The correspond-iny terrace of the displaceable bar 18 is located below and inside o~ the step in bar 17.
In Fiyure 7 the step in bar 18 has moved out-wards and upwards and has li~ted the lump 30 ~rom ter-race l9a.
This movement continues during the followingphases of the circuitous path 22 illustrated in Figures 8 and 9 during which the lump 30 is lifted still high-er. In Figure 10 the step starts to move inwards/down-wards.
In Figure 11 the terrace of bar 18 has slidbelow the terrace o~ bar 17, and the lump 30 ls now de-posited upon the terrace l9b o~ bar 17 This movement will continue until the lump reaches the top of the grid structure. It is antici-pated that the movement provided by the power source .
~1.21~37~
' "
12, chains 1~, 14a, and each pair o~ eccentric discs 21, 21a will enable the displaceable bars to rotate at a speed in a range o~ approximately ~ive (5) to sixty ~60) rotations per minute, as provided by variable speed drive 13a, and ~o ~ransport waste materials at a .-rate in a range o~ approximately one (l) to twenty (20) ~eet per minute. Additionally, the variable speed drive is used to alter the removal o~ waste products depending on what material i5 sought to be ~iltered. ' When the collected matter reaches the upper end o~ the conveyor it is trans~erred into a delivery conduit 24, due to the action o~ a reciprocal piston compactor 25 o~ arbitrary known kind.
In the embodiment shown in Figures 12 and 13 the ~rame 11 o~ the collecting and discharging device according to the invention is placed in a conduit 10 into which the water to be cleaned is conveyed. The stationary bars 17 o~ the grid are at their upper and lower ends connected to each other by means oE connect-ing members in the ~orm o~ ~lat bars 31 and 32 welded 2~ to the lower edge, at which the structure o~ stationary bars in its upper part rests on and is attached to a transverse beam 33, while the lower part rests on the bottom o~ the conduit 10. The displaceable bars 18 also make a beam structure 20 and are ~or this purpose provided with a downwards projecting portion 34, on the underside Oe which transverse connecting members in the ~orm o~ ~lat bars 35 are welded. The outermost bars in the moving bar grid are designed as side plates 36 with -' a larger heiyht than the other bars and lack the ter-races 19. The side plates 36 are also welded to the connecting members 35. The structure o~ displaceable bars 18 is supported by the side plates 36 by way o~
connectin~ bars 26 pivoted thereto and a connecting plate 27 arranyed with each side,plate. The connecting ~1.28~37(~3 bar 26 and connecting plate ~7 are ~lexibly mounted to the eccentric discs 21, 21a. The object o~ the side plates 36, which limit the lateral movement o~ the grid is to prevent the discharged lump 3~ ~rom ~alling down along the sides o~ the grid and back to the filtered li~uid, Flow de~lectors 44, attached to anchorage rails 45 embedded in the conduit 10, extend ~rom the side walls o~ the conduit 10 and overlap the side plates 36 so that the water is guided towards the col-lecting and discharginy device 15. The constructionwith stationary ~low de~lectors 44 o~ers great advan-tages also with respect to mounting since the entire structure can be manu~actured and mounted in a ~ac-tory The anchorage rail 45 is a means to locate and accurately install the collecting and discharging de-vice 15 in a conduit In case o~ damage to the stati-onary or displaceable bars, they may be replaced with relative ease.
~ aste water and the like o~ten contains large amounts Oe hair and ~ibers, but also plastic bags and the like, which can collect behind the support struc-tures Oe the bars -- the connection members 31, 33, 35 -- so that the bars 17, 18 become blocked or plugged in a relatively short time or will even obstruct or pre-vent a relative movement between the bars. In order toovercome the problem o~ transporting the discharged lumps 30 away ~rom the uppermost step, so that it can be removed by a conveyor, e.g., an endless band 37, and ~urther to prevent the bars 17, 18 ~rom becoming block-ed, the stationary bars 17 have on their undersides,remote ~rom the steps, saw teeth 38 or the like, at least at the portions at the bars 17 located just oppo-site the connecting members 35 o~ the displaceable bars 18. Each time the displaceable bars make a working stroke, i.e., a closed circular path o~ movement 22, the saw teeth 38 will tear loose eventual objects stuck on the connecting members 35. A ~urther cleaniny ~28~3~703 e~ect between the bars is provided by means Oe dis tance and cleaning members 39 attached thereto and which pre~erably are arranged in the ~low direction o~
the water and welded to the two ~lat sides o~ the sta-tionary bars 17. Depending on the kind o~ waste waterwhich is to be cleaned the cleaning members 39 may be attached on a level with and substantially parallel to the "horizontal" terrace 19 o~ the bars 17, but it is also possible to arrange these more sparsely at every other or every third terrace~
The continuous discharge o~ the material, a~ter it has reached the uppermost step is provided by means Oe extended portions 40 and 41 arranged at the upper end o~ the stationary bars 17 as well as the dis-placeable bars 18, said portions being slightly inclin-ed in the direction ~rom the uppermost step to provide optimal discharge o~ captured material. In order to prevent objects ~rom being stuck between the bars, ex-tended portions 40, ~1 are within this area designed with a thickness such that the space between the stati-onary bars 17 is substantially eilled out, so that there is only a small clearance le~t, as is shown in Figure 16. For preventing hair and other objects ~rom collecting in the connecting members 31 Oe the bars and the transverse beam 33 also within this area, the lower edges o~ the displaceable bars 18 are pre~erably pro-vided with a second set o~ saw teeth 42, which in the same way as the saw teeth 38, at each working stroke will come so closa to the connecting members 31, 33 that a cleaniny is per~ormed.
