CA2020973A1 - Separating apparatus, in particular for sewage clarification plants - Google Patents
Separating apparatus, in particular for sewage clarification plantsInfo
- Publication number
- CA2020973A1 CA2020973A1 CA002020973A CA2020973A CA2020973A1 CA 2020973 A1 CA2020973 A1 CA 2020973A1 CA 002020973 A CA002020973 A CA 002020973A CA 2020973 A CA2020973 A CA 2020973A CA 2020973 A1 CA2020973 A1 CA 2020973A1
- Authority
- CA
- Canada
- Prior art keywords
- plates
- separating apparatus
- plate
- rake
- end edge
- 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.)
- Abandoned
Links
- 238000005352 clarification Methods 0.000 title claims abstract description 5
- 239000010865 sewage Substances 0.000 title claims description 5
- 230000007423 decrease Effects 0.000 claims abstract 2
- 125000006850 spacer group Chemical group 0.000 claims description 38
- 238000004140 cleaning Methods 0.000 claims description 25
- 239000007787 solid Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000002351 wastewater Substances 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 2
- 241001527902 Aratus Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
- B01D33/275—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces using contiguous impervious surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Abstract A separating apparatus, in particular for clarification plants, comprises a revolving strainer rake or rake sieve having a plurality of series connected rake sieve sections which each consist of adjacently disposed hook-like plates, each plate having a hook portion projecting from the front end edge, wherein the thickness of each plate decreases from the front end edge in the direction towards the rear end edge.
Description
Separating apparatus, in particular for sewage clarification plants The invention relates to a separating apparatus, in part-icular for sewage clari~ication plants, and provic'es a str~er for ren~ovmc floati~g ~1ebris from ~ctter. Thus the invention relates to a separating apparatus for sep-arating solids or the like from solid-charged waste water.
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The invention is based on the problem of providing a sep-arating apparatus which permits effective removal of solids from waste water or the like and at the same time allows ~- -cleaning of the rake sieve without any danger of jamming between the rake sieve and the cleaning comb.
The rake sieve of the separating apparatus is advantageously constructed in such a manner that a variable width be~ween the plates or bars forming tne rake sieve is possible and the applicabili.y of the separating apparatus is variable to a great extent. The gap width bett.~een the plates or bars forming the rake sieve preferably lies in the range from 3 mm to lO mm whilst the width of the rake sieve prer-erably lies in the range from 30 cm to lOO cm.
The s'~pe OL the bars permits a self-cleaning of the rake sieve during operation. By the tapering form of the plates or bars jamming is erfectively prevented between the bars and the cleaning comb and removal of particles adhering to the rakes ensured in simple manner.
With the cleaning apparatus in optimum manner textiles, i plastic and paper, rubber waste, foodstuif waste, algae and , . ~ . . . .
' , ~
, ' ~ : ' :
other domestic refuse, sand and stone and industrial waste can be removed from clarification plants.
~ereinafter a preferred embodiment of the se~arating ~?P-aratus will be described with the aid of the drawings, wherein:
Figure 1 is a perspective view of a separating apparatus, Figure 2 shows to a greatly enlarged scale the rear view of a bar, Figure 3 is a side view of the bar according to Figure 2, Figure 4 is a plan view of a link member, Figure S is a side view of a link member corresponding to Figure 4, Figure 6 is a plan view of part of the rake sieve, Figure 7 is a side view o~ a sprocket, Figure 8 is an illustration for explaining the cooper-; ation between cleaning co~b and cleaning sieve, and Figure 9a and Figure 9b are illustrations to explain a spacer element for the cleaning comb Hereinafter with reference to Figure 1 a separating ap?aratus will be explained as regards its general structure. The separating apparatus comprises a revolving r~e sieve or strainer rake 1 which consists of a plurality of rake sieve sections which are arranged connected together in series in chain manner and in Figure 1 only partially illustrated and denoted by 2, 3, 4 etc. The rake sieve consisting or these rake sieve sec-~: , . . .
., ~ , , ~., ,:. ' ~ ' ~ .' .
: ' , '.' :-tions 2, 3, 4 etc. extends round an upper and lower revers-ing means comparable to a conveyor belt, the reversing means being indicated only schematically and denoted by 8 and 9. In the embodiment illustrated the reversing means 8, 9 consists in each case of sprockets. The sprockets in the embodiment described are arranged beneath the rake sieve and in engagement with a portion thereof.
The upper reversing means 8 is in drive relationship with a drive unit which is not illustrated and has ror example the form of an electric motor. The rake sieve 1 can thus be moved in Figure 1 clockwise in the manner or a conveyor belt, the lower reversing means 9 extenàing with a corres-ponding portion of the rake sieve 1 into a sewage or waste water channel or the like from which solids are to be re-rnoved. The solids are conveyed upwardly on the front side, not illustrated in,Figure 1, of the separating apparatus by rneans of the rake sieve and after being transported over the upper reversing means 8 discarded Erom the rake sieve 1 into a prepared container or the lilce. ~eneath the upper re-versing means 8, and rearwardly in the transport direction, at a predeterrnined distance from the reversing or deflecting means 8 there is a cleaning cornb 12 which is in engagement or meshes with the rake sieve 1. The rake sieve 1 on passing the cleaning comb 12 is at least largely ~reed from part-icles pressed into the rake sieve 1 and/or adhering to the plates and the particles removed in this manner likewise drop into the container disposed beneath the reversing means 8. The sections 2, 3, etc., of the rake sieve 1 pass-ing the cleaning comb 12 are ~hus at least largely freed from solid particles and are ready on entering the waste water channel to take up solid particles again and transport them upwardly in the direction towards the upper reversing means 8.
., ~
: ~
, To arrange the separating apparatus in the inclined posit-ion shown in Figure 1 a support 13, 14 is provided for ex-ample laterally on each side of the separating apparatus.
The endless and circulating rake sieve 1 consists of a plurality of rake sieve sections, each section 2, 3, etc., in turn being made up in the example of embodiment ill-ustrated in Figures 2 to 6 from individual bars or plates 16 and spacer elements 17 disposed therebetween. According to Figure 6 per section a pair of hinge pins or pivot pins 18. 19 is provided, o which for example the hinge pin 18 is inserted through an upper opening 20 o all the parallel disposed plates 16 and through an opening 21 o likewise parallel disposed spacer elements 17 so that along the axis of the hinge pin 18 a plate 16 and a spacer element 17 al-ternate in repeated succession. Thus, between each pair of plates lS a spacer element 17 is provided and according to Figure 6 as chain-like link member leads to the following section and is there likewise arranged between a respective pair of plates.
In the exarnple of embodiment shown in Fi~. 5 on the hinge pin 18, seen from the left, the plate 16~ spacer element 17, plate 16a, spacer element 17a, plate 16b, spacer element 17b and plate 16c are arranged. Articulately mounted on the hinge pin 19' disposed thereabove is a plate 16', spacer element 17, plate 16'a, spacer element 17a, plate 16'b, spacer element 17b and plate 16~co The spacer elements 17, 17a, 17b represent the connecting links between the adjacent or consecutive rake sections.
To set the ra~e sieve 1 in a circulating movement/ on each o. the spacer elements 17 17a, etc. t a driver stud 23 is formed which preferably extends tending outwardly o.- the plane of the spacer elernent 17 and points in a direction perpendicular to the transport plane and opposite to the .
hook portions 25 of the plates 16, still to be explained, in order to mesh with the sproc~ets of the reversing means 8, 9. Instead of the spacer element 17 shown in ~igures 4 and 5 it is at least partially possible to use chain~ e links which do not have the driver stud 23. In such an e,nbodiment at least in the region of the transport sieve or sieve ra~e 1 moving over the sprockets of the reversing means 8, 9 spacer elements 17 of the type described in Figure ~ are provided, thereby ensuring a drive connection to the reversing means 8 serving as drive.
An essential feature of the separating apparatus described resides in the formation or configuration of the lamellae or plates 16. As Figure 2 shows all the plates 16 have a substantially hook-shaped form and a rront end edge 26, i.e.
directed outwardly with respect to the separating apparatus, and a rear end edge 27 For receiving the hinge pins 18, 19 in each plate 16 an upper opening 20a and a lower opening 20b are provided between which~the plate preferably has a slightly arcuate form. The thickness of the plate 16 de-creases from the front end edge 26 in the direction towards the rear end edge 27 so that between the plate portions 20'a;
20'b comprising the openings 20a, 20b a tapering OL the plates is defined over the length of the plate portion denoted by 30. In a preferred ernbodiment the thickness or the plate in the region of the end edge 27 is about 70 ~
of the thickness of the front end edge 26 giving a tapering defined by an angle of about 1.
The plates 16 pre erably consist of plastic. With respect to their centre plane 31 (Figure 2) the side walls 32, 33 of each plate 16 are made e~tending laterally inverted so that opposite tne portions 20'a, 20'b having parallel side walls incisions in the rorm of small steps 20i'a, 20"b are present.
.
As apparent from the illustration of Figure 3, in contrast the thickness of the plates 16 is constant throughout in the region of the portions 20'a, 20'b, i.e. the plate 16 has the thickness corresponding to the end edge 26 and thus ensures a planar engagement with the adjacent spacer elements 17. The hook portion of the plate 16 denoted by 25 pro-jects from the end edge 26 in a direction opposite to the end edge 27 and serves in the manner described for receiving solid particles.
The spacer elements 17 preferably have the same thickness as the plates 15 in the regions of the openings 20a, 20b, or of the end edge 26 and define the spacing between ad-jacent plates 16 of each section 2, 3 etc. If the space between the adjacent and parallel arranged plate 15 is to be greater than described above spacer elements 17 are em-ployed which in the region of the openings 21a, 21~ have annular flanges 35a, 35b or at least in the region of the openings 21a, 21b annular widenings.
The two openings 21a, 21b of each spacer element 17 corres-pond in size and rOrln to the openings 20a, 20b o~ the plates 16. Said openings 21a, 21b of the spacer elements 17 have circular form and are provided for acconrnodating the hinge pins 18, 19.
The configuration Or each plate portion 30 of each plate 16 tapering from the end edge 26 in the direction towards the end edge 27 with the cleaning comb 12 shown in Figure 1 ensures an engagernent of the cleaning comb teeth into the matching rake sieve sections and easy expulsion or solid particles stuck between the plates 16 in the direction to-wards the end edge 27 without any danger of jamming of the solid particles and/or the cleaning comb portions between the plates lo. The tapering configuration of the plates 15 thus substantially contributes to smooth running of the separating apparatus and to a simple troublefree cleaning ~ -, ~ .
, . . ~
, ~' ' . . , of the rake sections after passing the upper reversing means 8 and the return movement into the waste water duct.
The rotatable arrangement of the plates 16 on the one hand and the spacer elements 17 on the other on the hinge pins 18, 19 guarantees the necessary mobility o the entire rake sieve 1 whilst the spacer elenents 17 serves at least partially simultaneously as counter drive elements with respect to the sprocket or sprockets of the reversing means 8. The plates 16 have in one embodiment an overall height of about 13 cm, whilst the hook portion 25 has a total length of about 7 cm.
Fig. 7 shows a sprocket 40 which in the region of the re-versing Means 8 serves for driving the rake sieve 1. Said sprocket has with respect to the embodiment described for example a width of 60 mm ensuring engagement between the sprocket 40 and for example 10 rows of parallel adjacent spacer elements 17. The sprocket 40 has depressions 41 into which the driver studs 23 of the spacer elements l7 enter.
The angle between adjacent depressions 41 is made somewhat greater than the angle between the two openings 20a, 20b of the plates 16 with respect to the shaft of the sprocket 40, thereby adapting the rotation of the sprocket 40 to the plates 16 lylng between the spacer elements 17.
Figures 8 and 9a, 9b show parts of the cleaning cornb 12 which meshes with the rake sieve 1 and plates 16 or each rake sieve section. Preferably, the cleaning comb consists of a plurality of individual independent cornb units, this having the advantage that when teeth of the cleaning comb are damaged the entire cleaning comb need not be replaced but only one of the units making up the cleaning comb. Each unit of the cleaning comb 12 consists of a plurality of comb plates 44 of the type shown in Figure 8. The plate 44 has substantially the form of an inverted V and comprises two legs 44a and 44b of which the leg 44a forms a tooth-::
shape portion 45 which engages into the gap between platepairs. The position association between the leg 44a and the plates 16 is illustrated in Figure 8. The leg 44b serves to fix the combing plate 44 and has a circular open-ing 46 serving to receive a holding pin or the like. To keep the combing plates 44 spaced apart corresponding to the arrangement of the plates 16 with the spacer elements 17, comb spacer plates 48 are provided which have substantially a triangular form, the tip of the triangle being flattened.
