Flow guide type powder calcining furnace

Abstract

The invention provides a flow guide type powder calcining furnace which comprises a furnace body and a flow guide assembly, the furnace body is provided with a cavity, a feeding port and a discharging port, the flow guide assembly is arranged in the cavity and divides the cavity into a first cavity and a second cavity, the first cavity and the second cavity are communicated through the flow guide assembly, the first cavity is communicated with the feeding port, and the second cavity is communicated with the discharging port; the flow guide assembly comprises a plurality of flow guide parts which are sequentially arranged at intervals from the upper end to the lower end of the furnace body, each flow guide part is provided with a flow guide channel, and each flow guide channel is provided with an inlet and an outlet which communicate with each other. The outlet of the flow guide channel of the first flow guide piece and the inlet of the flow guide channel of the second flow guide piece are at least partially staggered. Therefore, the powder needs to pass through more paths, enough retention time of the powder in the hearth can be guaranteed, the powder can be diffused more sufficiently and uniformly, uniform flowing and heat treatment of the powder material in the furnace are realized, and the calcining efficiency and the product quality of the powder are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of powder material processing, and more particularly, to a flow-guided powder calcination furnace. Background Art

[0002] A powder calcination furnace is a device used for calcining powder materials, usually used in industrial production. Such a furnace can improve the calcination efficiency and product quality. After the powder enters the cavity of the furnace body, it is calcined, and finally the processed powder is obtained.

[0003] The existing powder is simply fed into the inner cavity and then quickly flows out with the air flow, which causes the powder to not be fully calcined, resulting in poor quality of the processed powder. Therefore, it has become a technical difficulty that needs to be solved urgently. Summary of the Invention

[0004] An embodiment of the present invention provides a flow-guided powder calcination furnace to solve the above technical problems.

[0005] The embodiment of the present invention realizes the above object through the following technical solutions.

[0006] The embodiment of the present invention provides a flow-guided powder calcination furnace, which includes: A furnace body, which is provided with a cavity, a feed inlet and a discharge outlet. The discharge outlet is communicated with the feed inlet via the cavity. The furnace body has opposite upper and lower ends. The feed inlet is arranged at the upper end, and the discharge outlet is arranged at the lower end; A flow guiding component, which is arranged in the cavity. The flow guiding component divides the cavity into a first chamber and a second chamber. The first chamber and the second chamber are arranged at intervals in the direction from the upper end to the lower end. The first chamber and the second chamber are communicated via the flow guiding component. The first chamber is communicated with the feed inlet, and the second chamber is communicated with the discharge outlet; Wherein, the flow guiding component includes a plurality of flow guiding members, and the plurality of flow guiding members are arranged at intervals in sequence from the upper end to the lower end. Each flow guiding member is provided with a flow guiding channel, and the flow guiding channel has a connected inlet and outlet. The outlet of the flow guiding channel of the first flow guiding member among the plurality of flow guiding members is at least partially staggered with the inlet of the flow guiding channel of the second flow guiding member.

[0007] In some embodiments, the first flow guiding member and the second flow guiding member are arranged adjacent to each other.

[0008] In some embodiments, in the direction from the first end to the second end, the edge of the first flow guiding member that forms the outlet of the flow guiding channel has a first projection; in the direction from the first end to the second end, the edge of the second flow guiding member that forms the inlet of the flow guiding channel has a second projection, and the first projection and the second projection are spaced apart from each other.

[0009] In some embodiments, both the first flow guiding member and the second flow guiding member are provided with a plurality of spaced-apart partition portions. The partition portions of the first flow guiding member and the partition portions of the second flow guiding member are both disposed in the region between the first flow guiding member and the second flow guiding member, and the partition portions of the first flow guiding member and the partition portions of the second flow guiding member are alternately and spacedly arranged.

[0010] The partition portion of the first flow guiding member is adapted to the size of the flow guiding channel of the second flow guiding member; the partition portion of the second flow guiding member is adapted to the size of the flow guiding channel of the first flow guiding member; wherein, at least one of the first flow guiding member and the second flow guiding member is slidably disposed in the furnace body, and the first flow guiding member and the second flow guiding member can approach each other so that the partition portion of the first flow guiding member enters the flow guiding channel of the second flow guiding member, and the partition portion of the second flow guiding member enters the flow guiding channel of the first flow guiding member, thereby preventing the blockage of the flow guiding channel.

