Anti-blocking structure of vertical roasting furnace and vertical roasting furnace

Abstract

The invention relates to the technical field of battery material treatment equipment, and discloses a vertical roasting furnace anti-blocking structure and a vertical roasting furnace. The vertical roasting furnace comprises a vertical furnace body, a material sintering cavity is formed in the vertical furnace body, a plurality of material overturning mechanisms which are distributed up and down at intervals are arranged in the vertical furnace body, each material overturning mechanism comprises a plurality of overturning plates, and each overturning plate can be switched between a partition state and an open state; in the separated state, all the overturning plates are mutually spliced so as to seal the section of the material sintering cavity; in an open state, the overturning plates are not in contact with one another; and each turnover plate turns over and scatters materials at the bottom in the corresponding reaction area in the switching process of the separation state and the opening state. According to the anti-blocking structure of the vertical roasting furnace, the materials are turned and controlled by the plurality of turning mechanisms to be scattered, so that the caking and blocking of the materials are avoided, the static pressure influence is reduced, the materials are heated more uniformly by the manufactured vertical roasting furnace, and the sintering quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of battery material processing equipment, and in particular to an anti-blocking structure for a vertical roasting furnace and a vertical roasting furnace. Background Art

[0002] Traditional sintering equipment for battery positive and negative materials is generally a roller hearth kiln or a tunnel kiln. When sintering using a roller hearth kiln or a tunnel kiln, first, the material (i.e., battery positive and negative materials) needs to be loaded into a sagger, and then the sagger loaded with the material is sequentially passed through the heating zone, heat preservation zone, and cooling zone of the kiln to complete sintering. However, before loading the material into the sagger, the material needs to be cooled first, and after loading into the sagger, the material needs to be heated up and cooled down again. The repeated heating and cooling of the material waste energy consumption; moreover, traditional sintering equipment requires a roller hearth to provide power to drive the sagger loaded with the material to sequentially pass through different areas of the kiln. The horizontal layout makes the equipment structure complex, occupies a large area, and has a high cost; in addition, the material loaded in the sagger is in a static heating and warming process, the heating and cooling processes are slow, and the temperature is relatively not very uniform, reducing the quality of the material.

[0003] Patent CN118391901B discloses a vertical roasting furnace. Different from the traditional sintering method, the vertical structure enables the material to pass through multiple reaction zones of the material sintering cavity in a fluid state under the action of gravity, realizes real-time transmission and dynamic heating and cooling of the material, not only realizes dynamic sintering of the material, improves the sintering effect, but also does not require a power device to drive the movement of the material, saving energy; moreover, the material at a relatively high temperature after drying does not need to be cooled to be loaded into the sagger, but is directly introduced into the reaction zone at the top of the material sintering cavity by a feeding mechanism, thus improving the sintering efficiency of the material.

[0004] However, it is found in use that in the vertical cylindrical furnace body structure, the static pressure of the material is large, the material is easy to agglomerate and even block, resulting in uneven heating of the material and affecting the sintering quality. Summary of the Invention

[0005] Based on the above problems, the purpose of the present invention is to provide an anti-blocking structure for a vertical roasting furnace and a vertical roasting furnace, so that the material is heated more evenly in the furnace body, avoiding agglomeration and preventing blockage.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A material blocking prevention structure for a vertical roasting furnace comprises a vertical furnace body having a material sintering chamber therein, wherein the material to be sintered is input from the top of the material sintering chamber and flows freely downward under the action of gravity, and a plurality of material turning mechanisms spaced apart vertically are provided in the vertical furnace body, each material turning mechanism comprising a plurality of turning plates, each of which can be switched between a blocking state and an open state; in the blocking state, the turning plates are spliced together to close the cross-section of the material sintering chamber, thereby dividing the material sintering chamber into a plurality of reaction zones; in the open state, the turning plates do not contact each other, so that adjacent reaction zones are connected;

[0008] Each turnover plate turns over and scatters the materials at the bottom of the corresponding reaction zone during the switching process between the partition state and the open state.

