WO2016207611A1 - Clapet de non-retour - Google Patents

Clapet de non-retour Download PDF

Info

Publication number
WO2016207611A1
WO2016207611A1 PCT/GB2016/051800 GB2016051800W WO2016207611A1 WO 2016207611 A1 WO2016207611 A1 WO 2016207611A1 GB 2016051800 W GB2016051800 W GB 2016051800W WO 2016207611 A1 WO2016207611 A1 WO 2016207611A1
Authority
WO
WIPO (PCT)
Prior art keywords
lid
return valve
locking arm
exit port
locking
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.)
Ceased
Application number
PCT/GB2016/051800
Other languages
English (en)
Inventor
Duncan Faulkner
Luke RUDDIMAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Water & Pest Technologies Ltd
Original Assignee
Water & Pest Technologies Ltd
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 Water & Pest Technologies Ltd filed Critical Water & Pest Technologies Ltd
Publication of WO2016207611A1 publication Critical patent/WO2016207611A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/042—Arrangements of means against overflow of water, backing-up from the drain
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

Definitions

  • the present invention relates to a non-return valve. More particularly, but not exclusively, the present invention relates to a non-return valve comprising a tubular member and a lid pivotally connected thereto, the lid having a locking arm pivotally connected thereto, the locking arm being arranged to engage an engagement mechanism when the lid is closed and the locking arm is in a locked position.
  • Non-return valves are known which can be used to prevent such damage. Generally these require modification of the manhole before they can be installed which can be expensive. Alternatively, the valve can be installed in line with the man hole but this requires the digging of a separate inspection chamber which is also expensive.
  • EP 2 459910 discloses a non-return valve which can be attached to the end of a domestic pipe at its point of entry into the manhole and which does not require modification of the manhole.
  • the locking mechanism comprises a lid which may be moved into a position covering the exit port of the valve. The lid prevents water from flowing through the non-return valve up the pipe. It also stops foul smells and odours from entering the pipe.
  • the lid can be locked closed for maintenance work by a locking mechanism.
  • the locking mechanism however is complex and unreliable.
  • the present invention seeks to overcome the problems of the prior art.
  • the present invention provides a non-return valve comprising a tubular member for insertion into a pipe, the tubular member comprising an entrance port, an exit port and a side wall extending therebetween; a lid pivotally connected to the tubular member and adapted to pivot about a pivot axis between an open position spaced apart from the exit port and a closed position covering the exit port; at least one engagement mechanism extending from the side wall proximate to the exit port; at least one locking arm connected by means of a pivot to the lid, the locking arm being adapted to be pivoted with respect to the lid about a pivot axis between an unlocked position and a locked position the locking arm being arranged such that when the lid is closed and the locking arm is in the locked position the locking arm engages the engagement mechanism.
  • the non-return valve according to the invention comprises a relatively simple and reliable locking mechanism which locks the lid firmly in place.
  • the engagement mechanism comprises a protrusion and the locking arm comprises a hook for engagement with the protrusion.
  • the non-return valve comprises a plurality of engagement mechanisms spaced apart around the exit port and a plurality of locking arms pivotally attached to the edge of the lid, each locking arm being arranged to engage with a corresponding engagement mechanism.
  • the non-return valve comprises first and second engagement mechanisms extending from the side wall on opposite sides of the exit port and first and second corresponding locking arms pivotally attached to the lid.
  • a locking plate extends between the locking arms.
  • the lid comprises a plurality of protrusions extending therefrom, the locking plate being adapted to be received between the protrusions when the locking arms are in the locked position.
  • the pivot axis of the at least one locking arm is parallel to the pivot axis of the lid.
  • the diameter of the tubular member increases from the exit port towards the entrance port.
  • the non-return valve further comprises a plurality of spaced apart resiliently deformable flanges extending from the side wall.
  • the lid is oval.
  • Figure 1 shows a non-return valve according to the invention with the lid open
  • Figure 2 shows the non-return valve of figure 1 with the lid closed and unlocked
  • Figure 3 shows the non-return valve of figure 1 with the ltd closed and locked.
  • the non-return valve 1 comprises a tubular member 2 .
  • the tubular member 2 comprises entrance and exit ports 3,4 and a side wall 5 extending therebetween along a long axis 6.
  • entrance port 3 is substantially normal to the length axis 6 and so is circular.
  • exit port 4 is inclined to the length axis 6 as shown and so is elliptical in shape.
  • the diameter of the tubular member 2 decreases from the entrance port 3 to the exit port 4. This has the effect of funnelling water received at the entrance port 3 to the exit port 4.
  • the thickness of the side wall 5 decreases close to the entrance port 3 in a direction towards the entrance port 3. This reduces turbulence created in the water as it enters the non-return valve 1.
  • a plurality of spaced apart resiliency deformable flanges 7 extends outwardly from the side wall 5.
  • the flanges 7 have a diameter slightly larger than the pipe.
  • the non-return valve 1 is pushed into the pipe friction between the pipe wall and the flanges 7 deforms the flanges 7 towards the exit port 4. Once deformed the flanges 7 resist removal of the non-return valve 1 from the pipe.
  • the use of such flanges 7 makes the non-return valve 1 suitable for use with pipes of a plurality of different diameters, typically in the range 96mm to 110mm.
  • the non-return valve 1 further comprises a lid 8.
  • the lid 8 is elliptical in plan view and is slightly domed in side view as shown. Connected to the edge of the lid 8 is a connection arm 9. This is in turn connected to a pivot 10 extending from the side wait 5.
  • the lid 8 can be displaced between open and closed configurations. In the open configuration (as shown in figure 1) the lid 8 is spaced apart from the exit port 4. Water which enters the entrance port 3 is free to flow through the non-return valve 1 and out the exit port 4.
  • first and second locking arms 11 Pivotally connected to the edge of the lid 8 are first and second locking arms 11. As can be best seen in figure 2 the two locking arms 11 are arranged on opposite sides of the lid 8 and share a common pivot axis. Each locking arm 11 comprises a hook 12 the purpose of which is described below. Extending from the side wall 5 of the tubular member 2 adjacent to each locking arm pivot 13 is an engagement mechanism 14. In this embodiment the engagement mechanism 14 is an elliptical protrusion 14. Each locking arm 11 can be pivoted about its associated pivot 13 with respect to the lid 8 between locking and unlocking positions. The locking arm 11 is shown in the unlocking position in figure 1. Extending between the locking arms 11 is a locking arm bar 15. The locking arm bar IS is slightly curved as shown so that when the locking arms 11 are in the unlocked position the locking arm bar 15 closely fits against the domed top of the lid 8.
  • FIG 2 Shown in figure 2 is the non-return valve 1 of figure 1 with the lid 8 pivoted from the open to the closed position.
  • the pivot axis of the lid 8 is parallel to the pivot axis of the locking arms 11.
  • the locking arms 11 are still in the unlocked position remote from the engagement means 14.
  • the non-return valve 1 is installed in the pipe with the lid pivot 10 uppermost so that the lid 8 is moved in a vertical plane between open and closed positions. When installed in this orientation the lid 8 will naturally drop into the closed position as shown. Because the exit port 4 is inclined to the length axis 6 the weight of the lid 8 will keep the lid 8 urged into abutment with the exit port 4 so forming a seal between the two.
  • FIG. 3 shows the non-return valve 1 with the lid 8 locked closed.
  • the locking arms 11 have been rotated about their pivots 13 with respect to the lid 8 from the unlocked position to the locked position.
  • the hook 12 on each arm 11 engages with the corresponding protrusion 14 on the side wall 5 so locking the lid 8 closed.
  • the hook 12 is shaped such that as the locking arm 11 rotates to the locking position it is urged against the protrusion 14 firmly pulling the lid 8 closed.
  • the locking arms 11 are rotated to the locking position by placing one or more fingers under the locking arm bar 15 and lifting it until it is substantially normal to the lid 8 as shown. As the locking arm bar 15 reaches the normal position the edge of the locking arm bar 15 is received in protrusions 16 which extend from the outer domed face of the fid 8. The protrusions 16 maintain the locking arm bar 15 in this position and prevent it from dropping back to its original position so unlocking the lid 8.
  • each engagement mechanism 14 is a protrusion 14.
  • the engagement mechanism 14 could for example be a slot into which the locking arm 11 is received.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
  • Valve Housings (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

L'invention concerne un clapet de non-retour (1) comprenant : un élément tubulaire (2) pour l'insertion dans un tuyau, l'élément tubulaire comprenant un orifice d'entrée (3), un orifice de sortie (4) et une paroi latérale (5) qui s'étend entre ceux-ci ; un couvercle (8) relié de manière pivotante à l'élément tubulaire et adapté pour pivoter autour d'un axe de pivotement entre une position ouverte éloignée de l'orifice de sortie et une position fermée recouvrant l'orifice de sortie ; au moins un mécanisme de mise en prise (14) qui s'étend depuis la paroi latérale à proximité de l'orifice de sortie ; au moins un bras de verrouillage (11) relié au couvercle au moyen d'un pivot (13), le bras de verrouillage étant adapté pour pivoter par rapport au couvercle autour d'un axe de pivotement entre une position déverrouillée et une position verrouillée. Le bras de verrouillage est disposé de telle sorte que lorsque le couvercle est fermé et le bras de verrouillage se trouve dans la position verrouillée, le bras de verrouillage vient en prise avec le mécanisme de mise en prise.
PCT/GB2016/051800 2015-06-22 2016-06-16 Clapet de non-retour Ceased WO2016207611A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1510974.7 2015-06-22
GB1510974.7A GB2539660B (en) 2015-06-22 2015-06-22 A non-return valve

Publications (1)

Publication Number Publication Date
WO2016207611A1 true WO2016207611A1 (fr) 2016-12-29

Family

ID=53784340

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2016/051800 Ceased WO2016207611A1 (fr) 2015-06-22 2016-06-16 Clapet de non-retour

Country Status (2)

Country Link
GB (1) GB2539660B (fr)
WO (1) WO2016207611A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108302246A (zh) * 2017-01-13 2018-07-20 科赛尔股份公司 用于管形套壳体的盖系统
AT519656A4 (de) * 2017-05-10 2018-09-15 Adeva Gmbh Rückstauvorrichtung für Rohrleitungen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1367911A (en) * 1920-06-01 1921-02-08 Charles C Koplin Stopcock and check-valve
GB325892A (en) * 1928-12-03 1930-03-03 Automatic Sprinkler Co Improvements in valves

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0913189D0 (en) * 2009-07-29 2009-09-02 Icyy Ltd Anti-flood valve mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1367911A (en) * 1920-06-01 1921-02-08 Charles C Koplin Stopcock and check-valve
GB325892A (en) * 1928-12-03 1930-03-03 Automatic Sprinkler Co Improvements in valves

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108302246A (zh) * 2017-01-13 2018-07-20 科赛尔股份公司 用于管形套壳体的盖系统
AT519656A4 (de) * 2017-05-10 2018-09-15 Adeva Gmbh Rückstauvorrichtung für Rohrleitungen
AT519656B1 (de) * 2017-05-10 2018-09-15 Adeva Gmbh Rückstauvorrichtung für Rohrleitungen

Also Published As

Publication number Publication date
GB201510974D0 (en) 2015-08-05
GB2539660A (en) 2016-12-28
GB2539660B (en) 2019-08-28

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