For preventing opening o~ the lowermost part o~ the grid corresponding to an enlarged slot width at the upward stroke o~ the displaceable bars, and thus allowing larger objects to pass through these slots, the stationary bars 17 are at their lower end desiyned with distance plates 43, as can be seen in Figure 15, _g_ ~ (-7~
so that when the displaceable bars are in their lower position the slots in the lowermost part o~ the grid are essentially blocked. When the displaceable bars 18 are in their uppermost position, the slot~ opening will be maintained at desired width D.
In order to provide more convenient mainten-ance ~or the device 15, there is provided a li~ting de-vice such as a winch 4~ mounted to ~rame 11 and having li~tiny cables 47 attached to li~ting drive 46 and to the side plates 36. ~hen service or inspection o~ the device 15 is required, the winch 46 may be engaged to elevate the submerged portion o~ the device 15 to a level above the liquid in conduit 10.
Prior to elevating device 15, connecting bar 26 is detached ~rom eccentric disc 21. Ca~les 47 are connected in such a manner that the device 15 pivots at connecting points 21a and 33.
When the thickness o~ dis~laceable bars 18 is wider than desired width D, a brush member 48 is posi-tioned at the bottom o~ the grid in order to preventthe movement o~ large lu~s 30 erom passing between stationary bars 17 when the lowest displaceable bars 18 are in the up position.
To monitor and control proper operatiny speeds and to insure motion of the displaceable bar grid 18, a motion sensing device 49 is positioned at a tail sha~t 50 connected to the eccentric disc 21a. The sensing device 49 detects movement Oe sha~t SU which is the last ~oving part in the sequence Oe operation. As long as sha~t 50 is rotating, the device 15 is operat-ing properly.
In order to operate the device 15 at maximum e~iciency, a di~erential level monitoring device 51 is used to enga~e and disengage the power source 12 by sensing the level Oe ~luid in two separate locations as shown in Figure 12. As solids accumulate on the (~ --7~3 grid structure, the level of fluid in the liquid-solid stream will begin to rise. When the eluid reaches a particular level, the power source 12 will be engaged and the device 15 will operate as previously describ-ed, When the ~luid in the liquid-solid strearn ~alls below a certain level detected by the monitoring device 51, the power source 12 will be disengaged and the process allowed to repeat itself.
Certain kinds of objects which come along with the flowing water can be difeicult to transport on ; the device according to the invention, since these objects can roll or slip O~e the horizontal terraces o~
the steps. Such objects may include bottles, cans, or logs and the like. In order to discharge such objects, as is shown in the embodiment of Figure 17, the "hori-zontal" terraces 1~ o-E the stationary bars 17 as well as the displaceable bars 18 in the plane of the bars are tapered towards the center Oe the terraces. Pree-erably the terraces are part-circular or V-shaped, but other shapes are also possible. The shape is desi~ned such that entrapment of lumps 3~ will not occur. Other variations such as the anyle o~ inclination Oe device 15 are also possible.
It is evident that the operation as well as the specieic bar proeiles may be modified within the idea Oe the invention, and that further variations are possible within the scope of the appended claims.
~41007-CIP
A DEVICE F~X C~LLECTING AND
DISCHARGING SOLID MATTER
BACKGROUND OF THE INVENTION
_ _ _ . __ The present invention re~ers to a device ~or collecting and discharging solid matter, ~lowing in conduits such as, ~or example, sewers.
The aim o~ the invention is to ~rovide a simple and e~icient device for collecting and dis-charging waste matter with a minimum o~ disturbance in the ~low in the conduit and having su~ici0nt capacity ~or use also with large conduits and culverts.
Previously known devices ~or collectiny and discharging re~use have included a stationary grid ar--ranged transversely with respect to the conduit, coop-erating with a vertically reciprocal ~ork device, orwith continuous filter webs of different designs and mesh widths, For operational e~iciency it is un~avor-able to have sha~ts, pulleys and other parts o~ the driving mechanism below the water level, as ~ibrous waste matter easily collects upon such parts.
The ~ork devices have certain advantayes, hut as parts of the driving mechanism pre~erably should not project below the water level, a rather high mount-ing structure will be required, The height thereof will increase with the depth of the conduit, as well as with the level o~ the discharge ~or the collected mat-ter A
~2:~38~
.
