JPH0710077Y2 - Closing device for the entrance and exit of the submersible pump in the aquarium - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is to open a door of a rod-shaped submersible pump to be immersed in the tank wall of a water tank, and to provide a lid for closing the entrance from the outside of the water tank. Is equipped with a pump connection tube part connected to the discharge port of the submersible pump on the inner surface and a pipe connection tube part connected to the outflow pipe outside the tank on the outer surface, and this lid can be attached / detached from the outside of the tank wall around the inlet / outlet The present invention relates to a closing device for a submersible pump inlet / outlet of a water tank, which is connected to a discharge port of a submersible pump in the water tank and a water discharge pipe outside the tank by being attached to the submersible pump via the lid.

<Prior Art> The applicant of the present invention proposed such a device for closing the inlet / outlet of the submersible pump in Japanese Patent Application No. 63-114052.

<Problems to be solved by the invention> Since the submersible pump is driven by a built-in motor unit, it is necessary to supply power from a power source outside the tank to the motor unit of the submersible pump in the tank with a cable.

In the above conventional device, a seal connector is attached to the hole opened in the lid, and a cable extending from the motor part of the submersible pump is pierced through this seal connector and taken out of the tank to connect to the power source. Since the through hole of the seal connector is small in order to prevent water from leaking from between the casing and the casing, it takes a great deal of time and labor to pass a long cable of 4 to 5 m through it.

<Means for Solving the Problems> Therefore, the present invention has an inner surface of the lid so that the cable extending from the motor section of the submersible pump can be easily put out of the water tank without using a seal connector. It is characterized in that a groove having an opening end that opens to the outer periphery is provided, and a cable extending from the motor part of the submersible pump in the tank and connected to a power source outside the tank is sealed and passed through the groove.

<Embodiment> In each of the illustrated embodiments, 1 is a lid, 2 is a submersible pump, and the lid 1 is an arbitrary shape such as a circular shape which is opened on a tank wall of a water tank described later and is larger than the inlet / outlet port of the submersible pump. A pump connecting cylinder portion 3 that is connected to the discharge port of the submersible pump is provided on the inner surface of the center portion, and a pipe connecting cylinder portion 5 that is connected to the connecting cylinder portion and that is connected to the outflow pipe 4 outside the water tank T is provided on the outer surface of the center portion. There is. As shown in FIG. 1, when the lid 1 is thickly formed of plastic or metal, for example, aluminum casting, a series of cylinders 6 penetrates the center hole of the lid and is screwed into the nut 6a.
And the flange 6b on the way, tighten around the center hole of the lid, the portion of the tubular body protruding from the inner surface of the lid is the pump connecting tubular portion 3, and the portion protruding from the outer surface is the pipe connecting tubular portion 5, The connection to the discharge port of the pump may be easily performed only by the tubular body 6, or, of course, both the connecting tubular portions 3 and 5 may be integrally formed with the lid.

The inner surface of the lid 1 is provided with a radial groove 7 having an open end opened to the outer periphery, a cable 8 extending from the motor part of the submersible pump is passed through the groove 7, and the open end 7 ′ of the outer end of the water tank. Place it so that it can be pulled out. This groove 7
The inner end on the side opposite to the open end 7'is located inside the inlet / outlet 9 of the submersible pump provided at the bottom of the tank wall of the water tank, in the illustrated embodiment, the peripheral wall t. In addition, the lid is provided with an air vent hole 10 located inside the doorway 9 which is closed by a plug, and a drain port 11 below, if necessary.
Eight mounting holes 12, for example, are formed in the peripheral edge portion that abuts around the circumference at equal intervals in the circumferential direction.

When the cylindrical body 6 is penetrated, the central hole 1'of the lid is formed into a keyhole shape as shown, or a non-circular shape such as a polygonal shape or an oval shape, and a portion of the cylindrical body passing through the central hole 1'is also shaped to correspond thereto. It is preferable to place it in a non-rotating state.

The lid 1 preferably has a cylindrical joint that covers the open end 7'of the groove 7 from above and projects outward from the outer surface of the lid, as shown in FIGS. 7, 8 and 9, 10. Install 13,
From the open end 7'of the groove through this joint the cable 8
Is placed outside the water tank, and a portion of the cave located outside the water tank is covered with a flexible protective tube, and one end of the tube 14 is fitted into a joint 13 so that the tube can be connected.

The joint 13 shown in Figs. 7 and 8 is a cylindrical portion 15 protruding to the outer surface of the lid.
And a mounting piece 16 for hanging from the tubular part and fixing it to the outer surface of the lid, and the upper half of the tubular part extends rearward from the mounting piece, whereby the open end 7'of the groove is raised. Cover piece 17
And is integrally molded of plastic, for example. The length of the cover piece 17 is determined so that the rear end 17 'of the cover piece contacts the outer surface of the tank wall when the mounting piece 16 is fixed to the outer surface of the lid and the lid is attached to the tank wall.

