WO1993010383A1 - Robinet a boisseau spherique - Google Patents

Robinet a boisseau spherique Download PDF

Info

Publication number
WO1993010383A1
WO1993010383A1 PCT/EP1992/002625 EP9202625W WO9310383A1 WO 1993010383 A1 WO1993010383 A1 WO 1993010383A1 EP 9202625 W EP9202625 W EP 9202625W WO 9310383 A1 WO9310383 A1 WO 9310383A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball
ball valve
casing
valve according
housing
Prior art date
Application number
PCT/EP1992/002625
Other languages
German (de)
English (en)
Inventor
Josef Nemetz
Original Assignee
Josef Nemetz
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 Josef Nemetz filed Critical Josef Nemetz
Publication of WO1993010383A1 publication Critical patent/WO1993010383A1/fr

Links

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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0657—Particular coverings or materials
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs

Definitions

  • the invention relates to a ball valve in a one-piece metallic or made of another suitable material housing in which a ball connected to a control shaft is provided as a shut-off element, the ball and in part also the control shaft are coated with plastic, the plastic covering the peripheral surface of the Ball and partly also enclosing the control shaft, the ball with the control shaft can be rotated in the plastic casing and the plastic casing, which also serves as a seal with respect to the ball, is pressed against the ball by spring force in the sealing area of the input and output sides.
  • Ball valves of this type are required, for example, in the food industry in order to avoid deposits in dead spaces. Ball valves of this type are also used in the paint industry to avoid contamination and sticking. Also in chemistry e.g. in the case of polymerizing media, since with such media the remaining media residues can stick in the dead spaces. Or for media that require a high degree of purity.
  • Ball valves of the type mentioned are known from P 35 46 345.7 and P 38 41 026.5, in which the ball is enclosed with a control shaft by a lining located in the housing and anchored there, an elastic insert in the inlet and outlet area of the fitting in each case the ball is located between the liner and the housing. Except for the stuffing box arrangement, all parts are connected to one unit via the lining. Due to the flange connection, pressure forces in the flow direction are conveyed via the elastic insert to the lining in order to achieve the tightness.
  • the object of the present invention is to provide a ball valve of the type mentioned which is easy to repair, does not require a counter flange when used as an end fitting within a system and has an improved sealing arrangement and thus a longer service life. Furthermore, the ball valve should be easy to manufacture and assemble. Anchoring of the plastic sheathing should be possible if necessary. This is necessary in particular in the case of larger nominal widths, since otherwise the shut-off element or the ball can hook into the lining with the edge of the passage during the switching operations. This can damage the lining or the torque increases to an impermissible size. The seal to and / or on the selector shaft should also be improved.
  • the invention is essentially achieved in that elastic inserts are inserted vertically or at another angle, which is still acceptable for the invention, to the direction of flow of the medium on the plastic-coated ball with switching shaft after the coating process and pressed against the sealing areas.
  • the casing here has a largely uniform wall thickness of suitable thickness.
  • a first solution provides for the ball valve of the type mentioned that the ball is coated with a control shaft with plastic, in particular with a fluoroplastic r, in such a way that it is used as an insert in a housing perpendicular to the flow axis or in another angle which is still acceptable for the invention can be.
  • the plastic sheath forms coaxial to the control shaft above and below the flow level, but separated from the flow of the medium, each an annular space in which the elastic inserts are arranged.
  • the annular space which is not tied to any specific geometric shape in cross section, can be formed by a closed jacket which with the jacket at least in the area of the inlet and outlet opening in is a firm connection and is therefore made in one piece with the sheathing made of plastic.
  • the annular space can also be formed by wings which are arranged on the casing in the area of the inlet and outlet opening for sealing against the housing and the recess in the housing in which the insert is arranged.
  • the plastic sheathing is largely carried out, in particular on the peripheral surface of the ball, in the same wall thickness in a thickness suitable for sealing.
  • the ball with control shaft is rotatably arranged in the casing.
  • the elastic inserts are pressed against the plastic sheathing and thus against the sealing areas of the ball with the control shaft and the housing by means of a centrally arranged flange cover, a threaded insert for tensioning, a pressure piece, a pressure screw or by means of a similar device.
