Novel explosion-proof electric tracing band terminal junction box

Abstract

The utility model relates to the field of electric tracing band production equipment, and discloses a novel explosion-proof electric tracing band terminal junction box which comprises a box body, a containing cavity is formed in the box body, a box cover is slidably connected to the interior of the box body, one side of the box cover is slidably connected to the inner wall of the containing cavity, a sealing ring is slidably connected to the interior of the box body, and the sealing ring is slidably connected to the interior of the box body. A sealing ring is arranged in the box cover, a through hole is formed in the sealing ring in a penetrating mode, the sealing ring is connected to the inner wall of the containing cavity in a sliding mode, an open hole is formed in the box cover in a penetrating mode, the open hole is formed in one side of the through hole, and a bolt is arranged in the box cover in a penetrating mode and connected to the interior of the box body in a sliding mode. According to the junction box, the electric tracing band penetrates through the open hole and the through hole to be placed in the containing cavity, then the bolts are installed in the box body and the box cover to lock the electric tracing band, and the sealing ring is arranged in a taper mode, so that the electric tracing band is completely attached to the interior of the box body, the anti-explosion requirement is met, and the practicability of the junction box is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric heating belt production equipment, in particular to a novel explosion-proof electric heating belt terminal junction box. Background Art

[0002] Electric heating cables are equipment that convert electrical energy into thermal energy. They are widely used for antifreeze, anti-condensation and heat preservation of pipelines, storage tanks, etc. to ensure that the medium maintains fluidity or temperature stability in low temperature environments. The function of the electric heating cable terminal junction box is to connect the electric heating cable to the power supply, while sealing the wiring to prevent water, moisture and other substances from entering, avoiding short circuits or corrosion, and providing electrical safety protection to prevent leakage and electric shock accidents. The junction box is also easy to maintain and overhaul, and usually has a certain level of protection to ensure the long-term stable operation of the electric heating system under various environmental conditions.

[0003] The technical characteristics of the existing electric heating terminal junction box are that it is compressed and clamped by only a small step part of the sealing ring. The compression force of the sealing ring is quite small, and the electric heating cable cannot be completely compressed. It can be pulled out with a little force, which does not meet the explosion-proof requirements. In addition, there are many cracks in the box body and the box cover after installation. Therefore, a new explosion-proof electric heating cable terminal junction box is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a novel explosion-proof electric heating cable terminal junction box, which aims to improve the existing technology that only relies on a small step part of the sealing ring for compression and clamping, and the clamping force of the sealing ring is quite small, which causes the junction box to fail to meet the explosion-proof requirements.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a new explosion-proof electric heating tape terminal junction box, comprising a box body, a cavity is provided inside the box body, a box cover is slidably connected inside the box body, one side of the box cover is slidably connected to the inner wall of the cavity, a sealing ring is slidably connected inside the box body, a through hole is provided through the sealing ring, the sealing ring is slidably connected to the inner wall of the cavity, an opening is provided through the box cover, the opening is arranged on one side of the through hole, a bolt is provided through the box cover, the bolt is slidably connected to the inside of the box body, a slot is provided on one side of the box body, a nut is fixedly connected to the inside of the box body, the nut is threadedly connected to the outer wall of the bolt, and a limiting component for stabilizing the electric heating tape is installed on the outer wall of the bolt.

[0006] Furthermore, the limiting assembly includes a limiting plate, the limiting plate is arranged through the outer wall of the bolt, and a limiting groove is arranged inside the limiting plate.

[0007] Furthermore, a spring is fixedly connected to one side of the inner part of the limiting plate, and one end of the spring is fixedly connected to one side of the inner wall of the limiting groove.

[0008] Furthermore, the other end of the spring is fixedly connected to an arc-shaped plate, and the outer wall of the arc-shaped plate is fixedly connected to a limit block which is symmetrical up and down.

[0009] Furthermore, a plurality of arc-shaped clamping blocks are fixedly connected to one side of the outer wall of the arc-shaped plate, and the outer wall of the limiting block is slidably connected to the inner wall of the limiting groove.

[0010] Furthermore, two limiting plates are symmetrically arranged, and outer walls of the two limiting plates are attached to one side of the outer wall of the box cover.

