KR102626161B1 - Continuous mixing device and method for secondary batteries slurry - Google Patents

Abstract

The present invention is a continuous mixing device for slurry for secondary batteries, and in particular, includes a screw mixer for mixing slurry for secondary batteries, and a static mixer or high shear disperser provided in the screw mixer to selectively mix a binder solution or electrode slurry. This is a continuous mixing device and method for slurry for secondary batteries that can be produced.

Description

Continuous mixing device and method for slurry for secondary batteries {CONTINUOUS MIXING DEVICE AND METHOD FOR SECONDARY BATTERIES SLURRY}

The present invention is a continuous mixing device for slurry for secondary batteries, and in particular, includes a screw mixer for mixing slurry for secondary batteries, and a static mixer or high shear disperser provided in the screw mixer to selectively mix a binder solution or electrode slurry. This is a continuous mixing device and method for slurry for secondary batteries that can be produced.

In general, a secondary battery refers to a battery that can be reused by charging even after being discharged. These secondary batteries typically include electrodes (anode and cathode), and a separator is provided between these electrodes (i.e., anode and cathode) to prevent the anode and cathode from contacting each other.

These electrodes use an electrode slurry produced by mixing a positive electrode active material or a negative electrode active material and a binder solution, then dispersing and mixing in a solvent. To produce the electrode slurry, a mixer is used to mix the active material and the binder solution.

In addition, the binder solution is also produced by dispersing and mixing the binder raw materials in a solvent, and for this purpose, a mixer is used to mix the binder raw materials and the solvent.

Therefore, in the past, a mixer for making an electrode slurry and a mixer for making a binder solution had to be prepared separately, which caused a problem in that the manufacturing cost increased significantly.

Meanwhile, the above-mentioned mixer itself is widely known and is described in detail in the prior art literature below, so description and illustration thereof will be omitted.

Japan Registered Patent No. 6038557 Japan Registered Patent No. 4505086 Korean Registered Patent No. 10-2255530

The present invention is intended to solve the above-mentioned problems, and provides a screw mixer equipped with a static mixer or a high-shear disperser, or a pair or multiple pairs of the static mixer and the high-shear disperser to selectively produce a binder solution or electrode slurry. The purpose is to provide a continuous mixing device and method for slurry for secondary batteries that can reduce manufacturing costs.

However, the object of the present invention is not limited to the object mentioned above, and other object not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the present invention is a mixing device for producing a binder for secondary batteries by mixing binder raw materials with a solvent, comprising a screw mixer (MIXER) for mixing slurry for secondary batteries, and a screw mixer (MIXER) A continuous mixing device for secondary battery slurry capable of selectively producing a binder solution or electrode slurry is provided, including a static mixer 400 or a high shear disperser 500.

In the above, the screw mixer (MIXER) is equipped with a static mixer 400 and a high shear disperser 500 in one or multiple pairs.

In the above, the screw mixer (MIXER) includes a mixing unit 100 for transporting and primary mixing slurry raw materials, a barrel unit 200 for accommodating the mixing unit 100 therein, and the mixing unit ( 100) includes a shaft 110 rotated by a driving unit 180, a screw 120 formed on the outside of the shaft 110 to transport and mix the binder raw materials, and a screw 120 of the slurry raw materials among the shaft 110. It includes a rear support portion 130 disposed at the rear in the transport direction to support the shaft 110 to prevent the screw 120 from contacting the inner surface of the barrel portion 200.

In the above, the rear portion of the shaft 110 is exposed in the barrel portion 200, and the rear support portion 130 includes a rotation support portion 1310 provided on the exposed shaft 110, and the rotation support portion ( 1310 is accommodated inside and includes a support block 1320 installed on one side of the barrel 200, and the support block 1320 is fixed to the rear side of the barrel 200 and supports the shaft 110. ) includes a through block 1321 through which the penetrating block 1321 passes, and an insertion block 1322 installed on the through block 1321 and into which the penetrating shaft 110 is accommodated.

In the above, the through block 1321 includes a plate body 1321-1 in the shape of a plate, and a protrusion 1321-2 protruding from the plate body 1321-1, and the plate body 1321-1 ) is fixed to the rear side of the barrel 200, the protrusion 1321-2 protrudes from the plate body 1321-1, and the plate body 1321-1 and the protrusion 1321-2 A through hole 1321-3 is formed inside the shaft 110 and the rotation support portion 1310 are inserted and supported.

