Powder-liquid mixing device and pulping system

Abstract

The utility model relates to a powder-liquid mixing device and a pulping system. A powder-liquid mixing device comprises a mixing module, the mixing module comprises a shell, the interior of the shell is divided into a feeding cavity and a mixing cavity, a powder feeding port is formed in the top wall face of the feeding cavity, a mixing inlet is formed in the side wall face of the feeding cavity, and a mixing outlet is formed in the side wall face of the mixing cavity; a main shaft is mounted in the shell in a matched manner, the end of the main shaft extends out of the shell and is connected with the output end of the mixing motor, a plurality of scattering blades and a mixing rotor are mounted on the outer circumferential surface of the main shaft in a matched manner, and the mixing rotor and the mixing stator are mounted in a matched manner. By arranging the mixing module 1, powder raw materials and liquid raw materials can be premixed, so that a premixing functional area and a dispersing functional area of the pulping system are mutually independent, next premixing can be performed after one-time premixing is completed, the production takt is compact, and the equipment utilization rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field especially a powder liquid mixing device and pulp system. BACKGROUND

[0002] Lithium battery pulp making is the process that active material, conductive agent and binder and other powder materials are uniformly dispersed into solvent according to the proportion by pulp making machine to form stable slurry.

[0003] The existing technology in the prior art usually adopts a mixing and dispersing integrated structure, that is, it has the functions of powder liquid mixing and slurry dispersing at the same time. This kind of pulp making machine can achieve good pulp making effect. However, during the pulp making process, after the powder material is dropped, the powder liquid mixing function is idle, resulting in low equipment utilization rate. At the same time, the heat generated by high-speed dispersion leads to the risk of over-temperature of the slurry, thereby affecting the quality of lithium slurry. SUMMARY

[0004] In view of the above-mentioned shortcomings of the existing production technology, the present application provides a powder liquid mixing device and pulp system. By setting a mixing module and a dispersing module, the slurry can be transferred to the dispersing module for dispersion after the powder raw material feeding is completed. The mixing module can feed the powder raw material of the next batch, thereby improving the equipment utilization rate and the production efficiency. At the same time, the heat generated during the pulp making process can be effectively reduced, thereby facilitating the regulation of the slurry temperature and ensuring the quality of the slurry.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A powder liquid mixing device comprises a mixing module, the mixing module comprises a shell, the inside of the shell is divided into a feeding cavity and a mixing cavity from top to bottom, the inside space of the feeding cavity and the inside space of the mixing cavity are in communication with each other, a powder feeding port for powder raw material feeding is formed on the top wall surface of the feeding cavity, a mixing inlet for liquid material feeding is formed on the side wall surface of the feeding cavity, and a mixing outlet for liquid material discharging is formed on the side wall surface of the mixing cavity.

[0007] A main shaft is installed in the inside of the shell, the end of the main shaft extends to the outside of the shell and is connected with the output end of a mixing motor, the main shaft is driven to rotate by the mixing motor, a plurality of scattering blades are installed on the outer circumferential surface of the main shaft in the feeding cavity, a mixing rotor is installed on the outer circumferential surface of the main shaft in the mixing cavity, and the mixing rotor is installed in cooperation with a mixing stator fixed in the mixing cavity.

[0008] The rotating main shaft drives the scattering blades to rotate, so that the powder raw material entering the inside of the shell through the powder feeding port is scattered by the scattering blades, and then the powder raw material is uniformly dropped into the liquid material entering the inside of the shell through the mixing inlet.

[0009] The rotating main shaft drives the mixing rotor to rotate relative to the mixing stator, thereby mixing and shearing the liquid material in the mixing cavity.

[0010] As a further improvement of the above technical solution:

[0011] The structure of the mixing rotor comprises an impeller.

[0012] The outer periphery of the impeller is fixed with at least one layer of concentrically and spacedly arranged first baffles, the single layer of first baffles is in a cylindrical shape, and a plurality of first notches are formed on the wall surface of the single layer of first baffles.

[0013] The single first notch is a straight notch or an inclined notch.

[0014] The structure of the mixing stator comprises at least one layer of second baffles, the single layer of second baffles is in a cylindrical shape, and a plurality of second notches are formed on the wall surface of the single layer of second baffles.

[0015] The single second notch is a straight notch or an inclined notch.

[0016] The housing further comprises a sealing cavity arranged below the mixing cavity, and the internal space of the sealing cavity is isolated from the internal space of the mixing cavity by a sealing assembly.

