CN202931575U - Roller hearth type resistance-heated furnace and resistance heater thereof - Google Patents
Roller hearth type resistance-heated furnace and resistance heater thereof Download PDFInfo
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- CN202931575U CN202931575U CN 201220597461 CN201220597461U CN202931575U CN 202931575 U CN202931575 U CN 202931575U CN 201220597461 CN201220597461 CN 201220597461 CN 201220597461 U CN201220597461 U CN 201220597461U CN 202931575 U CN202931575 U CN 202931575U
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- refractory material
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Abstract
The utility model provides a roller hearth type resistance-heated furnace and a resistance heater thereof. The resistance heater comprises a housing without a top cover, bottom fireproofing materials arranged on the housing inner bottom, lateral part fireproofing materials arranged on housing inner lateral parts and at least one resistance tape located in a space enclosed by the bottom fireproofing materials and the lateral part fireproofing materials. The resistance heater comprises fireproof elevating members and a metal cover plate, wherein the fireproof elevating members are arranged on the lateral part fireproofing materials and/or the bottom fireproofing materials and are higher than the upper surfaces of the lateral part fireproofing materials; the metal cover plate is arranged on the fireproof elevating members and possesses an area no less than an area of a housing upper surface; the fireproof elevating members and the metal cover plate are constructed in such a way that the space enclosed by the bottom fireproofing materials and the lateral part fireproofing materials can be in communication with the outside through the space among the metal cover plate and the lateral part fireproofing materials. According to the utility model, short circuit of the resistance tape caused by drop of scale cinder can be avoided and good heating effects are possessed.
Description
Technical field
The roller-bottom type resistance-heated furnace that the utility model relates to a kind of resistance heater for the roller-bottom type resistance-heated furnace and comprises this resistance heater belongs to the resistance-heated furnace technical field.
Background technology
In the prior art, an important function of roller-bottom type resistance-heated furnace is for steel part heats, and its heating-up temperature can reach 880 ℃.Usually, the roller-bottom type resistance-heated furnace comprises the first resistance heater, to be heated transfer passage and the second resistance heater, wherein, the first resistance heater, to be heated the transfer passage that comprises conveying roller and the second resistance heater are separately positioned on the upper, middle and lower of roller-bottom type resistance-heated furnace.Usually, the bottom refractory brick that the first resistance heater comprises half-headed shell, be arranged on the shell inner bottom part (for example, high-alumina brick), at least one resistive band that is compression S shape that is arranged on the sidepiece refractory brick (for example, high-alumina brick) of shell inside portion and is positioned at the space that is surrounded by bottom refractory brick and sidepiece refractory brick.
yet, in the process of using the roller-bottom type resistance-heated furnace, with to be heated (for example rotate by conveying roller, steel part) be fed forward in to be heated transfer passage, the roller-bottom type resistance-heated furnace can (for example be heated to very high temperature with to be heated, 880 ℃), and then the generation oxide skin that to be heated surface can be difficult to avoid (for example, iron scale), and oxide skin can come off and fall into the second resistance heater that is arranged on the bottom, thereby can cause the resistive band short circuit in resistance heater, and burn out therefrom the very high frequency of resistive band.
In sum, need a kind of resistance heater that is used for the roller-bottom type resistance-heated furnace that can avoid causing because of coming off of oxide skin the resistive band short circuit badly.
The utility model content
One of the purpose of this utility model is to provide a kind of resistance heater that is used for the roller-bottom type resistance-heated furnace that can avoid causing because of coming off of oxide skin the resistive band short circuit.
One side of the present utility model provides a kind of resistance heater of roller-bottom type resistance-heated furnace.described resistance heater comprises half-headed shell, be arranged on the bottom refractory material of shell inner bottom part, be arranged on the sidepiece refractory material of shell inside portion and at least one resistive band that is positioned at the space that is surrounded by bottom refractory material and sidepiece refractory material, and described resistance heater also comprises fire-resistant part and the metal cover board raised, wherein, the described fire-resistant upper surface that part is arranged on sidepiece refractory material and/or bottom refractory material and exceeds the sidepiece refractory material of raising, described metal cover board is arranged on fire-resistantly to be raised on part and has the area that is not less than the upper surface of outer cover area, and describedly fire-resistantly raise part and metal cover board is constructed to make the described space that is surrounded by bottom refractory material and sidepiece refractory material to be in communication with the outside by the space between metal cover board and sidepiece refractory material.
Preferably in embodiment, the described fire-resistant part of raising is the cylinder that is arranged on the sidepiece refractory material at one of resistance heater of the present utility model.
Preferably in embodiment, the described fire-resistant quantity of raising part is more than two and has each other spacing at one of resistance heater of the present utility model.
Preferably in embodiment, the described fire-resistant part of raising is high-alumina brick at one of resistance heater of the present utility model.
Preferably in embodiment, described metal cover board is corrosion resistant plate at one of resistance heater of the present utility model.