In the above, the insertion block 1322 has a block body 1322-1 in contact with the protrusion 1321-2 of the through block 1321, and a groove inside the block body 1322-1 to a specific depth. It includes an insertion groove 1322-2 in communication with the through hole 1321-3 of the through block 1321, and is disposed between the rotation support part 1310 and the barrel part 200 of the shaft 110 and the shaft ( 110), a sealing part 1340 is provided on the outer surface, the sealing part 1340 is seated inside the through hole 1321-3 of the through block 1321, and the rotation support part 1310 is inserted into the It is seated inside the groove 1322-2.

In the above, the screw 120 includes a first screw 121 for transporting the slurry raw material, and a second screw 122 formed behind the first screw 121 in the transport direction of the slurry raw material, The first screw 121 and the second screw 122 are formed to be spaced apart at a predetermined distance, and a rotation support portion 1310 of the rear support portion 130 is provided at the rear of the second screw 122, and the first screw 122 The spiral direction of (121) is formed in the rearward direction, and the spiral direction of the second screw 122 is formed in the opposite direction to prevent the binder raw material from being transferred in the direction of the rotation support unit 1310.

In the above, the pitch interval (distance between mountains or valleys) of the second screw 122 is greater than the pitch interval (distance between mountains or valleys) of the first screw 121. It is formed small.

In the above, the barrel unit 200 includes a sleeve 210 in which the shaft 110 of the mixing unit 100 is accommodated therein, and an external barrel 220 in which the sleeve 210 is accommodated therein. , the sleeve 210 has a specific cross-section, extends long in the longitudinal direction, is hollow, has an inner barrel body 2110 with both sides open, and an inner opening 2120 formed on one side of the inner barrel body 2110. It includes, and the outer barrel 220 is formed by sequentially arranging a plurality of outer barrel modules 220M, and the outer barrel module 220M is hollow and both sides are open to accommodate the sleeve 210 therein. It includes an outer barrel body 2210 and fixing flanges 2220 disposed on both sides of the outer barrel main body 2210 and having a plate shape, and an adjacent fixing flange 2220 of the outer barrel module 220M. The external barrel modules 220M are fixed to each other, and an external opening 2230 is formed in the external barrel body 2210 corresponding to the position where the internal opening 2120 of the sleeve 210 is formed.

In the above, the sleeve 210 further includes a packing 2250 surrounding the inner barrel body 2110, and the fixed flange 2220 of the outer barrel module 220M is a plate-shaped fixed flange body 2221. and a mounting groove 2222 formed on an outer side of the fixed flange body 2221, and an opening 2223 is formed in the center of the fixed flange body 2221 to form the outer barrel body 2210. It communicates with the internal hollow part 2211, and the mounting groove 2222 is formed around the opening 2223, and when the fixing flange 2220 is adjacent, the mounting groove 2222 abuts to form a specific The packing 2250 is inserted by forming a cross-sectional shape.

In the above, it is formed on one side of the outer barrel body 2210 and further includes a coolant inlet hole 2211 through which coolant enters and exits.

In addition, the present invention is a mixing method using the above-described continuous mixing device, which can selectively produce a binder solution or electrode slurry by connecting a static mixer 400 or a high shear disperser 500 to a screw mixer (MIXER). A continuous mixing method for slurry for car batteries is provided.

In the above, the screw mixer (MIXER) is provided with a static mixer 400 and a high shear disperser 500 in one pair or multiple pairs, and the static mixer 400 and the high shear disperser 500 are arranged sequentially or Or they are placed in the opposite order.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, terms or words used in this specification and claims should not be construed in their usual, dictionary meaning, and the inventor may appropriately define the concept of the term in order to explain his or her invention in the best way. It should be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it is.

According to the present invention described above, a binder solution or electrode slurry can be selectively produced, which has the effect of reducing manufacturing costs.

1 is a schematic diagram of a continuous mixing device according to an embodiment of the present invention;
2 is a schematic diagram of a mixing device according to an embodiment of the present invention;
Figure 3 is a partial enlarged perspective view of a mixing device according to an embodiment of the present invention;
Figures 4 and 5 are perspective views showing the front support portion of the mixing device according to an embodiment of the present invention separated;
Figure 6 is a perspective view showing the mixing part and the barrel part of the mixing device according to an embodiment of the present invention separated;
7 to 9 are partial cross-sectional perspective views and separated perspective views showing a cross section of the outer barrel of a mixing device according to an embodiment of the present invention;
Figure 10 is a cross-sectional perspective view and partially enlarged view of the outer barrel of a mixing device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

In addition, the examples below do not limit the scope of the present invention, but are merely illustrative of the elements presented in the claims of the present invention, and are included in the technical idea throughout the specification of the present invention and constitute the scope of the claims. Embodiments that include elements that can be replaced as equivalents may be included in the scope of the present invention.

