Sealing structure for sealing opening of electric heating tube

Abstract

The utility model belongs to the technical field of electric heating tube sealing, and particularly relates to an electric heating tube sealing position sealing structure which comprises an electric heating tube body and a sealing connector, a butt joint female connector is arranged at one end of the electric heating tube body, and a butt joint male connector is arranged at one end of the sealing connector. The butt joint female joint and the butt joint male joint can be connected in a clamping manner; the electric heating tube has the advantages that the electric heating tube body is sealed through the sealing connector, and the sealing connector and the electric heating tube body are connected in a clamped mode, so that butt joint and disassembly between the electric heating tube body and the sealing connector are convenient and fast; meanwhile, the elastic sealing assembly can be used for sealing the joint of the two parts, and an elastic sealing mode is adopted, so that a good sealing effect can be achieved even if a sealing ring is abraded; by arranging the reinforcing assembly, the butt-joint female connector can be wrapped, so that accidental separation between the butt-joint female connector and the butt-joint male connector is avoided, and the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating pipe sealing, in particular to a sealing structure at the sealing point of an electric heating pipe. Background Art

[0002] Tubular electric heating element (referred to as electric heating tube) is an electrical component that converts electrical energy into thermal energy. It uses a metal tube as the outer shell (including stainless steel and copper tube), and spiral electric heating alloy wire (nickel-chromium, iron-chromium alloy) is evenly distributed along the central axis of the tube. The gap is filled with compacted magnesium oxide sand with good insulation and thermal conductivity. The two ends of the tube are sealed with silicone. This metal armored electric heating element can heat air, metal molds and various liquids. Common electric heating tubes include finned electric heating tubes, Teflon electric heating tubes, quartz electric heating tubes, etc. Because of its low price, easy use, easy installation, and no pollution, it is widely used in various heating occasions.

[0003] In the existing sealing structure of the sealing end of the electric heating pipe, the electric heating pipe and the sealing component are usually connected by threads, and a sealing ring is arranged between the pipe mouth of the electric heating pipe and the sealing component; the problems existing in this traditional sealing method are: the threads on the inner wall or outer wall of the electric heating pipe and the sealing component are easy to rust and damage, and the method of sealing the pipe mouth by the sealing ring is achieved by the elasticity of the sealing ring, and the sealing ring will lose its elasticity after long-term use, resulting in a loose seal. Utility Model Content

[0004] In view of the problems existing in the sealing structure of the sealing portion of the existing electric heating pipe, the utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a sealing structure at the sealing end of an electric heating pipe, which solves the problem of the existing sealing structure at the sealing end of an electric heating pipe. The electric heating pipe and the sealing component are usually connected by threads, and a sealing ring is arranged between the pipe mouth of the electric heating pipe and the sealing component. The problems existing in this traditional sealing method are: the threads on the inner wall or the outer wall of the electric heating pipe and the sealing component are easy to rust and be damaged, and the method of sealing the pipe mouth by the sealing ring is achieved by the elasticity of the sealing ring. The sealing ring will lose its elasticity after long-term use, thereby causing the problem of loose sealing.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A sealing structure for sealing an electric heating pipe, comprising an electric heating pipe body and a sealing joint, wherein one end of the electric heating pipe body is provided with a butt-jointed female joint, and one end of the sealing joint is provided with a butt-jointed male joint, and the butt-jointed female joint and the butt-jointed male joint can be connected by snapping;

[0008] An elastic sealing component is arranged in the butt-jointed female joint, and the elastic sealing component can elastically seal the connection between the butt-jointed female joint and the butt-jointed male joint.

[0009] As a preferred solution of the sealing structure at the sealing end of an electric heating pipe described in the utility model, a cavity is provided in the middle of the butt-jointed female joint, and an opening is provided at one end thereof.

[0010] As a preferred solution of the sealing structure at the sealing end of an electric heating pipe described in the utility model, the elastic sealing assembly includes a telescopic rod, a spring is sleeved on the telescopic rod, one end of the telescopic rod is fixedly connected to a circular support ring, and one end of the circular support ring is fixedly connected to a sealing ring.

[0011] As a preferred solution of the sealing structure at the sealing end of an electric heating pipe described in the utility model, wherein: a groove is opened on the inner wall of the butt-jointed female joint, and the telescopic rod is inserted into the inner wall of the groove.

[0012] As a preferred solution of the sealing structure of the electric heating pipe sealing part described in the utility model, wherein: one end of the butt-jointed female joint is provided with an opening and a notch, an annular groove is provided on the inner wall of the opening, and a clamping groove is provided on the inner wall of the annular groove;

[0013] A clamping protrusion is integrally formed on the outer wall of the butt-jointed male connector, and the clamping protrusion has the same shape and size as the clamping groove.

[0014] As a preferred solution of the sealing structure at the sealing end of an electric heating pipe described in the utility model, it also includes a reinforcement component, which includes two wrapping parts, and the two wrapping parts wrap the butt-jointed female joint in its inner cavity, and the two wrapping parts are fixed by bolts.

