JPS5919837Y2 - Automatic attachment/detachment device for submersible motor pumps - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic attachment/detachment device for a submersible pump that is installed in a sewage tank, filth tank, etc. so as to be movable up and down along a guide rod.

In such submersible pumps, the discharge side piping is installed in the tank in advance, and when the pump needs to be pulled up due to periodic inspection or an accident, the liquid in the tank can be drained or the discharge piping can be removed. The pump can be raised without having to do so.

Furthermore, after the pump has been inspected or repaired, it can be reinstalled in its original position without draining the liquid in the tank or removing the discharge piping.

Prior to explaining the present invention, in order to clarify the features of the present invention, general matters of this type of automatic attachment/detachment device for a submersible pump will first be explained with reference to FIGS. 1 to 3.

In FIG. 1, a submersible pump, designated as a whole by reference numeral 1, consists of a motor 2 located at the top and a pump 3 located at the bottom of the motor 2, both of which are integrated.

A sliding guide 5', the details of which will be described later, is integrally attached near the pump discharge port 4.

A claw 6 that engages with a projection 10 on the side of the discharge curved pipe 9a, which will be described later, is provided at the lower part of the sliding guide 5'.

A lifting chain 7 is provided at the upper part of the submersible pump 1, and the submersible pump 1 is suspended by this chain 7.

A pump installation stand 8 is fixedly installed on the floor surface A2 of the liquid tank A, and a curved pipe 9a of a discharge pipe 9 extending upward from the floor surface A2 side to the lid A1 side is fixed to this pump installation stand 8. ing.

A protrusion 10 is provided near the pump outlet 4 of the curved pipe 9a, with which a claw 6 provided on the sliding guide 5' of the submersible pump 1 engages.

A guide rod 11 extending upward is fixed to the curved pipe 9a, and the tip of the guide rod 11 is locked by a locking member 12 attached to the peripheral wall of the manhole A3 of the liquid tank A.

Details of the sliding guide 5 are shown in FIGS. 2 and 3, and the sliding guide 5' is the upper guide 5'.
A and a lower guide 5'B provided below the upper guide 5'A at an appropriate distance from the upper guide 5'A. A recess 13 that fits into the provided guide rod 11°11
Two each of 'A' and '13'B are provided.

Since a pipe is used as the guide rod 11.11 in the illustrated example, the shape of the recesses 13'A and 13'B is a semicircular recess slightly larger than the outer diameter of the guide rod 11.11. ing.

This sliding guide 5' is detachably attached to the vicinity of the discharge port 4 of the submersible pump 1 with bolts 14.

In Fig. 1, if the pump needs to be lifted up due to periodic inspection or an accident, the submersible pump 1 is lifted up using the chain 7;
is lifted up while being guided by the sliding guide 5' and the guide rod 11.

In addition, to install the submersible pump 1 that has been inspected and repaired,
When the submersible pump 1 is guided by the sliding guide 5' and the guide rod 11 and the chain 7 is loosened, the claw 6 provided on the sliding guide 5' engages with the protrusion 10 provided on the curved pipe 9a, The flange of the pump discharge port 4 is automatically pressed against the flange of the curved pipe 9a, and the submersible pump 1 is connected to the discharge pipe 9, and the submersible pump 1 is installed on the pump installation stand 8.

By the way, when lifting or lowering the submersible pump 1 with the chain 7 while guiding the submersible pump 1 with the sliding guide 5' and the guide rod 11, the submersible pump 1 must be hung vertically, or the chain 7 must be installed in the correct position. If the submersible pump 1 is offset by a distance δ from the center of gravity of the submersible pump 1 and the pump discharge port 4 side is tilted slightly downward, lifting and lowering of the submersible pump 1 and attachment and detachment of the submersible pump 1 can be done smoothly. sell.

However, it is difficult to hang the submersible pump 1 vertically due to its shape, and the submersible pump 1 is usually hung with the pump discharge port 4 side slightly tilted downward.

When lifting or lowering the submersible pump 1 by suspending the submersible pump 1 with the pump discharge port 4 side slightly tilted downward, the circumferential surface of the four parts 13' of the sliding guide 5' may hit the guide rod 11, resulting in what is called a "spinning". There is a problem in that this causes damage to the sliding guide 5' and the guide rod 11.

