JP3939463B2 - Vertical pump device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vertical pump device, and more particularly, to a vertical pump device including a base plate inclination suppressing means for preventing the base plate from inclining due to a thrust applied to a pump discharge port due to a discharge pressure of the pump.
[0002]
[Prior art]
There is a vertical pump as a pump for transferring, draining and pressurizing fresh water, sewage and other liquids. In the vertical pump, vibration caused by operation propagates to the outside and vibration pollution or noise pollution caused by vibration propagation becomes a problem. Conventionally, in order to prevent the vibration of the pump from propagating to the outside via the foundation and the discharge pipe, a flexible tube is connected to the discharge port and the pump equipment (pump and drive power source, etc.) is damped. The structure supported by the device is adopted.
[0003]
In the configuration using a flexible tube or a vibration isolator as described above, when the thrust due to the discharge pressure of the pump is applied to the discharge port of the pump, the vibration isolator supporting the pump equipment is for vertical load. It is difficult to receive the thrust applied to the pump discharge port due to the discharge pressure of the pump. Therefore, a flexible tube is not normally used.
[0004]
In recent years, regulations on vibration and noise have become stricter, and even in a small pump facility that does not require conventional measures, measures for reducing noise and vibration at the pump station boundary have become necessary.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and an object of the present invention is to provide a vertical pump device that can prevent vibrations of the pump from being transmitted to the floor, walls, and piping of the pump chamber with a simple configuration.
[0006]
[Means for Solving the Problems]
In order to solve the above problem, the invention according to claim 1 is a vertical type in which a flexible tube is connected to a discharge port opened in a lateral direction of a pump, and a base plate on which the pump is mounted is supported by a vibration isolator. The pump device is characterized in that a base plate inclination suppression means is provided that receives a horizontal load and a vertical load applied to the base plate by a thrust applied to the pump discharge port by a discharge pressure and suppresses the inclination of the base plate. To do.
[0007]
By providing the base plate inclination suppressing device as described above, thrust is generated at the pump discharge port when the pump is operated and discharged and pressure is applied. Also, if there is a difference between the height of the center of the flexible tube connected to the discharge port and the height of the base plate, a moment is generated by the product of this difference and thrust, which acts to tilt the base plate. Since the base plate inclination suppressing means receives the load for moving the base plate in the horizontal direction and the load for moving in the vertical direction due to the moment, the horizontal movement and inclination of the base plate can be suppressed.
[0008]
The invention according to claim 2 is the vertical pump device according to claim 1, wherein the pump has a suction opening in the water tank, and the base plate drives the pump in addition to the pump. An electric motor is also mounted, and the base plate inclination suppression means is composed of an elastic body that receives a horizontal load and a vertical load applied to the base plate by a thrust applied to the pump discharge port by the discharge pressure. Features.
[0009]
The conventional pump with the suction port of the conventional pump opened in the water tank and the discharge port opened in the lateral direction of the pump installs the pump on the water tank. It is difficult to use the pump, and countermeasures against vibration propagation of the pump and noise caused by vibration often have to be performed outside the pump station, resulting in a large scale and high countermeasure costs. In the present invention, as described above, the base plate inclination suppressing means is composed of an elastic body that receives a horizontal load and a vertical load applied to the base plate by the thrust applied to the pump discharge port by the discharge pressure. It can be installed at a low cost even at a machine place, and the cost of countermeasures against vibrations and noise caused by vibrations can be greatly reduced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 to FIG. 4 are diagrams showing a configuration example of a vertical pump device according to the present invention, FIG. 1 is an installation configuration diagram of the vertical pump device, and FIG. 2 is a plan view of the vertical pump device as viewed from above. 3 is a sectional view taken along the line XX in FIG. 2, and FIG. 4 is a sectional view taken along the line YY in FIG.
[0011]
In the figure, reference numeral 2 denotes a pump. The pump 2 is a vertical pump whose suction port 3 opens into the water tank 16 and whose discharge port 4 protrudes laterally and opens. The pump 2 and the electric motor 1 that drives the pump 2 are mounted on the base plate 8.
[0012]
A flexible pipe 5 is connected to the discharge port 4, and a discharge pipe 6 is connected to the flexible pipe 5. The discharge pipe 6 is fixed to the floor 10 above the water tank 16 by a discharge pipe receiver 7. As shown in FIG. 2, the base plate 8 on which the pump 2 and the electric motor 1 are mounted is supported by a plurality of (four in the figure) vibration isolators 12. The vibration isolator 12 receives vertical loads such as the pump 2 and the electric motor 1 and is attached to the floor 10 as shown in FIG. In FIG. 1, 11 is the water surface.
[0013]
