CN111089476A - Roller kiln - Google Patents
Roller kiln Download PDFInfo
- Publication number
- CN111089476A CN111089476A CN201911397039.0A CN201911397039A CN111089476A CN 111089476 A CN111089476 A CN 111089476A CN 201911397039 A CN201911397039 A CN 201911397039A CN 111089476 A CN111089476 A CN 111089476A
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- China
- Prior art keywords
- heating
- temperature
- furnace
- hearth
- kiln
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
- F27B2009/3638—Heaters located above and under the track
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention discloses a roller kiln, which comprises a kiln body with a hearth, wherein a conveying device and a heating device are arranged in the hearth, the roller kiln is provided with more than one group of temperature-adjusting heating components for heating two side parts of the hearth, the temperature-adjusting heating components comprise two side heating elements which are respectively arranged on the kiln walls on the two sides of the hearth, and each side heating element extends into the hearth. The roller kiln has the advantages of simple and flexible regulation, good regulation effect, simple structure, low cost, easy implementation, easy modification of the existing equipment and the like.
Description
Technical Field
The invention relates to the technical field of heat treatment kiln equipment, in particular to a roller kiln.
Background
For the electric heating type roller kiln, heating elements horizontally penetrate through a hearth from top to bottom respectively, materials and roller rods for placing the materials are arranged between the upper heating element and the lower heating element, the temperature difference of the upper heating element and the lower heating element can be adjusted by adjusting the power of the upper heating element and the lower heating element from the temperature difference of the cross section of the hearth, but the temperature difference in the width direction does not have an effective adjusting and controlling means because the heating elements horizontally penetrate through the hearth, so that the temperature uniformity in the width direction is difficult to effectively adjust, and the defect of temperature field control of the existing roller kiln exists.
Because the heat of furnace both sides can outwards diffuse, consequently the temperature distribution of furnace cross-section can demonstrate the characteristics that middle height, both sides are low in the furnace width direction, leads to the ascending difference in temperature of furnace width direction. When the size of the roller kiln hearth is small, the temperature difference in the width direction of the hearth is not obvious, but the temperature difference in the width direction of the hearth is increased along with the increase of the width of the kiln, so that the quality of heat treatment products is seriously influenced. In order to reduce the temperature difference in the width direction of the hearth, the conventional method is to add lateral heat insulation structures on two sides of a roller kiln to reduce radiation heat dissipation on two sides and further alleviate the temperature difference in the width direction of the hearth, but the method has very small effect, is difficult to meet the heat treatment requirements of materials with higher temperature sensitivity, such as battery materials, and the like, and causes poor consistency of product sintering and low yield.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the roller kiln which is simple, convenient and flexible to regulate, good in regulating effect, simple in structure, low in cost, easy to implement and easy to modify the existing equipment.
In order to solve the technical problems, the invention adopts the following technical scheme:
the roller kiln comprises a kiln body with a hearth, wherein a conveying device and a heating device are installed in the hearth, the roller kiln is provided with more than one group of temperature-adjusting heating components for heating two side positions of the hearth, the temperature-adjusting heating components comprise two side heating elements which are respectively installed on furnace walls on two sides of the hearth, and each side heating element extends into the hearth.
As a further improvement of the above technical solution:
the roller kiln is corresponding every group heating element that adjusts the temperature and all is equipped with one and runs through along furnace width direction the installation pole that furnace set up, the both ends of installation pole all are equipped with the holding counter bore that the bottom extends to furnace in, and two lateral part heating element of each heating element that adjusts the temperature correspond respectively and install in the holding counter bore at installation pole both ends.
The side heating element is a helical heating element.
The roller kiln is provided with a plurality of temperature adjusting heating assemblies which are sequentially arranged at intervals along the conveying direction of the conveying device.
The side heating elements of all tempering heating assemblies are located in the same horizontal plane.
Heating device locates two sets of heating element above and below heating device including dividing, and each heating element includes runs through along furnace width direction many continuous type heating rod that furnace set up, many the continuous type heating rod is along conveyor direction of delivery interval arrangement in proper order.
A group of temperature-adjusting heating components is arranged between any two adjacent continuous heating rods in each heating component.
More than one continuous heating rod is arranged between any two adjacent groups of temperature-adjusting heating components.
All the side heating elements and all the continuous heating rods above the conveying device are located in the same horizontal plane, and all the side heating elements and all the continuous heating rods below the conveying device are located in the same horizontal plane.
The hearth is provided with a temperature control area which is divided into temperature adjusting sections connected in sequence along the conveying direction of the conveying device, and all lateral heating elements in each temperature adjusting section are connected with an independent temperature control circuit.
Compared with the prior art, the invention has the advantages that:
according to the roller kiln disclosed by the invention, the heating elements extending into the hearth are arranged on the furnace walls at two sides of the hearth, and the two side positions of the hearth can be heated through the heating elements, so that the temperatures at the two side positions of the hearth are increased, the temperature difference in the width direction of the hearth is improved, the temperature uniformity in the width direction of the hearth is better, and the quality of a heat treatment product can be improved. The roller kiln has the advantages of simple and convenient regulation and control, good regulation and control effect, simple structure, low cost, easy implementation and easy reconstruction of the existing equipment. The roller kiln can also independently regulate and control the temperature of each side part of the hearth, and the regulation and control flexibility is good.
