Terminal structure of stainless steel flat electric heating tube

Abstract

The utility model discloses a wiring end structure of a stainless steel flat electric heating tube, which comprises a wiring box shell, a first sealing ring is arranged inside one end of the wiring box shell, an electric heating tube body is movably connected inside the first sealing ring, a second sealing ring is arranged inside the other side of the wiring box shell, and the electric heating tube body is movably connected inside the second sealing ring. The interior of the second sealing ring is movably connected with a connecting line, and the interior of the junction box housing is provided with a junction box body. The sealing performance of the connecting positions of the electric heating tube body, the connecting wire and the junction box body is improved through the first sealing ring and the second sealing ring, dust invasion can be effectively reduced, the transverse plate and the limiting column can be inserted into the limiting hole of the bolt, the position of the bolt can be limited, the bolt is prevented from rotating and slipping due to vibration or external force, and the service life of the electric heating tube is prolonged. Therefore, contact resistance is increased and local overheating occurs, and the overall service life can be effectively prolonged in a limited manner.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric heating tube wiring, specifically relates to a wiring end structure of stainless steel flat electric heating tube. BACKGROUND

[0002] In modern industry and daily life, stainless steel flat electric heating tube is widely used in various heating equipment because of its unique flat shape and high efficient heat transfer in limited space. For example, in electric heater, its flat design can be attached to the internal structure of the equipment to provide uniform and efficient heating. In industrial drying equipment, it can be closely arranged in the drying cavity to realize large-area and stable heat output.

[0003] However, as the key part of connecting power supply and heating element, the wiring end of the electric heating tube plays a crucial role in the normal operation and safety of the electric heating tube. The existing wiring end fastens the wire and the wiring column by bolts. When frequently subjected to external vibration, the bolts of the traditional wiring end structure are prone to loosen, which increases the contact resistance, reduces the working efficiency of the electric heating tube, and may damage the wiring end or even the entire electric heating tube due to local overheating. SUMMARY

[0004] To solve the above technical problems, the utility model adopts one technical scheme: providing a wiring end structure of stainless steel flat electric heating tube, which comprises a wiring box shell, a first sealing ring is arranged inside one end of the wiring box shell, an electric heating tube body is movably connected inside the first sealing ring, a second sealing ring is arranged inside the other side of the wiring box shell, and a connecting wire is movably connected inside the second sealing ring.

[0005] A wiring box body is arranged inside the wiring box shell, a bolt is arranged inside the wiring box body, a limiting hole is arranged on the upper surface of the bolt, a supporting block is movably connected to the inner wall of the wiring box body, a rotating shaft is fixedly connected to the upper surface of the supporting block, a horizontal plate is rotatably connected to the side surface of the rotating shaft, and a limiting column is fixedly connected to the lower surface of the horizontal plate.

[0006] Through the above technical scheme, the sealing property of the connection between the electric heating tube body, the connecting wire and the wiring box body is increased by the first sealing ring and the second sealing ring, which can effectively reduce dust intrusion. The limiting column under the horizontal plate can be inserted into the limiting hole of the bolt to limit the position of the bolt, avoid the bolt from slipping due to vibration or external force, and cause the increase of contact resistance and local overheating. The overall service life can be effectively increased.

[0007] The utility model is further provided with the electric heating tube body penetrating from one end inside the wiring box shell to the inside of the wiring box body, and the connecting wire penetrating from one end inside the wiring box shell to the inside of the wiring box body.

[0008] The utility model further sets up, the side inner wall of junction box shell is provided with installation groove, the side surface of junction box body is fixedly connected with installation block, installation block is located inside installation groove.

[0009] Through above-mentioned technical scheme, installation block and installation groove can guide and limit when junction box body is installed into junction box shell.

[0010] The utility model further sets up, the upper surface of junction box body is provided with hole, the inside screw thread connection of hole has screw, the side surface of screw is screwed with junction box shell.

[0011] Through above-mentioned technical scheme, through screw, junction box body and junction box shell can be fixedly connected together.

[0012] The utility model further sets up, the side inner wall of junction box shell is provided with recess, the inside rotation connection of recess has screw rod, the side surface screw thread connection of screw rod has displacement block.

[0013] Through above-mentioned technical scheme, through the rotation of screw rod, the height of displacement block can be adjusted, and then the height of support block is adjusted.

[0014] The utility model further sets up, the side surface of displacement block is in contact with recess, the side surface of displacement block is fixedly connected with support block.

[0015] The utility model further sets up, the side surface fixedly connected with screw rod has rotation plate, the upper surface of rotation plate is provided with insertion hole, the inside of insertion hole is provided with bolt.

[0016] Through above-mentioned technical scheme, through the rotation of rotation plate, screw rod can be rotated, after the insertion of limiting column into limiting hole, the position of rotation plate can be limited by the insertion of bolt into insertion hole.

