CN213718254U - Electromagnetic heating roller - Google Patents
Electromagnetic heating roller Download PDFInfo
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- CN213718254U CN213718254U CN202022632760.8U CN202022632760U CN213718254U CN 213718254 U CN213718254 U CN 213718254U CN 202022632760 U CN202022632760 U CN 202022632760U CN 213718254 U CN213718254 U CN 213718254U
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- air inlet
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Abstract
The utility model discloses an electromagnetic heating roller, which comprises a heating guide disc, wherein a winding post and a roller shaft which are in an annular structure are arranged in the heating guide disc, and an electromagnetic coil is wound on the outer surface of the winding post; the winding post is provided with an air cooling device for cooling the electromagnetic coil and/or the winding post and/or the roll shaft. The utility model discloses set up on the wrapping post and be used for the cooling solenoid and/or the wrapping post and/or the air cooling plant of roller. The cooling effect of low-temperature gas is utilized to reduce the temperature of the electromagnetic coil, the winding post and the roller shaft, the stable temperature of the electromagnetic coil and the roller shaft is ensured, and the service life of the electromagnetic coil, the winding post and the roller shaft is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the electromagnetic heating roller of fibre draft aftertreatment, specifically speaking relates to an electromagnetic heating roller with air cooling device.
Background
The traditional heating mode of the fiber drafting hot roller is to use an electric heating wire, a carbon rod, an electric heating block and the like to be electrified and generate heat, and transmit the drafting roller of a guide disc needing to be heated through a heat conduction medium. Heating wire, electric heat piece. The maximum electric heat conversion efficiency of heaters such as carbon rods and the like is only 60-80%. Then the heat is transferred to the heating guide disc through the heat transfer medium, and the heat loss is serious. The electromagnetic heating is to directly generate electromagnetic induction eddy current on the guide disc made of magnetic conductivity materials by using the electromagnetic induction principle to generate heat, the electrothermal conversion efficiency is high, and the temperature distribution is uniform.
However, the high-frequency electric heating coil can generate heat in the process of generating high-frequency energy, and the heating guide disc can also transmit high temperature to the electromagnetic coil, so that the electromagnetic coil and the bearing are both at higher temperature, the aging and the damage of the electromagnetic coil are accelerated, the bearing is easy to deform, and the service life of the hot roller is greatly shortened.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in overcoming prior art's is not enough, provides an electromagnetic heating roller, sets up the forced air cooling unit and cools down to the roller on the wrapping post around establishing solenoid, guarantees the stabilizing temperature of roller, prolongs the life of wrapping post, roller.
In order to solve the technical problem, the utility model adopts the following basic concept:
an electromagnetic heating roller comprises a winding post with a ring structure,
a roller shaft is arranged in the winding post, an electromagnetic coil is wound on the outer surface of the winding post, and a heating guide disc made of magnetic conductive materials is sleeved outside the electromagnetic coil;
the winding post is provided with an air cooling device for cooling the electromagnetic coil and/or the winding post and/or the roll shaft.
Further, in the above-mentioned case,
the air cooling device comprises an air inlet channel and an air outlet channel which are communicated;
the air inlet channel is arranged inside the side wall of the winding post, and the gap between the winding post and the roll shaft forms the air outlet channel.
Further, in the above-mentioned case,
the air inlet channels are axially arranged inside the side wall of the wrapping post, a plurality of radially extending air outlet holes are formed in the inner side wall of the wrapping post corresponding to the air inlet channels, and the air outlet holes are communicated with the air inlet channels and the air outlet channels.
Further, in the above-mentioned case,
and the plurality of air inlet channels are uniformly arranged along the circumferential direction of the winding post.
Further, in the above-mentioned case,
a plurality of inlet channel is in along snake disk setting inside the lateral wall of wrapping post, correspond on the inside wall of wrapping post inlet channel department is equipped with a plurality of radially extending's venthole, the venthole intercommunication inlet channel with outlet channel.
Further, in the above-mentioned case,
the distance between two adjacent air outlet holes is gradually reduced along the airflow flowing direction;
and/or
The aperture of the plurality of air outlet holes is gradually increased along the airflow flowing direction.
