CN213847061U - Single-thread type silicon carbide rod electric heating element - Google Patents
Single-thread type silicon carbide rod electric heating element Download PDFInfo
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- CN213847061U CN213847061U CN202120001379.3U CN202120001379U CN213847061U CN 213847061 U CN213847061 U CN 213847061U CN 202120001379 U CN202120001379 U CN 202120001379U CN 213847061 U CN213847061 U CN 213847061U
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Abstract
The utility model provides a single thread type silicon carbon rod electric heating element, which comprises a body, the body comprises a heating part positioned at the middle part and a cold end connected at the two ends of the heating part through welding, and also comprises a connecting sleeve, the outer peripheral surface of the cold end close to the end part is provided with an external thread, the surface of the external thread is provided with an aluminum layer, the connecting sleeve is formed with a cylindrical connecting cavity with one side open, the side wall of the connecting cavity is evenly provided with a plurality of contraction joints at intervals, the contraction joints extend from the opening position of the connecting cavity to the bottom of the connecting cavity, the inner peripheral surface of the connecting cavity is provided with an internal thread, the connecting sleeve is in threaded connection with the end part of the cold end, the contraction joints are arranged so that the internal thread of the connecting sleeve can be fully contacted with the external thread of the cold end under the effect of a clamp, thereby increasing the contact area of the connecting sleeve and the cold end, thereby avoiding the phenomenon of damaging the silicon carbide rod caused by poor contact.
Description
Technical Field
The utility model relates to a elema technical field, concretely relates to single screw thread type elema electric heating element.
Background
The silicon-carbon rod is a rod-shaped or tubular non-metal high-temperature electric heating element which is made by using high-purity silicon carbide as a main raw material, processing and preparing a blank according to a certain material ratio, and carrying out high-temperature silicification recrystallization sintering at 2200 ℃ and has the characteristics of high service temperature, high resistance to high temperature, oxidation, corrosion, fast temperature rise, long service life, small high-temperature deformation and the like, and has good chemical stability.
The temperature controller is matched with an automatic electric control system, can obtain accurate constant temperature, and can automatically adjust the temperature according to the requirements of the production process. The silicon carbide rod is used for heating, so that the heating is convenient, safe and reliable. The electric heating element is widely applied to the high-temperature fields of electronics, magnetic materials, powder metallurgy, ceramics, glass, semiconductors, analysis and test, scientific research and the like, and becomes a tunnel kiln, a roller kiln, a glass kiln, a vacuum furnace, a muffle furnace, a smelting furnace and various heating devices.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present application provides a single thread type silicon carbide rod electric heating element, wherein a connecting sleeve is sleeved at a cold end of a silicon carbide rod, a connecting terminal is arranged on the connecting sleeve, contraction joints are uniformly arranged on a circumferential side wall of the connecting sleeve at intervals, threads which are matched and connected are arranged on an outer circumferential surface of the cold end and an inner circumferential surface of the connecting sleeve, and an aluminum layer is sprayed on a thread surface of the cold end, so that the connecting sleeve is screwed at the end of the cold end through the threads, is clamped at the periphery of the connecting sleeve through a hoop, and is communicated with a power supply through the connecting terminal; can also avoid adapter sleeve and cold junction not hard up through threaded connection's mode, thereby set up the contraction joint and can make the inner peripheral surface of adapter sleeve and the outer peripheral face full contact of cold junction under the effect of clamp, increase the area of contact of adapter sleeve and cold junction from this to avoid the phenomenon of the damage elema that leads to because of contact failure.
The utility model provides a single thread type silicon carbon rod electric heating element, which comprises a body, the body comprises a heating part positioned at the middle part and a cold junction connected at the two ends of the heating part through welding, and also comprises a connecting sleeve, the cold junction is provided with an external thread on the outer peripheral surface close to the end part, the surface of the external thread is provided with an aluminum layer, the connecting sleeve is formed with a cylindrical connecting cavity with one side open, a plurality of contraction joints are evenly arranged on the side wall of the connecting cavity at intervals, the contraction joints extend from the opening position of the connecting cavity to the bottom of the connecting cavity, the inner peripheral surface of the connecting cavity is provided with an internal thread, the connecting sleeve is connected at the end part of the cold junction in a thread way, each thread side surface of the external thread can be contacted with the thread side surface of the internal thread, the thread top of the internal thread can be contacted with the thread bottom of the external thread, the thread bottom of the internal thread can be in contact with the thread bottom of the external thread.