[0009] As an optional solution, the vertical furnace body is divided into a plurality of furnace body sections corresponding to the plurality of reaction zones, a connecting frame is provided between two adjacent furnace body sections, and the turning mechanism is provided on the connecting frame.

[0010] As an optional solution, the furnace body section includes a stainless steel rectangular cylinder and a carbon steel cylinder arranged outside the stainless steel rectangular cylinder. An interlayer space is formed between the stainless steel rectangular cylinder and the carbon steel cylinder. A heating mechanism arranged around the stainless steel rectangular cylinder and insulation cotton arranged around the heating mechanism are arranged in the interlayer space.

[0011] As an optional solution, the heating mechanism includes a plurality of heating tube groups stacked up and down, each heating tube group including four heating tubes arranged in a "well" shape, and the four heating tubes respectively cross the reaction zone.

[0012] As an optional solution, the surface of the furnace body section is provided with detection ports for detecting the atmosphere and furnace pressure in the reaction zone and thermocouples for detecting the temperature in the reaction zone.

[0013] As an optional solution, the turning mechanism also includes a transmission plate, a drive plate and a flip cylinder arranged outside the vertical furnace body. A transmission plate is provided for each flip plate. One end of the transmission plate is fixed to the rotating shaft of the corresponding flip plate, and the other end of the transmission plate is rotatably connected to the drive plate. The output end of the flip cylinder is rotatably connected to the drive plate, and the flip cylinder is used to drive each flip plate to rotate synchronously.

[0014] As an optional solution, the edge of the flip plate is provided with a step surface, and in the partition state, the step surfaces of two adjacent flip plates are spliced together to form a flat plate surface.

[0015] As an optional solution, the edges of two adjacent flip plates overlap each other in the partition state.

[0016] As an optional solution, the cavity wall of the material sintering cavity is provided with stoppers that form a limit with the edges of the turnover plates on both sides.

[0017] A vertical roasting furnace adopts the anti-blocking structure of the vertical roasting furnace described above.

[0018] Advantages of the present invention:

[0019] The anti-blocking structure of the vertical roasting furnace enables the materials to be turned and controlled by multiple turning mechanisms when flowing downward in the vertical furnace body, so as to be dispersed, thus avoiding material caking and blockage, reducing the influence of static pressure. The vertical roasting furnace made of the anti-blocking structure of the vertical roasting furnace makes the materials heated more evenly and ensures the sintering quality. Description of the drawings

[0020] Figure 1 It is a schematic diagram of the anti-blocking structure of the vertical roasting furnace provided by an embodiment of the present invention;

[0021] Figure 2 It is a cross-sectional view of the anti-blocking structure of the vertical roasting furnace provided by an embodiment of the present invention;

[0022] Figure 3 It is an external structure schematic diagram of the turning mechanism involved in an embodiment of the present invention;

[0023] Figure 4 It is an internal structure schematic diagram of the turning mechanism involved in an embodiment of the present invention;

[0024] Figure 5 It is another structure schematic diagram of the turning mechanism involved in an embodiment of the present invention;

[0025] Figure 6 It is a structure schematic diagram of a vertical roasting furnace provided with multiple material sintering chambers in an embodiment of the present invention;

[0026] Figure 7 It is a first structural perspective view of the vertical roasting furnace provided by an embodiment of the present invention;

[0027] Figure 8 It is a second structural perspective view of the vertical roasting furnace provided by an embodiment of the present invention.

