Continuous granulation kettle

Abstract

The utility model relates to a continuous granulation kettle, which belongs to the field of cathode material preparation equipment, and comprises a kettle body and a stirring mechanism, the kettle body is provided with a feed port and a discharge port, and the kettle body is in the shape of a horizontal cylinder; the stirring mechanism comprises a motor, a stirring shaft and blades, the axial direction of the stirring shaft is consistent with that of the kettle body, one end of the stirring shaft is inserted into one end of the kettle body, the other end of the stirring shaft penetrates through the other end of the kettle body and is connected with an output shaft of the motor, and the blades are fixed on the stirring shaft; the blade consists of a plurality of spiral blade units, the plurality of spiral blade units are arranged along the axial direction of the stirring shaft, and a reinforcing mechanism for reinforcing the connection between the stirring shaft and the kettle body is arranged between the adjacent spiral blade units.

Description

Technical Field

[0001] The utility model relates to the field of negative electrode material preparation equipment, and more specifically, to a continuous granulation kettle. Background Art

[0002] Negative electrode materials generally refer to negative electrode materials for lithium-ion batteries. They are an important component of lithium-ion batteries, accounting for about 10-15% of the cost of lithium batteries. The composition and structure of negative electrode materials have a decisive influence on the electrochemical performance of lithium-ion batteries. The preparation process of negative electrode materials generally includes a granulation process, which is usually completed in a granulation kettle. At present, there are two types of granulation kettles: intermittent and continuous.

[0003] The existing continuous granulation kettle is usually a drum type. For example, a Chinese patent with authorization announcement number CN219560376U and authorization announcement date of August 22, 2023 discloses a screening device and a granulation reactor. This drum type continuous granulation kettle has the following defects:

[0004] 1. The material is broken up by the baffle, so many baffles and other accessories are set on the inner surface of the drum, which makes it easy for the material to get stuck;

[0005] Second, the finished product after granulation has a low compaction density due to the rolling and collision of the material itself. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model aims to provide a continuous granulation kettle, which solves the problems of easy material jamming and low tap density of finished products in the prior art continuous granulation kettle.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A continuous granulation kettle, comprising a kettle body and a stirring mechanism, wherein the kettle body is provided with a feed inlet and a discharge inlet, and the kettle body is in a horizontal cylindrical shape;

[0009] The stirring mechanism comprises a motor, a stirring shaft and blades, wherein the axial direction of the stirring shaft is consistent with the axial direction of the kettle body, one end of the stirring shaft is inserted into one end of the kettle body, and the other end passes through the other end of the kettle body and is connected to the motor output shaft, and the blades are fixed on the stirring shaft;

[0010] The blades are composed of a plurality of spiral blade units, which are arranged along the axial direction of the stirring shaft, and a reinforcing mechanism for strengthening the connection between the stirring shaft and the kettle body is arranged between adjacent spiral blade units.

[0011] Preferably, the reinforcing mechanism comprises a hanging member and a supporting member, wherein the hanging member is used to suspend the stirring shaft in the kettle body, and the supporting member is used to support the stirring shaft upward.

[0012] Preferably, the suspension member includes a suspension rod and a first ring, the upper end of the suspension rod is fixed to the top of the kettle body, and the lower end is fixed to the first ring, and the first ring is sleeved on the stirring shaft.

[0013] Preferably, the support member includes a support rod and a second ring, the lower end of the support rod is fixed to the inner bottom of the kettle body, and the upper end is fixed to the second ring, and the second ring is sleeved on the stirring shaft.

[0014] Preferably, the suspension members and the support members are alternately arranged along the axial direction of the stirring shaft.

[0015] Preferably, the outer surface of the kettle body is provided with a jacket, and the jacket includes a preheating zone, a heat preservation zone and a high temperature zone, and the preheating zone, the heat preservation zone and the high temperature zone are arranged in sequence along the material conveying direction.

[0016] Preferably, the temperature of the preheating zone is controlled at 25-200°C;

[0017] And / or, the temperature of the insulation zone is controlled at 300-700°C;

[0018] And / or, the temperature of the high temperature zone is not less than 900°C.

[0019] Preferably, the feed port is arranged at the top of one end of the kettle body, and the discharge port is arranged at the bottom of the other end of the kettle body.

[0020] Preferably, the bottom of the kettle body is provided with supporting legs, and the supporting legs are fixed at two ends of the bottom of the kettle body.