[0017] A pulping system comprises the powder-liquid mixing device, the mixing inlet of the powder-liquid mixing device is connected with the discharge port of a feeding container through a first pipe group, the feeding inlet of the feeding container is connected with the mixing outlet of the powder-liquid mixing device through a second pipe group, a connecting branch pipe group is installed on the second pipe group in cooperation, and the end of the connecting branch pipe group is connected with the feeding inlet of a dispersion module.

[0018] The internal space of the feeding container stores liquid raw materials, the liquid raw materials enter the powder-liquid mixing device through the first pipe group and the mixing inlet, the liquid raw materials are pre-mixed with powder raw materials in the powder-liquid mixing device to form liquid materials, and the liquid materials flow into the feeding container through the second pipe group until the powder raw materials are fed.

[0019] After the powder raw materials are fed, the liquid materials in the internal space of the feeding container and the liquid materials in the internal space of the powder-liquid mixing device enter the dispersion module through the second pipe group and the connecting branch pipe group in sequence, and the liquid materials are dispersed and mixed by the dispersion module.

[0020] As a further improvement of the above technical solution:

[0021] The structure of the dispersion module comprises a dispersion container, the discharge port of the dispersion container is connected with the feeding inlet of a dispersion host through a first dispersion pipe group, and the discharge port of the dispersion host is connected with the feeding inlet of the dispersion container through a second dispersion pipe group.

[0022] The liquid material in the dispersion container flows into the dispersion host through the first dispersion pipe group, is dispersed and mixed by the dispersion host, and then flows back to the dispersion container through the second dispersion pipe group.

[0023] The first tube group is cooperatively mounted with a rotor pump and a first cooler which are arranged at intervals.

[0024] The beneficial effects of the utility model are as follows:

[0025] The utility model has a compact and reasonable structure and is easy to operate. By setting a mixing module, powder raw materials and liquid raw materials can be premixed, so that the premixing function area and the dispersion function area of ​​the pulping system are independent of each other. After one premixing is completed, the next premixing can be carried out, thereby compacting the production rhythm and improving equipment utilization.

[0026] The utility model also has the following advantages:

[0027] (1) The utility model adopts an upper-in and lower-out material inlet and outlet method, which makes the flow field smoother, thereby improving the powder absorption capacity of the liquid material and improving the uniformity of the slurry; it can also reduce the impact on the internal sealing components of the powder-liquid mixing device, thereby extending the service life of the sealing components.

[0028] (2) In the present invention, the hybrid module is supported by a support base, which facilitates the placement of the hybrid motor below the housing, thereby achieving direct connection with the main shaft, improving torque transmission efficiency, and enabling a compact layout and reducing the size of the device.

[0029] (3) The present invention isolates the dispersion functional area from the mixing functional area to better match the production rhythm and improve efficiency; at the same time, it can also effectively reduce the heat generated during the pulping process, thereby facilitating the regulation of the pulp temperature and ensuring the pulp quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the powder-liquid mixing device in the utility model.

[0031] Figure 2 This is a partial enlargement of the hybrid module in this utility model. Figure 1 .

[0032] Figure 3 It is a top view of the mixing stator and mixing rotor in the present utility model.

[0033] Figure 4 This is a partial enlargement of the hybrid module in this utility model. Figure 2 .

[0034] Figure 5 This is a top view of another structural form of the hybrid stator and hybrid rotor in the present invention.

[0035] Figure 6 It is a structure schematic view of pulping system in the utility model.

[0036] Among them: 1, mixed module;2, feed container;3, rotor pump;4, support seat;5, dispersion module;6, powder feeding module;7, first cooler;8, second cooler;9, first pipe group;10, second pipe group;11, connecting branch pipe group;

[0037] 101, housing;102, feed cavity;103, mixing cavity;104, sealing cavity;105, mixing motor;106, main shaft;107, scattering blade;108, mixing inlet;109, mixing outlet;110, sealing assembly;111, first baffle;112, second baffle;113, first notch;114, second notch;115, impeller;

[0038] 501, dispersion container;502, dispersion host computer;503, first dispersion pipe group;504, second dispersion pipe group. DETAILED DESCRIPTION

[0039] The specific implementation of the utility model is described below in combination with the drawings.