[0011] In some embodiments, a plurality of baffles are provided in the flow guiding channel of at least one of the plurality of flow guiding members. The flow guiding channel has opposite first and second walls. The plurality of baffles are spaced along the upper end to the lower end. The first of the adjacent two of the plurality of baffles is disposed on the first wall, and the second baffle is disposed on the second wall.

[0012] In some embodiments, in the direction from the upper end to the lower end, the projection of the first baffle of the adjacent two of the plurality of baffles overlaps partially with the projection of the second baffle; and / or, Each of the plurality of baffles has a fixed end and a free end. The fixed end is connected to the first wall or the second wall, and the free end is inclined downward from the first end to the second end relative to the fixed end.

[0013] In some embodiments, a partition cavity is formed between any two adjacent ones of the plurality of flow guiding members. The flow guiding type powder calcination furnace further includes a blower, and the blower has a plurality of air supply portions, and each of the plurality of air supply portions corresponds to one of the partition cavities.

[0014] In some embodiments, the blower supplies air to each of the partition cavities at a preset interval.

[0015] In some embodiments, the flow-guided powder calcination furnace includes a first burner and a second burner. The first burner corresponds to the first chamber to calcine the powder in the first chamber, and the second burner corresponds to the second chamber to calcine the powder in the second chamber. The volume of the second chamber is larger than that of the first chamber; and / or, The flow-guided powder calcination furnace includes a heat exchanger, which is arranged corresponding to the second chamber to recover the heat of the powder in the second chamber.

[0016] For the flow-guided powder calcination furnace provided by the embodiment of the present invention, the flow guiding assembly divides the chamber into a first chamber and a second chamber. The first chamber and the second chamber are arranged at intervals from the upper end to the lower end. The first chamber and the second chamber are communicated via the flow guiding assembly. The first chamber is communicated with the feed port, and the second chamber is communicated with the discharge port. The flow guiding assembly includes a plurality of flow guiding members, and the plurality of flow guiding members are arranged at intervals in sequence from the upper end to the lower end. Each flow guiding member is provided with a flow guiding channel, and the flow guiding channel has a communicating inlet and outlet. The outlet of the flow guiding channel of the first flow guiding member among the plurality of flow guiding members is at least partially staggered from the inlet of the flow guiding channel of the second flow guiding member. For the flow-guided powder calcination furnace provided by the present invention, by at least partially staggering the outlet of the flow guiding channel of the first flow guiding member among the plurality of flow guiding members from the inlet of the flow guiding channel of the second flow guiding member, when the powder flows out through one flow guiding channel, the powder will not flow directly into the next flow guiding channel. It needs to change its path. For example, it needs to turn from the original path before flowing into the inlet of the next flow guiding channel. In this way, when the powder has a certain flow rate, it needs to pass through more paths, which can ensure that all the powder has sufficient residence time in the furnace chamber, and also enables the powder to be more fully and evenly diffused. That is, by optimizing the design of the flow guiding assembly, the uniform flow and heat treatment of the powder material in the furnace are realized, thereby improving the calcination efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Fig. shows a schematic cross-sectional structure diagram of a flow-guided powder calcination furnace provided by an embodiment of the present invention.

[0019] Figure 2 Fig. shows a partial cross-sectional schematic diagram of another flow-guided powder calcination furnace provided by an embodiment of the present invention.

[0020] Figure 3 Another partial sectional schematic view of the provided flow-guided powder calcination furnace according to an embodiment of the present invention is shown.

[0021] Figure 4 A sectional structural schematic view of yet another flow-guided powder calcination furnace according to an embodiment of the present invention is shown. Specific Embodiments

[0022] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Please refer to Figure 1 , an embodiment of the present invention provides a flow-guided powder calcination furnace 10, and the flow-guided powder calcination furnace 10 includes: a furnace body 11 and a flow guiding assembly 12. The flow guiding assembly 12 is disposed inside the furnace body 11, and the flow guiding assembly 12 has the functions of guiding the flow and extending the powder flow path. The flow-guided powder calcination furnace 10 improves the calcination efficiency and product quality by optimizing the gas flow and heat transfer. The flow-type powder calcination furnace belongs to the technical field of powder material processing, which involves the heat treatment of powder materials and is usually used in industries such as powder metallurgy and ceramic manufacturing.