Further, in the above-mentioned case,
the end of the wrapping post is provided with a fixing disc sleeved on the roller shaft, the fixing disc is provided with an air inlet and an air outlet which are communicated with the air inlet channel and the air outlet channel respectively, and the air inlet and the air outlet penetrate through the fixing disc respectively.
Further, in the above-mentioned case,
one side of the fixed disc, which is close to the winding post, is provided with an annular groove, and the annular groove is communicated with the air inlet channel and the air inlet respectively.
Further, in the above-mentioned case,
the heating guide disc is a double-layer structure consisting of an inner drum structure and an outer drum structure, one end of the heating guide disc far away from the fixed disc is provided with a bottom wall,
the winding post is sleeved on the inner barrel structure, the roller shaft is arranged in a hollow hole of the inner barrel structure,
a heat insulation device is sleeved between the electromagnetic coil and the inner barrel structure.
Further, in the above-mentioned case,
the inner surface of the outer barrel structure is provided with a heat conduction device.
After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has.
1. The utility model discloses set up on the wrapping post and be used for the cooling solenoid and/or the wrapping post and/or the air cooling plant of roller. The cooling effect of low-temperature gas is utilized to reduce the temperature of the electromagnetic coil, the winding post and the roller shaft, the stable temperature of the electromagnetic coil and the roller shaft is ensured, and the service life of the electromagnetic coil, the winding post and the roller shaft is prolonged.
2. The utility model discloses the mode that utilizes the cooling gas cooling has also strengthened at to a great extent the utility model discloses electromagnetic heating roller's security.
3. The utility model discloses the inside inlet channel that is used for making the cooling gas to pass through that sets up of lateral wall at the wrapping post realizes the cooling function to wrapping post, solenoid and roller on the basis that does not increase extra spare part.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic sectional view of an electromagnetic heating roller according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the assembly structure of the heating guide disc and the roller shaft;
FIG. 4 is a schematic view of the outer structure of the fixing plate;
FIG. 5 is a schematic view of the inner structure of the fixing plate;
FIG. 6 is a schematic cross-sectional view of the wrapping post;
in the figure: 10. heating the guide disc; 101. an outer tub structure; 102. an inner barrel structure; 20. a heat conducting device; 30. a thermal insulation device; 40. a roll shaft; 50. a winding post; 60. an air intake passage; 70. an air outlet; 80. fixing the disc; 90. an air outlet; 100. an air inlet; 110. an electromagnetic coil; 120. an air outlet channel; 130. an annular groove.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of the description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 6, the present invention provides an electromagnetic heating roller, which includes a heating guide disc 10, a winding post 50 and a roller shaft 40, which are in an annular structure, are arranged in the heating guide disc 10, and an electromagnetic coil 110 is wound around the outer surface of the winding post 50; the winding post 50 is provided with an air cooling means for cooling the electromagnetic coil 110 and/or the winding post 50 and/or the roller shaft 40.
Specifically, the electromagnetic heating roller is a heating roller that generates heat by generating an electromagnetic induction eddy current in the heating guide plate 10 made of a magnetic conductive metal material by using a changing magnetic field generated by energizing the electromagnetic coil 110. Generally, the winding post 50 and the roller shaft 40 are made of non-magnetic conductive materials, and when the electromagnetic coil 110 is energized to generate a changing magnetic field, the winding post 50 and the roller shaft 40 do not generate electromagnetic induction eddy current to generate heat.
However, since the electromagnetic coil 110, the winding post 50, and the roller shaft 40 are all disposed inside the heating guide 10, when the heating guide 10 made of a magnetic conductive material generates heat due to the electromagnetic induction eddy current, the heat is still transferred from the heating guide 10 to the electromagnetic coil 110, the winding post 50, and the roller shaft 40 due to the driving action of the temperature difference. After a while, the electromagnetic coil 110, the winding post 50 and the roller shaft 40 are all at a high temperature, which accelerates the aging and damage of the electromagnetic coil 110, resulting in easy deformation of the roller shaft 40 and greatly shortening the service life of the heating roller.