[0040] The structure and function of the utility model are as follows:

[0041] For example, Figures 1-6As shown, the powder-liquid mixing device of the embodiment comprises a mixing module 1, the mixing module 1 comprises a shell 101, the inside of the shell 101 is sequentially separated into a feeding cavity 102 and a mixing cavity 103 from top to bottom, the internal space of the feeding cavity 102 and the internal space of the mixing cavity 103 are communicated with each other, a powder feeding port for powder raw material feeding is arranged on the top wall surface of the feeding cavity 102, a mixing inlet 108 for liquid material feeding is arranged on the side wall surface of the feeding cavity 102, and a mixing outlet 109 for liquid material discharging is arranged on the side wall surface of the mixing cavity 103; a main shaft 106 is fitted and installed in the inside of the shell 101, the end of the main shaft 106 extends to the outside of the shell 101 and is connected with the output end of a mixing motor 105, the main shaft 106 is driven to rotate by the mixing motor 105, a plurality of scattering blades 107 are fitted and installed on the outer circumferential surface of the main shaft 106 located in the inside of the feeding cavity 102, a mixing rotor is fitted and installed on the outer circumferential surface of the main shaft 106 located in the inside of the mixing cavity 103, and the mixing rotor is fitted and installed with a mixing stator fixed in the inside of the mixing cavity 103; the rotating main shaft 106 drives the scattering blades 107 to rotate, so that the powder raw material entering the inside of the shell 101 through the powder feeding port is scattered by the scattering blades 107, and then the powder raw material falls into the liquid material entering the inside of the shell 101 through the mixing inlet 108 uniformly; the rotating main shaft 106 drives the mixing rotor to rotate relative to the mixing stator, so that the liquid material in the inside of the mixing cavity 103 is mixed and sheared. By arranging the powder-liquid mixing device, the powder raw material and the liquid raw material can be premixed to form slurry; in the embodiment, the scattering blades 107 are obliquely fixed on the outer circumferential surface of the main shaft 106, so that the powder raw material can fall into the liquid material uniformly, thereby improving the mixing uniformity of the slurry; the mixing rotor and the mixing stator produce shearing mixing effect on the slurry, thereby further improving the mixing uniformity of the slurry.

[0042] The inside of the shell 101 is further provided with a sealing cavity 104, the sealing cavity 104 is arranged below the mixing cavity 103, and the internal space of the sealing cavity 104 and the internal space of the mixing cavity 103 are isolated by a sealing assembly 110.

[0043] The mixing outlet 109 is located below the mixing inlet 108, so that the powder-liquid mixing device adopts an up-in and down-out feeding and discharging mode, the flow field is smoother, thereby improving the powder eating capacity of the liquid material and the uniformity of the slurry; and the impact on the sealing assembly 110 in the inside of the powder-liquid mixing device is reduced, thereby prolonging the service life of the sealing assembly 110.

[0044] The liquid material referred to in the embodiment includes slurry and liquid raw material.

[0045] As shown in the figure, Figures 2-3 The structure of the mixing rotor comprises an impeller 115, and the periphery of the impeller 115 is free of baffle plates; or, as shown in the figure, Figures 4-5As shown, the periphery of the impeller 115 is fixed with at least one layer of concentrically spaced first baffles 111, and the single layer of first baffles 111 is in a cylindrical shape, and a plurality of first slots 113 are formed on the wall surface of the single layer of first baffles 111, and each first slot 113 is in a straight slot or an inclined slot.

[0046] The structure of the hybrid stator includes at least one layer of second baffles 112, and the single layer of second baffles 112 is in a cylindrical shape, and a plurality of second slots 114 are formed on the wall surface of the single layer of second baffles 112, and each second slot 114 is in a straight slot or an inclined slot. Figures 2-3 As shown, the hybrid stator includes one layer of second baffles 112, and the second slots 114 are in straight slots. Figures 4-5 As shown, the hybrid stator includes two layers of second baffles 112, and the two layers of second baffles 112 are concentrically spaced, and the first baffles 111 are located between the two layers of second baffles 112 and are concentrically spaced, and the second slots 114 are in straight slots, and the first slots 113 are in inclined slots.

[0047] The hybrid rotor and the hybrid stator of the embodiment have various structural forms, and can be selected according to the types of the slurry, thereby improving the use flexibility of the powder-liquid mixing device.

[0048] In addition, the bottom of the mixing module 1 is matched with a supporting seat 4, the mixing module 1 is supported by the supporting seat 4, the mixing motor 105 is arranged below the shell 101, thereby achieving the direct connection with the main shaft 106, the torque transmission efficiency can be improved, and the device can be compactly arranged, thereby reducing the device volume.

[0049] The embodiment also provides a pulping system, which comprises the powder-liquid mixing device, the mixing inlet 108 of the powder-liquid mixing device is connected with the discharge port of the feeding container 2 through the first pipe group 9, the feeding inlet of the feeding container 2 is connected with the mixing outlet 109 of the powder-liquid mixing device through the second pipe group 10, the second pipe group 10 is cooperatively installed with the connecting branch pipe group 11, and the end of the connecting branch pipe group 11 is connected with the feeding inlet of the dispersion module 5; the liquid raw material is stored in the feeding container 2, the liquid raw material enters the powder-liquid mixing device through the first pipe group 9 and the mixing inlet 108, the liquid raw material is premixed with the powder raw material in the powder-liquid mixing device to form a liquid material, the liquid material flows into the feeding container 2 through the second pipe group 10 until the powder raw material feeding is completed, and the liquid material in the feeding container 2 and the liquid material in the powder-liquid mixing device enter the dispersion module 5 through the second pipe group 10 and the connecting branch pipe group 11 in turn after the powder raw material feeding is completed, and the liquid material is dispersed and mixed in the dispersion module 5. By arranging the mixing module 1 and the dispersion module 5, the mixing module 1 is used for premixing the powder raw material and the liquid raw material, and the dispersion module 5 is used for further dispersing the slurry, so that the premixing function area and the dispersion function area are independent, the slurry can be transferred to the dispersion module 5 for dispersion after the powder raw material feeding is completed, the mixing module 1 can feed the next batch of powder raw material, the production rhythm is compacted, the equipment utilization rate is improved, and the production efficiency is improved; meanwhile, the premixing function area and the dispersion function area are arranged separately, and the heat generated in the pulping process can be effectively reduced, so that the slurry temperature is conveniently controlled, and the slurry quality is ensured.

[0050] The rotor pump 3 and the first cooler 7 are cooperatively installed on the first pipe group 9 and are arranged at intervals. By arranging the first cooler 7, the slurry can be accurately and stably controlled, so that the pulping quality is ensured, and the rotor pump 3 is used for driving the liquid material in the system to flow.

[0051] The structure of the dispersion module 5 is as follows: the dispersion container 501 is arranged, the discharge port of the dispersion container 501 is connected with the feeding inlet of the dispersion host 502 through the first dispersion pipe group 503, the discharge port of the dispersion host 502 is connected with the feeding inlet of the dispersion container 501 through the second dispersion pipe group 504, the liquid material in the dispersion container 501 flows into the dispersion host 502 through the first dispersion pipe group 503, and the liquid material is dispersed and mixed in the dispersion host 502 and then flows back to the dispersion container 501 through the second dispersion pipe group 504. The dispersion module 5 is used for cyclically dispersing the slurry.

[0052] The second dispersion pipe group 504 can be cooperatively installed with the connecting branch pipe group 11, so as to be connected with the feeding inlet of the dispersion container 501. The second cooler 8 is cooperatively installed on the second dispersion pipe group 504 and is used for cooling the cyclically flowing slurry.

[0053] The powder feeding module 6 is matched and installed at the powder feeding port of the powder-liquid mixing device, and can realize quantitative feeding and automatic production of the slurry system.

[0054] The working process of the utility model is as follows:

[0055] The liquid raw material is pre-stored in the feeding container 2, the rotor pump 3 is started, and the liquid raw material enters the inside of the shell 101 in sequence through the first pipe group 9 and the mixing inlet 108;

[0056] The powder raw material is delivered to the inside of the shell 101 through the powder feeding port of the powder feeding module 6, in the powder raw material feeding process, the mixing motor 105 drives the main shaft 106 to rotate, thereby driving the scattering blade 107 to scatter the powder raw material, so that the powder raw material falls into the liquid raw material in the inside of the shell 101 uniformly;

[0057] The rotating main shaft 106 drives the mixing rotor to rotate relative to the mixing stator, thereby mixing the liquid raw material and the powder raw material in the mixing cavity 103, forming slurry, and the slurry flows back to the feeding container 2 in sequence through the mixing outlet 109 and the second pipe group 10, so that the slurry circulates between the feeding container 2 and the shell 101, until the powder raw material feeding is completed;

[0058] Subsequently, under the action of the rotor pump 3, the slurry in the inside of the feeding container 2 enters the dispersion container 501 in sequence through the first pipe group 9, the mixing inlet 108, the feeding cavity 102, the mixing cavity 103, the mixing outlet 109, the second pipe group 10 and the connecting branch pipe group 11, to carry out circulation dispersion; after the slurry in the feeding container 2 is discharged, the mixing module 1 can carry out the next premixing;

[0059] The slurry in the dispersion container 501 enters the dispersion host 502 through the first dispersion pipe group 503, is dispersed through the dispersion host 502, and then flows back to the dispersion container 501 through the second dispersion pipe group 504, thereby realizing circulation between the dispersion container 501 and the dispersion host 502.

[0060] The above description is an explanation of the utility model, not a limitation of the utility model, the scope defined by the utility model is referred to the claims, and any form of modification can be made within the protection scope of the utility model.

Claims

1. A powder-liquid mixing device, characterized by: The mixing module (1) comprises a shell (101), the inside of the shell (101) is divided into a feeding cavity (102) and a mixing cavity (103) from top to bottom, the inside space of the feeding cavity (102) and the inside space of the mixing cavity (103) are communicated with each other, a powder feeding port for powder raw material feeding is arranged on the top wall surface of the feeding cavity (102), a mixing inlet (108) for liquid material feeding is arranged on the side wall surface of the feeding cavity (102), and a mixing outlet (109) for liquid material discharging is arranged on the side wall surface of the mixing cavity (103). A main shaft (106) is fitted and installed in the inside of the shell (101), the end of the main shaft (106) extends to the outside of the shell (101) and is connected with the output end of a mixing motor (105), the main shaft (106) is driven to rotate by the mixing motor (105), a plurality of scattering blades (107) are fitted and installed on the outer circumferential surface of the main shaft (106) in the feeding cavity (102), and a mixing rotor is fitted and installed on the outer circumferential surface of the main shaft (106) in the mixing cavity (103), the mixing rotor is fitted and installed with a mixing stator fixed in the mixing cavity (103). The rotating main shaft (106) drives the scattering blades (107) to rotate, so that the powder raw material entering the inside of the shell (101) through the powder feeding port is scattered by the scattering blades (107), and then the powder raw material is uniformly dropped into the liquid material entering the inside of the shell (101) through the mixing inlet (108). The rotating main shaft (106) drives the mixing rotor to rotate relative to the mixing stator, so that the liquid material in the mixing cavity (103) is mixed and sheared.

2. A powder liquid mixing device as claimed in claim 1, characterized in that: The structure of the mixing rotor comprises an impeller (115).

3. A powder liquid mixing device as claimed in claim 2, wherein: The outer periphery of the impeller (115) is fixed with at least one layer of concentrically and spacedly arranged first baffles (111), the single layer of first baffles (111) is in a cylindrical shape, and a plurality of first notches (113) are arranged on the wall surface of the single layer of first baffles (111).

4. A powder liquid mixing device as claimed in claim 3, characterized in that: The single first notch (113) is a straight notch or an inclined notch.

5. The powder liquid mixing device of claim 1, wherein: The structure of the mixing stator comprises at least one layer of second baffles (112), the single layer of second baffles (112) is in a cylindrical shape, and a plurality of second notches (114) are arranged on the wall surface of the single layer of second baffles (112).

6. A powder liquid mixing device as claimed in claim 5, wherein: The single second notch (114) is a straight notch or an inclined notch.

7. A powder liquid mixing device as claimed in claim 1, characterized in that: A sealing cavity (104) is further arranged in the inside of the shell (101), the sealing cavity (104) is arranged below the mixing cavity (103), and the inside space of the sealing cavity (104) and the inside space of the mixing cavity (103) are isolated by a sealing assembly (110).

8. A pulping system characterized by: The powder-liquid mixing device comprises a mixing inlet (108) connected with a discharge port of a feeding container (2) through a first pipe group (9), a mixing outlet (109) of the powder-liquid mixing device connected with a feeding inlet of the feeding container (2) through a second pipe group (10), and a connecting branch pipe group (11) fitted and arranged on the second pipe group (10) and connected with a feeding inlet of a dispersion module (5); The feeding container (2) stores liquid raw materials, which enter the powder-liquid mixing device through the first pipe group (9) and the mixing inlet (108), and are pre-mixed with powder raw materials to form liquid materials in the powder-liquid mixing device, and then flow into the feeding container (2) through the second pipe group (10) until the powder raw materials are fed completely; After the powder raw materials are fed completely, the liquid materials in the feeding container (2) and the powder-liquid mixing device flow into the dispersion module (5) through the second pipe group (10) and the connecting branch pipe group (11) in sequence, and are dispersed and mixed in the dispersion module (5).

9. A pulping system as claimed in claim 8, characterized in that The dispersion module (5) comprises a dispersion container (501), a feeding inlet of the dispersion container (501) connected with a discharge port of a dispersion host (502) through a first dispersion pipe group (503), and a feeding inlet of the dispersion host (502) connected with a discharge port of the dispersion container (501) through a second dispersion pipe group (504). The liquid materials in the dispersion container (501) flow into the dispersion host (502) through the first dispersion pipe group (503), are dispersed and mixed in the dispersion host (502), and then flow back into the dispersion container (501) through the second dispersion pipe group (504).

10. A pulping system as defined in claim 8, wherein: The first pipe group (9) is fitted and arranged with a rotor pump (3) and a first cooler (7) arranged at intervals.

Images