Reference numeral 9 denotes a base plate inclination suppressing device. As shown in FIG. 3, the base plate inclination suppressing device 9 has an elastic body 13 that receives an upward load on the inner surface of a U-shaped frame 9-1, and a downward direction. In this configuration, an elastic body 14 that receives a load and an elastic body 15 that receives a load in a horizontal direction due to a thrust force are fixed. The elastic body 13 and the elastic body 14 are arranged vertically so as to sandwich the base plate 8, and the elastic body 15 is arranged so as to face the outer peripheral end face of the base plate 8. A plurality (four in the figure) of the base plate inclination suppressing devices 9 are fixed to the floor 10 around the base plate 8.
[0014]
In the vertical pump device having the above-described configuration, when the electric motor 1 is started and the pump 2 is operated and the discharge pressure is applied, the discharge pipe 6 is fixed by the discharge pipe receiver 7, so that it occurs at the position of the flexible pipe 5. A thrust is applied to the discharge port 4. As shown in FIG. 2, since the vibration isolator 12 receives only a load in the vertical direction, the base plate 8 tries to move in the horizontal direction by thrust, and this is applied to the base plate inclination suppressing device 9 having the configuration shown in FIG. It is received by the elastic bodies 13, 14, and 15.
[0015]
The elastic bodies 13, 14, and 15 may be made of an elastic material such as rubber, or may be made of an elastic body such as a spring.
[0016]
In the base plate inclination suppressing device 9 constituted by the elastic bodies 13, 14, and 15, the elastic body 15 receives the thrust generated at the portion of the flexible tube 5 as a vertical load at the end face of the base plate 8. Since the thrust generated in the portion of the flexible tube 5 is generated at a position higher than the base plate 8, the moment of the product of the difference between the height of the center of the flexible tube 5 and the base plate 8 and the thrust is the force that tilts the base plate 8. Although acting, the load in the vertical direction due to this moment is received by the elastic bodies 13 and 14 of the base plate tilt suppressing device 9 arranged on the outer periphery of the base plate 8, and the vertical movement of the base plate 8 is suppressed to tilt the base plate 8. Suppress.
[0017]
The configuration of the base plate inclination suppressing device 9 is an example, and the present invention is not limited to this. In short, the horizontal load applied to the base plate by the thrust applied to the pump discharge port by the discharge pressure is important. And what is necessary is just to receive the load of an up-down direction and suppress the inclination of a baseplate.
[0018]
Further, the configuration of the vertical pump is not limited to that shown in FIG. In short, a vertical pump having a configuration in which a flexible pipe is connected to a discharge port protruding in the lateral direction of the pump and a base plate on which the pump is mounted is supported by a vibration isolator.
[0019]
【The invention's effect】
As described above, according to the invention described in each claim, the following excellent effects can be obtained.
[0020]
According to the first aspect of the present invention, when a discharge pressure is applied by operating the pump, a thrust is generated at the pump discharge port, and a moment is generated by the product of the thrust and the height difference between the center of the base plate and the flexible tube. The load that causes the base plate to move in the horizontal direction and the load in the upper limit direction that tilts the base plate act on the base plate. The horizontal load and the vertical load are used to suppress the base plate tilt. Therefore, the horizontal movement and inclination of the base plate are suppressed.
[0021]
According to the second aspect of the present invention, the base plate inclination suppressing means is configured by an elastic body that receives a horizontal load and a vertical load applied to the base plate by a thrust applied to the pump discharge port by the discharge pressure. Therefore, it can be installed at any pump station at a low cost, and the cost for vibration countermeasures and noise countermeasures caused by vibrations can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an installation configuration of a vertical pump device according to the present invention.
FIG. 2 is a plan view of the vertical pump device according to the present invention as viewed from above.
3 is a cross-sectional view taken along the line XX in FIG. 2;
4 is a cross-sectional view taken along the line Y-Y in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electric motor 2 Pump 3 Suction port 4 Discharge port 5 Flexible tube 6 Discharge piping 7 Discharge piping receptacle 8 Base plate 9 Base plate inclination suppression apparatus 10 Floor 11 Water surface 12 Vibration isolator 13 Elastic body 14 Elastic body 15 Elastic body 16 Water tank

Claims (2)

In a vertical pump device having a configuration in which a flexible tube is connected to a discharge port opened in a lateral direction of the pump, and a base plate on which the pump is mounted is supported by a vibration isolator,
A standing plate characterized in that it is provided with a base plate inclination suppressing means for receiving a horizontal load and a vertical load applied to the base plate by a thrust applied to the pump discharge port by a discharge pressure and suppressing the inclination of the base plate. Type pump device. The vertical pump device according to claim 1,
The pump has a structure in which a suction port is opened in the water tank, and the motor for driving the pump is mounted on the base plate in addition to the pump.
The base plate inclination suppressing means is formed of an elastic body that receives a horizontal load and a vertical load applied to the base plate by a thrust applied to the pump discharge port by the discharge pressure. Type pump device.

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