Figure 8 shows the position of the spacer plates 48 with respect to the adjacent combing plate 44. The thickness of the combing spacer plates 48 is greater than the thickness of the plates 16. The spacer plates 48 are likewise pro-vided with preferably circular openings, ensuring an al-ternating arrangement of combing plates 44 and combing spacer plates 48 on the associated support ring pin.
It is apparent from Figure 8 that the tooth-shaped portion 45 engages only over a portion of the width of the leg 30 of the plate 16, ensuring a movement past the annular flanges 35a, 35b during the movement indicated by the arrow 50 of the rake sieve section represented by the plate 16 in Figure 8 past the cleaning comb 12.
The rake sieves used in the separating apparatus have a preferred width between 300 mm and 1000 mm, the gap width between the individual plates 16 lying by appropriate con-figuration of the spacer elements 17 preferably between 3 mm and 10 mm.
:
. . .
.
The invention is based on the problem of providing a sep-arating apparatus which permits effective removal of solids from waste water or the like and at the same time allows ~- -cleaning of the rake sieve without any danger of jamming between the rake sieve and the cleaning comb.
The rake sieve of the separating apparatus is advantageously constructed in such a manner that a variable width be~ween the plates or bars forming tne rake sieve is possible and the applicabili.y of the separating apparatus is variable to a great extent. The gap width bett.~een the plates or bars forming the rake sieve preferably lies in the range from 3 mm to lO mm whilst the width of the rake sieve prer-erably lies in the range from 30 cm to lOO cm.
The s'~pe OL the bars permits a self-cleaning of the rake sieve during operation. By the tapering form of the plates or bars jamming is erfectively prevented between the bars and the cleaning comb and removal of particles adhering to the rakes ensured in simple manner.
With the cleaning apparatus in optimum manner textiles, i plastic and paper, rubber waste, foodstuif waste, algae and , . ~ . . . .
' , ~
, ' ~ : ' :
other domestic refuse, sand and stone and industrial waste can be removed from clarification plants.
~ereinafter a preferred embodiment of the se~arating ~?P-aratus will be described with the aid of the drawings, wherein:
Figure 1 is a perspective view of a separating apparatus, Figure 2 shows to a greatly enlarged scale the rear view of a bar, Figure 3 is a side view of the bar according to Figure 2, Figure 4 is a plan view of a link member, Figure S is a side view of a link member corresponding to Figure 4, Figure 6 is a plan view of part of the rake sieve, Figure 7 is a side view o~ a sprocket, Figure 8 is an illustration for explaining the cooper-; ation between cleaning co~b and cleaning sieve, and Figure 9a and Figure 9b are illustrations to explain a spacer element for the cleaning comb Hereinafter with reference to Figure 1 a separating ap?aratus will be explained as regards its general structure. The separating apparatus comprises a revolving r~e sieve or strainer rake 1 which consists of a plurality of rake sieve sections which are arranged connected together in series in chain manner and in Figure 1 only partially illustrated and denoted by 2, 3, 4 etc. The rake sieve consisting or these rake sieve sec-~: , . . .
., ~ , , ~., ,:. ' ~ ' ~ .' .
: ' , '.' :-tions 2, 3, 4 etc. extends round an upper and lower revers-ing means comparable to a conveyor belt, the reversing means being indicated only schematically and denoted by 8 and 9. In the embodiment illustrated the reversing means 8, 9 consists in each case of sprockets. The sprockets in the embodiment described are arranged beneath the rake sieve and in engagement with a portion thereof.
The upper reversing means 8 is in drive relationship with a drive unit which is not illustrated and has ror example the form of an electric motor. The rake sieve 1 can thus be moved in Figure 1 clockwise in the manner or a conveyor belt, the lower reversing means 9 extenàing with a corres-ponding portion of the rake sieve 1 into a sewage or waste water channel or the like from which solids are to be re-rnoved. The solids are conveyed upwardly on the front side, not illustrated in,Figure 1, of the separating apparatus by rneans of the rake sieve and after being transported over the upper reversing means 8 discarded Erom the rake sieve 1 into a prepared container or the lilce. ~eneath the upper re-versing means 8, and rearwardly in the transport direction, at a predeterrnined distance from the reversing or deflecting means 8 there is a cleaning cornb 12 which is in engagement or meshes with the rake sieve 1. The rake sieve 1 on passing the cleaning comb 12 is at least largely ~reed from part-icles pressed into the rake sieve 1 and/or adhering to the plates and the particles removed in this manner likewise drop into the container disposed beneath the reversing means 8. The sections 2, 3, etc., of the rake sieve 1 pass-ing the cleaning comb 12 are ~hus at least largely freed from solid particles and are ready on entering the waste water channel to take up solid particles again and transport them upwardly in the direction towards the upper reversing means 8.