[0015] As a preferred solution of the sealing structure at the sealing end of the electric heating pipe described in the utility model, a first fixing block is welded on the outer wall of the circumferential surface of the wrapping member, and the first fixing blocks on the two wrapping members are connected by bolts.

[0016] As a preferred solution of the sealing structure at the sealing end of an electric heating tube described in the utility model, wherein: a second fixing block is provided on the side outer wall of the wrapping piece, the inner wall of the second fixing block is threadedly connected to a fastening threaded pin, one end of the fastening threaded pin is fixedly installed with a clamping block, and the other end is fixedly connected to a turntable.

[0017] As a preferred solution of the sealing structure at the sealing end of the electric heating pipe described in the utility model, a sealing gasket is bonded to the inner wall of the wrapping piece on the right side.

[0018] Compared with existing technologies:

[0019] 1. The electric heating tube body is sealed by setting a sealing joint, and the two are connected by a card, so that the connection and disassembly are convenient; at the same time, the elastic sealing component can be used to seal the interface between the two, and it is an elastic sealing method, even if the sealing ring is worn, it can still achieve a good sealing effect;

[0020] 2. By providing a reinforcement component, the butt-jointed female joint can be wrapped, thereby avoiding accidental separation between the butt-jointed female joint and the butt-jointed male joint, thereby ensuring a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure provided for Example 1 of the utility model;

[0022] Figure 2 A three-dimensional diagram of a butt-jointed male connector provided in Example 1 of the utility model;

[0023] Figure 3 A bottom view of the butt-jointed female connector provided in Example 1 of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure provided for Example 2 of the utility model.

[0025] In the figure: electric heating tube body 1, butt-jointed female joint 2, butt-jointed male joint 3, snap-fit ​​protrusion 4, sealing joint 5, opening 6, annular groove 7, spring 8, groove 9, cavity 11, notch 12, snap-fit ​​groove 13, fastening threaded pin 14, wrapping member 15, first fixing block 16, sealing gasket 18, second fixing block 20, turntable 21, bolt 22, first internal threaded hole 23, second internal threaded hole 24, circular support ring 25, sealing ring 26, telescopic rod 27, and clamping block 28. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Embodiment 1:

[0028] The utility model provides a sealing structure for the sealing of an electric heating pipe. Figure 1-3 , including an electric heating pipe body 1 and a sealing joint 5, the sealing joint 5 can achieve sealing of the bottom opening of the electric heating pipe body 1, one end of the electric heating pipe body 1 is provided with a butt-joint female joint 2, one end of the sealing joint 5 is provided with a butt-joint male joint 3, the butt-joint female joint 2 and the butt-joint male joint 3 can be connected by snapping, and the connection by snapping can greatly facilitate the docking;

[0029] An elastic sealing component is arranged in the butt-jointed female joint 2 , and the elastic sealing component can elastically seal the connection between the butt-jointed female joint 2 and the butt-jointed male joint 3 .

[0030] A cavity 11 is provided in the middle of the butt-jointed female connector 2, and an opening is provided at one end thereof.

[0031] The elastic sealing assembly includes a telescopic rod 27, which can maintain the stability of the spring 8 so that the spring 8 will not be distorted, thereby ensuring the normal elastic force of the spring 8. The spring 8 is sleeved on the telescopic rod 27, and one end of the telescopic rod 27 is fixedly connected to a circular support ring 25. The elastic force of the spring 8 can apply an extrusion force to the circular support ring 25. One end of the circular support ring 25 is fixedly connected to a sealing ring 26. The sealing ring 26 squeezes the gap between the butt-jointed female connector 2 and the butt-jointed male connector 3, thereby achieving sealing between the butt-jointed female connector 2 and the butt-jointed male connector 3.

[0032] A groove 9 is provided on the inner wall of the butt-jointed female connector 2, and the telescopic rod 27 is inserted into the inner wall of the groove 9. The butt-jointed female connector 2 and the telescopic rod 27 are plugged in, which can facilitate the installation and removal of the telescopic rod 27.

[0033] An opening 6 and a notch 12 are provided at one end of the butt-jointed female connector 2. The cross-section of the notch 12 is the same as the cross-section of the clamping protrusion 4, so that the clamping protrusion 4 can pass through the notch 12. An annular groove 7 is provided on the inner wall of the opening 6. A clamping groove 13 is provided on the inner wall of the annular groove 7. The clamping protrusion 4 can be clamped into the clamping groove 13.

[0034] A clamping protrusion 4 is integrally formed on the outer wall of the butt-jointed male connector 3 , and the clamping protrusion 4 has the same shape and size as the clamping groove 13 .

[0035] During actual use, the snap-fit ​​protrusion 4 is aligned with the notch 12 so that the butt-jointed male connector 3 enters into the butt-jointed female connector 2, and the butt-jointed male connector 3 is rotated ninety degrees so that the snap-fit ​​protrusion 4 is aligned with the snap-fit ​​groove 13. Driven by the elastic force of the spring 8, the circular support ring 25 drives the sealing ring 26 to be squeezed tightly, and at the same time, the snap-fit ​​protrusion 4 enters into the snap-fit ​​groove 13, thereby achieving sealing between the butt-jointed female connector 2 and the butt-jointed male connector 3.

[0036] Embodiment 2:

[0037] See attached Figure 4 , which is different from Example 1, is that it also includes a reinforcement component, which includes two wrapping members 15. The two wrapping members 15 wrap the docking female connector 2 in its inner cavity, and the two wrapping members 15 are fixed by bolts 22.

[0038] A first fixing block 16 is welded on the outer wall of the circumferential surface of the wrapping member 15 , and the first fixing blocks 16 on two wrapping members 15 are connected by bolts.

[0039] A second fixing block 20 is provided on the side outer wall of the wrapping piece 15, and the inner wall of the second fixing block 20 is threadedly connected to the fastening threaded pin 14, one end of the fastening threaded pin 14 is fixedly installed with a clamping block 28, and the other end is fixedly connected to the turntable 21; a first internal threaded hole 23 is provided on the first fixing block 16, and the inner wall of the first internal threaded hole 23 is threadedly connected to the bolt 22; a second internal threaded hole 24 is provided on the second fixing block 20, and the inner wall of the second internal threaded hole 24 is threadedly connected, and a sealing gasket 18 is bonded to the inner wall of the right wrapping piece 15.

[0040] During specific use, the snap-fit ​​protrusion 4 is aligned with the notch 12 so that the butt-joint male connector 3 enters into the butt-joint female connector 2, and the butt-joint male connector 3 is rotated ninety degrees so that the snap-fit ​​protrusion 4 is aligned with the snap-fit ​​groove 13. Driven by the elastic force of the spring 8, the circular support ring 25 drives the sealing ring 26 to be squeezed tightly, and at the same time, the snap-fit ​​protrusion 4 enters into the snap-fit ​​groove 13 to achieve the seal between the butt-joint female connector 2 and the butt-joint male connector 3; one of the wrapping pieces 15 is put on the electric heating tube body 1, and the other wrapping piece 15 is put on the sealing joint 5, and the two wrapping pieces 15 are connected by bolts, thereby avoiding accidental separation between the butt-joint female connector 2 and the butt-joint male connector 3.

[0041] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sealing structure for sealing an electric heating pipe, comprising an electric heating pipe body (1) and a sealing joint (5), characterized in that: One end of the electric heating pipe body (1) is provided with a butt-jointed female joint (2), and one end of the sealing joint (5) is provided with a butt-jointed male joint (3), and the butt-jointed female joint (2) and the butt-jointed male joint (3) can be connected by snapping; An elastic sealing component is arranged inside the butt-jointed female joint (2), and the elastic sealing component can elastically seal the connection between the butt-jointed female joint (2) and the butt-jointed male joint (3).

2. The sealing structure for sealing an electric heating pipe according to claim 1, characterized in that: The butt-jointed female joint (2) is provided with a cavity (11) in the middle and an opening at one end.

3. The sealing structure for sealing an electric heating pipe according to claim 1, characterized in that: The elastic sealing assembly comprises a telescopic rod (27), a spring (8) is sleeved on the telescopic rod (27), one end of the telescopic rod (27) is fixedly connected to a circular support ring (25), and one end of the circular support ring (25) is fixedly connected to a sealing ring (26).

4. The sealing structure for sealing an electric heating pipe according to claim 3, characterized in that: A groove (9) is provided on the inner wall of the butt-jointed female joint (2), and the telescopic rod (27) is inserted into the inner wall of the groove (9).

5. The sealing structure for sealing an electric heating pipe according to claim 1, characterized in that: An opening (6) and a notch (12) are provided at one end of the butt-jointed female connector (2); an annular groove (7) is provided on the inner wall of the opening (6); and a clamping groove (13) is provided on the inner wall of the annular groove (7); A clamping protrusion (4) is integrally formed on the outer wall of the butt-jointed male connector (3), and the clamping protrusion (4) has the same shape and size as the clamping groove (13).

6. The sealing structure for sealing an electric heating pipe according to claim 1, characterized in that: It also includes a reinforcement component, which includes two wrapping members (15). The two wrapping members (15) wrap the butt-jointed female joint (2) in its inner cavity, and the two wrapping members (15) are fixed by bolts (22).

7. The sealing structure for sealing an electric heating pipe according to claim 6, characterized in that: A first fixing block (16) is welded on the outer wall of the circumferential surface of the wrapping member (15), and the first fixing blocks (16) on the two wrapping members (15) are connected by bolts.

8. The sealing structure for sealing an electric heating pipe according to claim 6, characterized in that: A second fixing block (20) is provided on the side outer wall of the wrapping member (15), and the inner wall of the second fixing block (20) is threadedly connected to a fastening threaded pin (14), one end of the fastening threaded pin (14) is fixedly mounted with a pressing block (28), and the other end is fixedly connected to a turntable (21).

9. The sealing structure for sealing an electric heating pipe according to claim 8, characterized in that: A sealing gasket (18) is bonded to the inner wall of the right-side wrapping piece (15).

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