Further, the joint 13 of FIGS. 9 and 10 is a long half-cylindrical plate 18 integrally having an upper half of the tubular portion 15 of the joint of FIGS. 7 and 8 and a cover piece 17 which is an extension thereof, It consists of a short semi-circular plate 19 corresponding to the lower half of the part 15, and the collars 18 ', 19' extending from both sides of each plate 18, 19 are overlapped on both side edges of the open end 7'of the groove of the lid. Fix and cover the open end 7'of the groove with the rear half of the long half-cylindrical plate 18. The rear end of this long half-cylindrical plate is also placed so as to abut the outer surface of the tank wall when the lid is attached to the tank wall.

By the way, FIGS. 11 and 12 show an embodiment in which the submersible pump 2 is concentrically housed in a housing cylinder 20 placed laterally at the bottom of the water tank. The housing cylinder 20 has a larger diameter at the front end than the inlet / outlet port 9 of the submersible pump. It has a collar 21 having almost the same diameter as that of the lid 1, and this collar is applied from the inside around the inlet / outlet 9, and the collar 21 is passed from the inside of the tank, and bolts 22 are passed around the periphery of the inlet / outlet in the circumferential direction. It is fixed to the peripheral wall by a nut 23 screwed into each bolt 22 from the outside of the tank and fastened to the outer surface of the peripheral wall t, and the rear end portion having the opening / closing valve 24 is supported by a base 25 fixed on the bottom wall. The container 20 is placed horizontally on the bottom wall of the aquarium. This bolt 22 is arranged in the mounting hole 12 of the lid 1.
Is the same as.

Then, the submersible pump 2 mounted by, for example, screwing the pump connecting tubular portion 3 of the tubular body 6 into the discharge port is loaded from the motor portion into the housing barrel 20 through the inlet / outlet port 9.

Spacers 26, which are in sliding contact with the inner circumference of the housing cylinder, are attached to the outer circumference of the motor-side end of the submersible pump 2 at circumferential intervals so as to be concentrically held in the housing cylinder. .

Then, the central hole 1'of the lid is inserted into the pipe body 6 from the pipe connecting cylinder portion 5 side.
, Press it against the collar 6b, screw the nut 6a into the male thread of the cylinder in front of the collar and tighten it to integrate the lid and the cylinder, and then close the cable 8 for power supply from the motor of the submersible pump. An elastic seal piece 27 protruding from the inner surface of the lid is arranged inside the groove 7 while passing through the groove 7.
The sealing piece 27 is hollow as shown in FIGS. 4 and 5 and has a split 28 so that the cable 8 can be passed through the hollow by opening the split or shown in FIG. Alternatively, the cable 8 may be pressed against the bottom of the groove 7.

Then, while pushing so that the submersible pump completely enters the housing cylinder, align the mounting hole 12 of the lid with the nut 23 tightening the bolt 22, and fit the mounting hole 12 to the nut 23 to fit the inner surface of the peripheral portion of the lid. From the outside around the doorway 9,
A washer 28 having a diameter larger than that of the bolt 22 protruding from 12 is fitted, and then a nut 29 is screwed in and tightened, and the lid 1 closes the entrance. As a result, the sealing piece 27 protruding from the groove 7 is pressed against the outer surface of the tank wall and compressed, and the cable 8 is sealed and held in the groove 7. The above-mentioned joint 13 may be mounted on the lid 1 in advance, or may be mounted on the lid after closing the inlet / outlet with the lid.

Next, a protective tube 14 is put over the entire length of the cable that goes out from the joint 13, the end of the cable is connected to the joint 13, and the pipe connecting cylindrical portion 5 protruding outward has a flange connecting portion 4'via an elbow. Connect the water discharge pipe 4.

In this way, the water is supplied to the water tank T and the on-off valve 24 attached to the storage cylinder 20
Can be opened to allow the water in the tank to flow into the storage cylinder 20, and the submersible pump can be operated to discharge the water to the water discharge pipe 3. Note that an automatic exhaust valve 30 may be attached to the upper surface of the storage cylinder 20, and the air in the cylinder may be discharged into the water tank by the automatic exhaust valve by the water flowing into the storage cylinder 20 from inside the water tank.

An on-off valve to take out the submersible pump for maintenance inspection
24, close the plug, remove the plug, and remove the air vent hole 10 and drain port 11.
Open and drain the water in the container from the drain port, remove the nut 29 and washer 28, remove the flange connection part 4'of the water pipe 4 and pull the lid 1 to integrally house the submersible pump. 20 Pull out from inside. When the maintenance and inspection are completed, the submersible pump is housed in the housing cylinder in the reverse order of the above operation, and the pump inlet / outlet 9 is closed with the lid.