The continuous ~ilter webs su~er erom cer-tain disadvantages. The do~nwardly moviny portion o~
the web will always turn its inward ~ace towards the direction o~ water ~low. This means that particles having passed through the up~ardly moving portion o~
the web may be caught upon the inward ~ace o~ the web, and will be pressed into the same when the web passes over the lead rollers or the like.
Grid structures including reciprocal bars are known in the art, but they have not operated satis~ac-torily in conduits, neither with res~ect to collecting capacity, nor with resyect to simplicity and reliabili-ty.
~ummary o~ the Inv_nt on In order to overcome the disadvantages men-tioned above r the present invention, in a broad sense, is embodied in a device ~or collectin~ and discharging solid matter, especially solids ~rom a stream, ~lowing in conduits, and com~rising a grid structure extending into the condult. The device is characterized by the grid structure arranyed obliquely with respect to the ~low o~ the liquid-solid stream, and includes alternate stationary bars and displaceable bars. The edges oE
said bars are unieormly stepped, and turned towards the ~low direction o~ the water. The displaceable bars are interconnected to ~orm at least one unit, and are operated by a mechanism adapted to impart a movement upon the displaceable bars so any point adapted to col-lect and to discharge matter per~orms a closed circui-tous path including a vertical component o~ movementwithin each path.
The inclination o~ the bars is advantageously selected so the terraces o~ the steps are, in use, sub-stantially horizontally oriented, the terraces being about as broad as the steps are high.
.3 ~2~31!37~3~
The dlsplaceable bars,~within each unit, are preferably interconnected by a beam structure running transversely below the bars, the operating mechanism comprising a pair of rods projecting from the beam structure and arranged substantially perpendicularly to the plane of the bars, as well as a further rod attached to each displaceable bar located outmost in -the unit o~ bars, said bars each carrying an eccentric disc, interconnected in pairs by chains and driven by a common power source so as to impart a circular motion to the displaceable bars when the operating mechanism is engaged.
Thus, the invention contemplates a device including a grid structure located in a conduit for collecting and discharging solid matter from a waste collecting stream having a liquid-solid mixture therein which comprises an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, with the displaceable bars alternating with the stationary bars, with the series of stationary and displaceable bars being configured -to form steps, and further with the displaceable bars being placed at ~0 outermost positions of the series, and with the stationary and ; displaceable bars having means to retard -the downward movement of solid matter on the inclincd grid structure, displaceable vertical side plates are a~fixed to the outermost displaceable bars which move in tandem with the displaceable bars and are displaceable therewith so as to substantially prevent any solid matter from falling along the sides of the grid structure, wherein the sta-tionary bars and the displaceable bars are inclined at an angle such that, in use, any solid matter collected on the bars will be substantially preven-ted from falling back down the inclined grid structure. A means including a beam structure connected to -the displaceable vertical side plates and running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream interconnects at least two of the displaceable bars, and a driving means having a power source and a connecting means is connected to the displaceable vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the displaceable vertical side plates in the at least one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least ,,( one vertical component of movement within each path to cause solid matter collected at the grld structure to move upwardly along the displaceable bars.
In a preferred embodiment the top of the grid communicates with a further conveyor preferably a compacting conveyor, for removing the collected matter.
srief Descrip~ion of the Drawings Figure 1 schematically shows an elevation of a collecting and discharging device according to the invention mounted in a conduit.
Figure 2 shows the device according to Figure 1, as viewed from above.
Figure 3 shows an end vlew of the device according to line III-III in Figure 1.
Figure 4 shows a side view of parts of two bars.
Figure 5 shows a view as seen from above of the bars in Figure 4 as shown in line V-V.
Figures 6-11 show in-terrelated positions of the two bar parts of Figure 4 during one operating cycle.
Figure 12 shows a side view partly in section oE a modified device according to the invention.
Figure 13 is a section according to the line XIII-XIII in Figure 12.
Figure 1~ shows on a larger scale a top view of the stationary and displaceable bars in the device ~' ~" -3a-according to a modi~ied embodiment as shown ln Section XIV-XIV in Figure 12, appearing with Figure 12.
Figures 15 and 16 s~ow sections according to the lines XV-XV and XVI-XVI in Figure 12.~
Figure 17 shows a side view partly in section . ' o~ a second modi~ied device according to the invention.
Descri~tion o~ a Pre~erred Embodiment In the drawinys re~erence 10 denotes a condu-it, in which a collecting and discharging device 15, com~risiny a ~rame 11 and a driving motor 12 with asso-ciated gear box 13 driving a uair o~ chains 14, 14a, is '~
positioned. J~ -The device lS comprises a number of uarallel bars having stepped edges turned towards the flow o~ -water indicated by the arrow 16. Every second bar 17 ;i is statio~ary and every second bar 18 is displaceable.
The bars will thus eorm one stationary and one dis-placeable grid.
The bars extend the eull breadth Oe the con-2~ duit 10, and Eorm a combined sieve and transporter.
The inclination o~ the bars is selected so the terraces 19 at the stepped bars are located substantially hori-zontal, ~hen the device is mounted eor o~eration in the conduit 10. The terraces 19 may possibly be given a sliyht inclination inwards so matter resting thereon does not show any tendency to ~all o~ the terraces.