Furthermore, the cold end is provided with a cylindrical inner cavity coaxial with the outer peripheral surface, an aluminum layer is arranged on the inner peripheral surface of the cylindrical inner cavity, a plurality of elastic metal sheets are arranged in the connecting cavity, each elastic metal sheet comprises a first section which extends outwards, the end parts of the first sections are located on the same circumference, the end parts can be in contact with the inner peripheral surface of the cylindrical inner cavity, the circumference passes through the axis of the connecting cavity, and the radius of the circumference is larger than that of the cylindrical inner cavity.
Furthermore, the elastic metal sheet further comprises a second section connected with the bottom, the second section surrounds the center of the connecting cavity and is arranged at intervals, and the other end of the second section is connected with the first section.
Furthermore, the first section extends from the part connected with the second section to the direction close to the bottom.
Further, the cross section of the end part is in a circular arc shape.
Furthermore, the elastic metal sheet is made of copper and aluminum.
Furthermore, one end, far away from the body, of the connecting sleeve is provided with a wiring terminal.
The utility model provides a local quench device of medical oncology has following beneficial effect.
1. The connecting sleeve is sleeved at the end part of the cold end of the silicon carbide rod, the connecting sleeve is provided with a connecting terminal, contraction joints are uniformly arranged on the circumferential side wall of the connecting sleeve at intervals, threads which are matched and connected are arranged on the outer circumferential surface of the cold end and the inner circumferential surface of the connecting sleeve, and an aluminum layer is sprayed on the surface of the thread of the cold end, so that the connecting sleeve is screwed at the end part of the cold end through the threads, then is clamped at the periphery of the connecting sleeve through a hoop and is communicated with a power supply through the connecting; can also avoid adapter sleeve and cold junction not hard up through threaded connection's mode, thereby set up the contraction joint and can make the inner peripheral surface of adapter sleeve and the outer peripheral face full contact of cold junction under the effect of clamp, increase the area of contact of adapter sleeve and cold junction from this to avoid the phenomenon of the damage elema that leads to because of contact failure.
2. Through connecting the intracavity portion and setting up the elastic metal piece, set up cylindrical inner chamber at the cold junction to set up the aluminium lamination on the inner peripheral surface of inner chamber, thereby when being connected adapter sleeve and cold junction, the tip of elastic metal piece also can contact with the inner peripheral surface of cold junction, further improves the area of contact of adapter sleeve and cold junction, guarantees the circular telegram effect.
3. Through the first section with the elastic metal sheet to the direction that is close to the bottom surface extends the setting, can play the guide effect when establishing the adapter sleeve at the cold junction, avoid the elastic metal sheet to support and lean on the tip at the cold junction, avoid the jamming.
4. The cross section of the end part of the first section of the elastic metal sheet is arranged to be arc-shaped, so that the contact area between the end part of the elastic metal sheet and the inner peripheral surface of the cold end cylindrical inner cavity is guaranteed to be constant all the time when the elastic metal sheet deforms, and the conductive effect is guaranteed.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a single-thread silicon carbide rod electric heating element in the prior art.
Fig. 2 is a schematic view of an overall structure of a single-thread silicon carbide rod electric heating element according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a local enlarged structure of a single-thread silicon carbide rod electric heating element provided by the present invention.
Fig. 4 is a schematic structural view of a connecting sleeve in a single-thread silicon carbide rod electric heating element provided by the utility model.
Description of the drawings: the heating device comprises a body 1, a heating part 11, a cold end 101, an external thread 1010, a connecting sleeve 2, a connecting cavity 22, a contraction joint 20, a bottom 25, an internal thread 221, an elastic metal sheet 24, a first section 241, an end part 242 and a second section 240.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, for the structural schematic diagram of single thread type silicon carbide rod among the prior art, including body 1, body 1 includes heating portion 11 in the middle of and is located the cold junction 101 at both ends, in the use of reality, makes cold junction 101 be connected with the aluminium strip, and is fixed through the clamp, realizes the electricity and connects, and the bad condition is connected with the cold junction to aluminium strip can appear usually to this kind of connected mode, and the wiring is bad can lead to forming the phenomenon of striking an arc after the circular telegram, makes whole silicon carbide rod scrap.
