A junction box for a shielded pump motor

Abstract

The utility model belongs to the technical field of shielded pumps, and relates to a junction box for a shielded pump motor, including a box body and a box cover, wherein a wiring assembly and a pin assembly are arranged in the box body, wherein the wiring assembly includes a phase wiring terminal, a control wiring terminal and a grounding terminal, wherein the pin assembly is electrically connected to a power distribution assembly in the shielded pump, wherein the terminals of the pin assembly are electrically connected to the phase wiring terminal and the control wiring terminal, wherein the grounding terminal is electrically connected to a grounding bolt, wherein an outer shell with an upper opening is arranged between the wiring assembly and the pin assembly, wherein the box cover is arranged to cover the upper opening of the outer shell after the box body is covered, wherein a status indicator light is arranged in the outer shell, wherein the status indicator light is electrically connected to the phase wiring terminal through the indicator light terminal. The junction box for the shielded pump motor provided by the utility model integrates the status indicator light into the junction box of the motor, and has the advantages of simple structure, concise layout, and small space occupation.

Description

Technical Field

[0001] The utility model belongs to the technical field of shielded pumps and relates to a junction box of a shielded pump motor. Background Art

[0002] The canned pump connects the pump and the motor together. The rotor of the motor and the impeller of the pump are fixed on the same shaft. The rotor and the stator of the motor are separated by a shielding sleeve. The rotor runs in the medium being transported, and its power is transmitted to the rotor through the stator magnetic field. In order to better monitor the working status of the canned pump, a water pump indicator light is generally set on the canned pump, and its operating status is indicated by the color and color components of the indicator light. The indicator light requires a separate display area and wiring components, and its layout is cumbersome and occupies a large space. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a junction box for a shielded pump motor, in which a status indicator light is integrated into the junction box of the motor, and has the advantages of simple structure, concise layout and small space occupation.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0005] A junction box for a canned motor pump comprises a box body and a box cover, wherein a junction assembly and a pin assembly are arranged in the box body, wherein the junction assembly comprises a phase wiring terminal, a control wiring terminal and a grounding terminal, wherein the pin assembly is electrically connected to a power distribution assembly in the canned motor pump, wherein the terminals of the pin assembly are electrically connected to the phase wiring terminal and the control wiring terminal, wherein the grounding terminal is electrically connected to a grounding bolt, wherein an outer shell with an upper opening is arranged between the junction assembly and the pin assembly, wherein the box cover is arranged to cover the upper opening of the outer shell after the box body is covered, wherein a status indicator light is arranged in the outer shell, and wherein the status indicator light is electrically connected to the phase wiring terminal through the indicator light terminal.

[0006] In the above-mentioned junction box for a canned pump motor, a pair of mounting grooves are provided on the side of the shell, light guides corresponding to the status indicator lights are provided in the mounting grooves, the light guides extend to the visible area on the side of the box cover, and a U-shaped plate for installing the status indicator lights is provided in the shell. Further, the visible area includes a through hole structure provided on the side of the box cover, or a transparent window provided on the side of the box cover.

[0007] In the above-mentioned terminal box of a shielded pump motor, the pin assembly and the shell are molded on a mounting plate, the wiring assembly is adjacently arranged on one side of the mounting plate, the rear end of the mounting plate and the wiring assembly are respectively clamped and fixed to the base plate, each terminal is electrically connected through a wiring connection piece, and a wiring connection groove for accommodating the wiring connection piece is formed at the bottom of the mounting plate.

[0008] In the above-mentioned junction box of a canned motor pump, the mounting plate and the wiring assembly are fastened to the box body by fasteners, the grounding terminal is connected to the grounding bolt by a grounding connecting piece, and the bottom of the box body is provided with a grounding connection groove for accommodating the grounding connecting piece. Further, the fastener is a bolt, the mounting plate and the wiring assembly are provided with mounting ears, the box body is provided with an internal threaded column, and the bolt passes through the through hole on the mounting ear and is screwed and fixed to the internal threaded column.

[0009] In the above-mentioned junction box of a shielded pump motor, a phase line terminal mounting seat for fixing the phase line terminal and a control line terminal mounting seat for fixing the control line terminal are respectively provided on the base plate; a grounding terminal mounting groove is provided on the base plate, and the grounding terminal passes downward through the grounding terminal mounting groove and is connected to the grounding connecting plate, and a limit block extending downward and abutting against the side of the grounding terminal is provided on one side of the grounding terminal mounting groove.

[0010] In the above-mentioned junction box of a canned motor pump, a grounding terminal mounting seat is arranged in the box body, and the grounding terminal mounting seat passes upward through the grounding terminal mounting slot and fixes the grounding terminal.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model provides a junction box for a shielded pump motor, in which a shell for installing an indicator light is directly formed in the junction box, and the original circuit of the junction box is used for layout, thereby greatly simplifying the structure, making the occupied space smaller and the layout more concise.