Fig. 13 shows an example in which the submersible pump is not housed in the container because the capacity of the submersible tank is small, and it is placed directly on the bottom wall of the submersible tank. In this case, the submersible pump is maintained and inspected. Therefore, when the water is taken out of the tank, the entire amount of water in the tank is drained from the drain attached to the tank, so that it is not necessary to provide the lid 1 with an air vent hole or a drain port.

In this embodiment, the end portion having the discharge port of the submersible pump is supported by the pump connecting cylinder portion 3 in the lid 1 that closes the inlet / outlet 9, and the motor-side end portion of the submersible pump is in contact with the bottom wall of the water tank ( (Not shown), and the submersible pump is laid directly on the bottom wall. Therefore, when maintaining and inspecting the submersible pump, open the drain (not shown) provided on the bottom wall of the water tank, drain all the water in the tank, and then remove the flange connection part 4'in the middle of the water discharge pipe 4. At the same time as removing, the nut 29 is loosened and pulled out from the bolt 22 together with the washer 28, the lid 1 is removed from the tank wall leaving the bolt 22 and the nut 23, and the submersible pump is pulled out from the inlet / outlet 9. When the inspection is complete, reverse the repair procedure.

As described above, the pump connecting tubular portion 3 provided on the lid and the pipe connecting tubular portion 5 may be formed integrally with the lid.

Further, the lid 1 may be press-formed from a metal plate such as a stainless steel plate as shown in FIG. In this case, the groove 7 in the radial direction is also pressed at the same time, and a center hole 1'for penetrating and fixing the series of cylinders 6 is formed at the center.

In the above-described two embodiments, the inlet / outlet port 9 of the submersible pump is provided in the lower part of the peripheral wall, and the submersible pump is placed directly on the bottom wall or is housed in the storage cylinder, but the present invention is not limited to this. The submersible pump can be installed vertically in the tank with the outlet opening on the upper wall of the tank.

<Effect of the Invention> According to the present invention, a cable for power supply extending from the motor part of the submersible pump is attached to the groove of the submersible pump by attaching a cover from the outside around the entrance of the submersible pump on the tank wall of the water tank and closing the entrance. It can be sealed and held inside, and pulled out of the aquarium to connect to a power source.

Therefore, it is possible to free the labor and labor required to pass a long cable in the conventional seal connector attached to the lid.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of a lid used in the present invention, FIG. 2 is a perspective view of another example of the lid, and FIG. 3 is a cross-sectional view of a main part of the lid shown in FIG. 4 and 5 are sectional views showing an example of a state in which a cable is passed through the groove of the lid shown in FIG. 1 and a seal piece is attached, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a plan view of another example. The same plan view as FIG. 5, FIG. 7 is a cross-sectional view of an example in which a joint is attached to the lid of FIG. 1, FIG. 8 is an exploded perspective view of FIG. 7, and FIG. 9 is a cross-sectional view of another example. FIG. 10 is an exploded perspective view of FIG. 9, FIG. 11 is a side view in which a part of an embodiment in which the inlet and outlet of the submersible pump are closed by a lid is shown in section, and FIG.
FIG. 11 is an enlarged view of the main part of FIG. 11, and FIG. 13 is an enlarged cross-sectional view of the main part of another embodiment in which the inlet and outlet of the submersible pump are closed by a lid. In the figure, 1 is a lid, 2 is a submersible pump, 3 is a pump connecting cylinder,
4 is a water outlet pipe, 5 is a pipe connecting tubular portion, 7 is a groove of a lid, 8 is a cable, 9 is an inlet / outlet port of a submersible pump, 13 is a joint, 14
Is a protection tube, T is a water tank, and t is a tank wall.

Claims (1)

[Scope of utility model registration request] 1. A pump for connecting a discharge port of the submersible pump to an inner surface of a lid for closing the entrance from the outside of the water tank by opening a port of the rod-shaped submersible pump in the tank wall of the water tank. A pipe connecting cylinder is provided on the outer surface of the connecting cylinder, which is connected to the water discharge pipe outside the tank, and the lid is detachably attached from the outside of the tank wall around the inlet / outlet, and the lid of the submersible pump in the water tank is inserted through the lid. In the closing device for the submersible pump inlet / outlet of the water tank in which the discharge port and the water discharge pipe outside the tank are connected, a groove having an opening end opening to the outer circumference is provided on the inner surface of the lid, and the groove is provided from outside the water tank. A device for closing a submersible pump inlet / outlet of a water tank, which extends through a motor part of a submersible pump inside and seals a cable for connecting to a power source outside the tank.