The utility model discloses set up on the wrapping post 50 and be used for the cooling solenoid 110 and/or wrapping post 50 and/or the air cooling plant of roller 40. The temperature of the electromagnetic coil 110, the winding post 50 and the roller shaft 40 is reduced by utilizing the cooling effect of the low-temperature gas, the stable temperature of the electromagnetic coil 110 and the roller shaft 40 is ensured, and the service life of the electromagnetic coil 110, the winding post 50 and the roller shaft 40 is prolonged.
Among the above-mentioned scheme, the mode that utilizes the cooling gas cooling has also strengthened at to a great extent the utility model discloses electromagnetic heating roller's security.
Further, as shown in fig. 3, the heating guide plate 10 has an inner-outer double-layer structure formed by an inner barrel structure 102 and an outer barrel structure 101, and has a bottom wall at one end and a fixing plate 80 at the other end.
The wrapping post 50 is sleeved on the inner barrel structure 102, and has a certain gap with the inner barrel structure 102. The roller shaft 40 is disposed in a hollow bore of the inner tub structure 102.
When the electromagnetic coil 110 is energized to generate a changing magnetic field, the cross-sectional area of the outer tub structure 101 is much larger than that of the inner tub structure 102, so that although the inner tub structure 102 also generates a certain amount of heat, the amount of heat is small. And the air cooling device arranged on the winding post 50 can also cool the inner barrel structure 102.
In some embodiments of the present invention, the inner surface of the outer tub structure 101 is provided with a heat conducting device 20.
Specifically, the copper material that has certain thickness of melt-spraying to the internal surface of outer bucket structure 101 of heating guide plate 10 is as heat conduction device 20, copper material and the inseparable seamless contact of heating guide plate 10 internal surface, because the copper material belongs to hot good conductor, improved the homogeneity of warming mill heating guide plate 10 temperature greatly.
In some embodiments of the present invention, as shown in fig. 1 and 2, a heat insulation device 30 is disposed between the electromagnetic coil 110 and the inner barrel structure 102 and sleeved outside the electromagnetic coil 110.
Specifically, the heat insulation device 30 is a ceramic cylinder capable of isolating the high temperature of the outer tub structure 101 of the heating guide disc 10 and allowing the high-frequency energy magnetic field generated by the electromagnetic coil 110 to pass through, and has a high-frequency flux rate of 100% and a heat insulation effect of 60-70%.
Thus, the remaining 30-40% of the heat not blocked by the heat insulation device 30 is also carried away by the cooling air under the cooling action of the air cooling device, so that the temperatures of the winding post 50, the electromagnetic coil 110 and the roller shaft 40 are stabilized.
In some embodiments of the present invention, the air cooling device includes an air inlet channel 60 and an air outlet channel 120; the air inlet passage 60 is provided inside the sidewall of the winding post 50, and the gap between the winding post 50 and the roller shaft 40 forms the air outlet passage 120.
In detail, as shown in fig. 1 to 6, since the winding post 50 having the ring-shaped structure has a certain wall thickness, an intake passage 60 for passing the cooling gas is provided inside the side wall of the winding post 50. The cooling function of the winding post 50, the electromagnetic coil 110 and the roll shaft 40 is realized on the basis of not adding additional parts.
Specifically, the cooling gas with a lower temperature enters the air inlet channel 60 formed in the side wall of the winding post 50 with the annular structure, so that the cooling effect on the winding post 50 can be achieved firstly, and then the cooling effect on the electromagnetic coil 110 wound on the winding post 50 can be achieved correspondingly. After the cooling air enters the gap between the winding post 50 and the roller shaft 40 from the air inlet passage 60, that is, the air outlet passage 120, the cooling air cools the roller shaft 40 during the discharging process.
In the above scheme, the cooling air absorbs heat from the winding post 50, the electromagnetic coil 110 and the roller shaft 40 during the processes of entering through the air inlet channel 60 and discharging through the air outlet channel 120, so that the temperatures of the winding post 50, the electromagnetic coil 110 and the roller shaft 40 are not too high to cause damage.