[0013] 2. The utility model further optimizes the installation structure of the junction box, forms the shell of the pin assembly and the status indicator light on the mounting plate, and then snaps the mounting plate and the junction assembly onto the bottom plate to form a pre-installed structure, which is then installed into the box body.

[0014] 3. The utility model further optimizes the installation structure of the wiring terminal, sets the phase wiring terminal mounting seat on the bottom plate, sets the ground terminal mounting seat in the box body, and sets a matching limit block on the bottom plate. In the process of installing each component into the box body, each wiring terminal can be automatically fixed to its corresponding mounting seat, so that each wiring terminal can be fixed more conveniently and stably.

[0015] 4. The utility model further optimizes the layout of the grounding terminal and the grounding connecting piece. It is not necessary to make a groove in the wall of the junction box to lead out the grounding connecting piece. Instead, the grounding terminal and the grounding connecting piece are first led to the bottom of the junction box and then to the outside of the junction box to connect the grounding bolt. Through the above arrangement, the sealing performance of the junction box can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is an exploded view of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the mounting plate of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the bottom plate of the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the box body of the utility model;

[0021] Figure numerals: 1. Box body; 2. Wiring assembly; 3. Pin assembly; 4. Phase line terminal; 5. Control line terminal; 6. Grounding terminal; 7. Housing; 8. Indicator light terminal; 9. Mounting groove; 10. U-shaped plate; 11. Mounting plate; 12. Bottom plate; 13. Wiring connecting piece; 14. Wiring connecting groove; 15. Grounding connecting piece; 16. Grounding connecting groove; 17. Phase line terminal mounting seat; 18. Control line terminal mounting seat; 19. Grounding terminal mounting groove; 20. Limit block; 21. Grounding terminal mounting seat. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings. Figure 1-5 :

[0023] A junction box for a canned motor pump comprises a box body 1 and a box cover (not shown in the accompanying drawings), wherein a junction assembly 2 and a pin assembly 3 are arranged in the box body 1, wherein the junction assembly 2 comprises a phase line terminal 4, a control line terminal 5 and a grounding terminal 6, wherein the pin assembly 3 is electrically connected to a power distribution assembly in the canned motor pump, wherein the terminals of the pin assembly 3 are electrically connected to the phase line terminal 4 and the control line terminal 5, wherein the grounding terminal 6 is electrically connected to a grounding bolt, wherein an outer shell 7 with an upper opening is arranged between the junction assembly 2 and the pin assembly 3, wherein the box cover is arranged to cover the upper opening of the outer shell 7 after the box body 1 is covered, wherein a status indicator light is arranged in the outer shell 7, wherein the status indicator light is electrically connected to the phase line terminal 4 via the indicator light terminal 8.

[0024] Based on the original junction box (including the junction assembly 2 and the pin assembly 3, the electrical connection method of each terminal of the junction assembly 2 and the pin assembly 3 is the same as that in the prior art), this embodiment does not increase the volume of the junction box, but utilizes the vertical space between the junction assembly 2 and the pin assembly 3 to integrate the status indicator light and the installation structure and electrical connection structure of the status indicator light into the junction box, thereby greatly simplifying the structure of the status indicator light, making it occupy less space and having a simpler layout.

[0025] In order to facilitate observation of the status indicator light, a pair of mounting grooves 9 are provided on the side of the housing 7, and light guides corresponding to the status indicator lights are provided in the mounting grooves 9, and the light guides extend to the visible area on the side of the box cover, and a U-shaped plate 10 for mounting the status indicator lights is provided in the housing 7. Further, the visible area includes a through hole structure provided on the side of the box cover, or a transparent window provided on the side of the box cover.

[0026] The utility model further optimizes the installation structure of each component:

[0027] In this embodiment, the pin assembly 3 and the housing 7 are formed on the mounting plate 11, and the wiring assembly 2 is arranged adjacent to one side of the mounting plate 11. The rear end of the mounting plate 11 and the wiring assembly 2 are respectively clamped and fixed to the bottom plate 12, and each wiring terminal is electrically connected through a wiring connecting piece 13. The bottom of the mounting plate 11 forms a wiring connection groove 14 for accommodating the wiring connecting piece 13.

[0028] Further, the mounting plate 11 and the wiring assembly 2 are fastened to the box body 1 through fasteners, the grounding terminal 6 is connected to the grounding bolt through the grounding connecting piece 15, and the bottom of the box body 1 is provided with a grounding connecting groove 16 for accommodating the grounding connecting piece 15. Further, the fastener is a bolt, the mounting plate 11 and the wiring assembly 2 are provided with mounting ears, the box body 1 is provided with an internal threaded column, and the bolt passes through the through hole on the mounting ear and is screwed and fixed with the internal threaded column.

