JPH0634200U - Turbine / jet combination pump device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a turbine / jet combination pump device capable of easily and easily removing foreign matter from a nozzle, and resulting in a small increase in cost. [Structure] An opening / closing opening 9 provided in the casing 1 so as to face a jet nozzle 6 installed in the casing 1.
It is characterized by including. The foreign matter in the nozzle can be removed by opening the opening provided in the casing, and the device can be operated by closing it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a turbine / jet combined pumping device having a jet pump installed in a casing of a turbine pump.

[0002]

[Prior art]

 In a conventional turbine-jet combined pump device, as shown in FIG. 3 (the portions corresponding to those in the embodiment of the present invention are designated by the same symbols as in FIG. 1), a jet pump nozzle 6 and A diffuser 7 is provided in the turbine pump casing 1. Most of the fluid discharged from the impeller 5 flows out to the outside from the discharge port 3, but the remaining part is guided to the nozzle 6 and flows into the impeller 5 again together with the fluid from the suction port 2 via the diffuser 7. It

Since the nozzle 6 has a relatively small inner diameter, foreign substances mixed in the fluid may be clogged. However, when cleaning the nozzle 6 in the conventional example, for example, a suction pipe and a discharge pipe (both not shown) are used. It was necessary to disassemble the pump device by disconnecting the casing 1 from the casing cover after removing the connection with the above), or to install a strainer on the upstream side of the nozzle 6.

[0004]

[Problems to be solved by the device]

 As described above, disassembling the pump device in order to remove the foreign matter requires a lot of work, and the operation of the pump must be stopped for a long time. Moreover, if a strainer is permanently installed to prevent such problems, the manufacturing cost will be higher.

The present invention has been made to solve the above-mentioned problems, and it is possible to easily remove foreign matter from the nozzle without disassembling the pump device, and the increase cost for that is very small. It is an object of the present invention to provide a combined turbine / jet pump device.

[0006]

[Means for Solving the Problems]

 The present invention is a pump device having a nozzle for a jet pump mounted in a casing of a turbine pump, characterized in that it is provided with an opening / closing opening provided in the casing facing the nozzle. is there.

[0007]

[Action]

 In the above structure, foreign matter in the nozzle can be removed by opening the opening provided in the casing, and operation of the device can be performed by closing it.

[0008]

【Example】

 The present invention will be described below with reference to an embodiment shown in FIGS. 1 and 2, a turbine pump casing 1 is provided with a fluid suction port 2 and a fluid discharge port 3. An impeller 5 for a turbine pump, which is rotationally driven by an electric motor 4, and a nozzle 6 and a diffuser 7 for a jet pump are concentrically provided in the casing 1. A guide vane 8 is provided between the diffuser 7 and the impeller 5.

In addition, an opening 9 is formed in the casing 1 so as to face the inlet of the nozzle 6, and a lid 10 for opening and closing the opening 9 is detachably attached via bolts or the like. Installed. In the figure, 11 is a drainage port and 12 is a liquid injection port.

In the above embodiment, when the impeller 5 is rotationally driven, the fluid sucked into the impeller 5 from the suction port 2 through the diffuser 7 is discharged into the casing 1 through the guide vanes 8. . Most of it is discharged to the outside through the discharge port 3, but the remaining part is guided to the diffuser 7 again after passing through the nozzle 6, and is pressurized together with the fluid from the suction port 2 and flows into the impeller 5.

When the nozzle 6 is clogged with foreign matter, the pump 10 is once stopped, the lid 10 is removed, the foreign matter clogged in the nozzle 6 is taken out from the opened opening 9, and the lid 10 is attached. The operation of the pump may be restarted after the opening 9 is closed.

Therefore, the foreign matter clogged in the nozzle 6 can be easily and easily removed, and since the pump device does not need to be disassembled, the operation can be stopped in a short time. Moreover, the additional cost for providing the opening 9 and the lid 10 is small. The present invention is not limited to the above-mentioned embodiments, but various modifications and applications are possible within the scope of the gist of the present invention.

[0013]

[Effect of device]

 As described above, according to the present invention, it is possible to easily remove foreign matters in the nozzle without disassembling the pump device, and to provide a combined turbine / jet pump device with a small increase in cost. can do.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cutaway front view of the embodiment.

FIG. 3 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

1 ... Casing, 5 ... Impeller, 6 ... Nozzle, 7 ... Diffuser, 8 ... Guide vane, 9 ... Opening part, 10 ... Lid body.

Claims (1)

[Scope of utility model registration request] 1. A turbine apparatus having a jet pump nozzle mounted in a casing of a turbine pump, the turbine apparatus comprising an opening / closing opening provided in the casing facing the nozzle. -Jet combination pump device.