That is, as shown in FIGS. 2 and 3, the recesses 13' formed in the upper guide 5'A and the lower guide 5'B
A, 13'B are approximately equal to the outer diameter of the guide rod 11.11, and there is no margin for the outer peripheral surface of the guide rod 11.11, and if the submersible pump 1 is slightly tilted, the guides 5'A, 5.
'B recess 13'A, 13'B peripheral surface is guide rod 11°1
It hits the outer peripheral surface of 1.

Of course, the recess 13'A. The problem of galling can be solved by making 13'B considerably larger than the outer diameter of the guide rod 11.11, but if this is done, the range of movement of the submersible pump 1 with respect to the guide rod 11.11 becomes too large, and the submersible pump 1
installation.

Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to eliminate the so-called "galling" between the guide rod and the sliding guide when lifting and suspending a submersible pump, which is a problem that often occurs when installing a submersible pump. An object of the present invention is to provide an automatic attachment/detachment device for a submersible pump that does not cause damage.

Therefore, according to the present invention, the sliding guide is provided with four parts that fit into the guide rod, and the recess formed in the sliding guide is fitted into the guide rod.
In a submersible pump that is tilted downward on the discharge port side and is guided by a guide rod and a sliding guide and moved up and down along the guide rod, the sliding guide is arranged at an appropriate distance from the upper guide and the upper guide. A lower guide is provided below the upper guide, and a recess into which the guide rod fits is formed in the upper guide and the lower guide, and the pump side of the recess formed in the upper guide is for escape. There is provided an automatic attachment/detachment device for a submersible pump in which the lower guide is slightly recessed and the corners of the circumferential surface of the recessed portion of the lower guide are chamfered.

Since the present invention has the above-mentioned configuration, the guide rod is fitted into the recesses formed in the upper guide and the lower guide, and the discharge port side is tilted downward and guided by the guide rod and the sliding guide. When moving the submersible pump up and down along the guide rod, the submersible pump tilts so that the discharge port side faces downward, centering on the lower guide, where there is no space between the outer circumferential surface of the guide rod and the circumferential surface of the recess. The pump side of the recess formed in the guide is slightly recessed for relief, and the relief creates a margin between the outer peripheral surface of the guide rod and the pump side peripheral surface of the recess. The slightly enlarged recess prevents galling between the guide rod and the recessed portion of the guide.

In addition, since the submersible pump tilts around the lower guide, there is no space between the outer circumferential surface of the guide rod and the circumferential surface of the recessed part of the guide.
There is no deviation in relative position between the claw formed on the sliding guide on the submersible pump side, the protrusion formed on the discharge curved pipe on the pump installation stand side, and the flange on the pump discharge port side and the flange on the discharge curved pipe side. A submersible pump can be properly installed on a pump mount.

In addition, the submersible pump tilts around the lower flange, but since the corners around the recess formed in the lower flange are chamfered, the submersible pump can tilt smoothly around the lower guide. Chamfering prevents galling between the guide rod and the circumferential surface of the recess.

Embodiments of the present invention will be described below with reference to the drawings.

4 and 5 show a first embodiment of the present invention, in which an upper guide 5A is provided near the discharge port 4 of the submersible pump 1 and an appropriate distance apart from the upper guide 5A below the upper guide 5A. A sliding guide, indicated by 5 as a whole, has a lower guide 5B which is detachably attached to the upper guide 5A and a lower guide 5B by bolts.
4 parts 13A that fit into two guide rods 11.11 erected from the discharge curved pipe 9a fixed to the pump installation stand 8;
The recesses 13A are formed in the upper guide 5A and the lower guide 5B, although the formation of the recesses 13B is similar to the conventional example shown in FIGS. 2 and 3.

The following improvements have been made to 13B.

That is, the pump side 15 of the recess 13A formed in the upper guide 5A is slightly recessed for relief, and the corners around the recess 13B formed in the lower guide 5B are chamfered 16.

In addition, in the illustrated example, the four parts 13 formed on the upper guide 5A
Although the corners around A are also chamfered, the corners of the recess 13A of the upper guide 5A do not necessarily need to be chamfered.

As is clear from comparing FIGS. 4 and 5 with FIGS. 2 and 3 of the conventional example, the pump side of the recess 13A formed in the upper guide 5A is far from the pump side of the recess 13A. Recesses 13B formed in the side and lower guides 5B
The notch is wider and has a slightly larger recess 15.

