Classifications

• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
  • E03B9/00—Methods or installations for drawing-off water
  • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
  • E03B9/04—Column hydrants
• • 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
  • F16K27/006—Construction of housing; Use of materials therefor of hydrants

Definitions

• the invention relates to a hydrant as described in the preamble of claim 1.
• a hydrant which is formed from a one-piece jacket tube for receiving a main valve with a spindle-operated valve body and a floating ball.
• the valve body and the floating ball form a first and a second locking arrangement for a medium in the casing tube with sealing surfaces or with a sealing ring used in a shaping of the casing tube.
• DE 100 28 655 AI also discloses a pipe connection for a height-adjustable hydrant which can be adapted to a trench depth by means of a multi-part telescopic pipe arrangement fastened to a valve body.
• a valve piston which can be actuated via an adjusting spindle, is adjustably arranged in the valve body, which forms a locking arrangement for the medium with an annular seal arranged in the valve housing, and the adjusting spindle is constructed in several parts and a spindle part connected to the valve piston is secured against rotation in the tube arrangement.
• the object of the invention is to provide a hydrant with a valve housing which is designed equally for a single as well as a multiple locking arrangement and the assembly, as well as the replacement of wearing parts, can be carried out in a simplified manner.
• valve housing into a basic housing and a top-mounted housing with a flange sealing ring arranged in between and the unmistakable position assignment of the components specified by the positioning means means that the initial assembly and subsequent manipulations when replacing wearing parts can be carried out error-free and simplified.
• an embodiment according to claim 5 is also advantageous, as a result of which a streamlined and positionally secure arrangement of a sealing element to be provided for a double lock is achieved, which can be replaced easily after wear and tear and a complex adhesive process, as is often used, is avoided.
• Locking in a first locking arrangement which prevents unwanted outflow of the medium, e.g. in the event of damage to the hydrant column, effectively prevented.
• valve piston According to the development described in claim 18, a particularly wear-resistant design of the valve piston is achieved with a high sealing effect. Due to the design described in claim 19, stable guidance of the valve piston is achieved and, at the same time, the function for emptying the hydrant is achieved without further measures after the locking arrangement or locking arrangements have been closed.
• the design described in claim 21 also reduces the assembly effort and combines the locking function with the emptying function in a simple manner, without additional components being required.
• FIG. 2 is a detailed view of the valve housing, consisting of the base housing and the top housing with the two end positions of the locking elements, cut.
• FIG. 3 shows a view of the valve housing with a positioning device of the housing elements
• FIG. 4 shows another design of the valve housing of the hydrant according to the invention, cut along lines IV-IV in FIG. 6;
• FIG. 5 shows the valve housing cut along the lines V-V in Fig. 6.
• Fig. 6 shows the valve housing in plan view.
• a hydrant e.g. with a double lock, placed in a vertical orientation, e.g. on a flange tube 2, for the supply of a medium 3, in particular
• the hydrant 1 comprises a valve housing 4 which is connected to the flange tube 2 and is divided in the direction of flow - according to arrow 5 - of the medium in a plane running perpendicular to the direction of flow and forms a base housing 6 and an add-on housing 7 with which a hydrant column 8 is connected to the flow on which a hydrant head 9 with at least one outlet fitting 10 is placed.
• the hydrant column 8 is preferably provided with a threaded attachment 11 with an external thread 12 and screwed directly into an internal thread 13 of the attachment housing 7.
• shut-off device 14 with a first locking arrangement 15 with a shut-off element 17 designed as a floating ball 16 and a further locking arrangement 18 with a shut-off element 20 designed as a valve piston 19.
• the shut-off device 14 is adjusted via an actuating device 21.
• a rotatably mounted cap 22 is arranged on the hydrant head 9 and is connected to an adjusting spindle 23 which extends into the hydrant column 8 and which has an external thread 24.
• the valve piston 19 is connected to a drill pipe 25 projecting in the direction of the adjusting spindle 23, which is provided with a spindle nut 26 with which the adjusting spindle 23 is in threaded grip.
• This guide arrangement 27 comprises an approximately radially projecting guide arm 31 which is connected to the valve piston 19 or the drill pipe 25 and which projects into a linear guide track 32 which runs parallel to the longitudinal central axis 29 and which is formed by parallel ribs 33 on an inner surface 34 of the attachment housing 7 and thus the rotary movement on the cap 22 and the thread engagement between the adjusting spindle 23 and the spindle nut 26 is converted into a linear movement - according to double arrow 28 - of the shut-off element 20.