[0028] In the drawings:

[0029] 1. Vertical furnace body; 11. Material sintering chamber; 111. Block; 12. Reaction zone; 121. Preheating zone; 122. First constant temperature zone; 123. Second constant temperature zone; 124. Cooling zone; 13. Furnace body section; 131. Stainless steel rectangular cylinder; 132. Carbon steel cylinder; 133. Heat insulation cotton; 134. Connecting flange; 14. Connecting frame; 15. Detection port; 16. Thermocouple;

[0030] 2. Material turning mechanism; 21. Turning plate; 211. Step surface; 22. Transmission plate; 23. Driving plate; 24. Turning cylinder

[0031] 3. Heating mechanism; 31. Heating pipe

[0032] 4. Feeding mechanism

[0033] 5. Support frame

[0034] 6. Material dispersion mechanism; 61. Air blowing pipe Detailed implementation mode

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0036] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. 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.

[0037] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] In addition, the terms "first", "second", etc. are only used for distinction in description and have no special meaning.

[0040] Example 1:

[0041] Please refer to Figure 1 and Figure 2 As shown, this embodiment provides an anti-blocking structure for a vertical roasting furnace. Here, the vertical roasting furnace includes a vertical furnace body 1, and there is a material sintering cavity 11 inside the vertical furnace body 1. Among them, the material to be sintered is input from the top of the material sintering cavity 11 and freely flows downward under the action of gravity. A number of turning mechanisms 2 are arranged at intervals up and down in the vertical furnace body 1. Each turning mechanism 2 includes a number of turning plates 21, and each turning plate 21 can be switched between a partition state and an open state;

[0042] In the partition state, each turning plate 21 is spliced with each other to close the cross-section of the material sintering cavity 11, thereby dividing the material sintering cavity 11 into a number of reaction zones 12;

[0043] In the open state, each turning plate 21 does not contact each other, so that adjacent reaction zones 12 communicate with each other;

[0044] During the switching process of each turning plate 21 between the partition state and the open state, the material at the bottom of the corresponding reaction zone 12 is turned over and dispersed.

[0045] Specifically, in the partition state, each turning plate 21 is in a horizontal position or close to a horizontal position, so as to block the falling of materials. In the open state, each turning plate 21 is in a vertical position, and the materials can freely fall to the next reaction zone 12 or flow out of the material sintering cavity 11. Thus, by controlling the movement of the turning plates 21 of each turning mechanism 2, the function of controlling the materials in each reaction zone 12 can be realized; when the turning plate 21 makes a turning movement, it will turn over and stir the materials, especially break up the caked materials, thereby avoiding blockage.

[0046] Thus, when the materials flow downward in the vertical furnace body 1, they are turned over and controlled by a number of turning mechanisms 2 and then dispersed, thereby avoiding material caking and blockage, reducing the influence of static pressure, and making the materials heat more evenly in the furnace body, ensuring the sintering quality.

[0047] Example 2:

[0048] This embodiment provides an anti-blocking structure for a vertical roasting furnace. On the basis of Example 1, the vertical furnace body 1 can be an integral structure, and the turning mechanism 2 is directly installed on the inner wall of the vertical furnace body 1; or, the vertical furnace body 1 can also be divided into a number of furnace body segments 13 corresponding to a number of reaction zones 12, and a connection frame 14 is arranged between adjacent two furnace body segments 13, and the turning mechanism 2 is arranged on the connection frame 14. This embodiment takes the latter as an example. The segmented structure is convenient for building vertical furnace bodies 1 with different heights according to the required number of reaction zones 12 and for later maintenance.

[0049] Optionally, as shown in Figure 1 and Figure 2 shown, the furnace body section 13 includes a stainless-steel rectangular cylinder 131 and a carbon-steel cylinder 132 disposed outside the stainless-steel rectangular cylinder 131. A sandwich space is formed between the stainless-steel rectangular cylinder 131 and the carbon-steel cylinder 132. A heating mechanism 3 arranged around the stainless-steel rectangular cylinder 131 and a heat-insulating cotton 133 arranged around the heating mechanism 3 are provided in the sandwich space; the structure of the connection frame 14 is similar to that of the furnace body section 13, except that the heating mechanism 3 does not need to be provided.

