A high mixer

Abstract

The utility model provides a high-speed mixer, by adding a pulse back-blowing device on the high-speed mixer, the design of the pulse back-blowing device is simple, that is, compressed air enters the front and rear air chambers to control the working parameters through the armature switch, and the device is easy to install and maintain, that is, it can be fixed on the high-speed mixer air cap through an air-permeable columnar bracket. In the utility model, the pulse back-blowing device can intermittently generate pulse high-pressure airflow (0.1-1MPa), and return the materials gathered in the air cap to the mixing system, so that the stirred materials are more uniform and the loss of abnormal materials is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-mix machines, and in particular relates to a high-mix machine. Background Art

[0002] Lithium-ion battery is a highly efficient energy storage device, and the selection of its positive electrode material has an important influence on its performance. Among them, lithium cobalt oxide (LiCoO2) is widely used as the positive electrode material of lithium-ion batteries due to its high energy density and good electrochemical properties. At present, in the process of preparing lithium cobalt oxide positive electrode materials, mixing is a key step, the purpose of which is to evenly mix various raw materials to ensure the quality of the final product. However, some problems may arise in the mixing process. For example, when the existing mixing equipment is running, some lithium carbonate will gather above the breathable cap due to its low true density and cannot enter the mixing system, resulting in a large deviation between the lithium content in the final mixed material and the calculated value, causing the material to be lithium-deficient, seriously affecting the mixing effect of the material, and then affecting the performance of the final product. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide a high-speed mixer. A pulse back-blower is arranged above the air permeable cap of the high-speed mixer, so that lithium carbonate can be blown into the high-speed mixer for mixing, thereby ensuring the mixing effect.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a high-speed mixer, which comprises:

[0006] A high-mixer body; the high-mixer body includes a high-mixer upper cover and a high-mixer vent cap located above the high-mixer upper cover;

[0007] and a pulse backflush device fixedly connected to the upper cover of the high-pressure mixer via a support column;

[0008] The height of the support column is 1-5 cm.

[0009] Preferably, the height of the support column is 2-4 cm.

[0010] Preferably, the number of the support columns is 3 to 6.

[0011] Preferably, the angle between the central axis of the pulse backflush device and the upper cover of the high-speed mixer is 87-90°.

[0012] Preferably, the angle between the central axis of the pulse backflush device and the upper cover of the high-speed mixer is 88-90°.

[0013] Preferably, the pulse backflush device comprises:

[0014] The throttle hole through which the compressed air enters;

[0015] a front air chamber connected to the throttle hole;

[0016] A diaphragm isolating the front air chamber and the rear air chamber;

[0017] a nozzle in communication with the rear air chamber;

[0018] The nozzle is used to blow compressed air into the high-speed mixer air cap.

[0019] Preferably, the pulse back-blowing device further comprises an air vent, and the air vent is connected to the atmosphere.

[0020] Preferably, the pulse backflush device further comprises an armature;

[0021] The armature is connected to a pulse controller and is used to block or flow compressed air.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model provides a high-speed mixer. By installing a pulse back-blowing device above the high-speed mixer, the design of the pulse back-blowing device is simple, that is, after the pulse controller receives the signal, the compressed air in the air storage tank enters the front and rear air chambers through the armature switch and the throttle hole, and then the gas is ejected through the nozzle. The equipment is easy to install and maintain, that is, it can be fixed above the air cap of the high-speed mixer through a columnar bracket. In the utility model, the pulse back-blowing device can intermittently generate a pulse high-pressure airflow (0.1~1 MPa) to return the material accumulated in the air cap to the mixing system, so that the stirred material is more uniform and the loss of abnormal materials is reduced. Furthermore, by accurately controlling the installation angle and position of the pulse reaction device, it can be ensured that the pulse back-blowing device can accurately align with the air cap and effectively remove the accumulated materials. At the same time, by monitoring the working time, working frequency and other parameters of the pulse back-blowing device, it can be ensured that it will not have too much impact on the properties of the material such as temperature or humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a high-mix mixer provided by the utility model;

[0025] Wherein, 1 is a pulse backflush device, 18 is a high-mixer air cap, 30 is a high-mixer upper cover, and 31 is a high-mixer body;

[0026] Figure 2 A schematic diagram of the structure of the pulse backflush device provided by the utility model;

[0027] Among them, 11 is the armature, 12 is the vent hole, 13 is the front air chamber, 14 is the diaphragm, 15 is the rear air chamber, 16 is the nozzle, 17 is the throttling hole, 18 is the air cap, 19 is the support column, 20 is the pulse controller, 21 is the air storage tank, and 30 is the upper cover of the high-mixer. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In view of the shortcomings of the prior art, the utility model provides a high-speed mixer, the structural schematic diagram of which is shown in Figure 1 As shown, including:

[0030] The high-mixer body 31; the high-mixer body 31 includes a high-mixer upper cover 30 and a high-mixer air permeable cap 18 located above the high-mixer upper cover 30;

[0031] And a pulse backflush device 1 fixedly connected to the high-pressure mixer upper cover 30 via a support column 19.

