Roller kiln with flue and heating temperature compensation structure on side face

Abstract

The utility model provides a roller kiln with a flue and a heating and temperature compensation structure on the side face, the roller kiln comprises a roller kiln body, a flue gas channel and a plurality of heating and temperature compensation elements I, the flue gas channel is arranged on a single side wall or two side walls of the roller kiln body, and the flue gas channel is arranged along the length direction of the roller kiln body; the first heating and temperature supplementing elements are arranged in the length direction of the roller kiln body and arranged on the single side or the two sides of the roller kiln body, and the first heating and temperature supplementing elements are inserted into the smoke channel. According to the multi-layer multi-column sagger, heat of the side wall of the roller kiln can be better supplemented, a better heat transfer effect is achieved, and the problems that the temperature of the cross section of the multi-layer multi-column sagger is not uniform, and particularly raw materials in the multi-layer multi-column sagger are not sintered well due to non-uniform heat absorption of the raw materials caused by insufficient heat of the side wall of the roller kiln and nearby positions are solved. The first heating and temperature supplementing element is installed in a hidden mode, so that the occupied transverse space of the roller kiln body can be reduced, the width design of the roller kiln can be reduced, and the requirement for capacity output of a limited site is met.

Description

Technical Field

[0001] The utility model relates to the technical field of roller kilns, and more specifically to a roller kiln with a flue and a heating and temperature compensation structure on the side. Background Art

[0002] Roller kilns, especially those for sintering multi-layer and multi-row saggers, have certain temperature differences locally on the sides of the kiln walls due to the heat dissipation of the kiln walls and transmission rollers and the concentrated heat absorption of the multi-layer and multi-row saggers. In particular, new heat cannot be provided in time on the sides of the kiln walls and the sides of the middle layers of the saggers close to the kiln walls. As time goes by, the large temperature difference in the cross section causes poor sintering effect.

[0003] In the prior art, in order to solve the above-mentioned problem, a heating rod is generally separately inserted above or below the transmission roller to supplement the temperature of the roller kiln. However, there is still a certain temperature difference between the side position of the middle layer of the sagger and the middle of the roller kiln, which makes the cross-sectional temperature of the multi-layer and multi-row saggers uneven, resulting in poor consistency of products sintered from the multi-layer and multi-row saggers, which cannot meet the product quality requirements. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a roller kiln with a flue and a heating and temperature compensation structure on the side, which can better supplement the heat of the side walls of the roller kiln, achieve better heat transfer, and solve the problem of uneven cross-sectional temperature of multi-layer and multi-row saggers, especially the problem of uneven heat absorption of raw materials in the multi-layer and multi-row saggers due to insufficient heat on the side walls and vicinity of the roller kiln, resulting in poor sintering of raw materials.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a roller kiln with a flue and a heating and temperature compensation structure on the side, characterized in that it includes a roller kiln body, a flue gas duct and a plurality of heating and temperature compensation elements; the flue gas duct is arranged on a single side wall or both side walls of the roller kiln body, and the flue gas duct is opened along the length direction of the roller kiln body; a plurality of heating and temperature compensation elements are arranged along the length direction of the roller kiln body and are arranged on a single side or both side parts of the roller kiln body, and a plurality of heating and temperature compensation elements are inserted into the flue gas duct.

[0006] In the above scheme, the utility model adds a flue gas channel to the side wall of the roller kiln, which increases the circulation of the side flue gas and can drive the temperature of the side flue gas channel area to increase. At the same time, the heat emitted by the heating and compensating element as a heating and compensating structure can be absorbed by the flue gas in the flue gas channel and the products near the side wall, and the temperature of the side wall of the roller kiln and the temperature of the products near the side wall can be better locally increased to achieve better heat exchange, thereby solving the problem of uneven cross-sectional temperature of multi-layer and multi-row saggers, especially the problem of uneven heat absorption of raw materials in multi-layer and multi-row saggers due to insufficient heat on the side wall and nearby parts of the roller kiln, resulting in poor sintering of raw materials.

[0007] In addition, once the heating and temperature compensation element is inserted into the flue gas channel, it is a hidden design, which can reduce the lateral space occupied by the roller kiln body and the width design of the roller kiln, thus meeting the demand for production capacity output in a limited space.