Therefore, in FIGS. 4 and 5, in which the submersible pump 1 is vertically suspended so that the upper guide 5A and the lower guide 5B are horizontal, the circumferential surfaces of the recesses 13A and 13B and the outer circumferential surface of the guide rod 11. The gap between the circumferential surface of the pump side 15 of the recess 13A of the upper guide 5A, which is slightly recessed for relief, and the outer circumferential surface of the guide rod 11 is smaller than S in other parts. Also, S' becomes large.

This relatively large gap S' serves as an escape when suspending the submersible pump 1 by tilting the discharge port 4 side downward.
This prevents the guides 5A, 5B from colliding with the recesses 13A, 13B.

In addition, the submersible pump 1 is tilted around the lower guide 5B where the gap between the outer circumferential surface of the guide rod 11 and the circumferential surface of the concave portion is small throughout, and therefore, the claws provided on the sliding guide 5 on the submersible pump 1 side The submersible pump is properly installed on the pump installation base 8 without causing any relative positional deviation between the protrusion 10 provided on the discharge curved pipe 9a on the pump installation base 8 side, the flange on the pump discharge port 4 side, and the flange on the discharge curved pipe 9a side. be able to.

Furthermore, since the corners around the four parts 13B formed on the lower guide 5B are chamfered 16, the submersible pump 1 tilts smoothly around the lower guide 5B, and the chamfers 16 allow the guide rod 11 and the circumferential surface of the recess 13B to Prevents galling.

FIG. 6 shows a second embodiment of the present invention, in which the pump side 15 of the recess 13A formed in the upper guide 5A is also shown.
In order to escape, the guide rod 11 is recessed slightly larger than the other parts, and the gap with the outer circumferential surface of the guide rod 11 is a gap S' that is larger than the gap S of the other parts.

This prevents galling between the guide rod 11 and the recesses 13A, 13B of the guides 5A, 5B, as in the first embodiment.

In addition, in the embodiment of the present invention, a hollow rod is used as the guide rod 11, as shown in FIG. 18, and then connect the water supply pipe 18.
It is preferable to supply water to the hollow guide rod 11A from the small hole 17 and to inject water from the small hole 17.

By doing this, the dirt that has adhered and solidified on the hollow guide rod 11A is removed by jetting water from the small hole 17, thereby preventing the movement of the sliding guide 5 from being blocked by the dirt that has adhered and solidified on the hollow guide rod 11A, and ensuring a smooth movement. The submersible pump 1 can be raised and lowered.

As described above, according to the present invention, the pump side of the recess formed in the upper guide is slightly recessed, and the corners of the circumferential surface of the recess of the lower guide are chamfered, so that the pump discharge port side is slightly downward. This makes it easy to attach and detach the submersible pump, and does not cause jamming, so this is a great result as an attachment and detachment device for this type of submersible pump.

[Brief explanation of drawings]

FIG. 1 is a side view showing a mode in which the submersible pump is lowered along a guide rod and installed on a pump mount. Figures 2 and 3 show a conventional example of a sliding guide attached to a submersible pump, with Figure 2 being a side view and Figure 3 being a side view.
The figure is a plan view thereof. 4 to 6 show embodiments of the present invention, FIG. 4 is a side view of the sliding guide of the first embodiment, and FIG.
The figure is a plan view of the sliding guide of the first embodiment.
The figure is a plan view of the sliding guide of the second embodiment. FIG. 7 is a side view of a submersible pump equipped with a hollow guide rod that can be suitably employed in implementing the present invention. 1... Submersible pump, 5... Sliding guide, 5A... Upper guide, 5B...
...Lower guide, 6...Claw, 7...
Chain, 8...Pump installation stand, 9...Discharge piping, 10...Protrusion, 11...Guide rod, 13A, 13B...・Concavity, 15...
・Large recess, 16... chamfer.

Claims (1)

[Scope of utility model registration request] It is equipped with a sliding guide formed with four parts that fit into the guide rod, and the recess formed in the sliding guide is fitted into the guide rod, and the discharge port side is tilted downward and guided by the guide rod and the sliding guide. In a submersible pump that moves up and down along a guide rod,
The sliding guide consists of an upper guide and a lower guide provided below the upper guide at an appropriate distance from the upper guide, and the upper guide and the lower guide are formed with a recess into which the guide rod is fitted. The automatic attachment/detachment device for a submersible pump is characterized in that the pump side of the recess formed in the upper guide is slightly recessed for relief, and the corners around the recess of the lower guide are chamfered.