Material roasting apparatus

Abstract

The present application relates to a kind of material baking equipment, material baking equipment includes: combustion chamber (1) is equipped with air outlet, air return and for introducing outdoor air fresh air port (3);Burner (2) is at least partially arranged in combustion chamber (1), to heat the air in combustion chamber (1);And hot air baking device (8), including the baking chamber (21) of placing the material (13) needing to be baked, with the air inlet of baking chamber (21) and with the air outlet (14) of baking chamber (21) communication, air inlet is communicated with the air outlet of combustion chamber (1), air outlet (14) is communicated with the air return of combustion chamber (1), to at least part of air after heat exchange with material is transported back to combustion chamber. Application the technical scheme of the present application, it is advantageous to reduce the enthalpy of hot gas, also it is advantageous to keep the temperature in air circulation system system to suitable range, from improve the quality and efficiency of baking material.

Description

Technical Field

[0001] The present invention relates to the field of baking equipment, and in particular to a material baking equipment. Background Art

[0002] In the material roasting process, one method involves direct heating with a combustion furnace. However, this method cannot control the temperature and can easily cause the material to burn. Another method uses hot air as a heat transfer medium to exchange heat with the material. This heat exchange method involves installing a sieve plate on the roasting drum, allowing the hot air to pass through the sieve plate into the roasting drum. The hot air then passes through the material layer and directly heats the material, thereby heating and turning the material and maintaining its relative humidity. A closed hot air chamber is installed outside the roasting drum to indirectly heat the material with hot air, facilitating temperature control.

[0003] In the prior art, the first method is that the heat source is in direct contact with the material, which easily causes the material to burn. The second method is that the material is in a relatively closed container, and the heat is discharged slowly, which makes the material easy to catch fire and burn. Summary of the Invention

[0004] The present invention aims to provide a material baking device to improve the problem in the related art that materials are easily burnt.

[0005] According to an embodiment of the present invention, a material baking device is provided, the material baking device comprising:

[0006] The combustion chamber is provided with an air outlet, an air return outlet, and a fresh air outlet for introducing outdoor air;

[0007] a burner disposed at least partially within the combustion chamber to heat air within the combustion chamber; and

[0008] The hot air baking device includes a baking chamber for placing the material to be baked, an air inlet connected to the baking chamber, and an air outlet connected to the baking chamber. The air inlet is connected to the air outlet of the combustion chamber, and the air outlet is connected to the return air outlet of the combustion chamber to transport at least part of the air after heat exchange with the material back to the combustion chamber.

[0009] In some embodiments, the material baking equipment further includes an exhaust flow path connected to the air outlet of the hot air baking device, so as to discharge a portion of the air exhausted from the air outlet into the external environment.

[0010] In some embodiments, the material baking equipment also includes a dust collector, which includes an air inlet for introducing air to be dust-removed and an air outlet for outputting the air after dust removal. The air inlet of the dust collector is connected to the air outlet of the hot air baking device, and the air outlet of the dust collector is connected to the return air outlet of the combustion chamber.

[0011] In some embodiments, the material baking equipment further includes a carrying component for carrying the material to be baked, and the carrying component is at least partially disposed in the baking chamber and is movable relative to the hot air baking device.

[0012] In some embodiments, the material conveying portion includes a vibrating conveyor.

[0013] In some embodiments, the hot air baking device further comprises:

[0014] The air inlet chamber comprises a first side wall, the first side wall being provided with an air inlet communicating with the air outlet of the combustion chamber;

[0015] a plurality of blowing components, each extending from the air inlet chamber to the baking chamber, wherein the air inlets of the plurality of blowing components are arranged side by side along a second side wall of the air inlet chamber, and the second side wall intersects the first side wall; and

[0016] The air guiding component is arranged in the air inlet chamber, and the distance between the air guiding component and the second side wall decreases in the direction away from the air inlet of the air inlet chamber.

[0017] In some embodiments, the hot air baking device further comprises:

[0018] The return air chamber is arranged side by side with the baking chamber and is connected with the return air port of the combustion chamber;

[0019] The return air hole connects the baking chamber and the return air chamber so that the air after heat exchange with the material can return to the return air port of the combustion chamber.