  • the insert consisting of the plastic-coated ball with control shaft or other parts, can be replaced individually.
  • the insert is expediently arranged in a cylindrical recess in the housing. This recess can also be provided as a through hole. In this case, a lid can be arranged at the top and bottom. But a conical recess would also be possible. Then the insert on the outer jacket would be conical.
  • the sheathing of the ball with the control shaft also covers the housing from the entrance to the exit.
  • the elastic inserts are retrofitted in the same arrangement. This requires a flange cover or similar on the top and bottom of the housing. By including the housing in the casing, the corrosion protection for the housing is increased and a less noble material can be selected for the housing. If a repair can be remedied using the elastic inserts, the repair is also possible in this embodiment when the valve is installed. In a further embodiment of the invention, the sealing area and thus the service life are to be improved.
  • the elastic insert comes into effect all around or almost all around the peripheral surface of the ball and thus the sheathing both in the entry and exit area as well as in the right angle or in a locked and unlocked state of the fitting another intermediate position is pressed against the ball surface and thus around the sealing area of the passage of the ball via the elastic insert, in that grooves or grooves or at least one groove or groove either on the ball outside the passage sealing area and / or in the sealing area of the selector shaft to be ordered. These grooves or grooves are filled in by the sheathing, which receives pressure from the elastic insert. The number and shape of the grooves or grooves has no influence on the invention.
  • the elastic insert can also be pressed on in an adjustable manner.
  • At least one anchoring lug on the sheathing in the area of the passage of the shroud if the shroud is in the locked state of the fitting, for example running out tangentially to the sheathing can be provided in the webs or forks which are arranged, for example, on a pressure piece or on the flange cover , intervene. This is particularly useful if the annular space for sheathing over wings is the one on the sheathing in the area of the inlet and outlet opening Sealing are arranged relative to the housing and the recess of the housing is formed.
  • the invention is not tied to any particular type of connection in the housing.
  • the housing of the ball valve can e.g. be designed on the connection side in flange, welded socket or threaded design, with adhesive sleeves or in any other design. It is also possible to have a very short design as a compact fitting as well as a correspondingly long design.
  • the actuator for the valve can be manually or power operated, e.g. can be provided via a pneumatic or electrical drive or the like.
  • the housing can be made of different metallic materials such as in stainless steel or from a plastic suitable for the respective application. When using a plastic housing, it makes sense to provide a metallic reinforcement in the plastic wall in the central area of the housing in order not to run the risk of the plastic wall giving way when the insert is braced. In the case of metallic materials, it can also be lined with a suitable plastic, in particular a fluoroplastic, in order to improve the corrosion resistance.
  • a fluoroplastic such as e.g. PTFE or PFA suitable because of the high corrosion and temperature resistance and the favorable sliding properties.
  • PTFE polymethyl methacrylate
  • PFA polymethyl methacrylate
  • other plastics can also be provided for this.
  • Pure graphite is well suited for elastic inlays due to its high temperature resistance and permanent elasticity within a certain range.
  • Suitable elastomers such as Viton, silicone rubber or other suitable elastomers or a metallic spring element can also be provided.
  • a plastic intermediate element between the pressure piece and the sheathing is expedient for adaptation to the surface of the sheathing.
  • the elastic inserts provided as a spring member are provided as separate inserts. However, they can also be injected into the annular space, for example if a suitable elastomer is used. Here they are then expediently designed as one-piece deposits.
  • a suitable stainless steel, Hastelloy, titanium, ceramic or another suitable material can be provided for the ball with the switching shaft. It is also possible to design a ball with a coating that adheres to the ball with the selector shaft, e.g. if this has a correspondingly higher processing temperature than the casing which also serves as a seal. Or the e.g. Metallic ball is removed after the casing has been made using a heating process at a suitable temperature and a shut-off element is used as a ball or as a ball with a laterally open passage or a C-shaped ball with a casing that adheres to the shut-off element. The ball can also be flattened outside the sealing area of the passage on the upper and lower half, so that it has a barrel shape.