[0050] Thus, the stainless-steel rectangular cylinder 131 and the carbon-steel cylinder 132 form a hollow material sintering cavity 11 and a sandwich space. The heating mechanism 3 is used to provide heat to the material flowing in the material sintering cavity 11, so that the material can be sintered within a relatively constant temperature range to meet the sintering requirements; the heat-insulating cotton 133 is used to reduce the heat loss of the material sintering cavity 11.

[0051] Furthermore, the heating mechanism 3 includes a plurality of heating tube groups arranged in an upper and lower stacked manner. The heating tube group includes four heating tubes 31 arranged in a "well" shape. The four heating tubes 31 respectively cross the reaction zone 12, thereby providing a stable heating environment for the material sintering cavity 11.

[0052] Alternatively, the heating mechanism 3 includes a heating plate provided at the inner wall of the vertical furnace body 1; and / or, the heating mechanism 3 includes a burner penetrating the inner wall of the vertical furnace body 1, and the burner is used to spray fire into the reaction zone 12 to heat the material; and / or, the heating mechanism 3 includes a blower, a hot air pipe and a heating element. The blower is used to introduce air into the hot air pipe. The heating element is provided in the hot air pipe. The hot air pipe is communicated with the material sintering cavity 11. The air heated by the heating element flows to the material sintering cavity 11; the above methods can all meet the sintering heating requirements of the material.

[0053] Optionally, a connecting flange 134 is provided at the end of each furnace body section 13. The end of the connection frame 14 is fixedly connected to the connecting flange 134. A plurality of turnover plates 21 are rotatably arranged side by side on the side wall of the connection frame 14 to realize the reliable connection between each furnace body section 13 and each connection frame 14 and ensure the simple construction of the vertical furnace body 1.

[0054] Optionally, a detection port 15 for detecting the atmosphere and furnace pressure in the reaction zone 12 and a thermocouple 16 for detecting the temperature in the reaction zone 12 are provided on the surface of the furnace body section 13 to monitor in real time whether the sintering environment of the material sintering cavity 11 is normal.

[0055] Embodiment 3:

[0056] This embodiment provides a vertical roasting furnace anti-blocking structure. On the basis of Embodiment 1, as shown in Figures 1 to 4As shown, the material turning mechanism 2 further includes a transmission plate 22, a driving plate 23 and a turning cylinder 24 disposed outside the vertical furnace body 1. A transmission plate 22 is correspondingly arranged for each turning plate 21. One end of the transmission plate 22 is fixed to the rotating shaft of the corresponding turning plate 21, the other end of the transmission plate 22 is rotatably connected to the driving plate 23, and the output end of the turning cylinder 24 is rotatably connected to the driving plate 23. The turning cylinder 24 is used to drive each turning plate 21 to rotate synchronously.

[0057] Thus, the turning cylinder 24 drives the driving plate 23 to control the rotation of each transmission plate 22, and further controls the synchronous rotation of each turning plate 21, so as to realize the switching between the partition state and the open state.

[0058] Optionally, a stepped surface 211 is provided at the edge of the turning plate 21. In the partition state, the stepped surfaces 211 of two adjacent turning plates 21 are spliced together to form a flat plate surface, as Figure 4 shown.

[0059] Optionally, a stop block 111 for limiting the edges of the turning plates 21 on both sides is provided on the cavity wall of the material sintering cavity 11, thereby ensuring the sealing between the turning plate 21 and the cavity wall of the material sintering cavity 11 in the partition state.

[0060] Embodiment 4:

[0061] This embodiment provides a vertical roasting furnace anti-blocking structure. The structure of this embodiment is basically the same as that of Embodiment 3, except that the splicing form of the turning plate 21 is different.

[0062] In this embodiment, the edges of two adjacent turning plates 21 overlap and lap each other in the partition state. Similarly, the turning plate 21 can realize the function of controlling the partition or opening of the material sintering cavity 11, and only need to adaptively adjust the rotation control of each turning plate 21, as Figure 5 shown.