Drawings
Fig. 1 is a schematic front view structure diagram of a roller kiln.
Fig. 2 is a schematic partial main sectional structure view of the roller kiln.
FIG. 3 is a schematic side sectional view of the side heating element mounted on the furnace body.
Fig. 4 is a partial cross-sectional structural schematic view of the side heating element mounted in the mounting bar.
FIG. 5 is a schematic side sectional view of a continuous heating rod installed on a furnace body.
Illustration of the drawings:
1. a furnace body; 11. a hearth; 2. a conveying device; 3. a heating device; 31. a continuous heating rod; 4. a side heating element; 5. mounting a rod; 51. and a counter bore is accommodated.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 5, the roller kiln of the present embodiment includes a furnace body 1 having a hearth 11, a conveying device 2 and a heating device 3 are installed in the hearth 11, the roller kiln is provided with more than one set of temperature adjusting heating components for heating two side positions of the hearth 11, the temperature adjusting heating components include two side heating elements 4 respectively installed on furnace walls at two sides of the hearth 11, and each side heating element 4 extends into the hearth 11. This roller kilns installs lateral part heating element 4 that stretches into in 11 furnace hearths on 11 both sides furnace wall of furnace, can heat two lateral part positions departments of furnace 11 through lateral part heating element 4 to promote the temperature of 11 two lateral part positions departments of furnace, realize improving the ascending difference in temperature of 11 width directions of furnace, make the ascending temperature homogeneity of 11 width directions of furnace better, can improve the thermal treatment product quality. The roller kiln has the advantages of simple and convenient regulation and control, good regulation and control effect, simple structure, low cost, easy implementation and easy reconstruction of the existing equipment. The roller kiln can also independently regulate and control the temperature of each side part of the hearth 11, and the regulation and control flexibility is good.
In this embodiment, the roller kiln corresponds every group heating element that adjusts the temperature and all is equipped with one and runs through the installation pole 5 that furnace 11 set up along furnace 11 width direction, and the both ends of installation pole 5 all are equipped with the bottom and extend to the holding counter bore 51 in the furnace 11, and two lateral part heating element 4 of each heating element that adjusts the temperature correspond respectively and install in the holding counter bore 51 at installation pole 5 both ends. When the furnace body is installed, the installation rods 5 penetrate through the two side walls of the furnace 11 and are installed on the furnace body 1, then the lateral heating elements 4 are installed in the containing counter bores 51 at the two ends of the installation rods 5, the installation is simple and convenient, the lateral heating elements 4 are stable and reliable after installation, the containing counter bores 51 have the functions of containing, supporting and protecting, the requirements on the structural strength, rigidity and other properties of the lateral heating elements 4 are low, the expensive lateral heating elements 4 do not need to be adopted, and the cost can be reduced. In addition, the side heating element 4 is installed in the accommodating counterbore 51 and is not in contact with the gas in the hearth 11, so that the side heating element 4 is prevented from being damaged by the corrosive atmosphere in the hearth 11.
In this embodiment, the lateral heating element 4 is a spiral heating element to satisfy the requirement that the wiring port is in the same position, the installation is convenient, and the cost is low, the installation is convenient, and the heating effect is good. The heating element is preferably a resistance wire.
In this embodiment, heating device 3 is including dividing two sets of heating element who locates heating device 3 top and below, and each heating element includes and runs through many continuous type heating rods 31 that furnace 11 set up along 11 width direction of furnace, and many continuous type heating rods 31 are arranged at interval along 2 direction of delivery of conveyor in proper order. The heating device 3 heats a section of the furnace 11 in the conveying direction of the conveying device 2. Preferably, each continuous heating rod 31 is mounted in a protective sleeve disposed through the furnace 11 to avoid damage to the continuous heating rod 31 from the corrosive atmosphere within the furnace 11.
In this embodiment, a group of temperature adjusting heating assemblies is disposed between any two adjacent continuous heating rods 31 in each heating assembly. That is, the continuous heating rods 31 and the temperature-adjusting heating components are alternately arranged, the continuous heating rods 31 and the side heating elements 4 of the temperature-adjusting heating components are uniformly arranged in the hearth 11, and the distance between the side heating elements 4 and the continuous heating rods 31 is consistent, so that the temperature difference in the hearth 11 can be better adjusted, and the temperature uniformity in the hearth 11 is ensured. In other embodiments, more than two sets of temperature-adjusting heating assemblies can be disposed between any two adjacent continuous heating rods 31 in each heating assembly. More than one continuous heating rod 31 can be arranged between any two adjacent groups of temperature-adjusting heating components.
In the present embodiment, all the side heating elements 4 and all the continuous heating rods 31 located above the conveyor 2 are located in the same horizontal plane, and all the side heating elements 4 and all the continuous heating rods 31 located below the conveyor 2 are located in the same horizontal plane. The lateral heating element 4 and the continuous heating rod 31 are located at the same height, so that the furnace hearth 11 is uniformly heated during working, the temperature difference in the furnace hearth 11 can be adjusted better, and the temperature uniformity in the furnace hearth 11 is ensured.