[0021] Preferably, it further comprises a support frame, wherein the support frame is located at one end outside the kettle body, and the motor is mounted on the support frame.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. The spiral blades are used for stirring and transmission, so that materials such as asphalt and tar are fully mixed under the action of external force for granulation. The obtained material has a high tap density and is not easy to get stuck;

[0024] 2. The suspension and support parts can play the role of "hanging up and supporting down", so that the stress points of the kettle body are no longer the two ends in contact with the stirring shaft. In this way, the stirring shaft will run more stably, the force on the kettle body will be more even, and the service life of the equipment will be improved. In addition, the stroke of the kettle body is generally set to be very long. Under the action of the gravity of the stirring shaft and the spiral blades themselves, the middle part of the stirring shaft is subjected to excessive force and it is easy to bend or bend downward. For this reason, the utility model is provided with suspension and support parts, which can play a good suspension and support role without affecting the rotation of the stirring shaft, and has a good fixing effect;

[0025] 3. The granulation kettle is generally required to granulate at 600-1200℃, usually around 900℃. Due to the high temperature, materials such as asphalt and tar are directly raised to such a high temperature without preheating. On the one hand, it will affect the granulation quality. On the other hand, the temperature fluctuation will be large due to the large temperature difference. For this reason, the utility model is provided with a preheating zone, a heat preservation zone and a high temperature zone, so that materials such as asphalt and tar are first stirred evenly and preheated in the preheating zone, and then the coating granulation is started after entering the heat preservation zone and the high temperature zone, thereby improving the granulation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a side view schematic diagram of the utility model;

[0028] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0029] Figure 4 It is a schematic diagram of the structure of the stirring mechanism and the strengthening mechanism of the utility model.

[0030] In the figure, 1, kettle body; 201, preheating zone; 202, insulation zone; 203, high temperature zone; 3, legs; 4, support frame; 5, stirring mechanism; 51, motor; 52, stirring shaft; 53, blades; 6, feed inlet; 7, discharge port; 81, hanging part; 811, hanging rod; 812, first set of rings; 82, support part; 821, support rod; 822, second set of rings. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] Example

[0039] A continuous granulation kettle, such as Figure 1-4 As shown, it includes a kettle body 1, a stirring mechanism 5 and a support frame 4. The kettle body 1 is a horizontal cylindrical shape, and is provided with a feed port 6 and a discharge port 7. The feed port 6 is arranged at the top of one end of the kettle body 1, and the discharge port 7 is arranged at the bottom of the other end of the kettle body 1. The bottom of the kettle body 1 is provided with a support leg 3, and the support leg 3 is fixed at both ends of the bottom of the kettle body 1.

[0040] Preferably, according to the on-site installation conditions and the continuous granulation requirements, the kettle body 1 can be installed horizontally or tilted at a certain angle, which is not specifically limited in the present invention. When installed horizontally, it is sufficient as long as the legs 3 at both ends are installed at the same height. In this embodiment, the kettle body 1 is installed horizontally. When installed tilted, it is sufficient as long as the support height of the legs 3 at the material inlet end is higher than the support height of the legs 3 at the material outlet end.

[0041] The stirring mechanism 5 includes a motor 51, a stirring shaft 52 and blades 53. The axial direction of the stirring shaft 52 is consistent with the axial direction of the kettle body 1. One end of the stirring shaft 52 is inserted into one end of the kettle body 1, and the other end passes through the other end of the kettle body 1 and is connected to the output shaft of the motor 51. The motor 51 is located on the outside of the material inlet end of the kettle body 1. The support frame 4 is located at one end outside the kettle body 1, and the motor 51 is installed on the support frame 4. The blades 53 are fixed on the stirring shaft 52 and are used to stir and transport materials. Preferably, the blades 53 are composed of a plurality of spiral blade units, and the plurality of spiral blade units are arranged at equal intervals along the axial direction of the stirring shaft 52. In order to reduce the residual material in the kettle body 1, the outer surface of the spiral blade unit should be in contact with the inner surface of the kettle body 1 as much as possible. The length of the kettle body 1 can be set according to the granulation requirements and site requirements, and is not specifically limited here.

[0042] Reference Figure 1-4 A reinforcing mechanism for reinforcing the connection between the stirring shaft 52 and the kettle body 1 is provided between adjacent spiral blade units. The reinforcing mechanism includes a suspension member 81 and a support member 82. The suspension member 81 is used to suspend the stirring shaft 52 in the kettle body 1, and the support member 82 is used to support the stirring shaft 52 upward. The suspension member 81 and the support member 82 are alternately arranged along the axial direction of the stirring shaft 52. Specifically, in this embodiment, four spiral blade units are provided, and three reinforcing mechanisms are provided. Among the three reinforcing mechanisms, two are suspension members 81 and the other is a support member 82. The support member 82 is located in the middle of the stirring shaft 52, and the two suspension members 81 are located on opposite sides of the support member 82.

[0043] Preferably, the hanging member 81 includes a hanging rod 811 and a first ring 812 . The upper end of the hanging rod 811 is fixed to the top of the kettle body 1 , and the lower end is fixed to the first ring 812 . The first ring 812 is sleeved on the stirring shaft 52 .

