A sealed waterproof type electric heat tracing band terminal box

Abstract

This utility model relates to the field of electric heating cable junction boxes, and discloses a sealed and waterproof electric heating cable junction box, including a lower mounting base for bottom support, an upper mounting base attached to the top of the lower mounting base, a mounting plate fixedly connected to the inner side of the lower mounting base, wiring ports fixedly connected to both sides of the mounting plate, a connector fixedly connected to the top center of the mounting plate, multiple limiting strips fixedly connected inside the lower and upper mounting bases, multiple through-positioning posts fixedly connected to the inner side of the limiting strips, and buffer blocking components installed inside the lower and upper mounting bases to buffer the impact of bursting. A frame-shaped hot melt soft adhesive is fixedly connected to the bottom of the upper mounting base. In this utility model, the device effectively protects against the impact of bursting, improves the safety of the device, increases the convenience of replacing the device when the seal is damaged, and reduces maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of junction boxes for electric heating cables, and in particular to a sealed and waterproof junction box for electric heating cables. Background Technology

[0002] The junction box for electric heating tape is a key connection component in an electric heating system. It is mainly used for the safe connection between the power cord, the electric heating tape, and the temperature control device, and provides waterproof, dustproof, and explosion-proof protection. Its core function is to ensure the reliable electrical connection of the electric heating tape, while preventing the intrusion of moisture, corrosive gases, or flammable media through a sealed structure, thus avoiding dangers caused by short circuits, leakage, or sparks.

[0003] Electric heating cable junction boxes are widely used in the petroleum, chemical, and natural gas industries, inevitably encountering flammable and explosive environments. During operation, heat buildup inside the sealed box can cause it to burst, resulting in the outer casing flying out and affecting the operation of other equipment. To ensure the electric heating cable junction box is waterproof, there are also sealing strips at the connection points. However, long-term use can cause friction on the sealing strips, resulting in a deterioration in the sealing effect. Replacement requires replacing the entire outer casing, which is costly. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealed and waterproof electric heating cable junction box. This device effectively protects against the impact of explosions and improves the ease of replacement of damaged seals.

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

[0006] A sealed and waterproof junction box for electric heating tape includes:

[0007] A lower mounting base for bottom support, with an upper mounting base attached to the top of the lower mounting base, a mounting plate fixedly connected to the inner side of the lower mounting base, wiring ports fixedly connected to both sides of the mounting plate, a connector fixedly connected to the top center of the mounting plate, multiple limiting strips fixedly connected inside the lower and upper mounting bases, multiple through-positioning pins fixedly connected to the inner side of the limiting strips, buffer blocking components installed inside the lower and upper mounting bases to buffer the impact generated by the burst, and a frame-shaped hot melt soft adhesive fixedly connected to the bottom of the upper mounting base;

[0008] The wiring frames used for supporting both sides of the lower mounting base have connecting sleeves threaded to their inner sides. The inner side of each connecting sleeve is equipped with a sealing protection component for sealing and replacing the wiring points. The bottom sides of the upper mounting base are fixedly connected with arc-shaped hot melt soft adhesive.

[0009] Furthermore, the sealing protection assembly includes a rotating sleeve located inside the connecting sleeve, a sealing ring fixedly connected to the inner side of the rotating sleeve, a sealing ring fixedly connected to the inner side of the rotating sleeve's protrusion, and the outer side of the sealing ring fitting into the side groove of the connecting sleeve.

[0010] Furthermore, the buffer blocking assembly includes buffer soft rubber located inside the lower mounting base and the upper mounting base. A support and protection plate is fixedly connected to the inner side of the buffer soft rubber, and a fireproof plate is fixedly connected to the inner side of the support and protection plate. The outer sides of the limiting strips are respectively nested inside the buffer soft rubber, and the outer sides of the interpenetrating positioning posts are respectively interpenetrating inside the buffer soft rubber.

[0011] Furthermore, an anti-detachment limiting piece is fixedly connected to the inner side of the interpenetrating positioning post, and the outer side of the anti-detachment limiting piece is nested inside the cushioning soft rubber.