[0063] Embodiment 5:

[0064] On the basis of Embodiments 1 to 4, this embodiment provides a vertical roasting furnace, which adopts the above-mentioned vertical roasting furnace anti-blocking structure.

[0065] This vertical roasting furnace can be used in battery material processing equipment to sinter the positive and negative electrode materials of the battery. Of course, in addition to being used in battery material processing equipment to sinter the positive and negative electrode materials, this vertical roasting furnace can also be used in other equipment, so as to realize the processing of other materials with sintering or drying requirements.

[0066] Specifically, as Figure 7 and Figure 8As shown in the figure, the vertical roasting furnace includes a vertical furnace body 1, a feeding mechanism 4, a heating mechanism 3, and a material turning mechanism 2. The vertical furnace body 1 has a material sintering cavity 11, and the material sintering cavity 11 includes a plurality of reaction zones 12 that are sequentially communicated from top to bottom, and at least some of the reaction conditions of the reaction zones 12 are different; the feeding mechanism 4 is communicated with the material sintering cavity 11 and is used to input the material to be sintered into the reaction zone 12 at the top, and the material can flow downward under the action of gravity to the reaction zone 12 at the bottom; the heating mechanism 3 is arranged around the material sintering cavity 11 and is used to heat the material; the material turning mechanism 2 is arranged at the bottom of each reaction zone 12 and is used to control the downward flow rate of the material in each reaction zone 12 and drive the material at the bottom of each reaction zone 12 to turn over.

[0067] Compared with the prior art in which the material to be sintered is loaded in a sagger, the material is filled and compacted in the sagger, and a power device is required to drive the sagger loaded with the material to horizontally pass through different reaction zones 12 of the kiln to complete sintering, resulting in slow temperature rise and fall of the material at the core of the sagger, uneven temperature of the material at the core and the surface material, and ultimately poor sintering effect of the material, low sintering rate, and the horizontal layout and power drive cause the entire equipment structure to be scattered, occupy a large area, and have a high manufacturing cost.

[0068] The vertical roasting furnace provided in this embodiment adopts a vertical structure. The material sintering cavity 11 of the vertical furnace body 1 is divided into a plurality of reaction zones 12 in the height direction. After the feeding mechanism 4 directly feeds the dry and high-temperature material into the reaction zone 12 at the top of the material sintering cavity 11, under the action of gravity, the granular material can pass through the plurality of reaction zones 12 of the material sintering cavity 11 in a fluid state in sequence. During the flowing process, the gap between the materials is large. During this process, the materials are transmitted in real time and the temperature rises and falls dynamically, which not only realizes the dynamic sintering of the materials, improves the sintering effect, but also does not require a power device to drive the movement of the materials, saves energy, improves the structural compactness of the equipment, reduces the floor area, and reduces the manufacturing cost. Moreover, the vertical roasting furnace does not use a sagger to load the material to be sintered. The material at a relatively high temperature after drying does not need to be cooled in order to be loaded into the sagger, but is directly fed into the reaction zone 12 at the top of the material sintering cavity 11. In this way, the material does not need to be heated and cooled repeatedly, and the sintering efficiency of the material is improved.

[0069] Optionally, the vertical furnace body 1 is of a cylindrical structure and includes a top wall plate, an annular side wall plate, and a bottom wall plate. In order to support the vertical furnace body 1, the vertical roasting furnace further includes a support frame 5, and the support frame 5 is supported below the vertical furnace body 1 to stably lift the vertical furnace body 1. Specifically, the support frame 5 is a frame structure made of a plurality of rods.

[0070] In this embodiment, there are multiple reaction zones 12, including a preheating zone 121, a first constant temperature zone 122, a second constant temperature zone 123, and a cooling zone 124 that are connected in sequence from top to bottom. The feeding mechanism 4 is connected to the preheating zone 121. The preheating zone 121, the first constant temperature zone 122, and the second constant temperature zone 123 are all used to heat and keep the material warm. The heating mechanism 3 is located in the preheating zone 121, the first constant temperature zone 122, and the second constant temperature zone 123. The material turning mechanism 2 is respectively arranged at the bottoms of the preheating zone 121, the first constant temperature zone 122, and the second constant temperature zone 123. The cooling zone 124 is used to cool the material.

