CN216745479U - Electrode insulation structure of sintering furnace - Google Patents
Electrode insulation structure of sintering furnace Download PDFInfo
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- CN216745479U CN216745479U CN202220088889.3U CN202220088889U CN216745479U CN 216745479 U CN216745479 U CN 216745479U CN 202220088889 U CN202220088889 U CN 202220088889U CN 216745479 U CN216745479 U CN 216745479U
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- electrode rod
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Abstract
The utility model discloses an electrode insulation structure of a sintering furnace, which comprises a metal electrode bar, a heating electrode bar and an insulation sleeve, wherein the heating electrode bar penetrates through an electrode hole in a heat insulation material and then is connected and conducted with the metal electrode bar arranged at an electrode flange on a furnace body water jacket through threads, and an insulation sleeve assembly is sleeved at the joint of the metal electrode bar and the heating electrode bar. According to the sintering furnace insulation structure, the insulation sleeve and other components are additionally arranged at the joint of the metal electrode rod and the heating electrode rod, so that impurities in the sintering furnace can be intercepted, impurity powder is prevented from contacting the electrode to cause short circuit of the electrode, the phenomenon of ignition is caused, internal parts of the furnace are burnt out, and the service life of the components is shortened.
Description
Technical Field
The utility model relates to the technical field of sintering furnaces, in particular to an electrode insulation structure of a sintering furnace.
Background
Sintering furnaces are specialized equipment that allows powder billets to be sintered to achieve desired physical, mechanical properties and microstructures, and are widely used in industry. Sintering furnaces are generally used at high temperatures, and are generally realized by energizing heating rods with electrodes to generate heat in order to provide sufficient temperature in the furnace. At present, most sintering furnaces are powered on by connecting a metal electrode with a heating electrode rod, the heating rod is made of graphite or other high-temperature-resistant high-conductivity materials and is fixedly connected to the heating electrode rod, the heating electrode rod is made of graphite or other high-temperature-resistant high-conductivity materials, a heat insulation material is a high-temperature-resistant heat insulation material, and the heat insulation material is generally conductive. In the use process, because the heating electrode and the heat insulation material are both made of conductive materials, once enough conductive impurities are generated, the electrode can strike fire, and parts such as the heating electrode, the heat insulation material and the like, especially a pressure sintering furnace, are burnt, and the striking fire phenomenon is particularly serious because of the serious dust phenomenon.
In the prior art, as shown in fig. 1, a metal electrode bar and a heating electrode bar are connected and conducted through threads, an electrode hole is formed in a heat insulation material, and a certain gap is formed between the heating electrode bar and the electrode hole of the heat insulation material, so that the heat insulation material is prevented from directly contacting with a heating electrode. However, during the operation of the sintering furnace, the following problems have not been solved:
1. the sintering furnace is operated at high temperature, the heat insulation material is washed by the atmosphere in the furnace, particularly under the condition of positive pressure in the furnace, the washed heat insulation material forms fibrous dust which can accumulate in the areas a and b to cause short circuit, particularly, the area a generates ignition phenomenon to damage the heating electrode bar and the heat insulation material.
2. In the area b, when the heating electrode bar is eccentric with the heat insulation material hole, the heating electrode bar is close to the heat insulation material in local distance, and the ignition phenomenon is easy to generate.
In order to solve the above problems, it is necessary to provide a new electrode insulation structure of a sintering furnace.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electrode insulation structure of a sintering furnace, which solves the problems in the prior art, can reduce dust accumulation, avoid short circuit of a metal electrode, and can effectively solve the problem of eccentricity of a heating electrode bar and a heat insulation material hole.
In order to achieve the purpose, the utility model provides the following scheme: the utility model provides an electrode insulation structure of a sintering furnace, which comprises a metal electrode bar, a heating electrode bar and an insulation sleeve, wherein the heating electrode bar penetrates through an electrode hole in a heat insulation material and then is connected and conducted with the metal electrode bar arranged at an electrode flange on a furnace body water jacket through threads, and an insulation sleeve assembly is sleeved at the joint of the metal electrode bar and the heating electrode bar.
Preferably, the insulating sleeve component comprises a first insulating sleeve, a U-shaped groove is formed in the middle of the heating electrode rod, an external thread is arranged on the outer diameter from the end part of the electrode connecting end of the heating electrode rod to the U-shaped groove, the heating electrode rod is screwed into the first insulating sleeve through the external thread, one end of the first insulating sleeve is located in the U-shaped groove, and the other end of the first insulating sleeve is sleeved on the periphery of the metal electrode rod.