The terraces 19 are about as broad as the heiyht o~ the steps.
A circular movement is imparted to the dis-placeable bars 18, provi~ing scissoring movement in re-lation to the stationary bars 17, and as will be evi-dent ~rom the ~ollowing description, solid matter col-lecting at the ~Jrid structure will be gradually moved upwards along the bars.
One displaceable bar 1~ is preferably located adjacent to one stationary bar so as to be guided ~.288~013 thereby The distance D between a displaceable bar and a stationary bar in an adjacent pair o~ bars can be selected with respect to the degree of sieve action desired. (Figure 5.) This selection of~the distance bet~1een the stationary bars 17 and the displaceable bars 18 insures very ~ine-mesh grid structure not obtainable with other designs having displaceable bars.
The solid matter ~rom a li~uid-solid mixture ~lowing through a waste collecting stream is o~ten ag-glomerated into lumps 30, which are ~irst caught at the vertical sides o~ the steps, and are pressed against the same by the flow of water.
As the vertical sides of two adjacent steps move in relation to each other the lumps 30 are gradu-ally pushed upwards and ~inally slide onto the adjacent terrace, whereupon the climb along the following verti-cal sides will start.
That will be best illustrated in Figures 6-11.
The dis~laceable bars 18 are mounted upon a beam structure 20 extending below the bars. In very broad conduits there may be two or more like units with independent driviny means. As shown in Figure 1, a connecting bar 26 extends outwardly, about perpendicu-lar to the place o~ the bars at each end o~ the beam structure 20. Each rod connects at its distal end to an eccentric disc 21.
Each o~ the two outermost displaceable bars 18 carries an upwardly directed plate 27 connected to an eccentric disc 21a~
Each pair of eccentric discs 21, 21a, posi-tioned on each side of the ~roup of displaceable bars 18 is interconnected by chains 14, 14a which as is men-tioned above are driven by the power source 12, 13.
The mounting of the displaceable bars 18 is such tilat they will ~ollow the movements o~ the eccen-_5_ 8~3 tric discs, which means that any point at the terraces 1~ of the steps will move in a closed circuitous path 22.
Refuse matter, cauyht by the qrid formed by the bars will, due to the specific relative movement between adjacent terraces 19 at the bars, which proYid-es a vertical component of movement, be successively pushed upwards along the stationary bars 17, as the displaceable bars per~orm their collecting and dis-charging movements.
The pattern o~ movement is illustrated inFigures 6-11, which show portions o~ two adjacent bars 17 and 18 during various steps in a movement cycle.
The stationary bar 17 is shaded, and the dis-placeable bar 18 is supposed to be in front o~ thestationary bar, as viewed in the drawings.
As a point o~ interest the corner between the terrace and the vertical side in the displaceable bar is used, and in Figure 6 a lump o~ re~use 3~ rests upon terrace l9a o~ the stationary bar 17, The correspond-iny terrace of the displaceable bar 18 is located below and inside o~ the step in bar 17.
In Fiyure 7 the step in bar 18 has moved out-wards and upwards and has li~ted the lump 30 ~rom ter-race l9a.
This movement continues during the followingphases of the circuitous path 22 illustrated in Figures 8 and 9 during which the lump 30 is lifted still high-er. In Figure 10 the step starts to move inwards/down-wards.
In Figure 11 the terrace of bar 18 has slidbelow the terrace o~ bar 17, and the lump 30 ls now de-posited upon the terrace l9b o~ bar 17 This movement will continue until the lump reaches the top of the grid structure. It is antici-pated that the movement provided by the power source .
~1.21~37~
' "
12, chains 1~, 14a, and each pair o~ eccentric discs 21, 21a will enable the displaceable bars to rotate at a speed in a range o~ approximately ~ive (5) to sixty ~60) rotations per minute, as provided by variable speed drive 13a, and ~o ~ransport waste materials at a .-rate in a range o~ approximately one (l) to twenty (20) ~eet per minute. Additionally, the variable speed drive is used to alter the removal o~ waste products depending on what material i5 sought to be ~iltered. ' When the collected matter reaches the upper end o~ the conveyor it is trans~erred into a delivery conduit 24, due to the action o~ a reciprocal piston compactor 25 o~ arbitrary known kind.