[0025] Specifically, in this embodiment, the furnace body 11 is provided with a cavity 113, a feed inlet 111 and a discharge outlet 112, and the discharge outlet 112 communicates with the feed inlet 111 via the cavity 113. The furnace body 11 has opposite upper end 114 and lower end 115, the feed inlet 111 is provided at the upper end 114, and the discharge outlet 112 is provided at the lower end 115.

[0026] It should be noted that when the furnace body 11 is arranged vertically, the upper end 114 and the lower end 115 are respectively the two ends of the furnace body 11 along the vertical direction. The powder is fed into the cavity 113 of the furnace body 11 from the feed inlet 111, and after being calcined in the cavity 113, the powder is sent out from the discharge outlet 112. Among them, the powder can be metal, ceramic powder or others.

[0027] In this embodiment, the diversion assembly 12 is disposed in the cavity 113. The diversion assembly 12 divides the cavity 113 into a first cavity 1131 and a second cavity 1132. The first cavity 1131 and the second cavity 1132 are arranged at intervals from the upper end 114 to the lower end 115. The first cavity 1131 and the second cavity 1132 are communicated via the diversion assembly 12. The first cavity 1131 is communicated with the feed inlet 111, and the second cavity 1132 is communicated with the discharge outlet 112.

[0028] In this embodiment, the diversion assembly 12 includes a plurality of diversion members 121. The plurality of diversion members 121 are sequentially arranged at intervals from the upper end 114 to the lower end 115. Each diversion member 121 is provided with a diversion channel 1211. The diversion channel 1211 has a communicating inlet 1212 and an outlet 1214. The outlet 1214 of the diversion channel 1211 of the first diversion member 121 among the plurality of diversion members 121 is at least partially staggered from the inlet 1212 of the diversion channel 1211 of the second diversion member 121.

[0029] It should be noted that in the direction from the upper end 114 to the lower end 115, the edge of the first diversion member 121 surrounding the outlet 1214 of the diversion channel 1211 has a first projection; in the direction from the upper end 114 to the lower end 115, the edge of the second diversion member 121 surrounding the inlet 1212 of the diversion channel 1211 has a second projection. "At least partially staggered arrangement" means that the area surrounded by the first projection is not completely within the area surrounded by the second projection, that is, the area surrounded by the first projection and the area surrounded by the second projection partially overlap, or are completely separated from each other.

[0030] In some embodiments, the first diversion member 121 and the second diversion member 121 are arranged adjacent to each other. In this way, the diversion channels 1211 of two adjacent ones among the plurality of diversion members 121 are staggered, which can increase the flow path of the powder between two adjacent ones among the plurality of diversion members 121. In this way, the powder basically does not flow directly into the next diversion channel 1211, and it needs to change its original path (as Figure 1 shown). For example, it needs to turn from the original path before flowing into the inlet 1212 of the next diversion channel 1211. In this way, the powder needs to pass through more paths. Compared with the case of the same flow rate, compared with the way of flowing directly into the next inlet path, the path that the powder flows through in this solution is longer, and the residence time will be longer. In this way, it can almost ensure that all the powder has enough residence time in the furnace chamber. As an example, the first diversion member 121 and the second diversion member 121 can be any two adjacent ones among the plurality of diversion members 121, that is, the diversion channels 1211 of any two adjacent ones among the plurality of diversion members 121 are staggered, which can effectively increase the entire flow path of the powder, effectively increase the residence time of the powder in the furnace body 11, and enable it to be fully calcined.

[0031] In some embodiments, in the direction from the upper end 114 to the lower end 115, the edge of the outlet 1214 of the first flow guiding member 121 that encloses the flow guiding channel 1211 has a first projection; in the direction from the upper end 114 to the lower end 115, the edge of the inlet 1212 of the second flow guiding member 121 that encloses the flow guiding channel 1211 has a second projection, and the first projection and the second projection are spaced apart from each other. It can be understood that the outlet 1214 of the first flow guiding member 121 that encloses the flow guiding channel 1211 and the inlet 1212 of the second flow guiding member 121 are staggered from each other. The first projection and the second projection may be continuous with each other but do not overlap, or there is a certain distance between the first projection and the second projection. In this way, the powder flowing out from the outlet 1214 of the flow guiding channel 1211 of the first flow guiding member 121 will not easily and directly fall into the inlet 1212 of the flow guiding channel 1211 of the second flow guiding member 121, but needs to change its original path after flowing out from the outlet 1214 of the flow guiding channel 1211 of the first flow guiding member 121. That is, the powder needs to change a longer path before it can continue to flow into the inlet 1212 of the flow guiding channel 1211 of the second flow guiding member 121, further increasing the duration of the powder flow path.

