CN215581774U

CN215581774U - Open-close type electromagnetic induction heating ring

Info

Publication number: CN215581774U
Application number: CN202122057217.4U
Authority: CN
Inventors: 杨蒙
Original assignee: Guangdong Guoheng Plastic Development Co ltd
Current assignee: Guangdong Guoheng Plastic Development Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-01-18
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses an open-close type electromagnetic induction heating ring, which comprises an upper semi-annular ring and a lower semi-annular ring which are in open-close design; the upper semi-annular ring comprises a first upper connecting part and a second upper connecting part; the lower semi-annular ring comprises a first lower connecting part and a second lower connecting part; the first end of the first upper connecting part is hinged with the first end of the second upper connecting part; the first end of the first lower connecting part is hinged with the first end of the second lower connecting part; the second end of the second upper connecting part and the second end of the second lower connecting part can be locked and closed through a locking assembly; and the upper semi-annular ring and the lower semi-annular ring are respectively provided with an upper connecting sheet and a lower connecting sheet. The heating ring can be directly sleeved on the pipe fitting to perform induction heating on the metal layer in the pipe fitting, so that the heating ring can be used in a narrow space.

Description

Open-close type electromagnetic induction heating ring

Technical Field

The utility model relates to the technical field of electromagnetic induction heating, in particular to an open-close type electromagnetic induction heating ring.

Background

Based on the Faraday electromagnetic induction principle, the electromagnetic induction heating technology is a method for improving alternating current frequency, and is a technology which enables alternating current with high speed change to flow through a coil to generate alternating magnetic lines, the magnetic lines penetrate through a heating object to form a loop, and induced current (namely eddy current) is generated in the cross section of the loop and forms a heat effect, so that a heating workpiece is rapidly heated, and the purpose of heating metal or other materials indirectly contacted with the metal is achieved.

The inventor of the present invention has previously applied an electromagnetic induction heater of CN202799232U, an electromagnetic induction heating device of CN202738148U and an electromagnetic induction energy-gathering heating device of CN203675355U to search for the manufacturing principle of a low inductance (when the number of turns of an induction coil is limited) electromagnetic induction coil (load), mainly by adopting an isolation transformer or a multi-stage series resonant circuit to form a load inductance with the induction coil and matching the whole load inductance with an electromagnetic power supply, therefore, the whole load inductance is improved by the induction coil with low inductance (for example, 3-7 turns, the inductance is 3.0-6 muH) because of the series connection of the isolation transformer and the multistage series resonance circuit (the specified inductance can be obtained by adjusting the turn ratio of the isolation transformer, and the requirement of the circuit design of the electromagnetic power generator is correspondingly reduced), and the induction heating work of the low-inductance coil of the electromagnetic power generator becomes possible.

At present, some practitioners have also conducted beneficial research on the manufacture of induction coils, such as a steel-plastic composite pipe electromagnetic heating welding fixture of CN106493958B, a steel-plastic composite pipe electromagnetic heating welding fixture of CN106493959B, and a plastic pipe electromagnetic heating device of CN 204451200U. In fact, in the field of installation of steel-plastic composite pipes, in the installation of indoor pipelines, the core problem often faced is not a heating means, but because the pipelines need to be installed by being attached to a wall or even embedded into a wall, if the outer diameter of a heating clamp is too large, the installation position is too narrow, and no space for placing the clamp exists, the heating clamp basically has no installation possibility or only can be reluctant, and the installation risk (such as only strongly snapping pipes) is faced, and the efficiency is not high. The induction coil of the existing heating clamp is generally completely arranged in the shell, so that the size of the heating clamp at the position of the induction coil is increased by the shell, the heating clamp cannot be placed in a narrow space, and the use is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model aims to provide an open-close type electromagnetic induction heating ring which is simple and reasonable in structure, has an open-close design and is not provided with an upper semi-annular ring and a lower semi-annular ring of a shell, so that the outer diameter of the heating ring is smaller, the heating ring can be directly used for being sleeved on a double-hot-melting pipe fitting corresponding to a steel-plastic composite pipe to heat a metal layer in the steel-plastic composite pipe, namely the heating ring is equivalent to an induction coil, and further the heating ring can be used in a narrow space position, so that the applicability is improved; simultaneously, the heating ring can also be used for the dismouting to change.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

an open-close type electromagnetic induction heating ring comprises an upper semi-annular ring and a lower semi-annular ring which are in open-close design; the upper semi-annular ring comprises a first upper connecting part and a second upper connecting part; the lower semi-annular ring comprises a first lower connecting part and a second lower connecting part; the first end of the first upper connecting part is hinged with the first end of the second upper connecting part; the first end of the first lower connecting part is hinged with the first end of the second lower connecting part; the second end of the second upper connecting part and the second end of the second lower connecting part can be locked and closed through a locking assembly; and the upper semi-annular ring and the lower semi-annular ring are respectively provided with an upper connecting sheet and a lower connecting sheet which correspond to each other.

