CN220531368U

CN220531368U - Mixing device

Info

Publication number: CN220531368U
Application number: CN202322006354.4U
Authority: CN
Inventors: 李凯
Original assignee: Chongqing Talent New Energy Co Ltd
Current assignee: Chongqing Talent New Energy Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-02-27
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a mixing device, which comprises: the mixing tank comprises a mixing chamber, a mixing port and a mixing port, wherein the mixing port and the mixing port are communicated with the mixing chamber; the air charging unit is communicated with the air mixing port and is used for adding a gas material into the mixing chamber through the air mixing port; the filling unit is used for adding solid materials into the mixing chamber through the mixing opening; the rotary mixing unit is fixedly connected with the mixing tank and is used for driving the mixing tank to rotate so as to mix solid materials and gas materials in the mixing chamber.

Description

Mixing device

Technical Field

The utility model relates to the technical field of solid-gas treatment devices, in particular to a mixing device.

Background

The lithium ion battery has the advantages of high voltage, high specific energy, multiple recycling times, long storage time and the like, is widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, and is widely focused along with the continuous development of new energy industries, so that the performance and cost requirements on the lithium ion battery are higher and higher, and the improvement of the energy density is the key point of future development.

The main factors limiting battery energy density are: in the first charge process of the battery, lithium ions (about 7% -10% of active lithium) are continuously consumed to form an SEI film, so that irreversible lithium loss is caused. Lithium loss results in reduced battery capacity, reduced coulombic efficiency, and poor cycle performance. Particularly, in the case of adding a high-capacity silicon-based negative electrode material, the battery first charge cycle active lithium loss is higher. In order to solve this problem, it is currently effective to add a lithium-supplementing agent to supplement lithium ions consumed in the first charge process.

The existing lithium supplementing method is positive electrode lithium supplementing and negative electrode lithium supplementing, and the negative electrode lithium supplementing has application, but because lithium powder or lithium strips are needed to be added in the preparation process, the equipment requirement is high and the environmental requirement is extremely severe. Generally, more positive electrode lithium supplement is applied in the lithium battery industry at present, the positive electrode lithium supplement can be added in the positive electrode homogenization process, and generally, a positive electrode lithium supplement agent of a lithium-rich compound can be a lithium-rich compound, however, the positive electrode lithium supplement agent of the lithium-rich compound is unstable in air and easily reacts with H2O in the air to generate lithium hydroxide (LiOH, caustic alkali), so that the residual alkali content on the surface of the lithium-rich compound material is too high, the electrochemical activity of the lithium-rich compound material is reduced, the cycle performance of the material is affected, and the battery gas production is caused, so that potential safety hazards are caused.

In view of this problem, a common improvement in the industry is to wash the lithium-rich compound material with water to reduce its residual alkali content. However, the method often causes the lithium-rich compound material to contact with water, and the agglomeration and poor agglomeration occur, so that the problems of difficult material processing and difficult improvement of the positive electrode slurry mixing process are caused.

Disclosure of Invention

In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a mixing device that can achieve mixing of a gaseous material and a solid material, and that can achieve dealkalization of a positive electrode lithium-supplementing material when applied to positive electrode lithium supplementation.

The application provides a compounding device, include:

the mixing tank comprises a mixing chamber, a mixing port and a mixing port, wherein the mixing port and the mixing port are communicated with the mixing chamber;

the air charging unit is communicated with the air mixing port and is used for adding a gas material into the mixing chamber through the air mixing port;

the filling unit is used for adding solid materials into the mixing chamber through the mixing opening;

the rotary mixing unit is fixedly connected with the mixing tank and is used for driving the mixing tank to rotate so as to mix solid materials and gas materials in the mixing chamber.

Optionally, the method further comprises:

and the vacuumizing unit is communicated with the mixing air port and is used for vacuumizing the mixing chamber through the mixing air port before the gas material is added into the mixing chamber through the gas charging unit.

Optionally, the mixing tank is provided with a gas mixing pipe corresponding to the gas mixing port, and the gas mixing pipe is provided with a gas valve switch for controlling the gas mixing port to be opened or closed; the gas mixing cover is detachably arranged on the gas mixing pipe and is in sealing connection with one end, far away from the gas mixing port, of the gas mixing pipe; and/or

The mixing tank is provided with a mixing seat on the mixing port, and a mixing cover which is connected with the mixing seat in a sealing manner can be detachably arranged on the mixing seat.

Optionally, the air charging unit and the vacuumizing unit are detachably connected with the air mixing port through a three-way joint, wherein,

the air charging unit comprises an air source bottle and an air source pipeline which is communicated with the air source bottle and the three-way joint, and a pressure reducing valve which is used for controlling the amount of the gas material added into the mixing chamber is arranged on the air source pipeline; and/or

The vacuum pumping unit comprises a vacuum pump and a vacuum air pipe communicated with the vacuum pump and the three-way joint, and a vacuum valve for controlling the vacuum degree in the mixing chamber is arranged on the vacuum air pipe.

