CN102667168A - Winding device for the connection cable of a garden pump - Google Patents

Abstract

For a garden pump, in particular a submersible pump, advantageous solutions for storing an electrical connection cable in the form of a cable reel that is mounted on the pump housing are described.

Description

Winding device for connection cables of garden pumps

technical field

The invention relates to a gardening pump, in particular to a submersible pump.

Background technique

Submersible pumps typically have very long electrical connection cables. A submersible pump is known from DE 20 2005 018 336 U1 in which a coiled cable extending around a support handle of the pump housing is provided.

Contents of the invention

The object of the invention is to further improve the operation of a garden pump of the type stated in the preambles of the independent claims.

The invention is described in the independent claims. The dependent claims reveal advantageous configurations and developments of the invention.

According to a first advantageous embodiment of the invention it is provided that the winding device, on which the electrical connection cable can be wound, can be switched between a closed position and an open position. The closed position is a position of the winding device in which the cable can be manually wound onto or unwound from the winding device in a conventional manner, for which purpose each of the coil drums is successively Coils are placed around or removed from the winding device. In contrast to this, a position of the winding device is referred to as the open position, in which the cable reel previously wound on it when the winding device was in the closed position can remove all coils in its entirety. This simplifies the unclamping process, which is of great importance in particular for submersible pumps with typically long cable lengths. To wind up the cable, the winder is reset to the closed position.

The winding device preferably comprises at least one hook, wherein switching between a closed position and an open position preferably takes place. The hook opens in a direction pointing radially away from the cable drum. In order to obtain a radial direction specification, it is simplified to start from the center point of the inner surface surrounded by the coil of the cable drum, which can be attributed to the normal of the surface. The normal to the face passing through the center point is called the winding axis and the radial direction is called the direction perpendicular to the winding axis pointing away from it.

The hook advantageously has a free bow-shaped handle which is movable relative to the pump housing in order to switch the winding device between a closed position and an open position. Preferably, the bow-shaped shank situated opposite the free bow-shaped shank is formed by the housing surface of the pump housing. The free shank and the shank situated opposite it are advantageously connected by an intermediate shank, which is formed in particular by a gradient or projection of the pump housing. The free shank can advantageously be planar, for example in the form of a plate with or without planar cutouts.

The free bow-shaped handle of the hook can be swiveled, for example, about a pivot axis, so that the winding device can be switched between a closed position and an open position. In a preferred embodiment, the free bow-shaped handle is displaceable radially relative to the winding axis, and here preferably in the direction of the winding axis relative to the closed position into the open position. The movable free bow handle can preferably be held in its position corresponding to the closed position of the wrapping device in a form-fit connection, for example by means of a locking mechanism and/or a detachable securing element. The movable free bow handle can also be held in the closed position under the action of a restoring force, in particular under the action of a spring, and can be switched into the open position against the restoring force.

When the winding device is in the open position, the cable drum can be passed over the movable arcuate handle in a direction substantially parallel to the winding axis, moved outward from the hook and removed from the device being wound.

Advantageously, the cable reel extends in both winding directions, except for the switchable hook which has no holding structure.

In a further embodiment, the hook can be formed on the bottom side of the pump between two downwardly opening recesses, wherein such recesses can be provided in particular in the bottom spacer. Here, the hook can be designed in a particularly simple and inexpensive manner.

The bottom spacer can be used in particular to keep the suction opening of the pump, which is formed on the bottom of the pump housing, at a defined, advantageous distance from the installation surface, since submersible pumps are often placed in areas where sludge that should not be sucked in accumulates. dirt on the mounting surface.

In addition to the hook, the winding device advantageously also comprises at least one deflection device for the cable reel, wherein such a deflection device is arranged away from the hook with respect to the winding axis and comprises a structure which holds the cable reel in the on the shell. The steering device can in turn be formed as a hook or a structure that performs the same function.