For the additional structure of the above technical scheme, the following scheme is also included:

as a specific example, the upper connecting piece is arranged on an outer side surface of the first upper connecting portion; the lower connecting piece is arranged on the outer side surface of the first lower connecting part.

Further, the upper connecting piece is arranged on the outer side surface of the second end of the first upper connecting part; the lower connecting piece is arranged on the outer side surface of the second end of the first lower connecting part; the upper connecting sheet and the lower connecting sheet extend transversely.

Furthermore, an upper step is formed between the bottom surface of the upper connecting sheet and the outer side surface of the first upper connecting part; and a lower step is formed between the top surface of the lower connecting piece and the outer side surface of the first lower connecting part.

Furthermore, a lock hole penetrating to the outer end to form an opening structure is respectively arranged on the upper connecting sheet and the lower connecting sheet.

As a specific embodiment, an upper locking plate is arranged on the outer side surface of the second end of the second upper connecting part; a lower locking plate is arranged on the outer side surface of the second end of the second lower connecting part; and the upper locking plate and the lower locking plate are respectively provided with a through hole correspondingly matched with the locking component.

As a specific embodiment, a plurality of heat dissipation convex strips are respectively arranged on the outer side surface of the upper semi-annular ring and the outer side surface of the lower semi-annular ring.

As a specific embodiment, when the upper half-ring and the lower half-ring are locked together, the end surface of the first end of the first upper connecting portion is in interference fit with the end surface of the first end of the second upper connecting portion, the end surface of the first end of the first lower connecting portion is in interference fit with the end surface of the first end of the second lower connecting portion, and the end surface of the second end of the second upper connecting portion is in interference fit with the end surface of the second end of the second lower connecting portion.

As a specific embodiment, the diameter of a through hole formed by closing the upper semi-annular ring and the lower semi-annular ring is 24mm-138 mm.

The utility model has the beneficial effects that:

the induction heating coil is simple and reasonable in structure, is actually equivalent to a single-turn induction coil, is provided with the upper semi-annular ring and the lower semi-annular ring which are in an open-close type design and are not provided with the shell, the outer diameter of the heating ring can be smaller than that of the traditional induction coil with the shell, and the heating ring can be directly sleeved on the pipe fitting to be used for induction heating of the metal layer in the pipe fitting, so that the heating ring can be placed in a narrow installation position, and the applicability is improved; simultaneously, can make the heating ring can also be used for the dismouting to change through the setting of upper connecting piece and lower connecting piece to use the heating ring of different sizes on different pipe fittings, moreover, upper connecting piece and lower connecting piece still have the effect that is used for leading-in derivation electric current.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a first schematic structural view of the present invention in use;

fig. 3 is a schematic structural diagram two of the present invention in use.

Reference numerals:

1. an upper semi-annular ring; 11. a first upper connecting portion; 111. a first end of the first upper connection portion; 112. a second end of the first upper connection portion; 12. a second upper connecting portion; 121. a first end of the second upper connection portion; 122. a second end of the second connection portion; 2. a lower semi-annular ring; 21. a first lower connecting portion; 211. a first end of the first lower connection portion; 212. a second end of the first lower connecting portion; 22. a second lower connecting portion; 221. a first end of a second lower connecting portion; 222. a second end of the second lower connecting portion; 3. an upper connecting sheet; 4. a lower connecting sheet; 5. a locking assembly; 6. an upper step; 7. descending a step; 8. a lock hole; 9. locking plates are arranged; 10. a locking plate is arranged; 100. heat dissipation convex strips; 200. a through hole; 300. a handle housing; 301. a magnetic ring; 302. a coil; 303. a conductive connecting sheet; 304. locking the bolt; 305. a nut; 306. an insulating sheet.

Detailed Description

The utility model will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the utility model.