Optionally, the rotary mixing unit comprises a base and a rotary motor arranged on the base, and a fixing mechanism fixedly connected with the mixing tank is arranged on an output shaft of the rotary motor; the rotary motor is used for driving the mixing tank to rotate around a first axis or a second axis after the air charging unit, the vacuumizing unit and the mixing port are separated, and the first axis is perpendicular to the second axis;

the mixing tank is ellipsoidal, the mixing tank comprises a top end and a bottom end which are arranged in the height direction, and the mixing port are arranged at the top end; the first axis is the central line of the mixing tank along the height direction, and the second axis is the central line perpendicular to the height direction.

Optionally, the fixing mechanism includes a clamp fixedly connected with the mixing tank, a clamping part partially surrounding the mixing tank is arranged on the clamp, an opening for adjusting the clamping degree between the clamping part and the mixing tank and a locking part for adjusting the size of the opening are arranged on the clamping part, and a locking hole matched with the locking part is arranged on the clamping part;

the mixing tank is provided with a groove for installing the clamp, the groove is annular, and the groove is close to the central position of the mixing tank in the height direction.

Optionally, the fixing mechanism comprises a clamping seat arranged on the base and used for placing the mixing tank, and the shape of the clamping seat is matched with the shape of the bottom end of the mixing tank;

the rotary mixing unit further comprises a telescopic mechanism arranged between the output shaft and the clamp, and the telescopic mechanism is used for driving the mixing tank to be separated from the clamping seat through the clamp.

Optionally, the fixing mechanism comprises a first clamping part and a second clamping part which are fixedly connected with the mixing tank, the first clamping part is fixedly connected with the top end of the mixing tank and the output shaft, and the second clamping part is fixedly connected with the bottom end of the mixing tank;

the base is provided with a rotating seat which is rotatably connected with the second clamping part.

Optionally, the packing unit includes the material shovel, the material shovel has the discharge gate, the plane shape of discharge gate is oval, be provided with the handle on the material shovel, the material shovel is along keeping away from the ascending height of handle direction is progressively decreased.

Optionally, the mixing tank comprises an inner container and an outer container which are arranged in a stacked manner, and the mixing chamber is arranged in the inner container; an abrasive used for assisting mixing is arranged in the mixing chamber.

The technical scheme provided by the embodiment of the utility model can comprise the following beneficial effects:

according to the mixing device provided by the embodiment of the utility model, the solid material is added through the mixing port arranged on the mixing tank, the gas is added through the mixing port arranged on the mixing tank, and the mixing tank is driven to rotate by the rotating mixing unit, so that the solid material and the gas material can be fully mixed in the mixing chamber, and the mixing effect is improved; when the mixing unit is applied to a lithium ion battery, the lithium supplementing material of the positive electrode can be subjected to dealkalization treatment, and the lithium-rich compound material is mixed with carbon dioxide gas, so that the high-content residual alkali and CO on the surface of the lithium-rich compound material ₂ The reaction is carried out to generate high-purity lithium carbonate, so as to achieve the aim of reducing or completely eliminating residual alkali of lithium-rich compound materials and improve the performance and lithium supplementing effect of the battery.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of a mixing device according to an embodiment of the present utility model;

fig. 2 is a schematic view of another structural state of a mixing device according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a mixing tank according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a mixing cover according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a shovel according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of another mixing device according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a mixing device according to another embodiment of the present utility model;

fig. 8 is a side view of a mixing device according to an embodiment of the present utility model;

fig. 9 is a schematic structural view of a fixing mechanism according to an embodiment of the present utility model.

In the drawing the view of the figure,

100. a mixing tank; 200. an inflation unit; 300. a filler unit; 400. a rotary mixing unit; 500. a vacuum pumping unit;

110. a mixing chamber; 120. a mixing port; 130. a mixing port; 140. a gas mixing pipe; 150. an air valve switch; 160. a gas mixing cover; 170. a mixing seat; 180. a mixing cover; 190. a three-way joint; 101. a top end; 102. a bottom end; 103. a groove; 111. an inner container; 112. an outer bladder; 113. an abrasive;

30. a material shovel; 301. a discharge port; 302. a handle; 303. an inner pocket;

210. an air source bottle; 220. an air source pipeline; 230. a pressure reducing valve; 240. a high-pressure gauge; 250. a low pressure gauge; 310. a vacuum pump; 320. a vacuum air pipe; 330. a vacuum valve; 340. an air pressure gauge;

410. a base; 411. balancing the ground feet; 420. a rotating electric machine; 430. an output shaft; 440. a fixing mechanism; 450. a clamp; 460. a telescoping mechanism; 470. a first support mechanism; 480. a second support mechanism; 441. a first clamping part; 442. a second clamping part; 443. a rotating seat; 444. a rotation shaft; 445. a first connector; 446. a second connector;

451. a clamping part; 452. an opening; 453. a locking part; 454. a locking hole; 461. a clamping seat; 481. a second support bar; 482. a second stabilizer bar; 471. a first support bar; 472. a first stabilizer bar; 473. a support base; 401. a first clamping sub-section; 402. a second clamping sub-section; 403. locking the screw rod; 404. an adjusting member; 405. and (5) a pin.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Please refer to fig. 1-2 in detail, the present application provides a mixing device, which includes:

a mixing tank 100, wherein the mixing tank 100 comprises a mixing chamber 110, a mixing port 120 and a mixing port 130, wherein the mixing port 120 and the mixing port 130 are communicated with the mixing chamber 110;

the air charging unit 200 is communicated with the air mixing port 130, and is used for adding gas materials into the mixing chamber 110 through the air mixing port 130;

a packing unit 300, wherein the packing unit 300 is used for adding solid materials into the mixing chamber 110 through the mixing port 120;

the rotary mixing unit 400, the rotary mixing unit 400 is fixedly connected with the mixing tank 100, and is used for driving the mixing tank 100 to rotate so as to mix the solid material and the gas material in the mixing chamber 110.