• valve housing 4 formed from the base housing 6 and the top housing 7 and with an annular flange sealing ring 35 stretched between them. 2 shows the two positions of the shut-off elements 17, 20 for a blocked and free passage for the medium.
• the flow cross-section 30 comprising an annular shaped sealing element 36 with a sealing bead 37, which forms a sealing surface 39 with an inner surface 38 facing the floating ball 16, is arranged in the base housing 6.
• the form sealing element 36 is arranged on a sleeve-shaped ring extension 40 of the flange sealing ring 35, the ring extension 40 being encompassed by a jacket part 41 of the form sealing element 36 and being fixed between an outer surface 42 of the ring extension 40 and an inner surface 43 of the base housing 6 by a press fit.
• the flange sealing ring 35 is tensioned with a flange arrangement 44, consisting of parallel flange rings 45 between flanges 46 of the base housing 6 and the top housing 7 by means of connecting means 47, for example screws.
• the ring extension 40 integrally connected to the flange arrangement 44 of the flange sealing ring 35 with the form sealing element 36 surrounding it projects in the direction of the floating ball 16 into the base housing 6.
• the floating ball 16 is mounted in the base housing 6 so as to be adjustable in the direction of flow of the medium 3.
• the floating ball is designed as a floating body with a lower density than a density of the medium 3 and thus through the medium 3 to seal the flow cross section 30 against the sealing surface 39 of the molded sealing element 36 or the sealing bead 37 is pressed.
• the form of the form sealing element 36 provides the tubular jacket part 41, with which the ring extension 40 is encased and with which the sealing bead 37 is connected in one piece, which protrudes beyond the ring extension 40 against the flow direction of the medium 3, the sealing surface 39 being in the form of a spherical cap is.
• a diameter 48 of the floating ball 16 corresponds approximately to an inner diameter 49 of the base housing 6 in the connection area to the attachment housing 7.
• the jacket part 41 of the form-sealing element 36 is radial
• annular sealing lip 50 is integrally formed, which serves as a seal between the flange 46 of the base housing 6 and the flange arrangement 44 of the flange sealing ring 29.
• valve piston 19 shows the blocking arrangement 18 with the valve piston 19, in addition to the blocking arrangement 15 with the floating ball 16, in the two positions, a cylindrical inner surface 51 of the flange sealing ring 35 having a sealing surface 52 for the valve piston 19 in the blocking position of the valve piston 19 forms.
• the valve piston 19 is located in an upper end position, limited by an adjustment path of the adjusting spindle, in which a valve plate 53 blocks the flow for the medium 3 from the base housing 6 into the top housing 7 and thus into the hydrant column 8.
• the valve disk 53 is provided on the circumference, facing the inner surface 51 of the ring extension 40, with a layer 54 of permanently elastic material, in particular an elastomer.
• At least two diametrically opposite guide and sealing vanes 55 which extend approximately parallel to the longitudinal central axis 29, are arranged on the valve plate 53, which are also provided with the layer 54, which provides a guide in an adjustment area of the valve piston 19 with the inner surface 51 of the ring extension 40 train for the valve piston 19.
• the drain hole 56 is flow-connected through a congruent connecting bore 57 crossing the guide and sealing wing 55 to the top housing 7 and thus the hydrant column 8, and this connection empties the hydrant 1 in its entirety, via the shut-off device 14 lying area to make this frost-proof.
• the blocking arrangement 15 with the floating ball 16 is opened simultaneously with the opening of the blocking arrangement 18 with the valve piston 19.
• the floating ball 16 is moved in the open position against the flow direction of the medium 3 with an actuating surface 58 of the valve plate 53 facing it.
• the locking arrangement 18 is closed, the buoyancy of the floating ball 16 or the flowing medium 3 results in an automatic closing.
• guide ribs 61 are provided in the basic housing 6, these having a diameter 48 of the floating ball 16 Limit the corresponding cross-section and thus effectively prevent sideways evasion.
• Valve piston 19 which consists of the radially projecting guide arm 31 arranged on one of the guide and sealing vanes 55 and the guide track 32 formed by the ribs 33 of the top housing 7.
• the ribs 33 have a different length 62, centering the valve piston during assembly.
• FIG. 3 shows a position assignment between the base housing 6, the add-on housing 7 and the flange sealing ring 35 arranged between them, which simplifies assembly and avoids assembly errors. Since to seal the drain hole 56 with one of the guide and sealing wings, its position must be exactly matched to the position of the drain hole 56 of the flange sealing ring 35, and on the other hand the position of the guide and sealing wing is predetermined by the position of the guide track for the guide arm in the top housing 7 is, for example on the flanges 46 of the base housing 6 and the top housing 7 positioning means 63 Positioning lugs are provided, which position them relative to one another and in relation to the flange sealing ring 35 in a predetermined position, e.g. in that a shoulder 64 traversed by the drain hole 56 is to be positioned on the flange arrangement 44 of the flange sealing ring 35 between the positioning means 63, thereby ensuring that the components are assembled in the correct position.