  • the ball can also be designed with a bearing journal opposite to the selector shaft. It is useful if the ball is made in one piece with the control shaft. However, it can also be made in two parts and coupled in a form-fitting manner in such a way that the rotatability within the casing remains perfectly guaranteed.
  • the passage of the ball is not tied to any particular shape. He can e.g. be round, oval, rectangular or triangular. The passage can also be open on the side, so that the ball has a C-shape.
  • the ball valve can also be designed as a multi-way valve.
  • FIG. 1 shows a ball valve according to the invention with a telter ball and selector shaft, with elastic inserts and sealing grooves in the selector shaft area;
  • Figure 2 shows a section A-A of Figure 1 in different versions
  • Figure 3 shows a section B-B of Figure 2 in different versions
  • Figure 3a shows a section C-C of Figure 3
  • Figure 4 shows a ball valve according to the invention with specially shaped elastic inserts
  • Figure 5 shows a ball valve according to the invention in which the pressure piece is threaded (right half of the figure) and on the left half of the figure, the ball has a lower bearing journal;
  • FIG. 6 shows a ball valve according to the invention with sealing grooves in the ball and switching shaft area
  • FIG. 7 shows a ball valve according to the invention with a lined housing
  • Figure 8 shows a ball valve according to the invention in which the sheathed ball with switching shaft is inserted from below into the housing;
  • FIG. 9 shows a ball valve according to the invention in which wings are provided instead of the outer jacket
  • Figure 9a shows a ball valve like Figure 9, but the wings are connected by a wall;
  • FIG. 10 shows further details of a ball valve according to the invention, in particular with regard to the elastic inserts and various sealing options and
  • Figure 11 shows a ball valve with anchoring lugs.
  • Figure 1 shows a ball valve in a one-piece housing 1 with inlet and outlet opening la and Ib. Since the ball valve is not tied to any particular connection type, the inlet and outlet openings la, 1b are not fully designed.
  • the housing 1 has a cutout 2 in the central region of the housing 1 or between the access opening 1 a and the outlet opening 1 b. In this recess
  • the bullet 2 is an insert consisting of a ball 3 with a switching shaft 4, which are provided with a casing 5.
  • the passage 3a of the ball 3 has a passage 3a which, in the open position of the fitting shown, in which the medium can flow, the access opening la connects to the outlet opening 1b of the housing 1.
  • the axis of the passage 3a of the ball 3 is perpendicular to the axis of the access opening la or outlet opening lb. If the flow rate of the medium is to be regulated, the passage 3a of the ball 3 assumes an intermediate position between "open” and "closed”.
  • the plastic sheathing 5 forms an annular space 5a coaxially to the control shaft 4 above and below the flow level or on the upper and lower half of the ball 3.
  • the casing 5 lies on the entire peripheral surface of the ball 3 and on a partial area of the control shaft 4.
  • the sheathing 5 is present on the selector shaft 4 at least in the housing area.
  • the casing 5 takes on the sealing function with respect to the control shaft 4.
  • a trapezoidal groove 4a and a sawtooth-shaped groove 4b are provided.
  • the sawtooth-shaped groove 4b can also be designed in opposite directions, ie with the tip pointing towards the ball 3.
  • These grooves are filled by the casing 5.
  • the shape of these grooves can also be different.
  • the number of grooves can be selected as required.
  • the grooves can also be omitted entirely.
  • the valve can also be equipped with a downstream stuffing box if required.
  • the outer jacket 5c of the annular space 5a lies with its outer jacket surface against the wall of the recess 2.
  • the partial areas 5b of the casing 5 of the inlet and outlet opening la, lb connect the outer casing 5c to the casing 5 on the peripheral surface of the ball 3.
  • a further connection of the outer casing 5c to the casing 5 on the peripheral surface of the ball 3 can be achieved by a corresponding stiffening in the area of the anchoring, as will be described later in FIG. 2.
  • the annular space 5a is thus separated from the medium by the statically stressed seal between the outer jacket 5c and the wall of the recess 2 of the housing 1.
  • the seal between the casing 5 and the peripheral surface of the ball 3 is subject to dynamic stress.
  • a seal to the control shaft 4 can be achieved in any intermediate position from “on” and “to” the fitting.
  • a sleeve 5e is arranged in each of the partial areas 5b of the casing 5 in the inlet and outlet openings 1a, 1b. In the left half of FIG. 1, this extends from the inside diameter or from the wall of the recess 2 of the housing 1 to almost the ball 3. In this case, the end face of the sleeve 5e facing the housing 1 is the inside diameter of the recess 2 customized. In the right half of FIG.
  • the side of the sleeve 5e facing the housing 1 is provided with a straight end face and thus does not extend over the full length between the ball 3 and the wall of the recess 2.
  • the positioning during the casing process of the sleeve 5e can be made sensibly at the two points that find their limitation on the wall of the recess 2 of housing 1.