[0017] The utility model further sets up, the upper surface movable joint of junction box shell has top cap, the upper surface screw thread connection of top cap has fastening screw, the side surface of fastening screw is screwed with junction box shell.

[0018] The utility model has the advantages as follows:

[0019] Through first sealing ring and second sealing ring, the sealing property of electric heating tube body, connecting wire and junction box body connecting place is increased, dust invasion can be effectively reduced, horizontal plate and limiting column can be inserted into the limiting hole of bolt, the position of bolt can be limited, the rotation of bolt due to vibration or external force is avoided, the situation that contact resistance increases, local overheating appears is avoided, the service life of the whole can be effectively limited. DRAWINGS

[0020] Figure 1 is a first perspective view of the wiring end structure of the stainless steel flat electric heating tube of the utility model;

[0021] Figure 2 is a partial structure internal schematic view of the wiring end structure of the stainless steel flat electric heating tube of the utility model;

[0022] Figure 3 is a partial structure explosion view of the wiring end structure of the stainless steel flat electric heating tube of the utility model;

[0023] Figure 4 is Figure 2 the enlarged view of A in the figure;

[0024] Figure 5 is another partial structure explosion view of the wiring end structure of the stainless steel flat electric heating tube of the utility model;

[0025] Figure 6 is a partial structure schematic view of the wiring end structure of the stainless steel flat electric heating tube of the utility model.

[0026] Reference signs: 1, wiring box shell; 2, electric heating tube body; 3, first sealing ring; 4, wiring box body; 5, mounting groove; 6, mounting block; 7, screw; 8, groove; 9, threaded rod; 10, displacement block; 11, support block; 12, rotating shaft; 13, cross plate; 14, limiting column; 15, bolt; 151, limiting hole; 16, connecting line; 17, second sealing ring; 18, rotating plate; 19, jack; 20, bolt; 21, top cover; 22, fastening screw. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0028] As Figure 1 - Figure 6 shown, the wiring end structure of the stainless steel flat electric heating tube of the utility model, including wiring box shell 1, the inside of one end of wiring box shell 1 is provided with first sealing ring 3, first sealing ring 3 is embedded in the through hole on wiring box shell 1, the inside of first sealing ring 3 is movably connected with electric heating tube body 2, first sealing ring 3 increases the sealing property between electric heating tube body 2 and wiring box shell 1, reduces dust invasion.

[0029] The other side of the junction box shell 1 is internally provided with a second sealing ring 17, which increases the sealing between the connecting wire 16 and the junction box shell 1. The connecting wire 16 is movably connected to the inside of the second sealing ring 17. One end of the electric heating tube body 2 inside the junction box shell 1 penetrates into the inside of the junction box body 4. One end of the connecting wire 16 inside the junction box shell 1 penetrates into the inside of the junction box body 4.

[0030] The side inner wall of the junction box shell 1 is provided with a mounting groove 5. The side surface of the junction box body 4 is fixedly connected with a mounting block 6. The mounting block 6 cooperates with the mounting groove 5 to limit the installation of the junction box body 4 into the junction box shell 1. The mounting block 6 is located inside the mounting groove 5. The upper surface of the junction box body 4 is provided with a hole. The inside of the hole is threadedly connected with a screw 7. The junction box body 4 and the junction box shell 1 can be fixedly connected together through the screw 7. The side surface of the screw 7 is threadedly connected with the junction box shell 1.

[0031] After the junction box body 4 is installed in place, one end of the first sealing ring 3 contacts the junction box body 4, which can avoid the position of the first sealing ring 3 changing and sealing failure in use. The outer diameters of the two ends of the second sealing ring 17 are one centimeter larger than the outer diameter of the middle section. When the second sealing ring 17 is installed on the junction box shell 1, the large diameters of the two ends are located on the inside and outside of the junction box shell 1. The side inner wall of the junction box shell 1 is provided with a groove 8. A threaded rod 9 is rotatably connected to the inside of the groove 8. A displacement block 10 is threadedly connected to the side surface of the threaded rod 9. The height of the displacement block 10 can be adjusted when the threaded rod 9 is rotated.

[0032] The inside of the junction box shell 1 is provided with the junction box body 4. The inside of the junction box body 4 is provided with a bolt 15. The upper surface of the bolt 15 is provided with a limiting hole 151. A support block 11 is movably connected to the inner wall of the junction box body 4. The side surface of the displacement block 10 contacts the groove 8. The side surface of the displacement block 10 is fixedly connected with the support block 11. The upper surface of the support block 11 is fixedly connected with a rotating shaft 12. The side surface of the rotating shaft 12 is rotatably connected with a horizontal plate 13. The lower surface of the horizontal plate 13 is fixedly connected with a limiting column 14.