As shown in FIG. 1, the continuous mixing device 10 according to an embodiment of the present invention includes a screw mixer (MIXER) for mixing slurry for secondary batteries, and a static mixer 400 provided in the screw mixer (MIXER). ) or a high shear disperser (500). This continuous mixing device 10 can selectively produce a binder solution or electrode slurry.

For example, in order to manufacture a binder solution, polymer powder, which is the binder raw material, and solvent must be uniformly mixed and dissolved. However, in order for the polymer powder to quickly dissolve in the solvent, the aggregated powder must be broken into small pieces to increase the total surface area, so a high shear disperser 500 is needed to provide time for the finely pulverized powder to dissolve in the solvent. A static mixer 400 is needed to provide this.

In addition, in order to produce an electrode slurry, the active material and the binder solution must be mixed, and unlike when producing a binder solution, the purpose of the electrode slurry is to evenly disperse the active material in the solution, so a high shear disperser 500 is required, and in this case, the binder solution A static mixer 400 can be placed for the purpose of further dissolving binder powder that has not yet been melted during the manufacturing stage.

As is widely known, the static mixer 400 refers to mixing by the flow of fluid without a separate driving unit. In the case of the present invention, the binder powder and solvent are first mixed in a screw mixer (MIXER). The mixed mixture is mixed secondarily in the static mixer 400 so that the powder is completely dissolved in the solvent. This static mixer 400 can use various configurations. As shown in FIG. 1, the static mixer 400 may include a hollow static mixer body 410 and a partition wall 420 formed inside the static mixer body 410 to impede the flow of fluid. The partition walls 420 are formed on both sides of the static mixer body 410 to increase the flow time, and this configuration increases the mixing time so that the binder powder is completely dissolved in the solvent.

The high shear disperser 500 may include a rotating plate 530 and a dispersion bar 520. This rotating plate 530 and distribution bar 520 are provided inside the case 510. The dispersion bars 520 are installed on the rotating plate 530 and are provided in plural numbers in the circumferential direction.

This distribution bar 520 is arranged in the horizontal direction and rotated by the rotation of the rotating plate 530. Centrifugal force (CF) is generated in the outer direction of the case 510 by rotation of the distribution bar 520. At this time, the binder solution and electrode slurry introduced through the inlet 511 of the case 510 are pressed radially outward from the inside of the case 510 by the centrifugal force (CF) and are in contact with the dispersion bar 520. mixed and further dispersed.

In particular, in the case of the present invention, since the dispersion bar 520 is arranged in the horizontal direction, it does not generate separate thrust and moves inside the case 510 by the discharge pressure generated from the screw mixer (MIXER). Therefore, even if the dispersion bar 520 rotates at high speed, no thrust is generated, so the moving speed inside the case 510 does not increase, and as a result, sufficient dispersion time can be secured to maximize the dispersion effect.

Meanwhile, the rotating plate 530 is rotated by the driving unit M, and the dispersion bar 520 may be rotated by the rotation of the rotating plate 530.

As described above, the slurry can be produced by connecting the static mixer 400 to the screw mixer (MIXER), or the high shear disperser 500 can be connected to the screw mixer (MIXER). That is, depending on the type of slurry to be produced as shown in FIG. 1(a), the static mixer 400 is connected to the screw mixer (MIXER) or connected to the screw mixer (MIXER) as shown in FIG. 1(b). The desired slurry can be produced by connecting a high shear disperser (500). According to the present invention, the same screw mixer (MIXER) can be used for various purposes, thereby reducing manufacturing costs.

In addition, as shown in FIG. 1(c), it is possible to equip the screw mixer (MIXER) with a static mixer 400 and a high shear disperser 500 as a pair, and as shown in FIG. 1(d) Likewise, it is possible to equip a screw mixer (MIXER) with multiple pairs of static mixers 400 and high-shear dispersers 500.

In addition, as shown in FIG. 1(e), it is possible to equip the screw mixer (MIXER) as a pair in the order of the high shear disperser 500 and the static mixer 400, and as shown in FIG. 1(f) As shown, it is also possible to equip the screw mixer (MIXER) with multiple pairs of high shear dispersers 500 and static mixers 400.

As shown in FIG. 2, the screw mixer (MIXER) may include a mixing unit 100 for transferring and primary mixing slurry raw materials, and a barrel unit 200 for accommodating the mixing unit 100 therein. there is. In this mixing unit 100, the binder solution or electrode slurry is first mixed, and more complete dispersion and mixing are achieved through the static mixer and high shear disperser described above.

This mixing unit 100 includes a shaft 110 rotated by a driving unit 180, a screw 120 formed outside the shaft 110 to transfer and mix the binder raw materials, and the shaft 110. It includes a rear support portion 130 that is disposed at the rear in the transport direction of the binder raw material and supports the shaft 110. Due to this rear support portion 130, the screw 120 does not contact the inner surface of the barrel portion 200.

That is, there is no risk of sagging occurring at the front of the shaft 110 (to the left in the drawing in FIG. 2) because it is driven by the drive unit 180, but to the rear of the shaft 110 (to the right in the drawing in FIG. 2). ) may cause sagging due to its own weight. When the shaft 110 sags, the screw comes into contact with the inside of the barrel, and in this case, the screw or barrel is damaged due to contact between the screw and the inside of the barrel, generating foreign matter. These foreign substances may ultimately be mixed into the secondary battery, deteriorating the quality of the secondary battery.

In order to eliminate these concerns, the present invention provides a rear support portion 130 at the rear of the shaft 110 to prevent sagging of the shaft 110, thereby preventing contact between the barrel and the screw and preventing the generation of foreign substances. It can be prevented. Through this action, the quality of the secondary battery can be improved by fundamentally preventing the incorporation of foreign substances.

As described above, the rear support portion 130 is provided at the rear of the shaft to prevent sagging of the shaft. To this end, as shown in FIGS. 3 to 5, a rear portion of the shaft 110 is exposed from the barrel portion 200. At this time, the rear support part 130 includes a rotation support part 1310 provided on the exposed shaft 110, and a support block in which the rotation support part 1310 is accommodated inside and installed on one side of the barrel part 200. Includes (1320). The rotation support unit 1310 may use a well-known bearing, and the rotation support unit 1310 may be installed on the support block 1320. That is, a bearing is used to prevent the rear of the shaft 110 from sagging, and the bearing is installed in the support block 1320.

This support block 1320 includes a through block 1321 and an insertion block 1322. The through block 1321 is fixed to the rear side of the barrel portion 200. The exposed shaft 110 penetrates the through block 1321. The insertion block 1322 is installed in the through block 1321, and the shaft 110 penetrating the through block 1321 is accommodated inside the insertion block 1322. At this time, the rotation support part 1310 provided on the shaft 110 is provided on the insertion block 1322 to rotatably support the shaft 110.

This through block 1321 includes a plate-shaped plate body 1321-1 and a protrusion 1321-2 protruding from the plate body 1321-1. At this time, the plate body portion 1321-1 is fixed to the rear side of the barrel portion 200. For this purpose, a plurality of fixing holes (1321-1a) are formed in the plate body portion (1321-1), and a fixture (not shown) is placed at the rear of the barrel portion (200) after penetrating the fixing holes (1321-1a). It can be fixed.

The protrusion 1321-2 protrudes from the plate body 1321-1. This protrusion 1321-2 may have a cylindrical shape as shown, and a through hole 1321-3 is formed inside the plate body 1321-1 and the protrusion 1321-2. In the illustrated embodiment, since the shafts 110 are provided as a pair, the through holes 1321-3 are also formed as a pair. The shaft 110 and the rotation support portion 1310 are inserted and supported in this through hole 1321-3.

The insertion block 1322 has a block body 1322-1 in contact with the protrusion 1321-2 of the through block 1321, a groove inside the block body 1322-1 to a certain depth, and the through block ( It includes an insertion groove (1322-2) that communicates with the through hole (1321-3) of 1321).

At this time, a sealing part 1340 is disposed between the rotation support part 1310 and the barrel part 200 of the shaft 110 and is provided on the outer surface of the shaft 110. The binder mixed inside the barrel portion 200 by the sealing portion 1340 penetrates toward the rotation support portion 1310, thereby preventing damage to the rotation support portion 1310. For this purpose, the sealing part 1340 can use a widely known O-Ring or the like.

This sealing portion 1340 may be seated inside the through hole 1321-3 of the through block 1321, and the rotation support portion 1310 may be seated inside the insertion groove 1322-2.

The shaft 110 is supported by the rear support portion 130 as described above, and the screw 120 is provided on the shaft 110. As shown in FIG. 6, the screw 120 includes a first screw 121 for transporting the binder raw material, and a second screw 122 formed behind the first screw 121 in the transport direction of the binder raw material. It can be included. In the case of the embodiment shown in FIG. 6, the second screw 122 may be formed on the right side of the first screw 121 in the drawing. The first screw 121 and the second screw 122 are formed to be spaced apart at a certain interval, and the rotation support part 1310 of the rear support part 130 is located behind the second screw 122, that is, in the right direction in the drawing. It is provided.

The spiral direction of the first screw 121 is formed in a backward direction, so that when the first screw 121 rotates, the binder raw material is transferred in the backward direction. However, the spiral direction of the second screw 122 is formed in the opposite direction to prevent the binder raw material from being transferred in the direction of the rotation support unit 1310. With this configuration, it is possible to prevent binder raw materials from penetrating into the rotation support unit 1310 and causing damage to the rotation support unit 1310.

It is preferable that the pitch interval of the second screw 122 is smaller than that of the first screw 121. At this time, the pitch interval may be defined as the distance between mountains or the distance between valleys. If the pitch interval of the second screw 122 is made smaller than the pitch interval of the first screw 121, the pressure pushing the slurry can be increased. That is, the slurry is transferred by the first screw 121 to the rotation support unit 1310 using a bearing, etc. At this time, by reducing the pitch interval of the second screw 122 and increasing the pressure pushing the slurry, the inflow of the slurry by the first screw 121 can be prevented.

The above-described shaft 110 can be rotated by the driving unit 180. This driving unit 180 can use a widely known electric motor, and since this configuration is widely known, detailed description and illustration will be omitted.

As described above, the rear of the shaft 110 is supported by the rear support portion 130 to prevent sagging. The front of the shaft 110 is linked to the driving unit 180 and may be supported by the front support unit 300 as shown in FIGS. 3 and 7. The front support unit 300 may include a front support body 310 having a hollow shape and a front rotation support unit 320 provided inside the front support body 310. One side of the front support body 310 is fixed to the fixing flange 2220 of the outer barrel 200. A shaft 110 is provided inside the front support body 310, penetrates the front support body 310 and the fixing flange 2220, and is then inserted into the inner barrel provided inside the outer barrel body 2210. The front rotation support 320 may use a widely known bearing, etc., and the front rotation support 320 is disposed inside the front support body 310 and provided around the shaft 110 to support the shaft 110. Supports so that it can rotate.

The mixing unit including the shaft and screw described above is provided inside the barrel unit. This barrel portion includes a sleeve 210 and an outer barrel 220 as shown in FIGS. 6 to 10. The sleeve 210 accommodates the shaft 110 of the mixing unit 100 and the screw 120 formed on the outside of the shaft 110. The outer barrel 220 accommodates the sleeve 210 therein.

The sleeve 210 has a specific cross-section, extends long in the longitudinal direction, and may include an internal barrel body 2110 that is hollow and has both sides open. A shaft 110 is inserted into this inner barrel body 2110. An internal opening 2120 is formed on one side of the internal barrel body 2110.

The outer barrel 220 is formed by sequentially arranging a plurality of outer barrel modules 220M. This external barrel module 220M includes an external barrel body 2210 and a fixed flange 2220. The outer barrel body 2210 is hollow and both sides are open to accommodate the sleeve 210 therein. The fixing flanges 2220 are disposed on both sides of the outer barrel body 2210 and have a plate shape. A plurality of shaped external barrel modules 220M are arranged adjacent to each other. Therefore, the fixing flanges 2220 come into contact with each other and are then fixed to each other, thereby fixing the entire external barrel modules 220M to each other.

Meanwhile, a coolant inlet hole 2211 through which coolant enters and exits is formed in the outer barrel body 2210. Coolant can be introduced through the coolant inlet/outlet hole 2211 to control the temperature inside the barrel 200. The coolant inlet and outlet holes 2211 are provided in pairs so that coolant can be introduced and discharged.

As described above, an internal opening 2120 is formed in the sleeve 210, and an external opening 2230 is formed in the external barrel body 2210 corresponding to the position where the internal opening 2120 is formed to communicate with each other. do.

As described above, the internal opening 2120 and the external opening 2230 are formed to introduce raw material powder for a binder, electrode, or separator into the mixing unit 100.

At this time, the inner barrel body 2110 and the outer barrel body 2210 corresponding to the spaced apart portion ('A' in FIG. 6) between the first screw 121 and the second screw 122 of the mixing unit 100. ) An internal discharge opening 2130 and an external discharge opening 2240 may be formed.

That is, the internal opening 2120 and the external opening 2230 are for introducing raw materials into the barrel 200, and the internal discharge opening 2130 and the external discharge opening 2240 are for mixing the raw materials. It is for discharging raw materials to the outside.

As described above, the internal discharge opening 2130 and the external discharge opening 2240 are internal parts corresponding to the spaced apart portion ('A' in FIG. 6) between the first screw 121 and the second screw 122. It is formed in the barrel body 2110 and the outer barrel body 2210, and the above-described first screw 121 and second screw 122 are disposed inside the sleeve 210 and the outer barrel 220. At this time, a portion of the shaft 110 is exposed from the sleeve 210 and the outer barrel 220, and the sealing portion 1340 and the rotation support portion 1310 are mounted thereon. The sealing part 1340 and the rotation support part 1310 are seated on the support block 1320 of the rear support part 130. That is, the sealing part 1340 is seated on the through block 1321 of the support block 1320, and the rotation support part 1310 is seated on the insertion block 1322.

As described above, the sleeve 210 is disposed inside the outer barrel 220, and the outer barrel 220 has a plurality of outer barrel modules 220M sequentially disposed. In order to stably fix the outer barrel module 220M and the sleeve 210 to each other, the sleeve 210 may include packing 2250 surrounding the inner barrel body 2110. The packing 2250 can use a widely known O-ring.

In addition, the fixing flange 2220 of the external barrel module 220M may include a plate-shaped fixing flange body 2221 and a mounting groove 2222 formed on the outer side of the fixing flange body 2221. there is. An open portion 2223 is formed in the center of the fixed flange body 2221 and communicates with the hollow portion inside the external barrel body 2210. At this time, the mounting groove 2222 is formed around the opening portion 2223.

Since this mounting groove 2222 is formed in the fixing flange 2220, when the fixing flange 2220 is adjacent, the mounting groove 2222 abuts to form a specific cross-sectional shape.

The packing 2250 is inserted into the mounting groove 2222, so that the sleeve 210 and the outer barrel 220 are stably fixed to each other.

Hereinafter, a mixing method using the previously described continuous mixing device 10 will be described with reference to FIG. 1 .

First, the binder solution or electrode slurry can be selectively produced by connecting the static mixer 400 or the high shear disperser 500 to the screw mixer (MIXER). At this time, depending on the type of slurry to be produced as shown in FIG. 1(a), the static mixer 400 is connected to the screw mixer (MIXER) or connected to the screw mixer (MIXER) as shown in FIG. 1(b). The desired slurry can be produced by connecting a high shear disperser (500).

At this time, the screw mixer (MIXER) may be equipped with a static mixer 400 and a high shear disperser 500 in one pair or multiple pairs. That is, as shown in FIG. 1(c), it is possible to equip the screw mixer (MIXER) with a static mixer 400 and a high shear disperser 500 as a pair, and as shown in FIG. 1(d) Likewise, it is possible to equip a screw mixer (MIXER) with multiple pairs of static mixers 400 and high-shear dispersers 500.

In addition, as shown in FIG. 1(e), it is possible to equip the screw mixer (MIXER) as a pair in the order of the high shear disperser 500 and the static mixer 400, and as shown in FIG. 1(f) As shown, it is also possible to equip the screw mixer (MIXER) with multiple pairs of high shear dispersers 500 and static mixers 400.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

100: mixing unit 110: shaft
120: screw 121: first screw
122: second screw 130: rear support
1310: rotation support 1320: support block
1321: Penetrating block 1322: Insertion block
1340: sealing part 180: driving part
200: barrel part 210: inner barrel
2110: Inner barrel body 2120: Opening part
2130: Fixed ring 220: External barrel
2210: External barrel body 2220: Fixed flange
2230: Opening portion 300: Front support portion
310: front support main body 320: front rotation support
400: Static mixer

Claims (9)

Selectively produces a binder solution or electrode slurry, including a screw mixer (MIXER) for mixing slurry for secondary batteries, and a static mixer (400) or high shear disperser (500) provided in the screw mixer (MIXER).
The screw mixer (MIXER) includes a mixing unit 100 for transferring and primary mixing slurry raw materials, and a barrel unit 200 for accommodating the mixing unit 100 therein,
The mixing unit 100 includes a shaft 110 rotated by a driving unit 180, a screw 120 formed outside the shaft 110 to transfer and mix the binder raw materials, and the shaft 110. It includes a rear support portion 130 disposed at the rear in the transport direction of the heavy slurry raw material and supporting the shaft 110,
A rear portion of the shaft 110 is exposed in the barrel portion 200,
The rear support portion 130 includes a rotation support portion 1310 provided on the exposed shaft 110, and a support block 1320 in which the rotation support portion 1310 is accommodated and installed on one side of the barrel portion 200. ), including
The support block 1320 is fixed to the rear side of the barrel 200 and includes a through block 1321 through which the shaft 110 passes, and a shaft 110 installed on the through block 1321 and through the shaft 110. includes an insertion block 1322 received therein;
The through block 1321 includes a plate-shaped plate body 1321-1 and a protrusion 1321-2 protruding from the plate body 1321-1,
The plate body 1321-1 is fixed to the rear side of the barrel 200, and the protrusion 1321-2 protrudes from the plate body 1321-1, and the plate body 1321-1 A continuous mixing device for slurry for secondary batteries in which a through hole (1321-3) is formed inside the protrusion (1321-2) and the shaft (110) and the rotation support portion (1310) are inserted and supported. According to paragraph 1,
A continuous mixing device for slurry for secondary batteries in which the screw mixer (MIXER) is equipped with a static mixer (400) and a high-shear disperser (500) in one or multiple pairs. delete delete delete According to paragraph 1,
The insertion block 1322 has a block body 1322-1 in contact with the protrusion 1321-2 of the through block 1321, a groove inside the block body 1322-1 to a certain depth, and the through block ( It includes an insertion groove (1322-2) that communicates with the through hole (1321-3) of 1321,
A sealing part 1340 is disposed between the rotation support part 1310 and the barrel part 200 of the shaft 110 and is provided on the outer surface of the shaft 110,
The sealing portion 1340 is seated inside the through hole 1321-3 of the through block 1321,
The rotation support unit 1310 is a continuous mixing device for slurry for secondary batteries, wherein the rotation support unit 1310 is seated inside the insertion groove 1322-2. According to paragraph 1,
The screw 120 includes a first screw 121 for transporting the slurry raw material, and a second screw 122 formed behind the first screw 121 in the transport direction of the slurry raw material,
The first screw 121 and the second screw 122 are formed to be spaced apart from each other at a predetermined interval, and a rotation support portion 1310 of the rear support portion 130 is provided at the rear of the second screw 122,
The spiral direction of the first screw 121 is formed in the rear direction, and the spiral direction of the second screw 122 is formed in the opposite direction to prevent the binder raw material from being transferred in the direction of the rotating support unit 1310. Continuous mixing device for slurries. In clause 7,
A continuous mixing device for slurry for secondary batteries, wherein the pitch interval of the second screw (122) is smaller than the pitch interval of the first screw (121). According to paragraph 1,
The barrel unit 200 includes a sleeve 210 in which the shaft 110 of the mixing unit 100 is accommodated, and an external barrel 220 in which the sleeve 210 is accommodated,
The sleeve 210 has a specific cross-section, extends long in the longitudinal direction, has a hollow shape, and includes an inner barrel body 2110 with both sides open, and an inner opening 2120 formed on one side of the inner barrel body 2110. Contains,
The outer barrel 220 is formed by sequentially arranging a plurality of outer barrel modules 220M,
The outer barrel module 220M includes an outer barrel body 2210 that is hollow and open on both sides to accommodate the sleeve 210 therein, and a plate-shaped fixing flange disposed on both sides of the outer barrel body 2210. Contains (2220),
Adjacent fixing flanges 2220 of the external barrel module 220M are fixed to each other, so that the external barrel module 220M is fixed to each other,
A continuous mixing device for slurry for secondary batteries in which an external opening 2230 is formed in the external barrel body 2210 corresponding to the position where the internal opening 2120 of the sleeve 210 is formed.

Images