[0020] In some embodiments, the hot air baking device further includes a first plate-shaped component, the first plate-shaped component is located between the return air chamber and the baking chamber, and the plurality of return air holes are unevenly arranged on the first plate-shaped component.

[0021] In some embodiments,

[0022] The flow area of ​​the return air holes located in the middle of the first plate-shaped component is greater than the flow area of ​​the return air holes located at the edge of the first plate-shaped component; and / or

[0023] The arrangement density of the return air holes located in the middle of the first plate-shaped component is greater than the arrangement density of the return air holes located at the edge of the first plate-shaped component.

[0024] In some embodiments, the flow area of ​​the return air holes is adjustable.

[0025] In some embodiments, the hot air baking device further comprises a cover plate covering the return air hole, and the cover plate is rotatable relative to the return air hole to adjust the area of ​​the return air hole covered.

[0026] In some embodiments, the hot air baking device further comprises a blowing component connected to the air inlet of the hot air baking device, and the distance between the outlet of the blowing component and the material is adjustable.

[0027] Applying the technical solution of the present invention, in this embodiment, a certain amount of moisture is generated during the baking process, which increases the enthalpy of the air. This increased enthalpy is detrimental to the removal of moisture from the material. The fresh air vents can add outdoor air to the air circulation system used to heat the material, which helps reduce the enthalpy of the hot air and maintain the temperature in the air circulation system within an appropriate range, thereby improving the quality and efficiency of the baked material.

[0028] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 A schematic structural diagram of a material baking device according to an embodiment of the present invention is shown;

[0031] Figure 2 A schematic side view of the material baking equipment according to an embodiment of the present invention is shown;

[0032] Figure 3 A schematic structural diagram showing a cross section of a material baking device according to an embodiment of the present invention;

[0033] Figure 4 A schematic structural diagram showing a longitudinal section of a material baking device according to an embodiment of the present invention;

[0034] Figure 5 A schematic structural diagram showing a hot air baking device and materials in a material baking device according to an embodiment of the present invention;

[0035] Figure 6 A schematic structural diagram showing a cross-section of a hot air baking device and a material according to an embodiment of the present invention;

[0036] Figure 7 A schematic side view of the hot air baking device of the material baking equipment according to an embodiment of the present invention is shown;

[0037] Figure 8 A structural diagram showing a first plate-shaped component of a hot air baking device according to an embodiment of the present invention;

[0038] Figure 9 A schematic structural diagram showing a second plate-shaped component of a hot air baking device according to an embodiment of the present invention; and

[0039] Figure 10 A schematic structural diagram of a second plate-shaped component and a blowing component mounted thereon of a hot air baking device according to an embodiment of the present invention is shown.

[0040] In the picture:

[0041] 1. Combustion chamber; 2. Burner; 3. Fresh air inlet; 4. Exhaust flow path; 5. Second return air duct; 6. First return air duct; 7. Dust collector; 8. Hot air baking device; 9. Carrying component; 10. Fan; 11. Air supply duct; 12. Blowing component; 13. Material; 14. Air outlet; 15. Air inlet chamber; 16. Air guide component; 17. Return air chamber; 18. Second plate-shaped component; 19. First plate-shaped component; 20. Second mounting hole; 21. Baking chamber; 22. Return air hole; 23. First mounting hole. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Combine Figures 1 to 4 As shown, the material baking equipment of this embodiment includes a combustion chamber 1, a burner 2, and a hot air baking device 8. The combustion chamber 1 is provided with an air outlet, an air return port, and a fresh air port 3 for introducing outdoor air. The burner 2 is at least partially disposed within the combustion chamber 1 to heat the air within the combustion chamber 1. The hot air baking device 8 includes a baking chamber 21 for placing the material 13 to be baked, an air inlet communicating with the baking chamber 21, and an air outlet 14 communicating with the baking chamber 21. The air inlet of the hot air baking device 8 is communicated with the air outlet of the combustion chamber 1, and the air outlet 14 is communicated with the air return port of the combustion chamber 1 to transport at least part of the air after exchanging heat with the material back to the combustion chamber.