The utility model provides a single thread type silicon carbon rod electric heating element, refer to fig. 2-4, as a specific implementation mode, it includes body 1 the body 1 includes heating portion 11 that is located the middle part and the cold junction 101 of welding connection at heating portion 11 both ends, still includes adapter sleeve 2, cold junction 101 is close to and is provided with external screw thread 1010 on the outer peripheral face of tip, external screw thread 1010 is provided with the aluminium lamination on the surface, adapter sleeve 2 is formed with one side open-ended cylindrical connection chamber 22, even interval is provided with a plurality of shrinkage joints 20 on the lateral wall of connection chamber 22, shrinkage joint 20 extends the setting from the open position of connection chamber 22 to the bottom 25 of connection chamber 22, be provided with internal thread 221 on the inner peripheral face of connection chamber 22, adapter sleeve 2 threaded connection is in the tip of cold junction 101, and every thread side of external screw thread 1010 all can with the thread side of internal thread 221 contacts, the top of the internal thread 221 can contact the bottom of the external thread 1010, and the bottom of the internal thread 221 can contact the bottom of the external thread 1010. As a preferred embodiment, the tops and bottoms of the internal thread and the external thread are both arranged in an arc shape, in the actual use process, a connecting sleeve is sleeved at the end part of the cold end of the silicon carbide rod, contraction joints are uniformly arranged on the circumferential side wall of the connecting sleeve at intervals, threads which are matched and connected are arranged on the outer circumferential surface of the cold end and the inner circumferential surface of the connecting sleeve, the top end and the bottom end of each thread are arranged in an arc shape, an aluminum layer is sprayed on the surface of the thread of the cold end, the connecting sleeve is screwed at the end part of the cold end through the threads and then clamped at the periphery of the connecting sleeve through a hoop, and one end, far away from the body 1, of the connecting sleeve 2 is provided with a connecting terminal which is communicated with a power supply through the connecting terminal; can also avoid adapter sleeve and cold junction not hard up through threaded connection's mode, thereby set up the contraction joint and can make the inner peripheral surface of adapter sleeve and the outer peripheral face full contact of cold junction under the effect of clamp, increase the area of contact of adapter sleeve and cold junction from this to avoid the phenomenon of the damage elema that leads to because of contact failure.
Further, referring to fig. 3 and 4, in order to further ensure the reliability of the electrical connection between the connection sleeve 2 and the cold end, the cold end 101 is provided with a cylindrical inner cavity coaxial with the outer peripheral surface, an aluminum layer is provided on the inner peripheral surface of the cylindrical inner cavity, a plurality of elastic metal sheets 24 are provided in the connection cavity 22, each elastic metal sheet 24 includes a first section 241 extending outwards, end portions 242 of the first sections 241 are located on the same circumference, the end portions 242 can contact with the inner side wall of the cylindrical inner cavity, the circumference passes through the axis of the connection cavity, and the radius of the circumference is greater than that of the cylindrical inner cavity. Through this kind of mode of setting to when being connected adapter sleeve and cold junction, the tip of elastic metal piece also can contact with the inner peripheral surface of cold junction, further improves the area of contact of adapter sleeve and cold junction, guarantees the circular telegram effect.
Further, referring to fig. 3 and 4, as a specific embodiment, the elastic sheet has a specific structure that: the elastic metal sheet 24 further includes second segments 240 connected to the bottom 25, the second segments 240 are uniformly spaced around the center of the connection cavity 22, and the other ends of the second segments 240 are connected to the first segments 241.
