Upper water and wire outlet structure of built-in submerged motor pump

A submersible electric pump, built-in technology, applied in the field of general mechanical product manufacturing, can solve problems such as unusable, large radial size of the unit, inconvenient installation and use, etc.

Inactive Publication Date: 2010-06-09

JIANGSU UNIV

2 Cites 9 Cited by

AI-Extracted Technical Summary

Problems solved by technology

figure 2 It is the accompanying drawing of the 200620084577.6 patent specification. Its main defect is that it is difficult to install a junction box that can change the wiring mode of the motor coil. If the user's power supply voltage changes, it cannot be used.

At present, there are also junction boxes on the top of the unit, and the water outlet is on the s...

Abstract

The invention provides an upper water and wire outlet structure of a built-in submerged motor pump. In the structure, a wiring box is arranged on the upper part of a machine set to change the wiring model of a motor coil, a cable of the machine set is led out from the upper part of the wiring box, the water outlet pipe and upper cover of the machine set are made an integrated part, the lower part of the water outlet pipe is communicated with a cooling cavity between an outer sleeve of the machine set and a shell of a motor, the flange on the upper part of the water outlet pipe deflects toward the axis of the machine set, a round hole is formed in the center of the upper cover of the machine set, the inside diameter of the round hole and the outside diameter of the wiring box are in radial clearance fit, and an O-shaped sealing ring is used for sealing. The structure has the advantages that: the wiring model of the motor coil can be conveniently changed on a user site to make the built-in submerged motor pump adapts to a power supply voltage of 660 to 1,140 volts; and the radial size of the machine set is small, so the machine site can be arranged and used in a narrow mine conveniently.

Application Domain

Pump installationsNon-positive displacement fluid engines

Technology Topic

Breakout boxVolt +3

Image

Examples

Experimental program(1)

Example Embodiment

[0015] Figure 4 The embodiment shown is an explosion-proof built-in submersible electric pump for mining, Figure 5 It is a partial view of the innovative part of this embodiment. in Figure 4 with Figure 5 In the middle, the junction box 12 is located on the upper part of the unit, and there are 6 terminals 13 inside, which are used to change the wiring mode of the motor coil 7. The lower part of the junction box and the motor housing 16 have a matching stop 6, which is connected to the axis of the unit. Line 8 is concentric. The upper part of the junction box and the junction box cover 2 have a mating stop 5, which is concentric with the axis of the unit. The cable line 1 of the unit is led out from the upper part of the junction box cover, and the outlet pipe 10 of the unit is connected to the unit The cover 3 is an integral part. The lower part of the outlet pipe communicates with the cooling cavity 14 between the unit jacket 15 and the motor housing 16. The upper flange 9 of the outlet pipe is offset to the axis of the unit. The projection is completely in the axial projection of the upper cover of the unit, and there is a round hole 4 in the middle of the upper cover of the unit. The inner diameter of the round hole 4 and the outer diameter of the junction box are radial clearance fit, and the O-ring 11 is used for sealing.

[0016] When the power supply voltage at the user site changes, just open the junction box cover 2 and change the connection mode of the 6 terminals 13 to adapt to use. The cable 1 of the unit is led out from the upper part of the junction box cover, which is also convenient for the power supply in the mine. Cable routing. Since the upper flange 9 of the outlet pipe is generally much smaller than the upper cover of the unit, the offset upper flange of the outlet pipe will not affect the opening and closing of the junction box cover, and because the axial projection of the upper flange of the outlet pipe is completely In the axial projection of the upper cover of the unit, the radial size of the unit is relatively small, which is convenient for installation and use in narrow mines.

[0017] When the unit is installed and used in the mine, the upper flange 9 of the outlet pipe is connected with the outlet pipe. Figure 4 It can be seen that even if this embodiment is connected to the water outlet pipe, it does not affect the opening of the junction box cover 2 to change the wiring mode.

PUM

Description & Claims & Application Information

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