Preferably, the insulating sleeve assembly further comprises a second insulating sleeve and a nut, the second insulating sleeve is sleeved outside the heating electrode rod, and the nut is used for limiting the moving range of the second insulating sleeve.
Preferably, the insulating sleeve assembly comprises a first insulating sleeve, a second insulating sleeve and a nut, and the insulating sleeve is sleeved outside the heating electrode rod; one end of the first insulating sleeve is sleeved on the periphery of the metal electrode rod, and the other end of the first insulating sleeve is positioned on the periphery of the heating electrode rod; an internal thread is formed in the inner diameter of the other end of the first insulating sleeve, the first insulating sleeve is of a stepped structure, and the outer diameter of the connecting end of the second insulating sleeve is screwed in the internal thread of the first insulating sleeve through an external thread; the nut is located at the internal thread of the first insulating sleeve and used for limiting the first insulating sleeve and the second insulating sleeve.
Preferably, the insulating sleeve assembly comprises a first insulating sleeve, a second insulating sleeve, a first retainer ring and a second retainer ring, and the first insulating sleeve is sleeved outside the heating electrode rod; one end of the first insulating sleeve is sleeved on the periphery of the metal electrode rod, and the other end of the first insulating sleeve is positioned on the periphery of the heating electrode rod; an internal thread is formed in the inner diameter of the other end of the first insulating sleeve, the first insulating sleeve is of a stepped structure, and the outer diameter of the connecting end of the second insulating sleeve is screwed in the internal thread of the first insulating sleeve through an external thread; a first check ring is arranged on the metal electrode bar and positioned on the outer side of the first insulating sleeve, and a second check ring is arranged on the heating electrode bar and positioned on the outer side of the non-connecting end of the second insulating sleeve; the first retainer ring and the second retainer ring are made of high-temperature-resistant materials and can be made of graphite or ceramic.
Preferably, the insulating sleeve assembly comprises an insulating sleeve I, an insulating sleeve II, an insulating sleeve III, a protective sleeve, a threaded retainer ring and two nuts, the insulating sleeve is sleeved outside the connecting end of the metal electrode rod, and the insulating sleeve is sleeved outside the connecting end of the heating electrode rod; the third insulating sleeve is sleeved on the heating electrode rod, one end of the third insulating sleeve is arranged close to the second insulating sleeve, and the other end of the third insulating sleeve is positioned on the periphery of the non-connecting end of the heating electrode rod; the protective sleeve is sleeved on the outer side of the third insulating sleeve, two nuts used for fixing the protective sleeve are mounted at one end, located on the third insulating sleeve, of the heating electrode rod, a threaded check ring is mounted at the other end, located on the third insulating sleeve, of the heating electrode rod, and the threaded check ring is connected with the protective sleeve through threads and used for limiting the axial moving position of the third insulating sleeve; the protective sleeve and the threaded retainer ring are made of high-temperature resistant materials and can be made of graphite or ceramic.
Preferably, the insulating sleeve assembly is an insulating sleeve with a stepped structure, a stepped end of the insulating sleeve is located on the periphery of the metal electrode rod and embedded in the electrode flange, and the other end of the insulating sleeve is sleeved on the periphery of the heating electrode rod.
