WO2013084124A1 - Ensemble tamis - Google Patents

Ensemble tamis Download PDF

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Publication number
WO2013084124A1
WO2013084124A1 PCT/IB2012/056857 IB2012056857W WO2013084124A1 WO 2013084124 A1 WO2013084124 A1 WO 2013084124A1 IB 2012056857 W IB2012056857 W IB 2012056857W WO 2013084124 A1 WO2013084124 A1 WO 2013084124A1
Authority
WO
WIPO (PCT)
Prior art keywords
strainer
inlet
trap
pipe
assembly
Prior art date
Application number
PCT/IB2012/056857
Other languages
English (en)
Inventor
Theunis Frederick Jacobus DREYER
Original Assignee
Dreyer Theunis Frederick Jacobus
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dreyer Theunis Frederick Jacobus filed Critical Dreyer Theunis Frederick Jacobus
Publication of WO2013084124A1 publication Critical patent/WO2013084124A1/fr
Priority to ZA2014/03978A priority Critical patent/ZA201403978B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks

Definitions

  • This invention relates to a strainer assembly.
  • the apparatus is for filtering water and in particular, irrigation water.
  • the invention finds specific application in centre pivot irrigation systems. BACKGROUND TO THE INVENTION
  • a strainer assembly comprising a trap arranged between an inlet and outlet, a strainer which divides the trap and a deflector which is located adjacent the trap and is inclined towards the inlet.
  • the invention further provides for the strainer to be a perforated plate which is shaped to provide the deflector; and for the inlet and outlet to be aligned.
  • inlet and outlet to be formed from a first pipe and the trap from a second pipe of greater diameter than the first; and for the trap to be fitted with guides to slidably receive side edges of the strainer with the deflector portion of the strainer sized to fit past the guides and having a curved edge to abut the wall inside the first pipe.
  • the trap to have a removable end plate; for the end plate to be fitted with a valve controlled discharge port on the inlet side of the strainer; and for the inlet and outlet to each be provided with a flange for connection into a water pipe.
  • strainer assembly to be for use on a centre pivot irrigation system; and for the assembly to be suited for fitment between the last tower and the overhang of the irrigation system.
  • Figure 1 shows a perspective view of a strainer assembly housing and of a strainer for use in the housing;
  • Figure 2 shows an end, cross-sectional view of the strainer;
  • Figure 3 shows a side and bottom view of a cross-pipe for the assembly
  • Figure 4 shows a side and front/rear view of a pipe forming a trap for the assembly
  • Figure 5 shows a bottom end view of the strainer assembly
  • Figure 6 shows a side cross-sectional view of the assembly.
  • a strainer assembly is indicated generally by reference numeral (1 ).
  • the assembly (1 ) is suited for use with an irrigation pivot system (not shown). More specifically, the assembly (1 ) will be fitted between the last tower of the pivot system and the overhanging sprinkler support.
  • the strainer assembly (1 ) is provided with a T-shaped housing.
  • the housing includes a trap (2) arranged between an inlet (3) and outlet (4), which are axially arranged in line with each other.
  • the inlet (3) and outlet (4) are formed from a first pipe (5) and the trap (2) from a second pipe (6).
  • the pipes (5) and (6) are provided of suitable steel or metal material.
  • the second pipe (6) is of slightly greater diameter than the first - the relevance of this will be explained below.
  • the first pipe (5) will have a diameter "x" of 152mm and the second (6), a diameter "y" of 164mm - see Figure 6.
  • the pipes (5) and (6) are cut with corresponding openings (7) and (8) to form a join and welded into a T-junction.
  • the openings (7) and (8) which form the join are cut to accommodate the variation between the pipe diameters.
  • the opening (7) in the operatively bottom side of the first pipe (5) is cut to a diameter of 164mm to accommodate the second pipe (6) which provides the trap (2).
  • the top end of the trap (2) is cut with a profiled opening to a diameter of 152mm (seen when viewed from the front/rear) to fit onto the first pipe (5) over the opening (7).
  • the edges of these openings (7) and (8) are appropriately chamfered along the join lines to facilitate the welding of these components.
  • the ends the first pipe (5) are fitted with annular flanges (9), welded in place at each end. These are for connection into the water line (not shown) of the centre pivot overhang.
  • the outlet (4) end of the pipe (5) together with its flange (9) is inclined to accommodate the inclination of the sprinkler overhang line into which the assembly (1 ) is connected. This is achieved by cutting the end of the pipe (5) at an angled (5.1 ) as indicated in Figure 3.