  • these sleeves 5e serve, in particular in the case of larger nominal diameters, to support the casing 5 in the partial areas 5b against the pressing forces acting on the elastic inserts 6 and, on the other hand, the closer they are to the ball 3 with the end face lying towards the ball 3.
  • sleeve 5e side of the sleeve 5e can also be brought in — slightly sliding contact also possible on the ball 3 — as a protective edge for the sheathing 5 in the case of abrasive media. Because of the chemical resistance, it is useful, provided sleeves 5e are provided, to provide the same material for them as for ball 3 with shaft 4.
  • two ring halves can also be arranged in the annular space 5a between the elastic inserts 6 and the sheathing 5 in the partial areas 5b or in these areas during the sheathing process a ring can be embedded or arranged for reinforcement, as will be described later in FIG. 5.
  • a pressure piece 8 is arranged, which is secured against rotation via pin 9.
  • Pin 9 engages in the bottom of the housing 1 and in the pressure piece 8. Securing against twisting is necessary above all if the pressure piece 8 also serves to anchor the casing 5, as will be described later in FIG. 3a.
  • the pressure piece 8 can be omitted if the bottom of the housing 1 is designed with the same shape. Outside of the elastic insert 6, there should be a small gap 10 between the casing 5 and the pressure piece 8, likewise in the opposite direction in the upper half of the annular space 5a between the casing 5 and the flange cover 7 in order to overdetermine and thus an undesirably high pressure between the casing 5 and the ball 3 avoid.
  • O-rings 11 can additionally be arranged to seal the outer casing 5c of the annular space 5a against the wall of the recess 2 of the housing 1.
  • the flange cover 7 has, in the area of the selector shaft 4, a coaxial clearance 12 with a shoulder 12a which is at a distance from the selector shaft 4.
  • An elastic or permanently elastic material such as pure graphite is inserted into this recess 12, which is expediently pressed together via the connecting flange 13 until the required sealing of the control shaft 4 is achieved.
  • the casing 5 is also pressed against the surface of the grooves 4a, 4b at the same time, whereby an improvement in the sealing is achieved.
  • the connecting flange 13 is fastened to the flange cover 7 by means of screws 13a and is provided in the area of the selector shaft 4 with a bearing sleeve 13b, for example made of a solidified PTFE material.
  • the end face of the connecting flange 13, which faces the square 4c of the selector shaft 4, also serves to accommodate drives.
  • the square 4c of the selector shaft 4 is suitable for both drives and hand levers.
  • FIG. 2 shows the section AA of FIG. 1.
  • the left half of FIG. 2 shows a stiffening 5f as a connection between the outer casing 5c and the casing 5 on the peripheral surface of the ball 3.
  • This stiffening is expedient not all around, but only in a corresponding manner Size approximately at right angles to the direction of flow.
  • the elastic inserts 6 can abut one another on the end face in the remaining area and serve the sealing function.
  • the right half of FIG. 2 additionally shows webs 7b and 8a on the flange cover 7 or on the pressure piece 8, which engage in the form of anchoring in the stiffening 5f or only reach as far as the stiffening 5f.
  • These webs can also be stiffened accordingly, e.g.
  • FIG. 3 shows the section BB of Figure 2 in different Execution.
  • the left half of FIG. 3 shows the fitting with a round recess 2 in the housing 1 and a correspondingly designed insert, consisting of a ball 3 with a casing 5, an outer casing 5c and the insert 6 arranged in the annular space 5a.
  • the right half of FIG. 3 shows the valve with a recess 2 of the housing 1, which is flattened on the side facing the inlet and outlet opening la, lb.
  • the insert or the outer jacket 5c of the annular space 5a, in which the elastic insert 6 is arranged is flattened.
  • the housing 1 is expediently provided in a short version or in a compact design.
  • the elastic inserts 6 are adapted to the respective uses.
  • the recess 2 can also be flattened parallel to the direction of flow and the insert or casing 5 and thus the annular space 5a with inserts 6 can be designed accordingly.
  • FIG. 3a shows the section C-C of FIG. 3 with the possibility of anchoring.
  • This figure each shows a web 7b, 8a from the flange cover 7 or pressure piece 8, which formally engage in the stiffening 5f as anchoring.
  • the elastic inserts 6 meet outside of the stiffening 5f with their end faces 6b approximately in the plane of the flow axis.
  • FIG. 4 shows a ball valve with specially shaped inserts 6.
  • the wall thickness of the elastic inserts 6 is made more uniform, so that the pressing forces can have a better effect.
  • the side of the elastic insert 6 facing away from the ball 3 in the region of the ball 3 runs approximately parallel to the contour of the casing 5.
  • the outer legs 6a of the elastic insert 6 are designed to be correspondingly long in order to seal the outer casing 5c to enable the casing 5 in a wider area relative to the recess 2.