Of the present utility modelly provide on the other hand a kind of roller-bottom type resistance-heated furnace.Described roller-bottom type resistance-heated furnace resistance comprises the first resistance heater, comprise to be heated transfer passage and second resistance heater of conveying roller, described the first resistance heater, to be heated transfer passage and the second resistance heater are separately positioned on the upper, middle and lower of roller-bottom type resistance-heated furnace, and described the second resistance heater is resistance heater as above.
Preferably in embodiment, described roller-bottom type resistance-heated furnace comprises at least one described second resistance heater at one of roller-bottom type resistance-heated furnace of the present utility model.
Compared with prior art, the beneficial effects of the utility model comprise: provide a kind of can avoiding to make the resistance heater of resistive band short circuit because oxide skin drops, and had good heating effect; A kind of roller-bottom type resistance-heated furnace with above-mentioned resistance heater is provided.
Description of drawings
By the description of carrying out below in conjunction with accompanying drawing, above and other purpose of the present utility model and characteristics will become apparent, wherein:
The master that Fig. 1 schematically shows according to the resistance heater of the roller-bottom type resistance-heated furnace of exemplary embodiment of the present utility model looks cutaway view;
Fig. 2 schematically shows the end view according to the resistance heater of the roller-bottom type resistance-heated furnace of exemplary embodiment of the present utility model.
Description of reference numerals is as follows:
1-shell, 2-bottom refractory brick, 3-sidepiece refractory brick, fire-resistant part, 5-corrosion resistant plate and the 6-resistive band raised of 4-.
Embodiment
Hereinafter, in connection with exemplary embodiment, roller-bottom type resistance-heated furnace of the present utility model and resistance heater thereof are described.
One side of the present utility model provides a kind of resistance heater of roller-bottom type resistance-heated furnace.
in an exemplary embodiment of the present utility model, resistance heater comprises half-headed shell, be arranged on the shell inner bottom part (namely, the inside bottom of shell) bottom refractory material, be arranged on the shell inside portion (namely, the inside portion of shell) sidepiece refractory material and at least one resistive band that is positioned at the space that is surrounded by bottom refractory material and sidepiece refractory material, and described resistance heater also comprises fire-resistant part and the metal cover board raised, wherein, fire-resistantly raise the upper surface that part is arranged on sidepiece refractory material and/or bottom refractory material and exceeds the sidepiece refractory material, metal cover board is arranged on fire-resistantly to be raised on part and has the area that is not less than the upper surface of outer cover area, and fire-resistantly raise part and metal cover board is constructed to make the described space that is surrounded by bottom refractory material and sidepiece refractory material to be in communication with the outside by the space between metal cover board and sidepiece refractory material.The resistance heater of this exemplary embodiment is owing to being provided with top cover, so can avoid coming off and falling into the situation that causes the resistive band short circuit in resistance heater because of oxide skin; And due in this exemplary embodiment, fire-resistantly raise part and metal cover board is constructed to make the described space that is surrounded by bottom refractory material and sidepiece refractory material to be in communication with the outside by the space between metal cover board and sidepiece refractory material, so the hot-fluid that resistive band produces can (for example arrive the external world fully, the top of metal cover board), thus guarantee that resistance heater of the present utility model has good heating effect.
Preferably, the fire-resistant part of raising can for being arranged on the cylinder on the sidepiece refractory material, for example, can be the high-alumina brick of cuboid.In addition, the fire-resistant quantity of raising part is more than two and has each other spacing.Preferably, metal cover board is corrosion resistant plate.
Of the present utility modelly provide on the other hand a kind of roller-bottom type resistance-heated furnace.
In another exemplary embodiment of the present utility model, the roller-bottom type resistance-heated furnace comprises the first resistance heater, comprise to be heated transfer passage and second resistance heater of conveying roller, and the first resistance heater, to be heated transfer passage and the second resistance heater are separately positioned on the upper, middle and lower of roller-bottom type resistance-heated furnace, wherein, the second resistance heater has the structure identical with resistance heater as above.In addition, the roller-bottom type resistance-heated furnace can comprise one or more the second resistance heater.
Describe an exemplary embodiment of resistance heater of the present utility model in detail below in conjunction with accompanying drawing.
The master that Fig. 1 schematically shows according to the resistance heater of the roller-bottom type resistance-heated furnace of exemplary embodiment of the present utility model looks cutaway view.Fig. 2 schematically shows the end view according to the resistance heater of the roller-bottom type resistance-heated furnace of exemplary embodiment of the present utility model.
As depicted in figs. 1 and 2, in this exemplary embodiment, the resistance heater of roller-bottom type resistance-heated furnace comprises shell 1, bottom refractory brick 2, sidepiece refractory brick 3, fire-resistant part 4, corrosion resistant plate 5 and the resistive band 6 raised.
Wherein, shell 1 is made by steel plate, and it is shaped as half-headed cuboid.Bottom refractory brick 2 and sidepiece refractory brick 3 are separately positioned on bottom and the sidepiece of shell 1 inboard.Bottom refractory brick 2 and sidepiece refractory brick 3 can be the refractory brick of high-alumina brick or other suitable material.Be provided with the resistive band 6 of the S shape that is compression in the space that bottom refractory brick 2 and sidepiece refractory brick 3 surround.The quantity of resistive band 6 can be one or more.