[0012] Furthermore, sealing grooves are provided on both sides of the top of the lower mounting base, and the outer surface of the frame-shaped hot melt soft adhesive is nested inside the sealing grooves respectively.

[0013] Furthermore, each of the wiring frames has a sealing arc groove at its top, and the outer surface of the arc-shaped hot melt soft adhesive is nested inside the sealing arc groove.

[0014] Furthermore, the rotating sleeve is externally fixedly connected with multiple anti-detachment rings, and the external anti-detachment rings are rotatably connected to the inner side of the connecting sleeve.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the internal components are restricted by the supporting and protective plates on the upper and lower sides. When the internal components burst, the supporting and protective plates are pushed outward at the same time, thereby deforming the buffer soft rubber and buffering the impact force. The device effectively protects against the impact of the burst and improves the safety of the device.

[0017] 2. In this utility model, the wiring is passed through the inside of the sealing ring and the connecting sleeve is screwed into the inside of the wiring frame to seal the wiring interface. When the seal is damaged, the connecting sleeve can be flipped over and removed for replacement, which improves the convenience of replacing the damaged seal and reduces maintenance costs. Attached Figure Description

[0018] Figure 1 This is an overall view of a sealed and waterproof electric heating cable junction box proposed in this utility model;

[0019] Figure 2 This is a diagram of the lower mounting base mechanism of a sealed and waterproof electric heating cable junction box proposed in this utility model;

[0020] Figure 3 This is an internal view of the upper mounting base of a sealed and waterproof electric heating cable junction box proposed in this utility model;

[0021] Figure 4 This is an internal view of the lower mounting base of a sealed and waterproof electric heating cable junction box proposed in this utility model;

[0022] Figure 5 This is a diagram of the connection sleeve mechanism of a sealed and waterproof electric heating cable junction box proposed in this utility model.

[0023] Legend:

[0024] 1. Lower mounting base; 2. Upper mounting base; 3. Wiring frame; 4. Connecting sleeve; 5. Rotating sleeve; 6. Sealing ring; 7. Wiring port; 8. Mounting plate; 9. Connector; 10. Sealing groove; 11. Sealing arc groove; 12. Buffer soft rubber; 13. Fireproof board; 14. Support and protection plate; 15. Through-positioning post; 16. Anti-detachment limit piece; 17. Limiting strip; 18. Anti-detachment ring; 19. Sealing ring; 20. Arc-shaped hot melt soft rubber; 21. Frame-shaped hot melt soft rubber. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a sealed and waterproof electric heating cable junction box, comprising: a lower mounting base 1 for bottom support, and an upper mounting base 2 attached to the top of the lower mounting base 1, as shown in the figure. Figure 2A mounting plate 8 is fixedly connected to the inner side of the lower mounting base 1. Wiring ports 7 are fixedly connected to both sides of the mounting plate 8. A connector 9 is fixedly connected to the top center of the mounting plate 8. Multiple limiting strips 17 are fixedly connected inside both the lower mounting base 1 and the upper mounting base 2. Multiple through-positioning posts 15 are fixedly connected to the inner side of each limiting strip 17. Buffer blocking assemblies are installed inside both the lower mounting base 1 and the upper mounting base 2 to buffer the impact generated by the burst. A frame-shaped hot melt soft adhesive 21 is fixedly connected to the bottom end of the upper mounting base 2. The buffer blocking assembly includes components located inside the lower mounting base 1 and the upper mounting base 2. A cushioning soft rubber 12 is fixedly connected to a support and protection plate 14 on its inner side. A fireproof plate 13 is fixedly connected to the inner side of the support and protection plate 14. The outer sides of the limiting strips 17 are respectively nested inside the cushioning soft rubber 12. The outer sides of the inserting positioning posts 15 are respectively inserted inside the cushioning soft rubber 12. An anti-detachment limiting piece 16 is fixedly connected to the inner side of the inserting positioning posts 15. The outer sides of the anti-detachment limiting piece 16 are respectively nested inside the cushioning soft rubber 12. Sealing grooves 10 are opened on both sides of the top of the lower mounting base 1. The outer sides of the frame-shaped hot melt soft rubber 21 are respectively nested inside the sealing grooves 10.

