EP3862494B1 - Hydrant - Google Patents

Hydrant Download PDF

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Publication number
EP3862494B1
EP3862494B1 EP21154784.9A EP21154784A EP3862494B1 EP 3862494 B1 EP3862494 B1 EP 3862494B1 EP 21154784 A EP21154784 A EP 21154784A EP 3862494 B1 EP3862494 B1 EP 3862494B1
Authority
EP
European Patent Office
Prior art keywords
shut
blocking element
rotation
axis
supply
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.)
Active
Application number
EP21154784.9A
Other languages
German (de)
French (fr)
Other versions
EP3862494A1 (en
Inventor
Stefan Hofer
Alexander Ecker
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.)
E Hawle Armaturenwerke GmbH
Original Assignee
E Hawle Armaturenwerke GmbH
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 E Hawle Armaturenwerke GmbH filed Critical E Hawle Armaturenwerke GmbH
Publication of EP3862494A1 publication Critical patent/EP3862494A1/en
Application granted granted Critical
Publication of EP3862494B1 publication Critical patent/EP3862494B1/en
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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
    • E03B9/14—Draining devices for hydrants
    • 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
    • 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
    • E03B9/025—Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks
    • E03B9/027—Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks with features preventing frost damage
    • 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
    • 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
    • E03B2009/022—Hydrants with a tubular valve seat

