JPH08550Y2 - Pumping device for aquarium pump - Google Patents

Description

[Detailed Description of the Invention] <Industrial field of application> The present invention encloses the above-mentioned pump and a cap lid for closing a pump extraction hole provided on a discharge pipe of a rod-shaped submersible pump placed horizontally at the bottom of a water tank. Tighten the flange on the discharge side end of the cylindrical casing to the outer periphery of the pump extraction hole at the bottom of the side wall of the water tank in a watertight manner,
The present invention relates to a device for extracting a pump in a water tank in which the water intake of the tubular casing is closed at any time so that the rod-shaped submersible pump can be taken out of the tank.

<Prior art> When a rod-shaped submersible pump is laid horizontally on the bottom of the water tank and taken out for inspection and repair, the valve of the water absorption pipe of the tubular casing that encloses the pump is closed and the tubular casing is left in the water tank. The method of pulling out only the pump from the pump extraction hole at the bottom of the side wall was founded by the present inventor.Unlike the conventional method, the water in the aquarium is completely dropped, the pump is removed, and the pump is lifted up and taken out. Simplified. As a known technique for opening and closing the valve of the water absorption pipe of the cylindrical casing, there is JP-A-60-212698 of the present applicant.
There are actual development Sho 62-173590 etc.

The former has a valve in the middle of the water absorption pipe of a cylindrical casing that opens into the water tank, and the valve is exposed on the bottom of the tank bottom only near the valve. The valve extends in the vicinity of the side wall opposite to the side wall having the pump extraction hole, and the drive mechanism attached to the side wall pushes and pulls the valve in the tank to close and open the tip of the water absorption pipe.

<Problems to be solved by the invention> Conventionally, a water absorption pipe for taking in water was installed inside a cylindrical casing, and this was opened and closed by a valve.Therefore, a water absorption pipe is indispensable, and if the water tank is narrow or short, water absorption is required. The piping of the pipe was difficult. Or the pipe was bent and complicated. On the contrary, if the water tank is long and large, there is a waste of lengthening the water absorption pipe when the device of the above-mentioned Japanese Utility Model Publication No. Sho 62-173590 is applied.

The position of the valve that opens and closes the water suction pipe is close to the side wall on the side opposite to the side wall with the pump extraction hole and the bottom wall.Therefore, turn from the front of the pump extraction hole for pump extraction work to that side. There was a lot of trouble in operating the valve, and it was often necessary to operate the valve in a cramped position near the opposite side wall and bottom wall.

Discarding the conventional idea that it is unavoidable as described above, the present invention aims to make it possible to open and close the intake port of the cylindrical casing near the pump outlet hole on the side wall, no matter where the intake port is. I caught it as.

<Means for Solving the Problems> Therefore, the present invention proposes that the rod-shaped submersible pump (2) has an extraction hole (7) at the lower part of the side wall (1a) below the rod-shaped submersible pump (2). A cylindrical casing (5) enclosing the submersible pump (2) is arranged laterally, and a flange (6) at the discharge side end of the cylindrical casing and the outer circumference of the discharge pipe (3) of the rod-shaped submersible pump. And a collar lid (4) provided on the inside for closing the extraction hole (7) from the outside so as to overlap the inside and outside of the peripheral portion of the extraction hole (7), and removing the flange (6) and the side wall (1a). Peripheral part of the hole,
Also, a plurality of bolts (8) are pierced through the collar lid (4) to be watertightly tightened with a nut (8a), and the flange lid (4) can be loosened to remove the nut from the bolt. In the take-out device, one of the bolts (8) is a hollow bolt (8) having a hollow through hole (20), and a water intake port (9) provided in the tubular casing (5) is opened and closed. A lid (10) for attaching the lid, and an inner end portion is attached to the lid, and a remote control rod (11) for opening and closing the lid is passed through the hollow through hole (20) of the hollow bolt (8 '), A handle (12) is detachably fixed to an outer end portion of the operation rod (11) protruding outward.

<Embodiment> FIGS. 1 to 7 show an embodiment of the present invention, in which a pump outlet hole is provided on the outer circumference of a discharge pipe 3 of a rod-shaped submersible pump 2 which is horizontally placed at the bottom of a water tank 1. The closing collar lid 4 and the collar 6 at the discharge side end of the tubular casing 5 enclosing the submersible pump 2 are watertightly tightened with bolts 8 to the outer periphery of the pump withdrawal hole 7 at the bottom of the side wall 1a of the water tank. At any time, the water intake 9 into the tubular casing 5 is closed, and as described later, only the collar lid 4 is removed so that the submersible pump 2 together with the discharge pipe can be extracted from the tank through the pump extraction hole 7 ( (Dashed line in Figure 1). Outside the side wall 1a with the pump extraction hole 7, there is one end of a remote control rod 11 for opening and closing the lid 10 of the water intake 9 of the tubular casing 5, and a handle 12 for rotating this. Both side walls 1a and 1c and bottom wall 1b of the aquarium are FRP
(Reinforced plastic). Reference numeral 13 is a pumping pipe, 14 is a power supply line to the pump motor, 15 is a bearing of the operating rod, 16 is a knob-shaped female screw shown in FIG.
It corresponds to an opening / closing mechanism that rotates the lid 10 by rotating 11 times.

The threaded portion 11a at the inner end of the remote control rod 11 is fitted in the hooked female thread 16. The narrowed central portion of the female screw 16 is hexagonal and is non-rotatably fitted in the cut groove 17 of the extension portion of the lid 10 as shown in FIG. When the threaded portion 11a of the remote control rod supported in place by the backing plate 18 rotates, the female screw 1
Since 6 is pushed and pulled, the lid 10 moves from the solid line position in FIG. 3 to the chain line position to open and close. The lid 10 pivots with a fulcrum 19 on a bracket on the outer edge of the water intake 9, and rotates to close the water intake 9 in a watertight manner. The extension line of the cut groove 17 is made so as to pass through the fulcrum 19.

The outer end of the remote control rod 11 has a collar 6 at the pump discharge side end of the tubular casing and a collar lid 4 at the discharge pipe of the submersible pump.
Through the hollow through hole 20 of one of the plurality of bolts 8 for tightening on the periphery of the pump extraction hole 7 and projecting to the outside of the side wall 1a. The other tightening bolt 8 is an ordinary bolt, but 8 '
The only one is a special hollow bolt shown in Figs. That is,
The central portion of the bolt is a hollow through hole 20 through which the remote control rod 11 can pass. Then, the O-ring is screwed and fixed to the head of the bolt with the cap nut 21 to seal and
Hold the remote control rod 11 in the axial direction.

There are two nuts 8a for each bolt 8, 8'through the tank, one for tightening the side wall 1a to fix the flange 6 of the tubular casing to the inner surface of the side wall, and the other for underwater through the washer 22. The peripheral portion of the round hole 23 that receives the nut of the collar cover 4 for closing the extraction hole of the discharge pipe 3 of the pump is tightened. As a result, the nut tightening via the washer 22 is loosened, the collar lid 4 of the discharge pipe is removed from the bolt, and the rod-shaped submersible pump together with the discharge pipe can be pulled out from the extraction hole 7.

Therefore, by turning the remote control rod 11 with the handle 12, the first
When the lid 10 closes the water intake 9, the handle 12 is removed from the remote control rod 11, and the nut 8a tightening the collar lid 4 is loosened and removed from the bolt. The collar lid 4 can be pulled out together with the submersible pump 2 and the discharge pipe 3. In this case, the connection of the flange connection portion 13 'in the middle of the pumping pipe 13 is disconnected and placed.

FIG. 7 is an exploded explanatory view of FIG. 6, and FIG. 8 is another example in which the cap nut 21 containing the O-ring of FIG. 6 is screwed and fixed to the outer end of the hollow bolt 8 '.

9 and 10 show an embodiment of a watertight structure of the remote control rod 11 protruding to the outside of the side wall 1a. In FIG. 9, a watertight seal plate 24 is inserted between the head of the hollow bolt 8'and the flange 6 of the casing, and between the flange 6 and the side wall 1a. Further, without inserting a seal on the inner surface of the hollow through hole 20 of the hollow bolt 8 ', an O-ring 26 is put into the cap nut 25 tightened at the end of the bolt, and the O-ring is compressed to seal the operation rod 11 in the axial direction. Hold on. The sealing plate 24a inserted between the closing collar lid 4 and the side wall 1a does not necessarily have to be watertight.

In the case of FIG. 10, the cap nut 25 containing the O-ring 26 is screwed onto the head of the bolt 8'for sealing and holding the operating rod in the axial direction.

Although a few embodiments have been described above, it is needless to say that the present invention can be variously changed and applied by a well-known technique of a mechanical designer without changing the gist thereof.

<Effects of the Invention> This invention is equipped with an outer end of a remote control rod and a handle for turning the same on the outer surface of the peripheral edge of the pump extraction hole on the side wall of the water tank. Since the lid of the water intake of the tubular casing that wraps the submersible pump is opened and closed, the handle for opening and closing the water intake can be provided at the pump removal work position regardless of the position of the water intake. Therefore, it is not necessary to go under the bottom wall of the water tank or go around to the side wall opposite to the water tank in order to open and close the lid of the water intake of the tubular casing.

In the past, when the water tank was narrow or short, this invention can be easily applied to the case where the water absorption pipe or valve could not be attached to the tubular casing.Therefore, during inspection and repair, remove the pump from the side wall of the water tank. The effect of further popularizing this convenient method of taking out from the vent is great. A hollow casing is used as a bolt to attach the flange of the tubular casing to the pump extraction hole or the lid of the discharge pipe of the submersible pump, and the remote control rod is passed through it. Since it is not necessary to form a hole for passing through, it is possible to save the labor for processing the sidewall.

[Brief description of drawings]

1 is an elevation view of an embodiment of the present invention, FIG. 2 is a perspective view of FIG. 1, FIG. 3 is an explanatory view of a lid opening / closing mechanism of FIG. 1, and FIG. FIG. 5 is a perspective view of the female screw, FIG. 5 is a front view of FIG. 1, FIG. 6 is an enlarged cross-sectional view of an essential part, FIG. 7 is a cross-sectional view of the components of FIG. 6 in an exploded state, and FIGS. FIG. 3 is a cross-sectional view of another three types of embodiments of the above main part. 1 ... Water tank, 1a, 1c ... Side wall of water tank, 1b ... Bottom wall of water tank, 2 ... Rod submersible pump, 3 ... Discharge pipe of submersible pump, 4 ... Tsuba lid on discharge pipe, 5: Cylindrical casing, 6: Collar at the discharge side end of the cylindrical casing, 7: Pump extraction hole formed on the side wall of the water tank, 8: Bolt,
8 '... Hollow bolt, 8a ... Nut, 9 ... Intake port of cylindrical casing, 10 ... Lid for opening / closing intake port, 11 ... Remote control rod for opening / closing lid, 12 ... Handle, 13 ... … Pumping pipe, 20… Shows the hollow through hole of the hollow bolt.

Claims (1)

[Scope of utility model registration request] 1. A rod-shaped submersible pump (2) at the bottom of the side wall (1a).
A cylindrical casing (5) enclosing the rod-shaped submersible pump (2) is arranged laterally below the inside of the water tank (1) having the extraction hole (7) of the discharge side end of the cylindrical casing. The collar (6) of the portion and the collar lid (4) which is provided on the outer circumference of the discharge pipe (3) of the rod-shaped submersible pump and closes the outlet hole (7) from the outside, the outlet hole (7) Put the nuts (8a) through the plurality of bolts (8) through the flange (6), the peripheral edge of the extraction hole of the side wall (1a), and the flange lid (4) by overlapping the inside and outside of the periphery of the flange (6).
In a take-out device for an in-water-tank pump, which is water-tightly tightened and loosened only by the collar lid (4) so that the nut can be removed from the bolt, one of the bolts (8) has a hollow through hole (20). A bolt (8) is attached to the tubular casing (5), and a lid (10) for opening and closing a water intake (9) provided in the casing is attached, and an inner end portion is attached to the lid to open and close the lid. The remote control rod (11) to be operated is passed through the hollow through hole (20) of the hollow bolt (8 '), and the handle (12) can be attached to and detached from the outer end of the operation rod (11) protruding outside the tank. A device for taking out a pump in a water tank, which is fixed to the.