[0027] The device is assembled by combining the lower mounting base 1 and the upper mounting base 2. First, the frame-shaped hot melt soft adhesive 21 is precisely nested into the sealing groove 10, while the arc-shaped hot melt soft adhesive 20 is tightly embedded in the sealing arc groove 11. Then, the two hot melt soft adhesives are completely bonded and sealed through a high-temperature melting process, and the upper and lower mounting bases are firmly fixed by bolts. When the device explodes due to excessive temperature inside, its special protection mechanism can effectively deal with the situation: the impact force is first diffused to both sides, and the fireproof plate 13 blocks the sparks generated by the explosion to prevent secondary combustion; at the same time, the instantaneous thrust generated by the support protection plate 14 during the outward expansion of the force acts on the buffer soft adhesive 12, and the elastic deformation of the buffer soft adhesive effectively absorbs and disperses the impact energy. This dual protection design not only significantly improves the device's ability to protect against sudden explosion impacts, but also greatly enhances the overall safety and reliability of use.

[0028] Reference Figure 1 , Figure 4 and Figure 5The wiring frame 3 is used to support the two sides of the lower mounting base 1. The inner side of the wiring frame 3 is threaded with a connecting sleeve 4. The inner side of the connecting sleeve 4 is equipped with a sealing protection component for sealing replacement at the wiring point. The bottom two sides of the upper mounting base 2 are fixedly connected with arc-shaped hot melt soft glue 20. The sealing protection component includes a rotating sleeve 5 located inside the connecting sleeve 4. The inner side of the rotating sleeve 5 is fixedly connected with a sealing rubber ring 6. The inner side of the protrusion of the rotating sleeve 5 is fixedly connected with a sealing ring 19. The outer side of the sealing ring 19 fits into the side groove of the connecting sleeve 4. The outer side of the rotating sleeve 5 is fixedly connected with multiple anti-detachment rings 18. The outer side of the anti-detachment rings 18 is rotatably connected to the inner side of the connecting sleeve 4.

[0029] When wiring the connector, first, pass the connector to be wired through the inner cavity of the rotating sleeve 5 and the sealing ring 6 in sequence to achieve initial positioning; then insert the end of the connector into the wiring port 7 to complete the electrical connection. During installation, align the connecting sleeve 4 with the inner groove of the wiring frame 3, and rotate the connecting sleeve 4 so that its external thread engages with the internal thread of the wiring frame 3, thereby gradually screwing the connecting sleeve 4 into the wiring frame 3. During this process, the rotating sleeve 5 will rotate relative to the connector 4 due to the constraint of the wiring outside, effectively avoiding the twisting of the wiring itself, protecting the cable and ensuring the installation quality. This innovative design not only significantly improves the ease of replacing the sealing components, but also greatly reduces maintenance costs, and significantly improves the overall reliability of the device.

