Powder blocking mechanism for rotary furnace equipment and rotary furnace

Abstract

The utility model discloses a powder blocking mechanism and a rotary furnace for rotary furnace equipment, which comprises a furnace body, a discharging channel and a feeding channel are respectively arranged at two ends of the furnace body, the powder blocking mechanism is arranged in the discharging channel, the powder blocking mechanism comprises a furnace plug matched with the discharging channel, a fixed flange and a primary powder blocking plate are respectively arranged on two sides of the furnace plug, and the primary powder blocking plate is arranged in the furnace plug. The fixed flange is fixedly connected with the furnace plug and can be connected with the end part of the discharging channel, the primary powder baffle is fixed with the furnace plug through a connecting rod, and when the fixed flange is connected with the discharging channel, the primary powder baffle convexly extends into the rotary furnace through the discharging channel, and a gap for air flow to pass through is reserved between the primary powder baffle and the discharging channel; the furnace plug is provided with a center hole communicated with the two sides of the furnace plug, and the fixing flange is provided with a through hole communicated with the center hole. The utility model provides a powder blocking mechanism for rotary furnace equipment and a rotary furnace, which can reduce the leakage amount of powder in the rotary furnace along with airflow, thereby improving the receiving rate of materials in the rotary furnace.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary furnace equipment's technical field, specifically is a kind of rotary furnace equipment's powder blocking mechanism and rotary furnace. BACKGROUND

[0002] Currently, the preparation of positive and negative electrode materials usually uses CVD rotary furnace and vacuum rotary furnace. During sintering ventilation or rotary vacuumizing process, the materials in the furnace are easy to leak into the rear-end pipeline and equipment with air flow, for example, into the vacuum pump. This not only leads to the loss of materials in the rotary furnace and the decrease of reaction efficiency, but also damages the subsequent equipment with the powder leaked with air flow. Although some existing vacuum pumps are equipped with buffer tanks and filter cores when designed, they can only filter and recover the leaked powder, play a role in protecting the subsequent equipment, and cannot reduce the leakage of powder in the furnace, affecting the material recovery rate. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art to some extent: to provide a rotary furnace equipment's powder blocking mechanism and rotary furnace, which can reduce the leakage amount of powder in the rotary furnace with air flow, thereby improving the material recovery rate in the rotary furnace.

[0004] To this end, one purpose of the utility model is to provide a rotary furnace equipment's powder blocking mechanism, which comprises a furnace plug matched with a discharge channel of a rotary furnace, a fixed flange and a first powder blocking plate are respectively arranged on both sides of the furnace plug, the fixed flange is fixedly connected with the furnace plug and is arranged to be connected with the end of the discharge channel, the first powder blocking plate is fixed with the furnace plug through a connecting rod, when the fixed flange is connected with the discharge channel, the first powder blocking plate protrudes into the rotary furnace through the discharge channel and a gap for air flow is left between the first powder blocking plate and the discharge channel, the furnace plug has a central hole communicating both sides of the furnace plug, and the fixed flange has a through hole communicating with the central hole. The flow path of air flow can be changed by the first powder blocking plate, so that the powder particles carried by the air flow fall into the rotary furnace again after impacting the first powder blocking plate during the process of entering the discharge channel through the gap, reducing the leakage of powder and improving the recovery rate.

[0005] According to one example of the utility model, the first powder blocking plate is circular. The circular first powder blocking plate is matched with the circular discharge channel.

[0006] According to one example of the utility model, the first powder blocking plate is a circular-arc structure with the outer edge part curved in the axial direction away from the furnace plug. The outer edge part of the first powder blocking plate is curved into the rotary furnace cavity, thereby improving the separation efficiency of powder in the air flow.

[0007] According to one example of the utility model, one or more secondary powder baffle plates are arranged between the primary powder baffle plate and the furnace plug, the secondary powder baffle plate is fixed with the connecting rod, and the secondary powder baffle plate has air holes for airflow to pass through. The one or more secondary powder baffle plates further reduce the content of powder particles in the airflow, and ultimately make the air discharged from the discharge passage contain less powder particles.

[0008] According to one example of the utility model, the cross-sectional shape of the secondary powder baffle plate matches the discharge passage, so that the outer side wall of the secondary powder baffle plate is attached to the inner side wall of the discharge passage. The outer edge of the secondary powder baffle plate is tightly attached to the inner side wall of the discharge passage, so that the powder particles separated after colliding with the secondary powder baffle plate can fall near the bottom of the secondary powder baffle plate.