In this embodiment, the furnace 11 is provided with a temperature control area, the temperature control area is divided into temperature adjustment areas connected in sequence along the conveying direction of the conveying device 2, all the lateral heating elements 4 in each temperature adjustment area are connected with an independent temperature control circuit, all the lateral heating elements 4 in each temperature adjustment area are controlled by the independent temperature control circuit connected with the same, and the synchronous start and stop work can reduce the control difficulty, simplify the control system and save the cost, and all the lateral heating elements 4 in the same temperature adjustment area synchronously start and stop work, and the synchronous temperature rise and the speed of all the parts in the temperature adjustment area are consistent during temperature control, thereby being beneficial to improving the uniformity of the temperature in the furnace 11.
In this embodiment, it is preferable to make all the side heating elements 4 extend into the furnace 11 to a uniform depth, which is favorable for uniformity of heating temperature rise. The conveying device 2 is the prior art and comprises a plurality of conveying roller rods arranged at intervals in sequence and a driving mechanism for driving the conveying roller rods to rotate so as to convey materials.
In other embodiments, a plurality of temperature adjusting heating assemblies may be only arranged above or below the conveying device 2, and the plurality of temperature adjusting heating assemblies are sequentially arranged at intervals along the conveying direction of the conveying device 2, so that the temperature adjusting device can also adjust the temperature of the hearth 11 in the width direction. Furthermore, all the lateral heating elements 4 are located in the same horizontal plane, so that the temperature difference in the hearth 11 can be adjusted better, and the temperature uniformity in the hearth 11 can be ensured.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (10)
1. The utility model provides a roller path kiln, includes furnace body (1) that has furnace (11), install conveyor (2) and heating device (3) in furnace (11), its characterized in that: the roller kiln is provided with more than one group of temperature-adjusting heating components for heating two side parts of a hearth (11), each temperature-adjusting heating component comprises two side heating elements (4) respectively installed on furnace walls on two sides of the hearth (11), and each side heating element (4) extends into the hearth (11).
2. The roller bed kiln of claim 1, wherein: the roller kiln corresponds every group and adjusts the temperature heating element and all is equipped with one and runs through along furnace (11) width direction installation pole (5) that furnace (11) set up, the both ends of installation pole (5) all are equipped with bottom and extend to holding counter bore (51) in furnace (11), and two lateral part heating element (4) of each heating element that adjusts the temperature correspond respectively and install in holding counter bore (51) at installation pole (5) both ends.
3. The roller bed kiln of claim 1, wherein: the side heating element (4) is a helical heating element.
4. The roller bed kiln of claim 1, wherein: the roller kiln is provided with a plurality of temperature adjusting heating assemblies which are sequentially arranged at intervals along the conveying direction of the conveying device (2).
5. The roller bed kiln of claim 4, wherein: the side heating elements (4) of all the tempering heating assemblies are located in the same horizontal plane.
6. The roller bed kiln of claim 4, wherein: heating device (3) are including dividing two sets of heating element who locates heating device (3) top and below, and each heating element includes and runs through along furnace (11) width direction many continuous type heating rod (31), many that furnace (11) set up continuous type heating rod (31) are along conveyor (2) direction of delivery interval arrangement in proper order.
7. The roller bed kiln of claim 6, wherein: a group of temperature-adjusting heating components are arranged between any two adjacent continuous heating rods (31) in each heating component.
8. The roller bed kiln of claim 6, wherein: more than one continuous heating rod (31) is arranged between any two adjacent groups of temperature-adjusting heating components.
9. The roller bed kiln of claim 6, wherein: all the side heating elements (4) and all the continuous heating rods (31) which are positioned above the conveying device (2) are positioned in the same horizontal plane, and all the side heating elements (4) and all the continuous heating rods (31) which are positioned below the conveying device (2) are positioned in the same horizontal plane.
10. Roller bed kiln according to any one of claims 4 to 9, characterized in that: the hearth (11) is provided with a temperature control area, the temperature control area is divided into temperature adjusting sections which are sequentially connected along the conveying direction of the conveying device (2), and all the lateral heating elements (4) in each temperature adjusting section are connected with an independent temperature control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911397039.0A CN111089476A (en) | 2019-12-30 | 2019-12-30 | Roller kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911397039.0A CN111089476A (en) | 2019-12-30 | 2019-12-30 | Roller kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111089476A true CN111089476A (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911397039.0A Pending CN111089476A (en) | 2019-12-30 | 2019-12-30 | Roller kiln |
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| Country | Link |
|---|---|
| CN (1) | CN111089476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648853A (en) * | 2020-12-18 | 2021-04-13 | 合肥恒力装备有限公司 | Temperature control method for improving temperature uniformity of ultra-wide hearth |
-
2019
- 2019-12-30 CN CN201911397039.0A patent/CN111089476A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648853A (en) * | 2020-12-18 | 2021-04-13 | 合肥恒力装备有限公司 | Temperature control method for improving temperature uniformity of ultra-wide hearth |
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