  • a strainer (10) is in use located to divide the trap (2) into inlet and outlet portions.
  • the strainer assembly (1 ) includes as a feature of the invention, a deflector (1 1 ).
  • the deflector (1 1 ) is arranged to direct water towards the trap (2).
  • the deflector (1 1 ) extends as part of the strainer (10) and is inclined towards the inlet (3).
  • the strainer (10) is a plate cut from perforated sheet steel or metal.
  • the sprinklers of the overhang (not shown) can accommodate particles in the irrigation water of about 8mm gauge size to pass.
  • the openings (12), which provide the gauge of the strainer plate (10), are of a diameter of 6mm. The gauge of the strainer plate (10) will vary depending on the equipment it serves.
  • the plate (10) has a rectangular wall portion (1 0.1 ). This has two opposite edges (10.2) providing parallel rails.
  • the rails (1 0.2) are spaced apart to provide the plate (10) with a width to fit into the inner diameter of the second pipe (5), about 160mm.
  • the deflector portion (10.3) of the strainer plate (10) extends as a tongue with a curved edge from the bend line at the operatively top end of the wall portion (10.1 ). Shoulders (10.4) that are operatively upwardly disposed are provided between the deflector portion (10.3) and the rails (10.2).
  • Oppositely arranged guides (20) are provided along the length of the trap (2).
  • the guides are linear ribs (20) closely spaced to slidably receive the rails (10.2) of the strainer plate (10).
  • the opening (7) between the inlet (3) and outlet (4) extends halfway into the first pipe (5).
  • a portion of the opening (7) is provided by two flats at (13.1 ) along the halfway line of the pipe (5).
  • the second pipe (6) has two oppositely disposed peaks with corresponding flats (13.2).
  • the deflector portion (10.3) of the strainer is sized to fit past the guides (20) to allow insertion of the strainer plate (10) into the operatively upper half of first pipe (5). It is also shaped with a curved edge to abut the wall inside the pipe (5).
  • the flats (13.1 ) in the opening (7) of the first pipe (5) each provide an inward step in the assembly (1 ).
  • the shoulders (10.4) on the strainer plate (10), to either side of the deflector portion (10.3), locate against or adjacent these steps (13.1 ) when the strainer plate (10) is fitted into the assembly (1 ).
  • the deflector (1 1 ) operatively occupies the top half of the first pipe (5) at an inclination relative to the axis of the pipe (5) and thus has a corresponding elliptical shape to fit closely against the inner wall, separating the inlet (3) from the outlet (4).
  • the deflector (1 1 ) is inclined with its operatively upper end closer to the inlet (3) and its operatively lower end closer to the outlet (4). In use, the flow of water to the outlet (4) serves to hold the edges of the deflector (1 1 ) against the wall of the first pipe (5).
  • the free, bottom end of the trap (2) is also fitted with a flange (14).
  • a removable end plate (1 5) is securable to the flange (14).
  • the end plate (15) has a discharge port (16), which will be fitted with a valve (not shown).
  • the port (16) is located on the inlet side of the strainer plate (10) and will be used to flush accumulated material from the trap (2).
  • the strainer plate (10) collects any solid objects and plant material in the irrigation water which are too large to pass through the openings (12). It has been found that the inclined deflector (1 1 ) at least partially deters against blockage of the strainer plate (10). A component of the water flow is directed downwardly into the trap (2). The flow of water provides a degree of agitation at the upstream side of the strainer plate (10) as opposed to where a strainer (without any deflector) is arranged normal to the flow of water from the inlet to the outlet. While stones and other such solid objects will usually sink in the trap (2), plant material is prone to become enmeshed by the strainer plate (10) where no deflector (1 1 ) is used.
  • the length of the trap (2) and strainer plate (10) will be varied for different applications.
  • the deflector portion (10.3) of the strainer plate (10) may be provided without openings or with smaller openings than are present in the wall portion (10.1 ).
  • the deflector (1 1 ) may be provided in various forms. It could for example be a plate welded in place inside the trap housing, between the inlet and outlet. Alternatively, the deflector could be provided as part of the configuration of the housing; for example, by a bend in the conduit wall opposite the trap (2).
  • strainer assembly of the invention while particularly suited thereto, need not be limited to irrigation pivot systems.
  • An assembly in accordance with the invention can be adapted for use in a wide variety of fluid filter applications.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