Preferably, the outlet line of the pump can be assigned the said diverting device. In a preferred embodiment, the deflection device is formed by a nipple of the outlet connection protruding from the pump housing, wherein the nipple is surrounded by the cable reel when the cable reel is wound up, that is to say located at the end of the cable reel. within the inner surface. Advantageously, the cable reel remains on the pump housing whether or not an additional pipe section is connected to the pump outlet end. In the pipe section which is part of the outlet line and which is connected to the outlet pipe connection, the cable reel can be slipped over this pipe section after being removed from the hook and thus completely released from the pump housing .

Description of drawings

The present invention will be further described below according to preferred embodiments with reference to the accompanying drawings.

Shown in the accompanying drawings:

Figure 1 shows a submersible pump with tangled cables;

Figure 2 shows the pump according to Figure 1 after the cable drum has been removed;

Figure 3 shows another embodiment.

Detailed ways

Figure 1 shows a submersible pump in which the outlet pipe AL is fixed alternatively along the arrow BB on the outlet fitting AS projecting upwards from the pump housing PG so as to assume the working position, or can alternatively be held as indicated by the arrow BA In the storage position on the side of the housing. Submersible pump arrangements with such an outlet pipe are known to be used in particular as rain barrel pumps with a curved outlet pipe as shown. The way in which the outlet line is attached to the outlet connection AS or how it is arranged in the housing-side storage position is not part of the invention and will not be explained further below.

On the pump housing, as part of the cable winding device, there is provided a bracket VK protruding from one side of the pump housing. The bracket VK is considered fixed relative to the pump housing PG. The bracket VK together with the step surface BS pointing away transversely to the pump housing forms the central bow-shaped handle of the downwardly opening hook. The partial plane BI of the pump housing or of the bracket forms the inner bow-shaped handle of the inner bow-shaped handle or the inner bow-shaped surface of the hook. The hook also comprises a free bow SB, which protrudes downwards from the step face BS and forms a cable reception between itself and the inner bow face BI. The hook opens downward and substantially forms an inverted U-shape in side sectional view.

A connecting cable protruding from the pump housing PG at the cable socket KA is wound onto the pump housing as a cable reel KW with a plurality of coils shown symbolically in FIG. 1 . In each coil, the cable is deflected from below at the hook and guided upwards through another deflection and runs in the middle section between the cable receptacle on the hook and the upper deflection. In the preferred embodiment shown in the figures, the upper deflector is formed by an outlet connection AS protruding upwards on the pump housing. However, in particular the upper deflector can also be realized in different ways. An imaginary winding axis WA is collectively shown in FIG. 1 . The upper diverter is arranged away from the hook with respect to the winding axis WA. Here too, more than one other deflection device can be provided in other layouts.

The free bow-shaped handle SB of the hook facing away from the pump housing PG is movably supported in the bracket VK and can be moved, for example, by means of the handle HS (which is movable in a slot of the bracket VK), as indicated in the figure at the free bow-shaped handle SB Move vertically in the direction of the double arrow. In FIG. 1 the free bow handle SB is shown in the closed position, wherein the coils of the cable reel are held in downwardly opening hooks on the housing. The bow handle is designed flat and has a flat notch.

If starting from the rolled up and held cable reel KW shown in FIG. 1, the free bow handle SB is moved vertically upwards into the bracket VK by means of the handle HS, firstly the The hook receiving space cut off by the free bow handle SB is open for the cable drum and the cable drum can be shown in the middle position in FIG. The passage is deflected away laterally, as indicated by the arcuate direction arrow E1. The cable drum can then also be easily lifted over the pipe connection AS, as indicated by the second arcuate direction arrow E2. Subsequently, the cable reel is free and the cable can be removed from the free-standing cable reel without a winding process directed to the individual coils.

In Fig. 2, the imaginary inner surface of the cable drum surrounded by the plurality of coils of the cable drum is labeled IF. The cable can also be wound in a cross-coil between the hook and the upper diverter in a figure-of-eight cable drum, thereby forming two such inner surfaces, one of which wraps around the hook and the other around as the upper Outlet fitting for steering gear. Here, each inner surface is assigned its own winding axis. The principle of unwinding the cable drum via the conversion hook has not changed.