[0011] Furthermore, the sealing ring is configured in a cone shape and is made of silicone.

[0012] Furthermore, the inner diameter of the opening is larger than the inner diameter of the through hole, and the cavity, the sealing ring and the opening are arranged in sequence in a straight line.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the electric heating tape is passed through the opening and the through hole into the cavity, and then the electric heating tape is locked by installing bolts inside the box body and the box cover, and then the sealing ring is set in a tapered manner, so that the electric heating tape is completely fitted in the box body, meeting the explosion-proof requirements and improving the practicality of the junction box.

[0015] 2. In the utility model, the limit plate is tightly attached to one side of the box cover by installing bolts. When the electric heating tape is pulled, the arc-shaped clamping block will be driven by the reaction force of the spring and then engaged with the outer wall of the electric heating tape, thereby further stabilizing the electric heating tape and improving the practicality of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a new explosion-proof electric heating cable terminal junction box proposed by the utility model;

[0017] Figure 2 This is a schematic side view of the three-dimensional structure of a new explosion-proof electric heating cable terminal junction box proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the sealing ring structure of a new explosion-proof electric heating cable terminal junction box proposed by the utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of a box cover of a new explosion-proof electric heating cable terminal junction box proposed by the utility model;

[0020] Figure 5 The utility model provides a schematic cross-sectional view of a limit plate of a novel explosion-proof electric heating cable terminal junction box.

[0021] Legend:

[0022] 1. Box body; 2. Box cover; 3. Cavity; 4. Sealing ring; 5. Through hole; 6. Opening hole; 7. Slot; 8. Bolt; 9. Nut; 10. Limiting plate; 11. Limiting slot; 12. Spring; 13. Limiting block; 14. Arc plate; 15. Arc clamping block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] Reference Figure 2 , Figure 3 and Figure 4 The utility model provides an embodiment: a novel explosion-proof electric heating cable terminal junction box, comprising a box body 1, a cavity 3 is provided inside the box body 1, a box cover 2 is slidably connected inside the box body 1, one side of the box cover 2 is slidably connected to the inner wall of the cavity 3, a sealing ring 4 is slidably connected inside the box body 1, a through hole 5 is provided through the sealing ring 4, the sealing ring 4 is slidably connected to the inner wall of the cavity 3, an opening 6 is provided through the box cover 2, the opening 6 is arranged on one side of the through hole 5, a bolt 8 is provided through the box cover 2, the bolt 8 is slidably connected to the inside of the box body 1, a slot 7 is provided on one side of the inside of the box body 1, a nut 9 is fixedly connected inside the box body 1, the nut 9 is threadedly connected to the outer wall of the bolt 8, and a limiting component for stabilizing the electric heating cable is installed on the outer wall of the bolt 8; the limiting component comprises a limiting plate 10, the limiting plate 10 is provided through the outer wall of the bolt 8, and a limiting slot 11 is provided inside the limiting plate 10;

[0025] Specifically, the electric heating tape is introduced into the cavity 3 through the opening 6 and the through hole 5, ensuring that the sealing ring 4 is embedded in the outer wall of the electric heating tape. Subsequently, the box cover 2 is covered on one side of the box body 1, and the box body 1 and the box cover 2 are locked by installing bolts 8 and connecting nuts 9. This design not only effectively fixes the electric heating tape, but also through the conical setting of the sealing ring 4, the electric heating tape is completely fitted into the inside of the box body 1, thereby improving the explosion-proof effect.

[0026] Reference Figure 1 and Figure 5A spring 12 is fixedly connected to one side of the inner wall of the limiting groove 11; an arc plate 14 is fixedly connected to the other end of the spring 12, and a limit block 13 symmetrically connected to the outer wall of the arc plate 14 is fixedly connected to the upper and lower walls; a plurality of arc-shaped blocks 15 are fixedly connected to one side of the outer wall of the arc plate 14, and the outer wall of the limit block 13 is slidably connected to the inner wall of the limiting groove 11; two limit plates 10 are symmetrically arranged, and the outer walls of the two limit plates 10 are attached to one side of the outer wall of the box cover 2; the sealing ring 4 is conically arranged, and the sealing ring 4 is made of silicone; the inner diameter of the opening 6 is larger than the inner diameter of the through hole 5, and the cavity 3, the sealing ring 4, and the opening 6 are arranged in a straight line in sequence;

[0027] Specifically, when the bolt 8 is installed, the limit plate 10 is tightly attached to one side of the box cover 2; when the electric heating tape is pulled, the arc-shaped block 15 will be squeezed under the reaction force of the spring 12, and automatically snap onto the outer wall of the electric heating tape to further stabilize its position; this design not only enhances the stability of the electric heating tape, but also effectively prevents accidental movement, ensuring the safety and reliability of equipment operation.