[0071] It should be noted that when the material is the positive and negative electrode materials of a battery, the sintering process of the positive and negative electrode materials is generally heating, heat preservation, and cooling. Of course, in other embodiments, the number of reaction zones 12 can be increased or decreased according to requirements, and is not limited to the above four.

[0072] The feeding mechanism 4 can be set to one or more according to requirements. When multiple feeding mechanisms 4 are set, the multiple feeding mechanisms 4 are arranged at intervals on the top wall plate of the vertical furnace body 1 to meet the needs of multi-material mixed sintering.

[0073] Furthermore, multiple material sintering cavities 11 can be expandably arranged in the vertical furnace body 1, as Figure 6 shown. Each material sintering cavity 11 can sinter the material independently, avoiding interference between different materials, greatly improving the sintering efficiency, and improving the integration degree of the vertical sintering furnace.

[0074] The heating mechanism 3 is used to provide heat to the material flowing in the material sintering cavity 11, so that the material can be sintered within a relatively constant temperature range, thereby improving the sintering quality. In this embodiment, the heating mechanism 3 is exemplified by heating tubes 31. Multiple heating tubes 31 respectively cross the preheating zone 121, the first constant temperature zone 122, and the second constant temperature zone 123. Optionally, the extending direction of the heating tubes 31 is the horizontal direction, that is, the heating tubes 31 are arranged perpendicular to the flowing direction of the material in the material sintering cavity 11; when multiple material sintering cavities 11 are arranged in rows and columns, the heating tubes 31 are also arranged in rows and columns, and heating tubes 31 are provided on both sides of each row or each column of material sintering cavities 11, that is, in a "well" shape distribution. Optionally, the heating tubes 31 are electric heating tubes, and heating wires are arranged in the electric heating tubes.

[0075] The material flowing out of the second constant temperature zone 123 enters the cooling zone 124. The cooling zone 124 is used to cool the material. In order to improve the cooling speed, the vertical roasting furnace further includes a cooling mechanism, and the cooling mechanism is used to accelerate the cooling speed of the material entering the cooling zone 124. Optionally, the cooling zone 124 is in a funnel shape.

[0076] In some specific embodiments, the cooling mechanism includes a cooling coil disposed around the cooling zone 124. The cooling coil can be arranged on the outer surface of the cooling zone 124 or in the side wall of the cooling zone 124. The cooling coil has a cooling medium inlet and a cooling medium outlet. The cooling medium at a lower temperature enters the cooling coil through the cooling medium inlet, and after heat exchange with the material entering the cooling zone 124, the cooled cooling medium is discharged from the cooling medium outlet. Optionally, the cooling medium is cooling water; the cooling coil is a copper tube.

[0077] To further improve the cooling effect on the material, a material dispersion mechanism 6 is provided between the second constant temperature zone 123 and the cooling zone 124. The material dispersion mechanism 6 is used to blow the material flowing out from the bottom opening of the second constant temperature zone 123 onto the side wall of the vertical furnace body 1, so as to reduce the distance between the material and the cooling mechanism, thereby achieving the purpose of increasing the cooling rate of the material.

[0078] Furthermore, the material dispersion mechanism 6 includes a blowing pipe 61. The blowing pipe 61 is circumferentially arranged around the bottom of the second constant temperature zone 123. The blowing pipe 61 has a blowing port and an air inlet. The air inlet is connected to an external air source. The gas in the external air source enters the blowing pipe 61 through the air inlet and sprays towards the material entering the cooling zone 124 when flowing to the blowing port. Optionally, the external air source is a nitrogen source, and the gas used to disperse the material is nitrogen; the shape of the blowing pipe 61 and the number and distribution of the blowing ports can be flexibly adjusted according to requirements as long as the material can be blown.