In the embodiment shown in Figures 12 and 13 the ~rame 11 o~ the collecting and discharging device according to the invention is placed in a conduit 10 into which the water to be cleaned is conveyed. The stationary bars 17 o~ the grid are at their upper and lower ends connected to each other by means oE connect-ing members in the ~orm o~ ~lat bars 31 and 32 welded 2~ to the lower edge, at which the structure o~ stationary bars in its upper part rests on and is attached to a transverse beam 33, while the lower part rests on the bottom o~ the conduit 10. The displaceable bars 18 also make a beam structure 20 and are ~or this purpose provided with a downwards projecting portion 34, on the underside Oe which transverse connecting members in the ~orm o~ ~lat bars 35 are welded. The outermost bars in the moving bar grid are designed as side plates 36 with -' a larger heiyht than the other bars and lack the ter-races 19. The side plates 36 are also welded to the connecting members 35. The structure o~ displaceable bars 18 is supported by the side plates 36 by way o~
connectin~ bars 26 pivoted thereto and a connecting plate 27 arranyed with each side,plate. The connecting ~1.28~37(~3 bar 26 and connecting plate ~7 are ~lexibly mounted to the eccentric discs 21, 21a. The object o~ the side plates 36, which limit the lateral movement o~ the grid is to prevent the discharged lump 3~ ~rom ~alling down along the sides o~ the grid and back to the filtered li~uid, Flow de~lectors 44, attached to anchorage rails 45 embedded in the conduit 10, extend ~rom the side walls o~ the conduit 10 and overlap the side plates 36 so that the water is guided towards the col-lecting and discharginy device 15. The constructionwith stationary ~low de~lectors 44 o~ers great advan-tages also with respect to mounting since the entire structure can be manu~actured and mounted in a ~ac-tory The anchorage rail 45 is a means to locate and accurately install the collecting and discharging de-vice 15 in a conduit In case o~ damage to the stati-onary or displaceable bars, they may be replaced with relative ease.
~ aste water and the like o~ten contains large amounts Oe hair and ~ibers, but also plastic bags and the like, which can collect behind the support struc-tures Oe the bars -- the connection members 31, 33, 35 -- so that the bars 17, 18 become blocked or plugged in a relatively short time or will even obstruct or pre-vent a relative movement between the bars. In order toovercome the problem o~ transporting the discharged lumps 30 away ~rom the uppermost step, so that it can be removed by a conveyor, e.g., an endless band 37, and ~urther to prevent the bars 17, 18 ~rom becoming block-ed, the stationary bars 17 have on their undersides,remote ~rom the steps, saw teeth 38 or the like, at least at the portions at the bars 17 located just oppo-site the connecting members 35 o~ the displaceable bars 18. Each time the displaceable bars make a working stroke, i.e., a closed circular path o~ movement 22, the saw teeth 38 will tear loose eventual objects stuck on the connecting members 35. A ~urther cleaniny ~28~3~703 e~ect between the bars is provided by means Oe dis tance and cleaning members 39 attached thereto and which pre~erably are arranged in the ~low direction o~
the water and welded to the two ~lat sides o~ the sta-tionary bars 17. Depending on the kind o~ waste waterwhich is to be cleaned the cleaning members 39 may be attached on a level with and substantially parallel to the "horizontal" terrace 19 o~ the bars 17, but it is also possible to arrange these more sparsely at every other or every third terrace~
The continuous discharge o~ the material, a~ter it has reached the uppermost step is provided by means Oe extended portions 40 and 41 arranged at the upper end o~ the stationary bars 17 as well as the dis-placeable bars 18, said portions being slightly inclin-ed in the direction ~rom the uppermost step to provide optimal discharge o~ captured material. In order to prevent objects ~rom being stuck between the bars, ex-tended portions 40, ~1 are within this area designed with a thickness such that the space between the stati-onary bars 17 is substantially eilled out, so that there is only a small clearance le~t, as is shown in Figure 16. For preventing hair and other objects ~rom collecting in the connecting members 31 Oe the bars and the transverse beam 33 also within this area, the lower edges o~ the displaceable bars 18 are pre~erably pro-vided with a second set o~ saw teeth 42, which in the same way as the saw teeth 38, at each working stroke will come so closa to the connecting members 31, 33 that a cleaniny is per~ormed.
For preventing opening o~ the lowermost part o~ the grid corresponding to an enlarged slot width at the upward stroke o~ the displaceable bars, and thus allowing larger objects to pass through these slots, the stationary bars 17 are at their lower end desiyned with distance plates 43, as can be seen in Figure 15, _g_ ~ (-7~
so that when the displaceable bars are in their lower position the slots in the lowermost part o~ the grid are essentially blocked. When the displaceable bars 18 are in their uppermost position, the slot~ opening will be maintained at desired width D.
In order to provide more convenient mainten-ance ~or the device 15, there is provided a li~ting de-vice such as a winch 4~ mounted to ~rame 11 and having li~tiny cables 47 attached to li~ting drive 46 and to the side plates 36. ~hen service or inspection o~ the device 15 is required, the winch 46 may be engaged to elevate the submerged portion o~ the device 15 to a level above the liquid in conduit 10.
Prior to elevating device 15, connecting bar 26 is detached ~rom eccentric disc 21. Ca~les 47 are connected in such a manner that the device 15 pivots at connecting points 21a and 33.
When the thickness o~ dis~laceable bars 18 is wider than desired width D, a brush member 48 is posi-tioned at the bottom o~ the grid in order to preventthe movement o~ large lu~s 30 erom passing between stationary bars 17 when the lowest displaceable bars 18 are in the up position.
To monitor and control proper operatiny speeds and to insure motion of the displaceable bar grid 18, a motion sensing device 49 is positioned at a tail sha~t 50 connected to the eccentric disc 21a. The sensing device 49 detects movement Oe sha~t SU which is the last ~oving part in the sequence Oe operation. As long as sha~t 50 is rotating, the device 15 is operat-ing properly.