Definitions

  • the invention relates to a hydrant according to the preamble of the independent patent claim.
  • Fire hydrants have been known and published in various forms for a long time. Hydrants are typically used to provide access to an underground fluid line, particularly a water line.
  • conventional hydrants each include a riser pipe that extends from the liquid line running underground to the surface and usually also up to a certain operating height.
  • hydrants In order to establish or shut off the liquid supply into the riser pipe, hydrants corresponding to the prior art comprise a shut-off device, such as a piston valve, which can be operated via an actuating element.
  • a shut-off device such as a piston valve
  • Conventional shut-off devices are usually actuated in such a way that a shut-off element is moved against the liquid pressure and pressed onto a valve seat. Overcoming the forces from fluid pressure makes operation difficult.
  • the valve seat and the Sealing element subjected to excessive stress, which reduces the service life of these elements.
  • it is necessary to ensure a long-term seal which can also be problematic if the valve seats are under pressure.
  • hydrants also have a drain line that allows the riser to drain when the liquid supply is shut off. This in particular to prevent liquid or ice remaining in the riser pipe from damaging the hydrant.
  • Liquids in the context of the invention are in particular liquid substances such as water, free-flowing suspensions, free-flowing foams or the like.
  • the object of the invention is now to provide a hydrant whose operability and safety is improved compared to conventional hydrants.
  • shut-off element is rotatably mounted about an axis of rotation, that the shut-off element optionally has a first rotational position in which the liquid supply from the liquid line into the riser pipe is closed by the shut-off element and the drain line is open, and that the shut-off element optionally has a has a second rotational position in which the
  • Liquid supply from the liquid line is opened in the riser through the shut-off and the drain line is closed.
  • the drain line is closed by the shut-off element in the second rotary position, and in particular that the drain line is released by the shut-off element in the first rotary position.
  • shut-off element follows, at least in sections, a surface in the form of a body of revolution, the axis of rotation of which runs concentrically with the axis of rotation.
  • the shut-off element is cylindrical and/or bell-shaped, that the shut-off element has at least one through-opening in its jacket for opening the liquid supply and a continuous area for closing the liquid supply.
  • the shut-off element has at least one clearance for opening the drain line and a continuous area for closing the drain line, and in particular that the clearance for opening the drain line and the continuous area for closing the drain line is provided in the casing or is a part of the coat is.
  • a supply line is provided for supplying the liquid into the riser pipe, that the supply line extends into the riser pipe in the form of a socket, that the supply line, in particular its lateral surface, has a supply opening, and that the supply opening passes through in the first rotary position of the shut-off element the shut-off element is closed, in particular by the continuous area for closing the liquid supply.
  • a feed line is provided for feeding the liquid into the riser pipe.
  • the feed line extends in the form of a socket into the riser pipe.
  • the feed line has a feed opening, in particular in its lateral surface.
  • the passage opening of the shut-off element and the supply opening are positioned relative to one another in the second rotational position of the shut-off element in such a way that the liquid supply into the riser pipe is opened.
  • actuating element to be rotatably coupled to the shut-off element via a gear and in particular also via a shaft.
  • the transmission has a gear reduction by which, when the actuating element is rotated by an actuating angle, the shut-off element is rotated by a shut-off angle that is smaller than the actuating angle.
  • the reduction is between 1:10 and 1:50, preferably 1:40.
  • the transmission comprises at least one connecting link. If necessary, it is provided that the transmission includes a scanning element that is in operative contact with the connecting link.
  • the transmission includes a spindle drive for moving the scanning element along the axis of rotation.
  • the connecting link runs obliquely and/or helically to the axis of rotation.
  • the scanning element is mounted in such a way that it is pivoted about the axis of rotation (6) when it moves along the axis of rotation and along the connecting link.
  • the sensing element is rotationally connected or rotationally coupled to the shut-off element for actuating the shut-off device.
  • the connecting link is designed as an oblique or helical groove arranged in a sleeve, and that in particular several such grooves are provided in the sleeve, which rotate the scanning elements about the axis of rotation when the scanning element moves along the axis of rotation.
  • the shaft has a variable length and, in particular, is designed to be telescopic.
  • the riser pipe has a changeable length and, in particular, is designed to be telescopic.
  • the construction according to the invention creates a shut-off device whose shut-off element does not have to be moved against the liquid pressure in order to shut off the hydrant.
  • the shut-off element is a rotatably mounted shut-off element which at least partially follows a surface in the shape of a body of revolution, the axis of rotation of the surface running concentrically with the axis of rotation of the movement of the shut-off element.
  • a movement of the shut-off element is carried out essentially normal to the direction of flow of the escaping liquid by this form of shut-off device for shut-off. As a result, the forces required for shutting off can be reduced.
  • the liquid pressure acts preferably normal to the direction of movement of the shut-off element even in the shut-off state, in particular to the only degree of freedom of the shut-off element, so that these forces are not in or against the Movement direction of the shut-off element but run essentially normal to this.
  • the shut-off element of the shut-off device has at least two rotational positions into which it can be selectively moved. In a first rotary position, the liquid feed from the liquid line into the riser pipe is closed by the shut-off element. In the second rotary position, the liquid supply from the liquid line into the riser pipe is open. In addition, there may also be at least one intermediate position between the first and the second rotational position, in which an opening occurs only partially, with which, for example, the flow or the volume flow can be regulated.
  • the hydrant includes a supply line, which has a tubular, round cross section, for example, and protrudes into the riser pipe in the form of a socket.
  • the feed line includes a feed opening which, for example, passes through the casing of the feed line.
  • the supply line is preferably tubular with a round tube cross-section, the supply opening being designed as a through-opening running through the jacket of the tube.
  • the shut-off element can, for example, be in the form of a rotary body, a hollow cylinder, a tube, a ring or a bell and can encompass the supply line from the outside or can also be arranged inside the supply line. Due to the fact that the shut-off element has a through-opening and a continuous area in its casing, the liquid supply can be opened or closed by rotating the shut-off element.
  • the feed opening is closed by the continuous area of the shut-off element. If the shut-off element is rotated out of this first rotational position, the through-opening and the feed opening first overlap in an intermediate position, certain volume flow of liquid can enter the riser pipe. If the shut-off element is moved further, the overlapping of the passage opening and the feed opening becomes larger and larger, which also increases the volume flow that occurs.
  • the passage opening of the shut-off element is preferably above or concentric with the supply opening of the supply line.
  • the drain line is also actuated by actuating the shut-off element.
  • the shut-off element has a clearance for opening the drain line and a continuous area for closing the drain line.
  • the drain line is preferably arranged in the lower region of the riser pipe in order to allow the riser pipe to be emptied, in particular completely emptied.
  • shut-off elements are preferably arranged on the shut-off element in such a way that the drain line is closed when the liquid feed into the riser pipe is open, and that the drain line is open when the liquid feed into the riser pipe is closed. As a result, the riser pipe can be emptied automatically when the liquid supply is stopped.
  • the actuating element is coupled to the shut-off element via a gear.
  • a gear is arranged along the course of force or torque acting from the actuating element to the shut-off element.
  • one or more shafts or other elements such as clutches, telescopic connections and/or plug-in connections can also be provided along this drive train for actuating the shut-off element.
  • the gearbox has a reduction. This means that when the actuating element is rotated by a certain actuating angle, the Shut-off element is rotated by a shut-off angle, but the shut-off angle is smaller than the operating angle.
  • An example reduction is 1:40. This means that with ten rotations of the actuating element, the shut-off element is rotated by a quarter of a rotation, ie by 90°.
  • Pivoting of the shut-off element by 90° is preferably required to move the shut-off element from the first rotational position into the second rotational position.
  • the pivoting from the first rotary position to the second rotary position can be about 45°, about 90° or about 180°.
  • An exemplary transmission includes a spindle drive, a gate and a scanning element.
  • a spindle can be driven by the actuating element, by means of which a connecting link is displaced linearly and, in particular, translationally along the axis of rotation.
  • the connecting link is, for example, an oblique or helical groove or an oblique or helical web which is provided, for example, in the inside of a sleeve.
  • this transmission comprises at least one sensing element, which is in operative contact with the link in such a way that it is pivoted about or about an axis of rotation when the link is moved.
  • the pivoting of the scanning element takes place to a very limited extent compared to the actuation of the actuating element, which is due to the gear reduction.
  • the scanning element is subsequently coupled to the blocking element, with the result that the blocking element is also rotated/pivoted when the scanning element is rotated/pivoted.
  • the scanning element when the actuating element is rotated, the scanning element can be moved along the axis of rotation via the spindle drive.
  • the connecting link and/or the sleeve preferably remain rigid or unmoved. If the scanning element is displaced along the axis of rotation, the scanning elements are moved along the connecting link and/or guided. Since the connecting link is arranged in a helical or oblique manner, this results in a pivoting or twisting of the scanning element or the scanning elements. This pivoting is subsequently transferred to the shut-off element, with the transfer preferably taking place via a shaft.
  • the shaft or at least one shaft of the hydrant is length-adjustable and, in particular, is telescopic.
  • the shaft is preferably provided between the scanning element and the blocking element and preferably rigidly couples the blocking element to the scanning element.
  • this construction can also be used to adjust the length of the riser pipe, with the length of the shaft also changing automatically when the length of the riser pipe is adjusted.
  • the riser pipe can be designed in several parts for this purpose, with one part being arranged such that it can be displaced relative to the other part along the axis of rotation. The displacement can be made possible, for example, via a screw connection.
  • the length is preferably adjusted along the axis of rotation
  • the liquid column does not have to be compressed or displaced in order to shut off the liquid supply. Rather, with the construction according to the invention, the shut-off takes place without a change in volume and, to put it simply, by cutting off the liquid flow.
  • the riser pipe Due to the length adjustability of the riser pipe, it is possible to flexibly adapt the hydrant to the position of the underground liquid line as well as to to carry out the ground level.
  • two sections of the riser are telescopically connected to each other via a thread.
  • the outer pipe preferably remains fixed, which also enables subsequent height adjustment without having to dig the hydrant down to the ground.
  • the length of the internal shaft automatically adjusts to the change in length without having to disassemble or excavate the system.
  • the segmented design of the rack-like thread segments reduces the frictional forces and also the necessary manufacturing accuracy, so that the system can be easily locked or operated with hand tools even after a long period of standstill.
  • the configuration according to the invention preferably enables a lubricant-free mechanism for actuating the hydrant.
  • the figures 4a and 4b show sectional views of an exemplary transmission in two different positions.
  • the reference numbers correspond to the following components: Riser pipe 1, shut-off device 2, shut-off element 3, drain line 4, actuating element 5, axis of rotation 6, rotating body-shaped surface 7, jacket 8, through opening 9, continuous area (to close the liquid supply) 10, clearance 11, continuous area (to close the drain line) 12 , supply line 13, supply opening 14, gear 15, shaft 16, spindle drive 17, connecting link 18, scanning element 19, sleeve 20, adjusting thread 21.
  • Figure 12 shows a sectional view of an embodiment of a hydrant according to the invention, the view being broken in two places so that relevant components can be shown without having to show the full length of the hydrant.
  • the hydrant comprises a riser pipe 1, which is designed in several parts in the present embodiment.
  • This riser pipe 1 extends essentially from an actuating element 5 to the supply line 13, which protrudes into the riser pipe 1 in the form of a socket on one side and can be connected to a liquid line running underground on its other side.
  • the connection can be made in a conventional manner, for example via a pipe coupling and in particular via a flange connection.
  • the hydrant also includes a shut-off device 2.
  • the shut-off device 2 includes a shut-off element 3, which is bell-shaped in the present embodiment and has a jacket 8, the jacket being delimited at least on its inner lateral surface by a surface 7 in the shape of a body of revolution.
  • the shut-off element 3 is connected to a shaft 16 in the converging area of the bell shape. This shaft 16 is used for the coupling or the transmission of torque from the actuating element 5 to the shut-off element 3.
  • the shaft 16 has a multi-part design.
  • the shaft 16 is telescopic and comprises two sections that can be slid into one another.
  • the parts of the shaft 16 are coupled to one another in such a way that they have a degree of freedom in relation to one another along the longitudinal extension, in particular along the axis of rotation 6, and can be displaced telescopically in relation to one another.
  • This degree of freedom or this mobility can optionally be locked using a suitable means such as a clamping screw.
  • a suitable means such as a clamping screw.
  • the parts of the shaft 16 are not round but are equipped with a polygonal plug-in connection, with which a rotary connection can be produced.
  • the hydrant of 1 includes a drain line 4, which is designed to drain the riser pipe 1.
  • the hydrant preferably comprises a connection or outlet in the upper region of the riser pipe 1, through which the liquid flowing into the riser pipe 1 can be removed.
  • the shut-off element 3 can be shifted into different rotational positions, as will be explained in detail in the following figures.
  • the displacement takes place by rotating the shut-off element 3 about the axis of rotation 6.
  • the supply opening 14 of the supply line 13 can be optionally closed or opened by the shut-off element 3.
  • this transmission 15 comprises a spindle drive 17, a connecting link 18 and a scanning element 19, which is not visible in this illustration.
  • FIG 2 shows an oblique view of an embodiment of a hydrant according to the invention, in particular the embodiment of FIG 1 , but with some components partially hidden for clarity.
  • the hydrant in particular the shut-off device 2 is in the first rotational position.
  • the liquid supply is shut off.
  • the shut-off element 3 is arranged opposite the supply line 13 in such a way that a continuous region 10 of the shut-off element 3, in particular a continuous region 10 of the jacket 8 of the shut-off element 3, closes the supply opening 14 of the supply line 13 (not visible here).
  • the shut-off element 3 has a surface 7 in the form of a body of revolution, the axis of rotation of which coincides with the axis of rotation 6 .
  • the shut-off element 3 and the supply line 13 as well as other components can include seals in order to improve the sealing effect.
  • the shaft 16 is polygonal, in particular square, in order to enable torque transmission, although the shaft 16 is telescopic and thus length-adjustable along the axis of rotation 6 .
  • the hydrant of 2 comprises a drain line 4.
  • This drain line 4 is arranged in the lower region of the riser pipe 1 in order to allow the riser pipe 1 to be emptied, in particular completely.
  • the drain line 4 can be opened and closed by actuating the shut-off device 2 .
  • the drain line 4 In the present position, the drain line 4 is open, so that liquid in the riser pipe 1 can automatically escape through the drain line 4 .
  • the shut-off element 3 or the shut-off device 2 comprises a clearance 11 which is arranged in the present position in the area of the inlet of the drain line 4 . In this position, the drain line 4 is open.
  • the shut-off device 2 also includes a continuous area 12 for closing the drain line 4.
  • the riser pipe 1 is designed in several parts, which allows the length of the riser pipe 1 to be adjusted.
  • the riser pipe 1 comprises an adjusting thread 21 which causes a change in length when one part of the riser pipe 1 is twisted relative to the other part of the riser pipe 1 .
  • FIG. 3 shows the embodiment of 2 but in the second rotary position.
  • the liquid supply to the riser pipe 1 is open.
  • liquid can flow from the underground liquid line, not shown, through the supply line 13 and its supply opening 14 and then through the passage opening 9 of the shut-off element 3 of the shut-off device 2 into the riser pipe 1 .
  • the passage opening 9 of the shut-off element 3 is in the region of the supply opening 14 of the supply line 13.
  • Liquid is supplied in particular when the supply opening 14 and the through-opening 9 overlap and thus overlap one another.
  • the shut-off device 2 In the present rotary position, the shut-off device 2 is completely open and the passage opening 9 is located centrally above or in front of the feed opening 14, which means that a maximum cross-section is released.
  • the drain line 4 is closed in that the continuous area 12 of the shut-off device 2 closes the inlet of the drain line 4 .
  • the shut-off device 2 is actuated by rotating the shut-off element 3, wherein between the rotational position of the 2 and the rotational position of the 3 further intermediate positions can occur in which the flow or the volume flow can be reduced compared to a full flow.
  • the figures 4a and 4b show sectional views to explain the function of a preferred gear 15.
  • the gear 15 includes a spindle drive 17, which is driven by actuating or rotating the actuating element 5.
  • link 18 is provided in a sleeve 20 , actuation of spindle drive 17 displacing scanning element 19 along axis of rotation 6 .
  • the scanning element 19 is moved along the link 18 without the sleeve 20 or the link 18 being rotated or moved.
  • link 18 is designed as a helical groove inside sleeve 20 .
  • At least one scanning element 19 is provided for scanning link 18, with two scanning elements 19 being provided in the present embodiment, which project on both sides on diametrically opposite sides.
  • the cutting plane is in the figures 4a and 4b selected so that it runs through the scanning element 19 or through the scanning elements 19 in both representations. If the scanning element 19 is now displaced along the axis of rotation 6, the scanning elements 19 are moved or guided along the connecting link 18. Since link 18 is arranged helically or obliquely, scanning elements 19 swivel or rotate.
  • a hydrant according to the invention in particular a preferred embodiment of a hydrant according to the invention, is actuated as follows: In a first step, the actuating element 5 is actuated. It may be necessary for this to remove a protective cap and, in particular, to use a suitable tool to rotate the actuating element 5 . The rotation of the actuating element 5 actuates a spindle drive 17 which displaces at least one scanning element 19 along the axis of rotation 6 .
  • the scanning elements 19 are pivoted about the axis of rotation 6 by the movement along the connecting link 18 .
  • the shut-off element 3 is also moved.
  • the shut-off element 3 includes a through-opening 9. This is turned into a supply opening 14 of a supply line 13 by twisting the shut-off element 3 in such a way that the liquid can enter the riser pipe 1 of the hydrant through the supply line 13.
  • the liquid can be removed from the riser pipe 1 through a suitable opening.
  • the actuating element 5 is rotated in the opposite direction.
  • the shut-off device 2 is closed again in a manner analogous to that described above.
  • a drain line 4 is opened.
  • this drain line 4 is opened via a release 11 provided in the shut-off element 3 .
  • the liquid in the riser pipe 1 after the shut-off can be drained off through the drain line 4 .
  • the shut-off device 2 and the gear 15 as well as the shaft 16 are arranged inside the riser pipe 1, whereby the riser pipe 1 also acts as a housing for the components of the hydrant.
  • the axes of rotation 6 of the shut-off element 3, the spindle drive 17, the scanning element 19, the shut-off element 3 and the shaft 16 preferably run coaxially.

Description

Die Erfindung betrifft einen Hydranten gemäß dem Oberbegriff des unabhängigen Patentanspruchs.The invention relates to a hydrant according to the preamble of the independent patent claim.

Hydranten sind in unterschiedlichen Ausführungsformen seit langer Zeit bekannt und publiziert. Hydranten werden in der Regel dazu verwendet, einen Zugang zu einer im Boden verlegten Leitung für Flüssigkeiten, insbesondere einer Wasserleitung, herzustellen.Fire hydrants have been known and published in various forms for a long time. Hydrants are typically used to provide access to an underground fluid line, particularly a water line.