[0028] Working principle: When in use, the electric heating tape is passed through the opening 6 and the through hole 5 and placed inside the cavity 3, so that the sealing ring 4 is arranged on the outer wall of the electric heating tape. Then, the box cover 2 is covered on one side of the box body 1, and the bolt 8 is installed inside the box body 1 and the box cover 2, so that it is connected with the nut 9, thereby locking the electric heating tape. At the same time, the sealing ring 4 is set in a tapered manner, so that the electric heating tape is completely fitted in the box body 1, achieving an explosion-proof effect.

[0029] Secondly, the limit plate 10 is pressed against one side of the box cover 2 while the bolts 8 are installed. When the electric heating tape is pulled, the arc-shaped clamping block 15 will be pushed and squeezed by the reaction force of the spring 12, and then be clamped on the outer wall of the electric heating tape, thereby further stabilizing the electric heating tape.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel explosion-proof electric heating cable terminal junction box, comprising a box body (1), characterized in that: The box body (1) has a cavity (3) formed inside, a box cover (2) is slidably connected inside the box body (1), one side of the box cover (2) is slidably connected to the inner wall of the cavity (3), a sealing ring (4) is slidably connected inside the box body (1), a through hole (5) is formed through the sealing ring (4), the sealing ring (4) is slidably connected to the inner wall of the cavity (3), an opening (6) is formed through the box cover (2), the opening (6) is arranged on one side of the through hole (5), a bolt (8) is formed through the box cover (2), the bolt (8) is slidably connected to the inside of the box body (1), a slot (7) is formed on one side of the box body (1), a nut (9) is fixedly connected inside the box body (1), the nut (9) is threadedly connected to the outer wall of the bolt (8), and a limiter assembly for stabilizing the electric heating belt is installed on the outer wall of the bolt (8).

2. According to claim 1, a new explosion-proof electric heating cable terminal junction box is characterized in that: The limiting assembly comprises a limiting plate (10), the limiting plate (10) is arranged through the outer wall of the bolt (8), and a limiting groove (11) is provided inside the limiting plate (10).

3. A new explosion-proof electric heating cable terminal junction box according to claim 2, characterized in that: A spring (12) is fixedly connected to one side of the interior of the limiting plate (10), and one end of the spring (12) is fixedly connected to one side of the inner wall of the limiting groove (11).

4. The novel explosion-proof electric heating cable terminal junction box according to claim 3 is characterized in that: The other end of the spring (12) is fixedly connected to an arc-shaped plate (14), and the outer wall of the arc-shaped plate (14) is fixedly connected to a limit block (13) which is symmetrical up and down.

5. The novel explosion-proof electric heating cable terminal junction box according to claim 4 is characterized in that: A plurality of arc-shaped clamping blocks (15) are fixedly connected to one side of the outer wall of the arc-shaped plate (14), and the outer wall of the limit block (13) is slidably connected to the inner wall of the limit groove (11).

6. The novel explosion-proof electric heating cable terminal junction box according to claim 3 is characterized in that: Two of the limiting plates (10) are symmetrically arranged on both sides, and the outer walls of the two limiting plates (10) are attached to one side of the outer wall of the box cover (2).

7. A new explosion-proof electric heating cable terminal junction box according to claim 6, characterized in that: The sealing ring (4) is arranged in a conical shape and is made of silicone.

8. The novel explosion-proof electric heating cable terminal junction box according to claim 1 is characterized in that: The inner diameter of the opening (6) is greater than the inner diameter of the through hole (5), and the chamber (3), the sealing ring (4), and the opening (6) are arranged in sequence in a straight line.

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