Level gauge junction box

Abstract

This utility model discloses a level gauge junction box, including a box body and a top cover. The box body includes a main body and a bottom plate. The bottom plate of the box body is provided with an annular wall and three radially arranged partitions, which divide the annular wall into three independent chambers. A through hole is provided at each independent chamber on the bottom plate. A connecting pipe is provided on the side wall of the main body. The end of the connecting pipe is provided with multiple elastic teeth. A sealing ring is provided inside the connecting pipe. A connector cap is threadedly connected to the connecting pipe. The level gauge junction box provided by this utility model has improved structural strength and sealing performance at the connecting pipe, thereby significantly improving reliability and practicality in industrial applications.

Description

Technical Field

[0001] This utility model relates to the field of liquid level gauge technology, and in particular to a liquid level gauge junction box. Background Technology

[0002] In industrial process control, level gauges are critical instruments for measuring liquid levels in containers, and the reliability of their junction boxes directly impacts measurement accuracy and equipment safety. Traditional junction boxes often employ a single sealing ring with a rigid interface. When subjected to vibration, temperature changes, or prolonged use, the sealing ring is prone to aging and deformation, leading to a decline in waterproof and dustproof performance. For example, corrosive media or humid environments in the chemical industry can accelerate seal failure, potentially causing short circuits or signal interference. Furthermore, some junction boxes, designed to accommodate multi-electrode level gauges (such as three-electrode level gauges), use only simple or no separation, resulting in chaotic electrode wiring, signal crosstalk, and compromised measurement accuracy.

[0003] In view of the above technical problems, this utility model proposes a new liquid level gauge junction box, which can improve the strength of the liquid level gauge junction box and the sealing performance of the wiring pipe, and make the installation of the three electrodes of the liquid level gauge convenient and the wiring orderly. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a liquid level gauge junction box, which aims to solve the technical problems of the general strength of the liquid level gauge junction box and the insufficient sealing performance of the wiring pipe in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A level gauge junction box includes a box body and a top cover. The box body includes a main body and a bottom plate. The bottom plate of the box body is provided with an annular wall and three radially arranged partitions. The three partitions divide the annular wall into three independent chambers. The bottom plate is provided with a through hole corresponding to each independent chamber. A connecting pipe is provided on the side wall of the main body. The end of the connecting pipe is provided with multiple elastic teeth. A sealing ring is provided inside the connecting pipe. A connector cap is threadedly connected to the connecting pipe.

[0007] Furthermore, in the liquid level gauge junction box, the bottom plate is provided with a positioning boss at each through hole, and each through hole passes through the corresponding positioning boss.

[0008] Furthermore, in the liquid level gauge junction box, the inside of the connecting pipe is provided with an annular positioning step, and the annular positioning step has an annular positioning groove; one end of the sealing ring is provided with an annular flange, and the annular flange is inserted into the annular positioning groove.

[0009] Furthermore, in the liquid level gauge junction box, each elastic tooth is evenly distributed in the circumferential direction.

[0010] Furthermore, in the liquid level gauge junction box, the end of the sealing ring facing outward is flush with the end of the elastic tooth facing outward, and the axial length of the sealing ring is greater than the length of the elastic tooth.

[0011] Furthermore, in the liquid level gauge junction box, the side wall of the top cover is evenly distributed with grooves along the circumferential direction.

[0012] Furthermore, in the aforementioned level gauge junction box, the box body, connecting pipe, annular wall, positioning boss, and three partition plates are integrally formed.

[0013] Beneficial effects: This utility model provides a liquid level gauge junction box, which has at least the following advantages compared with the prior art:

[0014] (1) The three independent chambers are formed by the annular wall and three radial partitions set in the base plate, so as to realize the orderly layout of the wiring of the three-electrode level gauge, avoid cable tangling and signal crosstalk, and improve wiring efficiency and measurement accuracy.

[0015] (2) The elastic teeth evenly distributed around the end of the connector cooperate with the internal sealing ring. When the connector cap is tightened, the elastic teeth deform inward and squeeze the sealing ring. Combined with the precise positioning of the annular positioning step, annular positioning groove and annular flange, the sealing effect is improved, effectively coping with vibration, temperature difference and other working conditions, and extending the sealing life.

[0016] (3) Furthermore, the box body, pipe and other structures are integrally injection molded to eliminate splicing gaps, improve structural strength, simplify the production process and reduce assembly errors. The circumferential groove design of the top cover enhances grip friction and facilitates disassembly and maintenance, significantly improving the reliability and practicality in industrial applications. Attached Figure Description

[0017] Figure 1 The three-dimensional liquid level gauge junction box provided by this utility model Figure 1 .

[0018] Figure 2 The three-dimensional liquid level gauge junction box provided by this utility model Figure 2 The connector cover is not shown in the diagram.

[0019] Figure 3 The three-dimensional liquid level gauge junction box provided by this utility model Figure 3 The top cover, connector cover, and sealing ring are not shown in the diagram.

[0020] Figure 4 A perspective sectional view of the level gauge junction box provided by this utility model.

[0021] Figure 5 for Figure 3 A magnified view of part A in the middle.

[0022] Figure 6 for Figure 4 A magnified view of part B in the middle section.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Top cover; 10. Groove

[0025] 21. The main body of the box; 22. The bottom plate of the box; 220. Through hole;

[0026] 3. Connector; 31. Elastic tooth; 32. Annular positioning step; 320. Annular positioning groove;

[0027] 4. Sealing ring; 41. Annular flange;

[0028] 5. Connector cover;

[0029] 6. Annular wall;

[0030] 7. Partition;

[0031] 8. Positioning boss. Detailed Implementation

[0032] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0033] Please see Figures 1 to 6 This utility model provides a liquid level gauge junction box. The accompanying drawings are for illustrative purposes only and are not proportional to an actual product. The drawings only depict structures relevant to the present utility model; some conventional structures are not specifically shown. The term "multiple" as used herein refers to a quantity of two or more, as the exact number of structures referred to is not a specific limitation on the inventive point.