Hierzu umfassen herkömmliche Hydranten jeweils ein Steigrohr, das sich von der unterirdisch verlaufenden Flüssigkeitsleitung bis an die Oberfläche und in der Regel auch bis zu einer gewissen Bedienhöhe erstreckt.For this purpose, conventional hydrants each include a riser pipe that extends from the liquid line running underground to the surface and usually also up to a certain operating height.

Zum Herstellen bzw. Absperren der Flüssigkeitszufuhr in das Steigrohr umfassen dem Stand der Technik entsprechende Hydranten eine über ein Betätigungselement bedienbare Absperrvorrichtung, wie beispielsweise ein Kolbenventil. Herkömmliche Absperrvorrichtungen werden in der Regel derart betätigt, dass ein Absperrelement gegen den Flüssigkeitsdruck bewegt und auf einen Ventilsitz aufgepresst wird. Das Überwinden der vom Flüssigkeitsdruck ausgehenden Kräfte erschwert die Bedienung. Zudem werden in der Praxis durch die hohen Bedienkräfte auch der Ventilsitz und das Dichtelement übermäßig beansprucht, wodurch sich die Lebensdauer dieser Elemente reduziert. Darüber hinaus ist es bei Hydranten notwendig, eine Abdichtung über lange Zeit zu gewährleisten, was bei unter Druck stehenden Ventilsitzen ebenfalls problematisch sein kann.In order to establish or shut off the liquid supply into the riser pipe, hydrants corresponding to the prior art comprise a shut-off device, such as a piston valve, which can be operated via an actuating element. Conventional shut-off devices are usually actuated in such a way that a shut-off element is moved against the liquid pressure and pressed onto a valve seat. Overcoming the forces from fluid pressure makes operation difficult. In addition, in practice, due to the high operating forces, the valve seat and the Sealing element subjected to excessive stress, which reduces the service life of these elements. In addition, with hydrants it is necessary to ensure a long-term seal, which can also be problematic if the valve seats are under pressure.

Herkömmliche Hydranten verfügen auch über eine Entleerungsleitung, die eine Entleerung des Steigrohrs ermöglicht, wenn die Flüssigkeitszufuhr abgesperrt ist. Dies insbesondere, um zu verhindern, dass im Steigrohr verbleibende Flüssigkeit bzw. Eis zu einer Beschädigung des Hydranten führt. Als Flüssigkeiten im Sinne der Erfindung gelten insbesondere flüssige Stoffe wie Wasser, fließfähige Suspensionen, fließfähige Schäume oder dergleichen.Conventional hydrants also have a drain line that allows the riser to drain when the liquid supply is shut off. This in particular to prevent liquid or ice remaining in the riser pipe from damaging the hydrant. Liquids in the context of the invention are in particular liquid substances such as water, free-flowing suspensions, free-flowing foams or the like.

Aufgabe der Erfindung ist es nun, einen Hydranten bereitzustellen, dessen Bedienbarkeit und Sicherheit gegenüber herkömmlichen Hydranten verbessert ist.The object of the invention is now to provide a hydrant whose operability and safety is improved compared to conventional hydrants.

Die erfindungsgemäße Aufgabe wird durch die Merkmale des unabhängigen Patentanspruchs gelöst.The object according to the invention is achieved by the features of the independent patent claim.

Die Erfindung betrifft einen Hydranten, umfassend:

  • ein Steigrohr,
  • eine Absperrvorrichtung mit einem Absperrelement zum wahlweisen Öffnen oder Schließen der Flüssigkeitszufuhr aus einer unterirdisch verlaufenden Flüssigkeitsleitung in das Steigrohr,
  • eine Entleerungsleitung zur Entleerung des Steigrohrs bei geschlossener Absperrvorrichtung,
  • und ein Betätigungselement zur Betätigung der Absperrvorrichtung.
The invention relates to a hydrant comprising:
  • a riser,
  • a shut-off device with a shut-off element for selectively opening or closing the liquid supply from a liquid line running underground into the riser pipe,
  • a drain line for draining the riser pipe when the shut-off device is closed,
  • and an actuator for actuating the shut-off device.

Es ist vorgesehen, dass das Absperrelement um eine Drehachse drehbar gelagert ist, dass das Absperrelement wahlweise eine erste Drehstellung aufweist, in der die Flüssigkeitszufuhr aus der Flüssigkeitsleitung in das Steigrohr durch das Absperrelement geschlossen ist und die Entleerungsleitung geöffnet ist, und dass das Absperrelement wahlweise eine zweite Drehstellung aufweist, in der dieIt is provided that the shut-off element is rotatably mounted about an axis of rotation, that the shut-off element optionally has a first rotational position in which the liquid supply from the liquid line into the riser pipe is closed by the shut-off element and the drain line is open, and that the shut-off element optionally has a has a second rotational position in which the

Flüssigkeitszufuhr aus der Flüssigkeitsleitung in das Steigrohr durch das Absperrelement geöffnet ist und die Entleerungsleitung geschlossen ist.Liquid supply from the liquid line is opened in the riser through the shut-off and the drain line is closed.

Gegebenenfalls ist vorgesehen, dass die Entleerungsleitung in der zweiten Drehstellung durch das Absperrelement geschlossen ist, und insbesondere dass die Entleerungsleitung in der ersten Drehstellung durch das Absperrelement freigegeben ist.If necessary, it is provided that the drain line is closed by the shut-off element in the second rotary position, and in particular that the drain line is released by the shut-off element in the first rotary position.

Gegebenenfalls ist vorgesehen, dass das Absperrelement zumindest abschnittsweise einer rotationskörperförmigen Fläche folgt, deren Rotationsachse konzentrisch mit der Drehachse verläuft.If necessary, it is provided that the shut-off element follows, at least in sections, a surface in the form of a body of revolution, the axis of rotation of which runs concentrically with the axis of rotation.

Gegebenenfalls ist vorgesehen, dass das Absperrelement zylinderförmig und/oder glockenförmig ausgebildet ist, dass das Absperrelement in seinem Mantel mindestens eine Durchgangsöffnung zum Öffnen der Flüssigkeitszufuhr und einen durchgehenden Bereich zum Schließen der Flüssigkeitszufuhr aufweist.If necessary, it is provided that the shut-off element is cylindrical and/or bell-shaped, that the shut-off element has at least one through-opening in its jacket for opening the liquid supply and a continuous area for closing the liquid supply.

Gegebenenfalls ist vorgesehen, dass das Absperrelement mindestens eine Freistellung zum Öffnen der Entleerungsleitung und einen durchgehenden Bereich zum Schließen der Entleerungsleitung aufweist, und insbesondere dass die Freistellung zum Öffnen der Entleerungsleitung und der durchgehenden Bereich zum Schließen der Entleerungsleitung in dem Mantel vorgesehen ist oder ein Teil des Mantels ist.If necessary, it is provided that the shut-off element has at least one clearance for opening the drain line and a continuous area for closing the drain line, and in particular that the clearance for opening the drain line and the continuous area for closing the drain line is provided in the casing or is a part of the coat is.

Gegebenenfalls ist vorgesehen, dass eine Zuführungsleitung zur Zuführung der Flüssigkeit in das Steigrohr vorgesehen ist, dass sich die Zuführungsleitung stutzenförmig in das Steigrohr erstreckt, dass die Zuführungsleitung, insbesondere ihre Mantelfläche, eine Zuführungsöffnung aufweist, und dass die Zuführungsöffnung in der ersten Drehstellung des Absperrelements durch das Absperrelement, insbesondere durch den durchgehenden Bereich zum Schließen der Flüssigkeitszufuhr, verschlossen ist.If necessary, it is provided that a supply line is provided for supplying the liquid into the riser pipe, that the supply line extends into the riser pipe in the form of a socket, that the supply line, in particular its lateral surface, has a supply opening, and that the supply opening passes through in the first rotary position of the shut-off element the shut-off element is closed, in particular by the continuous area for closing the liquid supply.

Gegebenenfalls ist vorgesehen, dass eine Zuführungsleitung zur Zuführung der Flüssigkeit in das Steigrohr vorgesehen ist.If necessary, it is provided that a feed line is provided for feeding the liquid into the riser pipe.

Gegebenenfalls ist vorgesehen, dass sich die Zuführungsleitung stutzenförmig in das Steigrohr erstreckt.If necessary, it is provided that the feed line extends in the form of a socket into the riser pipe.

Gegebenenfalls ist vorgesehen, dass die Zuführungsleitung, insbesondere in ihrer Mantelfläche, eine Zuführungsöffnung aufweist.If necessary, it is provided that the feed line has a feed opening, in particular in its lateral surface.

Gegebenenfalls ist vorgesehen, dass die Durchgangsöffnung des Absperrelements und die Zuführungsöffnung in der zweiten Drehstellung des Absperrelements derart zueinander positioniert sind, dass die Flüssigkeitszufuhr in das Steigrohr geöffnet ist.If necessary, it is provided that the passage opening of the shut-off element and the supply opening are positioned relative to one another in the second rotational position of the shut-off element in such a way that the liquid supply into the riser pipe is opened.

Es ist vorgesehen, dass das Betätigungselement mit dem Absperrelement über ein Getriebe und insbesondere auch über eine Welle drehbar gekoppelt ist.Provision is made for the actuating element to be rotatably coupled to the shut-off element via a gear and in particular also via a shaft.

Erfindungsgemäß ist vorgesehen, dass das Getriebe eine Untersetzung aufweist, durch die bei einer Drehung des Betätigungselements um einen Betätigungswinkel das Absperrelement um einen Absperrwinkel gedreht wird, der kleiner ist als der Betätigungswinkel.According to the invention, it is provided that the transmission has a gear reduction by which, when the actuating element is rotated by an actuating angle, the shut-off element is rotated by a shut-off angle that is smaller than the actuating angle.

Gegebenenfalls ist vorgesehen, dass die Untersetzung zwischen 1:10 bis 1:50, vorzugsweise 1:40 beträgt.If necessary, it is provided that the reduction is between 1:10 and 1:50, preferably 1:40.

Gegebenenfalls ist vorgesehen, dass das Getriebe mindestens eine Kulisse umfasst. Gegebenenfalls ist vorgesehen, dass das Getriebe ein mit der Kulisse in Wirkkontakt stehendes Abtastelement umfasst.If necessary, it is provided that the transmission comprises at least one connecting link. If necessary, it is provided that the transmission includes a scanning element that is in operative contact with the connecting link.

