Oxygen mixing unit for cathode material production

Abstract

This utility model discloses an oxygen mixing device for cathode material production, including a mixer, a dilution gas path, and a distribution gas path. The inlet of the dilution gas path is connected to a dilution gas source, and the outlet of the dilution gas path is connected to the mixer. The inlet of the distribution gas path is connected to an oxygen source, and the outlet of the distribution gas path is connected to the mixer. The distribution gas path includes a first pressure controller and a first distribution branch, a second distribution branch, a third distribution branch, and a fourth distribution branch, each connected to the first pressure controller. This utility model, by setting four distribution branches, can meet the adjustment of large, medium, small, and trace amounts of gas consumption at the gas user end. Furthermore, while adjusting the mixed gas supply, it can avoid changes in the output mixed gas concentration, ensuring consistent gas concentration while adjusting the gas consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of oxygen mixing devices, and in particular to an oxygen mixing device for the production of cathode materials. Background Technology

[0002] The production of battery cathode materials requires an atmosphere with a specific oxygen content. In actual production, a mixture of gases with a specific oxygen concentration is quantitatively supplied to the gas-consuming equipment. The gas input is fixed and cannot be adjusted according to the gas consumption at the gas-consuming end. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mixed oxygen device for the production of cathode materials. By setting up four gas distribution branches, it can meet the adjustment of large, medium, small and micro gas consumption at the gas consumption end. Moreover, while adjusting the supply of mixed gas, it can avoid changes in the concentration of the output mixed gas, and ensure consistent gas concentration while adjusting the gas consumption.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An oxygen mixing device for producing cathode materials includes a mixer, a dilution gas path, and a distribution gas path. The inlet of the dilution gas path is connected to a dilution gas source, the outlet of the dilution gas path is connected to the mixer, the inlet of the distribution gas path is connected to an oxygen source, and the outlet of the distribution gas path is connected to the mixer.

[0006] The gas distribution path includes a first pressure controller, a first gas distribution branch, a second gas distribution branch, a third gas distribution branch, and a fourth gas distribution branch, all connected to the first pressure controller. The first gas distribution branch includes a first pneumatic regulating valve and a first flow meter. The second gas distribution branch includes a second pneumatic regulating valve and a second flow meter. The third gas distribution branch includes a first solenoid valve and a first flow controller. The fourth gas distribution branch includes a second solenoid valve and a second flow controller. The rated full-scale flow rates of the first flow meter, the second flow meter, the first flow controller, and the second flow controller decrease sequentially.

[0007] Furthermore, the dilution gas path includes a second pressure controller, a pneumatic valve, and a third flow meter connected in sequence.

[0008] Furthermore, filters are provided between the dilution gas path and the dilution gas source, and between the gas distribution path and the oxygen source.

[0009] Furthermore, the first gas distribution branch, the second gas distribution branch, the third gas distribution branch, and the fourth gas distribution branch are respectively connected to the first safety valve.

[0010] Furthermore, a pressure gauge is provided in the dilution gas line, and the pressure gauge is located between the second pressure controller and the pneumatic valve.

[0011] Furthermore, fire stop valves are provided between the second pressure controller and the pressure gauge, and between the third flow meter and the mixer.

[0012] Furthermore, fire stop valves are provided between the first flow meter and the mixer, between the second flow meter and the mixer, between the first flow controller and the mixer, and between the second flow controller and the mixer.

[0013] The beneficial effects of this utility model are:

[0014] This invention, by setting up four gas distribution branches, can meet the adjustment of large, medium, small and micro gas consumption at the gas consumption end. Moreover, while adjusting the supply of mixed gas, it can avoid changes in the output mixed gas concentration, thus ensuring consistent gas concentration while adjusting the gas consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the working principle of the oxygen mixing device for producing cathode materials in this embodiment of the present invention.

[0016] In the diagram, 1. Mixer; 2. First pressure controller; 3. First pneumatic regulating valve; 4. First flow meter; 5. Second pneumatic regulating valve; 6. Second flow meter; 7. First solenoid valve; 8. First flow controller; 9. Second solenoid valve; 10. Second flow controller; 11. Second pressure controller; 12. Pneumatic valve; 13. Third flow meter; 14. Filter; 15. Pressure gauge; 16. Flame stop valve; 17. Oxygen concentration analyzer. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] See Figure 1 This utility model provides a technical solution:

[0019] Example:

[0020] like Figure 1As shown, an oxygen mixing device for producing cathode materials includes a mixer 1, a dilution gas path, and a distribution gas path. The inlet of the dilution gas path is connected to a dilution gas source through a filter 14, and the outlet of the dilution gas path is connected to the mixer 1. The inlet of the distribution gas path is connected to an oxygen source through a filter 14, and the outlet of the distribution gas path is connected to the mixer 1. The dilution gas path includes a second pressure controller 11, a flame stop valve 16, a pressure gauge 15, a pneumatic valve 12, a third flow meter 13, and the flame stop valve 16 connected in sequence.

