CN209813061U

CN209813061U - Wet process diaphragm extraction system and edge clamping roller device thereof

Info

Publication number: CN209813061U
Application number: CN201920401955.6U
Authority: CN
Inventors: 王娟; 魏建峰; 王杰; 王佳; 洪珍斌; 孟国栋
Original assignee: Anhui New Heng New Mstar Technology Ltd
Current assignee: Anhui Jinli New Energy Co ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2019-12-20
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses a wet process diaphragm extraction system and double-layered limit roller device thereof belongs to lithium cell diaphragm extraction technical field. The utility model discloses a limit roller device is pressed from both sides to wet process diaphragm extraction system, including installing in the limit roller and the limit roller lift adjustment mechanism of pressing from both sides of extraction inslot, this lift adjustment mechanism includes big lead screw and screw nut, big lead screw install in the inner wall of extraction groove, screw nut suit on big lead screw, and press from both sides the limit roller and link to each other with screw nut is fixed. Adopt the technical scheme of the utility model, can realize that simultaneous control presss from both sides the limit roller and control and reciprocate to solve the problem that the limit roller easily frosted at the extraction in-process, be favorable to improving the membrane face state and the diaphragm performance of diaphragm.

Description

Wet process diaphragm extraction system and edge clamping roller device thereof

Technical Field

The utility model belongs to the technical field of lithium battery diaphragm extraction, more specifically say, relate to a wet process diaphragm extraction system and double-layered limit roller device thereof.

Background

In recent years, the lithium ion battery technology has been developed rapidly, and the performance of the lithium ion battery is directly determined by the diaphragm as one of the core materials in the battery, so that the diaphragm material and the preparation technology thereof are urgently needed to be studied deeply. The wet biaxially oriented polyethylene separator is widely used due to its excellent thickness (5-30 μm), microporous structure, good wettability to electrolyte, and excellent mechanical properties. The production principle of the wet diaphragm is as follows: mixing a high molecular polymer and a small molecular high-boiling point diluent, performing homogeneous extrusion casting at high temperature, cooling by a casting sheet, performing molecular chain stretching in a longitudinal stretching stage and a transverse stretching stage, and finally extracting the diluent by using a low-boiling point extracting agent to finally obtain the polymer microporous membrane.

The production process of the wet diaphragm is continuous production, the diaphragm surface needs to be kept flat all the time and can stably and flatly pass through a production system, so that the flatness of the diaphragm surface needs to be controlled by using an edge clamping roller device in the diaphragm production process. The edge clamping roller device can ensure that the film keeps certain tension in the width direction in the extraction system, so that the film surface is ensured to be stably extended and edge clamping fluctuation is reduced in the extraction process. However, the existing edge roller device can only adjust and control the edge roller to move left and right through the screw rod, and because the edge roller device is located below the extraction liquid level for a long time, the edge roller device is easy to frost in an extraction liquid environment with low temperature, so that foreign matters are formed on the film surface, and the foreign matters become factors which cause mechanical scratches and the like and influence the appearance performance and the physical performance of the film surface.

Through retrieval, the Chinese patent application number: 201720039233.1, filing date: in 2017, 13.01 month, the invention and creation name is: a walk roller device for controlling walk membrane off tracking after wet process diaphragm extraction, this application discloses a walk roller device for controlling walk membrane off tracking after wet process diaphragm extraction, including a plurality of rollers that are located the extraction tank and a plurality of rollers that are located extraction tank upper portion, it has two-layer corrosion-resistant sticky tape to paste in succession on the surface to be located two adjacent rollers of extraction tank export top at least, the main effect of the corrosion-resistant sticky tape of pasting is the equilibrium point that shifts about the change membrane, establish new stable equilibrium point, when not controlling environment humiture, reduce the freezing volume on roller surface, prevent the off tracking of diaphragm. However, this application does not completely solve the problem of frosting of the roller during extraction, and in particular, cannot be used to effectively prevent frosting of the edge rollers in the extraction tank.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

To the long-term submergence of current double-layered limit roller device in the extraction liquid, the problem of frosting easily takes place, the utility model provides a wet process diaphragm extraction system and double-layered limit roller device thereof. Adopt the technical scheme of the utility model, can realize that simultaneous control presss from both sides the limit roller and control and reciprocate to solve the problem that the limit roller easily frosted at the extraction in-process, be favorable to improving the membrane face state and the diaphragm performance of diaphragm.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model discloses a limit roller device is pressed from both sides to wet process diaphragm extraction system, including installing in the limit roller and the limit roller lift adjustment mechanism of pressing from both sides of extraction inslot, this lift adjustment mechanism includes big lead screw and screw nut, big lead screw install in the inner wall of extraction groove, screw nut suit on big lead screw, and press from both sides the limit roller and link to each other with screw nut is fixed.