[0032] In some embodiments of the present invention, a pulse back-blowing device 1 is installed above the high-mixer air cap 18, and a support column 19 of a certain height (1~5 cm, preferably 2~4 cm) is installed between the spray outlet and the high-mixer upper cover 30. If the height of the support column is lower than 1 cm, it will cause poor exhaust and affect the airflow of the mixing system. If it is higher than 5 cm, the spraying effect will be poor and the design requirements cannot be met. The number of support columns 19 is greater than or equal to 3, and can be specifically 3 to 6, so as to reduce the impact on the mixing system.

[0033] The pulse backflush device 1 provided by the utility model can intermittently generate pulse high-pressure airflow (0.1-1 MPa) to return the materials gathered in the high-mixer air cap 18 to the mixing system, thereby making the mixed materials more uniform and reducing abnormal material loss.

[0034] In the present invention, the design and installation position of the pulse back-blowing device 1 should ensure that it can effectively remove the materials on the high-mixer air cap 18 and will not interfere with the normal operation of the mixing system. Therefore, in some embodiments of the present invention, the position and angle of the pulse back-blowing device 1 are precisely controlled: the pulse back-blowing device 1 is directly above the high-mixer air cap 18, and the specific position is that the distance between the lower edge of the pulse back-blowing device 1 and the high-mixer upper cover 30 is 1 to 5 cm, and the angle is that the acute angle between the central axis of the pulse back-blowing device 1 and the high-mixer upper cover 30 is 87 to 90°, preferably 88 to 90°, and most preferably 90°. In the present invention, the position and angle of the pulse back-blowing device 1 can be achieved by using a precise positioning device and an angle measurement tool to ensure that the pulse back-blowing device 1 can be accurately aligned with the high-mixer air cap 18 and effectively remove the accumulated materials.

[0035] In the present invention, the structural schematic diagram of the pulse backflush device 1 is as follows Figure 2 As shown, including:

[0036] A throttle hole 17 through which the compressed air in the air tank 21 enters;

[0037] A front air chamber 13 connected to the throttle hole 17;

[0038] A diaphragm 14 isolating the front air chamber 13 and the rear air chamber 15;

[0039] a nozzle 16 in communication with the rear air chamber 15;

[0040] The nozzle is used to blow compressed air into the high-mixer air cap 18 .

[0041] In some embodiments of the present invention, the pulse backflush device 1 further comprises an air vent 12, and the air vent 12 is connected to the atmosphere to reduce the internal pressure.

[0042] In some embodiments of the present invention, the pulse back-blowing device 1 further comprises an armature 11; the armature is connected to a pulse controller, and when a signal is received, the armature is sucked up and opened by electromagnetic force to achieve the purpose of rapid passage of compressed air.

[0043] In some embodiments of the present invention, in order to reduce the impact of the pulse back-blowing device 1 on the complexity and maintenance cost of the equipment, it is necessary to optimize its design and material selection. The present invention selects lightweight and durable materials to make the pulse back-blowing device 1 to reduce the weight of the equipment and reduce the need for maintenance. At the same time, the design of the pulse back-blowing device 1 is simple, that is, after the pulse controller 20 receives the signal, the compressed air in the air tank 21 enters the front air chamber 13 and the rear air chamber 15 through the armature 11 switch and the throttle hole 17, and then the gas is ejected through the nozzle 16, and the equipment is easy to install and maintain, that is, it can be fixed above the high-mixer air cap through a columnar bracket. The diaphragm 14 that isolates the front air chamber 13 and the rear air chamber 15 is a porous diaphragm, which can adjust the pressure of the compressed gas to reach the nozzle to ensure the blowing effect on the material on the high-mixer air cap 18. In some embodiments of the present invention, in order to reduce the impact of the pulse back-blowing device 1 on the material properties, it is necessary to monitor and adjust its working parameters. By monitoring the working time (0.1~2 s), working frequency (1~30 min / time) and other parameters of the pulse backflush device 1, it is ensured that it will not have excessive impact on the temperature or humidity and other properties of the material.