[0021] The gas distribution path includes a first pressure controller 2 (wherein, the pressure controller is a manual pressure regulating valve used to control the gas to enter the (dilution / distribution) gas path at a pressure of 0.6-0.8 MPa), a first gas distribution branch, a second gas distribution branch, a third gas distribution branch, and a fourth gas distribution branch respectively connected to the first pressure controller 2. The first gas distribution branch includes a first pneumatic regulating valve 3, a first flow meter 4, and a flame stop valve 16 arranged in sequence. The second gas distribution branch includes a second pneumatic regulating valve 5, a second flow meter 6, and a flame stop valve 16 arranged in sequence. The three gas distribution branches include a first solenoid valve 7, a first flow controller 8, and a flame stop valve 16 arranged in sequence. The fourth gas distribution branch includes a second solenoid valve 9, a second flow controller 10, and a flame stop valve 16 arranged in sequence. In this embodiment, the rated full-scale flow rates of the first flow meter 4, the second flow meter 6, the first flow controller 8, and the second flow controller 10 are 2000 m³ / h, 1000 m³ / h, 200 m³ / h, and 180 m³ / h, respectively. The rated full-scale flow rate of the third flow meter 13 is 2500 m³ / h.

[0022] The first gas distribution branch, the second gas distribution branch, the third gas distribution branch and the fourth gas distribution branch are respectively connected to the first safety valve.

[0023] In order to achieve automatic control, this application also includes a PLC aerobic concentration analyzer 17 (PLC and oxygen concentration analyzer 17 are both existing technologies commonly used by those skilled in the art, and their structure and principle will not be described in detail here). The oxygen concentration analyzer 17 is connected to the mixer 1 and is used to detect the oxygen concentration of the mixed gas in the mixer 1.

[0024] Working principle: The dilution gas is air. After being filtered by filter 14, the air is pressurized by the second pressure controller 11 to enter the dilution gas path at a pressure of 0.6-0.8 MPa. The air then enters the mixer 1 after the flow rate is controlled by the third flow meter 13. Similarly, high-purity oxygen (oxygen concentration greater than 90%) enters the mixer 1 through the gas distribution path for mixing.

[0025] The oxygen concentration analyzer 17 monitors the oxygen concentration in the mixer 1 in real time. If the oxygen concentration is too high, the flow rate of the third flow meter 13 is increased. If the oxygen concentration is too low, the first flow meter 4 or the second flow meter 6 is selected to control the flow rate of high-purity oxygen in order to increase the oxygen supply.

[0026] The first, second, third, and fourth gas distribution branches regulate the large, medium, small, and micro gas consumption at the application end, respectively. Under normal use, the third gas distribution branch supplies pure oxygen. If the gas consumption at the application end suddenly increases exponentially, the system switches to the second gas distribution branch, where the second flow meter 6 controls the flow (and the corresponding third flow meter 13 adjusts (increases) to ensure that the mixed gas concentration remains constant) to meet the corresponding gas consumption requirements.

[0027] This invention, by setting up four gas distribution branches, can meet the adjustment of large, medium, small and micro gas consumption at the gas consumption end. Moreover, while adjusting the supply of mixed gas, it can avoid changes in the output mixed gas concentration, thus ensuring consistent gas concentration while adjusting the gas consumption.

[0028] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An oxygen mixing device for producing cathode materials, characterized in that: It includes a mixer, a dilution gas path, and a gas distribution path. The inlet of the dilution gas path is connected to a dilution gas source, and the outlet of the dilution gas path is connected to the mixer. The inlet of the gas distribution path is connected to an oxygen source, and the outlet of the gas distribution path is connected to the mixer. The gas distribution path includes a first pressure controller, a first gas distribution branch, a second gas distribution branch, a third gas distribution branch, and a fourth gas distribution branch, all connected to the first pressure controller. The first gas distribution branch includes a first pneumatic regulating valve and a first flow meter. The second gas distribution branch includes a second pneumatic regulating valve and a second flow meter. The third gas distribution branch includes a first solenoid valve and a first flow controller. The fourth gas distribution branch includes a second solenoid valve and a second flow controller. The rated full-scale flow rates of the first flow meter, the second flow meter, the first flow controller, and the second flow controller decrease sequentially.

2. The oxygen mixing device for producing cathode materials according to claim 1, characterized in that: The dilution gas path includes a second pressure controller, a pneumatic valve, and a third flow meter connected in sequence.

3. The oxygen mixing device for producing cathode materials according to claim 1, characterized in that: Filters are provided between the dilution gas path and the dilution gas source, and between the gas distribution path and the oxygen source.

4. The oxygen mixing device for producing cathode materials according to claim 1, characterized in that: The first gas distribution branch, the second gas distribution branch, the third gas distribution branch and the fourth gas distribution branch are respectively connected to the first safety valve.

5. The oxygen mixing device for producing cathode materials according to claim 2, characterized in that: A pressure gauge is installed in the dilution gas line, and the pressure gauge is located between the second pressure controller and the pneumatic valve.

6. The oxygen mixing device for producing cathode materials according to claim 5, characterized in that: Fire shut-off valves are provided between the second pressure controller and the pressure gauge, and between the third flow meter and the mixer.

7. The oxygen mixing device for producing cathode materials according to claim 1, characterized in that: Fire stop valves are provided between the first flow meter and the mixer, between the second flow meter and the mixer, between the first flow controller and the mixer, and between the second flow controller and the mixer.

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