Furthermore, the upper end and the lower end of the big screw rod are arranged on the first fixed support and the second fixed support on the inner wall of the extraction tank through rotating bearings.

Furthermore, the screw nut is fixedly connected with the first air pipe and the second air pipe, and the edge clamping roller is fixedly connected with the fixing frames arranged on the first air pipe and the second air pipe.

Furthermore, the upper row of rollers of the edge clamping rollers are fixedly connected with the fixed frame, and the lower row of rollers of the edge clamping rollers are fixedly connected with the fixed frame through the supporting rods.

Furthermore, the first air pipe is made of PU material, and the second air pipe is made of stainless steel material.

Furthermore, the device also comprises a horizontal adjusting mechanism of the edge clamping roller, wherein the horizontal adjusting mechanism comprises a small screw rod and a transmission screw rod, the small screw rod is vertically arranged inside the extraction tank, the transmission screw rod is in transmission connection with the small screw rod through a bevel gear, and the fixing frame is in threaded connection with the transmission screw rod.

Furthermore, the fixing frame is provided with a light hole matched with the first air pipe and the second air pipe, and the large screw rod and the small screw rod are respectively provided with a first hand rocker and a second hand rocker.

Furthermore, the upper part of the small screw rod is arranged on the first fixing support, the lower part of the small screw rod is sleeved with a first bevel gear, and the end part of the transmission screw rod is provided with a second bevel gear meshed with the first bevel gear.

The utility model discloses a wet process diaphragm extraction system, including the extraction tank, be equipped with in the extraction tank the double-layered limit roller device.

Furthermore, two inner walls of the extraction tank are provided with two edge clamping roller devices which are symmetrically distributed.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a limit roller device of wet process diaphragm extraction system, including limit roller lifting adjusting mechanism, can adjust the height of the limit roller in the extraction tank through the setting of lifting adjusting mechanism, thereby effectively prevent to produce the frosting because the limit roller submerges in the extract for a long time, and then help to improve the membrane face state and the diaphragm performance of diaphragm;

(2) the utility model discloses a double-layered limit roller device of wet process diaphragm extraction system, the elevating system include big lead screw and screw nut, rotate through driving big lead screw, make screw nut reciprocate along big lead screw to can drive the double-layered limit roller and reciprocate, and the elevating system simple structure, convenient operation;

(3) the utility model discloses a limit roller device of wet process diaphragm extraction system, first trachea and second trachea are located the extraction liquid level respectively above and below, therefore first trachea adopts the PU material to make, and the second trachea is stainless steel material, thereby can prevent that the second trachea from receiving the extract corruption, has effectively prolonged limit roller device's life;

(4) the utility model discloses a limit roller device is pressed from both sides to wet process diaphragm extraction system can adjust the horizontal position of limit roller through the setting of limit roller horizontal adjustment mechanism. Specifically, the small screw rod is driven to rotate to drive the transmission screw rod to rotate, so that the edge clamping roller can synchronously and horizontally move along with the fixed frame.

(5) The utility model discloses a double-layered limit roller device of wet process diaphragm extraction system, when adopting the lift adjustment mechanism to adjust the height of double-layered limit roller, the transmission lead screw can follow screw nut and reciprocate together, because the screw thread effect between transmission lead screw and the mount can effectively prevent the mount from taking place and rocking from side to side when adjusting from top to bottom simultaneously; when the horizontal adjusting mechanism is used for adjusting the edge clamping roller left and right, the lifting adjusting mechanism stops working, the first air pipe and the second air pipe can be used as guide rails for left and right movement of the fixing frame, and the fixing frame is prevented from rotating along with the transmission screw rod.

(6) The utility model discloses a wet process diaphragm extraction system, two relative inner walls of extraction tank all are equipped with two contained side roller devices of symmetric distribution to on the one hand can carry out about the different contained side rollers in the extraction tank respectively or level (l) ing, on the other hand still is favorable to the structural stability who improves the device, and each other does not influence between the lift of contained side roller and the level (l) ing.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. an extraction tank; 2. a first fixed bracket; 3. a second fixed bracket; 4. a first hand rocker; 5. a second hand rocker; 6. a large screw rod; 7. a lead screw nut; 8. a small screw rod; 9. a first helical gear; 10. a second helical gear; 11. a transmission screw rod; 12. a first air pipe; 13. a second air pipe; 14. a fixed mount; 15. a support bar; 16. a crimping roller; 17. a film; 18. the liquid level of the extraction; 19. and a limiting stopper.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1, the edge-clamping roller device of the wet-process membrane extraction system of the embodiment includes an edge-clamping roller 16 and an edge-clamping roller lifting adjusting mechanism installed in the extraction tank 1, and the height of the edge-clamping roller 16 in the extraction tank 1 can be adjusted by the lifting adjusting mechanism, so that frosting caused by the fact that the edge-clamping roller 16 is immersed in the extraction liquid for a long time can be effectively prevented, and further improvement of the membrane surface state and the membrane performance of the membrane is facilitated. The lifting adjusting mechanism comprises a large screw rod 6 and a screw nut 7, the large screw rod 6 is arranged on the inner wall of the extraction tank 1, the screw nut 7 is sleeved on the large screw rod 6, and the edge clamping roller 16 is fixedly connected with the screw nut. The large screw rod 6 is driven to rotate, the screw nut 7 moves up and down along the large screw rod 6, so that the edge clamping roller 16 can be driven to move up and down, the lifting adjustment of the edge clamping roller is realized, and the lifting adjustment mechanism is simple in structure and convenient to operate.