[0033] The side surface of the threaded rod 9 is fixedly connected with a rotating plate 18. An insertion hole 19 is penetratingly arranged on the upper surface of the rotating plate 18. An insertion pin 20 is penetratingly arranged in the inside of the insertion hole 19. The upper surface of the junction box shell 1 is movably connected with a top cover 21. The upper surface of the top cover 21 is threadedly connected with a fastening screw 22. The side surface of the fastening screw 22 is threadedly connected with the junction box shell 1.

[0034] When the displacement block 10 is displaced up and down, the supporting block 11 and the horizontal plate 13 are displaced up and down; when the electric heating tube body 2, the connecting wire 16 and the connecting piece of the junction box body 4 are fastened and connected together by the bolt 15, the height of the horizontal plate 13 is adjusted at this time, the limiting column 14 is inserted into the limiting hole 151, the position of the bolt 15 is limited, the bolt 20 is inserted into the insertion hole 19 at this time, the both ends of the bolt 20 are bent, the position of the rotating plate 18 is limited by the bolt 20, the rotating plate 18 is prevented from rotating, and the bolt 20 is a wire.

[0035] The working principle of the utility model is as follows: the first sealing ring 3 seals the connecting part between the electric heating tube body 2 and the junction box shell 1, the second sealing ring 17 seals the connecting part between the connecting wire 16 and the junction box shell 1, the electric heating tube body 2 and the connecting wire 16 are connected in the junction box body 4 by the bolt 15, the limiting hole 151 on the bolt 15 is aligned with the limiting column 14 by rotating the horizontal plate 13 after the bolt 15 is tightened, the threaded rod 9 is rotated by rotating the rotating plate 18, the limiting column 14 is inserted into the limiting hole 151 and the position of the bolt 15 is limited by the downward displacement of the limiting column 14, and the rotating plate 18 is limited by inserting the bolt 20 into the insertion hole 19 and then bending the both ends.

[0036] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations by using the contents of the utility model specification and drawings or direct or indirect application in other related technical fields are also included in the patent protection range of the utility model.

Claims

1. A terminal structure of a flat electric heating tube of stainless steel, comprising a terminal box housing (1), characterized in that: One end of the junction box shell (1) is internally provided with a first sealing ring (3), the first sealing ring (3) is movably connected with an electric heating tube body (2), the other side of the junction box shell (1) is internally provided with a second sealing ring (17), the second sealing ring (17) is movably connected with a connecting wire (16); The junction box shell (1) is internally provided with a junction box body (4), the junction box body (4) is internally provided with a bolt (15), the upper surface of the bolt (15) is provided with a limiting hole (151), the inner wall of the junction box body (4) is movably connected with a supporting block (11), the upper surface of the supporting block (11) is fixedly connected with a rotating shaft (12), the side surface of the rotating shaft (12) is rotatably connected with a horizontal plate (13), the lower surface of the horizontal plate (13) is fixedly connected with a limiting column (14).

2. The terminal structure of a flat electric heating tube according to claim 1, wherein The electric heating tube body (2) is located in one end of the junction box shell (1) and penetrates into the junction box body (4), and the connecting wire (16) is located in one end of the junction box shell (1) and penetrates into the junction box body (4).

3. The terminal structure of a flat electric heating tube according to claim 1, wherein The side inner wall of the junction box shell (1) is provided with a mounting groove (5), and the side surface of the junction box body (4) is fixedly connected with a mounting block (6), and the mounting block (6) is located in the mounting groove (5).

4. The terminal structure of a flat electric heating tube according to claim 1, wherein The upper surface of the junction box body (4) is provided with a hole, the inside of the hole is threadedly connected with a screw (7), and the side surface of the screw (7) is threadedly connected with the junction box shell (1).

5. The terminal structure of a flat electric heating tube according to claim 1, wherein The side inner wall of the junction box shell (1) is provided with a groove (8), the inside of the groove (8) is rotatably connected with a threaded rod (9), and the side surface of the threaded rod (9) is threadedly connected with a displacement block (10).

6. The terminal structure of a flat electric heating tube according to claim 5, wherein The side surface of the displacement block (10) is in contact with the groove (8), and the side surface of the displacement block (10) is fixedly connected with the supporting block (11).

7. The terminal structure of a flat electric heating tube according to claim 5, wherein The side surface of the threaded rod (9) is fixedly connected with a rotating plate (18), the upper surface of the rotating plate (18) is provided with a jack (19), and the inside of the jack (19) is provided with a plug pin (20).

8. The terminal structure of a flat electric heating tube according to claim 1, wherein The upper surface of the junction box shell (1) is movably connected with a top cover (21), the upper surface of the top cover (21) is threadedly connected with a fastening screw (22), and the side surface of the fastening screw (22) is threadedly connected with the junction box shell (1).

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