Gegebenenfalls ist vorgesehen, dass das Getriebe einen Spindelantrieb zur Bewegung des Abtastelements entlang der Drehachse umfasst.If necessary, it is provided that the transmission includes a spindle drive for moving the scanning element along the axis of rotation.

Gegebenenfalls ist vorgesehen, dass die Kulisse schräg und/oder schraubenförmig zur Drehachse verläuft.If necessary, it is provided that the connecting link runs obliquely and/or helically to the axis of rotation.

Gegebenenfalls ist vorgesehen, dass das Abtastelement derart gelagert ist, dass es bei einer Bewegung entlang der Drehachse und entlang der Kulisse um die Drehachse (6) verschwenkt wird.If necessary, it is provided that the scanning element is mounted in such a way that it is pivoted about the axis of rotation (6) when it moves along the axis of rotation and along the connecting link.

Gegebenenfalls ist vorgesehen, dass das Abtastelement zur Betätigung der Absperrvorrichtung mit dem Absperrelement drehverbunden bzw. drehgekoppelt ist. Gegebenenfalls ist vorgesehen, dass die Kulisse als in einer Hülse angeordnete schräg oder schraubenförmig verlaufende Nut ausgebildet ist, und dass insbesondere mehrere derartiger Nuten in der Hülse vorgesehen sind, die bei einer Bewegung des Abtastelements entlang der Drehachse die Abtastelemente um die Drehachse verdrehen.If necessary, it is provided that the sensing element is rotationally connected or rotationally coupled to the shut-off element for actuating the shut-off device. If necessary, it is provided that the connecting link is designed as an oblique or helical groove arranged in a sleeve, and that in particular several such grooves are provided in the sleeve, which rotate the scanning elements about the axis of rotation when the scanning element moves along the axis of rotation.

Gegebenenfalls ist vorgesehen, dass die Welle eine veränderbare Länge aufweist und insbesondere teleskopisch ausgebildet ist.If necessary, it is provided that the shaft has a variable length and, in particular, is designed to be telescopic.

Gegebenenfalls ist vorgesehen, dass das Steigrohr eine veränderbare Länge aufweist und insbesondere teleskopisch ausgebildet ist.If necessary, it is provided that the riser pipe has a changeable length and, in particular, is designed to be telescopic.

Durch die erfindungsgemäße Konstruktion wird eine Absperrvorrichtung geschaffen, deren Absperrelement nicht gegen den Flüssigkeitsdruck bewegt werden muss, um eine Absperrung des Hydranten herbeizuführen. So ist das Absperrelement ein drehbar gelagertes Absperrelement, das zumindest abschnittsweise einer rotationskörperförmigen Fläche folgt, wobei die Rotationsachse der Fläche konzentrisch mit der Drehachse der Bewegung des Absperrelements verläuft. Im Gegensatz zu herkömmlichen Ventilen wird durch diese Form der Absperrvorrichtung zur Absperrung eine Bewegung des Absperrelements im Wesentlichen normal zur Strömungsrichtung der austretenden Flüssigkeit ausgeführt. Dadurch können die zum Absperren benötigten Kräfte reduziert werden.The construction according to the invention creates a shut-off device whose shut-off element does not have to be moved against the liquid pressure in order to shut off the hydrant. The shut-off element is a rotatably mounted shut-off element which at least partially follows a surface in the shape of a body of revolution, the axis of rotation of the surface running concentrically with the axis of rotation of the movement of the shut-off element. In contrast to conventional valves, a movement of the shut-off element is carried out essentially normal to the direction of flow of the escaping liquid by this form of shut-off device for shut-off. As a result, the forces required for shutting off can be reduced.

Überdies wirkt auch im abgesperrten Zustand der Flüssigkeitsdruck bevorzugt normal zur Bewegungsrichtung des Absperrelements, insbesondere zum einzigen Freiheitsgrad des Absperrelements, womit diese Kräfte nicht in oder gegen die Bewegungsrichtung des Absperrelements sondern im Wesentlichen normal zu dieser verlaufen. Dadurch ist einerseits die Bedienbarkeit beim Öffnen und Schließen, andererseits aber auch die Zuverlässigkeit der Absperrung verbessert.Moreover, the liquid pressure acts preferably normal to the direction of movement of the shut-off element even in the shut-off state, in particular to the only degree of freedom of the shut-off element, so that these forces are not in or against the Movement direction of the shut-off element but run essentially normal to this. As a result, on the one hand, the operability when opening and closing, on the other hand, the reliability of the barrier is improved.

Das Absperrelement der Absperrvorrichtung weist zumindest zwei Drehstellungen auf, in die es wahlweise bewegt werden kann. In einer ersten Drehstellung ist die Flüssigkeitszufuhr aus der Flüssigkeitsleitung in das Steigrohr durch das Absperrelement geschlossen. In der zweiten Drehstellung ist die Flüssigkeitszufuhr aus der Flüssigkeitsleitung in das Steigrohr geöffnet. Zudem gibt es gegebenenfalls auch mindestens eine Zwischenstellung zwischen der ersten und der zweiten Drehstellung, in der eine Öffnung nur teilweise erfolgt, womit beispielsweise der Durchfluss bzw. der Volumenstrom reguliert werden kann.The shut-off element of the shut-off device has at least two rotational positions into which it can be selectively moved. In a first rotary position, the liquid feed from the liquid line into the riser pipe is closed by the shut-off element. In the second rotary position, the liquid supply from the liquid line into the riser pipe is open. In addition, there may also be at least one intermediate position between the first and the second rotational position, in which an opening occurs only partially, with which, for example, the flow or the volume flow can be regulated.

Insbesondere umfasst der Hydrant eine Zuführungsleitung, die beispielsweise einen rohrförmigen, runden Querschnitt aufweist und stutzenförmig in das Steigrohr ragt. Die Zuführungsleitung umfasst eine Zuführungsöffnung, die beispielsweise den Mantel der Zuführungsleitung durchsetzt. Die Zuführungsleitung ist in dieser Ausführungsform bevorzugt rohrförmig mit einem runden Rohrquerschnitt ausgebildet, wobei die Zuführungsöffnung als durch den Mantel des Rohrs verlaufende Durchgangsöffnung ausgebildet ist.In particular, the hydrant includes a supply line, which has a tubular, round cross section, for example, and protrudes into the riser pipe in the form of a socket. The feed line includes a feed opening which, for example, passes through the casing of the feed line. In this embodiment, the supply line is preferably tubular with a round tube cross-section, the supply opening being designed as a through-opening running through the jacket of the tube.

Das Absperrelement kann beispielsweise rotationskörperförmig, hohlzylinderförmig, rohrförmig, ringförmig oder glockenförmig ausgebildet sein und die Zuführungsleitung von außen umgreifen oder auch innerhalb der Zuführungsleitung angeordnet sein. Dadurch, dass das Absperrelement in seinem Mantel eine Durchgangsöffnung und einen durchgehenden Bereich aufweist, kann durch Verdrehen des Absperrelements ein Öffnen bzw. ein Schließen der Flüssigkeitszufuhr bewirkt werden.The shut-off element can, for example, be in the form of a rotary body, a hollow cylinder, a tube, a ring or a bell and can encompass the supply line from the outside or can also be arranged inside the supply line. Due to the fact that the shut-off element has a through-opening and a continuous area in its casing, the liquid supply can be opened or closed by rotating the shut-off element.

Wird der durchgehende Bereich des Absperrelements vor die Zuführungsöffnung der Zuführungsleitung gedreht, so ist die Zuführungsöffnung durch den durchgehenden Bereich des Absperrelements verschlossen. Wird das Absperrelement aus dieser ersten Drehstellung verdreht, so kommt es in einer Zwischenstellung zuerst zu einer Überschneidung der Durchgangsöffnung und der Zuführungsöffnung, womit ein gewisser Volumenstrom an Flüssigkeit in das Steigrohr eintreten kann. Wird das Absperrelement weiter bewegt, so wird die Überschneidung der Durchgangsöffnung und der Zuführungsöffnung immer größer, womit auch der eintretende Volumenstrom erhöht wird.If the continuous area of the shut-off element is rotated in front of the feed opening of the feed line, the feed opening is closed by the continuous area of the shut-off element. If the shut-off element is rotated out of this first rotational position, the through-opening and the feed opening first overlap in an intermediate position, certain volume flow of liquid can enter the riser pipe. If the shut-off element is moved further, the overlapping of the passage opening and the feed opening becomes larger and larger, which also increases the volume flow that occurs.

In der komplett geöffneten Stellung liegt die Durchgangsöffnung des Absperrelements bevorzugt über der oder konzentrisch zur Zuführungsöffnung der Zuführungsleitung.In the completely open position, the passage opening of the shut-off element is preferably above or concentric with the supply opening of the supply line.

Zudem ist erfindungsgemäß vorgesehen, dass auch die Entleerungsleitung durch die Betätigung des Absperrelements betätigt wird. So weist das Absperrelement eine Freistellung zum Öffnen der Entleerungsleitung und einer durchgehenden Bereich zum Schließen der Entleerungsleitung auf.In addition, it is provided according to the invention that the drain line is also actuated by actuating the shut-off element. The shut-off element has a clearance for opening the drain line and a continuous area for closing the drain line.

Die Entleerungsleitung ist bevorzugt im unteren Bereich des Steigrohrs angeordnet, um eine Entleerung, insbesondere eine vollständige Entleerung, des Steigrohrs zu ermöglichen.The drain line is preferably arranged in the lower region of the riser pipe in order to allow the riser pipe to be emptied, in particular completely emptied.

Bevorzugt sind diese Elemente derart am Absperrelement angeordnet, dass die Entleerungsleitung geschlossen ist, wenn die Flüssigkeitszufuhr in das Steigrohr geöffnet ist, und dass die Entleerungsleitung geöffnet ist, wenn die Flüssigkeitszufuhr in das Steigrohr verschlossen ist. Dadurch kann eine selbsttätige Entleerung des Steigrohrs bewirkt werden, wenn die Flüssigkeitszufuhr gestoppt ist.These elements are preferably arranged on the shut-off element in such a way that the drain line is closed when the liquid feed into the riser pipe is open, and that the drain line is open when the liquid feed into the riser pipe is closed. As a result, the riser pipe can be emptied automatically when the liquid supply is stopped.