Example 2

The edge-clamping roller device of the wet-process membrane extraction system of the embodiment has a structure basically the same as that of embodiment 1, and mainly differs from that of embodiment 1 in that: the upper end and the lower end of the large screw rod 6 are arranged on the first fixing support 2 and the second fixing support 3 on the inner wall of the extraction tank 1 through rotating bearings, and when the edge clamping roller is adjusted up and down, the large screw rod 6 can rotate in the rotating bearings, so that the screw nut 7 can move up and down along the large screw rod 6. Be equipped with first rocker 4 on the big lead screw, can drive big lead screw 6 and rotate convenient operation through rotating first rocker 4.

Example 3

The edge-clamping roller device of the wet-process membrane extraction system of this embodiment has a structure substantially the same as that of embodiment 2, and the difference is mainly that: the upper end and the lower end of the screw nut 7 are respectively fixedly connected with the first air pipe 12 and the second air pipe 13, and the edge clamping roller 16 is fixedly connected with a fixing frame 14 arranged on the first air pipe 12 and the second air pipe 13, so that the first air pipe 12 and the second air pipe 13 can be driven through the screw nut, and the edge clamping roller 16 is driven to move up and down along with the fixing frame 14. Specifically, the upper row of rollers of the edge-clamping roller 16 is fixedly connected with the fixed frame 14, and the lower row of rollers is fixedly connected with the fixed frame 14 through the supporting rod 15. Simultaneously, first trachea 12 and second trachea 13 are located the top and the below of extraction liquid level respectively, and consequently first trachea 12 adopts the PU material to make, and second trachea 13 is stainless steel to can prevent that second trachea 13 from receiving the extraction liquid to corrode, effectively prolonged the life of double-layered limit roller device.

Example 4

The edge-clamping roller device of the wet-process membrane extraction system of this embodiment has a structure substantially the same as that of embodiment 3, and mainly differs therefrom in that: the horizontal adjusting mechanism comprises a small screw rod 8 and a transmission screw rod 11, wherein the small screw rod 8 is vertically arranged inside the extraction tank 1, the transmission screw rod 11 is in transmission connection with the small screw rod 8 through a bevel gear, and the fixing frame 14 is in threaded connection with the transmission screw rod 11. The small screw rod 8 is rotated to drive the bevel gear to rotate, so that the transmission screw rod 11 is driven to rotate, the fixing frame 14 is horizontally moved along the transmission screw rod 11, and the left and right adjustment of the edge clamping roller is realized. Specifically, the upper part of the small screw 8 is connected with the first fixing support 2 in a hollow manner, that is, a smooth hole for the small screw 8 to pass through is processed on the first fixing support 2, a first helical gear 9 is sleeved on the lower part of the small screw 8, and a second helical gear 10 meshed with the first helical gear 9 is arranged at the end part of the transmission screw 11. Meanwhile, a stopper 19 is fixedly installed between the first air pipe 12 and the second air pipe 13, and the driving screw 11 is restricted by the stopper 19 to rotate only but not to move left and right and up and down. The small screw rod 8 is also provided with a second hand rocker 5, and the small screw rod 8 can be directly driven to rotate by manually rotating the second hand rocker 5.

Example 5

The edge-clamping roller device of the wet-process membrane extraction system of this embodiment has a structure substantially the same as that of embodiment 4, and the difference is mainly that: the fixing frame 14 is provided with unthreaded holes matched with the first air pipe 12 and the second air pipe 13, so that when the height of the edge clamping roller 16 is adjusted by adopting a lifting adjusting mechanism, the transmission screw rod 11 can move up and down along with the screw nut 7, and meanwhile, the left and right shaking of the fixing frame 14 during up and down adjustment can be effectively prevented due to the threaded action between the transmission screw rod 11 and the fixing frame 14; when the horizontal adjusting mechanism is used for adjusting the edge clamping roller 16 left and right, the lifting adjusting mechanism stops working, the first air pipe and the second air pipe can be used as guide rails for left and right movement of the fixing frame, and the fixing frame 14 is prevented from rotating along with the transmission screw rod.

Example 6

The wet-process diaphragm extraction system of the embodiment comprises an extraction tank 1, wherein the edge clamping roller device in embodiment 5 is arranged in the extraction tank 1. In the specific implementation process, the upper and lower rows of rollers of the edge clamping roller 16 clamp the film 17 to stabilize the tension of the film 17, when wrinkles are generated on the surface of the film 17, the large screw rod 6 is controlled to be fixed, and the edge clamping roller 16 is controlled to move left and right by adjusting the small screw rod 8, so that the tension stability of the film 17 is realized, and the wrinkles are eliminated; when the edge clamping roller 16 is below the liquid level of the extraction tank for a certain time, the small screw rod is controlled to be fixed, the edge clamping roller 16 is controlled to move up and down by adjusting the large screw rod 6, and the phenomenon that the edge clamping roller 16 frosts is avoided under the condition that the film surface is stable. In the actual production process, the position of the edge clamping roller 16 is often controlled by adjusting the screw rod at the same time, the small screw rod 8 is adjusted to adjust the left and right transverse positions to keep the film surface tension stable, and then the large screw rod 6 is adjusted to adjust the position of the edge clamping roller 16 vertically.

Example 7

The wet process diaphragm extraction system of this embodiment, further, two-phase inside wall of extraction tank 1 is equipped with two double-layered limit roller devices of symmetric distribution to on the one hand can carry out upper and lower or level control respectively to the different double-layered limit rollers in the extraction tank, on the other hand still is favorable to improving the structural stability of device, and does not influence each other between the lift and the level control of double-layered limit roller.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a double-layered limit roller device of wet process diaphragm extraction system, is including installing double-layered limit roller (16) in extraction tank (1), its characterized in that: the device is characterized by further comprising a clamping roller lifting adjusting mechanism, wherein the lifting adjusting mechanism comprises a large lead screw (6) and a lead screw nut (7), the large lead screw (6) is installed on the inner wall of the extraction tank (1), the lead screw nut (7) is sleeved on the large lead screw (6), and the clamping roller (16) is fixedly connected with the lead screw nut (7).

2. The edge-clamping roller device of the wet-process membrane extraction system as claimed in claim 1, wherein: the upper end and the lower end of the big screw rod (6) are arranged on the first fixed support (2) and the second fixed support (3) on the inner wall of the extraction tank (1) through rotating bearings.

3. The edge-clamping roller device of the wet-process membrane extraction system as claimed in claim 1, wherein: the lead screw nut (7) is fixedly connected with the first air pipe (12) and the second air pipe (13), and the edge clamping roller (16) is fixedly connected with a fixing frame (14) arranged on the first air pipe (12) and the second air pipe (13).

4. The edge-clamping roller device of the wet-process membrane extraction system as claimed in claim 3, wherein: the upper row of rollers of the edge clamping roller (16) is fixedly connected with the fixed frame (14), and the lower row of rollers is fixedly connected with the fixed frame (14) through the supporting rod (15).

5. The edge-clamping roller device of the wet-process membrane extraction system as claimed in claim 3, wherein: the first air pipe (12) is made of PU materials, and the second air pipe (13) is made of stainless steel materials.

6. Edge nip roll arrangement for a wet membrane extraction system according to any one of claims 3-5, characterized in that: the horizontal adjusting mechanism comprises a small screw rod (8) and a transmission screw rod (11), wherein the small screw rod (8) is vertically arranged inside the extraction tank (1), the transmission screw rod (11) is in transmission connection with the small screw rod (8) through a bevel gear, and the fixing frame (14) is in threaded connection with the transmission screw rod (11).

7. The edge-clamping roller device of the wet-process membrane extraction system as claimed in claim 6, wherein: the fixing frame (14) is provided with unthreaded holes matched with the first air pipe (12) and the second air pipe (13), and the large screw rod (6) and the small screw rod (8) are respectively provided with a first hand rocker (4) and a second hand rocker (5).

8. The edge-clamping roller device of the wet-process membrane extraction system as claimed in claim 6, wherein: the upper part of the small screw rod (8) is arranged on the first fixing support (2), the lower part of the small screw rod is sleeved with a first helical gear (9), and the end part of the transmission screw rod (11) is provided with a second helical gear (10) meshed with the first helical gear (9).

9. A wet process membrane extraction system comprising an extraction tank (1), characterized in that: the extraction tank (1) is internally provided with an edge clamping roller device as defined in any one of claims 1-8.

10. A wet membrane extraction system according to claim 9, wherein: two inner walls of the extraction tank (1) are provided with two edge clamping roller devices which are symmetrically distributed.