Motor terminal box and motor thereof

Abstract

This utility model discloses a motor junction box, including a box body with an inlet hole and an outlet hole. An inlet cable passes through the inlet hole and an outlet cable passes through the outlet hole. A sealing layer formed by high-temperature adhesive is adhered between the outer wall of the inlet cable and the end of the inlet hole facing out of the box body, and between the outer wall of the outlet cable and the end of the outlet hole facing out of the box body. Compared with the prior art, by adhering a sealing layer formed by high-temperature adhesive between the outer wall of the inlet cable and the end of the inlet hole facing out of the box body, and between the outer wall of the outlet cable and the end of the outlet hole facing out of the box body, the sealing performance at the inlet hole and outlet hole is improved, preventing moisture from entering the box body and avoiding cable aging or terminal short circuits that could ultimately lead to motor burnout.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor junction box and its motor. Background Technology

[0002] In the sludge drying process, the main blower is a critical piece of equipment, and the stable operation of its motor directly affects the drying efficiency and system safety. However, under high temperature and humidity conditions, it was found that the motor junction box had insufficient sealing at both the inlet and outlet points, leading to the following problems:

[0003] 1. After long-term operation, condensation intensifies, leading to increased humidity inside the junction box;

[0004] 2. Continuous moisture erosion causes the cable insulation layer to age and become brittle, and may even crack or peel off; after the insulation performance deteriorates, leakage or partial discharge is more likely to occur, which further accelerates the deterioration.

[0005] 3. Humid environments can cause oxidation or electrochemical corrosion of terminals, increasing contact resistance and leading to localized overheating. If insulation failure causes phase-to-phase or phase-to-ground short circuits, the instantaneous high current may burn out the motor windings and damage the equipment.

[0006] In summary, the motor junction box's insufficiency at the inlet and outlet of the wiring led to a chain reaction caused by moisture intrusion (cable aging, terminal short circuit), ultimately resulting in the motor burning out. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a motor junction box and its motor, so as to solve the problem that the motor junction box is not sealed enough at the inlet and outlet of the motor, which leads to the chain reaction caused by water vapor intrusion and ultimately the burnout of the motor.

[0008] To achieve the above objectives, the first aspect of this utility model adopts the following technical solution: a motor junction box, including a box body with an inlet hole and an outlet hole, wherein an inlet cable passing through the inlet hole and an outlet cable passing through the outlet hole are connected inside the box body, and a sealing layer formed by high-temperature adhesive is adhered between the outer wall of the inlet cable and the end of the inlet hole facing out of the box body, and between the outer wall of the outlet cable and the end of the outlet hole facing out of the box body.

[0009] The second aspect of this utility model adopts the following technical solution: a motor, including a motor junction box as described in the first aspect of this utility model.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This motor junction box improves the sealing performance of the inlet and outlet holes by adhering a sealing layer formed by high-temperature adhesive between the outer wall of the inlet cable and the end of the inlet hole facing out of the box, as well as between the outer wall of the outlet cable and the end of the outlet hole facing out of the box. This prevents moisture from entering the box and avoids cable aging or terminal short circuits that could ultimately burn out the motor. Attached Figure Description

[0012] Figure 1 This is a partial structural diagram of a motor junction box according to one embodiment of the present invention. Figure 1 ;

[0013] Figure 2 This is a partial structural diagram of a motor junction box according to one embodiment of the present invention. Figure 2 ;

[0014] Figure 3 for Figure 2 A partial sectional view along line AA;

[0015] Figure 4 for Figure 1 A schematic diagram of the structure of the middle sealing sleeve.

[0016] The reference numerals in the accompanying drawings include: box body 1, mounting box 11, box cover 12, elastic sealing ring 13, locking component 14, wire inlet hole 2, sealing layer 3, sealing sleeve 4, sealing sleeve body 41, sleeve section 411, limit ring 412, elastic adjusting ring 42, elastic adjusting block 43, anti-detachment component 5, limit block 51, and limit bolt 52. Detailed Implementation

[0017] The present invention will be further described in detail below through specific embodiments:

[0018] like Figure 1 , Figure 2 as well as Figure 3 As shown, this utility model embodiment proposes a motor junction box, including a box body 1 with an inlet hole 2 and an outlet hole. An inlet cable passing through the inlet hole 2 and an outlet cable passing through the outlet hole are connected inside the box body 1. A sealing layer 3 formed by high-temperature adhesive is adhered between the outer wall of the inlet cable and the end of the inlet hole 2 facing out of the box body 1, and between the outer wall of the outlet cable and the end of the outlet hole facing out of the box body 1.