In a further scheme, as shown in fig. 6, a plurality of air inlet channels 60 are axially disposed inside a side wall of the winding post 50, a plurality of radially extending air outlet holes 70 are disposed on an inner side wall of the winding post 50 corresponding to the air inlet channels 60, and the air outlet holes 70 communicate the air inlet channels 60 and the air outlet channels 120.
In detail, the air inlet channels 60 are arranged in the axial direction inside the side wall of the winding post 50, and each air inlet channel 60 is provided with an air outlet 70 along the radial direction, and the cooling air from the air outlet 70 is blown to the roller shaft 40 and exhausted from the air outlet channel 120 between the outer surface of the roller shaft 40 and the inner surface of the winding post 50 to take away heat.
In a preferred embodiment, the plurality of air inlet channels 60 are uniformly arranged along the circumferential direction of the winding post 50, so that the cooling effect of the cooling gas on the winding post 50, the electromagnetic coil 110 and the roller shaft 40 is more uniform, and the local overheating or overcooling condition is avoided.
In the preferred embodiment, four intake passages 60 are provided.
In another alternative, the air inlet channels 60 are disposed inside the side wall of the winding post 50 along a serpentine shape, and a plurality of radially extending air outlet holes 70 are disposed on the inner side wall of the winding post 50 corresponding to the air inlet channels 60, and the air outlet holes 70 communicate the air inlet channels 60 and the air outlet channels 120.
In the above scheme, on one hand, the serpentine air inlet channel 60 can make the cooling effect of the cooling gas on the winding post 50, the electromagnetic coil 110 and the roller shaft 40 more uniform, and on the other hand, the length of the air inlet channel 60 is increased, so that the process of the cooling gas is increased, and the cooling effect can be further improved.
In a further scheme, no matter the air inlet channel 60 extends axially or the air inlet channel 60 extends in a serpentine shape, a plurality of air outlet holes 70 are arranged along the direction of the air inlet channel 60, so that the distance between two adjacent air outlet holes 70 is gradually reduced along the airflow flowing direction.
In the above-mentioned scheme, because along with the flow of cooling gas in inlet channel 60, the temperature of its upper and lower reaches has must have a little difference, consequently, the utility model discloses set up the interval of venthole 70 into the little structure in the big low reaches in upper reaches, make the venthole 70 that is located the comparatively airflow direction upstream of the venthole 70 quantity in airflow direction low reaches be in large quantity, spun cooling gas is also more, makes the cooling effect of cooling gas to winding post 50, solenoid 110 and roller 40 more even.
Alternatively or in combination, the apertures of the plurality of air outlets 70 gradually increase along the airflow direction, so that more cooling air is ejected from the air outlets 70 located downstream in the airflow direction than from the air outlets 70 located upstream in the airflow direction, and the cooling effect of the cooling air on the winding post 50, the electromagnetic coil 110 and the roller shaft 40 is more uniform.
In some embodiments of the present invention, as shown in fig. 4 and 5, the end of the wrapping post 50 is provided with a fixing plate 80 sleeved on the roller shaft 40, and the fixing plate 80 is provided with an air inlet 100 and an air outlet 90 respectively communicated with the air inlet channel 60 and the air outlet channel 120. The air inlet 100 and the air outlet 90 respectively penetrate the fixed disk 80.
Preferably, an annular groove 130 is formed at one side of the fixed disk 80 close to the winding post 50, and the annular groove 130 is respectively communicated with the air inlet passage 60 and the air inlet 100.
In detail, the fixed disk 80 is provided with an air inlet 100 communicated with the air inlet passage 60, the annular groove 130 is respectively communicated with the air inlet passage 60 and the air inlet 100, and the cooling gas passes through the air inlet 100, then passes through the air inlet passage 60, and finally passes through the air outlet passage 120 to blow toward the rotating roller shaft 40.