According to the mixing device provided by the embodiment of the application, solid materials are respectively added through the mixing port 120 arranged on the mixing tank 100, and gas is added through the mixing port 130 arranged on the mixing tank 100, and the mixing tank 100 is driven to rotate through the rotary mixing unit 400, so that the solid materials and the gas materials can be fully mixed in the mixing chamber 110, and the mixing effect is improved; the lithium ion battery can be used for supplementing the anode when the mixing unit is applied to the lithium ion batteryDealkalizing the lithium material, mixing the lithium-rich compound material with carbon dioxide gas to make the high content residual alkali and CO on the surface of the lithium-rich compound material ₂ The reaction is carried out to generate high-purity lithium carbonate, so as to achieve the aim of reducing or completely eliminating residual alkali of lithium-rich compound materials and improve the performance and lithium supplementing effect of the battery.

It should be noted that, the mixing device in the embodiment of the present application may be applicable to a plurality of different scenes of mixing solids and gases, and the application is not limited to the types of solids and gases, and may be adjusted according to application scenes in different embodiments. In the embodiment of the present application, the mixing of the positive electrode lithium supplementing material and the gas material is taken as an example for illustration, wherein the solid material may be a lithium-rich compound, for example: lithium ferrite Li rich in lithium ₅ FeO ₄ Lithium nickel acid lithium Li ₂ NiO ₂ Manganese-rich lithium LiMnO, liMO, etc., the gas material may be CO ₂ 。

The high content of residual alkali and CO on the surface of the lithium-rich compound material in this example ₂ The lithium carbonate with high purity generated by the reaction is a substance required in the positive electrode slurry, the performance of the battery is improved, residual alkali on the surface of the lithium-rich compound material is converted into lithium carbonate through the positive electrode lithium-supplementing material dealkalizing treatment device, the lithium-supplementing effect can be further improved, and the technical requirement of lithium supplement of the polymer lithium battery is met.

As shown in fig. 3, the mixing tank 100 in the present application is made of a double-layer material, the mixing tank 100 includes an inner container 111 and an outer container 112 that are stacked, and the mixing chamber 110 is disposed inside the inner container 111; the inner layer of the mixing tank 100 is made of the high-strength material, so that the mixing tank is not easily affected by high air pressure and has the problem of breakage; the outer layer is a high-strength steel outer liner 112, which ensures the firmness, durability, safety and reliability of the mixing tank 100.

The mixing tank 100 is in an ellipsoidal shape, the mixing tank 100 comprises a top end 101 and a bottom end 102 which are arranged in the height direction, and the mixing port 120 and the mixing port 130 are arranged at the top end 101; in this embodiment, the mixing port 120 and the mixing port 130 may be located at two sides of the top end 101 of the mixing tank 100, that is, at two sides of the first axis L1 of the mixing tank 100 in the height direction, so that interference between the pipes of the mixing port 120 and the mixing port 130 may be prevented.

The mixing port 120 is used for filling lithium supplementing material powder into the mixing tank 100, the mixing tank 100 is threaded, the mixing port 120 penetrates through the inner container 111 and the outer container 112 of the mixing tank 100, the mixing port 170 is formed by extending out of the outer container 112 (5-10) cm of the mixing tank 100, the mixing port 120 is designed into a round hole, the diameter (10-15) cm of the round hole is designed, manual feeding can be facilitated, and the problems of material feeding falling and small amount of primary feeding are avoided.

It should be noted that, in this embodiment of the present application, the mixing port 120 and the mixing port 130 on the mixing tank 100 may also be designed at the bottom end 102 of the mixing tank 100, especially when the amount of the lithium supplement material to be processed is very large, the processing efficiency may be improved by greatly manufacturing the mixing tank 100, and at this time, the mixing port 120 of the mixing tank 100 is designed at the bottom end 102 of the mixing tank 100, which is more convenient for manual feeding than the design at the top end 101 of the mixing tank 100.

The mixing tank 100 is provided with a gas mixing pipe 140 corresponding to the gas mixing port 130, and the gas mixing pipe 140 is provided with a gas valve switch 150 for controlling the gas mixing port 130 to be opened or closed; the gas mixing pipe 140 is detachably provided with a gas mixing cover 160 which is in sealing connection with one end of the gas mixing pipe 140 away from the gas mixing port 130; and/or the mixing tank 100 is provided with a mixing seat 170 corresponding to the mixing opening 120, and the mixing seat 170 is detachably provided with a mixing cover 180 in sealing connection with the mixing seat 170.