[0019] This motor junction box improves the sealing performance of the inlet hole 2 and outlet hole by adhering a sealing layer 3 formed of high-temperature adhesive between the outer wall of the inlet cable and the end of the inlet hole 2 facing the outside of the box body 1, and between the outer wall of the outlet cable and the end of the outlet hole facing the outside of the box body 1. This prevents moisture from entering the box body 1 and avoids cable aging or terminal short circuits that could ultimately lead to motor burnout.

[0020] In this embodiment, the high-temperature adhesive can be HT-880 high-temperature nesting sealant.

[0021] To improve the assembly stability and sealing of incoming or outgoing cables, such as Figure 1 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the present utility model, in the motor junction box, a sealing sleeve 4 is fitted inside both the inlet hole 2 and the outlet hole, the inlet cable or the outlet cable passes through the sealing sleeve 4 and the sealing layer 3 is adhered between one end of the sealing sleeve 4 and the outer wall of the inlet cable or the outer wall of the outlet cable.

[0022] During assembly: sealing sleeves 4 are installed in both the inlet hole 2 and the outlet hole. Then, the inlet cable and the outlet cable are passed through the corresponding sealing sleeves 4, and the inlet cable and the outlet cable can be connected to the wiring terminals inside the box 1. Then, high-temperature adhesive is applied to the outside of the box 1 between the sealing sleeve 4 and the inlet cable or the outlet cable. After the high-temperature adhesive solidifies, a sealing layer 3 is formed between the sealing sleeve 4 and the inlet cable or the outlet cable, which improves the sealing performance of the inlet hole 2 and the outlet hole.

[0023] Based on the above solution:

[0024] The sealing sleeve 4 includes a sealing sleeve 4 body and an elastic adjustment ring 42. The sealing sleeve 4 body is fitted inside the inlet hole 2 or the outlet hole. The elastic adjustment ring 42 is integrally formed inside the sealing sleeve 4 body and a plurality of elastic adjustment blocks 43 are evenly distributed around the inner side of the elastic adjustment ring 42. The sealing layer 3 is adhered between the outer wall of the inlet cable or the outer wall of the outlet cable and the elastic adjustment blocks 43 and the elastic adjustment ring 42.

[0025] In this embodiment, the sealing sleeve 4 can be made of an elastic polymer material, such as rubber; the elastic adjusting ring 42 is an annular block, and the elastic adjusting block 43 is an arc-shaped block; the elastic adjusting ring 42 provides connection positions for a plurality of elastic adjusting blocks 43.

[0026] When the cable is installed, it passes through several elastic adjustment blocks 43. The elastic adjustment blocks 43 undergo elastic deformation, which has a certain clamping effect on the cable. At the same time, it can also meet the needs of cables of different thicknesses to pass through several elastic adjustment blocks 43 to connect with the wiring terminals in the box 1 within a certain range.

[0027] The number of the elastic adjustment blocks 43 is shown as three.

[0028] It should be noted that after the cable is connected, high-temperature adhesive is applied to the outer wall of the cable from the outside of the box 1 and extends to the elastic adjustment ring 42 so that the high-temperature adhesive covers the elastic adjustment block 43 to ensure good sealing.

[0029] Furthermore, the sealing sleeve 4 body includes a sleeve section 411 and a limiting ring 412. The sleeve section 411 is attached to the inlet hole 2 or the outlet hole, and the elastic adjusting ring 42 is integrally formed on the inner side of the sleeve section 411. There are two limiting rings 412, which are connected to both ends of the sleeve section 411 and extend outward from the sleeve section 411. The two limiting rings 412 are attached to the inner wall of the box body 1 and the outer wall of the box body 1 respectively.

[0030] Here, the sealing sleeve 4 body is composed of a sleeve section 411 and two limiting rings 412. The sleeve section 411 is attached to the inlet hole 2 or the outlet hole, and the two limiting rings 412 are attached to the inner wall of the box body 1 and the outer wall of the box body 1 respectively to limit the position, so that the sealing sleeve 4 has sufficient sealing performance and stability after being installed in the inlet hole 2 or the outlet hole.

[0031] like Figure 1 , Figure 2 as well as Figure 3 As shown, according to another embodiment of the present invention, a motor junction box, wherein the box body 1 includes a mounting box 11, a box cover 12, an elastic sealing ring 13, and a locking member 14, wherein one end of the mounting box 11 is open and a first sealing groove is formed at its open end along its circumferential direction, and both the inlet hole 2 and the outlet hole are opened on the mounting box 11; a second sealing groove is formed on the inner side edge of the box cover 12 along its circumferential direction; the elastic sealing ring 13 fills the first sealing groove and the second sealing groove; and there are multiple locking members 14 connected between the box cover 12 and the mounting box 11.