[0009] According to one example of the utility model, the connecting rod is a screw rod with external threads, the secondary powder baffle plate has mounting holes for the screw rod to pass through, and the two sides of the secondary powder baffle plate are respectively provided with positioning nuts threadedly connected with the screw rod. The secondary powder baffle plate is axially limited between the two positioning nuts. The secondary powder baffle plate is clamped between the positioning nuts by the positioning nuts, achieving axial positioning, and the position of the secondary powder baffle plate can be conveniently adjusted by rotating the positioning nuts.

[0010] According to one example of the utility model, there are three secondary powder baffle plates, and the three secondary powder baffle plates are arranged axially at intervals.

[0011] According to one example of the utility model, the air holes on any one secondary powder baffle plate and the air holes on the adjacent secondary powder baffle plate are distributed axially in a staggered manner. The staggered distribution of the air holes on the two adjacent secondary powder baffle plates can change the flow direction of the airflow, thereby improving the separation efficiency of the powder particles in the airflow.

[0012] According to one example of the utility model, one of the three secondary powder baffle plates in the middle position has five air holes, and the other two secondary powder baffle plates have four air holes.

[0013] Therefore, another object of the utility model is to provide a rotary furnace, which comprises a furnace body with a furnace cavity inside, a discharge passage and a feeding passage communicated with the furnace cavity at two ends of the furnace body, and the powder blocking mechanism described above. The furnace plug in the powder blocking mechanism is assembled in the discharge passage, and the fixing flange is fixedly connected with the end of the discharge passage. The powder blocking mechanism is added to the discharge passage of the existing rotary furnace, which can improve the recovery rate of powder particles in the airflow.

[0014] The above technical scheme has the following advantages or beneficial effects: firstly, the airflow path flowing into the discharge channel is changed by the first powder blocking plate, so that the powder particles carried in the airflow can fall back into the furnace cavity after hitting the first powder blocking plate, thereby improving the material recovery rate; secondly, the first powder blocking plate is arranged as an arc-shaped structure with the outer edge part bending towards the furnace cavity, thereby further improving the recovery efficiency of the powder particles in the airflow; thirdly, one or more second powder blocking plates are additionally arranged between the first powder blocking plate and the furnace plug, the air holes on the second powder blocking plate can allow the airflow to pass through, and the powder particles contained in the airflow will be blocked by the second powder blocking plate, thereby further reducing the content of the powder particles in the airflow; finally, the adjustment of the second powder blocking plate can be realized by the positioning nut.

[0015] Additional aspects and advantages of the present application will be partially given in the following description, some of which will become apparent from the following description, or will be understood by those skilled in the art from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the powder blocking mechanism for the rotary furnace equipment of the present application.

[0017] Figure 2 is Figure 1 is a structural schematic view of the second powder blocking plate with five air holes in the present application.

[0018] Figure 3 is Figure 1 is a structural schematic view of the second powder blocking plate with four air holes in the present application.

[0019] Figure 4 is Figure 1 is an assembly schematic view of the powder blocking mechanism in the present application installed on the rotary furnace.

[0020] Figure 5 is Figure 4 is a local enlarged schematic view of the "A" area in the present application.

[0021] In the present application, 100, furnace body; 101, furnace cavity; 200, discharge channel; 300, powder blocking mechanism;

[0022] 1, furnace plug; 1.1, center hole; 2, fixed flange; 3, first powder blocking plate; 4, connecting rod; 5, gap; 6, second powder blocking plate; 6.1, air hole; 6.2, mounting hole; 7, positioning nut. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be construed as limiting the present application.

[0024] A powder blocking mechanism for a rotary furnace device and a rotary furnace according to embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] The present application provides a powder blocking mechanism for a rotary furnace device, as shown, comprising a furnace plug 1, a fixed flange 2 and a first powder blocking plate 3, the outer diameter of the furnace plug 1 is set to match the discharge channel 200 of the corresponding rotary furnace, the fixed flange 2 and the first powder blocking plate 3 are arranged on both sides of the furnace plug 1, wherein the fixed flange 2 is located on the rear side of the furnace plug 1, and the first powder blocking plate 3 is located on the front side of the furnace plug 1, the fixed flange 2 is fixedly connected with the furnace plug 1 and is arranged to be connected with the end of the discharge channel 200 exposed outside the rotary furnace, the first powder blocking plate 3 is fixed with the furnace plug 1 through a connecting rod 4, the first powder blocking plate 3 is arranged at intervals with the furnace plug 1, and the interval between the first powder blocking plate 3 and the furnace plug 1 is set to be that when the fixed flange 2 is connected with the discharge channel 200, the first powder blocking plate 3 protrudes into the rotary furnace through the discharge channel 200 and a gap 5 is left between the first powder blocking plate 3 and the discharge channel 200 for airflow to pass through, the furnace plug 1 has a central hole 1.1 communicating both sides of the furnace plug 1, and the fixed flange 2 has a through hole communicating with the central hole 1.1. In this embodiment, the furnace plug 1 and the first powder blocking plate 3 are axially inserted into the discharge channel 200 of the rotary furnace, the fixed flange 2 is fixedly connected with the end of the discharge channel 200 away from the rotary furnace body, and the powder particles flowing with the airflow during the exhaust process of the rotary furnace through the discharge channel 200 can fall back into the rotary furnace after impacting the first powder blocking plate 3, thereby reducing the amount of powder leakage.