  • the legs 6a of the elastic insert 6 are expediently kept somewhat conical on the inside. But could also be cylindrical.
  • the sleeve 5e has a leg 51 toward the side of the ball 3 in the left half of the figure.
  • FIG. 5 shows in the left half of the figure a ball valve in which the ball 3 with the switching shaft 4 also has a lower bearing pin 4d. Securing against rotation of the insert, consisting of ball 3 with selector shaft 4 and sheathing 5, is achieved via flange 5d by tightening the same via flange cover 7. Tongue and groove can also be arranged in this area or, for example, serrations of shallow depth into which the flange 5d deforms.
  • the right half of the figure shows a threaded insert 15 instead of a flange cover 7.
  • groove 1c in the bottom of the housing 1 and corresponding spring 5g on the casing 5 are provided.
  • the outer casing 5c is provided on the side facing the wall of the recess 2 with two sealing grooves 5h each.
  • a threaded ring 14 for bracing the stuffing box insert for example made of pure graphite, is arranged in the cutout 12.
  • a reinforcing ring 5e ' is arranged in the left half of FIG. 5 between the elastic inserts 6 and the sheathing 5.
  • the reinforcing ring 5e 'on the side facing the elastic insert 6 is curved, for example, is designed obliquely or roof-shaped on one side or the other, as can be seen in the right half of FIG. 5, in order to reduce the pressing forces from the elastic insert 6 to act both against the casing 5 of the ball 3 and against the outer casing 5c of the annular space 5a or to have an increased effect on one side or the other.
  • FIG. 6 shows a ball valve similar to FIG. 1, except that a trapezoidal sealing groove 3b is already arranged in the area of the ball 3 located towards the control shaft 4 outside the sealing area located around the passage 3a of the ball 3.
  • An identical sealing groove 3b can also be arranged on the ball half opposite the selector shaft 4 in order to obtain a good seal to the lower bearing journal 4d. This can be useful, for example, if, due to a technical requirement, the lower bearing journal 4d is not to be designed or only to be partially covered.
  • FIG. 7 shows in the left half of the figure a ball valve similar to that in FIG. 1, but the housing 1 is provided with a lining 16.
  • This lining 16 suitably consists of a fluoroplastic such as e.g. PTFE, PFA, FEP or similar or from a plastic that offers sufficient corrosion protection against the medium.
  • the housing can also be provided with another corrosion-protecting material.
  • the insert, consisting of ball 3 with selector shaft 4 and casing 5, is interchangeable, as in the other figures described so far.
  • the casing 5 of the ball 3 also covers the housing 1. In this case, the outer casing 5c of the casing 5 on the wall of the recess 2 of the casing 1 can be omitted.
  • the elastic inserts 6 remain interchangeable. be designed without or with leg 6a, see upper and lower right half.
  • the recess 2 is without a bottom, i.e. designed as a continuous bore and provided with a cover 17. At the top of the recess
  • a flange cover 7 is arranged.
  • grooves can run radially or vertically in a partial area of the recess 2. If the grooves run vertically, the recess 2 is expediently stepped or it has a collar the width of the length of the grooves so that they can be economically produced, for example, by broaching or butting.
  • the lining 17 or the casing 5 can be anchored in the housing 1 at the other required points, for example using dovetail-shaped grooves.
  • the embodiment in which the recess 2 is designed without a bottom, ie as a continuous recess, is also favorable for a compact fitting, see FIG. 3, right half. Ball valves with upper and lower cover or with flange cover 7 and cover 17, as can be seen in the right half of FIG. 7, can of course also be provided in all other designs.
  • the recess 2 is then designed as a continuous recess without a floor, perpendicularly or at an angle to the flow axis that is still acceptable for the embodiment.
  • FIG. 8 shows a ball valve in which the insert, consisting of ball 3 with actuating shaft 4 and casing 5, is inserted into housing 1 from below.
  • a safeguard against twisting of the insert is provided both via groove 20a in connection with spring 5g of end cover 20 or sheathing 5 and via the bracing of flange 5d by end cover 20.
  • the cutout 12 in the housing 1 is provided with a shoulder 12a so that the axial pressure is absorbed when the stuffing box insert is braced.
  • the attachment of a mounting flange for a power-operated drive can be done with this type e.g. provide cheap on the cylindrical approach ld of housing 1.
  • a firmly formed flange can be provided for this in the area of the shoulder 1d of the housing 1.
  • FIG. 9 shows a ball valve in the horizontal section of the flow plane, in which only wings 5i are provided instead of the outer jacket 5c.
  • the annular space 5a is hereby formed via the wings 5i in connection with the recess 2 of the housing 1 and the casing 5.