[0044] Compared with the prior art, the technical solution provided by the utility model mainly solves the following technical problems:

[0045] 1) A pulse back-flushing device 1 is installed above the high-mixer air cap 18 to mix the materials evenly and avoid a large deviation between the lithium content of the mixed materials and the calculated value; 2) The installation position and angle of the pulse back-flushing device 1 can be precisely controlled to effectively remove the accumulated materials; 3) The use of the pulse back-flushing device 1 may increase the complexity and maintenance cost of the equipment. The utility model selects lightweight and durable materials to reduce the weight of the equipment and the need for maintenance; 4) The use of the pulse back-flushing device may affect the properties of the material, such as changing the temperature, humidity, magnetism, etc. of the material. The utility model monitors the working parameters of the pulse back-flushing device 1 to ensure that it does not have an excessive impact on the temperature or humidity and other properties of the material.

[0046] In order to further illustrate the utility model, the following examples are used to explain the utility model in detail. The experimental raw materials used in the following examples of the utility model are all common commercial products. Example 1

[0047] This embodiment provides a high-speed mixer, and its structural diagram is as follows: Figure 1 As shown, including:

[0048] The high-mixer body 31; the high-mixer body 31 includes a high-mixer upper cover 30 and a high-mixer air permeable cap 18 located above the high-mixer upper cover 30;

[0049] and a pulse backflush device 1 fixedly connected to the high-mixer upper cover 30 via a support column 19 with a height of 5 cm;

[0050] The pulse backflush device 1 is made of polytetrafluoroethylene, and the angle between its axis and the high-mixer upper cover 30 is 87°.

[0051] The structural schematic diagram of the pulse backflush device 1 is as follows Figure 2 As shown, including:

[0052] A gas storage tank 21 containing compressed air;

[0053] A throttle hole 17 for compressed air to enter;

[0054] A front air chamber 13 connected to the throttle hole 17;

[0055] A diaphragm 14 isolating the front air chamber 13 and the rear air chamber 15;

[0056] a nozzle 16 in communication with the rear air chamber 15;

[0057] The nozzle is used to blow compressed air into the high-mixer air cap 18;

[0058] The air release hole 12 is connected to the cavity below the armature and is used to adjust the injection pressure;

[0059] The armature 11 is connected to the pulse controller 20. When a signal is received, the armature is sucked up and opened by electromagnetic force so that the compressed air in the air storage tank 21 can pass through quickly.

[0060] Working status: When the pulse controller 20 sends a signal, the armature 11 is sucked up and opened by the electromagnetic force, and the compressed air in the air tank 21 passes quickly, and the compressed air passes through the throttle hole 17, the front air chamber 13, the diaphragm 14, the rear air chamber 15, and finally ejected through the nozzle 16. The compressed air pushes the uneven materials gathered on the high-mixer air cap 18 back to the mixer, and the remaining gas is discharged through the gap between the support columns. The pulse backflush 1 is connected to the atmosphere through the vent hole 12 to reduce the internal pressure. When there is no signal from the pulse controller, the armature 11 is closed and the compressed air cannot pass. Set the frequency to 10 min / time, and repeat it repeatedly.

[0061] The prepared lithium cobalt oxide raw material was mixed using the high speed mixer, and the theoretical lithium content of the mixed material was 6.10 wt %, and the tested lithium content after the mixing was 6.05 wt %. Example 2

[0062] This embodiment provides a high-speed mixer, and its structural diagram is as follows: Figure 1 As shown, including:

[0063] The high-speed mixer body 31 includes a high-speed mixer upper cover 20 and a high-speed mixer air permeable cap 18 located above the high-speed mixer upper cover 20;

[0064] and a pulse backflush device 1 fixedly connected to the high-mixer upper cover 20 via a support column 19 with a height of 1 cm;

[0065] The pulse backflush device 1 is made of polytetrafluoroethylene, and the angle between its axis and the high-mixer upper cover 20 is 90°.

[0066] The structural schematic diagram of the pulse backflush device 1 is as follows Figure 2 As shown, including:

[0067] A gas storage tank 21 containing compressed air;

[0068] A throttle hole 17 for compressed air to enter;

[0069] A front air chamber 13 connected to the throttle hole 17;

[0070] A diaphragm 14 isolating the front air chamber 13 and the rear air chamber 15;

[0071] a nozzle 16 in communication with the rear air chamber 15;

[0072] The nozzle is used to blow compressed air into the high-mixer air cap 18;

[0073] The air release hole 12 is connected to the cavity below the armature and is used to adjust the injection pressure;

[0074] The armature 11 is connected to the pulse controller 20. When a signal is received, the armature is sucked up and opened by the electromagnetic force to achieve the purpose of rapid passage of compressed air. Working state: When the pulse controller 20 sends a signal, the armature 11 is sucked up and opened by the electromagnetic force, and the compressed air in the air tank 21 passes quickly. The compressed air passes through the throttle hole 17, the front air chamber 13, the diaphragm 14, the rear air chamber 15, and finally sprayed out through the nozzle 16. The compressed air pushes the uneven materials gathered on the high mixer air cap 18 back to the mixer, and the remaining gas is discharged through the gap between the support columns. The pulse backflush 1 is connected to the atmosphere through the vent hole 12 to reduce the internal pressure. When there is no signal from the pulse controller, the armature 11 is closed and the compressed air cannot pass. Set the frequency to 10 min / time, and repeat it repeatedly.