In this application, the air valve switch 150 can control the opening or closing of the air mixing port 130 to control whether the air material is added into the mixing chamber 110, prevent the air material from leaking after the air material is added, and the like, and in addition, when the mixing tank 100 is vacuumized, the vacuumization process can be controlled as described below. Through mixing gas lid 160 and compounding jar 100 respectively with mixing gas pipe 140 and compounding seat 170 sealing connection, can prevent gas leakage etc. in the compounding jar 100 when compounding jar 100 is rotatory, improve the compounding effect.

In this embodiment, the air mixing pipe 140 is used for exhausting air (vacuumizing) and gas (carbon dioxide) in the mixing chamber 110, and the air mixing pipe 140 can be a conventional air pipe with a diameter of 8-12 mm. The mixing pipe 140 is connected with the outer container 112 of the mixing tank 100 through a mixing pipe 140 joint (not shown in the figure), and the mixing pipe 140 joint penetrates through the outer container 112 of the mixing tank 100 and the inner container 111 of the mixing tank 100 and is communicated with the mixing chamber 110. The air valve switch 150 of the mixing tank 100 is arranged on the mixing pipe 140, and is used for sealing and maintaining pressure after the mixing chamber 110 is filled with carbon dioxide gas with required content, so that the mixing tank 100 can ensure that the carbon dioxide gas in the mixing tank 100 is not leaked, the content is kept in the mixing tank 100 to carry out mixed reaction with lithium supplementing materials, the outermost end of the mixing pipe 140 is provided with the air mixing cover 160, the outermost end of the mixing pipe 140 is blocked, and the inside of the mixing pipe 140 is ensured not to be influenced by dust and foreign matters in the environment and be polluted.

As shown in fig. 4, in this embodiment, the mixing seat 170 is a portion of the threaded mixing port 120 of the mixing tank 100 extending out of the outer container 112 of the mixing tank 100, and the mixing seat 170 is internally provided with threads, so as to facilitate feeding. In addition, still be furnished with a compounding lid 180 on the compounding seat 170, compounding lid 180 contains inner circle 181 and sealing gasket 182, sealing gasket 182 installs on the inside top 101 of inner circle 181, and the inside side of inner circle 181 designs the screw thread, can seal the mode of screwing compounding lid 180 through the mode of screwing, guarantees that the inside of compounding jar 100 is isolated with external air, prevents that the interior of compounding jar 100 from admitting air leakage etc..

As shown in fig. 5, the packing unit 300 includes a shovel 30, the shovel 30 has a discharge port 301, the plane shape of the discharge port 301 is elliptical, a handle 302 is provided on the shovel 30, and the height of the shovel 30 decreases in a direction away from the handle 302.

Through the mode that the height direction of the material shovel 30 is gradually decreased, the material shovel 30 is in a steep downhill design, and the interior of the material shovel is hollow and is used for filling lithium supplementing material powder. The top surface of the shovel 30 is of an oval design, so that the front end of the shovel 30 is of a smaller size, and the shovel is convenient to be used for pouring lithium supplementing material powder into the threaded mixing seat 170 of the mixing tank 100, and enters the mixing chamber 110 through the mixing port 120. The shovel 30 is composed of a bag 303 in the shovel 30 and a handle 302 of the shovel 30, and the oval design of the top surface of the shovel 30 is that of the bag 303 in the shovel 30, and the top surface of the bag 303 in the shovel 30 is oval.

Illustratively, the plane ellipse of the shovel 30 has a long diameter (10-15) cm, a short diameter (5-10) cm, and the total height (5-10) cm of the pocket 303 in the shovel 30, and the length (15-20) cm of the handle 302 of the shovel 30. The size is convenient for manual handheld operation, and when the processing amount of the lithium supplementing material is not large according to the processing requirement, the gram number of the required lithium supplementing material can be filled once, so that the secondary or repeated charging operation by using the shovel 30 is avoided, the operation repeatability is reduced, and the working efficiency is improved.

In some embodiments, as shown in fig. 3, the mixing chamber 110 is provided with an abrasive 113 for assisting mixing, the abrasive 113 may be steel balls or zirconia, and the like, and the abrasive 113 may perform grinding effect while rotating and mixing the solid material and the gas material in the mixing tank 100, so as to improve the mixing effect.

In some possible embodiments of the present application, as shown in fig. 6, the mixing device further includes:

and a vacuum-pumping unit 500, wherein the vacuum-pumping unit 500 is communicated with the mixing port 130, and is used for vacuumizing the mixing chamber 110 through the mixing port 130 by the vacuum-pumping unit 500 before the gas material is added into the mixing chamber 110 through the gas-filling unit 200.

In this embodiment of the application, through setting up the evacuation unit 500 and can carrying out the evacuation to compounding jar 100, get rid of the air in the compounding jar 100, compounding jar 100 in this application is applicable to high vacuum, can guarantee the cleanness of compounding gas, does not receive the air influence, satisfies material handling's requirement.