[0032] In some embodiments, as Figure 2 shown, both the first flow guiding member 121 and the second flow guiding member 121 are provided with a plurality of spaced-apart partition portions 1214. The partition portions 1214 of the first flow guiding member 121 and the partition portions 1214 of the second flow guiding member 121 are both arranged in the area between the first flow guiding member 121 and the second flow guiding member 121, and the partition portions 1214 of the first flow guiding member 121 and the partition portions 1214 of the second flow guiding member 121 are alternately arranged at intervals. The partition portion 1214 may be a sheet structure. In this way, the plurality of partition portions 1214 can divide the area between the first flow guiding member 121 and the second flow guiding member 121 into a plurality of channels, and the plurality of channels are communicated with each other. It can be understood that the area between the first flow guiding member 121 and the second flow guiding member 121 can form a plurality of stepped channels, so that the area between the two flow guiding members 121 forms a more winding channel. The powder needs to change its direction multiple times during the flow path, so that the powder will flow through more paths and stay for a longer time in the area between the first flow guiding member 121 and the second flow guiding member 121, enabling the powder to be calcined fully and evenly.

[0033] In some embodiments, as Figure 2As shown, the horizontal projections of two adjacent ones among multiple spaced-apart partition parts 1214 can partially overlap, so that each partition part 1214 can guide the direction of the powder and cause the powder to change its original flow path. In some embodiments, when there is a blowing structure corresponding to the area between the first flow guiding member 121 and the second flow guiding member 121, when the blowing structure blows air into the area between the first flow guiding member 121 and the second flow guiding member 121 (its main function is to supply oxygen for the calcination of the powder and prevent the powder from accumulating), the air flow can slowly flow through the entire area between the first flow guiding member 121 and the second flow guiding member 121. When the air flow blows against the partition part 1214, it will be blocked by the end of the partition part 1214. As a result, after the air flow flows into the area between two partition parts 121, the area between the two partition parts 121 forms a shape similar to a "canyon", causing the air flow to form a backflow (similar to a small vortex) in this area, so that the powder is slowly dispersed, which is beneficial to increasing the residence time of the powder. In other embodiments, the partition part 1214 can be in an arc structure, such as a circular arc structure, which is conducive to the formation of a vortex of the powder in the air flow. The partition part 1214 can be bent in an arc shape from the direction of the upper end 114 and the lower end 115, or bent in an arc shape from the horizontal direction.

[0034] In some embodiments, such as Figure 2As shown, the partition portion 1214 of the first flow guide member 121 is adapted to the size of the flow guide channel 1211 of the second flow guide member 121; the partition portion 1214 of the second flow guide member 121 is adapted to the size of the flow guide channel 1211 of the first flow guide member 121; wherein, at least one of the first flow guide member 121 and the second flow guide member 121 is slidably disposed in the furnace body 11. It should be noted that both of them can be slidably disposed in the furnace body 11, or one of them is slidably disposed in the furnace body 11, and the sliding directions of both are substantially the same as the direction from the first end 114 to the second end 115. The first flow guide member 121 and the second flow guide member 121 can approach each other so that the partition portion 1214 of the first flow guide member 121 enters the flow guide channel 1211 of the second flow guide member 121, and the partition portion 1214 of the second flow guide member 121 enters the flow guide channel 1211 of the first flow guide member 121, thereby preventing the blockage of the flow guide channel 1211. Specifically, the outer diameter dimensions of the partition portion 1214 and the flow guide channel 1211 can be adapted. As an example, the flow guide channel 1211 can be a straight hole structure, the partition portion 1214 can be a columnar structure, the outer diameter dimension of the partition portion 1214 is adapted to the inner diameter dimension of the flow guide channel 1211, and the outer diameter dimension of the partition portion 1214 can be slightly smaller than the inner diameter dimension of the flow guide channel 1211. For example, the outer diameter dimension of the partition portion 1214 is 0.8 to 0.9 times the inner diameter dimension of the flow guide channel 1211, so that the partition portion 1214 can enter the flow guide channel 1211 more smoothly. The length of the partition portion 1214 can be consistent with the depth of the flow guide channel 1211. During long-term use, when calcining the powder in the furnace body 11 for a long time, the powder may accumulate in the flow guide channel 1211, or the powder remaining in the flow guide channel 1211 in the furnace body 11 may agglomerate in the flow guide channel 1211 due to dampness or other reasons, which easily causes the flow guide channel 1211 of the flow guide member 121 to be partially blocked by the powder, thus easily affecting the subsequent powder flow rate and processing. Since the first flow guide member 121 and the second flow guide member 121 can approach each other so that the partition portion 1214 of the first flow guide member 121 enters the flow guide channel 1211 of the second flow guide member 121, and the partition portion 1214 of the second flow guide member 121 enters the flow guide channel 1211 of the first flow guide member 121, the partition portion 1214 can also be used as a dredging structure, and the partition portion 1214 entering the flow guide channel 1211 can dredge the accumulated powder, thereby ensuring the smoothness of the flow guide channel 1211.