[0032] In this embodiment, both the mounting box 11 and the cover 12 are square. After the cable connection is completed, the elastic sealing ring 13 is placed in the first sealing groove, and then the cover 12 is fastened to the open end of the mounting box 11. The elastic sealing ring 13 is partially embedded in the second sealing groove. Then, multiple locking parts 14 are used to connect and fix the cover 12 and the mounting box 11. The elastic sealing ring 13 cooperates with the first sealing groove and the second sealing groove to improve the sealing performance at the connection between the cover 12 and the mounting box 11.

[0033] The locking element 14 is four in number and distributed at the four corners of the cover 12. The locking element 14 can be a matching bolt or nut.

[0034] like Figure 1As shown, according to another embodiment of the present invention, a motor junction box is provided, wherein the box body 1 is provided with an anti-detachment component 5 that cooperates with the incoming or outgoing cable. The anti-detachment component 5 improves the stability of the incoming or outgoing cable after connection and prevents the incoming or outgoing cable from falling off the terminal block during dragging.

[0035] Based on the above solution:

[0036] The anti-detachment component 5 includes a limiting block 51 and a limiting bolt 52. The limiting block 51 is fixedly connected to the outer wall of the housing 1 and has a through hole for the incoming or outgoing cable to pass through. One end of the limiting bolt 52 passes through the side wall of the limiting block 51 and extends into the through hole to abut against the incoming or outgoing cable. The limiting bolt 52 is threadedly connected to the limiting block 51.

[0037] After passing the cable through the through hole, rotate the limiting bolt 52 to make one end of it abut against the cable, thereby locking the cable and preventing it from coming off.

[0038] In this embodiment, the central axis of the limiting bolt 52 is arranged perpendicular to the central axis of the through hole; when the limiting bolt 52 abuts against the cable, it has a good limiting ability for the cable.

[0039] According to another embodiment of the present invention, the motor includes a motor junction box as described in any of the above embodiments, so that the motor has the advantages of the above-described motor junction box.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electric machine terminal box comprising a box body having a wire inlet hole and a wire outlet hole on the box body, and a wire inlet cable connected in the box body from the wire inlet hole and a wire outlet cable connected in the box body from the wire outlet hole, characterized in that, A sealing layer formed by high-temperature adhesive is adhered between the outer wall of the incoming cable and the end of the incoming cable facing out of the box, and between the outer wall of the outgoing cable and the end of the outgoing cable facing out of the box.

2. The motor junction box according to claim 1, characterized in that, Both the inlet and outlet holes are fitted with sealing sleeves. The inlet or outlet cable passes through the sealing sleeves, and the sealing layer adheres to one end of the sealing sleeve between the outer wall of the inlet or outlet cable.

3. A motor junction box according to claim 2, characterized in that, The sealing sleeve includes: A sealing sleeve body, wherein the sealing sleeve body is fitted into the inlet hole or outlet hole; The elastic adjustment ring is integrally formed inside the sealing sleeve body, and several elastic adjustment blocks are evenly distributed around the inner circumference of the elastic adjustment ring. The sealing layer is adhered between the outer wall of the incoming cable or the outer wall of the outgoing cable and the elastic adjustment blocks and the elastic adjustment ring.

4. A motor junction box according to claim 3, characterized in that, The sealing sleeve body includes: A sleeve section, wherein the sleeve section is attached to the inlet or outlet hole and the elastic adjusting ring is integrally formed on the inner side of the sleeve section; The limiting rings are two in number and are connected one-to-one to both ends of the sleeve section and extend outward from the sleeve section. The two limiting rings are fitted one-to-one with the inner wall of the box and the outer wall of the box.

5. A motor junction box according to claim 1, characterized in that, The housing includes: The mounting box has an opening at one end and a first sealing groove is formed at the opening end along its circumferential direction. The inlet hole and outlet hole are both opened on the mounting box. The lid has a second sealing groove formed along its circumferential direction on the inner side edge. An elastic sealing ring, wherein the elastic sealing ring is filled in the first sealing groove and the second sealing groove; A locking element, wherein there are multiple locking elements and they are connected between the cover and the mounting box.

6. A motor junction box according to claim 1, characterized in that, The box is equipped with an anti-detachment component that works with the incoming or outgoing cable.

7. A motor junction box according to claim 6, characterized in that, The anti-detachment component includes: A limiting block, which is fixedly connected to the outer wall of the box and has a through hole for the incoming or outgoing cable to pass through. A limiting bolt, one end of which passes through the side wall of the limiting block and extends into the through hole to abut against the incoming or outgoing cable, and the limiting bolt is threadedly connected to the limiting block.

8. An electric motor, characterized in that, Includes a motor junction box as described in any one of claims 1-7.

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