It should be noted that in this embodiment of the present application, the mixing device may also be applied to other mixing scenes, where the mixing device is applied to other air-sensitive materials in the chemical field, such as insulating air treatment of sodium carbonate, for example, the processing device may be used to continuously pump/unload vacuum three times, so as to ensure cleanliness of gas filled in the inner container 111 of the mixing tank 100, and ensure that no air remains in the inner container 111 of the mixing tank 100 to improve vacuum degree. In addition, when the mixing device provided by the application is suitable for the application scene of high vacuum treatment, the vacuum pump 310 on the air charging unit 200 can use the combination pump of the screw pump and the Roots pump, and the digital display barometer 340 is arranged on the mixing tank 100, so that the mixing device can be applied to material treatment with high vacuum requirements under the condition of meeting the use condition of high vacuum.

In this embodiment, the vacuumizing unit 500 may share the same air mixing port 130 and the air mixing pipe 140 with the air charging unit 200, and may be inflated through the same air mixing port 130 after vacuumizing. When in setting, the air charging unit 200 and the vacuum pumping unit 500 are detachably connected with the air mixing port 130 through the three-way joint 190, wherein the air charging unit 200 comprises an air source bottle 210 and an air source pipeline 220 which is communicated with the air source bottle 210 and the three-way joint 190, and a pressure reducing valve 230 which is used for controlling the amount of gas materials added into the mixing chamber 110 is arranged on the air source pipeline 220; and/or the vacuumizing unit 500 comprises a vacuum pump 310 and a vacuum air pipe 320 communicated with the vacuum pump 310 and the three-way joint 190, and a vacuum valve 330 for controlling the vacuum degree in the mixing chamber 110 is arranged on the vacuum air pipe 320.

In the present application, the gas filling unit 200 is used to fill the mixing tank 100 with carbon dioxide gas. When the lithium ion battery charging device is used for charging, firstly, the mixing tank 100 filled with lithium ion materials is vertically placed in the vertical fixing mechanism 440 of the mixing tank 100, the top end 101 faces upwards, the bottom end 102 faces downwards, and stable and firm vertical placement of the mixing tank 100 is ensured. The mixing tank 100 is placed vertically, and one side with the gas mixing pipe 140 faces to a gas source bottle 210 inflated by the mixing tank 100. Second, the gas mixing cover 160 is removed, the outermost end of the gas mixing pipe 140 is connected with the three-way joint 190 of the mixing tank 100, the other two joints of the three-way joint 190 of the mixing tank 100 are respectively connected with the gas mixing pipe 140 and the vacuum gas pipe 320, the gas mixing pipe 140 additionally connected with the three-way joint 190 is connected with the pressure regulating valve 260 of the gas filling source bottle 210, a pressure reducing valve 230 is connected between the gas mixing pipe 140 and the pressure regulating valve 260 of the gas filling source bottle 210, and the pressure reducing valve 230 is provided with a high-pressure gauge 240 (measuring range: 0Mpa-25 Mpa) of the pressure reducing valve 230 and a low-pressure gauge 250 (measuring range: 0Mpa-2.5 Mpa) of the pressure reducing valve 230. The three-way joint 190 is connected with a vacuum air pipe 320, and is connected with a vacuum pump 310 (which can be one of an oil pump, a dry pump and a water pump or a combination pump of a screw pump and a Roots pump) through the vacuum air pipe 320. A digital display barometer 340 (measuring range-0.1-20 MPa) and a vacuum valve 330 are connected between the vacuum air pipe 320 and the vacuum pump 310, the digital display barometer 340 is arranged at the top end 101 of the side of the vacuum air pipe 320 close to the air mixing port 130, and the vacuum valve 330 is arranged at the bottom end 102 of the side of the vacuum air pipe 320 far from the air mixing port 130.

When the vacuum unit 500 performs vacuum pumping, the air valve switch 150 is turned on, the processing apparatus vacuum pump 310 is started, and the vacuum valve 330 is opened. The air in the mixing chamber 110 is carried away by means of a vacuum, as shown in fig. 3 by the flow direction a of the air when the vacuum is drawn. After the pointer of the digital display barometer 340 indicates-0.1 MPa, the air pressure is only-0.1 MPa, and at the moment, the vacuum pump 310 and the vacuum valve 330 of the processing device are closed.

Then, the gas mixture chamber is inflated by the inflation unit 200, specifically, the pressure regulating valve of the gas source bottle 210 is opened, and the carbon dioxide gas flows out from the gas source bottle 210, flows to the mixing chamber 110 through the gas mixing pipe 140 (the vacuum unloading/inflation gas flow direction B is shown in fig. 6), so that the purity of the carbon dioxide gas in the gas source bottle 210 is approximately 99.99%/99.999%. At this time, the pointer of the high-pressure gauge 240 of the pressure reducing valve 230 indicates that the pressure of the carbon dioxide gas in the inflation gas source bottle 210 is between 0Mpa and 10Mpa, and the pointer of the high-pressure gauge 240 of the pressure reducing valve 230 indicates that the value represents the pressure of the carbon dioxide gas in the inflation gas source bottle 210 and also indicates the content of the carbon dioxide gas in the inflation gas source bottle 210. The air pressure control knob of the pressure reducing valve 230 is adjusted, the pointer of the low pressure gauge 250 of the pressure reducing valve 230 is at 1Mpa, the carbon dioxide gas flows into the inner container 111 at the air pressure of 1Mpa, the pointer indication value of the digital display air pressure gauge 340 is observed, when the pointer of the digital display air pressure gauge 340 points to about 1Mpa, the pressure regulating valve of the inflation air source bottle 210 is closed first, then the air valve switch 150 is closed, the carbon dioxide gas with the air pressure of about 1Mpa is hermetically stored, and then the gas material is added into the mixing chamber 110.