[0026] Based on the above preferred embodiment, the first powder blocking plate 3 is circular or square or polygonal. Preferably, the first powder blocking plate 3 is circular.

[0027] As Figure 5 shown, the first powder blocking plate 3 is a circular arc structure with the outer edge portion curved in the axial direction away from the furnace plug 1. In this embodiment, the middle portion of the first powder blocking plate 3 is curved towards the discharge channel 200, and the outer edge portion is curved in the opposite direction into the rotary furnace, thereby enabling better separation of the powder and the airflow when the airflow drives the powder to impact the first powder blocking plate 3, and better recovery of the powder in the airflow.

[0028] In the above embodiment, the primary baffle plate 3 separates the powder carried in the airflow. However, inevitably, some powder particles will still enter the discharge channel 200 with the airflow. To further reduce the powder in the airflow, the improvement in this embodiment is that at least one secondary baffle plate 6 is provided between the primary baffle plate 3 and the furnace plug 1. The secondary baffle plate 6 has air holes 6.1 for airflow to pass through. The secondary baffle plate 6 is fixed to the connecting rod 4, and the secondary baffle plate 6 is spaced apart from the primary baffle plate 3 and the furnace plug 1. In this embodiment, when the airflow passes through the secondary baffle plate 6, the airflow flows through the air holes 6.1, and the powder particles contained in the airflow will further collide with the secondary baffle plate 6 and remain at the bottom of the secondary baffle plate 6, thereby reducing the powder particles in the airflow and protecting the downstream equipment.

[0029] Preferably, the cross-sectional shape of the secondary dust baffle 6 matches the corresponding discharge channel 200, so that the outer wall of the secondary dust baffle 6 fits against the inner wall of the discharge channel 200. In this embodiment, the outer edge of the secondary dust baffle 6 is in close contact with the inner wall of the discharge channel 200, thereby reducing the airflow between the outer edge of the secondary dust baffle 6 and the inner wall of the discharge channel 200, so that the powder particles falling to the bottom of the secondary dust baffle 6 can be concentrated and retained in this area.

[0030] Improvements based on the above embodiments: The connecting rod 4 is a screw with external threads, the secondary powder baffle plate 6 has a mounting hole 6.2 for the screw to pass through, and each side of the secondary powder baffle plate 6 is provided with a positioning nut 7 threadedly connected to the screw. The secondary powder baffle plate 6 is axially positioned between the two corresponding positioning nuts 7. In this embodiment, the axial position of the corresponding secondary powder baffle plate 6 can be adjusted by rotating the positioning nuts 7. Furthermore, in order to reduce the loosening of the positioning nuts 7, there are two positioning nuts 7 on any side of the secondary powder baffle plate 6. The two positioning nuts 7 are used in series to reduce the loosening of the positioning nuts 7.

[0031] like Figure 5 As shown, there are multiple secondary dust-blocking plates 6. Specifically, there are three secondary dust-blocking plates 6, which are spaced apart along the axial direction.

[0032] Furthermore, the pores 6.1 on any one of the secondary baffle plates 6 are staggered axially from those on adjacent secondary baffle plates 6. This axial staggered distribution means that the projections of the pores 6.1 on any two adjacent secondary baffle plates 6 are misaligned on the same cross-section. By staggering the arrangement of the pores 6.1 on two adjacent secondary baffle plates 6, the flow direction of the airflow is changed, thereby improving the separation efficiency of powder particles in the airflow.

[0033] Furthermore, such as Figures 2-4As shown, the three secondary powder baffles 6 include a five-hole secondary powder baffle 6 with five air holes 6.1 and two four-hole secondary powder baffles 6 with four air holes 6.1. The five-hole secondary powder baffle 6 is located in the middle of the three secondary powder baffles 6, and the two four-hole secondary powder baffles 6 are located on both sides of the five-hole secondary powder baffle 6.

[0034] The materials used in the aforementioned primary dust baffle 3 and secondary dust baffle 6 include, but are not limited to, graphite, stainless steel, and nickel plate.