[0035] In some embodiments, such as Figure 3As shown, a plurality of baffles 1215 are provided in the flow guiding channel 1211 of at least one of the plurality of flow guiding members 121. The flow guiding channel 1211 has opposite first wall 1216 and second wall 1217. The plurality of baffles 1215 are arranged at intervals from the upper end 114 to the lower end 115. The first baffle 1215 of two adjacent ones among the plurality of baffles 1215 is arranged on the first wall 1216, and the second baffle 1215 is arranged on the second wall 1217. It can be understood that two adjacent ones among the plurality of baffles 1215 are alternately arranged on the first wall 1216 and the second wall 1217, so that the flow guiding channel 1211 is divided into a plurality of small sections of channels, and each section of the channel is meandering. In this way, the powder needs more time to pass through the meandering channel, further ensuring the calcination time of the powder.

[0036] In some embodiments, in the direction from the upper end 114 to the lower end 115, the projection of the first baffle 1215 of two adjacent ones among the plurality of baffles 1215 overlaps with the projection of the second baffle 1215 in part; in this way, the plurality of baffles 1215 can divide the flow guiding channel 1211 into multiple sections of channels, for example, multiple stepped channels can be formed, making the entire flow guiding channel 1211 meandering, so that the powder flows in a winding manner in the flow guiding channel 1211, which is beneficial to increasing the calcination time of the powder. And / or, Each of the plurality of baffles 1215 has a fixed end (not shown in the figure) and a free end (not shown in the figure). The fixed end is connected to the first wall 1216 or the second wall 1217, and the free end is inclined downward from the upper end 114 to the lower end 115 relative to the fixed end. By arranging each of the plurality of baffles 1215 to be inclined downward, the powder falling on the baffle 1215 can slide down along the inclination angle of the baffle 1215 and then slide into the next baffle 1215. In this way, the powder can slide layer by layer, so that the powder is not easily accumulated in the flow guiding channel 1211. In some embodiments, the baffle 1215 can be in a curved structure. For example, it can be bent downward in the direction from the first end 114 to the second end 115, or bent upward in the direction from the second end 115 to the first end 114. In this way, a vortex will be formed in the air flow, which not only makes the powder be fully and evenly stirred, but also is beneficial to increasing the residence time of the powder.

[0037] In some embodiments, a separation cavity 1218 is formed between any two adjacent ones of the plurality of flow guiding members 121. The flow guiding type powder calcination furnace 10 further includes a blower 14. The blower 14 has a plurality of air supply parts 141, and each of the plurality of air supply parts 141 corresponds to a separation cavity 1218. In this way, the blower 14 can supply air to fully mix the powder in each separation cavity 1218, so that the powder is fully calcined, and the original flow direction of the powder is changed, so that the powder flows horizontally, which can increase the residence time of the powder in each separation cavity 1218.

[0038] In some embodiments, the blower 14 supplies air to each partition chamber 1218 at a preset interval. The blower 14 can be a pulsating blower. The blower 14 can perform pulsating air supply in an alternating manner of on - off - on - off, which can effectively supply oxygen and prevent dust accumulation.

