JPH0647692U - Submersible motor pump - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a submersible motor pump that is lightweight and has good installation workability. [Structure] A pump (11) installed in a water absorption tank (T) is moved up and down by a lifting means via a guide member to connect and disconnect the discharge port of the pump body to the bend. In the submersible motor pump, the pump body (14) provided with a mixed flow or axial flow impeller (19).
And a submersible motor (23) mounted on the pump body at a right angle to the axis of the rotary shaft (18) of the impeller, and the rotary shaft and the motor shaft (24) are provided with a bevel gear (22).
Submersible motor pump characterized by being connected by a, 22b).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a submersible motor pump used for draining internal water or draining sewer rainwater.

[0002]

[Prior art]

 Conventionally, as the submersible motor pump, as shown in FIG. 2, a column pipe 2 having a discharge port 3 and an opening 4 above is installed in a water absorption tank 1, and an impeller 5, 5 is installed in the column pipe 2. A submersible motor pump P in which the submersible motor 6 and a part of the casing 7 are integrated is detachably attached to the tip end of the column pipe 2 from the opening 4 of the column pipe 2, and an actual subassembly 63- As disclosed in Japanese Patent No. 162996, a pump main body is moved up and down by a lifting device via a guide device to a bend of a pumping pipe installed in a water absorption tank to connect and disconnect the discharge port of the pump main body to the bend. A submersible motor pump of this type has been put into practical use.

[0003]

[Problems to be solved by the device]

 By the way, the former one, which installs a submersible motor pump via a column pipe, has the advantage of having a smaller number of parts and lighter weight than the latter one, which is installed via a bend, while the column Not only it is necessary to attach the pipe lid 8 to the opening 4 of the column pipe 2 in an airtight manner, but it is also troublesome to attach the pipe lid 8 to the column lid 8 of the underwater cable 9, which poses a problem of poor workability in installing the pump. . Therefore, the present inventor has conducted various studies to reduce the weight of the latter one, and the latter one results from the fact that the pump main body is a centrifugal centrifugal pump and uses a heavy-weight spiral casing. I found out that it is doing. Therefore, according to the present invention, in the case where the pump is installed via a bend, the pump type is changed, and the pump body is attached to the submersible motor and the connecting method between the rotary shaft and the motor shaft is devised. It is an object of the present invention to provide a submersible motor pump that is easy to install, compact, and lightweight.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention moves a pump pipe bend installed in a water absorption tank up and down by a lifting means through a guide member to connect and disconnect the discharge port of the pump body to the bend. In the submersible motor pump as described above, a pump main body that is equipped with a mixed flow or axial flow impeller and is installed in a horizontal state, and this pump main body is placed at a right angle to and above the rotation axis of the blade wheel. A submersible motor to be attached, and the rotating shaft and the submersible motor shaft are connected by a bevel gear.

[0005]

【Example】

 Next, an embodiment of the present invention will be described with reference to FIG. In the figure, 10 is a bend installed in the bottom portion Ta of the water absorption tank T, and a pumping pipe 11 is connected to this bend 10. Further, near the suction side of the bend 10, a guide pipe 12 having an upper end fixed to the upper part of the water absorption tank T is provided.

On the other hand, the pump body 14 of the submersible motor pump 13 described below is provided with a guide piece 15 guided by the guide pipe 12, and the submersible motor pump 13 includes a guide piece 15 and a chain (not shown) or the like. It can be lifted and lowered by the suspending means, and the discharge port 16a of the pump body 14 and the suction port 10a of the bend 10 can be brought into contact with and separated from each other. The contact and separation between the bend 10 and the pump body 14 are not limited to those shown in the figures, and a guide wire may be used instead of the guide pipe 12 as shown in Japanese Utility Model Application Laid-Open No. 63-162996.

The submersible motor pump 13 includes a pump body 14 and a submersible motor 23. The pump body 14 has a hollow casing 17 provided inside a casing 16 and both ends thereof are supported by the casing 17. The rotary shaft 18 having a mixed flow or axial flow wheel wheel 19 at its protruding end, and the diffuser 20 provided in the flow path formed between the hollow casing 17 and the casing 16 are, as described above, When the discharge port 16a of the pump body 14 is connected to the suction port 10a of the bend 10, the pump body 14 is installed horizontally.

The impeller 19 is attached to a rotary shaft 18 supported by the hollow casing 17, and a bevel gear 22 a is attached to the rotary shaft 18. Further, a connecting shaft 21 is provided between the casing 16 and the hollow casing 17 at a right angle to the axis of the rotating shaft 18, and the connecting shaft 21 has a bevel gear 22b meshing with the bevel gear 22a. Is provided.

On the other hand, the submersible motor 23 is mounted on the casing 16 of the pump body 14, and at the same time as the mounting, the motor shaft 24 is rotated integrally with the connecting shaft 21 by means such as a key. Is connected to. In addition, 25 is an underwater cable and 26 is a shaft sealing device. Since the method of using the submersible motor pump 13 is the same as the conventional one, the description thereof will be omitted.

[0010]

[Effect of device]

 As is clear from the above description, the present invention is a submersible motor pump of the type in which the pump body is connected to and separated from the bend, which is advantageous for installation, etc., and its impeller is a mixed flow or axial flow. In addition, it is lightweight because it does not require a large-sized spiral casing. Moreover, since the motor shaft and the rotary shaft are connected at a right angle, the pump main body has a compact structure, and the problem of the conventional submersible motor pump that is connected to and separated from the bend can be solved.

[Brief description of drawings]

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

FIG. 2 is a sectional view showing an example of a conventional submersible motor pump.

[Explanation of symbols]

10 ... Bend, 11 ... Pumping pipe, 12 ... Guide pipe, 1
3 ... Submersible motor pump, 14 ... Pump body, 15 ... Guide piece, 16 ... Casing, 17 ... Hollow casing, 18
... rotary shaft, 19 ... mixed flow or axial flow impeller, 21 ... connecting shaft, 22a, 22b ... bevel gear, 23 ... submersible motor, 24
… Motor shaft, T… Water absorption tank.

Claims (1)

[Scope of utility model registration request] 1. A bend of a pumping pipe installed in a water absorption tank,
A submersible motor pump that is moved up and down by a lifting means via a guide member to connect and disconnect the discharge port of the pump main body to the bend, and is equipped with a diagonal flow or axial flow impeller and is installed horizontally. The main body and this pump main body are perpendicular to the axis of rotation of the impeller, and
An underwater motor pump comprising an underwater motor mounted on the upper side, wherein the rotating shaft and the underwater motor shaft are connected by a bevel gear.