L'invention porte sur un ensemble tamis (10), lequel ensemble comprend un piège (2) disposé entre une entrée (3) et une sortie (4). Un tamis (1) divise le piège (2) et constitue un déflecteur (11) qui est disposé au voisinage du piège entre l'entrée et la sortie et qui est incliné vers l'entrée. Le tamis est une plaque perforée. L'entrée et la sortie sont constituées à partir d'un premier tuyau (5), et le piège est constitué à partir d'un second tuyau (6) ayant un diamètre supérieur à celui du premier tuyau. Le piège (2) a une plaque d'extrémité amovible (15), et comporte des guides pour recevoir de façon coulissante des bords latéraux du tamis. La partie de déflecteur du tamis est dimensionnée de façon à s'adapter au-delà des guides (20) et a un bord incurvé qui bute contre la paroi à l'intérieur du premier tuyau. La plaque d'extrémité (15) comporte un orifice de décharge commandé par vanne sur le côté d'entrée du tamis. L'entrée et la sortie comportent une bride pour le raccordement dans un tuyau d'eau. L'ensemble tamis est apte à une utilisation dans un système d'irrigation à pivot central entre la dernière tour et le surplomb.
PCT/IB2012/056857 2011-12-05 2012-11-30 Ensemble tamis WO2013084124A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2014/03978A ZA201403978B (en) 2011-12-05 2014-05-30 A strainer assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2011/08930 2011-12-05
ZA201108930 2011-12-05

Publications (1)

Publication Number Publication Date
WO2013084124A1 true WO2013084124A1 (fr) 2013-06-13

Family

ID=48573645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/056857 WO2013084124A1 (fr) 2011-12-05 2012-11-30 Ensemble tamis

Country Status (2)

Country Link
WO (1) WO2013084124A1 (fr)
ZA (1) ZA201403978B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106621507A (zh) * 2016-12-10 2017-05-10 芜湖航达网业有限公司 一种具有自清洁装置的污水过滤网结构
CN114558375A (zh) * 2022-03-02 2022-05-31 冀州中意复合材料股份有限公司 一种油水分离器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666101A (en) * 1969-08-18 1972-05-30 Parker Hannifin Corp Multiple filter device
US3789990A (en) * 1970-11-15 1974-02-05 M Drori Strainer for liquid pipe lines
US4366056A (en) * 1980-03-03 1982-12-28 E. Beaudrey & Cie Filter having a fixed strainer
US20090095682A1 (en) * 2006-09-25 2009-04-16 Paoluccio John A Catch basin filter absorber method for water decontamination

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666101A (en) * 1969-08-18 1972-05-30 Parker Hannifin Corp Multiple filter device
US3789990A (en) * 1970-11-15 1974-02-05 M Drori Strainer for liquid pipe lines
US4366056A (en) * 1980-03-03 1982-12-28 E. Beaudrey & Cie Filter having a fixed strainer
US20090095682A1 (en) * 2006-09-25 2009-04-16 Paoluccio John A Catch basin filter absorber method for water decontamination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106621507A (zh) * 2016-12-10 2017-05-10 芜湖航达网业有限公司 一种具有自清洁装置的污水过滤网结构
CN114558375A (zh) * 2022-03-02 2022-05-31 冀州中意复合材料股份有限公司 一种油水分离器

Also Published As

Publication number Publication date
ZA201403978B (en) 2016-09-28

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