In the embodiment of the present application, the rotary mixing unit 400 includes a base 410 and a rotary motor 420 disposed on the base 410, and a fixing mechanism 440 fixedly connected to the mixing tank 100 is disposed on an output shaft 430 of the rotary motor 420; the rotating motor 420 is configured to drive the mixing tank 100 to rotate around a first axis L1 or a second axis L2 after the air charging unit 200 and the vacuum pumping unit 500 are separated from the air mixing port 130, where the first axis L1 is perpendicular to the second axis L2; the first axis L1 is a center line of the mixing tank 100 along the height direction, and the second axis L2 is a center line perpendicular to the height direction.

In the method, the mixing tank 100 is adopted to rotate, so that the mixing of gas and powder is realized, the mixing effect is improved, the device belongs to low-speed rotating equipment, the use safety is ensured, and the risk factors to operators, materials and the device are low; the device has the advantages of simple integral structure, easy operation, low manufacturing cost and strong practicability.

In this embodiment, the rotation direction of the mixing tank 100 during mixing is not limited, the mixing tank 100 may rotate around a first axis L1 disposed along the height direction, that is, the mixing tank 100 may vertically rotate, and the mixing tank 100 may also rotate around a second axis L2 perpendicular to the height direction, that is, the mixing tank 100 may circumferentially rotate.

It should be noted that, in this embodiment of the present application, after the solid material is added, the vacuum is pumped, and the gas material is added, the mixing tank 100 is rotated, specifically, the gas mixing tube 140 at the top end 101 of the mixing tank 100 is detached from the three-way joint 190, and the gas mixing cover 160 is used to block the outermost end of the gas mixing tube 140, so that the gas mixing tube is removed from the gas filling unit 200. The three-way joint 190 is not connected with the air pipe joint by using the winding film, so that the inside of the three-way joint 190 and the inside of the air mixing pipe 140 and the vacuum air pipe 320 connected with the three-way joint 190 are not influenced by dust and foreign matters in the air and are polluted.

In addition, the balancing feet 411 of the four rotary mixing units 400 are installed under the base 410 of the rotary mixing unit 400, and the balance of the rotary mixing unit 400 can be adjusted by screwing, so that the rotary mixing unit 400 can be operated in a balanced state even on uneven ground. The bottom of the four balance feet 411 is made of PP high-density polypropylene, and is designed into a trapezoid, and the PP high-density polypropylene enables the four balance feet 411 to be difficult to deform and good in supporting force. The trapezoid design enables the four balance feet 411 to increase the contact area with the ground, and reduces the pressure intensity to the ground.

Example 1

As shown in fig. 7, the rotating motor 420 is configured to drive the mixing tank 100 to rotate around a first axis L1 after the air charging unit 200 and the vacuum pumping unit 500 are separated from the air mixing port 130, where the first axis L1 is a center line of the mixing tank 100 along a height direction.

The fixing mechanism 440 includes a first clamping portion 441 and a second clamping portion 442, which are fixedly connected to the mixing tank 100, the first clamping portion 441 is fixedly connected to the top end 101 of the mixing tank 100 and the output shaft 430, and the second clamping portion 442 is fixedly connected to the bottom end 102 of the mixing tank 100; the base 410 is provided with a rotating seat 443 rotatably connected to the second locking portion 442.

In this embodiment, the output shaft 430 of the rotating motor 420 is disposed along the height direction of the mixing tank 100, that is, the axis of the output shaft 430 is parallel to the first axis L1, the output shaft 430 can drive the first clamping portion 441 to rotate when rotating around the first axis L1, and the mixing tank 100 can be driven to rotate simultaneously through the fixed connection of the first clamping portion 441 and the top end 101 of the mixing tank 100. In order to improve the stability of rotation of the mixing tank 100, the second clamping portion 442 and the rotating seat 443 are provided at the bottom end 102 of the mixing tank 100, and the second clamping portion 442 is fixedly connected with the mixing tank 100 and the second clamping portion 442 is rotatably connected with the rotating seat 443, so that the mixing tank 100 drives the second clamping portion 442 to rotate on the rotating seat 443 when rotating.

The shape of first joint portion 441 and second joint portion 442 and the shape looks adaptation of compounding jar 100 in this application, the internal surface of first joint portion 441 and second joint portion 442 all can be half ellipse, conveniently drives compounding jar 100 and rotates, improves rotation stability.

The rotary motor 420 is fixedly arranged on the base 410 through a first supporting mechanism 470, the rotary motor 470 can extend to the height of the top end 101 of the mixing tank 100 through the first supporting mechanism 470, the first supporting mechanism 470 comprises a first supporting rod 471 and first stabilizing rods 472 arranged on two sides of the first supporting rod 471, and the top end 101 of the first supporting mechanism 470 is provided with a supporting seat 473 for fixing the rotary motor 420; in addition, the first clamping portion 441 is fixedly connected to the motor output shaft 430 through a first connecting member 445, the second clamping portion 442 is fixedly connected to the rotating shaft 444 on the rotating seat 443 through a second connecting member 446, and the rotating seat 443 can be fixedly disposed on the base 410. The first clamping portion 441 and the second clamping portion 442 are disposed opposite to each other along the height direction of the mixing tank 100, so that the mixing tank 100 can vertically rotate.

Example two

Referring to fig. 2 and 8, the rotating motor 420 is configured to rotate the mixing tank 100 around a second axis L2 after the air charging unit 200 and the vacuum pumping unit 500 are separated from the air mixing port 130, where the second axis L2 is perpendicular to the first axis L1, and the second axis L2 may be along a radial direction of the mixing tank 100.

In this embodiment, as shown in fig. 9, the fixing mechanism 440 includes a clamp 450 fixedly connected with the mixing tank 100, a clamping portion 451 partially surrounding the mixing tank 100 is provided on the clamp 450, an opening 452 for adjusting the clamping degree between the clamping portion 451 and the mixing tank 100 and a locking portion 453 for adjusting the size of the opening 452 are provided on the clamping portion 451, and a locking hole 454 matched with the locking portion 453 is provided on the clamping portion 451.

It should be noted that, in the embodiment of the present application, the structure of the locking portion 453 is not limited, and the locking portion 453 may be a bolt-nut structure to achieve the fixed connection between the two sides (the first clamping sub-portion 401 and the second clamping sub-portion 402) of the opening 452 by the clamping portion 451. For the convenience of manual screwing to fix the clamp 450 to fix the mixing tank 100, the locking portion 453 includes a locking screw 403 fixedly connected with the first clamping sub-portion 401, for example, the locking screw 403 passes through the locking hole 454 and then is fixedly connected with the first clamping sub-portion 401 through the pin 405, an adjusting member 404 is disposed on the locking screw 403, the adjusting member 404 is disposed on one side of the second clamping sub-portion 402, and by adjusting the position of the adjusting member 404 on the locking screw 403, the second clamping sub-portion 402 can be pressed to move in a direction close to the first clamping sub-portion 401, and then the size of the opening 452 between the first clamping sub-portion 401 and the second clamping sub-portion 402 is adjusted, so that the clamp 450 and the mixing tank 100 are locked.

The mixing tank 100 is provided with a groove 103 for installing the clamp 450, the groove 103 is annular, and the groove 103 is close to the central position of the mixing tank 100 along the height direction. In the application, the mixing tank 100 adopts a double-layer design, the middle position of the tank body of the mixing tank 100 is a clamping groove of the outer liner 112 of the mixing tank 100, and the clamping groove is designed for the groove 103 and used for fixing the mixing tank 100 on the rotary mixing unit 400 to perform mixing operation. The clamping groove of the outer container 112 of the mixing tank 100 is only designed on the outer container 112 of the mixing tank 100, and does not relate to the inner container 111 of the mixing tank 100.

The fixing mechanism 440 includes a clamping seat 461 disposed on the base 410 for placing the mixing tank 100, where the shape of the clamping seat 461 is adapted to the shape of the bottom end 102 of the mixing tank 100; the cartridge 461 in this application is of concave design, with the upper half being concave and the lower half being flat. The concave shape of the upper half part is matched with the arc shape of the bottom end 102 of the mixing tank 100, and the concave depth is large, so that the mixing tank 100 can be easily vertically placed in the vertical clamping seat 461 of the mixing tank 100 and stably installed, the mixing tank 100 is prevented from toppling over, shaking and the like, and the flat shape of the lower half part is conveniently fixed on the base 410.

The rotary mixing unit 400 further comprises a telescopic mechanism 460 arranged between the output shaft 430 and the clamp 450, wherein the telescopic mechanism 460 is used for driving the mixing pot 100 to be separated from the clamping seat 461 through the clamp 450. The telescopic mechanism 460 may be a hydraulic mechanism or a pneumatic mechanism, for example, the telescopic mechanism 460 includes a hydraulic cylinder and a hydraulic rod slidably disposed in the hydraulic cylinder, the hydraulic cylinder is fixedly connected to the output shaft 430, and the hydraulic rod is fixedly connected to the clamp 450.

The rotary mixing unit 400 is used for mixing carbon dioxide gas and lithium supplementing materials in the mixing tank 100 and reacting in the mixing chamber 110. The base 410 is provided with a second supporting mechanism 480, which is used for supporting the output shaft 430 of the rotating motor 420 to improve the motion stability, the second supporting mechanism 480 includes a second supporting rod 481 and second stabilizing rods 482 disposed on two sides of the second supporting rod 481, where the output shaft 430 of the rotating motor 420 in the rotating mixing unit 400 is disposed along the second axis L2, the output shaft 430 penetrates and extends out of the second supporting rod 481, and the extending portion is fixedly connected with the clamp 450. The inner side of the fixing clamp 450 of the mixing tank 100 is circular, and is matched with the clamping groove of the outer liner 112 of the mixing tank 100, so that the clamping groove of the outer liner 112 of the mixing tank 100 can be tightly attached.

The inflated mixing bowl 100 is mounted on the rotary mixing unit 400 by the following method: the mixing tank 100 is horizontally placed, the clamping groove of the outer liner 112 of the mixing tank 100 is clamped in the fixing clamp 450 of the mixing tank 100, and the size of the opening 452 is adjusted by the locking screw 403 and the nut, so that the mixing tank 100 is fixedly installed in the clamp 450. The thickened steel plate is selected for the rotary mixing unit 400 base 410 of the rotary mixing unit 400, so that the weight of the bottom of the rotary mixing unit 400 is increased, the overall stability of the rotary mixing unit 400 is improved when the mixing tank 100 rotates, and the use safety of the rotary mixing unit 400 is ensured.

In this embodiment, the rotary mixing unit 400 may manually set the rotary mixing parameters, and set the touch screen of the control box (not shown in the figure) through the rotary mixing unit 400. The rotary mixing unit 400 is started, the rotary motor 420 rotates according to the set rotary mixing parameters, and the clamp 450 is fixed on the output shaft 430 of the rotary motor 420 and the mixing tank 100 to drive the mixing tank 100 to rotate so as to realize the mixing of carbon dioxide gas and lithium supplementing materials.

Working parameters of the positive electrode lithium supplementing material dealkalizing treatment device are as follows: the mass ratio of the lithium supplementing material and the carbon dioxide gas filled into the liner 111 of the mixing tank 100 is 1:5-1:2. The pressure of the carbon dioxide gas filled in the inner container 111 of the mixing tank 100 is in the range of (0.5-5) Mpa. Operating parameters of the rotary compounding unit 400: the rotating speed is 200-800 r/min, and the time length is 2-5 h.

After the material mixing is rotated, the material mixing tank 100 is adjusted to be transverse, the screw 403 and the nut are locked by the fixing clamp 450 of the material mixing tank 100 are disassembled, the fixing clamp 450 of the material mixing tank 100 is loosened, and the material mixing tank 100 is removed; the mixing tank 100 is horizontally placed, the threaded mixing port 120 of the mixing tank 100 is upwards, the mixing cover 180 is unscrewed, the threaded mixing port 120 of the mixing tank 100 is downwards, the bottom end 102 of the mixing tank 100 is slightly lifted, the treated lithium supplementing material is gathered towards the position of the threaded mixing port 120 of the mixing tank 100, and the treated lithium supplementing material is poured out. After pouring out the treated lithium supplementing material, a ceramic small spoon can be used for scraping out the residual treated lithium supplementing material.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed.

Claims

1. A mixing device, comprising:

the rotary mixing unit is fixedly connected with the mixing tank and is used for driving the mixing tank to rotate so as to mix solid materials and gas materials in the mixing chamber;

2. The mixing device according to claim 1, wherein the mixing tank is provided with a gas mixing pipe corresponding to the gas mixing port, and the gas mixing pipe is provided with a gas valve switch for controlling the gas mixing port to be opened or closed; the gas mixing cover is detachably arranged on the gas mixing pipe and is in sealing connection with one end, far away from the gas mixing port, of the gas mixing pipe; and/or

3. The mixing device of claim 1, wherein the aeration unit and the evacuation unit are detachably connected to the mixing port via a three-way connection, wherein,

4. The mixing device according to claim 1, wherein the rotary mixing unit comprises a base and a rotary motor arranged on the base, and a fixing mechanism fixedly connected with the mixing tank is arranged on an output shaft of the rotary motor; the rotary motor is used for driving the mixing tank to rotate around a first axis or a second axis after the air charging unit, the vacuumizing unit and the mixing port are separated, and the first axis is perpendicular to the second axis;

5. A mixing device according to claim 4, wherein the fixing mechanism comprises a clamp fixedly connected with the mixing tank, a clamping part partially arranged around the mixing tank is arranged on the clamp, an opening for adjusting the clamping degree between the clamping part and the mixing tank and a locking part for adjusting the size of the opening are arranged on the clamping part, and a locking hole matched with the locking part is arranged on the clamping part;

6. The mixing device of claim 5, wherein the fixing mechanism comprises a clamping seat arranged on the base for placing the mixing tank, and the shape of the clamping seat is matched with the shape of the bottom end of the mixing tank;

7. The mixing device of claim 4, wherein the fixing mechanism comprises a first clamping part and a second clamping part which are fixedly connected with the mixing tank, the first clamping part is fixedly connected with the top end of the mixing tank and the output shaft, and the second clamping part is fixedly connected with the bottom end of the mixing tank;

8. A mixing device according to claim 1, wherein the filling unit comprises a shovel having a discharge opening with an oval planar shape, a handle being provided on the shovel, the shovel decreasing in height in a direction away from the handle.

9. The mixing device according to claim 1, wherein the mixing tank comprises a liner and an outer liner which are arranged in a stacked manner, and the mixing chamber is arranged inside the liner; an abrasive used for assisting mixing is arranged in the mixing chamber.