  • the elastic inserts 6 arranged in the annular space 5a press the wings 5i against the wall of the recess 2 and seal the insert with respect to the inlet and outlet opening la, lb of housing 1 all around. Due to the lower rigidity of the wings 5i compared to a closed outer jacket 5c, the pressing forces of the elastic insert 6 are more effective.
  • anchoring is required, particularly in the case of larger nominal diameters, this can be carried out similarly to that shown in FIG intervene, for example, from the flange cover and / or pressure piece.
  • These noses can also be provided, for example, in area 5 over almost the entire height of the insert and connected to the casing 5 in a radius.
  • the anchoring carried out in this area can also serve as a safeguard against twisting of the insert at the same time by the engagement of, for example, webs or forks.
  • This design of the lugs also helps to fix the insert in the recess 2 of the housing 1 when the insert is designed with wings.
  • a lower bearing journal similar to that shown in FIG. 5, is useful for the fixation.
  • FIG. 9 shows the insert with wing 5i in an arc shape and the right half of FIG. 9 shows the insert with wing 5i in a straight design.
  • a thicker configuration of the elastic insert 6 results in the sealing area compared to the ball 3, which favors the sealing. Because of the narrow and space-saving design, this embodiment is particularly suitable for smaller nominal widths and those with a threaded connection.
  • FIG. 9a again shows a sectional view like FIG. 9.
  • the wings 5i are connected to one another by a wall 5k.
  • it makes sense to connect the wall 5k to the casing 5 approximately in the area 5j, so that a stiffening 5f results, similar to that described in FIG.
  • the annular space 5a is not tied to any specific cross-sectional shape. Securing against rotation of the insert in the recess 2 of the housing 1 is already provided, on the one hand, by the flattened shape and can additionally be provided in the manner already described.
  • the elastic inserts 6 especially according to the right one Half of the figure there is a cheap possibility, for example, via a 4-part ring, but at least a 2-part ring, which is arranged between the recess 2 and the elastic inserts 6 in the annular space 5a, and laterally via pressure screws that are operated from the outside, the elastic inserts 6 not only from below and above, but also from the side. Due to this measure, very favorable pressure forces are achieved all around in the sealing area. This measure is easy to understand and therefore not shown in the drawing.
  • FIG. 10 shows in the left half of the figure a ball valve in section in which the elastic inserts are formed by, for example, O-rings 6c.
  • the flange cover 7 and the pressure piece 8 fill the annular space 5a.
  • Grooves 7c, 8b are provided in the flange cover 7 and pressure piece 8 in the areas to be sealed, in which the O-rings 6c are arranged.
  • the O-rings 6c are placed in halves in the grooves 7c, 8b and only form a closed ring when they are assembled.
  • the grooves 7c, 8b for example, can also be vulcanized with a suitable elastomer with a corresponding overhang projecting over the surface of the flange cover 7 and pressure piece 8.
  • FIG. 10 shows in the left half an adjustable seal in the area of the ball 3 located towards the control shaft 4 with respect to the trapezoidal sealing groove 3b of the ball 3.
  • An adjustable thread insert 7d is arranged in the flange cover 7.
  • This threaded insert 7d forms, on the one hand, the coaxial clearance 12 with the shoulder 12a for the control shaft 4 or for the control shaft 4 encased in this area, and on the other hand with the end face directed towards the ball 3, a groove space 7e in which an O-ring 6d is arranged .
  • the groove space 7e is laterally delimited by flange cover 7 and casing 5.
  • a corresponding groove for the O-ring 6d could also be provided directly in the end face of the threaded insert 7d facing the ball 3.
  • the end face of the threaded insert 7d facing away from the ball 3 has a slot 7f. This slot 7f is used to adjust the thread insert 7d by means of a suitable key.
  • this adjustable thread insert 7d is that in the event of a leak to the atmosphere, it is possible to adjust the operating position at the first sealing point, which is still located in the ball area with the control shaft 4, without dismantling the flange cover 7.
  • the seal on the selector shaft 4, which is connected downstream of the sealing groove 3b, can, if necessary, also be resealed in the case of readjustment of the threaded insert 7d by additionally inserting a sealing ring into the recess 12.
  • a control hole for the leak test according to the atmosphere can be arranged in a known manner.
  • the adjustable thread insert 7d can of course also be provided if no sealing groove 3b is arranged on the ball 3.
  • the outer casing 5c of the casing 5 has a flange 5d on the side facing the selector shaft 4, which, once again angled, engages in a groove in the housing 1.
  • the annular space 5a located on this side can thus be additionally sealed against the recess 2 by tightening the flange cover 7 against the flange 5d, which is already sealed via O-rings 6c, or if elastic inserts 6 are present, via this sealed annular space 5a.
