JP3045595B2 - Automatic water supply unit for assembled water tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic water supply unit for a water tank having a built-in submersible pump.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional automatic water supply unit for an assembled water tank has a discharge pressure control device 2 directly installed on the ground or floor around a water tank 1, and the discharge pressure control device 2 is provided. The submersible pump 3 installed in the water tank 1 was connected by a flexible joint 100. The water tank 1 is installed on a gantry 5 fixed on a base 4 installed on the ground or a floor of a roof. Submersible pump 3 has casing 6
The casing 6 is fixed in the water tank 1 by a support base 7. The flexible joint 100 is connected to the discharge flange 8 of the submersible pump 3. The discharge pressure control device 2 includes a pressure reducing valve 1
0, a bypass pipe 11, an accumulator tank 12, a unit gate valve 13, and a pressure switch 14.

[0003]

In the conventional example, depending on the location of the assembled water tank, the arrangement between the submersible pump 3 and the discharge pressure control device 2 becomes complicated, and the flexible joint 100 absorbs only about 2-3 mm of displacement. Therefore, there is a possibility that the mounting may not be possible depending on the finishing condition of the floor or the like at the installation location. Further, when the submersible pump 3 and the discharge pressure control device 2 are far apart, it is difficult to accurately detect the discharge pressure of the pump, and there is a problem in the reliability of the pressure control.

In view of the above, the present invention enables the installation of a discharge pressure control device independent of the condition of the floor around the water tank and the like, and the automatic water supply of the assembled water tank capable of accurately detecting the pump discharge pressure. The purpose is to provide a unit.

[0005]

In order to achieve the above-mentioned object, the present invention extends a gantry to the outside of a water tank and installs a discharge pressure control device on the extended gantry.

[0006]

By installing the discharge pressure control device on a gantry extending outside the water tank, the discharge pressure control device can be installed without being affected by the condition of the floor around the water tank. In addition, the piping on the pump discharge side allows accurate detection of the pump discharge pressure. Furthermore, it is not necessary to provide a flexible joint.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a gantry 5 is fixed on a base 4 installed on the ground or on the floor of a roof, and an assemblable water tank 1 is installed on the gantry 5. A submersible pump 3 similar to that shown in FIG. 3 is installed in the water tank 1, and a discharge pressure control device 2 connected to the submersible pump 3 is installed outside the water tank 1. This discharge pressure control device 2 also has the same components as the conventional example shown in FIG. 3, but in the present invention, the gantry 5 on the discharge side of the submersible pump 3 is extended to the outside of the water tank 1, and Discharge pressure control device 2 on extended base 51
Is installed. In this case, the gantry 5 and the extended gantry 5
1 need not necessarily be on the same plane, and may be fixed above or below the gantry 5 with bolts or the like. Further, the extending base is not necessarily required to be on the pump discharge side, and may be extended in accordance with the surrounding circumstances. The gantry 5 is fixed on the base 4 using H steel as shown in FIG. A portion of the mount 5 on the discharge side of the submersible pump 3 is extended to the outside of the water tank 1 to form an extended mount 51. The discharge pressure control device 2 installed on this extended base 51 is:
Since it is arranged on the discharge side of the submersible pump 3, the pump pressure can be reduced and the control device itself can be downsized. Further, the connection between the submersible pump 3 and the discharge pressure control device 2 can be directly connected to the discharge flange 8 of the submersible pump 3 without using a conventional flexible joint.

[0009]

As described above, according to the present invention, the gantry is extended to the outside of the water tank, and the discharge pressure control device is installed on the extended gantry. Since it can be installed without being influenced by the influence and the pump discharge pressure can be accurately detected, the reliability of the pressure control is improved. In addition, since it is not necessary to use a flexible joint, the automatic water supply unit can be reduced in size, and there is no failure due to deformation and fluctuation of the flexible joint, thereby improving reliability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of the present invention.

FIG. 2 is a perspective view of a gantry provided on a base.

FIG. 3 is a partially broken perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water tank 2 Discharge pressure control device 3 Submersible pump 4 Base 5 Base 51 Extended base

Claims (1)

(57) [Claims] 1. A gantry is fixed on a base mounted on the ground or on a floor of a roof, and an assemblable water tank is installed on the gantry.
In an automatic water supply unit of an assembled water tank in which a submersible pump is installed in the water tank and a discharge pressure control device connected to the submersible pump is installed outside the water tank, the base is extended to the outside of the water tank, and An automatic water supply unit for an assembling water tank, characterized in that a discharge pressure control device is installed in the water tank.