[0039] In some embodiments, as Figure 4 shown, the flow - guiding powder calcination furnace 10 includes a first burner 191 and a second burner 192. The first burner 191 corresponds to the first chamber 1131 to calcine the powder in the first chamber 1131, and the second burner 192 corresponds to the second chamber 1132 to calcine the powder in the second chamber 1132. The volume of the second chamber 1132 is larger than that of the first chamber 1131. During processing, since the powder just enters the first chamber 1131, it will be preliminarily calcined in the first chamber 1131. Due to the fact that the volume of the second chamber 1132 is larger than that of the first chamber 1131, after a period of time, the calcined powder can have more space to gather in the second chamber 1132, so as to be further fully calcined and then be smoothly sent out of the discharge port 112. The second chamber 1132 can be of an inverted conical structure, which can make more powder converge to the discharge port 112. And / or, In some embodiments, as Figure 4 shown, the flow - guiding powder calcination furnace 10 includes a heat exchanger 193. The heat exchanger 193 is arranged corresponding to the second chamber 1132 to recover the heat of the powder in the second chamber 1132. By setting the heat exchanger 193, the waste heat of the powder in the second chamber 1132 can be collected, and the collected heat can be used for other purposes (for example, heating water or other things). In some embodiments, since the volume of the second chamber 1132 is larger than that of the first chamber 1131, this enables the heat exchanger 193 to have a larger setting range and can better collect waste heat.

[0040] In some embodiments, the flow - guiding powder calcination furnace 10 includes a feeding auger 15 and a discharging auger 16. The feeding auger 15 is connected to the feeding port 111, and the discharging auger 16 is connected to the discharging port 112. By setting the feeding auger 15 and the discharging auger 16, the powder fed in and sent out is fully stirred to make it uniform.

[0041] In some embodiments, the flow - guiding powder calcination furnace 10 includes a valve 17 and an exhaust fan 18. The exhaust fan 18 is communicated with the second chamber 1132, and the valve 17 is communicated with the first chamber 1131. After the exhaust fan 18 is turned on, an air flow is formed in the furnace body 11, and the powder can move along with the air flow. The valve 17 can be a rotary valve. The main function of the valve 17 is to control the feeding amount and also plays a role in fire prevention.

[0042] When ultrafine powder enters an existing rotary furnace or other furnace chamber, it will be blown around by the air inlet system and then sucked away by the exhaust system without being fully calcined. If a fluidized bed is used for calcination, not only will some uncalcined powder be sucked away, resulting in fuel waste, but also the product will be contaminated. Therefore, in the embodiment of the present invention, in the flow-guiding type powder calcination furnace 10, the flow-guiding assembly 12 divides the cavity 113 into a first cavity 1131 and a second cavity 1132. The first cavity 1131 and the second cavity 1132 are arranged at intervals from the upper end 114 to the lower end 115. The first cavity 1131 and the second cavity 1132 are communicated via the flow-guiding assembly 12. The first cavity 1131 is communicated with the feed inlet 111, and the second cavity 1132 is communicated with the discharge outlet 112. The flow-guiding assembly 12 includes a plurality of flow-guiding members 121. The plurality of flow-guiding members 121 are arranged at intervals in sequence in the direction from the upper end 114 to the lower end 115. Each flow-guiding member 121 is provided with a flow-guiding channel 1211. The flow-guiding channel 1211 has a connected inlet 1212 and an outlet 1214. The outlet 1214 of the flow-guiding channel 1211 of the first flow-guiding member 121 among the plurality of flow-guiding members 121 is at least partially staggered from the inlet 1212 of the flow-guiding channel 1211 of the second flow-guiding member 121. In the flow-guiding type powder calcination furnace 10 of the present invention, the outlet 1214 of the flow-guiding channel 1211 of the first flow-guiding member 121 among the plurality of flow-guiding members 121 is at least partially staggered from the inlet 1212 of the flow-guiding channel 1211 of the second flow-guiding member 121. In this way, after the powder flows out through one flow-guiding channel 1211, due to the staggering of the inlets 1212 and outlets 1214 of the flow-guiding channels 1211 of at least two of the plurality of flow-guiding members 121, the powder will not flow directly into the next flow-guiding channel 1211. It needs to change its path. For example, it needs to turn from the original path before flowing into the inlet 1212 of the next flow-guiding channel 1211. In this way, at a certain flow rate, the powder needs to pass through more paths, which can ensure that all the powder has sufficient residence time in the furnace chamber to be fully calcined, save the fuel for calcination, and also enable the powder to be more fully and evenly diffused. That is, by optimizing the design of the flow-guiding assembly 12, the uniform flow and heat treatment of the powder material in the furnace are realized, thereby improving the calcination efficiency and product quality.