In order to operate the device 15 at maximum e~iciency, a di~erential level monitoring device 51 is used to enga~e and disengage the power source 12 by sensing the level Oe ~luid in two separate locations as shown in Figure 12. As solids accumulate on the (~ --7~3 grid structure, the level of fluid in the liquid-solid stream will begin to rise. When the eluid reaches a particular level, the power source 12 will be engaged and the device 15 will operate as previously describ-ed, When the ~luid in the liquid-solid strearn ~alls below a certain level detected by the monitoring device 51, the power source 12 will be disengaged and the process allowed to repeat itself.
Certain kinds of objects which come along with the flowing water can be difeicult to transport on ; the device according to the invention, since these objects can roll or slip O~e the horizontal terraces o~
the steps. Such objects may include bottles, cans, or logs and the like. In order to discharge such objects, as is shown in the embodiment of Figure 17, the "hori-zontal" terraces 1~ o-E the stationary bars 17 as well as the displaceable bars 18 in the plane of the bars are tapered towards the center Oe the terraces. Pree-erably the terraces are part-circular or V-shaped, but other shapes are also possible. The shape is desi~ned such that entrapment of lumps 3~ will not occur. Other variations such as the anyle o~ inclination Oe device 15 are also possible.
It is evident that the operation as well as the specieic bar proeiles may be modified within the idea Oe the invention, and that further variations are possible within the scope of the appended claims.
Claims (16)
1. A device including a grid structure located in a conduit for collecting and discharging solid matter from a waste collecting stream having a liquid-solid mixture therein, comprising:
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, the displaceable bars alternating with the stationary bars, the series of stationary and displaceable bars being configured to form steps, and further with displaceable bars being placed at outermost positions of the series, the stationary and displaceable bars having means to retard the downward movement of solid matter on the inclined grid structure, displaceable vertical side plates affixed -to the outermost displaceable bars which move in tandem with the displaceable bars and are displaceable therewith so as to substantially prevent any solid matter from falling along the sides of the grid structure, the stationary bars and the displaceable bars being inclined at an angle such that, in use, any solid matter collected on the bars will be substantially prevented from falling back down the inclined grid structure, means including a beam structure connected to the displaceable vertical side plates and running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream for interconnecting at least two of the displaceable bars, means interconnecting the displaceable bars into one unit in the displaceable grid;
saw teeth formed on selected combinations of the displaceable bars and the stationary bars to prevent the displaceable bars from becoming blocked at the beam structure, and driving means having a power source and a connecting means connected to the displaceable vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the displaceable vertical side plates in said at least one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path to cause solid matter collected at the grid structure to move upwardly along the displaceable bars.
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, the displaceable bars alternating with the stationary bars, the series of stationary and displaceable bars being configured to form steps, and further with displaceable bars being placed at outermost positions of the series, the stationary and displaceable bars having means to retard the downward movement of solid matter on the inclined grid structure, displaceable vertical side plates affixed -to the outermost displaceable bars which move in tandem with the displaceable bars and are displaceable therewith so as to substantially prevent any solid matter from falling along the sides of the grid structure, the stationary bars and the displaceable bars being inclined at an angle such that, in use, any solid matter collected on the bars will be substantially prevented from falling back down the inclined grid structure, means including a beam structure connected to the displaceable vertical side plates and running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream for interconnecting at least two of the displaceable bars, means interconnecting the displaceable bars into one unit in the displaceable grid;
saw teeth formed on selected combinations of the displaceable bars and the stationary bars to prevent the displaceable bars from becoming blocked at the beam structure, and driving means having a power source and a connecting means connected to the displaceable vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the displaceable vertical side plates in said at least one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path to cause solid matter collected at the grid structure to move upwardly along the displaceable bars.
2. The device according to Claim 1 in which extension members are positioned at a downward incline at the upper ends of said stationary bars and displaceable bars to facilitate removal of filtered material.
3. A device according to Claim 1, in which terraces are formed by the edges of the stationary bars and displaceable bars.
4. A device according to Claim 1, including a pair of connecting bars connected above the waste collecting stream at one end to the displaceable vertical side plates formed on the outermost displaceable bars and at the other end to a pair of eccentric discs, said discs in turn being connected to a movement imparting mechanism by means of chains, which are in turn connected to a common power source so that movement will be imparted to both eccentric discs and the connecting bars simultaneously.
5. The device according to Claim 1 in which a motion sensing device is positioned on a tail shaft connected to one of said eccentric discs in order to detect and control rotational motion to insure proper operation.
6. The device according to Claim 1, wherein the stationary bars include the saw teeth being formed on the bottom of said stationary bars to prevent said stationary bars from becoming blocked at the beam structure.
7. The device according to Claim 1 in which the steps are substantially horizontally oriented.
8. The device according to Claim 1 in which a monitoring device is connected to said source of power to detect fluid levels in the liquid-solid stream so as to engage and disengage said source of power to provide maximum filtration efficiency with minimum operation.