• the base housing 6 is provided for connection to the flange tube 2 according to a preferred embodiment with a loose flange 65, i.e. that it can be rotated relative to the base housing 6 and that the valve housing 4 with the hydrant column 8 and the hydrant head can be positioned in desired positions regardless of the position of a fixed flange 66 on the flange tube 2.
• the loose flange 65 is preferably formed from two half rings which are connected in a stepped overlap area by connecting means.
• the latter is arranged between a sealing flange 67 of the base housing 7 and a positioning flange 68, which is preferably formed by an extension projecting over the valve housing 4 at certain points or in a ring.
• an inner diameter 69 of the sealing bead 37 is slightly larger than an inner diameter 70 of the ring extension 40 and also larger than an outer diameter 71 of the valve piston 19, and this is slightly larger in the uncompressed layer 54 than the inner diameter 70 of the ring extension 40.
• valve housing 4 to 6 show another embodiment of the valve housing 4 with the shut-off device 14 of the hydrant 1 (not shown further) with a single lock, the same reference numerals being used for parts and components already described and described in the previous figures.
• the valve housing 4 consists of the base housing 6 and the top housing 7, between which the flange sealing ring 35 is tensioned in the flange arrangement 44, between the flanges 46.
• the locking device 14 consists of the valve piston 19 with the two diametrically opposed guide and sealing vanes 55 and is preferably a cast metal body which is encased on all sides with an elastomer material and which is in an axial direction
• Bore 72 is penetrated by an actuating rod 73 and is rotatably mounted thereon and immovably in the axial direction.
• a e.g. sealing arrangement 75 formed by O-rings 74 is provided between the valve piston 19 and the actuating rod 73 .
• the actuating rod 73 has an external thread 78 in an end region 76 projecting into the base housing 6 over a length 77 which determines an adjustment path for the valve piston 19 and which is in threaded engagement with a spindle nut 79 which is fixed in a support web 80 which is supported by a Housing wall 81 of the base housing 6 protrudes in the direction of the longitudinal central axis 29.
• the end region 76 provided with the external thread 78 thus forms the adjusting spindle 23 for adjusting the valve piston 19 and is coupled in a rotationally fixed manner to the drill pipe 25 of the actuating device 21.
• the guide arm 31 is provided, which secures the valve piston 19 against rotation in the guide track 32, which is formed by the ribs 33 projecting beyond the inner surface of the attachment housing 7.
• a cylindrical sealing surface 82 is formed on the valve piston 19 and has a cylindrical - lo ⁇
• the inner surface 83 of the ring extension 28 of the flange sealing ring 35 causes the flow of the medium 3 to be blocked as soon as the valve piston 19 is adjusted into a blocking position in which the surfaces overlap.
• a sealing element is used instead of the form sealing element with the sealing lip, e.g. O-ring, flat sealing ring, coating etc. provided in the flange arrangement 44 for sealing.
• valve piston 19 is in a position which enables the flow.
• the emptying bore 56 which crosses the flange sealing ring 35 in the radial direction, is covered by one of the guide and sealing vanes 55 and thus a
• the sealing surface 82 of the valve piston 19 is arranged upstream of the drain hole 56 in the direction of flow of the medium 3 and in sealing contact with the inner surface 83 of the flange sealing ring 35.
• the drain hole 56 is in free flow connection with the no longer pressurized attachment housing 7 or the hydrant column 8 and the hydrant head, which means that these areas are emptied automatically.
• Flange sealing ring 35 is designed to be pressure-tight by various measures known from the prior art, e.g. with flat sealing rings, O-rings, coatings, etc.
• the exemplary embodiments show possible design variants of the hydrant 1, it being noted at this point that the invention is not limited to the specially illustrated design variants of the hydrant 1, but rather also various combinations of the individual design variants with one another are possible and this variation possibility is based on the teaching of technical action
• the present invention lies in the ability of the person skilled in the art in this technical field.
• the scope of protection also includes all conceivable design variants which are possible by combining individual details of the design variant shown and described.
• FIGS. 1, 2, 3; 4, 5, 6 shown form the subject of independent, inventive solutions.
• the relevant tasks and solutions according to the invention can be found in the detailed descriptions of these figures.
• Adjustment spindle 58 actuating surface

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Mechanical Engineering (AREA)
• Valve Housings (AREA)
• Lift Valve (AREA)
• Taps Or Cocks (AREA)

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• 2004
  • 2004-06-09 AT AT9992004A patent/AT413834B/de not_active IP Right Cessation
• 2005
  • 2005-06-02 EP EP05744950A patent/EP1759067A1/de not_active Withdrawn
  • 2005-06-02 WO PCT/AT2005/000189 patent/WO2005121462A1/de active Application Filing
  • 2005-06-02 RU RU2006147228/03A patent/RU2361044C2/ru not_active IP Right Cessation

Non-Patent Citations (1)

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