[0008] The plurality of heating and temperature compensation elements are inserted into the smoke channel, which means that a slot is provided on one side or both sides of the roller kiln body, the slot is connected to the smoke channel, and the heating and temperature compensation element is inserted into the slot and extends into the smoke channel. The heating and temperature compensation element of the utility model is a heating tube with independently controllable temperature, which can independently control the temperature, so that the temperature of different side walls of the roller kiln can be controlled and heated according to actual needs.

[0009] The slot 1 is inclined downward from the outer wall of the roller kiln to the inner wall of the roller kiln;

[0010] Alternatively, the slot 1 is inclined upward from the outer wall of the roller kiln body to the inner wall of the roller kiln body;

[0011] Alternatively, the slot one includes a slot one inclined downward from the outer wall of the roller kiln body to the inner wall of the roller kiln body and a slot two inclined upward from the outer wall of the roller kiln body to the inner wall of the roller kiln body; a heating and temperature compensation element one is respectively inserted in the slot one and the slot two.

[0012] The groove 1 and the groove 2 are arranged in mirror symmetry.

[0013] The end of the first heating and temperature compensation element is opposite to the middle of the multi-layer and multi-row saggers inside the roller kiln body.

[0014] The smoke passage is a passage that expands toward the inside of the roller kiln body; or, the smoke passage is an arc-shaped passage that opens toward the inside of the roller kiln body. The utility model adopts the smoke passage as an arc-shaped passage that opens toward the inside of the roller kiln body, which can facilitate the flow of smoke and better gather smoke and heat, and can also reduce the damage of the roller kiln body to the stress during high-temperature sintering.

[0015] When the flue gas passage is a passage expanding toward the inside of the roller kiln body, the angle between the side of the flue gas passage and the horizontal plane is 10° to 30°.

[0016] The slot 1 is opened sequentially from the frame, the heat preservation layer, the heat insulating layer and the fire exposure layer of the roller kiln body.

[0017] The top and / or bottom of the roller kiln body is provided with a heating and temperature compensation module. This design can further supplement the heat in the roller kiln body to improve the heat absorption effect of the raw materials in the multi-layer and multi-row saggers.

[0018] The heating and temperature compensation module comprises two slots opened on the two side walls of the roller kiln body and two heating and temperature compensation elements which can be individually temperature-controlled; two ends of the two heating and temperature compensation elements are respectively inserted into the two slots.

[0019] The heating and compensating temperature element of the utility model is inserted obliquely into the slot one, which can realize a hidden setting, and does not protrude from the side of the roller kiln. The space of the smoke channel is used as a storage and transportation channel for hot smoke. When the heating and compensating temperature element is heated, more air will gather in the smoke channel than in other places, which can better generate local heat accumulation. It can also increase the heat transfer in the roller kiln by several convection channels, which has obvious effects on compensating and heating. It can realize that the local gas space can be heated and quickly heated up for absorption by the multi-layer and multi-row saggers inside the roller kiln body. At the same time, the slot one connected to the smoke channel provides an assembly space for the heating and compensating temperature element one, and does not protrude and occupy the area inside the side of the roller kiln body. Through the oblique design of the heating and compensating temperature element one and the smoke channel, the hot smoke is gathered and transferred, and rapid temperature compensation can be realized. It can be used in a multi-row three-layer and four-layer stacked sintering environment. Further, the top and / or bottom of the roller kiln body are provided with a heating and compensating temperature module to heat the top and / or bottom of the middle position of the roller kiln body.

[0020] In addition, the utility model can add a corresponding number of heating and temperature compensation elements one as needed, so that the power of different numbers of heating and temperature compensation elements one can be adjusted or they can be grouped to meet the sintering requirements of sagger raw materials with different numbers of columns or layers.

[0021] In the production process of material sintering, when the transmission rate is constant, the transmission distance per unit time is the same. When the number of layers is large, the production efficiency is greater. Since the roller kiln of the utility model adds a flue gas channel and a heating and temperature compensation element on the side, it can solve the problem that when stacking a large number of layers of sagger materials, the temperature difference in the same mold section is too large due to uneven heating during sintering, which affects the sintering quality of the material. When multiple layers of saggers are used for simultaneous sintering, the width of the roller kiln body is reduced under the premise of ensuring a certain productivity, which has greater applicability to specific production scenarios, or achieves greater production output in the same venue.

[0022] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0023] 1. The roller kiln with a flue and a heating and temperature compensation structure on the side of the utility model can better supplement the heat of the side wall of the roller kiln, achieve better heat transfer, and solve the problem of uneven cross-sectional temperature of multi-layer and multi-row saggers, especially the problem of uneven heat absorption of raw materials in multi-layer and multi-row saggers caused by insufficient heat on the side wall and nearby parts of the roller kiln, resulting in poor sintering of raw materials.