Das Betätigungselement ist mit dem Absperrelement über ein Getriebe gekoppelt. Dies bedeutet, dass entlang des vom Betätigungselement zum Absperrelement wirkenden Kraft- bzw. Drehmomentverlaufs ein Getriebe angeordnet ist. Entlang dieses Antriebsstrangs zur Betätigung des Absperrelements können neben einem Getriebe auch noch eine oder mehrere Wellen oder andere Elemente, wie beispielsweise Kupplungen, teleskopische Verbindungen und/oder Steckverbindungen vorgesehen sein.The actuating element is coupled to the shut-off element via a gear. This means that a gear is arranged along the course of force or torque acting from the actuating element to the shut-off element. In addition to a gear, one or more shafts or other elements such as clutches, telescopic connections and/or plug-in connections can also be provided along this drive train for actuating the shut-off element.

Das Getriebe weist eine Untersetzung auf. Dies bedeutet, dass bei einer Drehung des Betätigungselements um einen gewissen Betätigungswinkel das Absperrelement um einen Absperrwinkel gedreht wird, wobei der Absperrwinkel jedoch kleiner ist als der Betätigungswinkel. Eine beispielhafte Untersetzung beträgt 1:40. Dies bedeutet, dass bei zehn Umdrehungen des Betätigungselements das Absperrelement um eine Viertelumdrehung, also um 90°, verdreht wird.The gearbox has a reduction. This means that when the actuating element is rotated by a certain actuating angle, the Shut-off element is rotated by a shut-off angle, but the shut-off angle is smaller than the operating angle. An example reduction is 1:40. This means that with ten rotations of the actuating element, the shut-off element is rotated by a quarter of a rotation, ie by 90°.

Bevorzugt ist zur Verlagerung des Absperrelements von der ersten Drehstellung in die zweite Drehstellung eine Verschwenkung des Absperrelements um 90° vonnöten.Pivoting of the shut-off element by 90° is preferably required to move the shut-off element from the first rotational position into the second rotational position.

Gemäß weiterer Ausführungsformen kann die Verschwenkung von der ersten Drehstellung in die zweite Drehstellung etwa 45°, etwa 90° oder etwa 180° betragen.According to further embodiments, the pivoting from the first rotary position to the second rotary position can be about 45°, about 90° or about 180°.

Grundsätzlich kann hierfür jedes Getriebe eingesetzt werden, das den technischen Anforderungen bezüglich Untersetzung, Standzeit, Drehmoment etc. entspricht. Ein beispielhaftes Getriebe umfasst einen Spindelantrieb, eine Kulisse und ein Abtastelement.In principle, any gear that meets the technical requirements in terms of gear reduction, service life, torque, etc. can be used for this. An exemplary transmission includes a spindle drive, a gate and a scanning element.

Durch das Betätigungselement kann eine Spindel angetrieben werden, durch die eine Kulisse entlang der Drehachse linear und insbesondere translatorisch verschoben wird. Die Kulisse ist beispielsweise eine schräg- oder schraubförmig verlaufende Nut oder ein schräg- oder schraubförmig verlaufender Steg, die /der beispielsweise in der Innenseite einer Hülse vorgesehen ist. Bei der Bewegung entlang der Drehachse wird die Kulisse bevorzugt gerade geführt und daher nicht verdreht. Ferner umfasst dieses Getriebe mindestens ein Abtastelement, das derart mit der Kulisse in Wirkkontakt steht, dass es bei dem Verschieben der Kulisse um die oder um eine Drehachse verschwenkt wird. Die Verschwenkung des Abtastelements erfolgt im Vergleich zur Betätigung des Betätigungselements jedoch in stark eingeschränktem Umfang, was auf die Untersetzung zurückzuführen ist. Das Abtastelement ist in weiterer Folge mit dem Absperrelement gekoppelt, womit bei einer Verdrehung/Verschwenkung des Abtastelements auch das Absperrelement verdreht/verschwenkt wird.A spindle can be driven by the actuating element, by means of which a connecting link is displaced linearly and, in particular, translationally along the axis of rotation. The connecting link is, for example, an oblique or helical groove or an oblique or helical web which is provided, for example, in the inside of a sleeve. When moving along the axis of rotation, the connecting link is preferably guided in a straight line and is therefore not twisted. Furthermore, this transmission comprises at least one sensing element, which is in operative contact with the link in such a way that it is pivoted about or about an axis of rotation when the link is moved. However, the pivoting of the scanning element takes place to a very limited extent compared to the actuation of the actuating element, which is due to the gear reduction. The scanning element is subsequently coupled to the blocking element, with the result that the blocking element is also rotated/pivoted when the scanning element is rotated/pivoted.

Alternativ kann bei einer Verdrehung des Betätigungselements über den Spindelantrieb das Abtastelement entlang der Drehachse bewegt werden. Die Kulisse und/oder die Hülse bleiben dabei bevorzugt starr bzw. unbewegt. Wird das Abtastelement entlang der Drehachse verschoben, so werden die Abtastelemente entlang der Kulisse bewegt und/oder geführt. Da die Kulisse schraubförmig bzw. schräg angeordnet ist, kommt es hierbei zu einer Verschwenkung bzw. Verdrehung des Abtastelements bzw. der Abtastelemente. Diese Verschwenkung wird in weiterer Folge auf das Absperrelement übertragen, wobei die Übertragung bevorzugt über eine Welle geschieht.Alternatively, when the actuating element is rotated, the scanning element can be moved along the axis of rotation via the spindle drive. The connecting link and/or the sleeve preferably remain rigid or unmoved. If the scanning element is displaced along the axis of rotation, the scanning elements are moved along the connecting link and/or guided. Since the connecting link is arranged in a helical or oblique manner, this results in a pivoting or twisting of the scanning element or the scanning elements. This pivoting is subsequently transferred to the shut-off element, with the transfer preferably taking place via a shaft.

Zum Ausgleich der Verschiebung der Kulisse entlang der Drehachse ist die Welle oder zumindest eine Welle des Hydranten längenverstellbar und insbesondere teleskopisch ausgebildet. Bevorzugt ist die Welle zwischen dem Abtastelement und dem Absperrelement vorgesehen und koppelt das Absperrelement bevorzugt starr mit dem Abtastelement.To compensate for the displacement of the link along the axis of rotation, the shaft or at least one shaft of the hydrant is length-adjustable and, in particular, is telescopic. The shaft is preferably provided between the scanning element and the blocking element and preferably rigidly couples the blocking element to the scanning element.

Zudem kann durch diese Konstruktion auch das Steigrohr längenverstellbar ausgebildet sein, wobei sich bei einer Längenverstellung des Steigrohrs die Länge der Welle automatisch bzw. selbsttätig mitändert. Beispielsweise kann das Steigrohr hierzu mehrteilig ausgebildet sein, wobei der eine Teil gegenüber dem anderen Teil entlang der Drehachse verlagerbar angeordnet ist. Die Verschiebung kann beispielsweise über eine Schraubverbindung ermöglicht sein. Die Längenverstellung erfolgt bevorzugt entlang der DrehachseIn addition, this construction can also be used to adjust the length of the riser pipe, with the length of the shaft also changing automatically when the length of the riser pipe is adjusted. For example, the riser pipe can be designed in several parts for this purpose, with one part being arranged such that it can be displaced relative to the other part along the axis of rotation. The displacement can be made possible, for example, via a screw connection. The length is preferably adjusted along the axis of rotation

Durch die erfindungsgemäße Konstruktion muss zum Absperren der Flüssigkeitszufuhr die Flüssigkeitssäule nicht komprimiert oder verschoben werden. Vielmehr geschieht bei der erfindungsgemäßen Konstruktion die Absperrung ohne Volumensänderung und vereinfacht ausgedrückt durch Abschneiden des Flüssigkeitsstroms.Due to the construction according to the invention, the liquid column does not have to be compressed or displaced in order to shut off the liquid supply. Rather, with the construction according to the invention, the shut-off takes place without a change in volume and, to put it simply, by cutting off the liquid flow.

Durch die Verwendung eines Getriebes mit einer Untersetzung wird die nachteilige Wirkung von herkömmlichen Kugelhähnen unterbunden, bei denen durch zu schnelles Schließen oder Öffnen Druckschläge hervorgerufen werden, die bei einer langsamen Betätigung, wie sie durch das Getriebe hervorgerufen wird, nicht oder nur in stark vermindertem Ausmaß auftreten. Durch die Untersetzung kann die Schließgeschwindigkeit bei manueller Betätigung so weit herabgesetzt werden, dass sich Drucksteigerungen in vertretbaren Grenzen halten.The use of a gear with a gear reduction prevents the disadvantageous effect of conventional ball valves, in which pressure shocks are caused by closing or opening too quickly, which is not the case with slow actuation, as caused by the gear, or only to a greatly reduced extent appear. Due to the gear reduction, the closing speed can be reduced to such an extent during manual operation that pressure increases are kept within acceptable limits.

Durch die Längenverstellbarkeit des Steigrohrs ist es möglich, eine flexible Anpassung des Hydranten einerseits an die Lage der unterirdischen Flüssigkeitsleitung als auch an das Erdniveau durchzuführen. Hierbei sind zwei Abschnitte des Steigrohrs teleskopisch miteinander über ein Gewinde verbunden. Durch Drehen des Hydranten kann die Höhe noch am Einsatzort stufenlos angepasst werden. Feststehend bleibt bevorzugt das Außenrohr, was auch eine nachträgliche Höhenanpassung ermöglicht, ohne dass der Hydrant bis zum Boden freigegraben werden muss. Die Länge der innenliegenden Welle passt sich automatisch an die Längenveränderung an, ohne dass das System zerlegt oder ausgegraben werden muss.Due to the length adjustability of the riser pipe, it is possible to flexibly adapt the hydrant to the position of the underground liquid line as well as to to carry out the ground level. Here, two sections of the riser are telescopically connected to each other via a thread. By turning the hydrant, the height can be infinitely adjusted on site. The outer pipe preferably remains fixed, which also enables subsequent height adjustment without having to dig the hydrant down to the ground. The length of the internal shaft automatically adjusts to the change in length without having to disassemble or excavate the system.

Durch die Segmentbauweise der zahnstangenartigen Gewindesegmente werden die Reibkräfte und auch die notwendigen Fertigungsgenauigkeiten reduziert, sodass das System auch noch nach längeren Standzeiten leicht mit Handwerkzeugen arretiert bzw. betätigt werden kann.The segmented design of the rack-like thread segments reduces the frictional forces and also the necessary manufacturing accuracy, so that the system can be easily locked or operated with hand tools even after a long period of standstill.