[0044] Preferably, the support member 82 includes a support rod 821 and a second ring 822 . The lower end of the support rod 821 is fixed to the bottom of the kettle body 1 , and the upper end is fixed to the second ring 822 . The second ring 822 is sleeved on the stirring shaft 52 .

[0045] The outer surface of the kettle body 1 is provided with a jacket, which includes a preheating zone 201, a heat preservation zone 202 and a high temperature zone 203. The preheating zone 201, the heat preservation zone 202 and the high temperature zone 203 are arranged in sequence along the material conveying direction. The preheating zone 201, the heat preservation zone 202 and the high temperature zone 203 are heated by electric heating rods or other electric heating equipment.

[0046] Preferably, the temperature of the preheating zone 201 is controlled at 25-200°C. In this embodiment, the temperature of the preheating zone 201 is 150±10°C.

[0047] Preferably, the temperature of the heat preservation zone 202 is controlled at 300-700°C. In this embodiment, the temperature of the heat preservation zone 202 is 600±50°C.

[0048] Preferably, the temperature of the high temperature zone 203 is not less than 900°C. In this embodiment, the temperature of the high temperature zone 203 is 905±5°C.

[0049] In the present invention, after materials such as asphalt and tar enter the kettle body 1 through the feed port 6 , the spiral blade unit will continuously stir the materials such as asphalt and tar under the drive of the stirring shaft 52 , and the granulated materials will eventually be discharged through the discharge port 7 .

[0050] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0053] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0054] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0055] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0056] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A continuous granulation kettle, comprising a kettle body (1) and a stirring mechanism (5), wherein the kettle body (1) is provided with a feed inlet (6) and a discharge outlet (7), characterized in that: The kettle body (1) is in a horizontal cylindrical shape; the stirring mechanism (5) comprises a motor (51), a stirring shaft (52) and a blade (53); the axial direction of the stirring shaft (52) is consistent with the axial direction of the kettle body (1); one end of the stirring shaft (52) is inserted into one end of the kettle body (1), and the other end passes through the other end of the kettle body (1) and is connected to the output shaft of the motor (51); the blade (53) is fixed on the stirring shaft (52); the blade (53) is composed of a plurality of spiral blade units, and the plurality of spiral blade units are arranged along the axial direction of the stirring shaft (52); and a reinforcing mechanism for reinforcing the connection between the stirring shaft (52) and the kettle body (1) is provided between adjacent spiral blade units.

2. A continuous granulation kettle according to claim 1, characterized in that: The reinforcing mechanism comprises a hanging member (81) and a supporting member (82), wherein the hanging member (81) is used to hang the stirring shaft (52) in the kettle body (1), and the supporting member (82) is used to support the stirring shaft (52) upward.

3. A continuous granulation kettle according to claim 2, characterized in that: The hanging member (81) comprises a hanging rod (811) and a first ring (812); the upper end of the hanging rod (811) is fixed to the top of the kettle body (1), and the lower end is fixed to the first ring (812); the first ring (812) is sleeved on the stirring shaft (52).

4. A continuous granulation kettle according to claim 2, characterized in that: The support member (82) comprises a support rod (821) and a second sleeve ring (822); the lower end of the support rod (821) is fixed to the bottom of the kettle body (1); the upper end is fixed to the second sleeve ring (822); and the second sleeve ring (822) is sleeved on the stirring shaft (52).

5. A continuous granulation kettle according to claim 2, characterized in that: The suspension members (81) and the support members (82) are alternately arranged along the axial direction of the stirring shaft (52).

6. A continuous granulation kettle according to any one of claims 1 to 5, characterized in that: The outer surface of the kettle body (1) is provided with a jacket, the jacket comprising a preheating zone (201), a heat preservation zone (202) and a high temperature zone (203), and the preheating zone (201), the heat preservation zone (202) and the high temperature zone (203) are arranged in sequence along the material conveying direction.

7. A continuous granulation kettle according to claim 6, characterized in that: The temperature of the preheating zone (201) is controlled at 25-200°C; and / or the temperature of the heat preservation zone (202) is controlled at 300-700°C; and / or the temperature of the high temperature zone (203) is not less than 900°C.

8. A continuous granulation kettle according to claim 1, characterized in that: The feed port (6) is arranged at the top of one end of the kettle body (1), and the discharge port (7) is arranged at the bottom of the other end of the kettle body (1).

9. A continuous granulation kettle according to claim 1, characterized in that: The bottom of the kettle body (1) is provided with supporting legs (3), and the supporting legs (3) are fixed at both ends of the bottom of the kettle body (1).

10. A continuous granulation kettle according to claim 1, characterized in that: It also comprises a support frame (4), wherein the support frame (4) is located at one end outside the kettle body (1), and the motor (51) is mounted on the support frame (4).

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