[0075] The prepared lithium cobalt oxide raw material was mixed using the high speed mixer, and the theoretical lithium content of the mixed material was 6.10 wt %, and the tested lithium content after the mixing was 6.08 wt %. Comparative Example 1

[0076] This embodiment provides a high-speed mixer, and its structural diagram is as follows: Figure 1 As shown, including:

[0077] The high-mixer body 31; the high-mixer body 31 includes a high-mixer upper cover 30 and a high-mixer air permeable cap 18 located above the high-mixer upper cover 30;

[0078] and a pulse backflush device 1 fixedly connected to the high-mixer upper cover 30 via a support column 19 with a height of 8 cm;

[0079] The pulse backflush device 1 is made of polytetrafluoroethylene, and the angle between its axis and the high-mixer upper cover 20 is 85°.

[0080] The structural schematic diagram of the pulse backflush device 1 is as follows Figure 2 As shown, including:

[0081] A throttle hole 17 for compressed air to enter;

[0082] A front air chamber 13 connected to the throttle hole 17;

[0083] A diaphragm 14 isolating the front air chamber 13 and the rear air chamber 15;

[0084] a nozzle 16 in communication with the rear air chamber 15;

[0085] The nozzle is used to blow compressed air into the high-mixer air cap 18;

[0086] The air release hole 12 is connected to the cavity below the armature 11 and is used to adjust the injection pressure;

[0087] The armature 11 is connected to the pulse controller. When a signal is received, the armature is sucked up and opened by electromagnetic force to achieve the purpose of rapid pressure relief of compressed air.

[0088] Working status: When the pulse controller 20 sends a signal, the armature 11 is sucked up and opened by the electromagnetic force, and the compressed air in the air tank 21 passes quickly, and the compressed air passes through the throttle hole 17, the front air chamber 13, the diaphragm 14, the rear air chamber 15, and finally ejected through the nozzle 16. The compressed air pushes the uneven materials gathered on the high-mixer air cap 18 back to the mixer, and the remaining gas is discharged through the gap between the support columns. The pulse backflush 1 is connected to the atmosphere through the vent hole 12 to reduce the internal pressure. When there is no signal from the pulse controller, the armature 11 is closed and the compressed air cannot pass. Set the frequency to 10 min / time, and repeat it repeatedly.

[0089] The prepared lithium cobalt oxide raw material was mixed using the high speed mixer, and the theoretical lithium content of the mixed material was 6.10 wt %, and the tested lithium content after the mixing was 5.91 wt %.

[0090] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-mix machine, characterized in that: include: High mixing machine body; The high-speed mixer body includes a high-speed mixer upper cover and a high-speed mixer air permeable cap located above the high-speed mixer upper cover; and a pulse backflush device fixedly connected to the upper cover of the high-pressure mixer via a support column; The height of the support column is 1-5 cm.

2. The high-mix machine according to claim 1, characterized in that: The pulse backflush device comprises: The throttle hole through which the compressed air enters; a front air chamber connected to the throttle hole; a diaphragm isolating the front air chamber and the rear air chamber; A nozzle is connected to the rear air chamber, and the nozzle is used to blow compressed air into the high-mixer air cap.

3. The high-mix machine according to claim 1, characterized in that: The pulse back-blowing device also includes an air vent hole, which is connected to the atmosphere.

4. The high-speed mixer according to claim 2 or 3, characterized in that: The pulse backflush device also includes an armature; The armature is connected to a pulse controller and is used to block or flow compressed air.

5. The high-mix machine according to claim 1, characterized in that: The height of the support column is 2-4 cm.

6. The high-mix machine according to claim 1, characterized in that: The number of the support columns is 3 to 6.

7. The high-mix machine according to claim 1, characterized in that: The angle between the central axis of the pulse backflush device and the upper cover of the high-speed mixer is 87-90 degrees.

8. The high-mix machine according to claim 7, characterized in that: The angle between the central axis of the pulse backflush device and the upper cover of the high-speed mixer is 88-90 degrees.

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