Bevorzugt sind über den Umfang vier vertikal verlaufende zahnstangenartige Gewindesegmente verteilt. Diese greifen in Gewinde des jeweils anderen Teils ein.Four vertically running rack-like thread segments are preferably distributed over the circumference. These engage in the thread of the other part.

Bevorzugt ermöglicht die erfindungsgemäße Ausgestaltung eine schmiermittelfreie Mechanik zur Betätigung des Hydranten.The configuration according to the invention preferably enables a lubricant-free mechanism for actuating the hydrant.

Weitere Details der Konstruktion können den Figuren und den Patentansprüchen entnommen werden.

  • Fig. 1 zeigt eine Schnittdarstellung einer Ausführungsform eines erfindungsgemäßen Hydranten.
  • Fig. 2 zeigt eine Schrägansicht mit teilweise ausgeblendeten Komponenten, bei der sich das Absperrelement in der ersten Drehstellung befindet.
  • Fig. 3 zeigt eine Schrägansicht mit teilweise ausgeblendeten Komponenten, bei der sich das Absperrelement in seiner zweiten Drehstellung befindet.
Further details of the construction can be found in the figures and the claims.
  • 1 shows a sectional representation of an embodiment of a hydrant according to the invention.
  • 2 shows an oblique view with partially hidden components, in which the shut-off element is in the first rotational position.
  • 3 shows an oblique view with partially hidden components, in which the shut-off element is in its second rotational position.

Die Figuren 4a und 4b zeigen Schnittdarstellungen eines exemplarischen Getriebes in zwei unterschiedlichen Stellungen.the figures 4a and 4b show sectional views of an exemplary transmission in two different positions.

Wenn nicht anders angegeben, so entsprechen die Bezugszeichen folgenden Komponenten:
Steigrohr 1, Absperrvorrichtung 2, Absperrelement 3, Entleerungsleitung 4, Betätigungselement 5, Drehachse 6, rotationskörperförmige Fläche 7, Mantel 8, Durchgangsöffnung 9, durchgehender Bereich (zum Schließen der Flüssigkeitszufuhr) 10, Freistellung 11, durchgehender Bereich (zum Schließen der Entleerungsleitung) 12, Zuführungsleitung 13, Zuführungsöffnung 14, Getriebe 15, Welle 16, Spindelantrieb 17, Kulisse 18, Abtastelement 19, Hülse 20, Verstellgewinde 21.Unless otherwise specified, the reference numbers correspond to the following components:
Riser pipe 1, shut-off device 2, shut-off element 3, drain line 4, actuating element 5, axis of rotation 6, rotating body-shaped surface 7, jacket 8, through opening 9, continuous area (to close the liquid supply) 10, clearance 11, continuous area (to close the drain line) 12 , supply line 13, supply opening 14, gear 15, shaft 16, spindle drive 17, connecting link 18, scanning element 19, sleeve 20, adjusting thread 21.

Fig. 1 zeigt eine Schnittdarstellung einer Ausführungsform eines erfindungsgemäßen Hydranten, wobei die Darstellung an zwei Stellen unterbrochen ist, sodass maßgebliche Komponenten dargestellt werden können, ohne dass die volle Länge des Hydranten abgebildet werden muss. 1 Figure 12 shows a sectional view of an embodiment of a hydrant according to the invention, the view being broken in two places so that relevant components can be shown without having to show the full length of the hydrant.

Der Hydrant umfasst ein Steigrohr 1, das in der vorliegenden Ausführungsform mehrteilig ausgebildet ist. Dieses Steigrohr 1 erstreckt sich im Wesentlichen von einem Betätigungselement 5 bis zur Zuführungsleitung 13, die einseitig stutzenförmig in das Steigrohr 1 ragt und an ihrer anderen Seite mit einer unterirdisch verlaufenden Flüssigkeitsleitung verbunden werden kann. Die Verbindung kann in herkömmlicher Weise, beispielsweise über eine Rohrkupplung und insbesondere über eine Flanschverbindung, erfolgen.The hydrant comprises a riser pipe 1, which is designed in several parts in the present embodiment. This riser pipe 1 extends essentially from an actuating element 5 to the supply line 13, which protrudes into the riser pipe 1 in the form of a socket on one side and can be connected to a liquid line running underground on its other side. The connection can be made in a conventional manner, for example via a pipe coupling and in particular via a flange connection.

Der Hydrant umfasst zudem eine Absperrvorrichtung 2. Die Absperrvorrichtung 2 umfasst ein Absperrelement 3, das in der vorliegenden Ausführungsform glockenförmig ausgebildet ist und einen Mantel 8 aufweist, wobei der Mantel zumindest an seiner inneren Mantelfläche von einer rotationskörperförmigen Fläche 7 begrenzt ist. Im zusammenlaufenden Bereich der Glockenform ist das Absperrelement 3 mit einer Welle 16 verbunden. Diese Welle 16 dient der Koppelung bzw. der Drehmomentübertragung von dem Betätigungselement 5 auf das Absperrelement 3.The hydrant also includes a shut-off device 2. The shut-off device 2 includes a shut-off element 3, which is bell-shaped in the present embodiment and has a jacket 8, the jacket being delimited at least on its inner lateral surface by a surface 7 in the shape of a body of revolution. The shut-off element 3 is connected to a shaft 16 in the converging area of the bell shape. This shaft 16 is used for the coupling or the transmission of torque from the actuating element 5 to the shut-off element 3.

In der vorliegenden Ausführungsform ist die Welle 16 mehrteilig ausgebildet. Insbesondere ist die Welle 16 teleskopisch ausgebildet und umfasst zwei ineinander schiebbare Teilbereiche. Dabei sind die Teile der Welle 16 derart miteinander gekoppelt, dass sie entlang der Längserstreckung, insbesondere entlang der Drehachse 6 einen Freiheitsgrad gegenüber einander aufweisen und teleskopisch gegenüber einander verschoben werden. Dieser Freiheitsgrad bzw. diese Bewegbarkeit kann gegebenenfalls über ein geeignetes Mittel wie beispielsweise über eine Klemmschraube arretiert werden. Bei einer Drehung des einen Teils der Welle 16 gegenüber dem anderen Teil ist eine formschlüssige oder kraftschlüssige Kopplung gegeben, sodass die Welle 16 ihrer Funktion entsprechend ein Drehmoment übertragen kann. Beispielsweise sind die Teile der Welle 16 nicht rund sondern mit einer polygonförmige Steckverbindung ausgestattet, womit eine Drehverbindung hergestellt werden kann.In the present embodiment, the shaft 16 has a multi-part design. In particular, the shaft 16 is telescopic and comprises two sections that can be slid into one another. The parts of the shaft 16 are coupled to one another in such a way that they have a degree of freedom in relation to one another along the longitudinal extension, in particular along the axis of rotation 6, and can be displaced telescopically in relation to one another. This degree of freedom or this mobility can optionally be locked using a suitable means such as a clamping screw. When one part of the shaft 16 rotates relative to the other part, there is a positive or non-positive coupling, so that the shaft 16 can transmit a torque in accordance with its function. For example, the parts of the shaft 16 are not round but are equipped with a polygonal plug-in connection, with which a rotary connection can be produced.

Der Hydrant der Fig. 1 umfasst eine Entleerungsleitung 4, die zur Entleerung des Steigrohrs 1 ausgebildet ist. Der Hydrant umfasst bevorzugt im oberen Bereich des Steigrohrs 1 einen Anschluss bzw. Abgang, durch den das in das Steigrohr 1 strömende Flüssigkeits entnommen werden kann.The hydrant of 1 includes a drain line 4, which is designed to drain the riser pipe 1. The hydrant preferably comprises a connection or outlet in the upper region of the riser pipe 1, through which the liquid flowing into the riser pipe 1 can be removed.

Zur Betätigung der Absperrvorrichtung 2 kann das Absperrelement 3 in unterschiedliche Drehstellungen verlagert werden, wie in den nachfolgenden Figuren im Detail erörtert wird. Die Verlagerung erfolgt durch Drehung des Absperrelements 3 um die Drehachse 6. Hierbei kann die Zuführungsöffnung 14 der Zuführungsleitung 13 wahlweise durch das Absperrelement 3 verschlossen oder geöffnet werden.To actuate the shut-off device 2, the shut-off element 3 can be shifted into different rotational positions, as will be explained in detail in the following figures. The displacement takes place by rotating the shut-off element 3 about the axis of rotation 6. In this case, the supply opening 14 of the supply line 13 can be optionally closed or opened by the shut-off element 3.

Zur Betätigung des Absperrelements 3 ist entlang des Kraftverlaufs zwischen dem Betätigungselement 5 und dem Absperrelement 3 ein Getriebe 15 vorgesehen. Dieses Getriebe 15 umfasst in der vorliegenden Ausführungsform einen Spindelantrieb 17, eine Kulisse 18 und ein in dieser Darstellung nicht sichtbares Abtastelement 19.To actuate the shut-off element 3 , a gear 15 is provided along the path of force between the actuating element 5 and the shut-off element 3 . In the present embodiment, this transmission 15 comprises a spindle drive 17, a connecting link 18 and a scanning element 19, which is not visible in this illustration.

Fig. 2 zeigt eine Schrägansicht einer Ausführungsform eines erfindungsgemäßen Hydranten, insbesondere der Ausführungsform aus Fig. 1, bei der jedoch zur besseren Ersichtlichkeit einige Komponenten teilweise ausgeblendet sind. 2 shows an oblique view of an embodiment of a hydrant according to the invention, in particular the embodiment of FIG 1 , but with some components partially hidden for clarity.

Der Hydrant, insbesondere die Absperrvorrichtung 2, befindet sich in der ersten Drehstellung. In dieser ist die Flüssigkeitszufuhr abgesperrt. In dieser Drehstellung ist das Absperrelement 3 derart gegenüber der Zuführungsleitung 13 angeordnet, dass ein durchgehender Bereich 10 des Absperrelements 3, insbesondere ein durchgehender Bereich 10 des Mantels 8 des Absperrelements 3, die hier nicht sichtbare Zuführungsöffnung 14 der Zuführungsleitung 13 verschließt.The hydrant, in particular the shut-off device 2, is in the first rotational position. In this, the liquid supply is shut off. In this rotational position, the shut-off element 3 is arranged opposite the supply line 13 in such a way that a continuous region 10 of the shut-off element 3, in particular a continuous region 10 of the jacket 8 of the shut-off element 3, closes the supply opening 14 of the supply line 13 (not visible here).