  • the annular space 5a and the downstream parts are thus protected on this side by a double seal against the possible penetration of the medium. There is also a double seal to the atmosphere.
  • a membrane cover 5m similar to that shown in FIG. 10, which is welded to the end face of the outer casing 5c opposite the flange 5d, can be provided.
  • the membrane-like design of the membrane cover 5m ensures the required axial bracing of the insert so that the seal against the recess 2 is achieved.
  • the membrane cover 5m expediently consists of the same or similar chemically resistant material as the casing 5.
  • a membrane cover can of course also be arranged on both sides of the annular space 5a, one on the upper and lower side of the annular space 5a.
  • At least one metallic stiffening ring 6e can be provided at corresponding points in the annular space 5a between the elastic inserts 6 and the inner wall of the outer casing 5c can be arranged, as can be seen in the right half of FIG. 10.
  • a pressure piece has been omitted in this illustration.
  • the elastic insert 6 acts directly against the bottom of the housing 1.
  • the right half of FIG. 10 shows a conical groove lf on the bottom of the housing 1 into which outer jacket 5c of the annular space 5a engages sealingly. In this way, there is also an additional seal to the seal achieved via the elastic inserts 6 with respect to the recess 2 of the housing 1.
  • the same result can also be achieved instead of the conical groove 1f by means of a conically shaped pressure piece, which acts accordingly with a conically shaped collar against the outer jacket 5c.
  • the outer jacket 5c of the insert can also be kept somewhat weaker in wall thickness than the wall thickness of the casing 5, in order to achieve better contact and thus tightness with respect to the wall of the recess 2 of the housing 1 and on the other hand the torque of the ball 3 appropriate tightness between sheathing 5 and ball 3 should not be increased too much.
  • the elastic insert 6 In order to achieve a favorable actuation torque for the valve for the opening and closing process, it makes sense for the respective versions from 1 to 9a, in the dynamically stressed sealing area between ball 3 and casing 5, the elastic insert 6 only for the required sealing zones between ball 3 and To provide casing 5 accordingly or to provide it with different pressing forces.
  • This can e.g. can be achieved in that by special design of the pressure piece 8 and / or the elastic inserts 6 via e.g. a bead in the required sealing area a stronger pressure is achieved than in the rest of the area.
  • the same effect is achieved if the elastic inserts 6 outside the sealing area e.g. are provided with cutouts so that in this area the sheathing 5 is not so strongly pressed against the peripheral surface of the ball 3.
  • stiffening 5f there is no stiffening 5f between sheathing 5 and outer sheathing 5c, it may prove to be advantageous if instead of stiffening 5f in this area, similar to that in FIG 9 described in the version with wing, there is an anchoring possibility on the casing 5 via lugs 5n which are arranged tangentially on the casing 5, into which the webs or forks of the pressure pieces 8 or flange cover 7 formally engage, see FIG. 11.
  • the metallic sleeve 5e with or without leg 51 matches the ball 3 and the opposite end face of the sleeve 5e matches the recess 2, with a slight play relative to the ball 3 remaining on the end face of the sleeve 5e facing the ball 3.
  • the plastic casing 5 melts away, causing the axle 3 to tilt slightly from the ball 3 with the control shaft 4.
  • the ball 3 then presses against the sleeve 5e and thus against the wall of the recess 2 and brings about a limited sealing when the valve is shut off.
  • a chamber that is resistant to high temperatures can be arranged, if possible chambered, in order to enable a better seal against the end face of the sleeve 5e located at the recess 2 when the event occurs.
  • Ball halves are arranged in order to be able to press the outer casing 5c of the casing 5 more strongly against the wall of the recess 2, for example.
  • the pressure piece located in relation to the ball area can in turn be pressed less so as not to increase the torque for the actuation of the valve for the opening and closing process too much.
  • the elastic inserts 6 are also made in two parts, coaxially with one another, with or without a partition arranged in between.
  • the pressing and sintering process or the isostatic process, the transfer molding process and the spraying process or plastic injection process are suitable for producing the casing 5, depending on the design and material.
  • the outer diameter of the outer jacket 5c of the casing 5 can be turned over if necessary. If necessary, the diameter of the casing 5 on the lower bearing pin 4d can also be turned.
  • a bearing pin 4d it is of course also possible to arrange, for example, a bearing pin in the housing 1 which engages in a " matching bearing bore within the spherical body.
  • the ball valve is designed as a multi-way ball valve, the ball valve has at least one access opening and at least one outlet opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Valve Housings (AREA)