As shown in fig. 1, an open-close type electromagnetic induction heating ring comprises an upper semi-annular ring 1 and a lower semi-annular ring 2 which are in open-close design; the upper half annular ring 1 comprises a first upper connecting part 11 and a second upper connecting part 12; the lower semi-annular ring 2 comprises a first lower connecting part 21 and a second lower connecting part 22; the first end 111 of the first upper connecting part is hinged with the first end 121 of the second upper connecting part; the first end 211 of the first lower connecting portion is hinged to the first end 221 of the second lower connecting portion; the second end 122 of the second upper connecting portion and the second end 222 of the second lower connecting portion can be locked together by a locking assembly 5; the upper semi-annular ring 1 and the lower semi-annular ring 2 are respectively provided with an upper connecting sheet 3 and a lower connecting sheet 4 which correspond to each other. The induction heating pipe fitting is simple and reasonable in structure, the upper semi-annular ring 1 and the lower semi-annular ring 2 which are designed in an opening-closing mode and are not provided with a shell are arranged, the outer diameter of the heating ring can be made small, the heating ring can be directly sleeved on the pipe fitting to be used for induction heating of a metal layer in the pipe fitting, and therefore the heating ring can be placed in a narrow installation position, and the applicability is improved; meanwhile, the heating rings can be used for dismounting and replacing through the arrangement of the upper connecting sheet 3 and the lower connecting sheet 4, so that the heating rings with different sizes can be used on different pipe fittings, and the upper connecting sheet 3 and the lower connecting sheet 4 also have the function of leading in and leading out current; the two hinged positions in the structure can be conveniently used for opening or closing the upper semi-annular ring 1 and the lower semi-annular ring 2, and then one side of the heating ring can be locked by the locking assembly 5;

wherein, the upper connecting sheet 3 is arranged on the outer side surface of the first upper connecting part 11; the lower connecting piece 4 is provided on the outer side surface of the first lower connecting portion 21. More specifically, the upper connecting piece 3 is provided on the outer side surface of the second end 112 of the first upper connecting portion; the lower connecting piece 4 is arranged on the outer side surface of the second end 212 of the first lower connecting part; the upper connecting sheet 3 and the lower connecting sheet 4 both extend transversely.

An upper step 6 is formed between the bottom surface of the upper connecting sheet 3 and the outer side surface of the first upper connecting part 11; a lower step 7 is formed between the top surface of the lower connecting piece 4 and the outer side surface of the first lower connecting portion 12.

And the upper connecting piece 3 and the lower connecting piece 4 are respectively provided with a locking hole 8 which penetrates through to the outer end to form an opening structure.

An upper locking piece 9 is arranged on the outer side surface of the second end 122 of the second upper connecting part; a lower locking plate 10 is arranged on the outer side surface of the second end 222 of the second lower connecting part; the upper locking piece 9 and the lower locking piece 19 are respectively provided with a through hole which is correspondingly matched with the locking component 5. Specifically, the locking assembly 5 includes a bolt and a nut, and the bolt is connected to the nut after passing through two through holes to form a locking structure. Through the above arrangement, the locking and the conduction of one side of the heating ring can be conveniently realized.

A plurality of heat dissipation ribs 100 are respectively disposed on the outer side surface of the upper half ring 1 and the outer side surface of the lower half ring 2, and in this embodiment, the number of the heat dissipation ribs 100 is a plurality of heat dissipation ribs which are uniformly distributed. By arranging the heat dissipation convex strips 100, the rigidity of the heating ring can be enhanced, and meanwhile, the heat dissipation area can be conveniently increased, so that the heat dissipation effect is improved.

When the upper half ring 1 and the lower half ring 2 are locked in a closed mode, the end face of the first end 111 of the first upper connecting portion is in interference fit with the end face of the first end 121 of the second upper connecting portion, the end face of the first end 211 of the first lower connecting portion is in interference fit with the end face of the first end 221 of the second lower connecting portion, the end face of the second end 122 of the second upper connecting portion is in interference fit with the end face of the second end 222 of the second lower connecting portion, and therefore the fact that the conductive area of the heating ring is large enough can be guaranteed, and the conduction is stable.

The diameter of the through hole 11 formed between the upper semi-annular ring 1 and the lower semi-annular ring 2 is 24mm-138 mm. Specifically, the diameter of the through-hole 11 is generally 28.5. + -.2 mm, 35. + -.3 mm, 42. + -.3.5 mm, 55. + -.4 mm, 65. + -.4 mm and 79. + -.4 mm in order to cater for different sizes of pipes.

Preferably, the material of the heating ring is selected from gold, silver and copper, and is preferably made of copper for cost reasons.

Preferably, as shown in fig. 1, the hinge connection between the first upper connecting portion 11 and the second upper connecting portion 12 and the hinge connection between the first lower connecting portion 21 and the second lower connecting portion 22 form a hinge structure through relative sliding connection between at least two hollow cylinders.