The insulating sleeve component is made of high-temperature-resistant insulating materials, such as ceramic, phlogopite and quartz, and preferably a boron nitride material; the nut is made of high-temperature-resistant materials and can be made of graphite or ceramic.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the sintering furnace insulation structure, the insulation sleeve and other components are additionally arranged at the joint of the metal electrode rod and the heating electrode rod, so that impurities in the furnace can be intercepted, and the phenomenon that impurity powder contacts the electrode to cause short circuit of the electrode is prevented, and the temperature in the sintering furnace is influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a cross-sectional view of a prior art electrode structure of a sintering furnace;
FIG. 2 is a sectional view of an electrode structure of a sintering furnace according to one embodiment;
FIG. 3 is a sectional view showing the electrode structure of a sintering furnace in the second embodiment;
FIG. 4 is a sectional view showing the electrode structure of a sintering furnace in the third embodiment;
FIG. 5 is a sectional view showing the electrode structure of a sintering furnace in the fourth embodiment;
FIG. 6 is a sectional view showing the electrode structure of a sintering furnace in the fifth embodiment;
FIG. 7 is a sectional view showing the electrode structure of a sintering furnace in the sixth embodiment;
wherein, 1, a metal electrode bar; 2 furnace body water jacket; 3, a heat insulation material; 4 heating the electrode bar; a region 5 a; 6 a heat exchange layer; a region 7 b; 8, sleeving a first insulating sleeve; 9, insulating sleeve II; 10, a nut; 11, a second check ring; 12, a first check ring; 13, insulating sleeve III; 14 a protective sheath; 15 a threaded retainer ring; 16 insulating sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide an electrode insulation structure of a sintering furnace, which solves the problems in the prior art, can reduce dust accumulation, avoid short circuit of a metal electrode, and can effectively solve the problem of eccentricity of a heating electrode bar and a heat insulation material hole.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 2, the present embodiment provides a sintering furnace electrode insulation structure,
aiming at the dust accumulation phenomenon at the area a 5, an insulating sleeve I8 is added on the basis of the traditional technology, the insulating sleeve is made of high-temperature-resistant insulating materials such as boron nitride, ceramics, phlogopite and quartz, and preferably boron nitride; the end part of the electrode connecting end of the heating electrode bar 4 is provided with a threaded hole for connecting with the metal electrode bar 1; a U type groove is opened to the middle part of heating electrode stick 4, and the electrode connection end tip of heating electrode stick 4 is equipped with the screw thread to U type groove department external diameter, is equipped with the screw thread on insulating cover 8, and during heating electrode stick 4 passed through the external screw thread and twists insulating cover 8, the screw thread part that makes insulating cover 8 lies in U type groove portion, prevents that insulating cover 8 from sliding by a wide margin under the exogenic action, avoids the extrusion fracture after the inflation simultaneously. An insulating cover 8 in the scheme fills the area a 5, dust accumulation is reduced, and a metal electrode short circuit is avoided, and meanwhile, the insulating cover 8 also plays a role in positioning and can effectively solve the eccentric problem of a heating electrode bar and a heat insulation material hole.
Example two
As shown in fig. 3, an insulation sleeve I8, an insulation sleeve II 9 and a nut 10 are added on the basis of the conventional technology, and the nut 10 is made of high-temperature-resistant materials such as graphite, ceramic and the like. The whole external diameter of heating electrode stick 4 is equipped with the screw thread, and a U type groove is opened at 4 middle parts of heating electrode stick, and insulating cover 8 is connected with heating electrode stick 4 through the screw thread, and insulating cover 8 screw thread parts are arranged in U type groove, leave certain expansion space. The second insulating sleeve 9 is sleeved outside the heating electrode rod 4, and the nut limits the moving range of the second insulating sleeve 9. In the scheme, the first insulating sleeve 8 has the same function as the first insulating sleeve in the embodiment; the effect of insulating cover two 9 on the one hand with heating electrode rod 4 with 3 isolated divisions of thermal-insulated material, avoid striking sparks, on the other hand can play heat retaining effect, reduces the heat loss of heat follow electrode hole department in the thermal-insulated section of thick bamboo, guarantees the temperature uniformity in the stove.
EXAMPLE III
As shown in fig. 4, a first insulating sleeve 8, a second insulating sleeve 9 and a nut 10 are added on the basis of the conventional technology. The second insulating sleeve 9 is sleeved on the outer side of the heating electrode rod 4; one end of the first insulating sleeve 8 is sleeved on the periphery of the metal electrode rod 1, and the other end of the first insulating sleeve is positioned on the periphery of the heating electrode rod 4; an internal thread is formed in the inner diameter of the other end of the first insulating sleeve 8, the first insulating sleeve 8 is of a stepped structure, and the outer diameter of the connecting end of the second insulating sleeve 9 is screwed in the internal thread of the first insulating sleeve 8 through an external thread; the nut 10 is located at the internal thread of the first insulating sleeve 8 and used for limiting the first insulating sleeve 8 and the second insulating sleeve 9. In the scheme, the insulating sleeve I8 adopts a step-shaped structure, so that impurities in the furnace can be intercepted layer by layer, and the situation that impurity powder contacts an electrode to cause short circuit of the electrode is prevented; the second insulating sleeve 9 has the same function as the second insulating sleeve 9 in the second embodiment.