Abstract

Les robinets a boisseau sphériques habituels qui comportent une enveloppe en matière plastique avec garnitures élastiques à la surface de la sphère, requièrent une contre-bride lorsqu'on désire les monter comme accessoire terminal à l'intérieur d'une conduite ou bien d'une installation. Il est possible de pallier cet inconvénient en plaçant les garnitures élastiques de l'enveloppe en matière plastique dans un espace annulaire, de manière à pouvoir la remplacer, et perpendiculairement au sens d'écoulement.
PCT/EP1992/002625 1991-11-14 1992-11-14 Robinet a boisseau spherique WO1993010383A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE4137413 1991-11-14
DEP4137413.4 1991-11-14
DEP4222899.9 1992-07-11
DE4222899 1992-07-11
DE19924235913 DE4235913A1 (de) 1991-11-14 1992-10-23 Kugelhahn
DEP4235913.9 1992-10-23

Publications (1)

Publication Number Publication Date
WO1993010383A1 true WO1993010383A1 (fr) 1993-05-27

Family

ID=27203100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/002625 WO1993010383A1 (fr) 1991-11-14 1992-11-14 Robinet a boisseau spherique

Country Status (2)

Country Link
DE (1) DE4235913A1 (fr)
WO (1) WO1993010383A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU183743U1 (ru) * 2018-04-16 2018-10-02 Евгений Михайлович Шелегов Шаровой кран
RU183745U1 (ru) * 2018-05-23 2018-10-02 Евгений Михайлович Шелегов Кран

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995020116A1 (fr) * 1994-01-25 1995-07-27 Josef Nemetz Robinet a boisseau spherique
DE4414716A1 (de) * 1994-01-26 1995-07-27 Klein Schanzlin & Becker Ag Schwenkarmatur
ATE194692T1 (de) * 1994-04-21 2000-07-15 Josef Nemetz Kugelhahn mit einem mit kunststoff ausgekleideten kugelhahneinsatz
DE29806226U1 (de) 1998-04-04 1998-06-18 Xomox International GmbH & Co, 88131 Lindau Armatur
DE102009025599B4 (de) 2009-06-20 2019-05-29 Hansa-Flex Ag Kugeldichtungsvorrichtung zum Abdichten gegenüber einer Kugeloberfläche einer Kugel, Tankmischer mit einer solchen Kugeldichtungsvorrichtung und ein Verfahren zum Warten einer Kugeldichtungsvorrichtung zum Abdichten gegenüber einer Kugeloberfläche einer Kugel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1679946A1 (de) * 1967-09-29 1971-04-29 Rudolf Breher Verfahren zum Herstellen von Kugelhaehnen
DE3546345A1 (de) * 1985-04-26 1986-10-30 Josef 6200 Wiesbaden Nemetz Kugelhahn in einem mit kunststoff ausgekleideten gehaeuse
DE3841026A1 (de) * 1988-12-06 1990-06-07 Josef Nemetz Absperrarmatur in einem mit kunststoff ausgekleideten gehaeuse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1679946A1 (de) * 1967-09-29 1971-04-29 Rudolf Breher Verfahren zum Herstellen von Kugelhaehnen
DE3546345A1 (de) * 1985-04-26 1986-10-30 Josef 6200 Wiesbaden Nemetz Kugelhahn in einem mit kunststoff ausgekleideten gehaeuse
DE3841026A1 (de) * 1988-12-06 1990-06-07 Josef Nemetz Absperrarmatur in einem mit kunststoff ausgekleideten gehaeuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU183743U1 (ru) * 2018-04-16 2018-10-02 Евгений Михайлович Шелегов Шаровой кран
RU183745U1 (ru) * 2018-05-23 2018-10-02 Евгений Михайлович Шелегов Кран

Also Published As

Publication number Publication date
DE4235913A1 (de) 1993-05-19

Similar Documents

Publication Publication Date Title
EP2140188B1 (fr) Soupape pour séparer des milieux de produits dans des canalisations d'une installation acheminant des produits
DE19620694C2 (de) Ventilanordnung
DE69121234T2 (de) Verstärktes Kunststoffventil
DE3237734A1 (de) Drosselventil
EP2345831B1 (fr) Elément de blocage
WO1993010383A1 (fr) Robinet a boisseau spherique
EP1418367A2 (fr) Joint annulaire plat
DE7008244U (de) Drehklappenventil.
EP1811211B2 (fr) Vanne pour l'arrêt ou la régulation d'un fluide
EP0199360B1 (fr) Vanne sphérique dans un corps revêtu d'une matière synthétique
EP0105365B1 (fr) Robinet d'arret ou valve de reglage
DE9405726U1 (de) Stopfbuchse für den Schnelleinbau
EP0756681B1 (fr) Robinet a tournant spherique a insertion revetue de matiere plastique
DE69820044T2 (de) Drosselventil
EP1982090B1 (fr) Frein a disques, notamment pour vehicules utilitaires
DE19706575C2 (de) Schieberorgan mit Monoblockgehäuse
DE19707534A1 (de) Vorfluthahn
EP0260482B1 (fr) Robinet à boisseau cylindrique ou conique
DE2613456C3 (de) Drosselklappenventil
DE3145863C2 (de) Absperrventil für eine sanitäre Auslaufarmatur
WO1995020737A2 (fr) Robinet pivotant
DE4414716A1 (de) Schwenkarmatur
DE3805638A1 (de) Absperrhahn mit zylindrischem oder konischem kueken
DE4442979A1 (de) Kugelhahn
EP1058797B1 (fr) Robinet-vanne

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase