DE29512629U1 - Underfloor hydrant - Google Patents

Description

The invention relates to an underground hydrant with a standpipe which has a valve at its lower end and accommodates the internal fitting, an attachment arranged at its upper end for a spindle feedthrough and a water connection offset from the pipe axis with an attached coupling, wherein the attachment and the coupling are connected via flanges to a double flange on the standpipe.

In underground hydrants, the spindle or its outwardly protruding operating end - usually a square for extending an operating key - and the water connection are parallel to each other. For this purpose, the standpipe is bulged at its upper end and has a double flange that projects beyond the circular cross-section of the standpipe on one side. While axial

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If the attachment with the spindle feedthrough is arranged at the same time as the standpipe, the water connection with the coupling is eccentric. The coupling for connecting a hose is usually designed as an internal claw. In order to ensure the largest possible flow cross-section, the upwardly protruding claws are pulled outwards so that they protrude over the double flange on the standpipe. The claws are therefore at risk during storage, relocation and transport and can break off if too great a force is applied. Furthermore, lateral impact forces on the attachment or its flange can lead to undesirable transverse forces on the spindle feedthrough and the spindle itself. During storage and transport, where the hydrants are generally stacked lying down, the hydrants must be supported at the vulnerable points or placed in appropriate racks.

The invention is based on the object of eliminating the aforementioned disadvantages effectively and in a simple manner.

This object is achieved according to the invention in that a hoop-shaped transport protection made of a flexible material is provided which extends over at least the circumference of the double flange on the standpipe and the flanges on the attachment and on the coupling.

When stacking parallel to the axis, as well as when lining up, the hoop-shaped transport protection forms a type of protective sleeve, which elastically absorbs impact forces and also prevents paint damage to the protruding flanges caused by impact or friction forces. It also acts as a stacking aid. In the case of underground hydrants, a protective cap made of elastic material is usually attached to the lower open end or to the valve housing located there.

In conjunction with this, the transport protection provided according to the invention at the upper end of the standpipe forms an extremely effective protection and an effective stacking aid.

A preferred embodiment of the invention is characterized in that the transport protection has an outer contour within which all contours of the coupling and/or the attachment that project laterally beyond the flanges are located.

The above-mentioned design ensures that any lateral forces act exclusively on the transport protection and in particular not on the claws that protrude over the flanges. At the same time, the irregular contour at the upper end of the underground hydrant can be covered by a regular contour by appropriately shaping the transport protection, which makes stacking and arranging them easier and prevents neighboring hydrants from getting caught on each other.

In a further embodiment, the hoop-shaped transport protection has locking lugs that overlap the double flange inwards.

Although the hoop-shaped transport protection could also be pulled up under such a pre-tension that not only a radial but also an axial fixation is achieved, the arrangement of the locking lugs has the advantage that the transport protection does not have to be tolerated too tightly and can therefore be attached and removed more easily.

In a further preferred embodiment, it is provided that

the hoop-shaped transport protection is made of a band that encircles the double flange and the flanges on the attachment and on the coupling, which is provided with projecting profiles at the points where the coupling or the attachment has contours that protrude beyond the contour of the flanges.

The profiles that protrude at the most vulnerable points on the hydrant can be designed as molded-on cams. But they also advantageously consist of a band-shaped, molded part that runs at a distance from the edge that spans the flanges and is connected to it via stiffening struts.

Finally, it can be provided that the transport protection has an inwardly projecting positioning stop, which interacts with a rising surface above the double flange, in order to force correct assembly on the one hand, and on the other hand to prevent twisting of the hoop-shaped transport protection and thus ensure that the projecting profiles are also correctly positioned.

The transport protection designed according to the invention consists preferably of plastic and is manufactured as an injection-molded part.

The invention is described below using an embodiment shown in the drawing. In the drawing:

Figure 1: a side view of an underground hydrant;

Figure 2 : a view rotated by 90° compared to Figure 1

View and

Figure 3: a top view of an embodiment of the transport protection.

The underground hydrant has a standpipe 1, which is designed as a circular cylinder over a large part of its length and has a bulged valve housing 2 with a valve seat 3 for a loose valve ball 4 at the lower end. The valve housing 2 has a flange 5 for connecting to the mains line and a support 6 inserted from below for the valve ball 4. For transport and storage, the standpipe 1 is provided at the lower end with a protective flap 7 that overlaps the flange 5.