In this exemplary embodiment, the fire-resistant part 4 of raising is the refractory brick of high-alumina brick or other suitable material.Fire-resistantly raise the upper surface that part 4 use fire clays are built by laying bricks or stones on sidepiece refractory brick 3 and exceeded sidepiece refractory brick 3, be arranged on the fire-resistant corrosion resistant plate 5 of raising part 4 tops with support.Corrosion resistant plate 5 has the area of the upper surface that is slightly larger than shell 1.In this exemplary embodiment, the fire-resistant quantity of raising part 4 is 6, and has each other predetermined space, these intervals can resistive band 6 residing space be communicated with the space of corrosion resistant plate top, thereby can be in the situation that prevent that resistance heater of the present utility model from burning out because oxide skin drops, in not hindering, the thermal radiation of the heat transfer of the air of low-temperature space and high-temperature region is not conducted heat, and that is to say, can avoid the deteriorated of heating effect.
In addition, in another exemplary embodiment of the present utility model, also can adopt the refractory brick that keeps flat to form sidepiece refractory brick 3, and adopt the refractory brick that stands up to form the fire-resistant part 4 of raising, thereby form by the refractory brick that polylith stands up is set the shape that is similar to sawtooth (or parapet wall).
In sum, the utility model provides a kind of resistance heater that can be suitable for the roller-bottom type resistance-heated furnace, and this resistance heater can be avoided making the resistive band short circuit and burning out resistance heater because oxide skin drops, and has good heating effect.In addition, the utility model also provides a kind of roller-bottom type resistance-heated furnace with above-mentioned resistance heater.
Although the above has described the utility model with exemplary embodiment by reference to the accompanying drawings, those of ordinary skills should be clear, in the situation that do not break away from the spirit and scope of claim, can carry out various modifications to above-described embodiment.
Claims (7)
1. the resistance heater of a roller-bottom type resistance-heated furnace, described resistance heater comprises half-headed shell, be arranged on the bottom refractory material of shell inner bottom part, be arranged on the sidepiece refractory material of shell inside portion and at least one resistive band that is positioned at the space that is surrounded by bottom refractory material and sidepiece refractory material, it is characterized in that, described resistance heater also comprises fire-resistant part and the metal cover board raised, wherein, the described fire-resistant upper surface that part is arranged on sidepiece refractory material and/or bottom refractory material and exceeds the sidepiece refractory material of raising, described metal cover board is arranged on fire-resistantly to be raised on part and has the area that is not less than the upper surface of outer cover area, and describedly fire-resistantly raise part and metal cover board is constructed to make the described space that is surrounded by bottom refractory material and sidepiece refractory material to be in communication with the outside by the space between metal cover board and sidepiece refractory material.
2. the resistance heater of roller-bottom type resistance-heated furnace according to claim 1, is characterized in that, the described fire-resistant part of raising is the cylinder that is arranged on the sidepiece refractory material.
3. the resistance heater of roller-bottom type resistance-heated furnace according to claim 2, is characterized in that, the described fire-resistant quantity of raising part is more than two and has each other spacing.
4. the resistance heater of roller-bottom type resistance-heated furnace according to claim 1, is characterized in that, the described fire-resistant part of raising is high-alumina brick.
5. the resistance heater of roller-bottom type resistance-heated furnace according to claim 1, is characterized in that, described metal cover board is corrosion resistant plate.
6. roller-bottom type resistance-heated furnace, comprise the first resistance heater, comprise to be heated transfer passage and second resistance heater of conveying roller, described the first resistance heater, to be heated transfer passage and the second resistance heater are separately positioned on the upper, middle and lower of roller-bottom type resistance-heated furnace, it is characterized in that, described the second resistance heater is resistance heater as described in any one in claim 1 to 5.
7. roller-bottom type resistance-heated furnace according to claim 6, is characterized in that, described roller-bottom type resistance-heated furnace comprises at least one described second resistance heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220597461 CN202931575U (en) | 2012-11-13 | 2012-11-13 | Roller hearth type resistance-heated furnace and resistance heater thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220597461 CN202931575U (en) | 2012-11-13 | 2012-11-13 | Roller hearth type resistance-heated furnace and resistance heater thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931575U true CN202931575U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220597461 Expired - Fee Related CN202931575U (en) | 2012-11-13 | 2012-11-13 | Roller hearth type resistance-heated furnace and resistance heater thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202931575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235477A (en) * | 2018-03-14 | 2018-06-29 | 宁波萨科森工业科技有限公司 | A kind of bayonet heater |
-
2012
- 2012-11-13 CN CN 201220597461 patent/CN202931575U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235477A (en) * | 2018-03-14 | 2018-06-29 | 宁波萨科森工业科技有限公司 | A kind of bayonet heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20161113 |