Example four
As shown in fig. 5, a first insulating sleeve 8, a second insulating sleeve 9, a first check ring 12 and a second check ring 11 are added on the basis of the conventional technology. The second insulating sleeve 9 is sleeved on the outer side of the heating electrode rod 4; one end of the first insulating sleeve 8 is sleeved on the periphery of the metal electrode rod 1, and the other end of the first insulating sleeve is positioned on the periphery of the heating electrode rod 4; an internal thread is formed in the inner diameter of the other end of the first insulating sleeve 8, the first insulating sleeve is of a stepped structure, and the outer diameter of the connecting end of the second insulating sleeve 9 is screwed in the internal thread of the first insulating sleeve 8 through the external thread; a first check ring 12 is arranged on the metal electrode rod 1 and positioned on the outer side of the first insulating sleeve 8, and a second check ring 11 is arranged on the heating electrode rod 4 and positioned on the outer side of the non-connecting end of the second insulating sleeve 9. The two insulating sleeves have the same functions as those of the third embodiment.
EXAMPLE five
As shown in fig. 6, three insulating sleeves, two nuts 10, a protective sleeve 14 and a threaded retainer ring 15 are added on the basis of the conventional technology, and the protective sleeve 14 and the threaded retainer ring 15 are made of high-temperature resistant materials such as graphite, ceramic and the like. The first insulating sleeve 8 is sleeved on the outer side of the connecting end of the metal electrode rod 1, and the second insulating sleeve 9 is sleeved on the outer side of the connecting end of the heating electrode rod 4; the third insulating sleeve 13 is sleeved on the heating electrode rod 4, one end of the third insulating sleeve 13 is arranged close to the second insulating sleeve 9, and the other end of the third insulating sleeve is positioned on the periphery of the non-connecting end of the heating electrode rod 4; the outside cover of three 13 of insulating cover is equipped with protective sheath 14, and two nuts 10 that are used for fixed protective sheath 14 are installed to the one end that lies in three 13 of insulating cover on the heating electrode stick 4, and threaded retaining ring 15 is installed to the other end that lies in three 13 of insulating cover on the heating electrode stick 4, and threaded retaining ring 15 is connected through the screw and is used for restricting the axial displacement position of three 13 of insulating cover with protective sheath 14, reserves the expansion space of three 13 of insulating cover, and two nuts 10 are used for fixed protective sheath 14. This scheme can effectively guarantee heating electrode and thermal-insulated material 3's insulation, avoids striking sparks. Meanwhile, the multi-layer sleeve can effectively prevent heat loss in the furnace and ensure the temperature uniformity in the furnace.
EXAMPLE six
As shown in fig. 7, an insulating sleeve 15 is added on the basis of the conventional technology, the stepped end of the insulating sleeve 15 is positioned at the periphery of the metal electrode rod 1 and embedded at the electrode flange, and the other end of the insulating sleeve 15 is sleeved at the periphery of the heating electrode rod 4. The step of the insulating sleeve 15 can limit the insulating sleeve 15, so that the insulating sleeve 15 can slide in a limited space in the axial direction, and the insulating sleeve 15 can expand at high temperature without obstruction.
The above 6 embodiments can be combined according to practical situations, for example, in the second embodiment and the fifth embodiment, 2 sets of insulating sleeves at the electrode flange and the heating electrode can be used alternatively.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (9)
1. The utility model provides a fritting furnace electrode insulation system which characterized in that: the heating electrode rod penetrates through an electrode hole in a heat insulation material and is arranged at an electrode flange on the furnace body water jacket, the metal electrode rod is connected and conducted through threads, and an insulating sleeve assembly is sleeved at the joint of the metal electrode rod and the heating electrode rod.
2. Sintering furnace electrode insulation construction according to claim 1, characterized in that: the insulating sleeve assembly comprises an insulating sleeve I, a U-shaped groove is formed in the middle of the heating electrode rod, external threads are arranged on the outer diameter from the end part of the electrode connecting end of the heating electrode rod to the U-shaped groove, the heating electrode rod is screwed into the insulating sleeve I through the external threads, one end of the insulating sleeve I is located in the U-shaped groove, and the other end of the insulating sleeve I is sleeved on the periphery of the metal electrode rod.