[0043] In the present invention, unless otherwise clearly specified or limited, terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or indirectly connected through an intermediate medium, and can also be the communication inside two components, or only surface contact, or surface contact connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as specific or special structures. The descriptions of "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in the present invention and the features of different embodiments or examples.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A flow-guided powder calcination furnace, characterized in that, The described diversion-type powder calcination furnace includes: A furnace body, which is provided with a cavity, a feed inlet and a discharge outlet. The discharge outlet is communicated with the feed inlet via the cavity. The furnace body has opposite upper and lower ends. The feed inlet is arranged at the upper end, and the discharge outlet is arranged at the lower end; A diversion component, which is arranged in the cavity. The diversion component divides the cavity into a first chamber and a second chamber. The first chamber and the second chamber are arranged at intervals in the direction from the upper end to the lower end. The first chamber and the second chamber are communicated via the diversion component. The first chamber is communicated with the feed inlet, and the second chamber is communicated with the discharge outlet; Wherein, the diversion component includes a plurality of diversion members, and the plurality of diversion members are arranged at intervals in the direction from the upper end to the lower end in sequence. Each diversion member is provided with a diversion channel, and the diversion channel has a connected inlet and outlet. The outlet of the diversion channel of the first diversion member among the plurality of diversion members is at least partially staggered from the inlet of the diversion channel of the second diversion member.

2. The flow guiding type powder calcination furnace according to claim 1, characterized in that, The first diversion member and the second diversion member are arranged adjacent to each other.

3. The flow-guiding powder calcination furnace according to claim 1 or 2, characterized in that, In the direction from the first end to the second end, the edge of the first diversion member surrounding the outlet of the diversion channel has a first projection; in the direction from the first end to the second end, the edge of the second diversion member surrounding the inlet of the diversion channel has a second projection, and the first projection and the second projection are separated from each other.

4. The flow-guided powder calcination furnace according to claim 2, characterized in that, Both the first diversion member and the second diversion member are provided with a plurality of partition parts. The partition parts of the first diversion member and the partition parts of the second diversion member are both arranged in the area between the first diversion member and the second diversion member, and the partition parts of the first diversion member and the partition parts of the second diversion member are arranged alternately at intervals.

5. The flow guiding type powder calcination furnace according to claim 4, characterized in that, The partition part of the first diversion member is adapted to the size of the diversion channel of the second diversion member; the partition part of the second diversion member is adapted to the size of the diversion channel of the first diversion member; Wherein, at least one of the first diversion member and the second diversion member is slidably arranged in the furnace body. The first diversion member and the second diversion member can approach each other, so that the partition part of the first diversion member enters the diversion channel of the second diversion member, and the partition part of the second diversion member enters the diversion channel of the first diversion member, thereby preventing the blockage of the diversion channel.

6. The flow guiding type powder calcination furnace according to claim 1, characterized in that A plurality of baffles are arranged in the diversion channel of at least one of the plurality of diversion members. The diversion channel has opposite first and second walls. The plurality of baffles are arranged at intervals in the direction from the upper end to the lower end. The first baffle of the adjacent two of the plurality of baffles is arranged on the first wall, and the second baffle is arranged on the second wall.

7. The flow guiding type powder calcination furnace according to claim 6, wherein In the direction from the upper end to the lower end, the projection of the first baffle of the adjacent two of the plurality of baffles overlaps with the projection of the second baffle partially; and / or, Each of the plurality of baffles has a fixed end and a free end, the fixed end being connected to the first wall or the second wall, and the free end being inclined downward in the direction from the first end to the second end with respect to the fixed end.

8. The flow guiding type powder calcination furnace according to claim 1, wherein A partition chamber is formed between any two adjacent ones of the plurality of flow guiding members. The flow guiding type powder calcination furnace further includes a blower, the blower having a plurality of air supply portions, and each of the plurality of air supply portions corresponds to one of the partition chambers.

9. The flow-guided powder calcination furnace according to claim 8, wherein The blower supplies air to each of the partition chambers at a preset interval.

10. The flow guiding type powder calcination furnace according to claim 1, wherein, The flow guiding type powder calcination furnace includes a first burner and a second burner. The first burner corresponds to the first chamber to calcine the powder in the first chamber, and the second burner corresponds to the second chamber to calcine the powder in the second chamber. The volume of the second chamber is larger than the volume of the first chamber. and / or The flow guiding type powder calcination furnace includes a heat exchanger, the heat exchanger being disposed corresponding to the second chamber for recovering the heat of the powder in the second chamber.

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