[0024] 2. The heating and temperature compensation element of the utility model is inserted into a slot connected to the smoke channel, which is a hidden design. This can reduce the lateral space occupied by the roller kiln body and the width design of the roller kiln, thus meeting the demand for production capacity output in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic cross-sectional view of a roller kiln in Example 1;

[0026] Figure 2 is a partial schematic diagram of a cross section of a roller kiln in Example 2;

[0027] Among them, 1 is the roller kiln body, 1.1 is the frame, 1.2 is the insulation layer, 1.3 is the heat insulating layer, 1.4 is the fire layer, 2 is the slot one, 3 is the heating and temperature compensation element one, 4 is the flue gas channel, 5 is the multi-layer and multi-row sagger, 6 is the slot two, and 7 is the heating and temperature compensation element two. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementations.

[0029] Embodiment 1

[0030] like Figure 1 As shown, the roller kiln with a flue and a heating and compensating temperature structure on the side of the utility model comprises a roller kiln body 1, a flue gas channel 4 and a plurality of heating and compensating temperature elements 3, wherein the flue gas channel 4 is arranged on both side walls of the roller kiln body 1, and the flue gas channel 4 is opened along the length direction of the roller kiln body 1. A plurality of heating and compensating temperature elements 3 are arranged along the length direction of the roller kiln body 1 and are arranged on both sides of the roller kiln body 1, and a plurality of heating and compensating temperature elements 3 are inserted into the flue gas channel 4.

[0031] Specifically, the utility model has slots 2 on both sides of the roller kiln body 1, the slots 2 are connected to the smoke channel 4, the heating and temperature compensation element 3 uses a heating tube 1 with a separate temperature control, and the heating and temperature compensation element 3 is inserted into the slot 2 and extends into the smoke channel 4. The heating and temperature compensation element 3 of the utility model can control the temperature separately, so that different side walls of the roller kiln can be temperature-controlled and heated according to actual needs.

[0032] The slot 2 of this embodiment is opened from the frame 1.1, the heat preservation layer 1.2, the heat insulation layer 1.3 and the fire-seeing layer 1.4 of the roller kiln body 1 in sequence, and the slot 2 has an inclined angle with the horizontal plane. Specifically, the slot 2 is inclined downward from the outer wall of the roller kiln body to the inner wall of the roller kiln body 1, and the end of the heating and compensating temperature element 3 inserted in the slot 2 is opposite to the middle position of the multi-layer and multi-row sagger 5 inside the roller kiln body 1. The slot 2 of this embodiment is mainly filled with heat insulation cotton (with elasticity + heat preservation function) to tighten the heating and compensating temperature element 3, and the connection with the heating and compensating temperature element 3 outside the roller kiln body 1 is fixed with a wedge block or a trouser mortise structure.

[0033] In addition, the smoke passage 4 of the present embodiment is a passage expanding toward the inside of the roller kiln body 1, and the angle between the side of the smoke passage 4 and the horizontal plane is 10° to 30°.

[0034] In order to improve the sintering effect of raw materials, the utility model is provided with a heating and temperature compensation module at the top and bottom of the roller kiln body 1. The heating and temperature compensation module includes a slot 2 6 opened on both sides of the roller kiln body 1 and a heating and temperature compensation element 2 7 that can be individually temperature-controlled, and the two ends of the heating and temperature compensation element 2 7 are respectively inserted into the slot 2 6. This design can further supplement the heat in the roller kiln body 1 to improve the heat absorption effect of the raw materials in the multi-layer and multi-row sagger 5.

[0035] Embodiment 2

[0036] The difference between this embodiment and the first embodiment is that: Figure 2 As shown, the smoke channel 4 of this embodiment is an arc-shaped channel opening toward the inside of the roller kiln body 1. This embodiment adopts the smoke channel 4 as an arc-shaped channel opening toward the inside of the roller kiln body, which can facilitate the flow of smoke and better gather smoke and heat, and can also reduce the damage of stress to the roller kiln body 1 during high-temperature sintering.

[0037] The other structures of this embodiment are consistent with those of the first embodiment.