[0030] Working principle: When wiring the connector, the connector part to be wired passes through the inside of the rotating sleeve 5 and the inside of the sealing ring 6 to fix the wire. The inner connector is then placed inside the wiring port 7. At this time, the connecting sleeve 4 is placed in the inner groove of the wiring frame 3, and the connecting sleeve 4 is rotated. The external thread of the connecting sleeve 4 contacts the inside of the wiring frame 3, thus forcing the connecting sleeve 4 into the wiring frame 3. As the connecting sleeve 4 rotates, the inner rotating sleeve 5 rotates inside the connecting sleeve 4 due to the external constraint of the wire, preventing the wire from rotating during installation and protecting the wire. The lower mounting base 1 and the upper mounting base 2 are then joined together, and the frame-shaped hot melt soft adhesive 21 is applied. The frame-shaped hot melt adhesive 21 and the arc-shaped hot melt adhesive 20 are nested inside the sealing groove 10. The frame-shaped hot melt adhesive 21 and the arc-shaped hot melt adhesive 20 are melted at high temperature to achieve a seal. The lower mounting seat 1 and the upper mounting seat 2 are fixed by bolts. When the internal temperature of the device is too high and the internal components burst, the resulting impact force spreads to both sides. The bursting force contacts the inner side of the fireproof plate 13, which blocks the sparks and prevents combustion. The support and protection plate 14 is stretched outward by the force, and the instantaneous force of the outward push contacts the buffer adhesive 12, deforming the buffer adhesive 12 and thus buffering the impact force, improving the safety of the device.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealed and waterproof junction box for electric heating tape, characterized in that, include: The lower mounting base (1) is used for bottom support. The top of the lower mounting base (1) is attached to the upper mounting base (2). The inner side of the lower mounting base (1) is fixedly connected to the mounting plate (8). Both sides of the mounting plate (8) are fixedly connected to the wiring port (7). The top center of the mounting plate (8) is fixedly connected to the connector (9). Both the lower mounting base (1) and the upper mounting base (2) are fixedly connected to multiple limiting strips (17). Both the limiting strips (17) are fixedly connected to multiple through positioning posts (15). Both the lower mounting base (1) and the upper mounting base (2) are installed with buffer blocking components to achieve impact buffering caused by bursting. The bottom end of the upper mounting base (2) is fixedly connected to a frame-shaped hot melt soft glue (21). The wiring frame (3) is used to support both sides of the lower mounting base (1). The inner side of the wiring frame (3) is threaded with a connecting sleeve (4). The inner side of the connecting sleeve (4) is equipped with a sealing protection component for sealing replacement at the wiring point. The bottom sides of the upper mounting base (2) are fixedly connected with arc-shaped hot melt soft glue (20).

2. The sealed and waterproof electric heating cable junction box according to claim 1, characterized in that: The sealing protection assembly includes a rotating sleeve (5) located inside the connecting sleeve (4) and rotating. A sealing ring (6) is fixedly connected to the inner side of the rotating sleeve (5), and a sealing ring (19) is fixedly connected to the inner side of the protrusion of the rotating sleeve (5). The outer side of the sealing ring (19) is fitted inside the side groove of the connecting sleeve (4).

3. The sealed and waterproof electric heating cable junction box according to claim 1, characterized in that: The buffer blocking assembly includes a buffer soft rubber (12) located inside the lower mounting base (1) and the upper mounting base (2). A support protection plate (14) is fixedly connected to the inner side of the buffer soft rubber (12). A fireproof plate (13) is fixedly connected to the inner side of the support protection plate (14). The outer side of the limiting strip (17) is nested inside the buffer soft rubber (12). The outer side of the interpenetrating positioning post (15) is interpenetrating inside the buffer soft rubber (12).

4. The sealed and waterproof electric heating cable junction box according to claim 1, characterized in that: The inner side of the interpenetrating positioning post (15) is fixedly connected to an anti-detachment limiting piece (16), and the outer side of the anti-detachment limiting piece (16) is respectively nested inside the buffer soft rubber (12).

5. A sealed and waterproof electric heating cable junction box according to claim 1, characterized in that: The lower mounting base (1) has sealing grooves (10) on both sides of its top end, and the outer side of the frame-shaped hot melt soft adhesive (21) is nested inside the sealing grooves (10).

6. A sealed and waterproof electric heating cable junction box according to claim 1, characterized in that: The top of each wiring frame (3) is provided with a sealing arc groove (11), and the outside of the arc-shaped hot melt soft adhesive (20) is respectively nested inside the sealing arc groove (11).

7. A sealed and waterproof electric heating cable junction box according to claim 2, characterized in that: The rotating sleeve (5) is fixedly connected to a plurality of anti-detachment rings (18), and the anti-detachment rings (18) are rotatably connected to the inner side of the connecting sleeve (4).

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