It can be understood that, since the end of the first section is higher than the cylindrical inner cavity, when the connecting sleeve 2 is disposed on the cold end, the end of the first section may abut against the end of the cold end, causing a jamming phenomenon, and as a preferred embodiment, the first section 241 extends from the connection point with the second section 240 to a direction close to the bottom 25; through extending the first section of the elastic metal sheet to the direction close to the bottom surface, the connecting sleeve can play a role in guiding when being sleeved at the cold end, the elastic metal sheet is prevented from being abutted against the end part of the cold end, and jamming is avoided
Further, referring to fig. 2, the cross section of the end portion 242 is circular arc, and the circular arc 242 may further prevent the clamping stagnation, when the connecting sleeve is arranged at the cold end, the cylindrical inner cavity presses the elastic metal sheet to enable the elastic metal sheet to be elastically deformed, the size of the cylindrical inner cavity is possibly deviated in manufacturing, the pressing effect of the cylindrical inner cavities with different sizes on the elastic metal sheet is different, the contact part of the end part 242 and the inner peripheral surface of the cylindrical inner cavity is different at the moment, so that the electrifying effect is different, the end part 242 is arranged into an arc shape, the arc-shaped end 242 of the cylindrical inner cavities with different sizes can be tangent to the inner circumferential surface all the time, the contact area is not changed all the time, and specifically, the end 242 may be provided with a spherical shape, which may be optimized by making the number of the elastic metal pieces sufficiently large.
As a specific implementation manner, the elastic metal sheet 24 may be made of copper or aluminum, and the connecting sleeve may also be made of copper or aluminum, preferably copper.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. The utility model provides a single screw thread type elema electric heating element, includes body (1), body (1) including be located middle part heating portion (11) and through welded connection in cold junction (101) at heating portion (11) both ends, its characterized in that still includes adapter sleeve (2), be provided with on the outer peripheral face that cold junction (101) are close to the tip external screw thread (1010), the external screw thread (1010) be provided with the aluminium lamination on the surface, adapter sleeve (2) are formed with one side open-ended cylindrical connection chamber (22), even interval is provided with a plurality of shrinkage joints (20) on the lateral wall of connection chamber (22), shrinkage joint (20) are from the open position of connection chamber (22) to the bottom (25) of connection chamber (22) extend the setting, be provided with on the inner peripheral face of connection chamber (22) internal thread (221), adapter sleeve (2) threaded connection be in the tip of cold junction (101), and each thread side of the external thread (1010) can be in contact with the thread side of the internal thread (221), the thread top of the internal thread (221) can be in contact with the thread bottom of the external thread (1010), and the thread bottom of the internal thread (221) can be in contact with the thread bottom of the external thread (1010).
2. A single thread type silicon carbon rod electric heating element according to claim 1, characterized in that the cold end (101) is provided with a cylindrical inner cavity coaxial with the outer peripheral surface, the inner peripheral surface of the cylindrical inner cavity is provided with an aluminum layer, the connecting cavity (22) is provided with a plurality of elastic metal sheets (24), the elastic metal sheets (24) comprise a first section (241) extending outwards, the end parts (242) of the first sections (241) are positioned on the same circumference, the end parts (242) can be contacted with the inner peripheral surface of the cylindrical inner cavity, the center of the circumference passes through the axis of the connecting cavity, and the radius of the circumference is larger than that of the cylindrical inner cavity.
3. A single thread type silicon carbide rod electric heating element according to claim 2, characterized in that the elastic metal sheet (24) further comprises second sections (240) connected to the bottom (25), the second sections (240) being evenly spaced around the center of the connecting cavity (22), the other ends of the second sections (240) being connected to the first sections (241).
4. A single screw type silicon carbide rod electric heating element according to claim 3, wherein the first section (241) is extended from a portion connected to the second section (240) toward a direction close to the bottom portion (25).
5. A single thread type silicon carbide rod electric heating element according to claim 2, characterized in that the cross section of the end part (242) is circular arc.
6. A single thread type silicon carbide rod electric heating element according to claim 2, wherein the material of the elastic metal sheet (24) comprises copper and aluminum.
7. A single thread type silicon carbide rod electric heating element according to any one of claims 1 to 6, characterized in that one end of the connecting sleeve (2) far away from the body (1) is provided with a terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120001379.3U CN213847061U (en) | 2021-01-04 | 2021-01-04 | Single-thread type silicon carbide rod electric heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120001379.3U CN213847061U (en) | 2021-01-04 | 2021-01-04 | Single-thread type silicon carbide rod electric heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213847061U true CN213847061U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120001379.3U Active CN213847061U (en) | 2021-01-04 | 2021-01-04 | Single-thread type silicon carbide rod electric heating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213847061U (en) |
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2021
- 2021-01-04 CN CN202120001379.3U patent/CN213847061U/en active Active
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