[0029] Through the above installation structure, the wiring assembly 2, the pin assembly 3 and the status indicator light can be combined into a whole by pre-installation, and then installed into the box body 1, thereby simplifying the installation structure and the installation process.

[0030] This embodiment further optimizes the installation structure of each wiring terminal:

[0031] In this embodiment, the base plate 12 is respectively provided with a phase line terminal mounting seat 17 for fixing the phase line terminal 4 and a control line terminal mounting seat 18 for fixing the control line terminal 5; the base plate 12 is provided with a grounding terminal mounting groove 19, and the grounding terminal 6 passes downward through the grounding terminal mounting groove 19 and is connected to the grounding connecting plate 15, and one side of the grounding terminal mounting groove 19 is provided with a limit block 20 extending downward and abutting against the side of the grounding terminal 6.

[0032] Furthermore, a ground terminal mounting seat 21 is provided in the box body 1 , and the ground terminal mounting seat 21 passes upward through the ground terminal mounting slot 19 and fixes the ground terminal 6 .

[0033] Through the above structure, when the wiring assembly 2 is installed on the base plate 12, the phase line terminal 4 and the control line terminal 5 can be fixed; by utilizing the cooperation of the grounding terminal mounting groove 19 and the limit block 20 on the base plate 12 and the grounding terminal mounting seat 21 on the box body 1, when the box body 1 is installed, the grounding terminal mounting seat 21 on the box body 1 will pass upward through the grounding terminal mounting groove 19 to connect with the grounding terminal 6. At the same time, the grounding terminal mounting seat 21 cooperates with the limit block 20 to clamp the grounding terminal 6 during the movement to prevent it from moving. After the box body 1 is installed, the grounding terminal 6 can be fixed.

[0034] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A junction box for a canned motor pump, comprising a box body (1) and a box cover, wherein a junction assembly (2) and a pin assembly (3) are arranged in the box body (1), wherein the junction assembly (2) comprises a phase line terminal (4), a control line terminal (5) and a grounding terminal (6), wherein the pin assembly (3) is electrically connected to a power distribution assembly in the canned motor pump, wherein a terminal of the pin assembly (3) is electrically connected to the phase line terminal (4) and the control line terminal (5), and wherein the grounding terminal (6) is electrically connected to a grounding bolt, wherein: An outer shell (7) with an upper opening is provided between the wiring assembly (2) and the pin assembly (3); a box cover is arranged on the box body (1) to seal the upper opening of the outer shell (7); a status indicator light is provided in the outer shell (7); and the status indicator light is electrically connected to the phase line terminal (4) via an indicator light terminal (8).

2. A junction box for a canned motor pump according to claim 1, characterized in that: A pair of mounting grooves (9) are arranged on the side of the housing (7), light guide columns corresponding to the status indicator lights are arranged in the mounting grooves (9), and the light guide columns extend to the visible area on the side of the box cover, and a U-shaped plate (10) for mounting the status indicator lights is arranged in the housing (7).

3. A junction box for a canned motor pump according to claim 1, characterized in that: The pin assembly (3) and the housing (7) are formed on a mounting plate (11), the wiring assembly (2) is arranged adjacent to one side of the mounting plate (11), the rear end of the mounting plate (11) and the wiring assembly (2) are respectively fixedly connected to a bottom plate (12), each wiring terminal is electrically connected via a wiring connection piece (13), and a wiring connection groove (14) for accommodating the wiring connection piece (13) is formed at the bottom of the mounting plate (11).

4. A junction box for a canned motor pump according to claim 3, characterized in that: The mounting plate (11) and the wiring assembly (2) are fastened to the box body (1) via fasteners, the grounding terminal (6) is connected to the grounding bolt via a grounding connecting piece (15), and a grounding connecting groove (16) for accommodating the grounding connecting piece (15) is provided at the bottom of the box body (1).

5. A junction box for a canned motor pump according to claim 4, characterized in that: The base plate (12) is provided with a phase line terminal mounting seat (17) for fixing the phase line terminal (4) and a control line terminal mounting seat (18) for fixing the control line terminal (5); the base plate (12) is provided with a grounding terminal mounting groove (19), the grounding terminal (6) passes downward through the grounding terminal mounting groove (19) and is connected to the grounding connecting piece (15), and a stop block (20) is provided on one side of the grounding terminal mounting groove (19) and extends downward and contacts the side of the grounding terminal (6).

6. A junction box for a canned motor pump according to claim 5, characterized in that: A grounding terminal mounting seat (21) is arranged in the box body (1), and the grounding terminal mounting seat (21) passes upward through the grounding terminal mounting slot (19) and fixes the grounding terminal (6).

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