Die Durchgangsöffnung 9 des Absperrelements 3 weist in dieser Stellung insbesondere keine Überschneidung mit der Zuführungsöffnung 14 auf. Das Absperrelement 3 weist eine rotationskörperförmige Fläche 7 auf, deren Rotationsachse mit der Drehachse 6 übereinstimmt. Dadurch kann durch Verdrehen bzw. Verschwenken des Absperrelements 3 eine geführte und insbesondere dichtende Relativbewegung zwischen dem Absperrelement 3 und der Zuführungsleitung 13 erfolgen. Das Absperrelement 3 und die Zuführungsleitung 13 sowie auch weitere Komponenten können Dichtungen umfassen, um die Dichtwirkung zu verbessern.In this position, the passage opening 9 of the shut-off element 3 in particular does not overlap with the feed opening 14 . The shut-off element 3 has a surface 7 in the form of a body of revolution, the axis of rotation of which coincides with the axis of rotation 6 . As a result, by turning or pivoting the shut-off element 3 , a guided and in particular sealing relative movement can take place between the shut-off element 3 and the feed line 13 . The shut-off element 3 and the supply line 13 as well as other components can include seals in order to improve the sealing effect.

Die Welle 16 ist in der vorliegenden Ausführungsform polygonförmig, insbesondere vierkantförmig ausgebildet, um eine Drehmomentübertragung zu ermöglichen, obwohl die Welle 16 teleskopisch und dadurch entlang der Drehachse 6 längenverstellbar ist.In the present embodiment, the shaft 16 is polygonal, in particular square, in order to enable torque transmission, although the shaft 16 is telescopic and thus length-adjustable along the axis of rotation 6 .

Der Hydrant der Fig. 2 umfasst eine Entleerungsleitung 4. Diese Entleerungsleitung 4 ist im unteren Bereich des Steigrohrs 1 angeordnet, um eine Entleerung, insbesondere eine vollständige Entleerung, des Steigrohrs 1 zu ermöglichen. Die Entleerungsleitung 4 kann durch Betätigung der Absperrvorrichtung 2 geöffnet und geschlossen werden.The hydrant of 2 comprises a drain line 4. This drain line 4 is arranged in the lower region of the riser pipe 1 in order to allow the riser pipe 1 to be emptied, in particular completely. The drain line 4 can be opened and closed by actuating the shut-off device 2 .

In der vorliegenden Stellung ist die Entleerungsleitung 4 geöffnet, sodass im Steigrohr 1 befindliche Flüssigkeit selbsttätig durch die Entleerungsleitung 4 austreten kann. Hierzu umfasst das Absperrelement 3 bzw. die Absperrvorrichtung 2 eine Freistellung 11, die in der vorliegenden Stellung im Bereich des Eintritts der Entleerungsleitung 4 angeordnet ist. In dieser Stellung ist die Entleerungsleitung 4 geöffnet. Zusätzlich umfasst die Absperrvorrichtung 2 jedoch auch einen durchgehenden Bereich 12 zum Schließen der Entleerungsleitung 4.In the present position, the drain line 4 is open, so that liquid in the riser pipe 1 can automatically escape through the drain line 4 . For this purpose, the shut-off element 3 or the shut-off device 2 comprises a clearance 11 which is arranged in the present position in the area of the inlet of the drain line 4 . In this position, the drain line 4 is open. In addition, however, the shut-off device 2 also includes a continuous area 12 for closing the drain line 4.

Das Steigrohr 1 ist mehrteilig ausgebildet, wodurch eine Längenverstellung des Steigrohrs 1 ermöglicht wird. Hierzu umfasst das Steigrohr 1 ein Verstellgewinde 21, das bei Verdrehen des einen Teils des Steigrohrs 1 gegenüber dem anderen Teil des Steigrohrs 1 eine Längenveränderung bewirkt.The riser pipe 1 is designed in several parts, which allows the length of the riser pipe 1 to be adjusted. For this purpose, the riser pipe 1 comprises an adjusting thread 21 which causes a change in length when one part of the riser pipe 1 is twisted relative to the other part of the riser pipe 1 .

Fig. 3 zeigt die Ausführungsform der Fig. 2 jedoch in der zweiten Drehstellung. In dieser Drehstellung ist die Flüssigkeitszufuhr in das Steigrohr 1 geöffnet. Dadurch kann Flüssigkeit von der nicht dargestellten unterirdischen Flüssigkeitsleitung durch die Zuführungsleitung 13 und deren Zuführungsöffnung 14 und dann durch die Durchgangsöffnung 9 des Absperrelements 3 der Absperrvorrichtung 2 in das Steigrohr 1 strömen. In dieser Drehstellung befindet sich die Durchgangsöffnung 9 des Absperrelements 3 im Bereich der Zuführungsöffnung 14 der Zuführungsleitung 13. 3 shows the embodiment of 2 but in the second rotary position. In this rotational position, the liquid supply to the riser pipe 1 is open. As a result, liquid can flow from the underground liquid line, not shown, through the supply line 13 and its supply opening 14 and then through the passage opening 9 of the shut-off element 3 of the shut-off device 2 into the riser pipe 1 . In this rotational position, the passage opening 9 of the shut-off element 3 is in the region of the supply opening 14 of the supply line 13.

Eine Flüssigkeitszufuhr ist insbesondere dann gegeben, wenn die Zuführungsöffnung 14 und die Durchgangsöffnung 9 eine Überschneidung aufweisen und damit einander überlappen. In der vorliegenden Drehstellung ist die Absperrvorrichtung 2 komplett geöffnet und die Durchgangsöffnung 9 befindet sich mittig über oder vor der Zuführungsöffnung 14, womit ein maximaler Querschnitt freigegeben ist.Liquid is supplied in particular when the supply opening 14 and the through-opening 9 overlap and thus overlap one another. In the present rotary position, the shut-off device 2 is completely open and the passage opening 9 is located centrally above or in front of the feed opening 14, which means that a maximum cross-section is released.

In dieser Drehstellung ist die Entleerungsleitung 4 dadurch verschlossen, dass der durchgehende Bereich 12 der Absperrvorrichtung 2 den Eintritt der Entleerungsleitung 4 verschließt.In this rotary position, the drain line 4 is closed in that the continuous area 12 of the shut-off device 2 closes the inlet of the drain line 4 .

Grundsätzlich erfolgt die Betätigung der Absperrvorrichtung 2 durch Verdrehung des Absperrelements 3, wobei zwischen der Drehstellung der Fig. 2 und der Drehstellung der Fig. 3 weitere Zwischenstellungen auftreten können, bei denen der Durchfluss bzw. der Volumenstrom gegenüber einem vollen Durchstrom verringert sein kann.Basically, the shut-off device 2 is actuated by rotating the shut-off element 3, wherein between the rotational position of the 2 and the rotational position of the 3 further intermediate positions can occur in which the flow or the volume flow can be reduced compared to a full flow.

Die Figuren 4a und 4b zeigen Schnittdarstellungen zur Erklärung der Funktion eines bevorzugten Getriebes 15. Das Getriebe 15 umfasst einen Spindelantrieb 17, der durch Betätigung bzw. Verdrehung des Betätigungselements 5 angetrieben wird.the figures 4a and 4b show sectional views to explain the function of a preferred gear 15. The gear 15 includes a spindle drive 17, which is driven by actuating or rotating the actuating element 5.

Bei einer Verdrehung des Betätigungselements 5 wird über den Spindelantrieb 17 das Abtastelement 19 entlang der Drehachse 6 bewegt. Die Kulisse 18 ist in der vorliegenden Ausführungsform in einer Hülse 20 vorgesehen, wobei durch Betätigung des Spindelantriebs 17 das Abtastelement 19 entlang der Drehachse 6 verschoben wird. Dabei wird das Abtastelement 19 entlang der Kulisse 18 bewegt, ohne dass die Hülse 20 oder die Kulisse 18 verdreht oder bewegt werden. Die Kulisse 18 ist in der vorliegenden Ausführungsform als schraubenförmige Nut im Inneren der Hülse 20 ausgebildet.When the actuating element 5 is rotated, the scanning element 19 is moved along the axis of rotation 6 via the spindle drive 17 . In the present embodiment, link 18 is provided in a sleeve 20 , actuation of spindle drive 17 displacing scanning element 19 along axis of rotation 6 . In this case, the scanning element 19 is moved along the link 18 without the sleeve 20 or the link 18 being rotated or moved. In the present embodiment, link 18 is designed as a helical groove inside sleeve 20 .

Zur Abtastung der Kulisse 18 ist zumindest ein Abtastelement 19 vorgesehen, wobei in der vorliegenden Ausführungsform zwei Abtastelemente 19 vorgesehen sind, die beidseitig an diametral gegenüberliegenden Seiten auskragen.At least one scanning element 19 is provided for scanning link 18, with two scanning elements 19 being provided in the present embodiment, which project on both sides on diametrically opposite sides.

Die Schnittebene ist in den Figuren 4a und 4b so gewählt, dass sie in beiden Darstellungen durch das Abtastelement 19 bzw. durch die Abtastelemente 19 verläuft. Wird nun das Abtastelement 19 entlang der Drehachse 6 verschoben, so werden die Abtastelemente 19 entlang der Kulisse 18 bewegt bzw. geführt. Da die Kulisse 18 schraubförmig bzw. schräg angeordnet ist, kommt es hierbei zu einer Verschwenkung bzw. Verdrehung der Abtastelemente 19. Diese Verschwenkung wird in weiterer Folge auf das Absperrelement 3 übertragen, wobei in der vorliegenden Ausführungsform die Übertragung über eine Welle 16 geschieht.The cutting plane is in the figures 4a and 4b selected so that it runs through the scanning element 19 or through the scanning elements 19 in both representations. If the scanning element 19 is now displaced along the axis of rotation 6, the scanning elements 19 are moved or guided along the connecting link 18. Since link 18 is arranged helically or obliquely, scanning elements 19 swivel or rotate.