Before the cable is rewound, the free bow-shaped handle SB movably supported in the bracket VK slides down again by means of the handle and re-forms the hook closed on three sides, whereby it can be rolled manually round by round to connect the cables.

Starting from FIG. 2, the movable free bow handle SB remains in the position shown in FIG. The free bow handle pushed into the bracket VK overcomes the return force applied downwards, especially the spring force, so that the free bow handle reaches the raised position as shown in Figure 2, and only when the user manually stops the handle In the case of HS, the position of the bow handle can be maintained. When the user's hand is removed, the free bow handle SB and the handle HS move back to the closed position shown in FIG. 2 under the action of the restoring force. Automatic return to the closed position can also be used in other embodiments such as a swingable convertible hook.

In the embodiment shown in FIGS. 1 and 2, an accessory with a notch is additionally mounted on the underside of the pump housing PG, by means of which the suction opening on the underside of the pump can be fitted with the pump if necessary. maintain a certain vertical distance. The significance of this is that if there is sludge dirt on the surface of the pumped water, this dirt layer should not be sucked in by the submersible pump.

In the exemplary embodiment shown in FIG. 3 , a straight pipe section R1 is connected to the outlet connection of the upwardly opening pump housing PG and is preferably locked via the inlet-side end EE to the outlet connection of the pump housing. The end pipe section RE has a curved pipe RO and a handle HG mounted on it made of non-metallic material, a shut-off valve SV and a hose connection SA are installed on the outlet side of the end pipe section. At its inlet-side end ER, the end pipe section is connected, in particular screwed, to the outlet-side end EA of the straight pipe section R1 . The end pipe section RE and the straight pipe section R1 can also be designed as one piece. The further straight pipe sections R2 , R3 are held in storage positions on the pump housing in the pipe receptacle AH. A handle GG is arranged on the upper part of the pump housing to which, for example, a cable can be fastened to lower the submersible pump when the typical end pipe section as a rain barrel pump is not used as part of the outlet line.

In the embodiment shown in FIG. 3 , the hook on the lower part of the pump is used for cable winding, wherein a recess KU is provided at the bottom of the lower mounting surface UE of the pump housing. Only one of the two recesses can be seen in FIG. 3 . The other associated recess is arranged on the opposite covered side of the pump housing, below the mounting surface UE. The recess can also be a downwardly opening channel extending through the pump bottom. The connection cable AK is placed in the lower recess KU in a plurality of coils forming a cable reel on the pump housing. The upper deflection of the cable drum can be formed in the example shown by a deflection hook KO connected to the end pipe section of the outlet line, whereby the end pipe section RE is always connected directly or indirectly to the pump The outlet port is connected.

Another variant, not shown in FIG. 3 , is that the upper deflection device can also be arranged independently of the pipe section of the outlet line, but itself be arranged on the pump housing.

The invention is not restricted to the described embodiments but can be varied in various ways within the scope of the abilities of a person skilled in the art.

Claims (5)

1. A horticultural pump with an electric drive motor and a connecting cable and a winding device connected to the pump housing for winding up the cable and for holding the cable as a cable drum in the On the pump housing, it is characterized in that the winding device has at least one open hook pointing away from the cable drum in the region where the cable drum is deflected, wherein - the hook can be switched from a closed position holding the cable drum to an open position, in which the coil of the cable drum can be pulled from the coil transversely to the winding plane defined by the coil above hooks, and/or - The hook is formed by two recesses opening towards the bottom surface of the pump housing. 2. The garden pump of claim 1, wherein the hook has a movable free arcuate handle. 3. The garden pump according to claim 2, characterized in that the free bow-shaped handle is designed as a slide valve. 4. The garden pump according to any one of claims 1 to 3, characterized in that the outlet pipe is assigned a deflection device of the cable drum arranged at a distance from the hook on the winding path . 5. The garden pump of claim 4, wherein the diversion of the cable drum away from the hitch is formed by an outlet nipple protruding from the pump housing of the garden pump .

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