[0044] In this embodiment, a certain amount of moisture is generated during the baking process of the material 13, which increases the enthalpy of the air. This increase in enthalpy is detrimental to the removal of moisture from the material. The fresh air vent 3 can replenish outdoor fresh air into the air circulation system used to heat the material 13, which helps reduce the enthalpy of the hot air and maintain the temperature in the air circulation system within a suitable range, thereby improving the quality and efficiency of the baked material.

[0045] The material baking equipment also includes an exhaust flow path 4 connected to the air outlet 14 of the hot air baking device 8 to discharge a portion of the air discharged from the air outlet 14 into the external environment. The exhaust flow path 4 can discharge hot air with high moisture content to the outside, which is beneficial to reducing the enthalpy value of the hot air in the air circulation system, thereby improving the quality and efficiency of the baking materials.

[0046] The material baking equipment also includes a dust collector 7, which includes an air inlet for introducing air to be dust-removed and an air outlet for outputting the air after dust removal. The air inlet of the dust collector 7 is connected to the air outlet 14 of the hot air baking device 8, and the air outlet of the dust collector 7 is connected to the return air outlet of the combustion chamber 1.

[0047] like Figures 1 to 3 As shown, the material baking equipment further includes a first return air duct 6 , the air inlet of the first return air duct 6 is connected to the air outlet 14 of the hot air baking device 8 , and the air outlet of the first return air duct 6 is connected to the air inlet of the dust collector 7 .

[0048] The material baking equipment further includes a second return air duct 5 , the air inlet of the second return air duct 5 is connected to the air outlet of the dust collector 7 , and the air outlet of the second return air duct 5 is connected to the return air inlet of the combustion chamber 1 .

[0049] The material baking equipment also includes a fan 10 that drives air to circulate between the combustion chamber 1 and the baking chamber 21. The air inlet of the fan 10 is connected to the air outlet of the combustion chamber 1, and the air outlet of the fan 10 is connected to the air inlet of the hot air baking device 8 through an air supply pipe 11.

[0050] The material baking equipment further includes a carrying component 9 for carrying the material to be baked. The carrying component 9 is at least partially disposed in the baking chamber 21 and is movable relative to the hot air baking device 8 .

[0051] In some embodiments, the supporting member 9 includes a vibrating conveyor. When the material 13 is conveyed by the vibrating conveyor, the material 13 can be turned over and spread evenly on the supporting member, which is conducive to achieving uniform heating of the material.

[0052] Figure 5 The hot air baking device and the schematic diagram of the material structure of this embodiment are shown. Figure 6 The hot air baking device of this embodiment and the schematic diagram of the cross section of the material are shown. Figure 7 A side structural schematic diagram of the hot air baking device of this embodiment is shown.

[0053] Combine Figure 3 as well as Figures 5 to 7As shown, the hot air baking device of this embodiment includes an air inlet chamber 15, multiple blowing components 12, and an air guide component 16. The air inlet chamber 15 includes a first sidewall, which is provided with an air inlet that communicates with the air outlet of the combustion chamber 1. The air inlet chamber 15 and the baking chamber 21 are arranged side by side along the extension direction of the blowing components 12.

[0054] The plurality of blowing components 12 extend from the air inlet chamber 15 to the baking chamber 21. The air inlets of the plurality of blowing components 12 are arranged side by side along the second side wall of the air inlet chamber 15. The second side wall intersects the first side wall. In some embodiments, the first side wall is perpendicular to the second side wall.

[0055] The air guide member 16 is disposed within the air inlet chamber 15. The distance between the air guide member 16 and the second side wall decreases as it moves away from the air inlet of the air inlet chamber 15. This directs the hot air entering the air inlet chamber 15 toward the center of the air inlet chamber 15. This helps to even out the air flow from the multiple blowing members 12, thereby resolving the problem of uneven heating of the material. The air guide member 16 regulates the air pressure and air volume at the air inlet of the blowing member 12, thereby ensuring a more balanced air flow and air volume across the multiple blowing members 12, thus resolving the problem of uneven heating of the material.

[0056] like Figure 3 As shown, air inlets are provided on opposite sides of the air inlet chamber 15, and the air guide members 16 are provided one-to-one corresponding to the air inlets of the air inlet chamber 15. The distance between the air guide members 16 and the bottom wall of the air inlet chamber 15 decreases in the direction away from the corresponding air inlet.

[0057] Each air inlet of the air inlet chamber 15 is correspondingly provided with an air supply pipeline 11 and a fan 10 , and the air inlet chamber 15 is connected to the corresponding fan 10 through the air supply pipeline 11 .

[0058] The hot air baking device also includes a return air chamber 17 and a return air hole 22. The return air chamber 17 is arranged side by side with the baking chamber 21 and is connected to the hot air baking device's air outlet 14. The return air hole 22 connects the baking chamber 21 and the return air chamber 17, allowing the air that has exchanged heat with the material 13 to return to the return air outlet of the combustion chamber 1.

[0059] The hot air baking device 8 further comprises a first plate-shaped component 19, which is located between the return air chamber 17 and the baking chamber 21. Figure 8 As shown, a plurality of return air holes 22 are unevenly arranged on the first plate-shaped component 19. The first plate-shaped component 19 has a return air chamber 17 and a baking chamber 21 on both sides thereof. The first plate-shaped component 19 is also provided with a first mounting hole for mounting the blowing component 12.

[0060] like Figure 3 As shown, the side walls on both sides of the return air chamber 17 are provided with air outlets, and each air outlet is connected to the return air outlet of the combustion chamber 1 through a return air pipeline.

[0061] The hot air baking device 8 also includes a second plate-shaped component 18 between the air inlet chamber 15 and the return air chamber 17, Figure 9 and Figure 10 As shown, the second plate-shaped component 18 is provided with a second mounting hole for mounting the blowing component 12 .

[0062] In this embodiment, the air inlet chamber 15, the return air chamber 17, and the baking chamber 21 are arranged side by side in a vertical direction, and the blowing member 12 extends from the air inlet chamber 15 to the baking chamber 21. The plurality of blowing members 12 are arranged side by side along the second side wall of the air inlet chamber 15. Hot air introduced by the air inlet provided on the first side wall of the air inlet chamber 15 enters the inlet of the blowing member 12 under the action of the air guide member 16.

[0063] In this embodiment, the flow area of ​​the return air holes 22 located in the middle of the first plate-shaped component 19 is greater than the flow area of ​​the return air holes 22 located at the edge of the first plate-shaped component 19 .

[0064] In other embodiments, the arrangement density of the return air holes 22 located in the middle of the first plate-shaped component 19 is greater than the arrangement density of the return air holes 22 located at the edge of the first plate-shaped component 19 .

[0065] Since the return air holes 22 in the first plate-shaped component 19 have a large flow area or a high arrangement density, the heat dissipation in the middle and the edge of the baking chamber 21 is uniform, so that the material 13 is heated evenly, which is beneficial to ensuring the baking effect of the material and reducing the problem of burning caused by excessive temperature of the local material.

[0066] In some embodiments, the flow area of ​​the return air holes 22 is adjustable, so that the flow area of ​​the return air holes 22 at various positions in the return air chamber 17 can be adjusted according to demand.

[0067] In some embodiments, the hot air baking device 8 further includes a cover plate covering the return air hole 22 , and the cover plate can be rotated relative to the return air hole 22 to adjust the area of ​​the return air hole 22 covered.

[0068] In some embodiments, the hot air baking device 8 also includes a blowing component 12 connected to the air inlet of the hot air baking device 8. The distance between the outlet of the blowing component 12 and the material 13 is adjustable to adjust the position of the blowing component 12 and the material according to actual needs so that the material at each position in the baking chamber 21 is heated evenly.