The standpipe 1 accommodates the inner fitting for operating the valve ball 4. The inner fitting 8 essentially consists of the spindle 9 and a pressure pipe 10 extending it.

The standpipe 1 has an axially aligned opening 11 at its upper end for inserting the inner fitting 8. The opening 11 is closed by an attachment 12 with a spindle bushing 13. At its outer end, the spindle 9 has a square 14 for inserting a key.

The standpipe 1 is bulged out to one side at its upper end - starting at 15 - and has an axis-parallel water connection 16, which is provided with a detachable cover 18 and a coupling 17 in the form of an internal claw for connecting a hose. The

Coupling 17 and the attachment 12 each have a substantially oval flange 19, 20, while the standpipe is provided at its upper end with a double flange 21 which encloses the opening 11 and the water connection 16 and has a substantially rectangular outline, the sides on the right and left in Figure 1 being rounded in the plan view (not shown).

The double flange 21 on the standpipe and the flanges 19, 20 on the attachment 12 and on the coupling 17 are surrounded by a hoop-shaped transport protection 22, the height of which corresponds to at least the sum of the flange widths.

The transport protection 22 is shown in a top view in Figure 3. It consists of a hoop-shaped band 23, the outline of which corresponds to that of the double flange 21 on the standpipe 1. At those points where this outline is exceeded by the parts 0 connected to the standpipe 1 - in the embodiment shown this is the claw 24 of the coupling 18 (Fig. I) - the band 23 has a correspondingly projecting profile 25. This is formed by a band section 26 which is essentially parallel to the band 23 and which is stiffened by a web 27. The band 23 also has locking lugs 28,

29 which protrude inwards and of which the locking lugs 28 overlap the double flange 21 on the upper side between the two flanges 19, 20, while the locking lugs 29 overlap the double flange 21 on the lower side.

Finally, the tape has a positioning stop

30, which consists of a web 32 and a support 32. The positioning stop also overlaps the top of the double flange 21 between the two flanges 19, 20 and at the same time acts as an additional locking lug.

Claims (5)

PATENT ATTORNEYS. _# · * %.· ·.«* * .." ...* DiPLiNG. HEINER LICHTI DlPL-PHYS. DR. RER. NAT. JOST LEMPERT D-76207 KARLSRUHE (DURLACH) PO BOX 410760 DIPL-ING. HARTMUT LASCH TELEPHONE: (0721)9432815 FAX: (0721) 9432840 Bopp & Reuther
Fittings GmbH
Carl-Reuther-Strasse 1 13190.8/95 Lj/ja 05 Mannheim 04. August 199 5 Protection claims 1. Underground hydrant with a standpipe which has a valve at its lower end and accommodates the internal fittings, an attachment arranged at its upper end for a spindle feedthrough and a water connection offset from the pipe axis with an attached coupling, the attachment and the coupling being connected via flanges to a double flange on the standpipe, characterized in that a hoop-shaped transport protection (22) made of a flexible material is provided which overlaps the double flange (21) on the standpipe (1) and the flanges (19, 20) on the attachment (12) and on the coupling (17) at least on the circumference. 2. Underground hydrant according to claim 1, characterized in that the transport protection (22) has an outer contour within which all the flanges (19, 20, 21) laterally projecting contours of the coupling (17) and/or the attachment (12). 3. Underground hydrant according to claim 1 or 2, characterized characterized in that the hoop-shaped transport protection (22) has locking lugs (28, 29) which overlap the double flange (21) inwards for axial securing. 4. Underground hydrant according to one of claims 1 to 3, characterized in that the hoop-shaped transport protection (22) is formed from a band (23) enclosing the double flange (21) and the flanges (19, 20) on the attachment (12) and on the coupling (17), which at the points where the coupling (17) or the attachment (12) follows the contour of the flanges (19, 20, 21) has projecting contours, is provided with cantilevered profiles (25). 5. Underground hydrant according to one of claims 1 to 4, characterized in that the transport protection (22) has an inwardly projecting positioning stop (30) which cooperates with a rising surface above the double flange (21).