3. Sintering furnace electrode insulation construction according to claim 2, characterized in that: the insulating sleeve assembly further comprises a second insulating sleeve and a nut, the second insulating sleeve is sleeved on the outer side of the heating electrode rod, and the nut is used for limiting the moving range of the second insulating sleeve.
4. Sintering furnace electrode insulation construction according to claim 1, characterized in that: the insulating sleeve assembly comprises a first insulating sleeve, a second insulating sleeve and a nut, and the second insulating sleeve is sleeved outside the heating electrode rod; one end of the first insulating sleeve is sleeved on the periphery of the metal electrode rod, and the other end of the first insulating sleeve is positioned on the periphery of the heating electrode rod; an internal thread is formed in the inner diameter of the other end of the first insulating sleeve, the first insulating sleeve is of a stepped structure, and the outer diameter of the connecting end of the second insulating sleeve is screwed in the internal thread of the first insulating sleeve through an external thread; the nut is located at the internal thread of the first insulating sleeve and used for limiting the first insulating sleeve and the second insulating sleeve.
5. Sintering furnace electrode insulation construction according to claim 1, characterized in that: the insulating sleeve assembly comprises a first insulating sleeve, a second insulating sleeve, a first check ring and a second check ring, and the insulating sleeve is sleeved outside the heating electrode rod; one end of the first insulating sleeve is sleeved on the periphery of the metal electrode rod, and the other end of the first insulating sleeve is positioned on the periphery of the heating electrode rod; an internal thread is formed in the inner diameter of the other end of the first insulating sleeve, the first insulating sleeve is of a stepped structure, and the outer diameter of the connecting end of the second insulating sleeve is screwed in the internal thread of the first insulating sleeve through an external thread; a first check ring is arranged on the metal electrode bar and positioned on the outer side of the first insulating sleeve, and a second check ring is arranged on the heating electrode bar and positioned on the outer side of the non-connecting end of the second insulating sleeve; the first retainer ring and the second retainer ring are made of high-temperature-resistant materials.
6. Sintering furnace electrode insulation construction according to claim 1, characterized in that: the insulating sleeve assembly comprises an insulating sleeve I, an insulating sleeve II, an insulating sleeve III, a protective sleeve, a threaded retainer ring and two nuts, the insulating sleeve is sleeved outside the connecting end of the metal electrode rod, and the insulating sleeve is sleeved outside the connecting end of the heating electrode rod; the third insulating sleeve is sleeved on the heating electrode rod, one end of the third insulating sleeve is close to the second insulating sleeve, and the other end of the third insulating sleeve is positioned on the periphery of the non-connecting end of the heating electrode rod; the protective sleeve is sleeved on the outer side of the third insulating sleeve, two nuts used for fixing the protective sleeve are mounted at one end, located on the third insulating sleeve, of the heating electrode rod, a threaded check ring is mounted at the other end, located on the third insulating sleeve, of the heating electrode rod, and the threaded check ring is connected with the protective sleeve through threads and used for limiting the axial moving position of the third insulating sleeve; the protective sleeve and the threaded retainer ring are made of high-temperature resistant materials.
7. Sintering furnace electrode insulation construction according to claim 1, characterized in that: the insulating sleeve component adopts an insulating sleeve with a step-shaped structure, the end with steps of the insulating sleeve is positioned on the periphery of the metal electrode rod and embedded into the electrode flange, and the other end of the insulating sleeve is sleeved on the periphery of the heating electrode rod.
8. Sintering furnace electrode insulation construction according to claim 1, characterized in that: the insulating sleeve component is made of high-temperature-resistant insulating materials.
9. Sintering furnace electrode insulation according to claim 3, 4 or 6, characterized in that: the nut is made of high-temperature-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220088889.3U CN216745479U (en) | 2022-01-14 | 2022-01-14 | Electrode insulation structure of sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220088889.3U CN216745479U (en) | 2022-01-14 | 2022-01-14 | Electrode insulation structure of sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216745479U true CN216745479U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220088889.3U Active CN216745479U (en) | 2022-01-14 | 2022-01-14 | Electrode insulation structure of sintering furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216745479U (en) |
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2022
- 2022-01-14 CN CN202220088889.3U patent/CN216745479U/en active Active
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Address after: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee after: Ningbo Hengpu Technology Co.,Ltd. Address before: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee before: Ningbo Hengpu Vacuum Technology Co.,Ltd. |