In der Praxis geschieht die Betätigung eines erfindungsgemäßen Hydranten, insbesondere einer bevorzugten Ausführungsform eines erfindungsgemäßen Hydranten, wie folgt:
In einem ersten Schritt wird das Betätigungselement 5 betätigt. Gegebenenfalls ist es hierfür notwendig, eine Schutzkappe abzunehmen und insbesondere ein passendes Werkzeug zur Verdrehung des Betätigungselements 5 zu benutzen. Die Drehung des Betätigungselements 5 betätigt einen Spindelantrieb 17, der mindestens ein Abtastelement 19 entlang der Drehachse 6 verschiebt.In practice, a hydrant according to the invention, in particular a preferred embodiment of a hydrant according to the invention, is actuated as follows:
In a first step, the actuating element 5 is actuated. It may be necessary for this to remove a protective cap and, in particular, to use a suitable tool to rotate the actuating element 5 . The rotation of the actuating element 5 actuates a spindle drive 17 which displaces at least one scanning element 19 along the axis of rotation 6 .

Die Abtastelemente 19 werden durch die Bewegung entlang der Kulisse 18 um die Drehachse 6 verschwenkt. Durch die Verdrehung der Abtastelemente 19 und die Verbindung der Abtastelemente 19 mit dem Absperrelement 3 wird auch das Absperrelement 3 bewegt. Das Absperrelement 3 umfasst eine Durchgangsöffnung 9. Diese wird durch Verdrehung des Absperrelements 3 derart zu einer Zuführungsöffnung 14 einer Zuführungsleitung 13 verdreht, dass die Flüssigkeit durch die Zuführungsleitung 13 in das Steigrohr 1 des Hydranten eintreten kann.The scanning elements 19 are pivoted about the axis of rotation 6 by the movement along the connecting link 18 . By rotating the sensing elements 19 and connecting the sensing elements 19 to the shut-off element 3, the shut-off element 3 is also moved. The shut-off element 3 includes a through-opening 9. This is turned into a supply opening 14 of a supply line 13 by twisting the shut-off element 3 in such a way that the liquid can enter the riser pipe 1 of the hydrant through the supply line 13.

In weiterer Folge kann die Flüssigkeit aus dem Steigrohr 1 über eine geeignete Öffnung entnommen werden. Soll der Hydrant wieder abgesperrt werden, so wird das Betätigungselement 5 in die Gegenrichtung gedreht. Hierdurch wird, in analog zur zuvor beschriebenen Weise, die Absperrvorrichtung 2 wieder geschlossen. Gleichzeitig oder nach dem Schließen der Absperrvorrichtung 2 wird eine Entleerungsleitung 4 geöffnet. Insbesondere wird diese Entleerungsleitung 4 über eine im Absperrelement 3 vorgesehene Freistellung 11 geöffnet. Durch die Entleerungsleitung 4 kann das nach der Absperrung im Steigrohr 1 befindliche Flüssigkeit abgeleitet werden.Subsequently, the liquid can be removed from the riser pipe 1 through a suitable opening. If the hydrant is to be shut off again, the actuating element 5 is rotated in the opposite direction. As a result, the shut-off device 2 is closed again in a manner analogous to that described above. At the same time or after closing the shut-off device 2, a drain line 4 is opened. In particular, this drain line 4 is opened via a release 11 provided in the shut-off element 3 . The liquid in the riser pipe 1 after the shut-off can be drained off through the drain line 4 .

Gemäß einer bevorzugten Ausführungsform sind die Absperrvorrichtung 2 und das Getriebe 15 sowie die Welle 16 innerhalb des Steigrohrs 1 angeordnet, womit das Steigrohr 1 zusätzlich auch als Gehäuse für die Komponenten des Hydranten wirkt.According to a preferred embodiment, the shut-off device 2 and the gear 15 as well as the shaft 16 are arranged inside the riser pipe 1, whereby the riser pipe 1 also acts as a housing for the components of the hydrant.

Bevorzugt verlaufen die Drehachsen 6 des Absperrelements 3, des Spindelantriebs 17, des Abtastelements 19, des Absperrelements 3 und der Welle 16 koaxial.The axes of rotation 6 of the shut-off element 3, the spindle drive 17, the scanning element 19, the shut-off element 3 and the shaft 16 preferably run coaxially.

Claims (12)

  1. Hydrant, comprising:
    - an ascending pipe (1),
    - a blocking device (2) with a blocking element (3) to selectively open or close the fluid supply from a fluid conduit running underground to the ascending pipe (1),
    - a drain pipe (4) for draining the ascending pipe (1) when the blocking device (2) is closed,
    - and an actuation member (5) for actuating the blocking device (2),
    - wherein the blocking element (3) is rotatably mounted about a rotation axis (6),
    - wherein the blocking element (3) selectively has a first rotation position, in which the fluid supply from the fluid conduit into the ascending pipe (1) is closed by means of the blocking element (3) and the drain pipe (4) is open,
    - wherein the blocking element (3) selectively has a second rotation position, in which the fluid supply from the fluid conduit into the ascending pipe (1) is open by means of the blocking element (3) and the drain pipe (4) is closed,
    - and wherein the actuation member (5) is rotatably coupled with the blocking element (3) via a gear (15) and, in particular, via a shaft (16),
    characterized
    - in that the gear (15) has a gear ratio, by means of which, upon rotation of the actuating element (5) through an actuating angle, the blocking element (3) is rotated through a blocking angle which is smaller than the actuating angle.
  2. The hydrant according to claim 1, characterized
    - in that the drain pipe (4) in the second rotation position is closed by means of the blocking element (3),
    - and, in particular, in that the drain pipe (4) in the first rotation position is open by means of the blocking element (3).
  3. The hydrant according to claim 1 or 2, characterized in that the blocking element (3) follows at least sectionally a surface with the shape of a rotational body (7), the rotational axis of the surface running concentrically with the axis of rotation (6).
  4. The hydrant according to one of the preceding claims, characterized
    - in that the blocking element (3) is cylinder-shaped and/or bell-shaped,
    - in that the blocking element (3) has at least one through opening (9) in its mantle (8) to open the fluid supply and a continuous area (10) to close the fluid supply.
  5. The hydrant according to one of the preceding claims, characterized
    - in that the blocking element (3) has at least one release (11) to open the drain pipe (4) and a continuous area (12) to close the drain pipe (4),
    - and, in particular, in that the release (11) for opening the drain pipe (4) and the continuous area (12) for closing the drain pipe (4) are provided in the mantle (8) or in a part of the mantle (8).
  6. The hydrant according to claim 4 or 5, when dependent on claim 4, characterized
    - in that a supply line (13) is provided for supplying fluid into the ascending pipe (1),
    - in that the supply line (13) extends, with the shape of a nozzle, into the ascending pipe (1),
    - in that the supply line (13), in particular its mantle surface, is provided with a supply opening (14),
    - and in that the supply opening (14) is closed in the first rotation position of the blocking element (3) by means of the blocking element (3), in particular, by means of the continuous area (10) to close the fluid supply.
  7. The hydrant according to one of claims 4 or 5, characterized
    - in that a supply line (13) is provided for supplying fluid into the ascending pipe (1),
    - in that the supply line (13) extends with the shape of a nozzle into the ascending pipe (1),
    - in that the supply line (13), in particular its mantle surface, is provided with a supply opening (14),
    - and in that the through opening (9) of the blocking element (3) and the supply opening (14) in the second rotation position of the blocking element (3) are positioned in such a way to one another that the fluid supply into the ascending pipe (1) is open.
  8. The hydrant according to one of the preceding claims, characterized
    - in that the gear ratio ranges from 1:10 to 1:50, preferably 1:40.
  9. The hydrant according to one of claims 1 to 8, characterized
    - in that the gear (15) comprises a connecting link (18) and at least one sensing element (19) in active contact with the connecting link (18),
    - in that the gear (15) comprises a spindle drive (17) to move the sensing element along the axis of rotation (6),
    - in that the connecting link (18) is running obliquely and/or helically to the axis of rotation (6),
    - in that the sensing element (19) is mounted in such a way that it is pivoted about the axis of rotation (6) upon movement along the axis of rotation (6) and along the connecting link (18),
    - and in that the sensing element (19) is rotationally connected or rotationally coupled with the blocking element (3) to actuate the blocking device (2) .
  10. The hydrant according to claim 9, characterized
    - in that the connecting link (18) is formed as an obliquely or helically extending groove arranged in a sleeve (20),
    - and in that, in particular, more such grooves are provided in the sleeve (20), which, upon movement of the sensing element (19) along the axis of rotation (6), rotate the sensing elements (19) about the axis of rotation (6) .
  11. The hydrant according to claim 9 or 10, characterized in that the shaft (16) has a changeable length and, in particular, is designed telescopically.
  12. The hydrant according to one of the preceding claims, characterized in that the ascending pipe (1) has a changeable length and, in particular, is designed telescopically.
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Publication number Priority date Publication date Assignee Title
US609104A (en) * 1898-08-16 Henry max kunz
DE732663C (en) * 1936-10-06 1943-03-09 Wilhelm Koechling Water post
JP2772467B2 (en) * 1995-02-17 1998-07-02 株式会社竹村製作所 Antifreeze faucet column and valve structure for the antifreeze faucet column
JP4157643B2 (en) * 1999-03-17 2008-10-01 株式会社日邦バルブ Antifreeze faucet column
DE102006015802B4 (en) * 2006-04-03 2012-05-03 Norbert Schütz pipe connection
JP5055395B2 (en) * 2010-03-08 2012-10-24 株式会社竹村製作所 Antifreeze faucet column
US9920868B2 (en) * 2016-06-01 2018-03-20 Mark Shawn Sutton Extendable stand pipe and flex joint modules
CA2986867A1 (en) * 2016-11-28 2018-05-28 9309-0983 Quebec Inc. Fire hydrant valve and method for controlling a water flow in a fire hydrant conduit
EP3619369B1 (en) * 2017-05-01 2021-03-03 AVK Holding A/S A hydrant and use of a hydrant
US10677363B2 (en) * 2018-02-13 2020-06-09 Dale S. Cheney Water hammer prevention valve and method

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AT523451B1 (en) 2021-11-15
EP3862494A1 (en) 2021-08-11
AT523451A1 (en) 2021-08-15

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