JP2531498Y2 - Vertical shaft pump device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical shaft pump device, and more particularly to a vertical shaft pump device applied to a pump plant in which suction water tanks are arranged in a plurality of vertically stacked stages.

[0002]

2. Description of the Related Art In urban sewage and drainage facilities, suction water tanks requiring a large capacity are stacked vertically in two or more stages, for example, as shown by reference numerals 1A and 1B in FIG. A method is adopted in which the capacity of the suction tank is secured using the depth of the underground. And conventionally,
An independent pump is installed for each suction tank. In addition, the suction water tank may extend to three or more stages as necessary.

[0003]

[Problems to be solved by the invention] As described above, conventionally,
In a pump plant having a plurality of vertically arranged suction water tanks, an independent pump is installed for each suction water tank, so the following problems occur.

That is, the installation horizontal area of a plurality of pumps is large. In particular, when the height of the suction water tank is low, a plurality of pumps must be arranged on one floor, and this problem is further increased. Further, the cost of the pump increases, and an expensive pump plant including complicated piping is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. Therefore, a vertical pump device for a multistage suction water tank which can reduce the installation horizontal area of a plurality of pumps and reduce the cost is provided. The purpose is to provide.

[0006]

In order to solve the above-mentioned problem, a vertical shaft pump device according to the present invention includes a plurality of vertical shaft pumps respectively installed in suction water tanks which are arranged in a plurality of vertically stacked stages. The main shaft of each of these vertical pumps is connected to the drive shaft in a single shaft, and a gate valve is provided on a suction pipe of each vertical pump, and a gate valve or a check valve is provided on a discharge pipe.

[0007]

According to the above-mentioned means, since a plurality of vertical pumps are connected in a vertical single-shaft configuration, only one pump installation horizontal area is required. In addition, although the impeller of each vertical shaft pump rotates at the same time, if there is a suction water tank that does not require pumping, if the gate valve of the vertical pump connected to the suction water tank is closed, the vertical pump will be in the air. Since the operation is performed, power consumption is extremely small.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to FIG.

In FIG. 1, 1A is the upper suction water tank, and 1B is the lower suction water tank, as described above. According to the present embodiment, these suction water tanks 1A, 1B are provided with vertical pumps 2A, 2B, respectively, and the main shaft 3A of the upper vertical pump 2A is connected to a drive shaft of a driving machine (not shown). 4A is connected via a shaft coupling 5A. The main shaft 3A is supported by a frame 6A having a bearing, and the pump casing 7A is supported by a frame 9A via a frame 8A.
It is fixed to. Further, a gate valve 11A is connected to the suction pipe 10A communicating with the upper suction water tank 1A, and a discharge pipe 12A is connected to the suction pipe 10A.
A is provided with another gate valve 13A.

On the other hand, a vertical shaft pump 2B used for pumping the lower suction water tank 1B is connected via a shaft coupling 5B to a drive shaft 4B whose main shaft 3B is connected to the main shaft 3A of the above-mentioned vertical shaft pump 2A. , Are uniaxial. The main shaft 3B is supported by a frame 6B having a bearing, and the pump casing 7B is fixed to a gantry 9B via a frame 8B. Further, a gate valve 11B is provided on the suction pipe 10B communicating with the lower suction water tank 1B, and another gate valve 13B is provided on the discharge pipe 12B.

The discharge pipe 12B of the lower vertical shaft pump 2B is connected to the lower end of the common discharge pipe 15 via the expanding pipe 14. Further, the discharge pipe 12A of the upper vertical shaft pump 2B described above is connected to an intermediate portion of the common discharge pipe 15.

As described above, according to the present embodiment, two pumps 2 are used for pumping the upper and lower suction water tanks 1A and 1B, respectively.
Since the two vertical pumps 2A and 2B are connected to each other in a single vertical axis, only one pump installation horizontal area is required. Also, the impellers (not shown) of the upper and lower two vertical pumps 2A and 2B rotate simultaneously, but when one of the suction water tanks, for example, 1A, does not require pumping, the vertical pump connected to the suction water tank 1A. If the gate valves 11A and 13A of the 2A are closed, the vertical shaft pump 2A operates in the air, so that the power consumption is extremely small.

In the embodiment described above, the gate valves 13A and 13B provided in the discharge pipes 12A and 12B of the vertical shaft pumps 2A and 2B can be replaced with check valves. In addition, it goes without saying that the present invention can be similarly applied to a pump plant having three or more suction water tanks.

[0014]

As described above, the vertical shaft pump device according to the present invention includes a plurality of vertical shaft pumps respectively installed in suction water tanks arranged in a plurality of vertically stacked layers, and each of these vertical shaft pumps is provided. The main shaft is connected to the drive shaft in a single shaft, and a gate valve is provided in the suction pipe of each vertical shaft pump, and a gate valve or a check valve is provided in the discharge pipe. In addition, since the power consumption is reduced, the area of the pumping station for urban sewage and rainwater drainage can be significantly reduced, and pumping equipment can be installed even in the city center, which was previously impossible. And an excellent effect such as a reduction in cost.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a vertical shaft pump device according to the present invention.

[Explanation of symbols]

 1A, 1B Suction water tank 2A, 2B Vertical pump 3A, 3B Main shaft 4A, 4B Drive shaft 10A, 10B Suction pipe 11A, 11B Gate valve 12A, 12B Discharge pipe 13A, 13B Gate valve

Claims (1)

(57) [Scope of request for utility model registration] The present invention includes a plurality of vertical shaft pumps respectively installed in suction water tanks arranged in a plurality of vertically stacked stages, and a main shaft of each of the vertical shaft pumps is connected to a drive shaft in a single shaft. A vertical shaft pump device characterized in that a gate valve is provided in a suction pipe of each vertical shaft pump, and a gate valve or a check valve is provided in a discharge pipe.