[0038] Embodiment 3

[0039] The difference between this embodiment and the first embodiment is that the slot 1 of this embodiment includes a slot 1 which is inclined downward from the outer wall of the roller kiln body to the inner wall of the roller kiln body and a slot 2 which is inclined upward from the outer wall of the roller kiln body to the inner wall of the roller kiln body, and the slot 1 and the slot 2 are respectively inserted with a heating and temperature compensation element 1. The slot 1 and the slot 2 are arranged in mirror symmetry.

[0040] The other structures of this embodiment are consistent with those of the first embodiment.

[0041] Embodiment 4

[0042] The only difference between this embodiment and the first embodiment is that the slot 1 of this embodiment is inclined upward from the outer wall of the roller kiln body to the inner wall of the roller kiln body.

[0043] The other structures of this embodiment are consistent with those of the first embodiment.

[0044] Embodiment 5

[0045] The only difference between this embodiment and the first embodiment is that a heating and temperature compensation module is provided on the top or bottom of the roller kiln body of this embodiment.

[0046] The other structures of this embodiment are consistent with those of the first embodiment.

[0047] Embodiment 6

[0048] The roller kiln with a side flue and a heating and temperature compensation structure in this embodiment includes a roller kiln body, a flue gas duct and a plurality of heating and temperature compensation elements, wherein the flue gas duct is arranged on a single side wall or both side walls of the roller kiln body, and the flue gas duct is opened along the length direction of the roller kiln body; the plurality of heating and temperature compensation elements are arranged along the length direction of the roller kiln body and are arranged on a single side or both side parts of the roller kiln body, and the plurality of heating and temperature compensation elements are inserted into the flue gas duct.

[0049] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A roller kiln with a side flue and a heating and temperature compensation structure, characterized in that: It comprises a roller kiln body, a smoke channel and a plurality of heating and temperature compensation elements; the smoke channel is arranged on a single side wall or both side walls of the roller kiln body, and the smoke channel is opened along the length direction of the roller kiln body; a plurality of heating and temperature compensation elements are arranged along the length direction of the roller kiln body and arranged on a single side part or both side parts of the roller kiln body, and a plurality of heating and temperature compensation elements are inserted into the smoke channel; The smoke passage is a passage expanding toward the inside of the roller kiln body; or, the smoke passage is an arc-shaped passage opening toward the inside of the roller kiln body.

2. The roller kiln with side flue and heating and temperature compensation structure according to claim 1 is characterized in that: The plurality of heating and temperature compensation elements are inserted into the smoke channel, which means that a slot is opened on one side or both sides of the roller kiln body, the slot is connected to the smoke channel, and the heating and temperature compensation element is inserted into the slot and extends into the smoke channel.

3. The roller kiln with side flue and heating and temperature compensation structure according to claim 2 is characterized in that: The slot 1 is inclined downward from the outer wall of the roller kiln to the inner wall of the roller kiln; Alternatively, the slot 1 is inclined upward from the outer wall of the roller kiln body to the inner wall of the roller kiln body; Alternatively, the slot one includes a slot one inclined downward from the outer wall of the roller kiln body to the inner wall of the roller kiln body and a slot two inclined upward from the outer wall of the roller kiln body to the inner wall of the roller kiln body; a heating and temperature compensation element one is respectively inserted in the slot one and the slot two.

4. The roller kiln with side flue and heating and temperature compensation structure according to claim 3 is characterized in that: The groove 1 and the groove 2 are arranged in mirror symmetry.

5. The roller kiln with side flue and heating and temperature compensation structure according to claim 2 is characterized in that: The end of the first heating and temperature compensation element is opposite to the middle of the multi-layer and multi-row saggers inside the roller kiln body.

6. The roller kiln with side flue and heating and temperature compensation structure according to claim 1, characterized in that: When the flue gas passage is a passage expanding toward the inside of the roller kiln body, the angle between the side of the flue gas passage and the horizontal plane is 10°~30°.

7. The roller kiln with side flue and heating and temperature compensation structure according to claim 2, characterized in that: The slot 1 is opened sequentially from the frame, the heat preservation layer, the heat insulating layer and the fire exposure layer of the roller kiln body.

8. The roller kiln with side flue and heating and temperature compensation structure according to claim 1, characterized in that: A heating and temperature compensation module is arranged on the top and / or bottom of the roller kiln body.

9. The roller kiln with side flue and heating and temperature compensation structure according to claim 8, characterized in that: The heating and temperature compensation module comprises two slots opened on the two side walls of the roller kiln body and two heating and temperature compensation elements which can be individually temperature-controlled; two ends of the two heating and temperature compensation elements are respectively inserted into the two slots.

Images