JP2775634B2 - Submersible pump installation device in water tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is intended to easily take out a pump-shaped underwater pump immersed in a water tank out of the water tank for maintenance, inspection, maintenance and inspection. The present invention relates to an apparatus for installing a submersible pump in an aquarium.

<Conventional technology> A connecting cylinder connected to the discharge port of a submersible pump on the inner surface of a lid that opens and closes the entrance and exit of the rod-shaped submersible pump immersed in the water tank on the tank wall of the water tank In addition to providing a part, a connecting cylinder part is provided on the outer surface of the lid to be connected to a water discharge pipe outside the water tank. In order to connect the discharge port of the submersible pump and the water outlet pipe outside the water tank, bolts are fixed around the inlet and outlet of the submersible pump established at the lower part of the tank wall of the water tank, projecting from the tank wall in a dotted manner. Attach and close the lid that closes the entrance of the submersible pump with the nut against the bolt. And when maintaining and inspecting the submersible pump in the water tank, remove the nut from the bolt,
The applicant of the present invention has disclosed that a submersible pump having a discharge port connected to a connecting cylinder portion is taken out of a water tank integrally with a lid.
Nos. 90 and 62-173591.

JP-A-62-173590 discloses that the flange at one end of a casing cylinder that houses a submersible pump is fixed to the inner peripheral surface of the entrance and exit of the submersible pump, and the casing cylinder is placed laterally at the bottom in the water tank. The inside of the water tank and the inside of the casing cylinder are communicated via an on-off valve, and the submersible pump with the discharge port connected to the connecting cylinder part of the lid is housed in the casing cylinder, and the submersible pump is maintained and inspected as described above. At that time, close the on-off valve, open the drain plug on the lid, drain only the water in the casing cylinder, then remove the lid, take the submersible pump out of the water tank integrally with the lid, and let the water in the water tank It can be said to be water saving because it is left in the aquarium.

Japanese Utility Model Application Laid-Open No. 62-173591 discloses that a submersible pump in which a discharge port is connected to a connecting cylinder portion of a lid is placed horizontally at the bottom of a water tank while being naked, and the submersible pump is used for maintenance and inspection. Is a full drainage type that opens the drain port at the bottom of the water tank, drains all the water in the water tank to the outside, then removes the lid and removes the submersible pump integrally with the lid, suitable for small water tanks with small volume .

<Problems to be Solved by the Invention> In any of the above conventional examples, when the lid is removed from the inlet / outlet of the submersible pump and the submersible pump is taken out of the water tank integrally with the lid, the drain pipe connected to the connection cylinder portion of the lid. It is necessary to remove the flange connection part in the middle of the process, and when repairing it, it is necessary to reconnect the water discharge pipe at the flange connection part.

Usually, this outflow piping is subjected to cold protection lagging, so each time the submersible pump is maintained or inspected, the cold protection lagging must be removed from the outflow piping or the cold protection lagging must be reattached. It takes a lot of time to disconnect and reconnect the drain pipes.

<Means for Solving the Problems> In view of the above, the present invention allows the submersible pump to be taken out of the water tank without removing the flange joint of the water discharge pipe. Attaching a lid member for closing the entrance from the outside of the water tank to a tank wall having an entrance for taking in and out a rod-shaped submersible pump immersed therein, and attaching an auxiliary member adjacent to the lid member, In the lid member, a connection tube portion connected to the discharge port of the submersible pump is provided on the inner surface, one end communicates with the connection tube portion, and the other end is provided on the outer surface with a water passage that opens toward the auxiliary member. In the auxiliary member, one end communicates with the other end of the water passage of the lid member, and the other end is provided with a water passage having a connection port to which a water discharge pipe outside the water tank is connected,
The lid member can be attached and detached with the auxiliary member attached to the tank wall.

It is preferable that a projecting piece facing the lid member and the auxiliary member is provided on an outer surface, and the other end of the water channel of the lid member and one end of the water channel of the auxiliary member are opened to the respective projecting pieces.

<Examples> In each of the illustrated embodiments, 1 is a water tank, 2 is an entrance and exit of a rod-shaped submersible pump P opened below a tank wall 1 'of the water tank 1, 3 is a lid member for closing the entrance 2 and 4 Is an auxiliary member that is attached to the tank wall 1 'adjacent to the lid member 3, and the lid member 3 and the auxiliary member 4 are right-angled projecting pieces 3' facing each other when attached adjacent to the tank wall 1 'or A protruding piece 4 'is provided on the outer surface, and is formed of plastic, metal, or the like.

The lid member 3 has a connecting cylinder portion 5 connected to the discharge port of the submersible pump P by being screwed into the inner surface, and one end communicates with the connecting cylinder portion 5 on the outer surface and the other end opens to the protruding piece 3 ′. It has a waterway 6. Further, the auxiliary member 4 has a water channel 7 having one end opened to the protruding piece 4 '. One end of the water channel 7 having the projecting piece 4 ′ opened communicates with the other end of the water channel 6 opened to the projecting piece 3 ′ when the projecting piece 4 ′ faces the projecting piece 3 ′ of the lid member 3.
The other end of the water channel 7 is a connection port 9 for connecting a water discharge pipe 8 outside the water tank 1.

In addition, the water discharge pipe 8 is provided with a flange connecting portion 8 'for connecting the water discharge pipes 8 to each other.

Reference numeral 10 denotes a packing inserted between the tank wall 1 'and the two members 3, 4 when the lid member 3 and the auxiliary member 4 are attached to the tank wall 1'. 2 and openings 3 ', 4' of the two members 3, 4
A right angle protruding piece 12 sandwiched between the
The other end of the channel 6 opened to the projecting piece 3 'and the projecting piece 4'
There is provided a relay hole 13 for relaying one end of the water channel 7 which is opened to the outside.

The lid member 3 is provided with a seal connector 14 for sealing and penetrating a cable for supplying power to the motor of the submersible pump P.

FIGS. 2 to 4 show an embodiment in which the inlet / outlet 2 of the submersible pump P at the lower part of the insertion wall 1 'of the water tank 1 is closed from the outside with a cover member 3 in the same manner as in the above-described conventional water-saving type. As shown in the figure, a housing cylinder 15 which is placed laterally on the bottom wall of the water tank 1 and concentrically houses the submersible pump P has a flange 16 larger than the entrance 2 at the front end. The packing 10 is applied from the inside through the packing 10 ′ and the packing 10 is applied from the outside. The openings 11 and 11 ′ of the packings 10 and 10 ′ are aligned with the entrance 2. 1
A bolt 17 is passed through the hole around 0 ′, around the tank wall 1 ′ and around the packing 10, and a nut 18 is screwed into each bolt 17 from outside the water tank 1 and tightened against the packings 10, 10 ′. Is supported by a base fixed on the bottom wall, whereby the housing cylinder 15 is placed laterally on the bottom wall of the water tank 1.

The flange 16 of the housing tube 15 has the same shape and size as the facing portions of the packings 10, 10 '.

Then, the submersible pump P, which is attached by screwing the connecting cylinder part 5 of the lid member 3 into the discharge port or the like, is charged from the motor part into the housing cylinder 15 through the entrance 2.

In this case, spacers that are in sliding contact with the inner circumference of the housing cylinder 15 are attached to the outer periphery of the motor-side end of the submersible pump P at intervals in the circumferential direction so that the spacers are concentrically held in the housing cylinder 15. To

The mounting hole 3a provided in the cover member 3 is aligned with the nut 18 in the same arrangement as the bolt 17 while pushing the submersible pump P completely into the housing cylinder 15, and the mounting hole 3a is fitted into the nut 18. Then, the peripheral portion of the lid member 3 is pressed against the packing 10 from the outside, and a washer 19 having a diameter larger than that of the mounting hole 3a is fitted to a bolt 17 protruding from each mounting hole 3a.
Is screwed in, and the doorway 2 is closed with the lid member 3.

Further, as shown in FIG. 4, unlike the lid member 3, the auxiliary member 4 does not need to be removed, so it is applied to the packing 10 from the outside, and the collar 16, the packing 10 ', the tank wall 1', the packing The bolt 17 passed through 10 may be taken out of the mounting hole 4a, and the nut 18 may be screwed in and fixed.

As a result, the projecting piece 3 'of the lid member 3 and the projecting piece 4' of the auxiliary member 4 face each other with the projecting piece 12 of the packing 10 interposed therebetween.
The water passage 6 of the lid member 3 and the water passage 7 of the auxiliary member 4 communicate with each other through a relay hole 13 formed in the projecting piece 12. These protruding pieces 3 ', 4', 12
The bolt 21 (see FIG. 3) is also passed through, and tightened with a nut. The water outlet pipe 8 is connected to the connection port 9 at the other end of the water channel 7 of the auxiliary member 4.

In addition, as shown in FIG.
A drain plug 23 is provided and placed, and a power supply cable is passed through the seal connector 14 in advance.

In this way, water is supplied to the water tank 1, the on-off valve V attached to the storage cylinder 15 is opened, the water in the water tank 1 flows into the storage cylinder 15, the submersible pump P is operated, and the water is discharged to the water discharge pipe 8 through the water channels 6, 7. be able to.

In addition, an automatic exhaust valve is attached to the upper surface of the storage cylinder 15, and the air in the storage cylinder 15 is discharged into the water tank 1 by the water that flows into the storage cylinder 15 from inside the water tank 1 by the automatic exhaust valve.

To take the submersible pump P out of the water tank 1 for maintenance and inspection, the on-off valve V is closed, and the ventilation plug 22 and the drain plug 23
To remove the air vent hole and the drain port, drain the water in the storage cylinder 15 out of the drain port, remove all nuts of the bolts 17 and 21 attaching the lid member 3, and pull the lid member 3. What is necessary is just to pull out the submersible pump P from the inside of the storage cylinder 15 integrally (refer to the broken line in FIG. 4). When the maintenance and inspection are completed, the submersible pump P is placed in the housing cylinder 15 in the reverse order to the above operation, and the entrance 2 is closed with the cover member 3. The auxiliary member 4 and the water discharge pipe 8 connected thereto may be left as it is.

FIG. 5 shows the water tank 1 in the same manner as the above-mentioned conventional full drainage type.
This shows an embodiment in which the inlet / outlet 2 of the submersible pump P at the lower part of the tank wall 1 'is closed from the outside with a lid member 3 adjacent to the auxiliary member 4, and in this case, a water tank for maintenance and inspection of the submersible pump P When taking it out, the entire amount of water in the tank 1
Since the water is drained from the drain attached to the water tank 1, the cover member 3 does not need to be provided with an air vent hole and a drain port.

In this embodiment, the end having the discharge port of the submersible pump P is supported by the connecting cylinder 5 of the lid member 3 that closes the entrance 2, and the motor-side end of the submersible pump P contacts the bottom wall of the water tank 1. A base (not shown) is attached, and the submersible pump P is placed directly on the bottom wall. Therefore, when performing maintenance / inspection of the submersible pump P, the drain (not shown) provided on the bottom wall of the water tank 1 is opened, all the water in the water tank 1 is drained, and the lid member 3 is similarly attached. The nuts of the bolts 17 and 21 are all removed, and the submersible pump P is pulled out from the entrance 2 together with the lid member 3. When the inspection is over, repair in the reverse order.

In the above two embodiments, the entrance 2 of the submersible pump P
Is provided below the tank wall 1 ', and the submersible pump P is set horizontally on the bottom wall. However, the present invention is not limited to this. It can also be applied to the case where it is installed vertically in a water tank.

<Effect of the Invention> According to the present invention, an auxiliary member is attached to the tank wall separately from the lid member that closes the entrance of the submersible pump on the tank wall of the water tank, and a water outlet pipe outside the water tank is connected to this auxiliary member. The drainage pipe can be left attached to the tank wall, and the submersible pump can be pulled out of the tank together with the lid member for maintenance and inspection.

Therefore, every time the submersible pump is maintained or inspected, it is not necessary to remove the outflow piping at the flange joint or reconnect the outflow piping. By opening it, maintenance and inspection of the submersible pump can be easily performed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a lid member and an auxiliary member used in the present invention, FIG. 2 is a side view showing an installation state of an embodiment of the present invention, and FIG. FIG. 4 is a partially enlarged plan view of FIG. 2, and FIG. 5 is a side view showing an installation state of another embodiment of the present invention. In the figure, 1 is a water tank, 1 'is a tank wall, 2 is an inlet / outlet of a submersible pump P, 3 is a cover member, 3' is a protruding piece, 3a is a mounting hole, 4 is an auxiliary member, 4 'is a protruding piece, and 4a is Mounting hole, 5 is a connecting cylinder portion of the lid member 3, 6 is a water channel of the lid member 3, 7 is a water channel of the auxiliary member 4, 8
Is a water discharge pipe, 8 'is a flange joint, 9 is a connection port, 17 is a bolt, 18 is a nut, 19 is a washer, 20 is a nut, and 21 is a bolt.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F04D 13/08 F04D 29/60

Claims (2)

(57) [Claims] 1. A lid member for closing the entrance from the outside of the water tank is attached to a tank wall having an entrance for taking in and out a rod-shaped submersible pump immersed in the interior of the water tank, and adjacent to the lid member. The connecting member is provided on the inner surface of the lid member and connected to the discharge port of the submersible pump. One end communicates with the connecting tube and the other end opens toward the auxiliary member. The auxiliary member has a water channel having one end communicating with the other end of the water channel of the lid member and the other end having a connection port to which a water discharge pipe outside the water tank is connected, The submerged pump installation device in a water tank, wherein the lid member can be attached to and detached from the tank wall in a state where the auxiliary member is attached to a wall. 2. The apparatus for installing a submersible pump in a water tank according to claim 1, wherein projecting pieces respectively facing the lid member and the auxiliary member are provided on an outer surface, and the other end of a water channel of the lid member and the auxiliary member are provided. An apparatus for installing a submersible pump in a water tank, wherein one end of a water channel of the member is opened to each of the projecting pieces.