Classifications

• • 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
  • F16K1/00—Lift 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
  • F16K1/32—Details
  • F16K1/34—Cutting-off parts, e.g. valve members, seats
  • F16K1/46—Attachment of sealing rings
• • 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
  • F16K1/00—Lift 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
  • F16K1/16—Lift 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 with pivoted closure-members
  • F16K1/18—Lift 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 with pivoted closure-members with pivoted discs or flaps
  • F16K1/22—Lift 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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
  • F16K1/226—Shaping or arrangements of the sealing
  • F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
  • F16K1/2265—Shaping or arrangements of the sealing the sealing being arranged on the valve seat with a channel- or U-shaped seal covering a central body portion
• • 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
  • F16K1/00—Lift 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
  • F16K1/16—Lift 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 with pivoted closure-members
  • F16K1/18—Lift 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 with pivoted closure-members with pivoted discs or flaps
  • F16K1/22—Lift 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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
  • F16K1/226—Shaping or arrangements of the sealing
  • F16K1/2268—Sealing means for the axis of rotation

Definitions

• the invention relates to a seal on a disc valve, also called flap valve, which is used to control the passage of
• Valves of this type very often consist of a flange connection with valve flap and a sealing collar of an elastomeric material, which is suitable for both the static flange seal as well as for the
• the sealing collar takes over all three sealing functions and also prevents a backward migration of the sealing sleeve by the liquid. A compromise is made between tightness, service life and the switching forces on the switching axis.
• the sealing collar is pressed axially by flanges, whereby both the static seal on the flanges and the dynamic seals on the
• Valve pulley and be specified on the switching axis.
• the disadvantage here is that when contraction of the flanges all four sealing functions be recorded at the same time. There is also the danger that the sealing sleeve is torn out of its holder.
• Sealing collar which is essentially elliptical shaped, so that the
• Friction and wear in the cross passages are reduced.
• the service life of the valve is increased, which also with a
• the object of the invention is to provide a seal which has a long service life with best sealing functions. It should be manufactured with lower tolerances and safely inserted in its holder. In addition, a torque reduction to the switching axis should be achieved.
• Sealing functions can be optimized independently of each other.
• the sealing function of the static flange seal can be made separately from the sealing function of the dynamic disc seal. This allows a firm static clamping of the seal, which is a tearing out impossible.
• the seal can be arranged to form displacement chambers that can accommodate manufacturing tolerances and thermal strains. In addition to this
• Sealing functions on the dynamic shaft seals must also be carried out separately from the sealing functions of the static flange seal and the dynamic disc seal.
• valve flap In the structural design of the valve flap its per se known structure is maintained.
• the valve flap and the switching axis form a unit and are made of metal.
• At the Heidelbergachs die Replacementen the valve flap is provided with a sealing contour or thickening.
• the sealing collar is formed from a central part for the dynamic disc seal and from radially over the hinge-like transitions to the central part subsequent radially projecting annular edges for the static flange.
• a comprehensive comprehensive sealing sleeve carrier ring is inserted, which rests with its outer edge on the ring edges and supports with its inner surface, the middle part of the sealing sleeve.
• Switching axis is.
• the hinge-like transition is formed so that when compressing the annular edges of the sealing sleeve no flow of force is transmitted to the middle part of the sealing sleeve.
• Sealing collar in turn is supported on the inner surface of the carrier ring.
• Flange sealing is also prevented here by the transitions from the middle part to the protruding ring edges.
• the preferred embodiment of the invention provides for an embodiment of the sealing collar, in which annular groove-like depressions are introduced between the middle part and the respective annular edges of the sealing collar.
• ring supports of the carrier ring are used, wherein the support ring is formed accordingly. He has on its outer edges inwardly facing ring supports, which are similar in shape to the shape of the depressions in the sealing sleeve.
• the annular supports abut with their axial outer surfaces on the axial inner surfaces of the annular edges of the sealing sleeve and form the counter supports in the static flange seal.
• the flanges themselves, as in the previous simple embodiment, slightly tapered inwardly on their surfaces opposite the ring or ring supports. Between the ring supports is the middle part of
• the middle part is located on the inner surface of the carrier ring. In all embodiments, it is advantageous that the middle part a radially outwardly curved
• Outer surface has. It is advantageous if this outer surface is provided with a flat-shaped portion which comes to rest on the inner bottom of the carrier ring.
• the dynamic disc seal is determined in its effect mainly by the selected thickness of the central part in its planar section. It is also advantageous if the annular edges of the sealing collar are formed bead-shaped at their radially outer end portions. These end portions protrude into grooves which are formed in the axial wall surfaces of the flanges, the end portions being provided with undercuts with which they come to rest on the radially inner groove walls of the flanges. As a result, a very good backup of the sealing sleeve is achieved against tearing. Moreover, it is possible to accommodate in the free corners between the end portions and the groove walls compensation zones for thermally induced expansions of the end portions.