[0079] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Anti-blocking structure for vertical roasting furnace. The vertical roasting furnace includes a vertical furnace body (1), and a material sintering cavity (11) is provided inside the vertical furnace body (1). It is characterized in that, The material to be sintered is input from the top of the material sintering chamber (11) and flows freely downward under the action of gravity. The vertical furnace body (1) is provided with a plurality of material turning mechanisms (2) spaced apart from each other. Each of the material turning mechanisms (2) includes a plurality of turning plates (21). Each of the turning plates (21) can be switched between a partition state and an open state. In the partition state, the respective flip plates (21) are spliced together to close the cross section of the material sintering chamber (11), thereby dividing the material sintering chamber (11) into a plurality of reaction zones (12); In the open state, the flip plates (21) do not contact each other, so that the adjacent reaction zones (12) are connected; Each of the turnover plates (21) turns over and scatters the materials at the bottom of the corresponding reaction zone (12) during the switching process between the partition state and the open state.

2. The anti-blocking material structure of the vertical roasting furnace according to claim 1, characterized in that, The vertical furnace body (1) is divided into a plurality of furnace body sections (13) corresponding to the plurality of reaction zones (12); a connecting frame (14) is provided between two adjacent furnace body sections (13); and the turning mechanism (2) is provided on the connecting frame (14).

3. The anti-blocking material structure of the vertical roasting furnace according to claim 2, characterized in that, The furnace body section (13) comprises a stainless steel rectangular cylinder (131) and a carbon steel cylinder (132) arranged outside the stainless steel rectangular cylinder (131); an interlayer space is formed between the stainless steel rectangular cylinder (131) and the carbon steel cylinder (132); a heating mechanism (3) arranged around the stainless steel rectangular cylinder (131) and thermal insulation cotton (133) arranged around the heating mechanism (3) are arranged in the interlayer space.

4. The anti-blocking material structure of the vertical roasting furnace according to claim 3, characterized in that, The heating mechanism (3) comprises a plurality of heating tube groups stacked up and down, wherein the heating tube group comprises four heating tubes (31) arranged in a "well" shape, and the four heating tubes (31) respectively cross the reaction zone (12).

5. The anti-blocking material structure of the vertical roasting furnace according to claim 2, characterized in that The surface of the furnace body section (13) is provided with a detection port (15) for detecting the atmosphere and furnace pressure in the reaction zone (12) and a thermocouple (16) for detecting the temperature in the reaction zone (12).

6. The anti-blocking material structure of the vertical roasting furnace according to claim 1, characterized in that, The turning mechanism (2) further comprises a transmission plate (22), a drive plate (23) and a turning cylinder (24) arranged outside the vertical furnace body (1); each turning plate (21) is provided with a corresponding transmission plate (22); one end of the transmission plate (22) is fixed to the rotating shaft of the corresponding turning plate (21); the other end of the transmission plate (22) is rotationally connected to the drive plate (23); the output end of the turning cylinder (24) is rotationally connected to the drive plate (23); and the turning cylinder (24) is used to drive each turning plate (21) to rotate synchronously.

7. The anti-blocking material structure of the vertical roasting furnace according to claim 1, characterized in that, The edge of the flip plate (21) is provided with a step surface (211), and in the partition state, the step surfaces (211) of two adjacent flip plates (21) are spliced together to form a flat plate surface.

8. The anti-blocking material structure of the vertical roasting furnace according to claim 1, characterized in that, In the partition state, the edges of two adjacent flip plates (21) overlap with each other.

9. The anti-blocking material structure of the vertical roasting furnace according to claim 7 or 8, characterized in that, On the cavity wall of the material sintering cavity (11), there are stoppers (111) that form a limit with the edges of the turning plates (21) on both sides.

10. Vertical roasting furnace, characterized in that, Adopt the anti-blocking structure of the vertical roasting furnace according to any one of claims 1-9.

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