9. The device according to Claim 1 in which distance plates are affixed to a lowermost and uppermost stationary bar.
10. The device according to Claim 1 in which distance and cleaning members are attached to said stationary bars so as to provide additional cleaning means for said device.
11. A device for collecting and discharging solid matter from a liquid-solid mixture flowing in a conduit in a waste collecting stream, comprising:
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid and alternating with the stationary bars, the bars being arranged obliquely in a conduit adapted to be positioned in a waste collecting stream containing a liquid-solid mixture, with the grid structure having an upper portion of sufficient length so as to extend above the surface of the waste collecting stream, with displaceable bars positioned at the outermost position of the series, a plurality of the stationary bars and the displaceable bars having edges curved back in the general ascending direction of the inclined grid structure so as to be turned toward the flow of the waste collecting stream, the stationary bars and the displaceable bars being arranged to form generally uniform steps having terraces on which solid matter from the waste collecting stream may be deposited, vertical side plates formed on the outermost displaceable bars which move in tandem with the displaceable bars so as to prevent any solid matter from falling along the sides of the grid structures, means interconnecting the displaceable bars into one unit in the displaceable grid, saw teeth formed on selected combinations of the stationary bars so as to prevent the displaceable bars from becoming blocked at the interconnecting means, driving means having a power source and a connecting means connected to the vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the vertical side plates in said one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path, to cause solid matter collected at the grid structure to move upwardly along the displaceable bars, and a compacting conveyor including a reciprocal piston located so as to receive matter lifted to the upper end of said grid structure and feed it into a delivery conduit.
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid and alternating with the stationary bars, the bars being arranged obliquely in a conduit adapted to be positioned in a waste collecting stream containing a liquid-solid mixture, with the grid structure having an upper portion of sufficient length so as to extend above the surface of the waste collecting stream, with displaceable bars positioned at the outermost position of the series, a plurality of the stationary bars and the displaceable bars having edges curved back in the general ascending direction of the inclined grid structure so as to be turned toward the flow of the waste collecting stream, the stationary bars and the displaceable bars being arranged to form generally uniform steps having terraces on which solid matter from the waste collecting stream may be deposited, vertical side plates formed on the outermost displaceable bars which move in tandem with the displaceable bars so as to prevent any solid matter from falling along the sides of the grid structures, means interconnecting the displaceable bars into one unit in the displaceable grid, saw teeth formed on selected combinations of the stationary bars so as to prevent the displaceable bars from becoming blocked at the interconnecting means, driving means having a power source and a connecting means connected to the vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the vertical side plates in said one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path, to cause solid matter collected at the grid structure to move upwardly along the displaceable bars, and a compacting conveyor including a reciprocal piston located so as to receive matter lifted to the upper end of said grid structure and feed it into a delivery conduit.
12. The device according to Claim 11 in which the means interconnecting the displaceable bars comprises a beam structure running transversely below the displaceable bars.
13. A device including a grid structure located in a conduit for collecting and discharging solid matter from a waste collecting stream having a liquid-solid mixture therein, comprising:
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, -the displaceable bars alternating with the stationary bars, the series of stationary and displaceable bars being configured to form steps, and further with displaceable bars being placed at outermost positions of the series, the stationary and displaceable bars having means to retard the downward movement of solid matter on the inclined grid structure, displaceable vertical side plates affixed to the outermost displaceable bars which move in tandem with the displaceable bars and are displaceable therewith so as to substantially prevent any solid matter from falling along the sides of the grid structure, the stationary bars and the displaceable bars being inclined at an angle such that, in use, any solid matter collected on the bars will be substantially prevented from falling back down the inclined grid structure, means including a beam structure connected to the displaceable vertical side plates and running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream for interconnecting at least two of the displaceable bars, driving means having a power source and a connecting means connected to the displaceable vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the displaceable vertical side plates in the at least one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path to cause solid matter collected at the grid structure to move upwardly along the displaceable bars.
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, -the displaceable bars alternating with the stationary bars, the series of stationary and displaceable bars being configured to form steps, and further with displaceable bars being placed at outermost positions of the series, the stationary and displaceable bars having means to retard the downward movement of solid matter on the inclined grid structure, displaceable vertical side plates affixed to the outermost displaceable bars which move in tandem with the displaceable bars and are displaceable therewith so as to substantially prevent any solid matter from falling along the sides of the grid structure, the stationary bars and the displaceable bars being inclined at an angle such that, in use, any solid matter collected on the bars will be substantially prevented from falling back down the inclined grid structure, means including a beam structure connected to the displaceable vertical side plates and running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream for interconnecting at least two of the displaceable bars, driving means having a power source and a connecting means connected to the displaceable vertical side plates such that, when the power source is engaged, the driving means will impart a movement to the displaceable vertical side plates in the at least one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path to cause solid matter collected at the grid structure to move upwardly along the displaceable bars.
14. The device according to Claim 13, in which distance and cleaning members are attached to the stationary bars so as to provide additional cleaning means for said device.