., ~
: ~
, To arrange the separating apparatus in the inclined posit-ion shown in Figure 1 a support 13, 14 is provided for ex-ample laterally on each side of the separating apparatus.
The endless and circulating rake sieve 1 consists of a plurality of rake sieve sections, each section 2, 3, etc., in turn being made up in the example of embodiment ill-ustrated in Figures 2 to 6 from individual bars or plates 16 and spacer elements 17 disposed therebetween. According to Figure 6 per section a pair of hinge pins or pivot pins 18. 19 is provided, o which for example the hinge pin 18 is inserted through an upper opening 20 o all the parallel disposed plates 16 and through an opening 21 o likewise parallel disposed spacer elements 17 so that along the axis of the hinge pin 18 a plate 16 and a spacer element 17 al-ternate in repeated succession. Thus, between each pair of plates lS a spacer element 17 is provided and according to Figure 6 as chain-like link member leads to the following section and is there likewise arranged between a respective pair of plates.
In the exarnple of embodiment shown in Fi~. 5 on the hinge pin 18, seen from the left, the plate 16~ spacer element 17, plate 16a, spacer element 17a, plate 16b, spacer element 17b and plate 16c are arranged. Articulately mounted on the hinge pin 19' disposed thereabove is a plate 16', spacer element 17, plate 16'a, spacer element 17a, plate 16'b, spacer element 17b and plate 16~co The spacer elements 17, 17a, 17b represent the connecting links between the adjacent or consecutive rake sections.
To set the ra~e sieve 1 in a circulating movement/ on each o. the spacer elements 17 17a, etc. t a driver stud 23 is formed which preferably extends tending outwardly o.- the plane of the spacer elernent 17 and points in a direction perpendicular to the transport plane and opposite to the .
hook portions 25 of the plates 16, still to be explained, in order to mesh with the sproc~ets of the reversing means 8, 9. Instead of the spacer element 17 shown in ~igures 4 and 5 it is at least partially possible to use chain~ e links which do not have the driver stud 23. In such an e,nbodiment at least in the region of the transport sieve or sieve ra~e 1 moving over the sprockets of the reversing means 8, 9 spacer elements 17 of the type described in Figure ~ are provided, thereby ensuring a drive connection to the reversing means 8 serving as drive.
An essential feature of the separating apparatus described resides in the formation or configuration of the lamellae or plates 16. As Figure 2 shows all the plates 16 have a substantially hook-shaped form and a rront end edge 26, i.e.
directed outwardly with respect to the separating apparatus, and a rear end edge 27 For receiving the hinge pins 18, 19 in each plate 16 an upper opening 20a and a lower opening 20b are provided between which~the plate preferably has a slightly arcuate form. The thickness of the plate 16 de-creases from the front end edge 26 in the direction towards the rear end edge 27 so that between the plate portions 20'a;
20'b comprising the openings 20a, 20b a tapering OL the plates is defined over the length of the plate portion denoted by 30. In a preferred ernbodiment the thickness or the plate in the region of the end edge 27 is about 70 ~
of the thickness of the front end edge 26 giving a tapering defined by an angle of about 1.
The plates 16 pre erably consist of plastic. With respect to their centre plane 31 (Figure 2) the side walls 32, 33 of each plate 16 are made e~tending laterally inverted so that opposite tne portions 20'a, 20'b having parallel side walls incisions in the rorm of small steps 20i'a, 20"b are present.
.
As apparent from the illustration of Figure 3, in contrast the thickness of the plates 16 is constant throughout in the region of the portions 20'a, 20'b, i.e. the plate 16 has the thickness corresponding to the end edge 26 and thus ensures a planar engagement with the adjacent spacer elements 17. The hook portion of the plate 16 denoted by 25 pro-jects from the end edge 26 in a direction opposite to the end edge 27 and serves in the manner described for receiving solid particles.
The spacer elements 17 preferably have the same thickness as the plates 15 in the regions of the openings 20a, 20b, or of the end edge 26 and define the spacing between ad-jacent plates 16 of each section 2, 3 etc. If the space between the adjacent and parallel arranged plate 15 is to be greater than described above spacer elements 17 are em-ployed which in the region of the openings 21a, 21~ have annular flanges 35a, 35b or at least in the region of the openings 21a, 21b annular widenings.