• the switching axis of the valve disc is held in coaxial, opposing openings in the carrier ring.
• the axis is covered and sealed by the middle part of the cuff. This seal is made by a formed on the sealing sleeve spigot, which spans the switching axis and on the inner surfaces sealing contours are attached. With its axial outer surface of the nozzle attaches to the bottom of the carrier ring.
• Switching axis is achieved by decoupling sockets, which are inserted in annular grooves in the nozzle. These nozzles lie with their end faces in the areas of the sealing surfaces between the middle part of the sealing sleeve and the sealing beads on the switching axes.
• the stubs are housed in the annular grooves and arranged so that the force-resultant, from the
• the switching axis is held by guide bushes.
• These guide bushes can be inserted, for example, in the decoupling sockets.
• the carrier ring is divided in the middle. This can be done for example perpendicular to the ring plane, so that two
• Ring halves arise.
• the carrier ring is divided in the middle in its ring plane.
• the Achslagerung is cut in the middle, which is advantageous in the assembly.
• the nozzle or guide bushes may consist of two halves. To the split
• a overlapping guide is provided in the parting plane, consisting of a protruding ring member on a
• Sub-carrier ring and a corresponding annular receptacle for the ring member on the other sub-carrier ring consists. Composed, the sub-rings are aligned with each other. This also has a favorable effect on the flanges, which are also centered when pushed onto the seal.
• Figure 1 shows a longitudinal section through one side of the seal in its basic simple embodiment, in which the static flange seal when using a single sealing sleeve regardless of dynamic seals on the disc and on the switching axis,
• the seal has a carrier ring with ring supports
• FIG. 1 schematically shows a section through the sealing arrangement 1, which consists of the sealing collar 3, the flanges 4 and 5 of FIG
• the sealing collar 3 is composed of the central part 11 and the radially outwardly projecting annular edges 12, which are connected to the central part 11 via the hinge-like transitions 13.
• the static flange seals 14 are achieved by the inwardly slightly tapered conical surfaces 15 of the flanges 4 and 5 press the ring edges 12 against the outer edges 16 of the support ring 9.
• the annular edges 12 are bead-shaped at their radially outer end portions 17
• the end parts 17 have the Undercuts 19, with which they rest against the radially inner groove walls of the flanges 4, 5.
• the free corners 20 between the end parts 17 and the groove walls form compensation zones for thermally induced expansions of the end parts 17.
• the part support rings 7, 8 have in the parting plane 21 an overlapping guide 22, which centers the part carrier rings 7, 8 and the flanges 4, 5 result.
• the guide 22 consists of the protruding ring member 23 on the sub-carrier ring 7 and the corresponding annular receptacle 24 for the ring member 23 on the sub-carrier ring 8.
• Embodiment of the seal are the static flange seals 14 of the dynamic seals on the valve disc 10 and at the
• Figures 2 and 3 show the sealing sleeve 3, in which between the middle part 11 and the respective annular edges 12 groove-like recesses 25 are present.
• the sealing collar 3 is likewise surrounded by a metal carrier ring 29, which consists of the partial carrier rings 27, 28.
• the support ring 29 has at its outer edges 30 ring supports 31 which engage in the recesses 25 of the sealing sleeve 3.
• the annular supports 31 lie with their axial outer surfaces 32 on the axial inner surfaces 33 of the
• Ring supports 31 opposite.
• the axial outer surfaces 34 of the central part 11 abut against the axial inner surfaces 35 of the ring supports 31.
• Sealings 14 can be achieved. It is also possible to make the end parts 17 larger.
• the middle part 11 of the sealing collar 3 has a radially outwardly curved outer surface 39. This outer surface 39 is provided with the newly formed section 37. The latter rests against the inner bottom 38 of the carrier ring 29.
• the dynamic disc seal is determined in its effect by the selected thickness 36 of the central portion 11 in the flat portion 37.
• valve flap 10 and the indexing shaft 40 is a unit made of metal.
• the valve flap 10 has on the Wennachs die entryen a dome-shaped sealing contour 41st Die
• Switching shaft 40 is held in a conventional manner in coaxial opposing openings 42 in the carrier ring 9 and 29 respectively.
• FIG. 5 shows a section through the sealing of the switching axis 40.
• the sealing sleeve 3 has a switching axis 40 spanning
• Formation 43 whose inner surface is provided with the sealing bead 44.
• the formation 43 rests with its axial outer surface 46 at the bottom 38 of the carrier ring 9 and 29 at.
• the opposite opening for the switching axis 40 has a comparable structure with respect to the sealing function.
• an embodiment is shown, in which also the
• a decoupling bushing 50 is inserted into the formation 43 of the sealing collar 3, into the annular groove 51, which has been introduced into the formation 43 of the sealing collar 3. With its projecting end 52, the decoupling bushing 50 is located in the sealing area between the middle part 11 of the sealing collar 3 and the sealing contour 41.
• both sockets 50 and 56 may be separated in half-plane also in their median plane.
• FIGS. 7a and 7b show a carrier ring 29 which is separate in its center plane into two partial carrier rings 27, 28.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Lift Valve (AREA)
• Sealing Devices (AREA)
• Gasket Seals (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Family Cites Families (23)

• 2012
  • 2012-01-10 DE DE102012000257A patent/DE102012000257A1/de not_active Ceased
  • 2012-10-25 WO PCT/EP2012/004464 patent/WO2013104380A1/de active Application Filing
  • 2012-10-25 EP EP12794174.8A patent/EP2802797A1/de not_active Withdrawn
  • 2012-10-25 CN CN201280066729.8A patent/CN104040232B/zh active Active
  • 2012-10-25 US US14/371,007 patent/US9383022B2/en active Active

Non-Patent Citations (2)

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