Submersible sewage pump motor junction box cover structure

Abstract

The utility model provides a submersible sewage pump motor junction box cover structure, which is characterized in that the periphery of a box cover body is in an inclined plane shape, a cable inlet hole is formed in one side of the box cover body along the axial direction in a penetrating manner, the lower end of the cable inlet hole is of a closing structure, a screw hole is formed in the center of the upper end of the box cover body, and a mounting hole is formed in the center of the lower end of the box cover body; the screw hole is communicated with the mounting hole through a middle hole, a screw is mounted in the screw hole, an upper bearing seat is mounted in the mounting hole, the screw penetrates through the middle hole to be in threaded connection with the upper bearing seat, and a connecting groove is formed in the outer edge of the lower end of the box cover body in the circumferential direction and matched with a stator; the cable inlet hole sinks into the lower end of the junction box cover, the side face of the junction box cover is inclined, the structure is three-dimensional and attractive, and occupied space is saved. The junction box cover is fixedly connected with the bearing seat on the stator through an independent screw, and the junction box cover is independently provided with a screw hole for fixing the handle, so that the hidden danger of insufficient sealing force between the junction box cover and the stator caused by insufficient fastening force when the screw is shared is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage pumps, in particular to a submersible sewage pump motor junction box cover structure. Background Art

[0002] The specific structure of the existing submersible sewage pump motor junction box cover can be found in Figure 1 and Figure 2 , the junction box cover is fixed to the surrounding parts. Figure 3 , the accompanying drawings are denoted as follows:

[0003] 1 air pressure hole, 2 cable entry hole, 3 bearing position, 4 screw hole, 5 bracket, 6 grounding hole, 7 nameplate boss,

[0004] 8 handle, 9 junction box cover, 10 stator;

[0005] In the prior art, the main body of the junction box cover 9 is in a flat pancake shape, the outer circle of the junction box cover 9 is cast with a bracket 5, four screw holes 4 are drilled on the bracket 5, the four screw holes 4 are used to connect with the stator, two of which are symmetrically screwed holes for assembling handles 8, the junction box cover 9 is provided with a bearing position 3 for assembling bearings, the junction box cover 9 is provided with an air pressure hole 1 for the air tightness test of the whole machine, the grounding hole 6 is used for grounding the ground wire, the junction box cover 9 is cast with a nameplate boss 7 to provide a nameplate fixing position, and the junction box cover 9 is provided with a cable entry hole 2 for sealing the cable entry.

[0006] The above structure has the following disadvantages: the connection seat structure is not aesthetically pleasing, and the positions of the bracket 5 and the cable entry hole 2 are too protruding; the handle 8, the junction box cover 9 and the stator 10 are connected by two screws. When the handle 8 is subjected to force, if the tightening force is insufficient, the sealing strength between the junction box cover 9 and the stator 10 will be insufficient. Summary of the invention

[0007] The utility model aims to provide a submersible sewage pump motor junction box cover structure.

[0008] In order to achieve the above purpose, the technical solution of the utility model is:

[0009] A submersible sewage pump motor terminal box cover structure, characterized in that it includes a cover body, the outer periphery of the cover body is in the shape of an inclined surface, the outer diameter of the cover body gradually increases from top to bottom, a cable entry hole is axially penetrated through one side of the cover body, the lower end of the cable entry hole is a closing structure with a reduced inner diameter, a screw hole is axially provided in the center of the upper end of the cover body, a mounting hole is axially provided in the center of the lower end of the cover body, the screw hole and the mounting hole are connected through an intermediate hole, the inner diameter of the intermediate hole is smaller than the inner diameter of the mounting hole, a screw is installed in the screw hole, an upper bearing seat is installed in the mounting hole, the screw passes through the intermediate hole axially and is threadedly connected to the inner wall of the upper bearing seat, and a connecting groove is circumferentially provided on the outer edge of the lower end of the cover body, and the connecting groove cooperates with the stator for positioning.

[0010] Furthermore, a nameplate boss is protruding from the upper end of the box cover body, and the nameplate boss is arranged around the outer edge of the screw hole.

[0011] Furthermore, the box cover body is provided with an air pressure hole, the air pressure hole is located on the outside of the nameplate boss, and the air pressure hole is located on the other side away from the cable inlet hole.

[0012] Furthermore, it also includes a handle, and two thread holes are symmetrically provided on the outer side of the upper end of the box cover body along the radial direction, and the two ends of the handle are fixedly connected to the thread holes.