[0034] The level gauge junction box includes a box body and a top cover 1. The box body includes a main body 21 and a bottom plate 22. The top cover is threadedly connected to the box body. The bottom plate of the box body is provided with an annular wall 6 and three radially arranged partitions 7. The three partitions divide the annular wall into three independent chambers. The bottom plate 22 is provided with a through hole 220 corresponding to each independent chamber. A connecting pipe 3 is provided on the side wall of the main body. The end of the connecting pipe is provided with multiple elastic teeth. A sealing ring 4 is provided inside the connecting pipe. A connector cap 5 is threadedly connected to the connecting pipe.

[0035] The aforementioned elastic tooth root connects to the connecting pipe, and its free end exhibits a certain degree of elasticity when subjected to force. Furthermore, the free end of the elastic tooth can tilt inward toward the inside of the connecting pipe. When the connector cap is tightened, the elastic tooth is compressed, generating inward elastic deformation and pressing the sealing ring. When the connector cap is tightened, the elastic tooth deforms inward like a "finger," compressing the sealing ring. Even with minor machining errors in the connecting pipe and connector cap, the deformation of the elastic tooth can "adapt" to ensure that the sealing ring is always compressed, guaranteeing a good sealing effect.

[0036] In actual use, one electrode of the level gauge is inserted into each through-hole, with the tip of the electrode extending into the housing. The level gauge cable extends into the housing from the connector. After wiring is complete, tighten the top cover and the connector cap. A sealing ring is installed inside the connector to ensure a tight seal.

[0037] The three radial baffles divide the annular wall into three independent chambers, each corresponding to the wiring space of one electrode, avoiding wiring tangling and short circuits in the three-electrode level gauge and solving the "signal crosstalk" problem of traditional junction boxes without partitions.

[0038] Furthermore, the base plate is provided with a positioning boss 8 at each through hole, and each through hole 220 passes through the corresponding positioning boss 8. The electrode passes through the through hole of the base plate from the outside of the box. The positioning boss at the through hole axially limits the cable to ensure that the cable passes through the base plate perpendicularly and avoids deviation.

[0039] Please see Figure 5 and Figure 6 Furthermore, the inside of the connector 3 is provided with an annular positioning step 32, and the annular positioning step has an annular positioning groove 320; one end of the sealing ring is provided with an annular flange, which is inserted into the annular positioning groove. When the sealing ring is installed, the annular positioning step and the annular positioning groove can abut against one end of the sealing ring, restricting its axial (along the length of the connector) movement within the connector. The annular positioning step, combined with the connector, can provide radial (along the circumference of the connector) support for the sealing ring, allowing the sealing ring to fit evenly against the inner wall of the connector and avoiding the problem of "one side tight, one side loose".

[0040] Furthermore, the elastic teeth 31 are evenly distributed in the circumferential direction. When the connector cap is tightened, each elastic tooth can evenly compress the sealing ring, further improving the sealing performance.

[0041] like Figure 6 As shown, furthermore, the outward-facing end of the sealing ring 4 is flush with the outward-facing end of the elastic tooth 31, and the axial length of the sealing ring is greater than the length of the elastic tooth. This arrangement allows the inner wall of each elastic tooth to completely adhere to the outer wall of the sealing ring, preventing the gaps between the elastic teeth from communicating with the inside of the pipe.

[0042] like Figure 2As shown, furthermore, the sidewall of the top cover 1 is evenly distributed with grooves 10 along the circumferential direction. The grooves serve as an anti-slip structure, making it easy to tighten or loosen the top cover.

[0043] Furthermore, the housing, connecting pipe, annular wall, positioning boss, and three partitions are integrally formed (preferably injection molded). This design facilitates improved production efficiency, precise dimensional control, and enhanced structural strength and sealing reliability.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and inventive concept of the present utility model, and all such modifications or substitutions should fall within the protection scope of the present utility model.

Claims

1. A level gauge junction box, comprising a box body and a top cover, characterized in that: The box body includes a main body and a bottom plate; the bottom plate of the box body is provided with an annular wall and three radially arranged partitions, the three partitions divide the annular wall into three independent chambers, and the bottom plate is provided with a through hole corresponding to each independent chamber; the side wall of the main body is provided with a connecting pipe, the end of the connecting pipe is provided with multiple elastic teeth, the inside of the connecting pipe is provided with a sealing ring, and the connecting pipe is threadedly connected to a connector cap.

2. The level gauge junction box according to claim 1, characterized in that: The base plate has a positioning boss at each through hole, and each through hole passes through the corresponding positioning boss.

3. The level gauge junction box according to claim 1, characterized in that: The inside of the connector is provided with an annular positioning step, and the annular positioning step has an annular positioning groove; one end of the sealing ring is provided with an annular flange, which is inserted into the annular positioning groove.

4. The level gauge junction box according to claim 1, characterized in that: Each elastic tooth is evenly distributed in the circumferential direction.

5. The level gauge junction box according to claim 4, characterized in that: The outer end of the sealing ring is flush with the outer end of the elastic tooth, and the axial length of the sealing ring is greater than the length of the elastic tooth.

6. The level gauge junction box according to claim 1, characterized in that: The sidewalls of the top cover are evenly distributed with grooves along the circumference.

7. The level gauge junction box according to claim 2, characterized in that: The box body, connecting pipe, annular wall, positioning boss, and three partitions are integrally molded.

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