The gap between the outer surface of the roller shaft 40 and the inner surface of the winding post 50 forms an air outlet channel 120 for the cooling air, the top end of the air outlet channel 120 is connected with the air outlet 90 arranged on the fixed disk 80, and the cooling air flows into the air outlet channel 120 from the air outlet 70 of the air inlet channel 60 and flows out from the air outlet 90. During the flowing process, the cooling gas absorbs heat generated from the electromagnetic coil 110 wound on the surface of the winding post 50. The stable temperature of the electromagnetic coil 110 and the roll shaft 40 is ensured, and the service life of the electromagnetic coil 110, the winding post 50 and the roll shaft 40 is prolonged.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.
Claims (10)
1. An electromagnetic heating roller characterized in that: the heating device comprises a heating guide disc, wherein a winding post and a roller shaft which are in an annular structure are arranged in the heating guide disc, and an electromagnetic coil is wound on the outer surface of the winding post;
the winding post is provided with an air cooling device for cooling the electromagnetic coil and/or the winding post and/or the roll shaft.
2. An electromagnetically heated roller as claimed in claim 1, wherein:
the air cooling device comprises an air inlet channel and an air outlet channel which are communicated;
the air inlet channel is arranged inside the side wall of the winding post, and the gap between the winding post and the roll shaft forms the air outlet channel.
3. An electromagnetically heated roller as claimed in claim 2, wherein:
the air inlet channels are axially arranged inside the side wall of the wrapping post, a plurality of radially extending air outlet holes are formed in the inner side wall of the wrapping post corresponding to the air inlet channels, and the air outlet holes are communicated with the air inlet channels and the air outlet channels.
4. An electromagnetically heated roller as claimed in claim 3, wherein:
and the plurality of air inlet channels are uniformly arranged along the circumferential direction of the winding post.
5. An electromagnetically heated roller as claimed in claim 2, wherein:
a plurality of inlet channel is in along snake disk setting inside the lateral wall of wrapping post, correspond on the inside wall of wrapping post inlet channel department is equipped with a plurality of radially extending's venthole, the venthole intercommunication inlet channel with outlet channel.
6. An electromagnetically heated roller as claimed in any one of claims 3 to 5, wherein:
the distance between two adjacent air outlet holes is gradually reduced along the airflow flowing direction;
and/or
The aperture of the plurality of air outlet holes is gradually increased along the airflow flowing direction.
7. An electromagnetically heated roller as claimed in any one of claims 2 to 5, wherein:
the end of the wrapping post is provided with a fixing disc sleeved on the roller shaft, the fixing disc is provided with an air inlet and an air outlet which are communicated with the air inlet channel and the air outlet channel respectively, and the air inlet and the air outlet penetrate through the fixing disc respectively.
8. An electromagnetically heated roller as claimed in claim 7, wherein:
one side of the fixed disc, which is close to the winding post, is provided with an annular groove, and the annular groove is communicated with the air inlet channel and the air inlet respectively.
9. An electromagnetically heated roller as claimed in claim 7, wherein:
the heating guide disc is a double-layer structure consisting of an inner drum structure and an outer drum structure, one end of the heating guide disc far away from the fixed disc is provided with a bottom wall,
the winding post is sleeved on the inner barrel structure, the roller shaft is arranged in a hollow hole of the inner barrel structure,
a heat insulation device is sleeved between the electromagnetic coil and the inner barrel structure.
10. An electromagnetically heated roller as claimed in claim 9, wherein:
the inner surface of the outer barrel structure is provided with a heat conduction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022632760.8U CN213718254U (en) | 2020-11-13 | 2020-11-13 | Electromagnetic heating roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022632760.8U CN213718254U (en) | 2020-11-13 | 2020-11-13 | Electromagnetic heating roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213718254U true CN213718254U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022632760.8U Active CN213718254U (en) | 2020-11-13 | 2020-11-13 | Electromagnetic heating roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213718254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114760725A (en) * | 2022-06-15 | 2022-07-15 | 南通华尔成电磁加热辊有限公司 | Steady-flow electromagnetic heating device and electromagnetic heating roller |
-
2020
- 2020-11-13 CN CN202022632760.8U patent/CN213718254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114760725A (en) * | 2022-06-15 | 2022-07-15 | 南通华尔成电磁加热辊有限公司 | Steady-flow electromagnetic heating device and electromagnetic heating roller |
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