15. A device including a grid structure located in a conduit for collecting and discharging solid matter from a waste collecting stream having a liquid solid mixture therein, comprising:
an inclined grid structure formed by a series of statonary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, the displaceable bars alternating with the stationary bars, the series of stationary and displaceable bars being configured to form steps, and further with displaceable bars being placed at outermost positions of the series, the stationary and displaceable bars having means to retard the downward movement of solid matter on the inclined grid structure, means including a beam structure running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream for interconnecting at least two of the displaceable bars, means interconnecting the displaceable bars into one unit in the displaceable grid;
saw teeth formed on selected combinations of the displaceable bars and the stationary bars to prevent the displaceable bars from becoming blocked at the beam structure, and driving means having a power source and a connecting means connected to the displaceable bars such that, when the power source is engaged, the driving means will impart a movement to the displaceable bars so that at any point the edges of the displaceble bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path to cause solid matter collected at the grid structure to move upwardly along the displaceable bars.
an inclined grid structure formed by a series of statonary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid, the displaceable bars alternating with the stationary bars, the series of stationary and displaceable bars being configured to form steps, and further with displaceable bars being placed at outermost positions of the series, the stationary and displaceable bars having means to retard the downward movement of solid matter on the inclined grid structure, means including a beam structure running transversely below the displaceable bars and positioned on the inclined grid structure so as to be above the waste collecting stream for interconnecting at least two of the displaceable bars, means interconnecting the displaceable bars into one unit in the displaceable grid;
saw teeth formed on selected combinations of the displaceable bars and the stationary bars to prevent the displaceable bars from becoming blocked at the beam structure, and driving means having a power source and a connecting means connected to the displaceable bars such that, when the power source is engaged, the driving means will impart a movement to the displaceable bars so that at any point the edges of the displaceble bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path to cause solid matter collected at the grid structure to move upwardly along the displaceable bars.
16. A device for collecting and discharging solid matter from a liquid-solid mixture flowing in a conduit in a waste collecting stream, comprising:
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid and alternating with the stationary bars, the bars being arranged obliquely in a conduit adapted to be positioned in a waste collecting stream containing a liquid-solid mixture, with the grid structure having an upper portion of sufficient length so as to extend above the surface of the waste collecting stream, with displaceable bars positioned at the outermost position of the series, the stationary bars and the displaceable bars being arranged to form generally uniform steps having terraces on which solid matter from the waste collecting stream may be deposited, means interconnecting the displaceable bars into one unit in the displaceable grid, saw teeth formed on selected combinations of the stationary bars so as to prevent the displaceable bars from becoming blocked at the interconnecting means, driving means having a power source and a connecting means connected to the displaceable bars such that, when the power source is engaged, the driving means will impart a movement to the displaceable bars in said one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path, to cause solid matter collected at the grid structure to move upwardly along the displaceable bars and a compacting conveyor including a reciprocal piston located so as to receive matter lifted to the upper end of said grid structure and feed it into a delivery conduit.
an inclined grid structure formed by a series of stationary bars defining a stationary grid and a series of displaceable bars defining a displaceable grid and alternating with the stationary bars, the bars being arranged obliquely in a conduit adapted to be positioned in a waste collecting stream containing a liquid-solid mixture, with the grid structure having an upper portion of sufficient length so as to extend above the surface of the waste collecting stream, with displaceable bars positioned at the outermost position of the series, the stationary bars and the displaceable bars being arranged to form generally uniform steps having terraces on which solid matter from the waste collecting stream may be deposited, means interconnecting the displaceable bars into one unit in the displaceable grid, saw teeth formed on selected combinations of the stationary bars so as to prevent the displaceable bars from becoming blocked at the interconnecting means, driving means having a power source and a connecting means connected to the displaceable bars such that, when the power source is engaged, the driving means will impart a movement to the displaceable bars in said one unit so that at any point the edges of the displaceable bars will perform a generally closed circuitous path of movement including at least one vertical component of movement within each path, to cause solid matter collected at the grid structure to move upwardly along the displaceable bars and a compacting conveyor including a reciprocal piston located so as to receive matter lifted to the upper end of said grid structure and feed it into a delivery conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000529107A CA1288703C (en) | 1987-02-05 | 1987-02-05 | Device for collecting and discharging solid matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000529107A CA1288703C (en) | 1987-02-05 | 1987-02-05 | Device for collecting and discharging solid matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1288703C true CA1288703C (en) | 1991-09-10 |
Family
ID=4134914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000529107A Expired - Fee Related CA1288703C (en) | 1987-02-05 | 1987-02-05 | Device for collecting and discharging solid matter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1288703C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141893A (en) * | 2019-06-17 | 2019-08-20 | 新沂金瑞特石英材料有限公司 | A kind of quartz sand flotation machine filter structure |
-
1987
- 1987-02-05 CA CA000529107A patent/CA1288703C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141893A (en) * | 2019-06-17 | 2019-08-20 | 新沂金瑞特石英材料有限公司 | A kind of quartz sand flotation machine filter structure |
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