The two openings 21a, 21b of each spacer element 17 corres-pond in size and rOrln to the openings 20a, 20b o~ the plates 16. Said openings 21a, 21b of the spacer elements 17 have circular form and are provided for acconrnodating the hinge pins 18, 19.
The configuration Or each plate portion 30 of each plate 16 tapering from the end edge 26 in the direction towards the end edge 27 with the cleaning comb 12 shown in Figure 1 ensures an engagernent of the cleaning comb teeth into the matching rake sieve sections and easy expulsion or solid particles stuck between the plates 16 in the direction to-wards the end edge 27 without any danger of jamming of the solid particles and/or the cleaning comb portions between the plates lo. The tapering configuration of the plates 15 thus substantially contributes to smooth running of the separating apparatus and to a simple troublefree cleaning ~ -, ~ .
, . . ~
, ~' ' . . , of the rake sections after passing the upper reversing means 8 and the return movement into the waste water duct.
The rotatable arrangement of the plates 16 on the one hand and the spacer elements 17 on the other on the hinge pins 18, 19 guarantees the necessary mobility o the entire rake sieve 1 whilst the spacer elenents 17 serves at least partially simultaneously as counter drive elements with respect to the sprocket or sprockets of the reversing means 8. The plates 16 have in one embodiment an overall height of about 13 cm, whilst the hook portion 25 has a total length of about 7 cm.
Fig. 7 shows a sprocket 40 which in the region of the re-versing Means 8 serves for driving the rake sieve 1. Said sprocket has with respect to the embodiment described for example a width of 60 mm ensuring engagement between the sprocket 40 and for example 10 rows of parallel adjacent spacer elements 17. The sprocket 40 has depressions 41 into which the driver studs 23 of the spacer elements l7 enter.
The angle between adjacent depressions 41 is made somewhat greater than the angle between the two openings 20a, 20b of the plates 16 with respect to the shaft of the sprocket 40, thereby adapting the rotation of the sprocket 40 to the plates 16 lylng between the spacer elements 17.
Figures 8 and 9a, 9b show parts of the cleaning cornb 12 which meshes with the rake sieve 1 and plates 16 or each rake sieve section. Preferably, the cleaning comb consists of a plurality of individual independent cornb units, this having the advantage that when teeth of the cleaning comb are damaged the entire cleaning comb need not be replaced but only one of the units making up the cleaning comb. Each unit of the cleaning comb 12 consists of a plurality of comb plates 44 of the type shown in Figure 8. The plate 44 has substantially the form of an inverted V and comprises two legs 44a and 44b of which the leg 44a forms a tooth-::
shape portion 45 which engages into the gap between platepairs. The position association between the leg 44a and the plates 16 is illustrated in Figure 8. The leg 44b serves to fix the combing plate 44 and has a circular open-ing 46 serving to receive a holding pin or the like. To keep the combing plates 44 spaced apart corresponding to the arrangement of the plates 16 with the spacer elements 17, comb spacer plates 48 are provided which have substantially a triangular form, the tip of the triangle being flattened.
Figure 8 shows the position of the spacer plates 48 with respect to the adjacent combing plate 44. The thickness of the combing spacer plates 48 is greater than the thickness of the plates 16. The spacer plates 48 are likewise pro-vided with preferably circular openings, ensuring an al-ternating arrangement of combing plates 44 and combing spacer plates 48 on the associated support ring pin.
It is apparent from Figure 8 that the tooth-shaped portion 45 engages only over a portion of the width of the leg 30 of the plate 16, ensuring a movement past the annular flanges 35a, 35b during the movement indicated by the arrow 50 of the rake sieve section represented by the plate 16 in Figure 8 past the cleaning comb 12.
The rake sieves used in the separating apparatus have a preferred width between 300 mm and 1000 mm, the gap width between the individual plates 16 lying by appropriate con-figuration of the spacer elements 17 preferably between 3 mm and 10 mm.
:
. . .
Claims (8)
1. A separating apparatus, in particular for sewage clar-ification plants, comprising a revolving strainer rake or rake sieve having a plurality of series connected rake sieve sec-tions which each consist of adjacently disposed hook-like plates, each plate having a hook portion projecting from the front end edge, wherein the thickness of each plate decreases from the front end edge in the direction towards the rear end edge.