[0035] Based on the powder-blocking mechanism in the above embodiments, this utility model provides a rotary kiln, such as... Figure 4 and Figure 5 As shown, the furnace body 100 includes an internal furnace cavity 101. The furnace body 100 has a discharge channel 200 and a feed channel (not shown in the figure) communicating with the furnace cavity 101 at both ends. It also includes a powder blocking mechanism 300 of any of the above embodiments. The furnace plug 1 in the powder blocking mechanism 300 is assembled in the discharge channel 200, and the fixed flange 2 in the powder blocking mechanism 300 is fixedly connected to the end of the discharge channel 200.

[0036] It should be understood that the aforementioned rotary kilns include, but are not limited to, existing chemical vapor deposition rotary kilns (CVD rotary kilns) and vacuum rotary kilns.

[0037] It should be noted that in the description of this utility model, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through the intermediate medium, can be the communication of two elements or the interaction of two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium.Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0042] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model.The ordinary skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

[0043] For the ordinary skilled in the art, various changes and modifications will be obvious after reading the above description.The appended claims should be considered as covering all changes and modifications within the true intention and scope of the utility model.Any and all equivalent scope and content within the scope of claims should be considered as still belonging to the intention and scope of the utility model.

Claims

1. A powder-blocking mechanism for a rotary kiln, characterized in that: The application relates to a rotary furnace discharge channel (200) matched with a furnace plug (1), and the furnace plug (1) is provided with a fixed flange (2) and a first dust baffle (3) on two sides, the fixed flange (2) is fixedly connected with the furnace plug (1) and can be connected with the end of the discharge channel (200), the first dust baffle (3) is fixed with the furnace plug (1) through a connecting rod (4), when the fixed flange (2) is connected with the discharge channel (200), the first dust baffle (3) protrudes into the rotary furnace through the discharge channel (200), and a gap (5) is left between the first dust baffle (3) and the discharge channel (200) for airflow, the furnace plug (1) is provided with a central hole (1.1) communicating with both sides of the furnace plug (1), and the fixed flange (2) is provided with a through hole communicating with the central hole (1.1).

2. The powder blocking mechanism for a rotary furnace apparatus according to claim 1, characterized by: The first dust baffle (3) is circular.

3. The powder blocking mechanism for a rotary furnace apparatus according to claim 2, characterized by: The first dust baffle (3) is in a circular arc structure, and the outer edge portion is curved in an axial direction away from the furnace plug (1).

4. The powder blocking mechanism for a rotary furnace apparatus according to claim 1, characterized by: At least one second dust baffle (6) is arranged between the first dust baffle (3) and the furnace plug (1), the second dust baffle (6) is fixed with the connecting rod (4), and the second dust baffle (6) is provided with air holes (6.1) for airflow.

5. The powder blocking mechanism for a rotary furnace apparatus according to claim 4, characterized in that: The cross-sectional shape of the second dust baffle (6) is matched with the corresponding discharge channel (200), so that the outer side wall of the second dust baffle (6) is attached to the inner side wall of the discharge channel (200).

6. The powder blocking mechanism for a rotary furnace apparatus according to claim 4, characterized by: The connecting rod (4) is a screw rod with external threads, the second dust baffle (6) is provided with a mounting hole (6.2) for the screw rod to pass through, and the two sides of the second dust baffle (6) are respectively provided with a positioning nut (7) threadedly connected with the screw rod, and the second dust baffle (6) is axially limited between the two corresponding positioning nuts (7).

7. The powder blocking mechanism for a rotary furnace apparatus according to claim 6, characterized by: The second dust baffles (6) are three, and the three second dust baffles (6) are arranged at intervals in an axial direction.

8. The powder blocking mechanism for a rotary furnace apparatus according to claim 7, characterized by: The air holes (6.1) on any one second dust baffle (6) are distributed in an axial direction offset from the air holes (6.1) on the adjacent second dust baffles (6).

9. The powder blocking mechanism for a rotary furnace apparatus according to claim 7, characterized by: One of the three second dust baffles (6) in the middle position has five air holes (6.1), and the other two second dust baffles (6) have four air holes (6.1).

10. A rotary furnace comprising a furnace body (100) having a furnace chamber (101) inside, a discharge passage (200) and a feed passage being provided at both ends of the furnace body (100) respectively, and communicating with the furnace chamber (101), characterized in that: The application further relates to a dust baffle mechanism (300) for the rotary furnace equipment in any one of claims 1-9, the furnace plug (1) in the dust baffle mechanism (300) is assembled in the discharge channel (200), and the fixed flange (2) is fixedly connected with the end of the discharge channel (200).

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