[0069] In this embodiment, the amount of heat applied to the material 13 can be adjusted by adjusting the flow area of ​​the return air holes 22 and the spacing between the blowing member 12 and the material 13, thereby ensuring uniform heating of the material 13 at all locations within the baking chamber 21. Furthermore, in this embodiment, the return air holes 22 are unevenly arranged on the first plate-shaped member, which also facilitates uniform heating of the material.

[0070] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A material baking device, characterized in that: include: A combustion chamber (1) is provided with an air outlet, an air return outlet, and a fresh air outlet (3) for introducing outdoor air; a burner (2) at least partially disposed in the combustion chamber (1) for heating the air in the combustion chamber (1); and A hot air baking device (8) comprises a baking chamber (21) for placing a material (13) to be baked, an air inlet communicated with the baking chamber (21), and an air outlet (14) communicated with the baking chamber (21), wherein the air inlet is communicated with the air outlet of the combustion chamber (1), and the air outlet (14) is communicated with the return air port of the combustion chamber (1) so as to transport at least part of the air after heat exchange with the material back to the combustion chamber. The fresh air inlet (3) is used to supply outdoor fresh air to the air circulation system used for heating materials; The hot air baking device (8) further comprises: An air inlet chamber (15) comprises a first side wall, the first side wall being provided with an air inlet communicating with the air outlet of the combustion chamber (1); a plurality of blowing components (12), each extending from the air inlet chamber (15) to the baking chamber (21), the air inlets of the plurality of blowing components (12) being arranged side by side along the second side wall of the air inlet chamber (15), the first side wall being perpendicular to the second side wall; and An air guide component (16) is provided in the air inlet chamber (15), and the distance between the air guide component and the second side wall decreases in a direction away from the air inlet of the air inlet chamber (15). The material baking equipment further comprises an exhaust flow path (4) connected to the air outlet (14) of the hot air baking device (8) to discharge a portion of the air exhausted from the air outlet (14) into the external environment; The hot air baking device also includes: a return air chamber (17), arranged side by side with the baking chamber (21) and connected to the return air port of the combustion chamber (1); The return air hole (22) connects the baking chamber (21) and the return air chamber (17) so that the air after heat exchange with the material (13) returns to the return air port of the combustion chamber (1). The hot air baking device (8) further comprises a first plate-shaped component (19), the first plate-shaped component (19) being located between the return air chamber (17) and the baking chamber (21), and the plurality of return air holes (22) being unevenly arranged on the first plate-shaped component (19). The flow area of ​​the return air hole (22) located in the middle of the first plate-shaped component (19) is greater than the flow area of ​​the return air hole (22) located at the edge of the first plate-shaped component (19); and / or The arrangement density of the return air holes (22) located in the middle of the first plate-shaped component (19) is greater than the arrangement density of the return air holes (22) located at the edge of the first plate-shaped component (19).

2. The material baking equipment according to claim 1, characterized in that: The device further comprises a dust collector (7), the dust collector (7) comprising an air inlet for introducing air to be dust-removed and an air outlet for outputting the dust-removed air, the air inlet of the dust collector (7) being connected to the air outlet (14) of the hot air baking device (8), and the air outlet of the dust collector (7) being connected to the return air outlet of the combustion chamber (1).

3. The material baking equipment according to claim 1, characterized in that: It also includes a carrying component (9) for carrying the material to be baked, wherein the carrying component (9) is at least partially arranged in the baking chamber (21) and is movable relative to the hot air baking device (8).

4. The material baking equipment according to claim 3, characterized in that: The bearing component (9) comprises a vibrating conveyor.

5. The material baking equipment according to claim 1, characterized in that: The flow area of ​​the return air hole (22) is adjustable.

6. The material baking equipment according to claim 1, characterized in that: The hot air baking device (8) further comprises a cover plate arranged on the return air hole (22), wherein the cover plate can be rotated relative to the return air hole (22) to adjust the area of ​​the return air hole (22) covered.

7. The material baking equipment according to claim 1, characterized in that: The hot air baking device (8) further comprises a blowing component (12) connected to the air inlet of the hot air baking device (8), and the distance between the outlet of the blowing component (12) and the material (13) is adjustable.

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