2. A separating apparatus according to claim 1, each plate having an upper and lower opening for passage of a hinge pin, hinge stud or the like, wherein the thick-ness of the plates is constant or invariable over the plate width in the region of the openings.
3. A separating apparatus according to claim 1, wherein between every two pairs of plates of two adjacent rake sieve sections a spacer element is provided which con-nects the two plate pairs.
4. A separating apparatus according to claim 1, wherein at least some of the spacer elements each have a driver stud.
5. A separating apparatus according to claim 4, wherein the driver stud of the spacer elements points in a di-rection opposite to the hook portion of the plates.
6. A separating apparatus according to claim 1, wherein each spacer element comprises annular flanges in the region of its openings.
7. A separating apparatus according to claim 1 comprising a cleaning comb which engages from the front end edge of the plates into the intermediate spaces of adjacent plates of each rake sieve section, wherein the cleaning comb consists of a plurality of independent adjacently disposed cone units.
8. A separating unit according to claim 7, wherein each cleaning comb unit consists of combing plates having at least one projecting substantially pointed end and spacer plates arranged between the combing plates.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002020973A CA2020973A1 (en) | 1990-07-11 | 1990-07-11 | Separating apparatus, in particular for sewage clarification plants |
| EP90113227A EP0465701A1 (en) | 1990-07-11 | 1990-07-11 | Separator, particulary for sewage works |
| AU58917/90A AU634254B2 (en) | 1990-07-11 | 1990-07-12 | Separating apparatus, in particular for sewage clarification plants |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002020973A CA2020973A1 (en) | 1990-07-11 | 1990-07-11 | Separating apparatus, in particular for sewage clarification plants |
| EP90113227A EP0465701A1 (en) | 1990-07-11 | 1990-07-11 | Separator, particulary for sewage works |
| AU58917/90A AU634254B2 (en) | 1990-07-11 | 1990-07-12 | Separating apparatus, in particular for sewage clarification plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2020973A1 true CA2020973A1 (en) | 1992-01-12 |
Family
ID=27155212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002020973A Abandoned CA2020973A1 (en) | 1990-07-11 | 1990-07-11 | Separating apparatus, in particular for sewage clarification plants |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0465701A1 (en) |
| AU (1) | AU634254B2 (en) |
| CA (1) | CA2020973A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10517799B2 (en) | 2017-08-31 | 2019-12-31 | Omnicell, Inc. | Unit dose dispensing mechanisms |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE628980C (en) * | 1934-01-03 | 1936-04-20 | Rudolf Haas Dr Ing | Sieve for the purpose of sorting or dewatering in the manufacture of paper or the like. |
| CH476508A (en) * | 1968-07-02 | 1969-08-15 | Gujer Hans | Filter support belt for a continuously operating filter press |
| DE2248861C3 (en) * | 1972-10-05 | 1979-04-12 | Maschinenfabrik Reika-Werk Gmbh, 5800 Hagen | Trash cleaning device |
| DE2401956A1 (en) * | 1974-01-16 | 1975-07-17 | Tadashi Hagihara | Band filter for liquid effluent channel - made of hinged link chain with thorough self-cleaning action |
| US4188294A (en) * | 1978-05-18 | 1980-02-12 | Tadashi Hagihara | Rotary filter apparatus |
| US4323451A (en) * | 1978-05-30 | 1982-04-06 | Tadashi Hagihara | Array of filter elements |
| GB2045634B (en) * | 1979-03-26 | 1983-02-02 | Holmes B J | Screening apparatus |
| US4853116A (en) * | 1982-07-05 | 1989-08-01 | Hydropress Wallander & Co. | Device for collecting and discharging solid matter |
| US4597864A (en) * | 1985-05-28 | 1986-07-01 | Wiesemann Bruce O | Waste materials filtering apparatus |
| DE3715020C2 (en) * | 1987-05-06 | 1996-08-29 | Geiger Maschf Helmut | Fine screen with a double screen grate for waste water |
-
1990
- 1990-07-11 CA CA002020973A patent/CA2020973A1/en not_active Abandoned
- 1990-07-11 EP EP90113227A patent/EP0465701A1/en not_active Ceased
- 1990-07-12 AU AU58917/90A patent/AU634254B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0465701A1 (en) | 1992-01-15 |
| AU634254B2 (en) | 1993-02-18 |
| AU5891790A (en) | 1992-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |