BE366431A - - Google Patents

Info

Publication number
BE366431A
BE366431A BE366431DA BE366431A BE 366431 A BE366431 A BE 366431A BE 366431D A BE366431D A BE 366431DA BE 366431 A BE366431 A BE 366431A
Authority
BE
Belgium
Prior art keywords
dust
grooves
contact surfaces
contact
desc
Prior art date
Application number
Other languages
French (fr)
Publication of BE366431A publication Critical patent/BE366431A/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/42Valve seats

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  "Dispositif pour surfaces de contact d'organes obturateurs et guides d'organes mobiles". 



   Dans la marche de moteurs et d'appareils dans les- quels on utilise des substances pulvérulentes ou contenant des poussières, il risque de se fixer de la poussière entre les surfaces de contact des organes obturateurs ou entre les par- ties mobiles et leurs guides, etc. ce qui provoque des dé- fauts d'étanchéité des soupapes ou organes de fermeture, ou des coincements, des échauffements et des blocages des par- ties mobiles dans leurs guides. 



   On a cherché à éliminer ces inconvénients en don- nant une forme tranchante aux surfaces de contact des sou-   @   

 <Desc/Clms Page number 2> 

 papes et en employant des procédés de nettoyage ou de balayage spéciaux des surfaces de contact et de guidage. 



   Or on a trouvé que les perturbations mentionnées ci-dessus qui se produisent aux surfaces de contact et de guidage, etc., peuvent être évitées de façon simple lors- qu'on subdivise ces surfaces par des rainures dans lesquelles la poussière qui pourrait pénétrer peut se fixer, sans entra- ver le fonctionnement des organes en question. Cela suppose une disposition rigide des côtes entre chacune des rainures. 



   La figure 1 représente schématiquement à sa partie inférieure un mode d'exécution du présent procédé appliqué à une soupape tronconique 1, dont le siège 2 présente les rainures 3 dans lesquelles la poussière qui pourrait se trouver entre les surfaces de contact peut se déposer lors de la fermeture, sans nuire à l'étanchéité. On peut naturel- lement ménager des rainures aussi dans le plateau de la sou- pape ou seulement dans cet organe. 



   Un deuxième mode d'exécution du présent procédé est représenté schématiquement à la partie supérieure de cette même figure, au passage de la tige de la soupape dans un guide muni d'un presse-étoupe. La tige de la soupape 1 est guidée par la douille 4 qui présente des rainures 5 dans le sens de l'axe (voir coupe A-B Figure II), dans lesquelles la poussière qui pourrait avoir pénétré peut se fixer sans gêner en aucune façon le travail de la soupape.



   <Desc / Clms Page number 1>
 



  "Device for contact surfaces of obturator members and guides of movable members".



   In the operation of engines and devices in which powdery or dust-containing substances are used, there is a risk of dust settling between the contact surfaces of the shut-off members or between the moving parts and their guides, etc. which causes leaks in the valves or closing members, or jamming, heating and blocking of the moving parts in their guides.



   An attempt has been made to eliminate these drawbacks by giving a sharp shape to the contact surfaces of the supports.

 <Desc / Clms Page number 2>

 papes and employing special cleaning or sweeping methods of the contact and guide surfaces.



   However, it has been found that the above-mentioned disturbances which occur at the contact and guide surfaces, etc., can be avoided in a simple way when these surfaces are subdivided by grooves into which the dust which could penetrate can. settle down, without hindering the functioning of the organs in question. This assumes a rigid arrangement of the ribs between each of the grooves.



   FIG. 1 diagrammatically shows in its lower part an embodiment of the present method applied to a frustoconical valve 1, the seat 2 of which has the grooves 3 in which the dust which could be found between the contact surfaces can be deposited during closure, without compromising the seal. Of course, grooves can also be made in the valve plate or only in this member.



   A second embodiment of the present method is shown schematically in the upper part of this same figure, where the valve stem passes through a guide provided with a stuffing box. The valve stem 1 is guided by the sleeve 4 which has grooves 5 in the direction of the axis (see section AB Figure II), in which the dust which may have penetrated can be fixed without in any way hindering the work. of the valve.


    

Claims (1)

R E S U M E -:- ----------- L'invention concerne un dispositif pour surfaces de contact d'organes obturateurs, surfaces de guidage, d'or- <Desc/Clms Page number 3> ganes mobiles etc., exposés à l'accès de poussière, caracté- risé par une subdivision de ces surfaces rigides par des rainures dans lesquelles la poussière peut se déposer. ABSTRACT -:- ----------- The invention relates to a device for contact surfaces of obturators, guide surfaces, or- <Desc / Clms Page number 3> movable ganes etc., exposed to the access of dust, characterized by a subdivision of these rigid surfaces by grooves in which dust can deposit.
BE366431D BE366431A (en)

Publications (1)

Publication Number Publication Date
BE366431A true BE366431A (en)

Family

ID=38573

Family Applications (1)

Application Number Title Priority Date Filing Date
BE366431D BE366431A (en)

Country Status (1)

Country Link
BE (1) BE366431A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327471A1 (en) * 1975-10-08 1977-05-06 Kureha Chemical Ind Co Ltd FLOW ADJUSTMENT VALVE FOR HOT BITUMEN OR OTHER HIGHLY VISCOUS LIQUID
FR2423425A1 (en) * 1978-04-22 1979-11-16 Bergwerksverband Gmbh GAS-TIGHT SHUTTER DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327471A1 (en) * 1975-10-08 1977-05-06 Kureha Chemical Ind Co Ltd FLOW ADJUSTMENT VALVE FOR HOT BITUMEN OR OTHER HIGHLY VISCOUS LIQUID
FR2423425A1 (en) * 1978-04-22 1979-11-16 Bergwerksverband Gmbh GAS-TIGHT SHUTTER DEVICE

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