[0013] The utility model has a cable entry hole sunk into the lower end of the junction box cover, the side surface of the junction box cover is inclined, the outer circle of the junction box cover and the outer circle of the stator are not provided with a bridge, the structure is more three-dimensional and beautiful, and the occupied space is saved; the junction box cover is fixedly connected to the bearing seat on the stator by an independent screw, and the junction box cover is separately provided with a thread hole for fixing the handle, so as to avoid the hidden danger of insufficient sealing force between the junction box cover and the stator caused by insufficient fastening force when the screws are shared. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the side structure of a junction box cover in the prior art;

[0015] Figure 2 It is a front structural schematic diagram of a junction box cover in the prior art;

[0016] Figure 3 It is a schematic diagram of the combined structure of the peripheral parts of the junction box cover in the prior art;

[0017] Figure 4 It is a side structural schematic diagram of the utility model;

[0018] Figure 5 It is a front structural schematic diagram of the utility model;

[0019] Figure 6 It is a schematic diagram of the combined structure of the utility model and surrounding parts.

[0020] Reference numerals:

[0021] 11 thread hole, 12 nameplate boss, 13 screw hole, 14 cable entry hole, 15 mounting hole

[0022] 16 Motor rotation direction arrow, 17 Air pressure hole, 18 Handle, 19 Box cover body, 20 Stator,

[0023] 21 Upper bearing seat. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model discloses a submersible sewage pump motor junction box cover structure, such as Figure 4 and Figure 5 As shown, it includes a box cover body 19, the outer circumference of the box cover body 19 is in a slope shape, the outer diameter of the box cover body 19 gradually increases from top to bottom, one side of the box cover body 19 is axially penetrated by a cable entry hole 14, the lower end of the cable entry hole 14 is a closing structure with a reduced inner diameter, and the upper end of the box cover body 19 is cast with a motor rotation direction arrow 16 to remind customers of the direction of the submersible electric pump.

[0026] A screw hole 13 is axially provided at the center of the upper end of the box cover body 19, and a mounting hole 15 is axially provided at the center of the lower end of the box cover body 19. The screw hole 13 is connected to the mounting hole 15 through an intermediate hole. The inner diameter of the intermediate hole is smaller than the inner diameter of the mounting hole 15. A screw is installed in the screw hole 13. Figure 6 As shown, the upper bearing seat 21 is installed in the mounting hole 15, and the screw passes through the middle hole axially and is threadedly connected to the inner wall of the upper bearing seat 21. The outer edge of the lower end of the box cover body 19 is provided with a connecting groove along the circumferential direction, and the connecting groove cooperates with the stator 20 for positioning.

[0027] The upper end of the box cover body 19 is protruding with a nameplate boss 12, which is arranged around the outer edge of the screw hole 13. The box cover body 19 is provided with an air pressure hole 17, which is located on the outside of the nameplate boss 12 and on the other side away from the cable entry hole 14.

[0028] The junction box cover structure of the present invention also includes a handle 18. Two thread holes 11 are symmetrically provided radially on the outer side of the upper end of the cover body 19. Both ends of the handle 18 are fixedly connected to the thread holes 11. Preferably, both ends of the handle 18 are pressed into the thread holes 11 by screws.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A submersible sewage pump motor junction box cover structure, characterized in that: It includes a box cover body, the outer circumference of the box cover body is in a slope shape, the outer diameter of the box cover body gradually increases from top to bottom, a cable entry hole is axially penetrated on one side of the box cover body, the lower end of the cable entry hole is a closing structure with a reduced inner diameter, a screw hole is axially provided in the center of the upper end of the box cover body, a mounting hole is axially provided in the center of the lower end of the box cover body, the screw hole and the mounting hole are connected through an intermediate hole, the inner diameter of the intermediate hole is smaller than the inner diameter of the mounting hole, a screw is installed in the screw hole, an upper bearing seat is installed in the mounting hole, the screw passes through the intermediate hole axially and is threadedly connected to the inner wall of the upper bearing seat, and a connecting groove is circumferentially provided on the outer edge of the lower end of the box cover body, and the connecting groove cooperates with the stator for positioning.

2. The submersible sewage pump motor junction box cover structure according to claim 1, characterized in that: A nameplate boss is protruding from the upper end of the box cover body, and the nameplate boss is arranged around the outer edge of the screw hole.

3. The submersible sewage pump motor junction box cover structure according to claim 2 is characterized in that: The box cover body is provided with an air pressure hole, the air pressure hole is located on the outside of the nameplate boss, and the air pressure hole is located on the other side away from the cable inlet hole.

4. The submersible sewage pump motor junction box cover structure according to claim 1, characterized in that: It also includes a handle, and two thread holes are symmetrically arranged radially on the outer side of the upper end of the box cover body, and the two ends of the handle are fixedly connected to the thread holes.

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