The principle of use of the utility model is described below in connection with fig. 2 and 3, in order to understand the utility model:

when the utility model is used, the utility model is matched with the handle part for use. The handle part comprises a handle shell 300, a magnetic ring 301 arranged in the handle shell 300, a coil 302 which is wound on the magnetic ring 301 and two ends of which are used for connecting an electromagnetic induction heating power supply, and a conductive connecting sheet 303 which is sleeved on the magnetic ring 301 and two ends of which extend out of the handle shell 300; a through hole is respectively formed at both ends of the conductive connection piece 303, and a lock bolt 304 and a nut 305 corresponding to the through hole are further provided, and an insulation piece 306 is further provided between both ends of the conductive connection piece 303 to prevent short circuit. When the utility model is used, firstly, the heating ring with the corresponding size to be used is selected, the locking component 5 is opened, then the upper semi-annular ring 1 and the lower semi-annular ring 2 are opened and sleeved on the corresponding steel-plastic composite pipe and the double hot-melting pipe fitting to be welded, then the upper semi-annular ring 1 and the lower semi-annular ring 2 are closed, and then the locking component 5 is locked, so that one side of the heating ring is locked; then, both ends of the conductive connection piece 303 are inserted into the upper step 6 and the lower step 7, respectively, so that both ends of the locking bolt 304 are also inserted into the two locking holes 8, respectively, and the outer end of the insulation sheet 306 is inserted between the second end 112 of the first upper connection portion and the second end 212 of the first lower connection portion, respectively, to prevent short circuit; the heating ring can be conveniently disassembled and assembled by the design, so that the heating rings with different sizes can be conveniently replaced; then, a nut 305 is screwed on the locking bolt 304, so that the upper connecting sheet 3 is connected with one end of the conductive connecting sheet 303, and the lower connecting sheet 4 is connected with the other end of the conductive connecting sheet 303, so that the conduction is conveniently communicated, and the locking of the other side of the heating ring is completed; after the electromagnetic induction heating power supply is switched on, current is induced to the conductive connecting sheet 303 and the heating ring through the coil 3 and the magnetic ring 2, so that a magnetic field is generated, eddy current is generated inside a metal layer inside the steel-plastic composite pipe, the temperature of the metal layer is increased, and when the metal temperature reaches the melting temperature of plastic coated on the metal outer layer, the plastic begins to melt and the steel-plastic composite pipe and the double hot-melt pipe are tightly welded together.

The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. An open-close type electromagnetic induction heating ring is characterized in that:

comprises an upper semi-annular ring and a lower semi-annular ring which are in an open-close design; the upper semi-annular ring comprises a first upper connecting part and a second upper connecting part; the lower semi-annular ring comprises a first lower connecting part and a second lower connecting part; the first end of the first upper connecting part is hinged with the first end of the second upper connecting part; the first end of the first lower connecting part is hinged with the first end of the second lower connecting part; the second end of the second upper connecting part and the second end of the second lower connecting part can be locked and closed through a locking assembly; and the upper semi-annular ring and the lower semi-annular ring are respectively provided with an upper connecting sheet and a lower connecting sheet which correspond to each other.

2. The split electromagnetic induction heating ring according to claim 1, wherein:

the upper connecting sheet is arranged on the outer side surface of the first upper connecting part; the lower connecting piece is arranged on the outer side surface of the first lower connecting part.

3. The split electromagnetic induction heating ring according to claim 2, wherein:

the upper connecting piece is arranged on the outer side surface of the second end of the first upper connecting part; the lower connecting piece is arranged on the outer side surface of the second end of the first lower connecting part; the upper connecting sheet and the lower connecting sheet extend transversely.

4. The split electromagnetic induction heating ring according to claim 3, wherein:

an upper step is formed between the bottom surface of the upper connecting piece and the outer side surface of the first upper connecting part; and a lower step is formed between the top surface of the lower connecting piece and the outer side surface of the first lower connecting part.

5. The split electromagnetic induction heating ring according to claim 3, wherein:

and the upper connecting sheet and the lower connecting sheet are respectively provided with a lock hole which penetrates through the outer end to form an opening structure.

6. The split electromagnetic induction heating ring according to claim 1, wherein:

an upper locking plate is arranged on the outer side surface of the second end of the second upper connecting part; a lower locking plate is arranged on the outer side surface of the second end of the second lower connecting part; and the upper locking plate and the lower locking plate are respectively provided with a through hole correspondingly matched with the locking component.

7. The split electromagnetic induction heating ring according to claim 1, wherein:

the outer side surface of the upper semi-annular ring and the outer side surface of the lower semi-annular ring are respectively provided with a plurality of heat dissipation convex strips.

8. The split electromagnetic induction heating ring according to claim 1, wherein:

the first half-ring with when the closed locking of half-ring down, the terminal surface of the first end of connecting portion on the first with the terminal surface interference laminating of the first end of connecting portion on the second, the terminal surface of the first end of connecting portion under the first with the terminal surface interference laminating of the first end of connecting portion under the second, the terminal surface of the second end of connecting portion on the second with the terminal surface interference laminating of the second end of connecting portion under the second.

9. The split electromagnetic induction heating ring according to claim 1, wherein:

the diameter of a through hole formed by closing the upper semi-annular ring and the lower semi-annular ring is 24mm-138 mm.